CROWN CASTLE INTERNATIONAL CORP
S-1/A, 1999-04-14
COMMUNICATIONS SERVICES, NEC
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<PAGE>
 
     
  As filed with the Securities and Exchange Commission on April 14, 1999     
                                                    
                                                 Registration No. 333-74553     
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                ---------------
                                 
                              AMENDMENT NO. 1     
                                       
                                    TO     
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     Under
                           THE SECURITIES ACT OF 1933
 
                                ---------------
                        CROWN CASTLE INTERNATIONAL CORP.
             (Exact name of Registrant as specified in its charter)
 
        Delaware                      4899                     76-0470458
    (State or other            (Primary Standard            (I.R.S. Employer
    jurisdiction of                Industrial                Identification
    incorporation or         Classification Number)             Number)
     organization)
 
                                510 Bering Drive
                                   Suite 500
                              Houston, Texas 77057
                                 (713) 570-3000
  (Address, including zip code, and telephone number, including area code, of
                   Registrant's principal executive offices)
 
                                ---------------
                           Mr. Charles C. Green, III
              Executive Vice President and Chief Financial Officer
                        Crown Castle International Corp.
                                510 Bering Drive
                                   Suite 500
                              Houston, Texas 77057
                                 (713) 570-3000
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)
 
                                ---------------
                                   Copies to:
         Stephen L. Burns, Esq.                 Kirk A. Davenport, Esq.
        Cravath, Swaine & Moore                     Latham & Watkins
           825 Eighth Avenue                        885 Third Avenue
        New York, New York 10019                New York, New York 10022
 
                                ---------------
 
   Approximate date of commencement of proposed sale to the public: As soon as
practicable after the effective date of this Registration Statement.
   If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box. [_]
   If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [_]
   If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]
   If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]
   If the delivery of the prospectus is expected to be made pursuant to Rule
434, please check the following box. [_]
 
                                ---------------
 
  The Registrant hereby amends this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrant
shall file a further amendment which specifically states that this Registration
Statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933, or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
 
                                EXPLANATORY NOTE
 
    This Registration Statement contains alternate sections, paragraphs,
sentences or phrases which will be contained in two forms of prospectus covered
by this Registration Statement, one to be used in connection with an offering
of shares of our common stock and the other to be used in connection with a
concurrent offering of our senior discount notes. Those sections, paragraphs,
sentences or phrases that will appear only in the equity prospectus are marked
at the beginning of such section, paragraph, sentence or phrase by the symbol
[E] and those appearing only in the debt prospectus are designated by the
symbol [D]. Unless so indicated with a [D] or [E], the language therein will
appear in both forms of prospectus.
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+The information in this preliminary prospectus is not complete and may be     +
+changed. These securities may not be sold until the registration statement    +
+filed with the Securities and Exchange Commission is effective. This          +
+preliminary prospectus is not an offer to sell nor does it seek an offer to   +
+buy these securities in any jurisdiction where the offer or sale is not       +
+permitted.                                                                    +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[D]               
               Subject to Completion. Dated April 14, 1999.     
 
                         $300,000,000 (Gross Proceeds)
 
[CROWN CASTLE INTERNATIONAL CORP. LOGO APPEARS HERE]
 
                        Crown Castle International Corp.
 
                         % Senior Discount Notes due 2011
 
                                  -----------
       
  Concurrently with this offering, we are offering    shares of our common
stock pursuant to an underwritten public offering. The closing of this offering
is conditioned upon the closing of the equity offering.
   
  See "Risk Factors" beginning on page 19 to read about certain factors you
should consider before buying the notes.     
 
                                  -----------
 
  Neither the Securities and Exchange Commission nor any other regulatory body
has approved or disapproved of these securities or passed upon the accuracy or
adequacy of this prospectus. Any representation to the contrary is a criminal
offense.
 
                                  -----------
 
<TABLE>
<CAPTION>
                         Per Note Total
                         -------- -----
<S>                      <C>      <C>
Initial public offering
 price..................  $       $
Underwriting discount...  $       $
Proceeds, before
 expenses, to Crown
 Castle International
 Corp...................  $       $
</TABLE>
 
  The offering price set forth above does not include accreted value, if any.
The notes will accrete in principal amount from     , 1999 and must be paid by
the purchaser if the notes are delivered after     , 1999.
 
                                  -----------
 
  The underwriters expect to deliver the notes in book-entry form only through
the facilities of The Depository Trust Company against payment in New York, New
York on     , 1999.
 
Goldman, Sachs & Co.                                        Salomon Smith Barney
 Joint Book-Running               Joint Book-Running
      Manager                          Manager
 
                                Lehman Brothers
 
                           Credit Suisse First Boston
 
                                  -----------
 
                         Prospectus dated       , 1999.
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+The information in this prospectus is not complete and may be changed. These  +
+securities may not be sold until the registration statement filed with the    +
+Securities and Exchange Commission is effective. This preliminary prospectus  +
+is not an offer to sell nor does it seek an offer to buy these securities in  +
+any jurisdiction where the offer or sale is not permitted.                    +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[E]               
               Subject to Completion. Dated April 14, 1999.     
 
                                       Shares
 
[CROWN CASTLE INTERNATIONAL CORP. LOGO APPEARS HERE]
 
                        Crown Castle International Corp.
 
                                  Common Stock
 
                                  -----------
   
  This is an offering of shares of common stock of Crown Castle International
Corp. This prospectus relates to an offering of      shares in the United
States. In addition,      shares are being offered outside the United States in
an international offering. We are offering      of the shares to be sold in the
offering and selling stockholders are offering an additional      shares.     
 
  The common stock is listed on the Nasdaq National Market under the symbol
"TWRS". The last reported sale price of the common stock on March 15, 1999 was
$19 15/16 per share.
 
  Concurrently with this offering, we are offering $300,000,000 in initial
accreted value of   % senior discount notes due 2011 in an underwritten public
offering. The closing of this offering is conditioned upon the closing of the
debt offering.
   
  See "Risk Factors" beginning on page 19 to read about certain factors you
should consider before buying the shares.     
 
                                  -----------
 
  Neither the Securities and Exchange Commission nor any other regulatory body
has approved or disapproved of these securities or passed upon the accuracy or
adequacy of this prospectus. Any representation to the contrary is a criminal
offense.
 
                                  -----------
 
<TABLE>   
<CAPTION>
                                                               Per Share Total
                                                               --------- -----
<S>                                                            <C>       <C>
Initial price to public.......................................   $       $
Underwriting discount.........................................   $       $
Proceeds, before expenses, to Crown Castle International
 Corp.........................................................   $       $
Proceeds, before expenses, to the selling stockholders........   $       $
</TABLE>    
   
  The U.S. underwriters may, under certain circumstances, purchase up to an
additional      shares from the selling stockholders at the initial price to
public less the underwriting discount. The international underwriters may
similarly purchase up to an aggregate of an additional      shares.     
 
                                  -----------
 
  The underwriters expect to deliver the shares against payment in New York,
New York on      , 1999.
 
Goldman, Sachs & Co.                                        Salomon Smith Barney
 Joint Book-Running               Joint Book-Running
      Manager                           Manager
 
                                Lehman Brothers
 
                           Credit Suisse First Boston
 
                                  -----------
 
                         Prospectus dated       , 1999.
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>   
<CAPTION>
                                      Page
                                      ----
<S>                                   <C>
Prospectus Summary..................    1
Risk Factors........................   19
Use of Proceeds.....................   31
[E] Price Range of Common Stock.....   31
[E] Dividend Policy.................   32
[E] Dilution........................   32
Capitalization......................   34
Unaudited Pro Forma Condensed
 Consolidated Financial Statements..   35
Selected Financial and Other Data of
 CCIC...............................   42
Selected Financial and Other Data of
 CTI................................   44
Management's Discussion and Analysis
 of Financial Condition and Results
 of Operations......................   46
Industry Background.................   60
Business............................   68
The 1999 Transactions...............   93
Management..........................  104
</TABLE>    
<TABLE>   
<CAPTION>
                                                                          Page
                                                                          ----
<S>                                                                       <C>
Certain Relationships and Related Transactions..........................  116
Principal and Selling Stockholders......................................  125
Description of Capital Stock............................................  128
Description of Certain Indebtedness.....................................  135
[D] Description of the Notes............................................  141
[E] Shares Eligible for Future Sale.....................................  175
[D] Certain U.S. Federal Income Tax Considerations......................  177
[E] Certain U.S. Federal Income Tax Considerations to Non-U.S. Holders..  182
[D] Legal Matters.......................................................  184
[E] Legal Matters.......................................................  184
Independent Auditors....................................................  184
Certain Currency Translations...........................................  185
Available Information...................................................  185
Index to Financial Statements...........................................  F-1
[D] Underwriting........................................................  U-1
[E] Underwriting........................................................  U-1
</TABLE>    
 
                               ----------------
       
                                       i
<PAGE>
 
                               PROSPECTUS SUMMARY
 
    This summary highlights information contained elsewhere in this prospectus.
It may not contain all the information that is important to you. We encourage
you to read this entire prospectus carefully.
 
                                  The Company
   
    We are a leading owner and operator of wireless communications and
broadcast transmission infrastructure. After giving effect to the completion of
the recent and proposed transactions we describe in this prospectus, as of
December 31, 1998, we owned or managed 6,137 towers, including 4,451 towers in
the United States and Puerto Rico and 1,686 towers in the United Kingdom. Our
customers currently include many of the world's major wireless communications
and broadcast companies, including Bell Atlantic Mobile, BellSouth Mobility,
AT&T Wireless, Nextel and the British Broadcasting Corporation.     
 
    Our strategy is to use our leading domestic and international position to
capture the growing consolidation and build-out opportunities created by:
     
  .   the outsourcing of tower ownership and management by major wireless
      carriers;     
 
  .   the need for existing wireless carriers to expand coverage and improve
      capacity;
 
  .   the additional demand for towers created by new entrants into the
      wireless communications industry;
 
  .   the privatization of state-run broadcast transmission networks; and
 
  .   the introduction of new digital broadcast transmission technology and
      wireless technologies.
   
    Our two main businesses are leasing antenna space on wireless and broadcast
multi-tenant towers and operating broadcast transmission networks. We also
provide complementary services to our customers, including network design,
radio frequency engineering, site acquisition, site development and
construction, antenna installation and network management and maintenance. We
believe that our full service capabilities are a key competitive advantage in
forming strategic partnerships to acquire large wireless and broadcast tower
portfolios and in winning contracts for new tower construction.     
   
    Our primary business in the United States is the leasing of antenna space
to wireless carriers. After completion of the recent and proposed transactions
we describe in this prospectus, we will have concentrations of towers, or tower
clusters, in 26 of the 50 largest U.S. metropolitan areas, 23 of which are east
of the Mississippi river. We believe that by owning and managing large tower
clusters we are able to offer our customers the ability to expand their
networks rapidly and efficiently across particular markets or regions.
Accordingly, we have entered into agreements with both Bell Atlantic Mobile and
BellSouth Mobility that will allow us to control and operate substantially all
the towers in their 850 MHz networks.     
   
    Our primary business in the United Kingdom is the operation of television
and radio broadcast transmission networks. Following the 1997 acquisition of
the BBC's broadcast and tower infrastructure, we were awarded long-term
contracts to provide the BBC and other broadcasters analog and digital
transmission services. We also lease antenna space to wireless operators in the
United Kingdom on the towers we acquired from the BBC and from various wireless
carriers. After completion of the One2One transaction described in this
prospectus, we will have nationwide broadcast and wireless coverage in the
United Kingdom.     
 
                                       1
<PAGE>
 
 
                                Growth Strategy
   
    Our objective is to become the premier global provider of wireless
communications and broadcast transmission infrastructure and related services.
Our experience in expanding tower portfolios and operating analog and digital
transmission networks, our significant relationships with wireless carriers and
broadcasters and our ability to offer customers our in-house technical and
operational expertise positions us to accomplish this objective. The key
elements of our growth strategy are to:     
 
    Maximize Utilization of Tower Capacity.  We seek to increase the number of
antenna leases on the towers and rooftops that we own or manage. Many of our
towers have significant capacity for additional antennas. We can increase the
number of tenants on these towers at a low incremental cost.
   
    Leverage Expertise of U.S. and U.K. Personnel to Capture Global Growth
Opportunities.  Our ability to design, develop and operate wireless
communications and broadcast transmission networks, including the transmission
of signals, is an important competitive advantage in our pursuit of growth
opportunities, as evidenced by our BBC, One2One, Bell Atlantic, BellSouth and
Powertel transactions.     
   
    Partner with Wireless Carriers to Assume Ownership of their Existing
Towers.  We will continue to seek to partner with major wireless carriers in
order to assume ownership of their towers directly or through joint ventures or
control their towers through contractual arrangements. We believe that we will
be able to capitalize on our relationships with our strategic partners and
customers with international operations to expand our global coverage, or
footprint.     
   
    Provide Build-to-Suit Towers for Wireless Carriers and Broadcasters.  We
are aggressively pursuing opportunities to build new towers for wireless
carriers. As wireless carriers continue to expand and fill-in their service
areas, they will require additional communications sites and will have to build
new towers where multi-tenant towers are not available. Similarly, the
introduction of digital television broadcasting in the United States and
elsewhere in the world will require the construction of new broadcast towers to
accommodate new digital transmission equipment and analog transmission
equipment displaced from existing towers.     
 
    Acquire Existing Broadcast Transmission Networks.  We intend to pursue
selective acquisitions of broadcast transmission networks and related
infrastructure around the world. We believe we can capitalize on the experience
we have gained through the acquisition of the BBC's broadcast transmission
network and our roll-out of digital television transmission services throughout
the United Kingdom.
   
    Continue to Decentralize Management Functions. In order to better manage
our efforts to add tenants to our towers and our new tower build programs, and
in anticipation of the continued growth of our tower footprint throughout the
United States, we have begun and plan to continue decentralizing some
management and operational functions. To that end, in addition to our
Pittsburgh operating headquarters and regional office, we have opened five
regional offices and plan to add 10 additional regional offices in connection
with the recent and proposed transactions described below.     
 
                                       2
<PAGE>
 
                                
                             1999 Transactions     
   
Bell Atlantic Joint Venture     
   
    On March 31, 1999, we formed a joint venture with Bell Atlantic Mobile to
own and operate approximately 1,459 towers. These towers represent
substantially all the towers in Bell Atlantic's 850 MHz wireless network in the
eastern and southwestern United States, including markets such as New York,
Philadelphia, Boston, Washington, D.C. and Phoenix.     
   
    We manage the day-to-day operations of the joint venture. There is a master
build-to-suit agreement pursuant to which the joint venture will build and own
the next 500 towers to be built for Bell Atlantic's wireless communications
business. Bell Atlantic leases antenna space on the towers transferred to the
joint venture and will lease antenna space on all towers built pursuant to the
build-to-suit agreement. We own approximately 61.5% of the joint venture and
Bell Atlantic and certain of its affiliates own the other 38.5% along with a
0.001% interest in the joint venture's operating subsidiary.     
 
Proposed BellSouth Transaction
   
    On March 8, 1999, we entered into a preliminary agreement with BellSouth
and certain of its affiliates to control and operate approximately 1,850
towers. These towers represent substantially all the towers in BellSouth's 850
MHz wireless network in the southeastern and midwestern United States,
including such markets as Miami, Atlanta, Tampa, Nashville and Indianapolis.
       
    We will be responsible for managing, maintaining, marketing and leasing the
available space on BellSouth's towers. There will be a master build-to-suit
agreement pursuant to which we will have the right to build, control and
operate the next 500 towers to be built for BellSouth's wireless communications
business. BellSouth will lease antenna space on the 1,850 towers, as well as
the towers built pursuant to the build-to-suit agreement. While we will have
complete responsibility for the towers and will receive all the economic
benefits of leasing available space on the towers, BellSouth will continue to
own the tower infrastructure. In connection with our entering into the
preliminary agreement, we placed $50.0 million in an escrow account which will
be returned to us at the first closing date. See "Risk Factors--We May Not
Consummate the 1999 Transactions".     
 
Proposed Powertel Acquisition
   
    On March 15, 1999, we entered into an agreement with Powertel Inc. to
purchase approximately 650 towers. These towers represent substantially all of
Powertel's owned towers in its 1.9 GHz wireless network in the southeastern and
midwestern United States, including such markets as Atlanta, Birmingham,
Jacksonville, Memphis and Louisville, and a number of major connecting highway
corridors in the southeast. These towers are complementary to BellSouth's 850
MHz footprint in the southeast and have minimal coverage overlap. Powertel will
lease antenna space on the towers we acquire in the acquisition. Pursuant to
the acquisition agreement, we placed $50.0 million in escrow to be applied to
the purchase price at closing. See "Risk Factors--We May Not Consummate the
1999 Transactions".     
 
Proposed One2One Transaction
   
    On March 5, 1999, we entered into an agreement with One2One, pursuant to
which CTI, our U.K. operating subsidiary, has agreed to manage, develop and, at
its option, acquire up to 821 towers. These towers represent substantially all
the towers in One2One's 1,800 MHz nationwide wireless network in the United
Kingdom. We believe this transaction will position us to capitalize on     
 
                                       3
<PAGE>
 
   
lease-up and build-out opportunities provided by the introduction of new
wireless technologies. CTI will be responsible for managing and leasing
available space on the towers and will receive all the income from any such
third party leases.     
       
                                ----------------
   
    Although we expect the Powertel acquisition and the One2One transaction to
be consummated during the first half of 1999, and the first closing of the
BellSouth transaction to be consummated by May 31, 1999, the operative
agreements governing these transactions are subject to a number of significant
conditions. Therefore, we cannot guarantee that we will close any of these
proposed transactions on the terms described in this prospectus or at all. See
"Risk Factors--We May Not Consummate the 1999 Transactions". When we refer to
financial information in this prospectus as "after giving effect to" or "pro
forma for" the 1999 Transactions, we mean after giving effect to the
transactions described above, other than the One2One transaction, which does
not have a material impact on our pro forma financial results.     
       
                                ----------------
 
    Our principal executive offices are located at 510 Bering Drive, Suite 500,
Houston, Texas 77057, and our telephone number is (713) 570-3000.
 
                                       4
<PAGE>
 
                            [D] Corporate Structure
   
    The following chart illustrates as of December 31, 1998, assuming the
offerings and the recent and proposed transactions described in this prospectus
had been completed, (1) our organizational structure, including our principal
subsidiaries, and (2) our consolidated debt obligations. See "Capitalization"
and "The 1999 Transactions".     
 
                               Restricted Group
 
                -----------------------------------------------
                        Crown Castle International Corp.
                                   ("CCIC")                        ---------|
                .  $251.0 million (168.1 million accreted value)            |
                   10 5/8% Senior Discount Notes due 2007                   |
                .  $     million (300.0 million accreted value)             |
                   Senior Discount Notes due 2011                           |
                .  $200.0 million 12 3/4% Senior Exchangeable               |
                   Preferred Stock due 2010                                 |
                -----------------------------------------------             |
                    |                  |                   |                |
        100.0%      |           100.0% |            100.0% |                |
                                                                            |
   --------------------------  -----------------   ---------------------    |
   Crown Communication, Inc.   Proposed Powertel   Proposed BellSouth       |
     ("Crown Communication")      Subsidiary           Subsidiary           |
      . Senior Credit                                                       |
         Facility/(a)/                                                      |
   --------------------------  -----------------   ---------------------    |
                                                                            |
                                                                            |
                           Unrestricted Subsidiaries                        |
                                                                            |
                                        ------------------------------------|
                                        |
                                        |
                           -----------------------------
                    80.0%  |                     61.5% |
                           |                           |
                           |                           |
            -------------------------------     -------------------------
                  CTI Group                     Bell Atlantic
                   ("CTI")                      Joint Venture
            .  Revolving Credit                 .  Revolving Credit
               Facility/(b)/                       Facility/(c)/
            .  (pound) 125.0 million 9.0%
               Guaranteed Bonds
            -------------------------------     -------------------------
 
- -----------------------
(a)  As of December 31, 1998, $5.5 million was drawn of the $100.0 million
     revolving credit facility.
(b)  As of December 31, 1998, (pound) 33.2 million was drawn of the (pound)
     64.0 million revolving credit facility.
(c)  The joint venture obtained a new credit facility of up to $250.0 million
     of revolving credit loans with availability subject to a borrowing base.
     Approximately $180.0 was drawn upon the formation of the joint venture.
 
                                       5
<PAGE>
 
                            [E] Corporate Structure
   
    The following chart illustrates as of December 31, 1998 our organizational
structure, including our principal subsidiaries assuming the offerings and the
recent and proposed transactions described in this prospectus had been
completed. See "Capitalization" and "The 1999 Transactions".     
 
- -------------------------------------------------------------------------------
                       Crown Castle International Corp.
                                   ("CCIC")
 
- -------------------------------------------------------------------------------
         |                 |           |             |               |
         |100%             |100%       |100%         |100%           |80%(a)
         |                 |           |             |               |
- ------------------    ----------   ----------    ----------  ------------------
      Crown            Proposed     Proposed         CCA           Castle
Communication Inc.     Powertel     BellSouth    Investment     Transmission
   ("Crown            Subsidiary   Subsidiary       Corp.         Services
 Communication")                                                (Holdings) Ltd
 
- ------------------    ----------   ----------    ----------  ------------------
         |                                           |               |
         |100%                                       |61.5%(b)       |100%
         |                                           |               |
- ------------------                               ----------  ------------------
       Other                                                       Castle
     Domestic                                  Bell Atlantic     Transmission
   Subsidiaries                                Joint Venture   International Ltd
                                                                   ("CTI")
- ------------------                               ----------  ------------------
 
 
________________________________________
(a) The remaining 20% equity interest in CTSH is held by TdF. Pursuant to the
    TdF put right and our call right, in certain instances TdF's shares
    in CTSH may be exchanged for shares of our Class A common stock at
    a certain specified exchange ratio.
(b) Bell Atlantic Mobile will hold the remaining 38.5% interest in the
    joint venture along with a 0.001% interest in the joint venture's
    operating subsidiary.
 
 
                                       6
<PAGE>
 
                                [D] The Offering
 
Issuer......................  Crown Castle International Corp.
                              510 Bering Drive
                              Suite 500
                              Houston, Texas 77057
 
                              $300.0 million in initial accreted value of   %
Total amount of notes         Senior Discount Notes due 2011.
 offered...............     
 
Maturity....................        , 2011.
 
                                 , plus accreted value, if any, from       ,
Issue price............       1999.
 
Interest....................  Annual rate--  %. Payment frequency--every six
                              months on        and       . First payment--  ,
                              2004. Cash interest will not accrue prior to
                                    , 2004.
 
                              We will sell the notes at a substantial discount
Original issue discount.....  to their principal amount at maturity. The notes
                              will accrete in value through      , 2004 at an
                              annual rate of   %, compounding every six months.
                              Cash interest will not be payable on the notes
                              until    , 2004.
 
Ranking.....................  These notes are senior debts. They rank pari
                              passu in right of payment with all of our
                              existing and future senior debt, but will be
                              effectively junior to the extent of the assets
                              securing our other senior debt. Our only
                              significant assets are the capital stock of our
                              subsidiaries, and the notes will not be
                              guaranteed by our subsidiaries. As a result, the
                              notes will be structurally subordinated to all
                              debt and other liabilities of our subsidiaries,
                              including borrowings under their credit
                              facilities.
 
                              On or after    , 2004, we may redeem some or all
Optional redemption....       of the notes at any time at the redemption prices
                              listed in the "Description of Notes" section
                              under the heading "Optional Redemption".
 
                              Before    , 2002, we may redeem up to $
                              million of the notes with the proceeds of public
                              offerings of equity or strategic investments in
                              our company at the price listed in the
                              "Description of Notes" section under the heading
                              "Optional Redemption".
 
                              If we sell certain assets under certain
Mandatory offer to            circumstances, or experience specific kinds of
 repurchase............       changes of control, we must offer to repurchase
                              the notes at the prices listed in the
                              "Description of Notes" section under the heading
                              "Repurchase at the Option of Holders".
 
                              We will issue the notes under an indenture with
Basic covenants of            the United States Trust Company of New York. The
 indenture.............       indenture will,
 
                                       7
<PAGE>
 
                              among other things, restrict our ability and the
                              ability of our subsidiaries to:
 
                              . borrow money;
 
                              . pay dividends on stock or repurchase stock;
 
                              . make investments;
 
                              . use assets as security in other transactions;
                              and
 
                              . sell certain assets or merge with or into other
                              companies.
 
                              For more details, see the "Description of the
                              Notes" section under the heading "Certain
                              Covenants".
 
                              Concurrently with this offering, we are offering
Concurrent equity                 shares of our common stock in an underwritten
 offering..............       public offering. The closing of this offering is
                              conditioned on the closing of the equity
                              offering.
 
                              We expect to use the proceeds of the equity and
Use of proceeds........       debt offerings to repay indebtedness incurred to
                              finance a portion of the Proposed BellSouth
                              Transaction and the Proposed Powertel
                              Acquisition, to finance the balance of the
                              Proposed BellSouth Transaction and the Proposed
                              Powertel Acquisition and for general corporate
                              purposes.
 
                              For more details, see "Use of Proceeds".
 
                                  Risk Factors
 
    You should carefully consider all of the information in this prospectus. In
particular, you should evaluate the specific risk factors under "Risk Factors"
for a discussion of certain risks involved with an investment in the notes.
 
                                       8
<PAGE>
 
                            [E] The Equity Offering
   
Common stock offered by the
 company:     
       
    U.S. offering...             shares
       
    International
     offering.......             shares
      Total.............         shares
   
Common stock offered by the
 selling stockholders(a):
        
    U.S. offering...             shares
   
Common stock to be
 outstanding after the
 offering(b):     
    Common stock(c)......
                                 shares
    Class A common
     stock...............
                                 shares
 
                              Under our Certificate of Incorporation,
Voting rights..........       stockholder approval generally will require the
                              affirmative vote of the holders of a majority of
                              the voting power, with the holders of both
                              classes of our common stock voting together as a
                              single class. However, some actions will require
                              the separate approval of the holders of a
                              majority of our Class A common stock. In
                              addition, the holders of our Class A common
                              stock, voting as a separate class, have the right
                              to elect up to two members of our Board of
                              Directors and will not vote in the election of
                              directors by the holders of our other voting
                              stock entitled to vote in the election of
                              directors. See "Description of Capital Stock".
 
                              Concurrently with this offering, we are offering
Concurrent debt offering....  $    million aggregate principal amount at
                              maturity of our   % Senior Discount Notes due
                              2011 ($300.0 million initial accreted value) by a
                              separate prospectus. The closing of this offering
                              is conditioned on the closing of the debt
                              offering.
 
                              We expect to use the proceeds of the equity and
Use of proceeds........       debt offerings to repay indebtedness incurred to
                              finance a portion of the Proposed BellSouth
                              Transaction and the Proposed Powertel
                              Acquisition, to finance the balance of the
                              Proposed BellSouth Transaction and the Proposed
                              Powertel Acquisition and for general corporate
                              purposes.
 
                              For more details, see "Use of Proceeds".
 
                              "TWRS".
Nasdaq stock symbol....     
- --------
(a) Does not include        shares of common stock that will be offered if the
    underwriters' over-allotment option is exercised in full.
(b) Does not include        shares of common stock issuable upon the exercise
    of stock options held by certain of the selling stockholders that will be
    exercised if the underwriter's over-allotment option is exercised in full.
(c) Does not include (1)        shares of common stock reserved for issuance
    upon exercise of warrants outstanding prior to the offering, (2) shares of
    common stock reserved for issuance upon exercise of stock options
    previously granted pursuant to CTSH's stock option plans and agreements or
    (3)        shares of common stock reserved for issuance under our 1995
    Stock Option Plan (including shares issuable pursuant to stock options
    outstanding at the time of the offering). See "Management--Directors'
    Compensation and Arrangements", "Management--Stock Option Plans", "Certain
    Relationships and Related Transactions" and "Description of Capital Stock--
    Senior Preferred Warrants".
 
 
                                       9
<PAGE>
 
            [D] Summary Unaudited Pro Forma Financial and Other Data
   
    The unaudited pro forma financial and other data set forth below have been
derived from the pro forma financial statements included under "Unaudited Pro
Forma Condensed Consolidated Financial Statements". The pro forma statement of
operations data and other data for the year ended December 31, 1998, give
effect to the 1999 transactions detailed under "Unaudited Pro Forma Condensed
Consolidated Financial Statements" as if they had occurred on January 1, 1998.
The pro forma balance sheet data give effect to such transactions occurring in
1999 as if they had occurred on December 31, 1998. The unaudited pro forma
financial and other data for the Restricted Group (as defined) are not intended
as alternative measures of operating results, financial position or cash flow
from operations (as determined in accordance with generally accepted accounting
principles). The information set forth below should be read in conjunction with
"Unaudited Pro Forma Condensed Consolidated Financial Statements", "Selected
Financial and Other Data of CCIC", "Selected Financial and Other Data of CTI",
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and the consolidated financial statements and the notes thereto
included elsewhere in this prospectus.     
 
<TABLE>   
<CAPTION>
                                                   Company    Restricted Group
                                                  Pro Forma      Pro Forma
                                                 ------------ ----------------
                                                  Year Ended     Year Ended
                                                 December 31,   December 31,
                                                     1998           1998
                                                 ------------ ----------------
                                                    (Dollars in thousands)
<S>                                              <C>          <C>
Statement of Operations Data:
Net revenues:
  Site rental and broadcast transmission........  $ 251,679      $  72,286
  Network services and other....................     50,299         32,217
                                                  ---------      ---------
    Total net revenues..........................    301,978        104,503
                                                  ---------      ---------
Costs of operations:
  Site rental and broadcast transmission........     94,663         23,684
  Network services and other....................     29,480         17,329
                                                  ---------      ---------
    Total costs of operations...................    124,143         41,013
                                                  ---------      ---------
Expected incremental operating expenses for
 proposed transactions(a).......................     21,054         15,917
General and administrative......................     28,571         21,153
Corporate development(b)........................      4,633          4,625
Non-cash compensation charges(c)................     16,589          9,907
Depreciation and amortization...................    148,155         61,066
                                                  ---------      ---------
Operating income (loss).........................    (41,167)       (49,178)
Other income (expense):
  Interest and other income (expense)...........      4,945          1,101
  Interest expense and amortization of deferred
   financing costs..............................    (89,059)       (50,608)
                                                  ---------      ---------
Income (loss) before income taxes and minority
 interests......................................   (125,281)       (98,685)
Provision for income taxes......................       (374)          (374)
Minority interests..............................      1,307            --
                                                  ---------      ---------
Net income (loss)...............................   (124,348)       (99,059)
Dividends on preferred stock....................    (26,745)       (26,745)
                                                  ---------      ---------
Net income (loss) after deduction of dividends
 on preferred stock.............................  $(151,093)     $(125,804)
                                                  =========      =========
Other Data:
Site data(d):
  Towers and revenue producing rooftop sites at
   end of period................................
                                                  =========      =========
</TABLE>    
 
                                       10
<PAGE>
 
<TABLE>   
<CAPTION>
                                                    Company    Restricted Group
                                                   Pro Forma      Pro Forma
                                                  ------------ ----------------
                                                   Year Ended     Year Ended
                                                  December 31,   December 31,
                                                      1998           1998
                                                  ------------ ----------------
                                                     (Dollars in thousands)
<S>                                               <C>          <C>
EBITDA(e):
  Site rental and broadcast transmission.........  $  148,581     $   46,823
  Network services and other.....................         683         (4,486)
  Expected incremental operating expenses for
   proposed transactions (a).....................     (21,054)       (15,917)
  Corporate development expenses(b)..............      (4,633)        (4,625)
                                                   ----------     ----------
    Total EBITDA.................................  $  123,577     $   21,795
                                                   ==========     ==========
Adjusted EBITDA(e)...............................         --      $
Capital expenditures.............................  $  202,553         88,535
Summary cash flow information:
  Net cash provided by operating activities......     111,891         13,511
  Net cash used for investing activities.........    (212,763)       (88,535)
  Net cash provided by financing activities......   1,042,743      1,010,263
Ratio of earnings to fixed charges(f)............         --             --
Ratio of EBITDA to cash interest expense(g)......        3.06x          6.23x
</TABLE>    
 
<TABLE>   
<CAPTION>
                                  Company Pro Forma               Restricted Group Pro Forma
                               As of December 31, 1998              As of December 31, 1998
                         ------------------------------------ ---------------------------------------
                                                Pro Forma for                           Pro Forma for
                                    Pro Forma   Offerings and            Pro Forma      Offerings and
                         Historical    for          1999      Historical    for             1999
                            CCIC    Offerings   Transactions     CCIC    Offerings      Transactions
                         ---------- ----------  ------------- ---------- ----------     -------------
                                                 (Dollars in thousands)
<S>                      <C>        <C>         <C>           <C>        <C>            <C>
Balance Sheet Data:
Cash and cash
 equivalents............ $  296,450 $  962,575   $   49,583   $   41,785 $  707,910 (h)  $    3,293 (h)
Property and equipment,
 net....................    592,594    592,594    2,067,969      165,205    165,205       1,048,100
Total assets............  1,523,230  2,200,230    2,769,269    1,130,685  1,807,685       2,184,994
Total debt..............    429,710    729,710      909,710      173,599    473,599         473,599
Net debt(i).............    133,260   (232,865)     860,127      131,814   (234,311)        470,306
Redeemable preferred
 stock..................    201,063    201,063      201,063      201,063    201,063         201,063
Total stockholders'
 equity                     737,562  1,114,562    1,491,562      737,562  1,114,562       1,491,562
</TABLE>    
- --------
   
(a) We expect that we will incur incremental operating expenses as a result of
    the Bell Atlantic joint venture and the proposed transactions described in
    this prospectus. Such incremental expenses are currently estimated to
    amount to approximately $5.2 million per year for the joint venture and
    approximately $15.9 million per year for the proposed BellSouth transaction
    and the proposed Powertel acquisition. We have included the effect of these
    incremental expenses in the accompanying summary pro forma financial data
    in order to more accurately present the effect of these transactions on our
    consolidated results of operations. The effect of these incremental
    expenses has not been reflected in the Unaudited Pro Forma Condensed
    Consolidated Statement of Operations included elsewhere in this prospectus.
    See "Notes to Unaudited Pro Forma Condensed Consolidated Statement of
    Operations."     
(b) Corporate development expenses represent costs incurred in connection with
    acquisitions and development of new business initiatives. These expenses
    consist primarily of allocated compensation, benefits and overhead costs
    that are not directly related to the administration or management of
    existing towers.
   
(c) Represents charges related to the issuance of stock options to employees
    and executives.     
   
(d) Represents our aggregate number of sites at the end of the period, assuming
    we had consummated the joint venture, the BellSouth transaction and the
    Powertel acquisition. As of December 31, 1998, we had contracts with 1,365
    buildings in the United States to manage on behalf of such buildings the
    leasing of space for antennas on the rooftops of such buildings. A revenue
    producing rooftop represents a rooftop where we have arranged a lease of
    space on such rooftop and, as such, are receiving payments in respect of
    our management contract. We generally do not receive any payment for
    rooftops under management unless we actually lease space on such rooftops
    to third parties. As of December 31, 1998, we had 1,284 rooftop sites under
    management throughout the United States that were not revenue producing
    rooftops but were available for leasing to customers and, in the United
    Kingdom, we had 54 revenue producing rooftop sites that were occupied by
    our transmitters but were not available for leasing to customers.     
 
                                       11
<PAGE>
 
   
(e) EBITDA is defined as operating income (loss) plus depreciation and
    amortization and non-cash compensation charges. Adjusted EBITDA is defined
    as the sum of (1) annualized site rental and broadcast transmission EBITDA
    before corporate development for the most recent calendar quarter and (2)
    EBITDA, less site rental and broadcast transmission EBITDA before corporate
    development, for the most recent four calendar quarters. EBITDA and
    Adjusted EBITDA are presented as additional information because management
    believes them to be useful indicators of our ability to meet debt service
    and capital expenditure requirements. They are not, however, intended as
    alternative measures of operating results or cash flow from operations (as
    determined in accordance with generally accepted accounting principles).
    Furthermore, our measure of EBITDA may not be comparable to similarly
    titled measures of other companies.     
(f) For purposes of computing the ratio of earnings to fixed charges, earnings
    represent income (loss) before income taxes, minority interests and fixed
    charges. Fixed charges consist of interest expense, the interest component
    of operating leases and amortization of deferred financing costs. For the
    year ended December 31, 1998, our earnings were insufficient to cover our
    fixed charges by $125.3 million. For the year ended December 31, 1998,
    earnings were insufficient to cover fixed charges of the Restricted Group
    by $98.7 million.
   
(g) Total interest expense for the year ended December 31, 1998 includes
    amortization of deferred financing costs and discount of $47.2 million for
    CCIC, $0.9 million for CTI and $0.6 million for the Bell Atlantic joint
    venture.     
   
(h) Pro forma balances of cash and cash equivalents for the Restricted Group
    exclude $248.1 million of proceeds from our initial public offering and our
    offering of exchangeable preferred stock (along with interest earned on
    such amounts since the consummation of these transactions) that were
    contributed to the joint venture, of which approximately $45.9 million
    remained in the joint venture after its formation.     
(i) Net debt represents total debt less cash and cash equivalents.
 
                                       12
<PAGE>
 
            [E] Summary Unaudited Pro Forma Financial and Other Data
   
    The unaudited pro forma financial and other data set forth below have been
derived from the pro forma financial statements included under "Unaudited Pro
Forma Condensed Consolidated Financial Statements". The pro forma statement of
operations data and other data for the year ended December 31, 1998, give
effect to the 1999 transactions detailed under "Unaudited Pro Forma Condensed
Consolidated Financial Statements" as if they had occurred on January 1, 1998.
The pro forma balance sheet data give effect to such transactions occurring in
1999 as if they had occurred on December 31, 1998. The information set forth
below should be read in conjunction with "Unaudited Pro Forma Condensed
Consolidated Financial Statements", "Selected Financial and Other Data of
CCIC", "Selected Financial and Other Data of CTI", "Management's Discussion and
Analysis of Financial Condition and Results of Operations" and the consolidated
financial statements and the notes thereto included elsewhere in this
prospectus.     
<TABLE>   
<CAPTION>
                                                              Pro Forma
                                                      -------------------------
                                                             Year Ended
                                                            December 31,
                                                                1998
                                                      -------------------------
                                                       (Dollars in thousands,
                                                      except per share amounts)
<S>                                                   <C>
Statement of Operations Data:
Net revenues:
  Site rental and broadcast transmission............          $ 251,679
  Network services and other........................             50,299
                                                              ---------
    Total net revenues..............................            301,978
                                                              ---------
Costs of operations:
  Site rental and broadcast transmission............             94,663
  Network services and other........................             29,480
                                                              ---------
    Total costs of operations.......................            124,143
                                                              ---------
Expected incremental operating expenses for proposed
 transactions(a)....................................             21,054
General and administrative..........................             28,571
Corporate development(b)............................              4,633
Non-cash compensation charges(c)....................             16,589
Depreciation and amortization.......................            148,155
                                                              ---------
Operating income (loss).............................            (41,167)
Other income (expense):
  Interest and other income (expense)...............              4,945
  Interest expense and amortization of deferred
   financing costs..................................            (89,059)
                                                              ---------
Income (loss) before income taxes and minority
 interests..........................................           (125,281)
Provision for income taxes..........................               (374)
Minority interests..................................              1,307
                                                              ---------
Net income (loss)...................................           (124,348)
Dividends on preferred stock........................            (26,745)
                                                              ---------
Net income (loss) after deduction of dividends on
 preferred stock....................................          $(151,093)
                                                              =========
Loss per common share--basic and diluted............          $
                                                              =========
Common shares outstanding--basic and diluted (in
 thousands).........................................
                                                              =========
Other Data:
Site data (d):
  Towers and revenue producing rooftop sites at end
   of period........................................
                                                              =========
</TABLE>    
 
 
                                       13
<PAGE>
 
<TABLE>   
<CAPTION>
                                                               Pro Forma
                                                         ----------------------
                                                               Year Ended
                                                              December 31,
                                                                  1998
                                                         ----------------------
                                                         (Dollars in thousands)
<S>                                                      <C>
EBITDA(e):
  Site rental and broadcast transmission................       $ 148,581
  Network services and other............................             683
  Expected incremental operating expenses for proposed
   transactions(a)......................................         (21,054)
  Corporate development expenses(b).....................          (4,633)
                                                               ---------
    Total EBITDA........................................        $123,577
                                                               =========
Capital expenditures....................................       $ 202,553
Summary cash flow information:
  Net cash provided by operating activities.............         111,891
  Net cash used for investing activities................        (212,763)
  Net cash provided by financing activities.............       1,042,743
Ratio of earnings to fixed charges(f)...................             --
Ratio of EBITDA to total interest expense(g)............            1.39x
</TABLE>    
 
<TABLE>   
<CAPTION>
                                                         Pro Forma
                                                  As of December 31, 1998
                                            ------------------------------------
                                                                   Pro Forma for
                                                       Pro Forma   Offerings and
                                            Historical    for          1999
                                               CCIC    Offerings   Transactions
                                            ---------- ----------  -------------
                                                  (Dollars in thousands)
<S>                                         <C>        <C>         <C>
Balance Sheet Data:
Cash and cash equivalents.................. $  296,450 $  962,575   $   49,583
Property and equipment, net................    592,594    592,594    2,067,969
Total assets...............................  1,523,230  2,200,230    2,769,269
Total debt.................................    429,710    729,710      909,710
Net debt(h)................................    133,260   (232,865)     860,127
Redeemable preferred stock.................    201,063    201,063      201,063
Total stockholders' equity.................    737,562  1,114,562    1,491,562
</TABLE>    
- --------
   
(a) We expect that we will incur incremental operating expenses as a result of
    the Bell Atlantic joint venture and the proposed transactions described in
    this prospectus. Such incremental expenses are currently estimated to
    amount to approximately $5.2 million per year for the joint venture and
    approximately $15.9 million per year for the proposed BellSouth transaction
    and the proposed Powertel acquisition. We have included the effect of these
    incremental expenses in the accompanying summary pro forma financial data
    in order to more accurately present the effect of these transactions on our
    consolidated results of operations. The effect of these incremental
    expenses has not been reflected in the Unaudited Pro Forma Condensed
    Consolidated Statement of Operations included elsewhere in this prospectus.
    See "Notes to Unaudited Pro Forma Condensed Consolidated Statement of
    Operations."     
(b) Corporate development expenses represent costs incurred in connection with
    acquisitions and development of new business initiatives. These expenses
    consist primarily of allocated compensation, benefits and overhead costs
    that are not directly related to the administration or management of
    existing towers.
   
(c) Represents charges related to the issuance of stock options to employees
    and executives.     
   
(d) Represents our aggregate number of sites at the end of the period, assuming
    we had consummated the joint venture, the BellSouth transaction and the
    Powertel acquisition. As of December 31, 1998, we had contracts with 1,365
    buildings in the United States to manage on behalf of such buildings the
    leasing of space for antennas on the rooftops of such buildings. A revenue
    producing rooftop represents a rooftop where we have arranged a lease of
    space on such rooftop and, as such, are receiving payments in respect of
    our management contract. We generally do not receive any payment for
    rooftops under management unless we actually lease space on such rooftops
    to third parties. As of December 31, 1998, we had 1,284 rooftop sites under
    management throughout the United States that were not revenue producing
    rooftops but were available for leasing to customers and, in the United
    Kingdom, we had 54 revenue producing rooftop sites that were occupied by
    our transmitters but were not available for leasing to customers.     
(e) EBITDA is defined as operating income (loss) plus depreciation and
    amortization and non-cash compensation charges. EBITDA is presented as
    additional information because management believes it to be a useful
    indicator of our ability to meet debt service and capital expenditure
    requirements. It is not, however, intended as an alternative measure of
    operating results or cash flow from operations (as determined in accordance
    with generally accepted accounting principles). Furthermore, our measure of
    EBITDA may not be comparable to similarly titled measures of other
    companies.
 
                                       14
<PAGE>
 
(f) For purposes of computing the ratio of earnings to fixed charges, earnings
    represent income (loss) before income taxes, minority interests and fixed
    charges. Fixed charges consist of interest expense, the interest component
    of operating leases and amortization of deferred financing costs. For the
    year ended December 31, 1998, our earnings were insufficient to cover our
    fixed charges by $125.3 million.
   
(g) Total interest expense for the year ended December 31, 1998 includes
    amortization of deferred financing costs and discount of $47.2 million for
    CCIC, $0.9 million for CTI and $0.6 million for the Bell Atlantic joint
    venture.     
(h) Net debt represents total debt less cash and cash equivalents.
 
                                       15
<PAGE>
 
                    Summary Financial and Other Data of CCIC
   
    The summary historical consolidated financial and other data for CCIC set
forth below for each of the four years in the period ended December 31, 1998,
and as of December 31, 1995, 1996, 1997 and 1998, have been derived from the
consolidated financial statements of CCIC, which have been audited by KPMG LLP,
independent certified public accountants. The results of operations for the
year ended December 31, 1998 are not comparable to the year ended December 31,
1997, and the results for the year ended December 31, 1997 are not comparable
to the year ended December 31, 1996 as a result of business acquisitions
consummated in 1997 and 1998. Results of operations of these acquired
businesses are included in CCIC's consolidated financial statements for the
periods subsequent to the respective dates of acquisition. [D] The summary
historical financial and other data for the Restricted Group (as defined) are
not intended as alternative measures of operating results or cash flows from
operations (as determined in accordance with generally accepted accounting
principles).] The information set forth below should be read in conjunction
with "Management's Discussion and Analysis of Financial Condition and Results
of Operations--Results of Operations--CCIC" and the consolidated financial
statements and the notes thereto of CCIC included elsewhere in this document.
    
<TABLE>
<CAPTION>
                                           Years Ended December 31,
                                       ------------------------------------
                                        1995     1996      1997      1998
                                       -------  -------  --------  --------
                                            (Dollars in thousands)
<S>                                    <C>      <C>      <C>       <C>       <C>
Statement of Operations Data:
Net revenues:
  Site rental and broadcast
   transmission......................  $ 4,052  $ 5,615  $ 11,010  $ 75,028
  Network services and other.........        6      592    20,395    38,050
                                       -------  -------  --------  --------
    Total net revenues...............    4,058    6,207    31,405   113,078
                                       -------  -------  --------  --------
Costs of operations:
  Site rental and broadcast
   transmission......................    1,226    1,292     2,213    26,254
  Network services and other.........      --         8    13,137    21,564
                                       -------  -------  --------  --------
    Total costs of operations........    1,226    1,300    15,350    47,818
                                       -------  -------  --------  --------
General and administrative...........      729    1,678     6,824    23,571
Corporate development(a).............      204    1,324     5,731     4,625
Non-cash compensation charges(b) ....      --       --        --     12,758
Depreciation and amortization........      836    1,242     6,952    37,239
                                       -------  -------  --------  --------
Operating income (loss)..............    1,063      663    (3,452)  (12,933)
Other income (expense):
  Equity in earnings (losses) of
   unconsolidated affiliate..........      --       --     (1,138)    2,055
  Interest and other income
   (expense)(c)......................       53      193     1,951     4,220
  Interest expense and amortization
   of deferred financing costs.......   (1,137)  (1,803)   (9,254)  (29,089)
                                       -------  -------  --------  --------
Loss before income taxes and minority
 interests...........................      (21)    (947)  (11,893)  (35,747)
Provision for income taxes...........      --       (10)      (49)     (374)
Minority interests...................      --       --        --     (1,654)
                                       -------  -------  --------  --------
Net loss.............................      (21)    (957)  (11,942)  (37,775)
Dividends on preferred stock.........      --       --     (2,199)   (5,411)
                                       -------  -------  --------  --------
Net loss after deduction of dividends
 on preferred stock..................  $   (21) $  (957) $(14,141) $(43,186)
                                       =======  =======  ========  ========
Loss per common share--basic and di-
 luted...............................  $ (0.01) $ (0.27) $  (2.27) $  (1.02)
                                       =======  =======  ========  ========
Common shares outstanding--basic and
 diluted (in thousands)..............    3,316    3,503     6,238    42,518
                                       =======  =======  ========  ========
</TABLE>
 
                                       16
<PAGE>
 
<TABLE>
<CAPTION>
                                              Years Ended December 31,
                                         -------------------------------------
                                          1995     1996      1997      1998
                                         -------  -------  --------  ---------
                                               (Dollars in thousands)
<S>                                      <C>      <C>      <C>       <C>
Other Data:
Site data (at period end)(d):
  Towers owned..........................     126      155       240      1,344
  Towers managed........................       7        7       133        129
  Rooftop sites managed (revenue
   producing)(e)........................      41       52        80        135
                                         -------  -------  --------  ---------
    Total sites owned and managed.......     174      214       453      1,608
                                         =======  =======  ========  =========
EBITDA(f):
  Site rental........................... $ 2,697  $ 3,555  $  7,682  $  44,661
  Network services and other............    (594)    (326)    1,549     (2,972)
  Corporate development expenses(a).....    (204)  (1,324)   (5,731)    (4,625)
                                         -------  -------  --------  ---------
    Total EBITDA........................ $ 1,899  $ 1,905  $  3,500  $  37,064
                                         =======  =======  ========  =========
[D] Restricted Group EBITDA............. $ 1,899  $ 1,905  $  3,500  $   5,799
Capital expenditures....................     161      890    18,035    138,759
Summary cash flow information:
  Net cash provided by (used for)
   operating activities.................   1,672     (530)     (624)    44,976
  Net cash used for investing
   activities........................... (16,673) (13,916) (111,484)  (149,248)
  Net cash provided by financing
   activities...........................  15,597   21,193   159,843    345,248
Ratio of earnings to fixed charges(g)...     --       --        --         --
Balance Sheet Data (at period end):
Cash and cash equivalents............... $   596  $ 7,343  $ 55,078  $ 296,450
Property and equipment, net.............  16,003   26,753    81,968    592,594
Total assets............................  19,875   41,226   371,391  1,523,230
Total debt..............................  11,182   22,052   156,293    429,710
Redeemable preferred stock(h)...........   5,175   15,550   160,749    201,063
Total stockholders' equity (deficit)....     619     (210)   41,792    737,562
</TABLE>
- --------
   
(a) Corporate development expenses represent costs incurred in connection with
    acquisitions and development of new business initiatives. These expenses
    consist primarily of allocated compensation, benefits and overhead costs
    that are not directly related to the administration or management of
    existing towers. For the year ended December 31, 1997, such expenses
    include (1) nonrecurring cash bonuses of $0.9 million paid to certain
    executive officers in connection with our initial investment in Castle
    Transmission, our U.K. subsidiary, and (2) a nonrecurring cash charge of
    $1.3 million related to the purchase by CCIC of shares of common stock from
    CCIC's former chief executive officer in connection with the Castle
    Transmission investment. See "Certain Relationships and Related
    Transactions".     
(b) Represents charges related to the issuance of stock options to certain
    employees and executives.
   
(c) Includes a $1.2 million fee received in March 1997 as compensation for
    leading the investment consortium which provided the equity financing in
    connection with the Castle Transmission investment.     
(d) Represents the aggregate number of sites of CCIC as of the end of each
    period.
   
(e) As of December 31, 1998, we had contracts with 1,365 buildings in the
    United States to manage on behalf of such buildings the leasing of space
    for antennas on the rooftops of such buildings. A revenue producing rooftop
    represents a rooftop where we have arranged a lease of space on such
    rooftop and, as such, are receiving payments in respect of our management
    contract. We generally do not receive any payment for rooftops under
    management unless we actually lease space on such rooftops to third
    parties. As of December 31, 1998, we had 1,284 rooftop sites under
    management throughout the United States that were not revenue producing but
    were available for leasing to customers and, in the United Kingdom, we had
    54 revenue producing rooftop sites that were occupied by our transmitters
    but were not available for leasing to customers.     
   
(f) EBITDA is defined as operating income (loss) plus depreciation and
    amortization and non-cash compensation changes. EBITDA is presented as
    additional information because management believes it to be a useful
    indicator of our ability to meet debt service and capital expenditure
    requirements. It is not, however, intended as an alternative measure of
    operating results or cash flow from operations (as determined in accordance
    with generally accepted accounting     
 
                                       17
<PAGE>
 
      
   principles). Furthermore, our measure of EBITDA may not be comparable to
   similarly titled measures of other companies.     
(g) For purposes of computing the ratio of earnings to fixed charges, earnings
    represent income (loss) before income taxes, fixed charges and equity in
    earnings (losses) of unconsolidated affiliate. Fixed charges consist of
    interest expense, the interest component of operating leases and
    amortization of deferred financing costs. For the years ended December 31,
    1995, 1996, 1997 and 1998, earnings were insufficient to cover fixed
    charges by $21,000, $0.9 million, $10.8 million and $37.8 million,
    respectively.
   
(h) The 1995, 1996 and 1997 amounts represent (1) the senior convertible
    preferred stock we privately placed in August 1997 and October 1997, all of
    which has been converted into shares of common stock, and (2) Series A
    convertible preferred stock, Series B convertible preferred stock and
    Series C convertible preferred stock we privately placed in April 1995,
    July 1996 and February 1997, respectively, all of which has been converted
    into shares of common stock in connection with the consummation of our
    initial public offering in August 1998. The 1998 amount represents our 12
    3/4% exchangeable preferred stock.     
 
 
                                       18
<PAGE>
 
                                  RISK FACTORS
 
    You should carefully consider the risks described below, as well as the
other information included in this prospectus, when evaluating an investment in
our [E] common stock [D] notes.
   
Failure to Properly Manage the Integration Necessitated by Our Rapid Growth
Could Adversely Affect Our Performance     
   
    We have grown significantly over the past two years through acquisitions
and, as evidenced by our recent and proposed transactions, such growth
continues to be an important part of our business plan. The addition of over
4,700 towers to our tower portfolios through our recent and proposed
transactions will increase our current business considerably and will add
operating complexities. Successful integration of these transactions will
depend primarily on our ability to manage these combined operations and to
integrate new management and employees with and into our existing operations.
We cannot guarantee that we will be able to successfully integrate these
acquired businesses and assets or any future acquisitions into our business or
implement our plans without delay. If we fail to do so it could have a material
adverse effect on our financial condition and results of operations.     
   
    We regularly evaluate potential acquisition and joint venture opportunities
and are currently evaluating potential transactions that could involve
substantial expenditures, possibly in the near term. Implementation of our
acquisition strategy may impose significant strains on our management,
operating systems and financial resources. If we fail to manage our growth or
encounter unexpected difficulties during expansion it could have a material
adverse effect on our financial condition and results of operations. The
pursuit and integration of acquisitions and joint venture opportunities will
require substantial attention from our senior management, which will limit the
amount of time they are able to devote to our existing operations.     
 
Our Substantial Level of Indebtedness Could Adversely Affect Our Financial
Condition
   
    We are a highly leveraged company. The following chart sets forth certain
important credit information and is presented as of December 31, 1998, (1)
assuming we had completed our offerings and (2) assuming we had completed our
offerings and consummated the 1999 Transactions described in this prospectus,
each as of December 31, 1998.     
 
<TABLE>   
<CAPTION>
                                                                   Pro Forma
                                                                    for the
                                                                   Offerings
                                                        Pro Forma   and the
                                                         for the      1999
                                                        Offerings Transactions
                                                        --------- ------------
                                                        (Dollars in thousands)
      <S>                                               <C>       <C>
      Total indebtedness............................... $ 729,710  $ 909,710
      Redeemable preferred stock.......................   201,063    201,063
      Stockholders' equity............................. 1,114,562  1,491,562
      Debt and redeemable preferred stock to equity
       ratio...........................................     0.84x      0.74x
</TABLE>    
   
    In addition, assuming we had completed the 1999 Transactions on January 1,
1998, our earnings for the twelve months ended December 31, 1998, would have
been insufficient to cover fixed charges by $104.2 million.     
 
    Given our substantial indebtedness, we could be affected in the following
ways:
 
  .   We could be more vulnerable to general adverse economic and industry
      conditions.
 
  .   We may find it more difficult to obtain additional financing to fund
      future working capital, capital expenditures and other general
      corporate requirements.
 
                                       19
<PAGE>
 
  .   We will be required to dedicate a substantial portion of our cash flow
      from operations to the payment of principal and interest on our debt,
      reducing the available cash flow to fund other projects.
 
  .   We may have limited flexibility in planning for, or reacting to,
      changes in our business and in the industry.
 
  .   We will have a competitive disadvantage relative to other less
      leveraged companies in our industry.
   
    We cannot guarantee that we will be able to generate enough cash flow from
operations or that we will be able to obtain enough capital to service our debt
or fund our planned capital expenditures. In addition, we may need to refinance
some or all of our indebtedness on or before maturity. We cannot guarantee,
however, that we will be able to refinance our indebtedness on commercially
reasonable terms or at all.     
 
    Currently we have debt instruments in place which restrict our ability to
incur more indebtedness, pay dividends, create liens, sell assets and engage in
certain mergers and acquisitions. Some of our subsidiaries, under the debt
instruments, are also required to maintain specific financial ratios. Our
ability to comply with the restrictions of these instruments and to satisfy our
debt obligations will depend on our future operating performance. If we fail to
comply with the debt restrictions, we will be in default under those
instruments, which in some cases would cause the maturity of substantially all
of our long-term indebtedness to be accelerated. See "Description of Certain
Indebtedness" and "Description of Capital Stock--Senior Exchangeable Preferred
Stock".
   
We May Not Consummate the 1999 Transactions     
   
    We cannot guarantee that we will complete any or all of the proposed
transactions that we describe in this prospectus. The agreements with respect
to the proposed Powertel acquisition, the proposed BellSouth transaction and
the proposed One2One transaction contain many conditions that must be satisfied
before we can close these transactions.     
   
    In addition, we cannot assure you that the transactions, if and when
consummated, will be done so on the terms described in this prospectus. Each of
the agreements relating to these proposed transactions includes provisions that
could result in our purchasing fewer towers at closing. If one or more of these
transactions is not consummated or is consummated on significantly different
terms than those described in this prospectus, it could substantially affect
the implementation of our business strategy.     
          
    In connection with our entering into the acquisition agreement with
Powertel, we made a $50.0 million escrow payment, which amount, or some portion
thereof, is subject to our forfeit if the Powertel acquisition does not close
as a result of our inability or unwillingness to deliver the balance of the
purchase price at the scheduled closing date. In connection with our entering
into the agreement for the BellSouth transaction, we placed $50.0 million into
an escrow fund. We could be forced to pay this amount to BellSouth if we do not
enter into definitive agreements with respect to the BellSouth transaction, or
if we fail to comply with all conditions, covenants and representations we are
required to fulfill in connection therewith. The loss of these escrow payments,
alone or together, would significantly affect our available working capital and
could have a material adverse effect on our ability to implement our business
strategy. See "The 1999 Transactions".     
 
We Require Significant Capital to Expand Our Operations and Make Acquisitions
   
    Our business strategy contemplates substantial capital expenditures (1) in
connection with the expansion of our tower portfolios by partnering with
wireless carriers to assume ownership or control of their existing towers, by
pursuing opportunities to build new towers for wireless carriers and by     
 
                                       20
<PAGE>
 
   
pursuing other tower acquisition opportunities and (2) to acquire existing
transmission networks globally as opportunities arise. We anticipate that we
will build, through the end of 1999, approximately 750 towers in the United
States at a cost of approximately $175.0 million and approximately 200 towers
in the United Kingdom at a cost of approximately $23.0 million. We also expect
that the capital expenditure requirements related to the roll-out of digital
broadcast transmission in the United Kingdom will be approximately
(Pounds)100.0 million ($170.0 million). In addition to capital expenditures in
connection with contracted build-to-suits, we expect to apply a significant
amount of capital to finance the cash portion of the consideration being paid
in connection with the 1999 Transactions.     
   
    To fund the execution of our business strategy, including the proposed
transactions described in this prospectus, we expect to use the net proceeds of
our offerings and borrowings available under our U.S. and U.K. credit
facilities. Our business strategy, however, includes the pursuit of additional
tower acquisition and new tower construction opportunities, and we may have
additional cash needs as opportunities arise. Some of the opportunities that we
are currently pursuing could require significant additional capital. In the
event we do not otherwise have cash available, or borrowings under our credit
facilities have otherwise been utilized, when an opportunity arises, we would
be forced to seek additional debt or equity financing or to forego the
opportunity. In the event we determine to seek additional debt or equity
financing, there can be no assurance that any such financing will be available,
on commercially acceptable terms or at all, or permitted by the terms of our
existing indebtedness. To the extent we are unable to finance future capital
expenditures, we will be unable to achieve our currently contemplated business
strategy. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations--Liquidity and Capital Resources".     
   
We Will Have Broad Discretion in the Application of Proceeds from Our Offerings
       
    We will allocate a substantial portion of the estimated net proceeds from
our equity and debt offerings to fund our proposed BellSouth transaction and
our proposed Powertel acquisition, as well as for general corporate purposes.
In addition, if either or both of these transactions are not consummated, we
may use these funds for as yet unidentified acquisitions, investments or joint
ventures in the United States or abroad. In such case, we cannot determine now
how we would reallocate such proceeds. In addition, in such case we would have
broad discretion in allocating these net proceeds from the offerings without
any action or approval of our stockholders. Moreover, the indenture governing
the issuance of the notes will not contain any restrictions on the use of
proceeds from the offerings. Accordingly, investors may not have the
opportunity to evaluate the economic, financial and other relevant information
that will be considered by us in determining the application of any such net
proceeds.     
   
As a Holding Company, We Require Dividends from Subsidiaries to Meet Cash
Requirements or Pay Dividends     
   
    Crown Castle International Corp. is a holding company with no business
operations of its own. CCIC's only significant asset is the outstanding capital
stock of its subsidiaries. CCIC conducts all its business operations through
its subsidiaries. Accordingly, CCIC's only source of cash to pay dividends or
make other distributions on its capital stock or to pay interest on its
outstanding indebtedness is distributions with respect to its ownership
interest in its subsidiaries from the net earnings and cash flow generated by
such subsidiaries. Although the notes will not require cash interest payments
until    , at such time the notes will have accreted to $   million and will
require annual cash interest payments of   . In addition, the notes mature on
  . In addition, we will be required to begin paying cash interest payments on
our 10 5/8% discount notes in May 2003 and on our 12 3/4% exchangeable
preferred stock in March 2004. We currently expect that the earnings and cash
flow of CCIC's subsidiaries will be retained and used by such subsidiaries in
their     
 
                                       21
<PAGE>
 
   
operations, including to service their respective debt obligations. Even if we
determine to make a distribution in respect of the capital stock of CCIC's
subsidiaries, there can be no assurance that CCIC's subsidiaries will generate
sufficient cash flow to pay such a dividend or distribute such funds to CCIC or
that applicable state law and contractual restrictions, including negative
covenants contained in the debt instruments of such subsidiaries, would permit
such dividends or distributions. Furthermore, the terms of our U.S. and U.K.
credit facilities place restrictions on our principal subsidiaries' ability to
pay dividends or to make distributions, and in any event, such dividends or
distributions may only be paid if no default has occurred under the applicable
instrument. In addition, CCIC's subsidiaries will be permitted under the terms
of their existing debt instruments to incur additional indebtedness that may
restrict or prohibit the making of distributions, the payment of dividends or
the making of loans by such subsidiaries to CCIC. See "--Our Substantial Level
of Indebtedness Could Adversely Affect Our Financial Condition" and
"Description of Certain Indebtedness".     
 
Our Agreements with TdF Give TdF Substantial Governance and Economic Rights
 
    We have entered into agreements with TdF that give TdF significant
protective rights with respect to the governance of CCIC and CTI, the ownership
of CTI and the disposition of shares in CCIC and CTI. CTI's operations
currently account for a substantial majority of our revenues.
   
TdF's Governance Rights May Prevent Us From Taking Actions Our Board of
Directors Consider to Be in the Best Interest of Our Securityholders     
 
    We have granted TdF the ability to govern some of our activities, including
the ability to:
 
  .  prohibit us from entering into certain material transactions, including
     material acquisitions;
 
  .  elect up to two members of our Board of Directors; and
 
  .  elect at least one director to the executive and nominating and
     corporate governance committees of our Board of Directors.
   
    In addition, TdF has significant governance rights over CTI. Although TdF
currently has only a 20% equity interest in CTI, TdF has the right to restrict
a number of corporate actions at CTI.     
 
    TdF's exercise of these rights could be contrary to your interests and
could prevent us from conducting some activities that our Board of Directors
consider to be in our best interests and the best interests of our
shareholders. See "Certain Relationships and Related Transactions--Agreements
with TdF Related to the Roll Up--Governance Agreement".
   
TdF Has an Option to Acquire Our U.K. Operations in Connection with a Sale of
CCIC     
 
    Under the circumstances described below, TdF also will have the right to
acquire all of our shares in CTSH or to require us to purchase all of TdF's
shares in CTSH, at fair market value in either case. This right will be
triggered under the following circumstances:
 
  .  the sale of all or substantially all of our assets;
 
  .  a merger, consolidation or similar transaction that would result in any
     person owning more than 50% of our voting power or equity securities;
 
  .  an unsolicited acquisition by any person of more than 25% of our voting
     power or equity securities; or
 
  .  other circumstances arising from an acquisition by any person that
     would give rise to a right of the BBC to terminate our analog or
     digital transmission contracts with the BBC.
 
    Further, immediately before any of these events occurs, TdF will have the
right to require us to purchase 50% of their Class A common stock in cash at
the same price we would have to pay once the event occurs.
 
                                       22
<PAGE>
 
    If we were required to sell our shares in CTSH to TdF, we would no longer
own our U.K. business. On the other hand, if we were required to purchase all
of TdF's shares in CTSH and/or purchase 50% of their Class A common stock, we
cannot guarantee that we would have the necessary funds to do so or that we
would be permitted to do so under our debt instruments. If we did not have
sufficient funds, we would have to seek additional financing. We cannot
guarantee, however, that such financing would be available on commercially
reasonable terms or at all. If such financing were not available, we might be
forced to sell certain other assets at unfavorable prices in order to generate
the cash needed to buy the shares from TdF. In addition, our obligation to
purchase TdF's shares could result in an event of default under our debt
instruments.
   
TdF Has an Option to Put Its Interest in Our U.K. Operations to Us for Cash
    
    Under certain other circumstances, TdF will have the right to require us to
purchase all of their shares in CTSH, at fair market value. We may elect to pay
either (1) in cash or (2) with our common stock at a discount of 15% to its
market value. We cannot guarantee that we will have sufficient funds to
purchase such shares for cash if TdF were to require us to purchase their
shares of capital stock of CTSH. If we did not have sufficient funds, we would
either need to seek additional financing or purchase the shares with our common
stock. We cannot guarantee that we could obtain such financing on terms
acceptable to us. If we were to issue shares of common stock to effect the
purchase, this would result in substantial dilution of our other stockholders,
could adversely affect the market prices of the common stock and could impair
our ability to raise additional capital through the sale of our equity
securities. [E] See "--This Offering will Result in Substantial Dilution to the
Value of Our Common Stock".
   
TdF Has Preemptive Rights to Acquire Our Common Stock When We Otherwise Issue
Common Stock     
   
    Except in certain circumstances, if we issue any equity securities (other
than equity that is mandatorily exchangeable for debt, such as the exchangeable
preferred stock) to any person, including the equity offering and in connection
with the formation of the Bell Atlantic joint venture and the proposed
BellSouth transaction, we must offer TdF the right to purchase, at the same
cash price and on the same other terms proposed, up to the amount of such
equity securities as would be necessary for TdF and its affiliates to maintain
their consolidated ownership percentage in us. [E] See "--This Offering will
Result in Substantial Dilution to the Value of Our Common Stock".     
   
We May Not Be Able to Construct New Towers at the Pace and in the Locations
that We Desire     
   
    Our growth strategy depends in part on our ability to construct and operate
towers in conjunction with expansion by wireless carriers. As of December 31,
1998, we had 72 towers under construction. We currently have plans to commence
construction on approximately 800 to 1,100 additional towers during fiscal
1999. Our ability to construct new towers can be affected by a number of
factors beyond our control, including:     
 
  .  zoning and local permitting requirements and national regulatory
     approvals;
 
  .  availability of construction equipment and skilled construction
     personnel; and
 
  .  bad weather conditions.
 
    In addition, as the concern over tower proliferation has grown in recent
years, certain communities have placed restrictions on new tower construction
or have delayed granting permits required for construction. You should consider
that:
 
  .  the barriers to new construction may prevent us from building towers
     where we want;
 
                                       23
<PAGE>
 
  .  we may not be able to complete the number of towers planned for
     construction in accordance with the requirements of our customers; and
 
  .  we cannot guarantee that there will be a significant need for the
     construction of new towers once the wireless carriers complete the
     build-out of their tower network infrastructure.
         
       
Our Business Depends on the Demand for Wireless Communications
   
    Demand for our site rentals depends on demand for communication sites from
wireless carriers, which, in turn, depends on the demand for wireless services.
The demand for our sites depends on certain factors which we cannot control,
including:     
 
  .  the level of demand for wireless services generally;
 
  .  the financial condition and access to capital of wireless carriers;
 
  .  the strategy of carriers with respect to owning or leasing
     communication sites;
 
  .  changes in telecommunications regulations; and
 
    .general economic conditions.
          
    A slowdown in the growth of, or reduction in, demand in a particular
wireless segment could adversely affect the demand for communication sites.
Moreover, wireless carriers often operate with substantial leverage, and
financial problems for our customers could result in accounts receivable going
uncollected, in the loss of a customer and the associated lease revenue or in a
reduced ability of these customers to finance expansion activities. Finally,
advances in technology, such as the development of new satellite systems, could
reduce the need for land-based transmission and reception networks. The
occurrence of any of these factors could have a material adverse effect on our
financial condition and results of operations.     
 
Variability in Demand for Network Services May Reduce the Predictability of Our
Results
 
    Demand for our network services fluctuates from period to period and within
periods. These fluctuations are caused by a number of factors, including:
 
  .  the timing of customers' capital expenditures;
 
  .  annual budgetary considerations of customers;
 
  .  the rate and volume of wireless carriers' tower build-outs;
 
  .  timing of existing customer contracts; and
 
  .  general economic conditions.
 
    While demand for our network services fluctuates, we must incur certain
costs, such as maintaining a staff of network services employees in
anticipation of future contracts, even when there may be no current business.
Consequently, the operating results of our network services businesses for any
particular period may vary significantly, and should not be considered as
necessarily being indicative of longer-term results. Furthermore, as wireless
carriers complete their build-outs, the need for the construction of new towers
and the demand for certain network services could decrease significantly and
could result in fluctuations and, possibly, significant declines in our
operating performance.
   
We Operate our Business in an Increasingly Competitive Industry and Many of Our
Competitors Have Significantly More Resources     
 
    We face competition for site rental customers from various sources,
including:
 
  .  other large independent tower owners;
 
                                       24
<PAGE>
 
  .  wireless carriers that own and operate their own tower footprints and
     lease antenna space to other carriers;
 
  .  site development companies which acquire antenna space on existing
     towers for wireless carriers and manage new tower construction; and
 
  .  traditional local independent tower operators.
   
    Wireless carriers that own and operate their own tower portfolios generally
are substantially larger and have greater financial resources than we have. We
believe that tower location and capacity, price, quality of service and density
within a geographic market historically have been and will continue to be the
most significant competitive factors affecting the site rental business.     
   
    Competition for the acquisition of towers is keen, and we expect it to
continue to grow. We not only compete against other independent tower owners
and operators, but also against wireless carriers, broadcasters and site
developers. As competition increases for tower acquisitions, we may be faced
with fewer acquisition opportunities, as well as higher acquisition prices.
While we regularly explore acquisition opportunities, we cannot guarantee that
we will be able to identify suitable towers to acquire in the future.     
       
          
A Substantial Portion of Our Revenues Is Dependent Upon Agreements with Several
Business Partners     
   
    Assuming we had completed the roll-up of our U.K. subsidiary to 80%
ownership (the "Roll-Up") and the 1999 Transactions, each as of January 1,
1998, the BBC would have still accounted for approximately 25.1% of our
revenues for the twelve month period ended December 31, 1998.     
   
    Our broadcast transmission business is substantially dependent on our
contracts with the BBC. See "Business--U.K. Operations--Significant Contracts".
The initial term of our analog transmission contract with the BBC will expire
on March 31, 2007, and our digital transmission contract with the BBC expires
on October 31, 2010. In addition, our digital transmission contract with the
BBC may be terminated by the BBC after five years if the BBC's board of
governors does not believe that digital television in the United Kingdom has
enough viewers. We cannot guarantee that the BBC will renew these contracts or
that they will not attempt to negotiate terms that are not as favorable to us
as those in place now. If we were to lose these BBC contracts, our business,
results of operations and financial condition would be materially adversely
affected.     
   
    In order to optimize service coverage in the United Kingdom and enable
viewers to receive all analog UHF television services using one receiving
antenna, CTI and NTL have agreed to share all UHF television sites. See
"Business--U.K. Operations--Significant Contracts". We are currently in
negotiations with NTL to amend the agreement to reflect the build-out of
digital transmission sites and equipment, new rates for site sharing fees for
new digital facilities and revised operating and maintenance procedures for the
new equipment. This agreement may be terminated with five years' notice by
either CTI or NTL, and is set to expire on December 31, 2005. We cannot
guarantee that this agreement will not be terminated, which could have a
material adverse effect on our business, results of operations and financial
condition.     
   
We Are Subject to Extensive Regulations Which Could Change at Any Time and
Which We Could Fail to Comply With     
   
    We are subject to a variety of foreign, federal, state and local
regulation. Failure to comply with applicable requirements may lead to civil
penalties or require us to assume costly indemnification obligations. We cannot
guarantee that existing regulatory policies will not adversely affect the
timing or cost of new tower construction or that additional regulations will
not be adopted which increase delays or result in additional costs. These
factors could have a material adverse effect on our financial condition and
results of operations.     
 
                                       25
<PAGE>
 
          
    Since we signed our analog transmission contract with the BBC, the BBC has
increased its service requirements to include 24-hour broadcasting on our
terrestrial transmission network for the BBC's two national television services
and a requirement for CTI to add a number of filler stations to its network to
extend existing BBC services. The BBC has agreed to increases of approximately
(Pounds)800,000 ($1,330,240) per year in the charges payable by the BBC to CTI
for these service enhancements. The additional charges may necessitate an
amendment to CTI's Transmission Telecommunications License. OFTEL, the relevant
regulatory authority in the United Kingdom, has confirmed in initial
discussions with CTI that it is not OFTEL's intention to prevent the provision
of such additional services to the BBC at an additional charge. CTI is
discussing with OFTEL the most appropriate way to rectify this situation in
order to allow the additional services to be provided to the BBC in return for
the additional agreed payments. While we expect the license to be amended,
there can be no assurance as to the final resolution of these issues with
OFTEL.     
 
    Our customers may also become subject to new regulations or regulatory
policies which adversely affect the demand for communication sites. In
addition, as we pursue international opportunities, we will be subject to
regulation in foreign jurisdictions.
       
Costs of Compliance with Environmental Laws Could Adversely Affect Our
Financial Condition
   
    Our operations are subject to foreign, federal, state and local laws and
regulations regarding the management, use, storage, disposal, emission, release
and remediation of, and exposure to, hazardous and nonhazardous substances,
materials or wastes. Under certain environmental laws, we could be held liable
for the remediation of hazardous substance contamination at current or former
facilities or at third-party waste disposal sites, and we also could be subject
to personal injury or property damage claims related to such contamination. We
cannot guarantee that costs of compliance with existing or future environmental
laws will not have a material adverse effect on our financial condition and
results of operations. See "Business--Environmental Matters".     
 
Emissions from Our Antennas May Create Health Risks
   
    Our towers are subject to government requirements and other guidelines
relating to radio frequency emissions. The potential connection between radio
frequency emissions and certain negative health effects, including some forms
of cancer, has been the subject of substantial study by the scientific
community in recent years. To date, the results of these studies have been
inconclusive. We cannot guarantee that we will not be subject to claims
relating to radio frequency emissions in the future.     
   
Our International Operations Expose Us to Currency Risks     
   
    We conduct business in countries outside the United States, which exposes
us to fluctuations in foreign currency exchange rates. For the twelve month
period ended December 31, 1998, assuming we had completed the Roll-Up on
January 1, 1998, but without giving effect to the 1999 Transactions,
approximately 74.3% of our consolidated revenues would have originated outside
the United States, all of which were denominated in currencies other than U.S.
dollars (principally pounds sterling). We have not historically engaged in
significant hedging activities with respect to our non-U.S. dollar operations.
    
       
We Are Heavily Dependent on Our Senior Management
   
    Our existing operations and continued future development are dependent to a
significant extent upon the performance and active participation of certain key
individuals, including our chief executive officer and the chief operating
officers of our principal U.S. and U.K. subsidiaries. We cannot guarantee that
we will be successful in retaining the services of these, or other key
personnel. None     
 
                                       26
<PAGE>
 
of our employees have signed noncompetition agreements. If we were to lose any
of these individuals, our financial condition and results of operations could
be materially adversely affected.
 
[D] The Notes Are Subject to the Risk of Fraudulent Conveyance Liability
 
    Various laws enacted for the protection of creditors may apply to our
incurrence of indebtedness, including the issuance of the notes in this
offering. If a court were to find in a lawsuit by an unpaid creditor or
representative of creditors that we did not receive fair consideration or
reasonably equivalent value for incurring such indebtedness or obligation and,
at the time of such incurrence, we (1) were insolvent; (2) were rendered
insolvent by reason of such incurrence; (3) were engaged in a business or
transaction for which our remaining assets constituted unreasonably small
capital; or (4) intended to incur or believe we would incur obligations beyond
our ability to pay such obligations as they mature, such court, subject to
applicable statutes of limitation, could determine to invalidate, in whole or
in part, such indebtedness and obligations as fraudulent conveyances or
subordinate such indebtedness and obligations to existing or future creditors.
 
[D] Original Issue Discount Will Accrue on the Notes and Create a Tax Liability
for Noteholders
 
    The notes will be issued at a substantial discount from their stated
principal amount at maturity. Consequently, although cash interest on the notes
generally will not be payable prior to      , 2004, original issue discount
will be includable in the gross income of a holder of the notes for U.S.
federal income tax purposes in advance of the receipt of such cash payments on
the notes. See "Certain United States Federal Income Tax Considerations" for a
more detailed discussion on the U.S. federal income tax consequences of
purchase, ownership and disposition of the notes.
 
    If a bankruptcy case is commenced by or against us under the U.S.
Bankruptcy Code after the issuance of the notes, the claim of a holder of notes
with respect to the principal amount thereof may be limited to an amount equal
to the sum of (1) the initial offering price and (2) that portion of the
original issue discount that is not deemed to constitute "unmatured interest"
for purposes of the U.S. Bankruptcy Code. Any OID that was not accrued as of
any such bankruptcy filing would constitute "unmatured interest."
 
    If the notes provide initial holders with a yield to maturity which equals
or exceeds the Treasury-based interest rate in effect for the month of their
issuance plus five percentage points, then we will not be able to deduct
original issue discount with respect to the notes until paid. In the event that
such yield to maturity exceeds such interest rate plus six percentage points,
then we may not be able to deduct a portion of such original issue discount.
See "Certain United States Federal Income Tax Considerations--U.S. Holders--
Applicable High Yield Discount Obligations".
   
[E] We Could Lose Certain Tax Benefits Due to the Equity Offering     
   
    If, as a result of any transaction involving our equity securities, an
ownership change occurs for federal income tax purposes, our ability to use our
net operating losses to offset taxable income, and thereby reduce our tax
liability, would be severely limited. Under Section 382 of the Internal Revenue
Code of 1986, as amended, an ownership change would be deemed to have occurred
if on any testing date the ownership of stock by one or more 5-percent
shareholders had increased by more than 50 percentage points during the
preceding three years. The need to preserve our net operating losses by
complying with the limitations imposed by Section 382 may limit our ability to
raise equity financing in the future.     
 
    The common stock sold in this offering will be deemed, for purposes of
Section 382, to have been acquired by a separate public group treated as a new
5-percent shareholder which had an
 
                                       27
<PAGE>
 
increase in ownership. The ownership increase by this new public group, as well
as any ownership increase by other 5-percent shareholders, must be taken into
account in determining whether we have undergone an ownership change under
Section 382.
 
    It is unclear whether the offering will result in an ownership change.
However, we have taken and must continue to take into account the public group
ownership increase resulting from the common stock sold in the offering for
three years after the sale in computing the change in ownership for future
transactions (including the issuance of additional common stock or equity-
related instruments).
 
We are Subject to Year 2000 Compliance Problems
 
    We are in the process of conducting a comprehensive review of our computer
systems to identify which of our systems will need to be modified, upgraded or
converted to recognize dates after December 31, 1999, which is known as the
year 2000 problem. The failure to correct a material year 2000 problem could
result in a system failure, such as the failure of tower lighting or security
monitoring systems, or miscalculations causing disruption of operations
including, among other things, a temporary inability to process transactions,
send invoices, or engage in similar normal business activities.
          
    We cannot assure you that we will be able to resolve all year 2000
compliance issues without any future disruption or that we will not incur
significant additional expense in attempting to do so. In addition, if some of
our major suppliers and customers fail to address their own year 2000
compliance issues, their non-compliance could have a material adverse effect on
us and our operations.     
 
[E] Anti-Takeover Provisions in Our Certificate of Incorporation Could Have
Effects That Conflict with the Interests of Our Stockholders
 
    Certain provisions of our certificate of incorporation, by-laws and
operative agreements entered into in connection with the Roll-Up could make it
more difficult for a third party to acquire control of us even if such change
in control would be beneficial to our stockholders. These provisions include:
 
  .  the right of the holders of our Class A common stock to elect up to two
     members of the Board of Directors;
 
  .  a staggered Board of Directors;
 
  .  the authority of the Board of Directors to issue preferred stock
     without approval of the holders of common stock (other than the holders
     of our Class A common stock);
 
  .  the establishment of advance notice requirements for director
     nominations and actions to be taken at annual meetings; and
 
  .  the requirement that the holders of our Class A common stock approve
     certain changes to the certificate of incorporation or the by-laws.
 
    In addition, our by-laws permit special meetings of the stockholders to be
called only upon the request of a majority of the Board of Directors, and deny
stockholders the ability to call such meetings. Pursuant to the governance
agreement with TdF, TdF generally will have the right to purchase our equity
interest in CTSH upon the occurrence of an acquisition of us that is not
approved by TdF. In addition, subject to certain limitations, our BBC contracts
may be terminated upon the occurrence of certain change of control events (as
defined in such contracts). Such provisions, as well as the provisions of
Section 203 of the Delaware General Corporation Law (to which we are subject),
could impede a merger, consolidation, takeover or other business combination or
discourage a potential acquirer from making a tender offer or otherwise
attempting to obtain
 
                                       28
<PAGE>
 
control of us. In certain circumstances, the fact that corporate devices are in
place that will hinder takeover attempts could reduce the market value of our
common stock. See "--Our agreements with TdF Give TdF Substantial Governance
and Economic Rights" and "Description of Capital Stock".
 
[E] Sales of a Substantial Number of Shares of Common Stock After the Equity
Offering Could Adversely Affect the Market Price of the Common Stock
 
    Upon completion of the equity offering, we will have    shares of common
stock outstanding. In addition, we have reserved for issuance    shares of
common stock upon exercise of outstanding stock options,    shares of common
stock upon exercise of outstanding warrants and    shares of common stock for
the conversion of the outstanding Class A common stock. The    shares sold in
the offering will be freely transferable without restriction under the
Securities Act, unless they are held by our "affiliates" as that term is used
under the Securities Act. See "Shares Eligible for Future Sale".
 
[E] This Offering Will Result in Substantial Dilution to the Value of Our
Common Stock
   
    Persons purchasing shares of common stock in the equity offering will incur
immediate and substantial dilution in net tangible book value per share.
Purchasers of shares in the equity offering will experience dilution of $   per
share. In addition, until the second anniversary of the closing of the Roll-Up,
TdF has the right, and in certain circumstances we can require TdF, to exchange
its CTSH shares and warrants for CTSH shares for shares of our Class A common
stock (which is convertible into our common stock) and warrants for our Class A
common stock (which is convertible into our common stock). Such exchange would
be based on the exchange ratio used in the Roll-Up and, as a result, could
result in substantial additional dilution. Furthermore, following the second
anniversary of the Roll-Up, unless TdF shall have previously exchanged its
shares of capital stock of CTSH in accordance with the governance agreement,
TdF can require us to purchase all of TdF's equity interest in CTSH at its fair
market value, which purchase may be made, at our election, in shares of common
stock valued at a discount of 15% to its then current market value. See "--Our
Agreements with TdF Give TdF Substantial Governance and Economic Rights". If we
were to make such an election, it would result in substantial additional
dilution. See "--Our Agreements with TdF Give TdF Substantial Governance and
Economic Rights" and "Dilution". In addition, to the extent that outstanding
options and warrants to purchase common stock are exercised, there could be
substantial additional dilution.     
   
    Except in certain circumstances, if we issue any equity securities (other
than equity that is mandatorily exchangeable for debt, such as the exchangeable
preferred stock) to any person, including the equity offering and in connection
with the proposed BellSouth transaction, we must offer TdF the right to
purchase, at the same cash price and on the same other terms proposed, up to
the amount of such equity securities as would be necessary for TdF and its
affiliates to maintain their consolidated ownership interest in us. TdF will be
able to exercise such preemptive rights in connection with our acquisition of
Millennium Communications Limited in the United Kingdom on October 8, 1998 and
in connection with our contribution of shares of our common stock to the Bell
Atlantic joint venture and our payment of consideration in connection with the
proposed BellSouth transaction. If TdF exercises its preemptive rights, it will
be able to acquire up to 125,000 shares of our common stock at a price of
$13.00 per share as a result of the Millennium acquisition, up to 5.42 million
shares at a price of $12.65 per share in connection with Bell Atlantic joint
venture. TdF will also have preemptive rights in connection with the closing of
the proposed BellSouth transaction.     
 
[E] Fluctuations in Business Activity May Result in Volatility of Share Price
 
    The market price of the common stock after the equity offering may be
significantly affected by factors such as quarterly variations in our results
of operations, the announcement of new contracts
 
                                       29
<PAGE>
 
by us or our competitors, technological innovation by us or our competitors and
general market conditions specific to particular industries. Such fluctuations
may adversely affect the market price of the common stock.
 
[D] There is Currently No Market for the Notes
 
    The notes are a new issue of securities for which there is currently no
trading market. The underwriters have advised us that they intend to make a
market in the notes, although the underwriters are not obligated to do so and
may discontinue such market making at any time. We do not intend to apply for
listing of the notes on any domestic securities exchange or to seek approval
for quotation through an automated quotation system. Accordingly, there can be
no assurance that an active market will develop upon completion of the debt
offering or, if developed, that such market will be sustained or as to the
liquidity of any market.
 
This Document Includes Forward-Looking Statements
 
    This document includes "forward-looking statements" within the meaning of
Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934. All statements other than statements of historical facts
included in this document, including, without limitation, the statements under
"Prospectus Summary", "Management's Discussion and Analysis of Financial
Condition and Results of Operations", "Industry Background" and "Business" and
located elsewhere in this document regarding industry prospects, our prospects
and our financial position are forward-looking statements. Although we believe
that the expectations reflected in such forward-looking statements are
reasonable, we can give no assurance that such expectations will prove to have
been correct. Important factors that could cause actual results to differ
materially from our expectations are disclosed in this document, including,
without limitation, in conjunction with the forward-looking statements included
under "Risk Factors". All subsequent written and oral forward-looking
statements attributable to us or persons acting on our behalf are expressly
qualified in their entirety by the cautionary statements included in this
document. We undertake no obligation to publicly update or revise any forward-
looking statements, whether as a result of new information, future events or
otherwise. In light of these risks, uncertainties and assumptions, the forward-
looking events discussed in this document might not occur.
 
                                       30
<PAGE>
 
                                USE OF PROCEEDS
 
    [D] The net proceeds from the debt offering are estimated to be $
million, after deducting estimated fees and expenses. Concurrently with the
debt offering, we are offering    shares of our common stock. The closing of
the debt offering is conditioned upon the closing of the equity offering.
 
    [E] The net proceeds from the equity offering are estimated to be
approximately $   million, after deducting estimated fees and expenses.
Concurrently with the equity offering, we are offering $   million principal
amount at maturity of our   % Senior Discount Notes due 2011. The closing of
the equity offering is conditioned upon the closing of the debt offering.
   
    We expect to use the total net proceeds of the debt and equity offerings,
which are estimated to be $   million, to repay a term loan facility incurred
to finance a portion of the proposed BellSouth transaction and the proposed
Powertel acquisition, to finance the balance of the proposed BellSouth
transaction and the proposed Powertel acquisition and for general corporate
purposes. The loans we are repaying under the term loan facility were used to
refinance indebtedness under Crown Communication's senior credit facility. The
term loans mature on November 30, 2007 and bear interest at an increasing rate
on LIBOR, not to exceed 16.0%.     
   
    However, the closing of the offerings is not contingent on the consummation
of the proposed BellSouth transaction or the proposed Powertel acquisition. If
the proposed BellSouth transaction or the proposed Powertel acquisition does
not occur, or if either or both occurs on terms different from those described,
we would be able to use the net proceeds from the offerings that were allocated
to finance the proposed BellSouth transaction and proposed Powertel acquisition
for working capital and general corporate purposes, including to finance as yet
unidentified acquisitions, investments or joint ventures in the United States
or abroad. In that situation, we would have broad discretion in allocating a
significant portion of the net proceeds from the offerings without action or
approval of [D] the holders of the discount notes [E] the holders of our common
stock. Accordingly, if the proposed BellSouth transaction or the proposed
Powertel acquisition is not consummated as described in this prospectus,
holders of our [D] discount notes [E] common stock would not have the
opportunity to evaluate the economic, financial and other relevant information
that we would consider in determining the application of the net proceeds of
the offerings.     
 
                        [E] PRICE RANGE OF COMMON STOCK
 
    Our common stock is listed and traded on the Nasdaq National Market under
the symbol "TWRS". The following table sets forth for the periods indicated the
high and low sale prices of the common stock as reported by Nasdaq:
 
<TABLE>
<CAPTION>
                                                                   High   Low
                                                                  ------ ------
      <S>                                                         <C>    <C>
      1998
        Third Quarter............................................ $13.31 $ 6.00
        Fourth Quarter...........................................  23.50   9.87
      1999
        First Quarter (through March 15, 1999)................... $23.50 $16.63
</TABLE>
 
    On March 15, 1999, the last reported sale price of the common stock as
reported by Nasdaq was $19.94. As of March 15, 1999, there were approximately
256 holders of record of the common stock.
 
                                       31
<PAGE>
 
                              [E] DIVIDEND POLICY
   
    We have never declared or paid any cash dividends on our capital stock and
do not anticipate paying cash dividends on our capital stock in the foreseeable
future. It is our current policy to retain earnings to finance the expansion of
our operations. Future declaration and payment of dividends, if any, will be
determined in light of the then-current conditions, including our earnings,
operations, capital requirements, financial condition and other factors deemed
relevant by the Board of Directors. In addition, our ability to pay dividends
is limited by the terms of our debt instruments and the terms of the
certificate of designations in respect of our exchangeable preferred stock. See
"Description of Certain Indebtedness" and "Description of Capital Stock".     
 
                                  [E] DILUTION
   
    Dilution is the amount by which the offering price paid by the purchasers
of the common stock will exceed the net tangible book value per share of common
stock after the offerings. Net tangible book value per share is determined at
any date by subtracting our total liabilities and minority interests from the
total book value of our tangible assets and dividing the difference by the
number of shares of common stock deemed to be outstanding (including shares
issuable upon conversion of outstanding shares of Class A common stock) at such
date.     
   
    Our net tangible book value on December 31, 1998, after subtracting the
interests of the preferred shareholders, was approximately $   or $   per
share. After giving effect to the receipt of approximately $   million of
estimated net proceeds from our sale of    shares of common stock pursuant to
the offering, our pro forma net tangible book value at December 31, 1998 would
have been approximately $   million or $   per share. This represents an
immediate increase in pro forma net tangible book value of $   per share to the
existing stockholders and an immediate dilution of $   per share to new
investors purchasing shares of common stock in the offering. The following
table illustrates the substantial and immediate per share dilution to new
investors:     
 
<TABLE>
<CAPTION>
                                                                        Per Share
                                                                        ---------
      <S>                                                               <C>
      Public offering price per share (a)..............................
        Pro forma net tangible book value before the offering..........
        Increase per share attributable to new investors...............
      Pro forma net tangible book value after the offerings............
      Dilution per share to new investors (b)..........................
</TABLE>
     --------
     (a) Before deducting underwriting discounts and estimated transaction
         fees and expenses of $   million to be paid by us in connection
         with the offering.
     (b) Dilution is determined by subtracting net tangible book value per
         share after the offering from the amount assumed paid by a new
         investor per share of common stock.
   
    All of the foregoing computations include the 11,340,000 shares of Class A
common stock owned by DFI, which are convertible into an aggregate of
11,340,000 shares of common stock. See "Certain Relationships and Related
Transactions--Agreements with TdF Related to the Roll-Up". The foregoing tables
and discussion assume no exercise of stock options or warrants after December
31, 1998 and exclude (1)    shares issuable upon exercise of stock options
outstanding as of December 31, 1998 having a weighted average exercise price of
$   per share under our 1995 Stock Option Plan, (2)    additional shares
authorized for issuance under our 1995 Stock Option Plan, (3) warrants to
purchase 1,314,990 shares of common stock at an exercise price of $7.50 per
share and (4) 17,443,500 additional shares of common stock issuable upon
exercise of the TdF's put     
 
                                       32
<PAGE>
 
   
right or our call right. In addition, following the second anniversary of the
Roll-Up, unless TdF shall have previously exchanged its shares of capital stock
of CTSH in accordance with the governance agreement, TdF may require us to
repurchase the shares of capital stock of CTSH held by TdF at fair market
value. Pursuant to the governance agreement, we could elect to pay for such
shares in shares of its common stock at a discount of 15% to their market
value. See "Risk Factors--Our Agreements with TdF Give TdF Substantial
Governance and Economic Rights". If we were to issue shares of our common stock
to effect the purchase, such issuance would result in substantial dilution to
our other stockholders. In addition, TdF has the right to acquire additional
shares of common stock pursuant to its preemptive rights under the governance
agreement. These shares may, in some cases (such as in connection with the Bell
Atlantic joint venture) result in TdF having the right to acquire shares at
below the then current public market price. Since December 31, 1998, we have
granted options to purchase an additional    shares of common stock, of which
options for    shares have an exercise price of $   and options for     shares
have an exercise price of $  . To the extent that outstanding stock options or
warrants are exercised, there will be further dilution to new investors. See
"Risk Factors--Our Agreements with TdF Give TdF Substantial Governance and
Economic Rights", "--This Offering Will Result in Substantial Dilution to the
Value of Our Common Stock", "Capitalization", "Management--Executive
Compensation--Stock Option Plan" and Notes 8 and 9 of Notes to Consolidated
Financial Statements.     
 
                                       33
<PAGE>
 
                                 CAPITALIZATION
   
    The following table sets forth as of December 31, 1998 (1) our historical
capitalization, (2) our pro forma capitalization after giving effect to our
offerings and (3) our pro forma capitalization after giving effect to such
offerings and the 1999 Transactions. The information set forth below should be
read in conjunction with "Unaudited Pro Forma Condensed Consolidated Financial
Statements", "Management's Discussion and Analysis of Financial Condition and
Results of Operations" and the consolidated financial statements and the notes
thereto included elsewhere in this document. The 1999 Transactions are not
contingent upon our offerings. See "Unaudited Pro Forma Condensed Consolidated
Financial Statements" for detail regarding the pro forma adjustments.     
 
<TABLE>   
<CAPTION>
                                                   December 31, 1998
                                         ---------------------------------------
                                                                     Pro Forma
                                                                   for Offerings
                                                                        and
                                                       Pro Forma       1999
                                           Actual    for Offerings Transactions
                                         ----------  ------------- -------------
                                          (Dollars in thousands, except share
                                                        amounts)
<S>                                      <C>         <C>           <C>
Cash and cash equivalents(a)...........  $  296,450   $  962,575    $   49,583
                                         ==========   ==========    ==========
Notes payable and current maturities of
 long-term debt........................  $      --    $      --     $      --
                                         ==========   ==========    ==========
Long-term debt (less current
 maturities):
 Senior Credit Facility(b).............  $    5,500       $5,500        $5,500
 10 5/8% Senior Discount Notes due
  2007.................................     168,099      168,099       168,099
 CTI Credit Facility(b)................      55,177       55,177        55,177
 9% Guaranteed Bonds due 2007..........     200,934      200,934       200,934
 Bell Atlantic Joint Venture Credit
  Facility.............................         --           --        180,000
 Notes offered [D] hereby [E]
  concurrently.........................         --       300,000       300,000
                                         ----------   ----------    ----------
  Total long-term debt(a)..............     429,710      729,710       909,710
                                         ----------   ----------    ----------
Minority interests.....................      39,185       39,185        50,915
Redeemable preferred stock:
 Exchangeable Preferred Stock ($.01 par
  value; 400,000 shares authorized;
  200,000 shares issued)(a)............     201,063      201,063       201,063
Stockholders' equity:
 Common stock ($.01 par value;
  690,000,000 shares authorized):
  Common stock (83,123,873 shares
   issued, actual;   shares issued, pro
   forma for offerings; and    shares
   issued, pro forma for the offerings
   and the Proposed Transactions)(c)...         831          831           831
  Class A common stock (11,340,000
   shares issued)......................         113          113           113
 Additional paid-in capital(c).........     795,153    1,175,153     1,552,153
 Cumulative foreign currency
  translation adjustment...............       1,690        1,690         1,690
 Accumulated deficit...................     (60,225)     (63,225)      (63,225)
                                         ----------   ----------    ----------
  Total stockholders' equity(a)........     737,562    1,114,562     1,491,562
                                         ----------   ----------    ----------
   Total capitalization(a).............  $1,407,520   $2,084,520    $2,653,250
                                         ==========   ==========    ==========
</TABLE>    
- --------
   
(a) [D] On a pro forma basis for our offerings and the 1999 Transactions, the
    Restricted Group (as defined) would have cash and cash equivalents, total
    long-term debt, redeemable preferred stock, total stockholders' equity and
    total capitalization of $3.3 million, $473.6 million, $201.1 million,
    $1,491.6 million, and $2,166.2 million, respectively. See "Unaudited Pro
    Forma Condensed Consolidated Financial Statements--Notes to Unaudited Pro
    Forma Condensed Consolidated Balance Sheet".     
   
(b) As of March 1, 1999, our principal U.S. subsidiary, Crown Communication,
    had unused borrowing availability under its senior credit facility of
    approximately $54.0 million, and our principal U.K. subsidiary, CTI, had
    approximately (Pounds)24.0 million ($39.9 million) of unused borrowing
    availability under its credit facility. See "Description of Certain
    Indebtedness".     
   
(c) Our issuance of (1) approximately 15.6 million shares of common stock in
    connection with the formation of the Bell Atlantic joint venture, (2)
    approximately 9.1 million shares of common stock in connection with the
    proposed BellSouth transaction and (3) approximately    million shares of
    common stock pursuant to [E] this [D] the equity offering will give TdF the
    right to purchase up to approximately (1) 5.42 million shares of common
    stock at approximately $12.65 per share, (2)    million shares of common
    stock at approximately $   per share and (3)   million shares of common
    stock at a price equal to the public offering price less the underwriting
    discount, in each case pursuant to TdF's antidilutive right under the
    governance agreement. See "Certain Relationships and Related Transactions--
    Agreements with TdF Related to the Roll-Up--Governance Agreement".     
 
                                       34
<PAGE>
 
        UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
   
    The following unaudited pro forma condensed consolidated financial
statements are based on the historical financial statements of CCIC and the
historical financial statements of the entities acquired by CCIC during the
period presented, adjusted to give effect to the following transactions
(collectively, the "Transactions"):     
 
    (1) the Roll-Up;
     
    (2) CCIC's initial public offering in August 1998 (the "IPO");     
 
    (3) the conversion of CCIC's senior convertible preferred stock into
  common stock (all of which, as of July 17, 1998, had been converted);
     
    (4) the issuance of CCIC's 12 3/4% Exchangeable Preferred Stock due 2010
  in December 1998;     
 
    (5) the debt and equity offerings;
     
    (6) the Bell Atlantic joint venture;     
     
    (7) the proposed BellSouth transaction; and     
     
    (8) the proposed Powertel acquisition.     
   
    In this pro forma discussion, we refer to the transactions set forth in
clauses (1) through (4) of the preceding sentence collectively as the 1998
Transactions, and we refer to the Bell Atlantic joint venture, the proposed
BellSouth transaction and the proposed Powertel acquisition collectively as the
1999 Transactions. We refer to all of the above transactions as the
Transactions.     
   
    The Unaudited Pro Forma Condensed Consolidated Statement of Operations for
the year ended December 31, 1998 gives effect to the Transactions as if they
had occurred as of January 1, 1998. The Unaudited Pro Forma Condensed
Consolidated Balance Sheet gives effect to the (1) debt and equity offerings
and (2) the 1999 Transactions as if they had occurred as of December 31, 1998.
The pro forma adjustments are described in the accompanying notes and are based
upon available information and certain assumptions that management believes are
reasonable.     
   
    [D] Included in the notes accompanying the pro forma financial statements
are tables summarizing the unaudited pro forma results of operations and
balance sheet for CCIC and its Restricted Subsidiaries (as defined in the
Indenture governing the 10 5/8% discount notes, the "10 5/8% Notes Indenture");
such group of companies is hereinafter referred to as the "Restricted Group".
The Restricted Group excludes CTI and the Bell Atlantic joint venture, both of
which are designated as Unrestricted Subsidiaries (as defined in the 10 5/8%
Notes Indenture) under our debt instruments.     
   
    The pro forma financial statements do not purport to represent what CCIC's
results of operations or financial condition would actually have been had the
1998 Transactions, the debt and equity offerings or the 1999 Transactions in
fact occurred on such dates or to project CCIC's results of operations or
financial condition for any future date or period. The pro forma financial
statements should be read in conjunction with the consolidated financial
statements and the notes thereto included elsewhere in this document and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations".     
   
    The Roll-Up, the Bell Atlantic joint venture and the proposed Powertel
acquisition are accounted for under the purchase method of accounting. The
total purchase price for the Roll-Up, the Bell Atlantic joint venture and the
proposed Powertel acquisition have been allocated to the identifiable tangible
and intangible assets and liabilities of the applicable acquired business based
upon CCIC's preliminary estimate of their fair values with the remainder
allocated to goodwill and other intangible assets. The allocations of the
purchase prices are subject to revision when additional information concerning
asset and liability valuations is obtained; however, we do not expect that any
such revisions will have a material effect on our consolidated financial
position or results of operations. We have recorded the purchase price for the
Roll-Up based on (1) the number of shares of our common stock and Class A
common stock exchanged for shares of CTI's capital stock and (2) the price per
share received by us in our IPO.     
 
                                       35
<PAGE>
 
      UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
 
                         Year Ended December 31, 1998
               (Dollars in thousands, except per share amounts)
 
<TABLE>   
<CAPTION>
                                                                                     Pro Forma   Historical
                                                                                      for 1998      Bell
                                         Adjustments     Pro Forma   Adjustments    Transactions  Atlantic  Adjustments
                   Historical Historical   for 1998       for 1998       for            and        Joint     for Joint
                    CCIC(a)     CTI(b)   Transactions   Transactions  Offerings      Offerings   Venture(j)   Venture
                   ---------- ---------- ------------   ------------ -----------    ------------ ---------- -----------
<S>                <C>        <C>        <C>            <C>          <C>            <C>          <C>        <C>
Net revenues:
 Site rental and
 broadcast
 transmission....   $ 75,028   $84,714     $    --        $159,742    $    --        $ 159,742    $ 11,183    $31,009(k)
 Network services
 and other.......     38,050    12,514         (265)(c)     50,299         --           50,299         --         --
                    --------   -------     --------       --------    --------       ---------    --------    -------
 Total net
 revenues........    113,078    97,228         (265)       210,041         --          210,041      11,183     31,009
                    --------   -------     --------       --------    --------       ---------    --------    -------
Operating
 expenses:
 Costs of
 operations:
 Site rental and
 broadcast
 transmission....     26,254    35,901          --          62,155         --           62,155      14,941        -- (l)
 Network services
 and other.......     21,564     7,916          --          29,480         --           29,480         --         --
 General and
 administrative..     23,571     5,265         (265)(c)     28,571         --           28,571         --         -- (l)
 Corporate
 development.....      4,625         8          --           4,633         --            4,633         --         --
 Non-cash
 compensation
 charges.........     12,758     3,831          --          16,589         --           16,589         --         --
 Depreciation and
 amortization....     37,239    25,684       11,463 (d)     74,386         --           74,386       6,278     23,346 (m)
                    --------   -------     --------       --------    --------       ---------    --------    -------
                     126,011    78,605       11,198        215,814         --          215,814      21,219     23,346
                    --------   -------     --------       --------    --------       ---------    --------    -------
Operating income
 (loss)..........    (12,933)   18,623      (11,463)        (5,773)        --           (5,773)    (10,036)     7,663
Other income
 (expense):
 Equity in
 earnings of
 unconsolidated
 affiliate.......      2,055       --        (2,055)(e)        --          --              --          --         --
 Interest and
 other income
 (expense).......      4,220       725          --           4,945         --            4,945         --         --
 Interest expense
 and amortization
 of deferred
 financing
 costs...........    (29,089)  (13,378)       3,689 (f)    (38,778)    (32,570)(i)     (71,348)        --     (17,711)(n)
                    --------   -------     --------       --------    --------       ---------    --------    -------
Income (loss)
 before income
 taxes and
 minority
 interests.......    (35,747)    5,970       (9,829)       (39,606)    (32,570)        (72,176)    (10,036)   (10,048)
Provision for
 income taxes....       (374)      --           --            (374)        --             (374)        --         --
Minority
 interests.......     (1,654)      --        (1,194)(g)     (2,848)        --           (2,848)        --       4,155 (o)
                    --------   -------     --------       --------    --------       ---------    --------    -------
Net income
 (loss)..........    (37,775)    5,970      (11,023)       (42,828)    (32,570)        (75,398)    (10,036)    (5,893)
Dividends on
 preferred
 stock...........     (5,411)      --       (21,334)(h)    (26,745)        --          (26,745)        --         --
                    --------   -------     --------       --------    --------       ---------    --------    -------
Net income (loss)
 after deduction
 of dividends on
 preferred
 stock...........   $(43,186)  $ 5,970     $(32,357)      $(69,573)   $(32,570)      $(102,143)   $(10,036)   $(5,893)
                    ========   =======     ========       ========    ========       =========    ========    =======
Loss per common
 share--basic and
 diluted ........   $  (1.02)                             $  (0.74)                  $
                    ========                              ========                   =========
Common shares
 outstanding--
 basic and
 diluted (in
 thousands)......     42,518                                94,064
                    ========                              ========                   =========
<CAPTION>
                     Pro Forma
                     for 1998    Adjustments                 Adjustments
                   Transactions,     for                         for
                     Offerings    Proposed                    Proposed      Pro Forma
                     and Joint    BellSouth      Historical   Powertel       for the
                      Venture    Transaction     Powertel(s) Acquisition   Transactions
                   ------------- --------------- ----------- ------------- ------------
<S>                <C>           <C>             <C>         <C>           <C>
Net revenues:
 Site rental and
 broadcast
 transmission....    $ 201,934     $33,840(p)     $  1,865     $14,040(t)   $ 251,679
 Network services
 and other.......       50,299         --              --          --          50,299
                   ------------- --------------- ----------- ------------- ------------
 Total net
 revenues........      252,233      33,840           1,865      14,040        301,978
                   ------------- --------------- ----------- ------------- ------------
Operating
 expenses:
 Costs of
 operations:
 Site rental and
 broadcast
 transmission....       77,096      11,400(l)(q)     6,167         -- (l)      94,663
 Network services
 and other.......       29,480         --              --          --          29,480
 General and
 administrative..       28,571         -- (l)          --          -- (l)      28,571
 Corporate
 development.....        4,633         --              --          --           4,633
 Non-cash
 compensation
 charges.........       16,589         --              --          --          16,589
 Depreciation and
 amortization....      104,010      30,500 (r)       7,534       6,111 (u)    148,155
                   ------------- --------------- ----------- ------------- ------------
                       260,379      41,900          13,701       6,111        322,091
                   ------------- --------------- ----------- ------------- ------------
Operating income
 (loss)..........       (8,146)     (8,060)        (11,836)      7,929        (20,113)
Other income
 (expense):
 Equity in
 earnings of
 unconsolidated
 affiliate.......          --          --              --          --             --
 Interest and
 other income
 (expense).......        4,945         --              --          --           4,945
 Interest expense
 and amortization
 of deferred
 financing
 costs...........      (89,059)        --              --          --         (89,059)
                   ------------- --------------- ----------- ------------- ------------
Income (loss)
 before income
 taxes and
 minority
 interests.......      (92,260)     (8,060)        (11,836)      7,929       (104,227)
Provision for
 income taxes....         (374)        --              --          --            (374)
Minority
 interests.......        1,307         --              --          --           1,307
                   ------------- --------------- ----------- ------------- ------------
Net income
 (loss)..........      (91,327)     (8,060)        (11,836)      7,929       (103,294)
Dividends on
 preferred
 stock...........      (26,745)        --              --          --         (26,745)
                   ------------- --------------- ----------- ------------- ------------
Net income (loss)
 after deduction
 of dividends on
 preferred
 stock...........    $(118,072)    $(8,060)       $(11,836)    $ 7,929      $(130,039)
                   ============= =============== =========== ============= ============
Loss per common
 share--basic and
 diluted ........    $                                                      $
                   =============                                           ============
Common shares
 outstanding--
 basic and
 diluted (in
 thousands)......
                   =============                                           ============
</TABLE>    
 
      See Notes to Unaudited Pro Forma Condensed Consolidated Statement of
                                  Operations
 
                                       36
<PAGE>
 
  Notes to Unaudited Pro Forma Condensed Consolidated Statement of Operations
                             (Dollars in thousands)
 
(a) The historical results of operations for CTI are included in CCIC's
    historical results of operations for the period from the date of the Roll-
    Up, August 21, 1998, through December 31, 1998.
 
(b) Reflects the historical results of operations of CTI (under U.S. GAAP) for
    the periods prior to the consummation of the Roll-Up on August 21, 1998.
    Such results have been translated from pounds sterling to U.S. dollars at
    the average Noon Buying Rate for the period.
 
(c) Reflects the elimination of management fees payable to CCIC from CTI.
 
(d) Reflects the incremental amortization of goodwill as a result of the Roll-
    Up. Goodwill is being amortized over twenty years.
 
(e) Reflects the elimination of equity accounting adjustments to include CCIC's
    percentage in CTI's earnings and losses.
 
(f) Reflects decrease in interest expense attributable to the repayment of
    borrowings under CCIC's senior credit facility from a portion of the net
    proceeds from the issuance of our 12 3/4% exchangeable preferred stock.
 
(g) Reflects the minority interest in dividends accrued on CTI's Redeemable
    Preference Shares.
 
(h) Reflects (1) decrease in dividends of $4,348 attributable to the conversion
    of the outstanding shares of senior convertible preferred stock into shares
    of common stock and (2) increase in dividends of $25,682 attributable to 12
    3/4% exchangeable preferred stock.
   
(i) Reflects (1) increase in interest expense of $29,570 as a result of the
    issuance of the notes in the debt offering at an assumed interest rate of
      % per annum and (2) nonrecurring financing fees of $3,000 related to the
    term loans incurred to fund the escrow payments in connection with the
    proposed BellSouth transaction and the proposed Powertel acquisition (the
    "Term Loans").     
   
(j) Reflects the historical results of operations of the tower operations to be
    contributed to the Bell Atlantic joint venture.     
   
(k) Reflects additional revenues to be recognized by the Bell Atlantic joint
    venture pursuant to the global lease and the formation agreement.     
   
(l) We expect that the Bell Atlantic joint venture will incur incremental
    operating expenses as a stand-alone entity. Such incremental expenses are
    currently estimated to amount to approximately $5.2 million per year. In
    addition, we expect that we will incur incremental operating expenses as a
    result of the proposed BellSouth transaction and the proposed Powertel
    acquisition. Such incremental expenses are currently estimated to amount to
    approximately $15.9 million per year. These incremental operating expenses
    are based on management's best estimates rather than any contractual
    obligations; as such, these amounts have not been presented as adjustments
    in the accompanying pro forma financial statement.     
   
(m) Reflects the incremental depreciation of property and equipment as a result
    of the Bell Atlantic joint venture. Property and equipment is being
    depreciated over twenty years.     
   
(n) Reflects additional interest expense attributable to borrowings under a
    credit facility to be entered into by the Bell Atlantic joint venture. Such
    borrowings are initially estimated to incur interest at a rate of 9.25% per
    annum.     
   
(o) Reflects the minority partner's 38.5% interest in the joint venture's
    operations.     
   
(p) Reflects additional revenues to be recognized by CCIC in connection with
    the proposed BellSouth transaction pursuant to the sublease of tower space
    by BellSouth. This amount includes $26,640 in revenues to be received from
    BellSouth and $7,200 in revenues to be received from other tenants.     
   
(q) Reflects additional costs to be incurred for ground rents in connection
    with the proposed BellSouth transaction pursuant to the preliminary
    agreement.     
   
(r) Reflects the incremental depreciation of property and equipment as a result
    of the proposed BellSouth transaction. Property and equipment is being
    depreciated over twenty years.     
   
(s) Reflects the historical results of operations of the tower operations to be
    acquired in the proposed Powertel acquisition.     
   
(t) Reflects additional revenues to be recognized by CCIC in connection with
    the proposed Powertel acquisition pursuant to the master site agreements.
           
(u) Reflects the incremental depreciation of property and equipment as a result
    of the proposed Powertel acquisition. Property and equipment is being
    depreciated over twenty years.     
 
                                       37
<PAGE>
 
    [D] The following tables summarize the unaudited pro forma results of
operations for the Restricted Group. Such information is not intended as an
alternative measure of the operating results as would be determined in
accordance with generally accepted accounting principles.
 
<TABLE>
<CAPTION>
                                                            Year Ended December 31, 1998
                           -----------------------------------------------------------------------------------------------
                                                                Restricted Adjustments            Adjustments  Restricted
                                                   Exclusion of   Group        for                    for      Group Pro
                           Pro Forma  Exclusion of   Certain    Pro Forma   Proposed               Proposed    Forma for
                              for     Unrestricted Adjustments     for      BellSouth  Historical  Powertel       the
                           Offerings  Subsidiaries for Roll-Up  Offerings  Transaction  Powertel  Acquisition Transactions
                           ---------  ------------ ------------ ---------- ----------- ---------- ----------- ------------
 <S>                       <C>        <C>          <C>          <C>        <C>         <C>        <C>         <C>
 Net revenues:
 Site rental and
  broadcast
  transmission..........   $ 159,742   $(137,201)    $   --      $ 22,541    $33,840    $  1,865    $14,040    $  72,286
 Network services and
  other.................      50,299     (18,082)        --        32,217        --          --         --        32,217
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
  Total net revenues....     210,041    (155,283)        --        54,758     33,840       1,865     14,040      104,503
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
 Operating expenses:
 Costs of operations:
  Site rental and
   broadcast
   transmission.........      62,155     (56,038)        --         6,117     11,400       6,167        --        23,684
  Network services and
   other................      29,480     (12,151)        --        17,329        --          --         --        17,329
 General and
  administrative........      28,571      (7,683)        265       21,153        --          --         --        21,153
 Corporate development..       4,633          (8)        --         4,625        --          --         --         4,625
 Non-cash compensation
  charges...............      16,589      (6,682)        --         9,907        --          --         --         9,907
 Depreciation and
  amortization..........      74,386     (46,002)    (11,463)      16,921     30,500       7,534      6,111       61,066
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
                             215,814    (128,564)    (11,198)      76,052     41,900      13,701      6,111      137,764
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
 Operating income
  (loss)................      (5,773)    (26,719)     11,198      (21,294)    (8,060)    (11,836)     7,929      (33,261)
 Other income (expense):
 Interest and other
  income (expense)......       4,945      (3,844)        --         1,101        --          --         --         1,101
 Interest expense and
  amortization of
  deferred financing
  costs.................     (71,348)     20,740         --       (50,608)       --          --         --       (50,608)
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
 Income (loss) before
  income taxes and
  minority interests....     (72,176)     (9,823)     11,198      (70,801)    (8,060)    (11,836)     7,929      (82,768)
 Provision for income
  taxes.................        (374)        --          --          (374)       --          --         --          (374)
 Minority interests.....      (2,848)      1,654       1,194          --         --          --         --           --
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
 Net income (loss)......     (75,398)     (8,169)     12,392      (71,175)    (8,060)    (11,836)     7,929      (83,142)
 Dividends on preferred
  stock.................     (26,745)        --          --       (26,745)       --          --         --       (26,745)
                           ---------   ---------     -------     --------    -------    --------    -------    ---------
 Net income (loss) after
  deduction of dividends
  on preferred stock....   $(102,143)  $  (8,169)    $12,392     $(97,920)   $(8,060)   $(11,836)   $ 7,929    $(109,887)
                           =========   =========     =======     ========    =======    ========    =======    =========
</TABLE>
 
                                       38
<PAGE>
 
            UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
 
                            As of December 31, 1998
                             (Dollars in thousands)
 
<TABLE>   
<CAPTION>
                                                                                     Pro Forma  Adjustments
                                                         Historical                     for         for
                               Adjustments   Pro Forma  Bell Atlantic Adjustments    Offerings   Proposed
                    Historical     for          for         Joint      for Joint     and Joint   BellSouth     Historical
                       CCIC     Offerings    Offerings   Venture(e)     Venture       Venture   Transaction    Powertel(o)
                    ---------- -----------   ---------- ------------- -----------    ---------- -----------    -----------
 <S>                <C>        <C>           <C>        <C>           <C>            <C>        <C>            <C>
 Assets:
 Current assets:
 Cash and cash
  equivalents.....  $  296,450  $666,125(a)  $  962,575    $   --      $(208,375)(f) $  754,200  $(430,000)(l)  $    --
 Receivables......      36,420       --          36,420        --            --          36,420        --            --
 Inventories......       6,599       --           6,599        --            --           6,599        --            --
 Prepaid expenses
  and other
  current assets..       2,647       --           2,647        --            --           2,647        --          2,031
                    ----------  --------     ----------    -------     ---------     ----------  ---------      --------
  Total current
   assets.........     342,116   666,125      1,008,241        --       (208,375)       799,866   (430,000)        2,031
 Property and
  equipment, net..     592,594       --         592,594     83,557       508,923 (g)  1,185,074    610,000 (m)   121,490
 Investments in
  affiliates......       2,258       --           2,258        --            --           2,258        --            --
 Goodwill and
  other intangible
  assets, net.....     569,740       --         569,740        --            --         569,740        --            --
 Deferred
  financing costs
  and other
  assets, net.....      16,522    10,875(b)      27,397        --          4,625 (h)     32,022        --            --
                    ----------  --------     ----------    -------     ---------     ----------  ---------      --------
                    $1,523,230  $677,000     $2,200,230    $83,557      $305,173     $2,588,960   $180,000      $123,521
                    ==========  ========     ==========    =======     =========     ==========  =========      ========
 Liabilities and
  Stockholders'
  Equity:
 Current
  liabilities:
 Accounts
  payable.........  $   46,020  $    --        $ 46,020    $   --      $     --         $46,020  $     --       $    --
 Other current
  liabilities.....      46,867       --          46,867        --            --          46,867        --            309
 Long-term debt,
  current
  maturities......         --        --             --         --            --             --         --            --
                    ----------  --------     ----------    -------     ---------     ----------  ---------      --------
  Total current
   liabilities....      92,887       --          92,887        --            --          92,887        --            309
 Long-term debt,
  less current
  maturities......     429,710   300,000(c)     729,710        --        180,000 (i)    909,710        --            --
 Other
  liabilities.....      22,823       --          22,823        --            --          22,823        --            --
                    ----------  --------     ----------    -------     ---------     ----------  ---------      --------
  Total
   liabilities....     545,420   300,000        845,420        --        180,000      1,025,420        --            309
                    ----------  --------     ----------    -------     ---------     ----------  ---------      --------
 Minority
  interests.......      39,185       --          39,185        --         11,730 (j)     50,915        --            --
 Redeemable
  preferred
  stock...........     201,063       --         201,063        --            --         201,063        --            --
 Stockholders'
  equity..........     737,562   377,000(d)   1,114,562     83,557       113,443 (k)  1,311,562    180,000 (n)   123,212
                    ----------  --------     ----------    -------     ---------     ----------  ---------      --------
                    $1,523,230  $677,000     $2,200,230    $83,557      $305,173     $2,588,960  $ 180,000      $123,521
                    ==========  ========     ==========    =======     =========     ==========  =========      ========
<CAPTION>
                    Adjustments
                        for
                     Proposed       Pro Forma
                     Powertel        for the
                    Acquisition    Transactions
                    -------------- ------------
 <S>                <C>            <C>
 Assets:
 Current assets:
 Cash and cash
  equivalents.....   $(274,617)(p)  $   49,583
 Receivables......         --           36,420
 Inventories......         --            6,599
 Prepaid expenses
  and other
  current assets..         --            4,678
                    -------------- ------------
  Total current
   assets.........    (274,617)         97,280
 Property and
  equipment, net..     151,405 (q)   2,067,969
 Investments in
  affiliates......         --            2,258
 Goodwill and
  other intangible
  assets, net.....         --          569,740
 Deferred
  financing costs
  and other
  assets, net.....         --           32,022
                    -------------- ------------
                     $(123,212)     $2,769,269
                    ============== ============
 Liabilities and
  Stockholders'
  Equity:
 Current
  liabilities:
 Accounts
  payable.........   $     --       $   46,020
 Other current
  liabilities.....         --           47,176
 Long-term debt,
  current
  maturities......         --              --
                    -------------- ------------
  Total current
   liabilities....         --           93,196
 Long-term debt,
  less current
  maturities......         --          909,710
 Other
  liabilities.....         --           22,823
                    -------------- ------------
  Total
   liabilities....         --        1,025,729
                    -------------- ------------
 Minority
  interests.......         --           50,915
 Redeemable
  preferred
  stock...........         --          201,063
 Stockholders'
  equity..........    (123,212)(r)   1,491,562
                    -------------- ------------
                     $(123,212)     $2,769,269
                    ============== ============
</TABLE>    
 
     See Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet
 
                                       39
<PAGE>
 
       Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet
                             (Dollars in thousands)
 
<TABLE>   
 <C> <C> <S>                                                         <C>
 (a) Reflects the following adjustments to cash and cash
     equivalents:
     (1) Increase resulting from the receipt of proceeds from the
         offerings................................................   $ 700,000
     (2) Decrease resulting from the payment of underwriting
         discounts and commissions and other fees and expenses
         related to the offerings.................................     (30,875)
     (3) Decrease resulting from the payment of nonrecurring
         financing fees related to the Term Loans.................      (3,000)
                                                                     ---------
         Total adjustments to cash and cash equivalents...........   $ 666,125
                                                                     =========
 (b) Reflects deferred financing costs resulting from the payment
     of underwriting discounts and commissions and other fees and
     expenses related to the debt offering.
 (c) Reflects the increase resulting from the receipt of proceeds
     from the debt offering.
 (d) Reflects the following adjustments to stockholders' equity:
     (1) Increase resulting from the receipt of proceeds from the
         equity offering..........................................   $ 400,000
     (2) Decrease resulting from the payment of underwriting
         discounts and commissions and other fees and expenses
         related to the equity offering...........................     (20,000)
     (3) Decrease resulting from payment of nonrecurring financing
         fees related to the Term Loans...........................      (3,000)
                                                                     ---------
         Total adjustments to stockholders' equity................   $ 377,000
                                                                     =========
 (e) Reflects the historical amounts from the statement of net
     assets for the tower operations to be contributed to the Bell
     Atlantic joint venture.
 (f) Reflects the following adjustments to cash and cash
     equivalents:
     (1) Increase resulting from borrowings under a credit
         facility to be entered into by the Bell Atlantic joint
         venture..................................................   $ 180,000
     (2) Decrease resulting from distribution to minority
         partner..................................................    (380,000)
     (3) Decrease resulting from payment of deferred financing
         costs for a credit facility to be entered into by the
         Bell Atlantic joint venture..............................      (4,625)
     (4) Decrease resulting from payment of fees and expenses
         related to the Bell Atlantic joint venture...............      (3,750)
                                                                     ---------
         Total adjustments to cash and cash equivalents...........   $(208,375)
                                                                     =========
 (g) Reflects the increase in basis of property and equipment
     contributed to the Bell Atlantic joint venture by the minority
     partner.
 (h) Reflects the deferred financing costs for the credit facility
     to be entered into by the Bell Atlantic joint venture.
 (i) Reflects the borrowings under a credit facility to be entered
     into by the Bell Atlantic joint venture.
 (j) Reflects the 38.5% minority interest in the Bell Atlantic
     joint venture.
 (k) Reflects the following adjustments to stockholders' equity:
     (1) Increase resulting from increase in basis of property and
         equipment contributed to the Bell Atlantic joint venture
         by the minority partner..................................   $ 508,923
     (2) Decrease resulting from distribution to minority
         partner..................................................    (380,000)
     (3) Decrease resulting from minority interest................     (11,730)
     (4) Decrease resulting from payment of fees and expenses
         related to the Bell Atlantic joint venture...............      (3,750)
                                                                     ---------
         Total adjustments to stockholders' equity................   $ 113,443
                                                                     =========
 (l) Reflects the payment of the cash portion of the purchase price
     for the proposed BellSouth transaction.
 (m) Reflects the basis of property and equipment recorded in
     connection with the proposed BellSouth transaction.
 (n) Reflects the increase resulting from the issuance of common
     stock for a portion of the purchase price for the proposed
     BellSouth transaction.
 (o) Reflects the historical amounts from the statement of net
     assets for the tower operations to be acquired in the proposed
     Powertel acquisition.
 (p) Reflects the payment of the closing price for the proposed
     Powertel acquisition.
 (q) Reflects the increase in basis of property and equipment
     acquired in the proposed Powertel acquisition.
 (r) Reflects the elimination of the historical basis of the net
     assets acquired in the proposed Powertel acquisition.
</TABLE>    
 
    The following table summarizes the adjustments for the offerings, with
increases to liabilities and stockholders' equity balances shown as negative
amounts:
<TABLE>
<CAPTION>
                                           Adjustment Reference
                             -------------------------------------------------
                             (a)(1),(c),(d)(1) (a)(2),(b),(d)(2) (a)(3),(d)(3)  Totals
                             ----------------- ----------------- ------------- ---------
   <S>                       <C>               <C>               <C>           <C>
   Cash and cash equiva-
    lents..................      $ 700,000         $(30,875)        $(3,000)   $ 666,125
   Deferred financing cost
    and other assets, net..            --            10,875             --        10,875
   Long-term debt, less
    current maturities.....       (300,000)             --              --      (300,000)
   Stockholders' equity....       (400,000)          20,000           3,000     (377,000)
                                 ---------         --------         -------    ---------
                                 $     --          $    --          $   --     $     --
                                 =========         ========         =======    =========
</TABLE>
 
                                       40
<PAGE>
 
   
   The following table summarizes the adjustments for the Bell Atlantic joint
venture, with increases to liabilities and stockholders' equity balances shown
as negative amounts:     
 
<TABLE>
<CAPTION>
                                                      Adjustment Reference
                             ------------------------------------------------------------------------
                             (f)(1),(i)  (f)(2),(k)(2) (f)(3),(h) (f)(4),(k)(4) (g),(j),(k)(1),(k)(3)  Totals
                             ----------  ------------- ---------- ------------- --------------------- ---------
   <S>                       <C>         <C>           <C>        <C>           <C>                   <C>
   Cash and cash equiva-
    lents..................  $ 180,000     $(380,000)   $(4,625)     $(3,750)         $     --        $(208,375)
   Property and equipment,
    net....................        --            --         --           --             508,923         508,923
   Deferred financing costs
    and other assets, net..        --            --       4,625          --                 --            4,625
   Long-term debt, less
    current maturities.....   (180,000)          --         --           --                 --         (180,000)
   Minority interests......        --            --         --           --             (11,730)        (11,730)
   Stockholders' equity....        --        380,000        --         3,750           (497,193)       (113,443)
                             ---------     ---------    -------      -------          ---------       ---------
                             $     --      $     --     $   --       $   --           $     --        $     --
                             =========     =========    =======      =======          =========       =========
</TABLE>
   
   The following table summarizes the adjustments for the proposed BellSouth
transaction, with increases to liabilities and stockholders' equity balances
shown as negative amounts:     
 
<TABLE>
<CAPTION>
                                                            Adjustment Reference
                                                            --------------------
                                                                (l),(m),(n)
                                                            --------------------
   <S>                                                      <C>
   Cash and cash equivalents...............................      $(430,000)
   Property and equipment, net.............................        610,000
   Stockholders' equity....................................       (180,000)
                                                                 ---------
                                                                 $     --
                                                                 =========
</TABLE>
   
   The following table summarizes the adjustments for the proposed Powertel
acquisition, with increases to liabilities and stockholders' equity balances
shown as negative amounts:     
 
<TABLE>
<CAPTION>
                                                            Adjustment Reference
                                                            --------------------
                                                                (p),(q),(r)
                                                            --------------------
   <S>                                                      <C>
   Cash and cash equivalents...............................      $(274,617)
   Property and equipment, net.............................        151,405
   Stockholders' equity....................................        123,212
                                                                 ---------
                                                                 $     --
                                                                 =========
</TABLE>
 
   [D] The following table summarizes the unaudited pro forma balance sheet for
the Restricted Group. Such information is not intended as an alternative
measure of financial position as determined in accordance with generally
accepted accounting principles.
 
<TABLE>   
<CAPTION>
                                                               As of December 31, 1998
                     ------------------------------------------------------------------------------------------------------------
                                                                      Restricted
                                                                        Group
                                                                      Pro Forma
                                             Restricted                  for     Adjustments                          Restricted
                                               Group     Adjustments  Offerings      for                Adjustments     Group
                        Pro     Exclusion of    Pro          for         and      Proposed              for Proposed  Pro Forma
                     Forma for  Unrestricted Forma for  Bell Atlantic   Joint     BellSouth  Historical   Powertel     for the
                     Offerings  Subsidiaries Offerings  Joint Venture  Venture   Transaction  Powertel  Acquisition  Transactions
                     ---------- ------------ ---------- ------------- ---------- ----------- ---------- ------------ ------------
<S>                  <C>        <C>          <C>        <C>           <C>        <C>         <C>        <C>          <C>
Assets:
Current assets:
 Cash and cash
  equivalents......  $  962,575  $(254,665)  $  707,910   $    --     $  707,910  $(430,000)  $    --    $(274,617)   $    3,293
 Receivables.......      36,420    (18,733)      17,687        --         17,687        --         --          --         17,687
 Inventories.......       6,599     (5,309)       1,290        --          1,290        --         --          --          1,290
 Prepaid expenses
  and other
  current assets...       2,647     (2,039)         608        --            608        --       2,031         --          2,639
                     ----------  ---------   ----------   --------    ----------  ---------   --------   ---------    ----------
   Total current
    assets.........   1,008,241   (280,746)     727,495        --        727,495   (430,000)     2,031    (274,617)       24,909
Property and
 equipment, net....     592,594   (427,389)     165,205        --        165,205    610,000    121,490     151,405     1,048,100
Investments in
 affiliates........       2,258        --         2,258        --          2,258        --         --          --          2,258
Investments in
 Unrestricted
 Subsidiaries......         --     744,941      744,941    197,000       941,941        --         --          --        941,941
Goodwill and other
 intangible assets,
 net...............     569,740   (426,011)     143,729        --        143,729        --         --          --        143,729
Deferred financing
 costs and other
 assets, net.......      27,397     (3,340)      24,057        --         24,057        --         --          --         24,057
                     ----------  ---------   ----------   --------    ----------  ---------   --------   ---------    ----------
                     $2,200,230  $(392,545)  $1,807,685   $197,000    $2,004,685  $ 180,000   $123,521   $(123,212)   $2,184,994
                     ==========  =========   ==========   ========    ==========  =========   ========   =========    ==========
Liabilities and
 Stockholders'
 Equity:
Current
 liabilities:
 Accounts
  payable..........  $   46,020  $ (34,648)     $11,372   $    --        $11,372  $     --    $    --    $     --     $   11,372
 Other current
  liabilities......      46,867    (40,586)       6,281        --          6,281        --         309         --          6,590
 Long-term debt,
  current
  maturities.......         --         --           --         --            --         --         --          --            --
                     ----------  ---------   ----------   --------    ----------  ---------   --------   ---------    ----------
   Total current
    liabilities....      92,887    (75,234)      17,653        --         17,653        --         309         --         17,962
Long-term debt,
 less current
 maturities........     729,710   (256,111)     473,599        --        473,599        --         --          --        473,599
Other liabilities..      22,823    (22,015)         808        --            808        --         --          --            808
                     ----------  ---------   ----------   --------    ----------  ---------   --------   ---------    ----------
 Total
  liabilities......     845,420   (353,360)     492,060        --        492,060        --         309         --        492,369
                     ----------  ---------   ----------   --------    ----------  ---------   --------   ---------    ----------
Minority
 interests.........      39,185    (39,185)         --         --            --         --         --          --            --
Redeemable
 preferred stock...     201,063        --       201,063        --        201,063        --         --          --        201,063
Stockholders'
 equity............   1,114,562        --     1,114,562    197,000     1,311,562    180,000    123,212    (123,212)    1,491,562
                     ----------  ---------   ----------   --------    ----------  ---------   --------   ---------    ----------
                     $2,200,230  $(392,545)  $1,807,685   $197,000    $2,004,685  $ 180,000   $123,521   $(123,212)   $2,184,994
                     ==========  =========   ==========   ========    ==========  =========   ========   =========    ==========
</TABLE>    
 
                                       41
<PAGE>
 
                   SELECTED FINANCIAL AND OTHER DATA OF CCIC
   
    The selected historical consolidated financial and other data for CCIC set
forth below for each of the four years in the period ended December 31, 1998,
and as of December 31, 1995, 1996, 1997 and 1998, have been derived from the
consolidated financial statements of CCIC, which have been audited by KPMG LLP,
independent certified public accountants. The results of operations for the
year ended December 31, 1998 are not comparable to the year ended December 31,
1997, and the results for the year ended December 31, 1997 are not comparable
to the year ended December 31, 1996 as a result of business acquisitions
consummated in 1997 and 1998. Results of operations of these acquired
businesses are included in CCIC's consolidated financial statements for the
periods subsequent to the respective dates of acquisition. [[D] The selected
historical financial and other data for the Restricted Group (as defined) are
not intended as alternative measures of operating results or cash flows from
operations (as determined in accordance with generally accepted accounting
principles).] The information set forth below should be read in conjunction
with "Management's Discussion and Analysis of Financial Condition and Results
of Operations--Results of Operations--CCIC" and the consolidated financial
statements and the notes thereto of CCIC included elsewhere in this document.
    
<TABLE>
<CAPTION>
                                            Years Ended December 31,
                                     -----------------------------------------
                                       1995      1996      1997        1998
                                     --------  --------  ---------  ----------
                                             (Dollars in thousands)
<S>                                  <C>       <C>       <C>        <C>
Statement of Operations Data:
Net revenues:
 Site rental and broadcast
  transmission.....................  $  4,052  $  5,615  $  11,010  $   75,028
 Network services and other........         6       592     20,395      38,050
                                     --------  --------  ---------  ----------
   Total net revenues..............     4,058     6,207     31,405     113,078
                                     --------  --------  ---------  ----------
Costs of operations:
 Site rental and broadcast
  transmission.....................     1,226     1,292      2,213      26,254
 Network services and other........       --          8     13,137      21,564
                                     --------  --------  ---------  ----------
   Total costs of operations.......     1,226     1,300     15,350      47,818
                                     --------  --------  ---------  ----------
General and administrative.........       729     1,678      6,824      23,571
Corporate development(a)...........       204     1,324      5,731       4,625
Non-cash compensation charges(b)...       --        --         --       12,758
Depreciation and amortization......       836     1,242      6,952      37,239
                                     --------  --------  ---------  ----------
Operating income (loss)............     1,063       663     (3,452)    (12,933)
Equity in earnings (losses) of
 unconsolidated affiliate..........       --        --      (1,138)      2,055
Interest and other income
 (expense)(c)......................        53       193      1,951       4,220
Interest expense and amortization
 of deferred financing costs.......    (1,137)   (1,803)    (9,254)    (29,089)
                                     --------  --------  ---------  ----------
Loss before income taxes and
 minority interests................       (21)     (947)   (11,893)    (35,747)
Provision for income taxes.........       --        (10)       (49)       (374)
Minority interests.................       --        --         --       (1,654)
                                     --------  --------  ---------  ----------
Net loss...........................       (21)     (957)   (11,942)    (37,775)
Dividends on preferred stock.......       --        --      (2,199)     (5,411)
                                     --------  --------  ---------  ----------
Net loss after deduction of
 dividends on preferred stock......  $    (21) $   (957) $ (14,141) $  (43,186)
                                     ========  ========  =========  ==========
Loss per common share--basic and
 diluted...........................  $  (0.01) $  (0.27) $   (2.27) $    (1.02)
                                     ========  ========  =========  ==========
Common shares outstanding--basic
 and diluted (in thousands)........     3,316     3,503      6,238      42,518
                                     ========  ========  =========  ==========
Other Data:
Site data (at period end)(d):
Towers owned.......................       126       155        240       1,344
Towers managed.....................         7         7        133         129
Rooftop sites managed (revenue
 producing)(e).....................        41        52         80         135
                                     --------  --------  ---------  ----------
Total sites owned and managed......       174       214        453       1,608
                                     ========  ========  =========  ==========
EBITDA(f)..........................  $  1,899  $  1,905  $   3,500  $   37,064
[D] Restricted Group EBITDA........     1,899     1,905      3,500       5,799
Capital expenditures...............       161       890     18,035     138,759
Summary cash flow information:
 Net cash provided by (used for)
  operating activities.............     1,672      (530)      (624)     44,976
 Net cash used for investing
  activities.......................   (16,673)  (13,916)  (111,484)   (149,248)
 Net cash provided by financing
  activities.......................    15,597    21,193    159,843     345,248
Ratio of earnings to fixed
 charges(g)........................       --        --         --          --
Balance Sheet Data (at period end):
Cash and cash equivalents..........  $    596  $  7,343  $  55,078  $  296,450
Property and equipment, net........    16,003    26,753     81,968     592,594
Total assets.......................    19,875    41,226    371,391   1,523,230
Total debt.........................    11,182    22,052    156,293     429,710
Redeemable preferred stock(h)......     5,175    15,550    160,749     201,063
Total stockholders' equity
 (deficit).........................       619      (210)    41,792     737,562
</TABLE>
 
                                       42
<PAGE>
 
- --------
   
(a) Corporate development expenses represent costs incurred in connection with
    acquisitions and development of new business initiatives. These expenses
    consist primarily of allocated compensation, benefits and overhead costs
    that are not directly related to the administration or management of
    existing towers. For the year ended December 31, 1997, such expenses
    include (1) nonrecurring cash bonuses of $0.9 million paid to certain
    executive officers in connection with our initial investment in Castle
    Transmission, our U.K. subsidiary, and (2) a nonrecurring cash charge of
    $1.3 million related to the purchase by CCIC of shares of common stock from
    CCIC's former chief executive officer in connection with the Castle
    Transmission investment. See "Certain Relationships and Related
    Transactions".     
(b) Represents charges related to the issuance of stock options to certain
    employees and executives.
   
(c) Includes a $1.2 million fee received in March 1997 as compensation for
    leading the investment consortium which provided the equity financing in
    connection with the Castle Transmission investment.     
(d) Represents the aggregate number of sites of CCIC as of the end of each
    period.
   
(e) As of December 31, 1998, we had contracts with 1,365 buildings in the
    United States to manage on behalf of such buildings the leasing of space
    for antennas on the rooftops of such buildings. A revenue producing rooftop
    represents a rooftop where we have arranged a lease of space on such
    rooftop and, as such, are receiving payments in respect of our management
    contract. We generally do not receive any payment for rooftops under
    management unless we actually lease space on such rooftops to third
    parties. As of December 31, 1998, we had 1,284 rooftop sites under
    management throughout the United States that were not revenue producing but
    were available for leasing to customers and, in the United Kingdom, the
    Company had 54 revenue producing rooftop sites that were occupied by our
    transmitters but were not available for leasing to customers.     
   
(f) EBITDA is defined as operating income (loss) plus depreciation and
    amortization and non-cash compensation charges. EBITDA is presented as
    additional information because management believes it to be a useful
    indicator of our ability to meet debt service and capital expenditure
    requirements. It is not, however, intended as an alternative measure of
    operating results or cash flow from operations (as determined in accordance
    with generally accepted accounting principles). Furthermore, our measure of
    EBITDA may not be comparable to similarly titled measures of other
    companies.     
(g) For purposes of computing the ratio of earnings to fixed charges, earnings
    represent income (loss) before income taxes, fixed charges and equity in
    earnings (losses) of unconsolidated affiliate. Fixed charges consist of
    interest expense, the interest component of operating leases and
    amortization of deferred financing costs. For the years ended December 31,
    1995, 1996, 1997 and 1998, earnings were insufficient to cover fixed
    charges by $21,000, $0.9 million, $10.8 million and $37.8 million,
    respectively.
   
(h) The 1995, 1996 and 1997 amounts represent (1) the senior convertible
    preferred stock we privately placed in August 1997 and October 1997, all of
    which has been converted into shares of common stock, and (2) Series A
    convertible preferred stock, Series B convertible preferred stock and the
    Series C convertible preferred stock we privately placed in April 1995,
    July 1996 and February 1997, respectively, all of which has been converted
    into shares of common stock in connection with the consummation of our
    initial public offering in August 1998. The 1998 amount represents our 12
    3/4% senior exchangeable preferred stock.     
 
                               ----------------
 
    The selected quarterly historical consolidated financial data for CCIC set
forth below have been derived from the consolidated financial statements of
CCIC.
 
<TABLE>
<CAPTION>
                                          Three Months Ended
                         ------------------------------------------------------------
                          March 31       June 30       September 30     December 31
                         ------------   ------------  ---------------  --------------
                          (In thousands of dollars, except per share amounts)
<S>                      <C>            <C>           <C>              <C>
1997:
 Net revenues........... $      1,994   $      4,771    $     11,481     $     13,159
 Gross profit(1)........        1,731          2,258           5,648            6,418
 Net loss...............         (443)        (1,706)         (4,001)          (5,792)
 Loss per common share--
  basic and diluted.....        (0.13)         (0.51)          (0.62)           (0.69)
1998:
 Net revenues........... $     11,837   $     11,530    $     28,894     $     60,817
 Gross profit(1)........        6,244          7,550          15,835           35,631
 Net loss...............       (6,606)        (6,426)        (17,444)          (7,299)
 Loss per common share--
  basic and diluted.....        (0.79)         (0.78)          (0.33)           (0.09)
</TABLE>
- --------
(1) Represents net revenues less costs of operations.
 
                                       43
<PAGE>
 
                    SELECTED FINANCIAL AND OTHER DATA OF CTI
   
   The selected historical financial data for CTI, which was 34.3% owned by
CCIC prior to the Roll-Up, presents (1) selected historical financial data of
the BBC Home Service Transmission Business prior to its acquisition by CTI (the
"Predecessor") for the year ended March 31, 1996 and the eleven and two months
ended February 27, 1997, (2) selected historical consolidated financial data of
CTI after such acquisition for the one month ended March 31, 1997 and for the
nine months ended December 31, 1997, and (3) selected historical consolidated
financial data of CTI for the eight months ended August 31, 1998. The selected
historical financial data for the year ended March 31, 1996 and the eleven
months ended February 27, 1997 have been derived from the financial statements
of the Predecessor, which have been audited by KPMG, Chartered Accountants. The
selected financial data for the one month ended March 31, 1997 and the nine
months ended December 31, 1997 have been derived from the consolidated
financial statements of CTI, which have been audited by KPMG, Chartered
Accountants. The selected historical financial data for the two months ended
February 27, 1997 have been derived from the unaudited financial statements of
the Predecessor, and the selected historical financial data for the eight
months ended August 31, 1998 have been derived from the unaudited consolidated
financial statements of CTI, which include all adjustments that CTI considers
necessary for a fair presentation of the financial position and results of
operations for that period. The results of operations for the one month ended
March 31, 1997, the nine months ended December 31, 1997 and the eight months
ended August 31, 1998 are not necessarily indicative of the results of
operations of CTI that may be expected for the entire year. CCIC acquired a
majority ownership interest in CTI upon consummation of the Roll-Up in August
1998 and, as a result, historical financial data of CTI for the year ended
December 31, 1998 is not presented. This information reflects financial data
for CTI as a whole, is not limited to that portion of the financial data
attributable to CCIC's percentage ownership of CTI prior to the Roll-Up and is
not indicative of any distributions or dividends that CCIC might receive in the
future. CTI is subject to significant restrictions on its ability to make
dividends and distributions to CCIC. See "Risk Factors--As a Holding Company,
We Require Dividends from Subsidiaries to Meet Cash Requirements or Pay
Dividends". The information set forth below should be read in conjunction with
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Results of Operations--CTI" and the consolidated financial
statements and the notes thereto of CTI included elsewhere in this document.
    
<TABLE>
<CAPTION>
                               Predecessor Company                                     CTI
                   ----------------------------------------------  ---------------------------------------------
                                       Eleven           Two             One            Nine           Eight
                        Year           Months          Months          Month          Months          Months
                       Ended           Ended           Ended           Ended          Ended           Ended
                     March 31,      February 27,    February 27,     March 31,     December 31,     August 31,
                        1996            1997            1997           1997            1997            1998
                   --------------  --------------  --------------  -------------  --------------  --------------
                                                (Pounds sterling in thousands)
<S>                <C>             <C>             <C>             <C>            <C>             <C>
Statement of
 Operations Data:
Net revenues.....  (Pounds)70,367  (Pounds)70,614  (Pounds)12,805  (Pounds)6,433  (Pounds)56,752  (Pounds)59,033
Operating
 expenses(b).....          62,582          56,612          10,108          5,188          47,976          47,821
                   --------------  --------------  --------------  -------------  --------------  --------------
Operating
 income..........           7,785          14,002           2,697          1,245           8,776          11,212
Interest and
 other income....             --              --              --              49             288             440
Interest expense
 and amortization
 of deferred
 financing
 costs...........             --              --              --            (969)        (12,419)         (9,507)
                   --------------  --------------  --------------  -------------  --------------  --------------
Income (loss)
 before income
 taxes...........           7,785          14,002           2,697            325          (3,355)          2,145
Provision for
 income taxes....             --              --              --             --              --              --
                   --------------  --------------  --------------  -------------  --------------  --------------
Net income (loss)
 under U.K.
 GAAP............           7,785          14,002           2,697            325          (3,355)          2,145
Adjustments to
 convert to U.S.
 GAAP............           3,707           3,993             726             78             866           1,493
                   --------------  --------------  --------------  -------------  --------------  --------------
Net income (loss)
 under U.S.
 GAAP............  (Pounds)11,492  (Pounds)17,995   (Pounds)3,423    (Pounds)403  (Pounds)(2,489)  (Pounds)3,638
                   ==============  ==============  ==============  =============  ==============  ==============
Other Data:
Site data(c):
 Towers and
  revenue
  producing
  rooftop sites
  at end of
  period.........
EBITDA (under
 U.S. GAAP)(d)...  (Pounds)20,620  (Pounds)27,040   (Pounds)5,161  (Pounds)3,064  (Pounds)25,695  (Pounds)29,244
Capital
 expenditures
 (under U.S.
 GAAP)...........          18,079          21,810             711            748          14,361          36,304
Ratio of earnings
 to fixed
 charges(e)......
Ratio of EBITDA
 to cash interest
 expense.........
Summary cash flow
 information
 (under U.S.
 GAAP):
Net cash provided
 by operating
 activities......          24,311          28,146           5,161          4,871          25,555          27,226
Net cash used for
 investing
 activities......         (17,190)        (21,811)           (711)       (52,889)        (14,668)        (36,135)
Net cash provided
 by (used for)
 financing
 activities......          (7,121)         (6,335)         (4,450)        57,706         (12,423)          9,955
<CAPTION>
                                  CTI
                   ---------------------------------
                      One        Nine       Eight
                     Month      Months      Months
                     Ended      Ended       Ended
                   March 31, December 31, August 31,
                    1997(a)    1997(a)     1998(a)
                   --------- ------------ ----------
                        (Dollars in thousands)
<S>                <C>       <C>          <C>
Statement of
 Operations Data:
Net revenues.....   $10,697    $94,365     $98,160
Operating
 expenses(b).....     8,627     79,774      79,517
                   --------- ------------ ----------
Operating
 income..........     2,070     14,591      18,643
Interest and
 other income....        81        479         731
Interest expense
 and amortization
 of deferred
 financing
 costs...........    (1,611)   (20,650)    (15,808)
                   --------- ------------ ----------
Income (loss)
 before income
 taxes...........       540     (5,580)      3,566
Provision for
 income taxes....       --         --          --
                   --------- ------------ ----------
Net income (loss)
 under U.K.
 GAAP............       540     (5,580)      3,566
Adjustments to
 convert to U.S.
 GAAP............       130      1,440       2,483
                   --------- ------------ ----------
Net income (loss)
 under U.S.
 GAAP............   $   670    $(4,140)    $ 6,049
                   ========= ============ ==========
Other Data:
Site data(c):
 Towers and
  revenue
  producing
  rooftop sites
  at end of
  period.........                  801         808
                             ============ ==========
EBITDA (under
 U.S. GAAP)(d)...   $ 5,095    $42,726     $48,627
Capital
 expenditures
 (under U.S.
 GAAP)...........     1,244     23,879      60,366
Ratio of earnings
 to fixed
 charges(e)......      1.44x       --         1.44x
Ratio of EBITDA
 to cash interest
 expense.........      3.58x      2.71x       3.76x
Summary cash flow
 information
 (under U.S.
 GAAP):
Net cash provided
 by operating
 activities......     8,099     42,493      45,271
Net cash used for
 investing
 activities......   (87,944)   (24,390)    (60,085)
Net cash provided
 by (used for)
 financing
 activities......    95,954    (20,657)     16,553
</TABLE>
 
                                       44
<PAGE>
 
- --------
(a) CTI publishes its consolidated financial statements in pounds sterling. For
    the convenience of the reader, the information set forth above contains
    translations of pound sterling amounts into U.S. dollars at the Noon Buying
    Rate on December 31, 1998 of (Pounds)1.00=1.6628. No representation is made
    that the pound sterling amounts have been, could have been or could be
    converted into U.S. dollars at the rate indicated or any other rates. On
    February 26, 1999, the Noon Buying Rate was (Pounds)1.00 = $1.6027.
(b)  Included in operating expenses for the eight months ended August 31, 1998
     are non-cash compensation charges for (Pounds)2.3 million ($3.9 million)
     related to the issuance of stock options to certain executives and
     employees.
(c)  As of August 31, 1998, CTI's 54 revenue producing rooftop sites were
     occupied by its transmitters but were not available for leasing to
     customers.
(d)  EBITDA is defined as operating income (loss) plus depreciation and
     amortization and non-cash compensation charges. EBITDA is presented as
     additional information because management believes it to be a useful
     indicator of CTI's ability to meet debt service and capital expenditure
     requirements. It is not, however, intended as an alternative measure of
     operating results or cash flow from operations (as determined in
     accordance with generally accepted accounting principles). Furthermore,
     CTI's measure of EBITDA may not be comparable to similarly titled measures
     of other companies.
(e)  For purposes of computing the ratio of earnings to fixed charges, earnings
     represent income (loss) before income taxes and fixed charges. Fixed
     charges consist of interest expense, the interest component of operating
     leases and amortization of deferred financing costs. For the nine months
     ended December 31, 1997, earning were insufficient to cover fixed charges
     by (Pounds)2.5 million ($4.1 million).
 
                                       45
<PAGE>
 
               MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS
   
    The following discussion sets forth separately the historical consolidated
results of operations of CCIC and CTI and is intended to assist in
understanding (1) CCIC's consolidated financial condition as of December 31,
1998 and its consolidated results of operations for each year in the three-year
period ended December 31, 1998 and (2) CTI's consolidated results of operations
for each twelve-month period in the two-year period ended March 31, 1998. The
statements in this discussion regarding the industry outlook, our expectations
regarding the future performance of our businesses and the other nonhistorical
statements in this discussion are forward-looking statements. These forward-
looking statements are subject to numerous risks and uncertainties, including
but not limited to the uncertainties relating to decisions on capital
expenditures to be made in the future by wireless carriers and broadcasters and
the risks and uncertainties described in "Risk Factors". This discussion should
be read in conjunction with "Unaudited Pro Forma Condensed Consolidated
Financial Statements", "Selected Financial and Other Data of CCIC", "Selected
Financial and Other Data of CTI" and the consolidated financial statements and
the notes thereto included elsewhere in this prospectus. Results of operations
of the acquired businesses that are wholly and majority owned are included in
our consolidated financial statements for the periods subsequent to the
respective dates of acquisition. As such, our results of operations for the
year ended December 31, 1998 are not comparable to the year ended December 31,
1997, and the results for the year ended December 31, 1997 are not comparable
to the year ended December 31, 1996.     
 
Overview
   
    The continued growth of our business depends substantially on the condition
of the wireless communications and broadcast industries. We believe that the
demand for communications sites will continue to grow and expect that, due to
increased competition, wireless carriers will continue to seek operating and
capital efficiencies by (1) outsourcing certain network services and the build-
out and operation of new and existing infrastructure and (2) co-locating
antennas and transmission equipment on multiple tenant towers. In addition,
wireless carriers are beginning to seek to sell their wireless communications
infrastructure to, or establish joint ventures with, experienced infrastructure
providers, such as us, that have the ability to manage networks.     
   
    Further, we believe that wireless carriers and broadcasters will continue
to seek to outsource the operation of their towers and, eventually, their
transmission networks, including the transmission of their signals. Management
believes that our ability to manage towers and transmission networks and our
proven track record of providing end-to-end services to the wireless
communications and broadcasting industries position it to capture such
business.     
   
    The willingness of wireless carriers to utilize our infrastructure and
related services is affected by numerous factors, including consumer demand for
wireless services, interest rates, cost of capital, availability of capital to
wireless carriers, tax policies, willingness to co-locate equipment, local
restrictions on the proliferation of towers, cost of building towers and
technological changes affecting the number of communications sites needed to
provide wireless communications services to a given geographic area. Our
revenues that are derived from the provision of transmission services to the
broadcasting industry will be affected by the timing of the roll-out of digital
terrestrial television broadcasts in both the United Kingdom and the United
States, as well as in other countries around the world, consumer demand for
digital terrestrial broadcasting, interest rates, cost of capital, zoning
restrictions on tall towers and the cost of building towers.     
   
    As an important part of our business strategy, we will seek (1) to take
advantage of the operating leverage of our site rental business by increasing
the antenna space leased on our owned or managed communications sites, (2) to
leverage our in-house technical and operational expertise,     
 
                                       46
<PAGE>
 
   
(3) to expand our tower footprints by partnering with wireless carriers to
assume ownership of their existing towers and by pursuing build-to-suit
opportunities and (4) to acquire existing transmission networks globally as
opportunities arise.     
 
Results of Operations
   
    Our primary sources of revenues are from (1) the rental of antenna space on
towers and rooftops sites, (2) the provision of network services and (3) the
provision of analog and digital broadcast transmission services.     
 
CCIC
 
    CCIC's primary sources of revenues are from (1) the rental of antenna space
on towers and rooftop sites and (2) the provision of network services, which
includes network design and site selection, site acquisition, site development
and construction and antenna installation.
 
    Site rental revenues are received primarily from wireless communications
companies, including cellular, PCS, paging, specialized mobile radio/enhanced
specialized mobile radio ("SMR/ESMR") and microwave operators. Site rental
revenues are generally recognized on a monthly basis under lease agreements,
which typically have original terms of five years (with three or four optional
renewal periods of five years each). Average revenues for CCIC's managed
rooftop sites are less than for the owned and managed towers because a
substantial portion of the revenues from the tenants at rooftop sites is
remitted to the building owner or manager.
 
    Network services revenues consist of revenues from (1) network design and
site selection, (2) site acquisition, (3) site development and construction,
(4) antenna installation and (5) other services. Network services revenues are
received primarily from wireless communications companies. Network services
revenues are recognized under service contracts which provide for billings on
either a fixed price basis or a time and materials basis. Demand for CCIC's
network services fluctuates from period to period and within periods. See "Risk
Factors--Variability in Demand for Network Services May Reduce the
Predictability of Our Results". Consequently, the operating results of CCIC's
network services businesses for any particular period may vary significantly,
and should not be considered as indicative of longer-term results. CCIC also
derives revenues from the ownership and operation of microwave radio and SMR
networks in Puerto Rico where CCIC owns radio wave spectrum in the 2,000 MHz
and 6,000 MHz range (for microwave radio) and the 800 MHz range (for SMR).
These revenues are generally recognized under monthly management or service
agreements.
   
    Costs of operations for site rental primarily consist of land leases,
repairs and maintenance, utilities, insurance, property taxes and monitoring
costs as well as, in the case of managed sites, rental payments. For any given
tower, such costs are relatively fixed over a monthly or an annual time period.
As such, operating costs for owned towers do not generally increase
significantly as additional customers are added. However, rental expenses at
certain managed towers increase as additional customer antennas are added,
resulting in higher incremental revenues but lower incremental margins than on
owned towers. Costs of operations for network services consist primarily of
employee compensation and related benefits costs, subcontractor services,
consulting fees, and other on-site construction and materials costs. CCIC
incurs these network services costs (1) to support its internal operations,
including construction and maintenance of its owned towers, and (2) to maintain
the employees necessary to provide end-to-end services to third parties
regardless of the level of such business at any time. We believe that our
experienced staff enables us to provide the type of end-to-end services that
enhance our ability to acquire access to the infrastructure of wireless
carriers and to attract significant build-to-suit contracts.     
 
    General and administrative expenses consist primarily of employee
compensation and related benefits costs, advertising, professional and
consulting fees, office rent and related expenses and
 
                                       47
<PAGE>
 
travel costs. Corporate development expenses represent costs incurred in
connection with acquisitions and development of new business initiatives. These
expenses consist primarily of allocated compensation, benefits and overhead
costs that are not directly related to the administration or management of
existing towers.
 
    Depreciation and amortization charges relate to CCIC's property and
equipment (primarily towers, construction equipment and vehicles), goodwill and
other intangible assets recorded in connection with business acquisitions.
Depreciation of towers and amortization of goodwill are computed with a useful
life of 20 years. Amortization of other intangible assets (principally the
value of existing site rental contracts at Crown) is computed with a useful
life of 10 years. Depreciation of construction equipment and vehicles are
generally computed with useful lives of 10 years and 5 years, respectively.
   
    In May 1997, we consummated the TEA acquisition and the TeleStructures
acquisition. In August 1997, we consummated the acquisition of Crown
Communication. In August 1998, we consummated a share exchange with the
shareholders of CTSH, pursuant to which our ownership of CTSH increased from
approximately 34.3% to 80%. In October 1998, CTI consummated the Millennium
acquisition. Results of operations of these acquired businesses are included in
our consolidated financial statements for the periods subsequent to the
respective dates of acquisition. As such, our results of operations for the
year ended December 31, 1998 are not comparable to the year ended December 31,
1997, and the results for the year ended December 31, 1997 are not comparable
to the year ended December 31, 1996. See "--CTI" for a description of the
revenues and operating expenses that are included in CCIC's consolidated
results of operations subsequent to the consummation of the share exchange in
August 1998.     
 
    The following information is derived from CCIC's historical Consolidated
Statements of Operations for the periods indicated.
 
<TABLE>
<CAPTION>
                              Year Ended            Year Ended          Year Ended
                          December 31, 1996      December 31, 1997   December 31, 1998
                          --------------------   ------------------  ------------------
                                      Percent              Percent             Percent
                                      of Net                of Net              of Net
                           Amount    Revenues     Amount   Revenues   Amount   Revenues
                          ---------  ---------   --------  --------  --------  --------
                                              (Dollars in thousands)
<S>                       <C>        <C>         <C>       <C>       <C>       <C>       <C> <C>
Net revenues:
 Site rental and
  broadcast
  transmission..........  $   5,615      90.5%   $ 11,010    35.1%   $ 75,028    66.4%
 Network services and
  other.................        592       9.5      20,395    64.9      38,050    33.6
                          ---------   -------    --------   -----    --------   -----
   Total net revenues...      6,207     100.0      31,405   100.0     113,078   100.0
                          ---------   -------    --------   -----    --------   -----
Operating expenses:
 Costs of operations:
 Site rental and
  broadcast
  transmission..........      1,292      23.0       2,213    20.1      26,254    35.0
 Network services and
  other.................          8       1.4      13,137    64.4      21,564    56.7
                          ---------              --------            --------
   Total costs of
    operations..........      1,300      21.0      15,350    48.9      47,818    42.3
 General and
  administrative........      1,678      27.0       6,824    21.7      23,571    20.8
 Corporate development..      1,324      21.3       5,731    18.3       4,625     4.1
 Non-cash compensation
  charges...............        --        --          --      --       12,758    11.3
 Depreciation and
  amortization..........      1,242      20.0       6,952    22.1      37,239    32.9
                          ---------   -------    --------   -----    --------   -----
Operating income
 (loss).................        663      10.7      (3,452)  (11.0)    (12,933)  (11.4)
Other income (expense):
 Equity in earnings
  (losses) of
  unconsolidated
  affiliate.............        --        --       (1,138)   (3.6)      2,055     1.8
 Interest and other
  income (expense)......        193       3.1       1,951     6.2       4,220     3.7
 Interest expense and
  amortization of
  deferred financing
  costs.................     (1,803)    (29.0)     (9,254)  (29.5)    (29,089)  (25.7)
                          ---------   -------    --------   -----    --------   -----
Loss before income taxes
 and minority
 interests..............       (947)    (15.2)    (11,893)  (37.9)    (35,747)  (31.6)
Provision for income
 taxes..................        (10)     (0.2)        (49)   (0.1)       (374)   (0.3)
Minority interests......        --        --          --      --       (1,654)   (1.5)
                          ---------   -------    --------   -----    --------   -----
Net loss................  $    (957)    (15.4)%  $(11,942)  (38.0)%  $(37,775)  (33.4)%
                          =========   =======    ========   =====    ========   =====
</TABLE>
 
                                       48
<PAGE>
 
Comparison of Years Ended December 31, 1998 and 1997
   
    Consolidated revenues for 1998 were $113.1 million, an increase of $81.7
million from 1997. This increase was primarily attributable to (1) a $64.0
million, or 581.5%, increase in site rental and broadcast transmission
revenues, of which $52.5 million was attributable to CTI and $11.5 million was
attributable to the Crown operations; (2) an $11.4 million increase in network
services revenues from the Crown operations; and (3) $5.6 million in network
services revenues from CTI.     
   
    Costs of operations for 1998 were $47.8 million, an increase of $32.5
million from 1997. This increase was primarily attributable to (1) a $24.0
million increase in site rental and broadcast transmission costs, of which
$20.1 million was attributable to CTI and $3.9 million was attributable to the
Crown operations; (2) a $3.8 million increase in network services costs related
to the Crown operations; and (3) $4.2 million in network services costs from
CTI. Costs of operations for site rental and broadcast transmission as a
percentage of site rental and broadcast transmission revenues increased to
35.0% for 1998 from 20.1% for 1997, primarily due to (1) higher costs
attributable to the CTI operations which are inherent with CTI's broadcast
transmission business, and (2) higher costs for the Crown operations. Costs of
operations for network services as a percentage of network services revenues
decreased to 56.7% for 1998 from 64.4% for 1997, primarily due to improved
margins from the Crown operations. Margins from the Crown network services
operations vary from period to period, often as a result of increasingly
competitive market conditions.     
   
    General and administrative expenses for 1998 were $23.6 million, an
increase of $16.7 million from 1997. This increase was primarily attributable
to (1) an $11.3 million increase in expenses related to the Crown operations;
(2) a $2.8 million increase in expenses at our corporate office; and (3) $2.4
million in expenses at CTI. General and administrative expenses as a percentage
of revenues decreased for 1998 to 20.8% from 21.7% for 1997 because of lower
overhead costs as a percentage of revenues for CTI, partially offset by higher
overhead costs as a percentage of revenues for Crown and the increase in costs
at our corporate office.     
   
    Corporate development expenses for 1998 were $4.6 million, a decrease of
$1.1 million from 1997. Corporate development expenses for 1997 included
nonrecurring compensation charges associated with the CTI Investment of (1)
$0.9 million for certain executive bonuses and (2) the repurchase of shares of
our common stock from a member of our Board of Directors, which resulted in
compensation charges of $1.3 million. Corporate development expenses for 1998
included discretionary bonuses related to our performance totaling
approximately $1.8 million for certain members of our management.     
 
    We have recorded non-cash compensation charges of $12.8 million related to
the issuance of stock options to certain employees and executives. Such charges
are expected to amount to approximately $1.6 million per year through 2002 and
approximately $0.8 million in 2003. See "--Compensation Charges Related to
Stock Option Grants".
 
    Depreciation and amortization for 1998 was $37.2 million, an increase of
$30.3 million from 1997. This increase was primarily attributable to (1) a $9.5
million increase in depreciation and amortization related to the property and
equipment, goodwill and other intangible assets acquired in the Crown
acquisition; and (2) $20.3 million of depreciation and amortization related to
the property and equipment and goodwill from CTI.
 
    The equity in earnings (losses) of unconsolidated affiliate represents our
34.3% share of CTI's net earnings (losses) for the periods from March 1997
through August 1998 (at which time the share exchange with CTI's shareholders
was consummated). For the eight months ended August 31, 1998, after making
appropriate adjustments to CTI's results of operations for such period to
conform to generally accepted accounting principles of the United States, CTI
had net revenues, operating
 
                                       49
<PAGE>
 
income, interest expense (including amortization of deferred financing costs)
and net income of $97.2 million, $18.6 million, $13.4 million and $6.0 million,
respectively. Included in CTI's results of operations for such period are non-
cash compensation charges for approximately $3.8 million related to the
issuance of stock options to certain members of CTI's management.
 
    Interest and other income for 1997 includes a $1.2 million fee received in
March 1997 as compensation for leading the investment consortium which provided
the equity financing for CTI. Interest income for 1998 resulted primarily from
(1) the investment of excess proceeds from the sale of the 10 5/8% discount
notes in November 1997; and (2) the investment of the net proceeds from the IPO
in August 1998. See "--Liquidity and Capital Resources".
 
    Interest expense and amortization of deferred financing costs for 1998 was
$29.1 million, an increase of $19.8 million, or 214.3%, from 1997. This
increase was primarily attributable to amortization of the original issue
discount on the 10 5/8% Notes and interest on CTI's indebtedness.
 
    Minority interests represent the minority shareholder's 20% interest in
CTI's operations.
 
Comparison of Years Ended December 31, 1997 and 1996
 
    Consolidated revenues for 1997 were $31.4 million, an increase of $25.2
million from 1996. This increase was primarily attributable to (1) a $5.4
million, or 96.1%, increase in site rental revenues, of which $4.2 million was
attributable to the Crown operations and $0.7 million was attributable to the
Puerto Rico operations; (2) $10.4 million in network services revenues from
TEA; and (3) $7.2 million in network services revenues from the Crown
operations. The remainder of the increase was largely attributable to higher
revenues from SMR and microwave radio services in Puerto Rico and the monthly
service fees received from CTI beginning in March 1997.
 
    Costs of operations for 1997 were $15.4 million, an increase of $14.1
million from 1996. This increase was primarily attributable to (1) $8.5 million
of network services costs related to the TEA operations; (2) $3.9 million of
network services costs related to the Crown operations; and (3) $0.9 million in
site rental costs attributable to the Crown operations. Costs of operations for
site rental as a percentage of site rental revenues decreased to 20.1% for 1997
from 23.0% for 1996 because of increased utilization of the towers located in
the southwestern United States and Puerto Rico. Costs of operations for network
services as a percentage of network services revenues were 64.4% for 1997,
reflecting lower margins that are inherent in the network services businesses
acquired in 1997.
 
    General and administrative expenses for 1997 were $6.8 million, an increase
of $5.1 million from 1996. This increase was primarily attributable to $3.0
million of expenses related to the Crown operations and $1.4 million of
expenses related to the TEA operations, along with an increase in costs of $0.2
million at CCIC's corporate office. General and administrative expenses as a
percentage of revenues decreased for 1997 to 21.7% from 27.0% for 1996 because
of lower overhead costs as a percentage of revenues for Crown and TEA.
 
    Corporate development expenses for 1997 were $5.7 million, an increase of
$4.4 million from 1996. A substantial portion of this increase was attributable
to nonrecurring compensation charges associated with the CTI Investment of (1)
$0.9 million for certain executive bonuses and (2) the repurchase of shares of
CCIC's common stock from a member of its Board of Directors, which resulted in
compensation charges of $1.3 million. The remaining $2.2 million of the
increase in corporate development expenses was attributable to a higher
allocation of personnel costs, along with an overall increase in such costs,
associated with an increase in acquisition and business development activities.
 
    Depreciation and amortization for 1997 was $7.0 million, an increase of
$5.7 million from 1996. This increase was primarily attributable to (1) $4.7
million of depreciation and amortization related to
 
                                       50
<PAGE>
 
the property and equipment, goodwill and other intangible assets acquired in
the Crown acquisition; (2) $0.5 million of depreciation and amortization
related to the property and equipment and goodwill acquired in the TEA and
TeleStructures acquisitions; and (3) $0.3 million resulting from twelve months
of depreciation related to the property and equipment acquired in the Puerto
Rico acquisition.
 
    The equity in losses of unconsolidated affiliate of $1.1 million represents
CCIC's 34.3% share of CTI's net loss for the period from March through December
1997. After making appropriate adjustments to CTI's results of operations for
such period to conform to generally accepted accounting principles of the
United States, CTI had net revenues, operating income, interest expense
(including amortization of deferred financing costs) and net losses of $103.5
million, $16.5 million, $20.4 million and $3.3 million, respectively.
 
    Interest and other income for 1997 includes a $1.2 million fee received in
March 1997 as compensation for leading the investment consortium which provided
the equity financing for CTI, the impact on earnings of which was partially
offset by certain executive bonuses related to the CTI Investment and included
in corporate development expenses. Interest income for 1997 resulted primarily
from the investment of excess proceeds from the sale of CCIC's Series C
convertible preferred stock in February 1997.
 
    Interest expense and amortization of deferred financing costs for 1997 was
$9.3 million, an increase of $7.5 million, or 413.3%, from 1996. This increase
was primarily attributable to (1) commitment fees related to an unfunded
interim loan facility related to the Crown acquisition and an unfunded
revolving credit facility; (2) interest on notes payable to the former
stockholders of Crown for a portion of the purchase price of the Crown
Communication Inc.; (3) amortization of the original issue discount on the 10
5/8% discount notes; (4) interest and fees associated with borrowings under
CCIC's bank credit facility which were used to finance the Crown acquisition on
an interim basis; (5) interest on outstanding borrowings assumed in connection
with the Crown acquisition; and (6) interest on borrowings under CCIC's bank
credit facility which were used to finance the acquisition of the Puerto Rico
system.
 
CTI
 
    CTI's primary sources of revenues are from (1) the provision of analog and
digital broadcast transmission services to the BBC and commercial broadcasters,
(2) the rental of antenna space on towers and (3) the provision of network
services, which includes broadcast consulting, network design and site
selection, site acquisition, site development and antenna installation and site
management and other services.
 
    Broadcast transmission services revenues are received for both analog and
digital transmission services. Monthly analog transmission revenues are
principally received from the BBC under a contract with an initial 10-year term
through March 31, 2007. Digital transmission services revenues from the BBC and
ONdigital are recognized under contracts with initial terms of 12 years through
November 15, 2010. Monthly revenues from these digital transmission contracts
increase over time as the network rollout progresses. See "Business--U.K.
Operations--Significant Contracts".
 
    Site rental revenues are received from other broadcast transmission service
providers (primarily NTL) and wireless communications companies, including all
four U.K. cellular operators (Cellnet, Vodafone, One2One and Orange). As of
December 31, 1998, approximately 200 companies rented space on approximately
514 of CTI's 919 towers and rooftops. Site rental revenues are generally
recognized on a monthly basis under lease agreements with original terms of
three to twelve years. Such lease agreements generally require annual payments
in advance, and include rental rate adjustment provisions between one and three
years from the commencement of the lease. Site rental revenues are expected to
become an increasing portion of CTI's total U.K. revenue base, and the
 
                                       51
<PAGE>
 
Company believes that the demand for site rental from communication service
providers will increase in line with the expected growth of these communication
services in the United Kingdom.
 
    Network services revenues consist of (1) network design and site selection,
site acquisition, site development and antenna installation (collectively,
"network design and development") and (2) site management and other services.
Network design and development services are provided to (1) a number of
broadcasting and related organizations, both in the United Kingdom and other
countries; (2) all four U.K. cellular operators; and (3) a number of other
wireless communications companies, including Dolphin and Highway One. These
services are usually subject to a competitive bid, although a significant
proportion result from an operator coming onto an existing CTI site. Revenues
from such services are recognized on either a fixed price or a time and
materials basis. Site management and other services, consisting of both network
monitoring and equipment maintenance, are carried out in the United Kingdom for
a number of emergency service organizations. Revenues for such services are
received under contracts with original terms of between three and five years.
They provide for fixed prices with respect to network monitoring and variable
pricing dependent on the level of equipment maintenance carried out in a given
period.
 
    Costs of operations for broadcast transmission services consist primarily
of employee compensation and related benefits costs, utilities, rental payments
under the Site-Sharing Agreement with NTL, circuit costs and repairs and
maintenance on both transmission equipment and structures.
 
    Site rental operating costs consist primarily of employee compensation and
related benefits costs, utilities and repairs and maintenance. The majority of
such costs are relatively fixed in nature, with increases in revenue from new
installations on existing sites generally being achieved without a
corresponding increase in costs.
 
    Costs of operations for network services consist primarily of employee
compensation and related benefits costs and on-site construction and materials
costs.
 
    General and administrative expenses consist primarily of office occupancy
and related expenses, travel costs, professional and consulting fees,
advertising, insurance and employee training and recruitment costs. Corporate
development expenses represent costs incurred in connection with acquisitions
and development of new business initiatives. These expenses consist primarily
of external professional fees related to specific activities and allocated
compensation, benefits and overhead costs that are not directly related to the
administration or management of CTI's existing lines of business.
 
    Depreciation and amortization charges relate to CTI's property and
equipment (primarily towers, broadcast transmission equipment and associated
buildings) and goodwill recorded in connection with the acquisition of the Home
Service Transmission business from the BBC (the "BBC Home Service Transmission
Business"). Depreciation of towers is computed with useful lives of 20 to 25
years; depreciation of broadcast transmission equipment is computed with a
useful life of 20 years; and depreciation of buildings is computed with useful
lives ranging from 20 to 50 years. Amortization of goodwill is computed with a
useful life of 20 years.
   
    The following information is derived from the Consolidated Profit and Loss
Accounts of (1) CTI for periods subsequent to February 28, 1997 (the date of
inception of CTI's operations) and (2) the BBC Home Service Transmission
Business for periods prior to that date. For purposes of the following
discussion, CTI's results for the month ended March 31, 1997 have been combined
with the results of the BBC Home Service Transmission Business for the eleven
months ended February 27, 1997, and CTI's results for the nine months ended
December 31, 1997 have been combined with its results for the three months
ended March 31, 1998. The following discussion presents an analysis of such
combined results for the twelve-month periods ended March 31, 1998 and 1997.
Results for     
 
                                       52
<PAGE>
 
CTI are not comparable to results from the BBC Home Service Transmission
Business due to differences in the carrying amounts of property and equipment
and goodwill. As of December 31, 1997, CTI changed its fiscal year end for
financial reporting purposes from March 31 to December 31; as such, the results
for the three months ended March 31, 1998 are unaudited.
 
    CTI uses the U.K. pound sterling as the functional currency for its
operations. The following amounts have been translated to U.S. dollars using
the average Noon Buying Rate for each period. The following amounts reflect
certain adjustments to present the results of operations in accordance with
U.S. generally accepted accounting principles ("GAAP"). For the results of the
BBC Home Service Transmission Business, such adjustments affect depreciation
and amortization expense as a result of differences in the carrying amounts for
property and equipment; for CTI, such adjustments affect (1) operating expenses
as a result of differences in the accounting for pension costs, and (2)
interest expense as a result of the capitalization of interest costs in
connection with constructed assets.
 
<TABLE>
<CAPTION>
                               Twelve Months Ended      Twelve Months Ended
                                 March 31, 1997           March 31, 1998
                               -----------------------  -----------------------
                                             Percent                  Percent
                                             of Net                   of Net
                                Amount      Revenues     Amount      Revenues
                               -----------  ----------  -----------  ----------
                                       (Dollars in thousands)
<S>                            <C>          <C>         <C>          <C>
Net revenues:
  Site rental and broadcast
   transmission............... $   112,122       91.7%  $   113,558       89.2%
  Network services and other..      10,090        8.3        13,731       10.8
                               -----------   --------   -----------   --------
    Total net revenues........     122,212      100.0       127,289      100.0
                               -----------   --------   -----------   --------
Operating expenses:
  Costs of operations:
   Site rental and broadcast
    transmission..............      61,339       54.7        53,957       47.5
   Network services and oth-
    er........................       5,912       58.6         6,075       44.2
                               -----------   --------   -----------   --------
    Total cost of operations..      67,251       55.0        60,032       47.1
  General and administrative..       7,196        5.9         8,626        6.8
  Corporate development.......         --         --          2,303        1.8
  Depreciation and
   amortization...............      17,256       14.1        37,382       29.4
                               -----------   --------   -----------   --------
Operating income..............      30,509       25.0        18,946       14.9
Other income (expense):
  Interest and other income...          79        0.1           746        0.6
  Interest expense and
   amortization of deferred
   financing costs............      (1,434)      (1.2)      (24,201)     (19.0)
Income (loss) before income
 taxes........................      29,154       23.9        (4,509)      (3.5)
  Provision for income taxes..         --         --            --         --
                               -----------   --------   -----------   --------
Net income (loss)............. $    29,154       23.9%  $    (4,509)      (3.5)%
                               ===========   ========   ===========   ========
</TABLE>
 
Comparison of Twelve Months Ended March 31, 1998 and Twelve Months Ended March
31, 1997
 
    Consolidated revenues for the twelve months ended March 31, 1998 were
$127.3 million, an increase of $5.1 million from the twelve months ended March
31, 1997. This increase was primarily attributable to (1) a $1.4 million
increase in broadcast transmission services and site rental revenues and (2) a
$3.6 million increase in network services and other revenues. Revenues from the
BBC for the twelve months ended March 31, 1998 amounted to $79.5 million, or
62.5% of total revenues, as compared to $85.5 million, or 70.0% of total
revenues, for the twelve months ended March 31, 1997. Revenues from NTL for the
twelve months ended March 31, 1998 amounted to $11.8 million, or 9.2% of total
revenues. Network services revenues for the twelve months ended March 31, 1998
consisted of $10.6 million from network design and development services and
$3.1 million from site management and other services.
 
                                       53
<PAGE>
 
    Costs of operations for the twelve months ended March 31, 1998 were $60.0
million, a decrease of $7.2 million from the twelve months ended March 31,
1997. This decrease was primarily attributable to a $7.4 million decrease in
broadcast transmission services and site rental costs, partially offset by a
$0.2 million increase in network services and other costs. Costs of operations
as a percentage of revenues for broadcast transmission services and site rental
were 47.5% for the twelve months ended March 31, 1998, as compared to 54.7% for
the twelve months ended March 31, 1997. This decrease was attributable to (1)
increases in site rental revenues from existing sites with little change in
site operating costs; and (2) the elimination, as of February 28, 1997, of
certain costs recharged to the BBC Home Service Transmission Business by the
BBC. Costs of operations as a percentage of revenues for network services and
other were 44.2% for the twelve months ended March 31, 1998, as compared to
58.6% for the twelve months ended March 31, 1997. This decrease was
attributable to (1) a higher proportion of broadcast consulting revenues, which
result in higher margins than certain other network design and development
services and (2) the elimination, as of February 28, 1997, of certain costs
recharged to the BBC Home Service Transmission Business by the BBC. Costs of
operations for site rental and broadcast transmission for the twelve months
ended March 31, 1998 includes non-cash compensation charges for $1.1 million
related to the issuance of stock options to certain employees.
 
    General and administrative expenses for the twelve months ended March 31,
1998 were $8.6 million, an increase of $1.4 million from the twelve months
ended March 31, 1997. As a percentage of revenues, general and administrative
expenses were 6.8% and 5.9% for the twelve months ended March 31, 1998 and
1997, respectively. This increase was attributable to costs incurred by CTI as
a separate enterprise which were not directly incurred by the BBC Home Service
Transmission Business as a part of the BBC.
 
    Corporate development expenses for the twelve months ended March 31, 1998
relate primarily to costs incurred in connection with certain projects in
Australasia and non-cash compensation charges for $1.8 million related to the
issuance of stock options to certain executives.
   
    Depreciation and amortization for the twelve months ended March 31, 1998
was $37.4 million, an increase of $20.1 million from the twelve months ended
March 31, 1997. Monthly charges for depreciation and amortization increased for
periods subsequent to February 28, 1997 due to (1) a decrease in the estimated
useful lives for certain transmission and power plant equipment from 25 to 20
years; and (2) the amortization of goodwill recorded in connection with the
acquisition of the BBC Home Service Transmission Business.     
   
    Interest and other income for the twelve months ended March 31, 1998
resulted primarily from (1) the investment of excess proceeds from amounts
drawn under CTI's bank credit facilities in February 1997; and (2) the
investment of cash generated from operations during the period.     
 
    Interest expense and amortization of deferred financing costs for the
twelve months ended March 31, 1998 was $24.2 million. This amount was comprised
of (1) $4.9 million related to amounts drawn under the CTI Credit Facility; (2)
$15.6 million related to the CTI Bonds; and (3) $3.7 million for the
amortization of deferred financing costs. Interest expense and amortization of
deferred financing costs of $1.4 million for the twelve months ended March 31,
1997 was attributable to amounts drawn under the CTI Credit Facility. The BBC
Home Service Transmission Business did not incur any financing costs as a part
of the BBC prior to February 28, 1997.
 
Liquidity and Capital Resources
   
    Our business strategy contemplates substantial capital expenditures (1) in
connection with the expansion of our tower portfolios by partnering with
wireless carriers to assume ownership or control of their existing towers by
pursuing build-to-suit opportunities and by pursuing other tower acquisition
    
                                       54
<PAGE>
 
opportunities and (2) to acquire existing transmission networks globally as
opportunities arise. Since its inception, CCIC has generally funded its
activities (other than acquisitions and investments) through excess proceeds
from contributions of equity capital. CCIC has financed acquisitions and
investments with the proceeds from equity contributions, borrowings under our
senior credit facilities, issuances of debt securities and the issuance of
promissory notes to sellers. Since its inception, CTI has generally funded its
activities (other than the acquisition of the BBC Home Service Transmission
Business) through cash provided by operations and borrowings under CTI's credit
facility. CTI financed the acquisition of the BBC Home Service Transmission
Business with the proceeds from equity contributions and the issuance of CTI's
9% bonds.
 
    For the years ended December 31, 1996, 1997 and 1998, our net cash provided
by (used for) operating activities was ($0.5 million), ($0.6 million) and $45.0
million, respectively. For the years ended December 31, 1996, 1997 and 1998,
our net cash provided by financing activities was $21.2 million, $159.8 million
and $345.2 million, respectively. Our primary financing-related activities in
1998 included the following:
     
    Exchangeable Preferred Stock Offering. On December 16, 1998, we privately
  placed 200,000 shares of our 12 3/4% Senior Exchangeable Preferred Stock
  due 2010, with a liquidation preference of $1,000 per share, resulting in
  net proceeds to us of approximately $193.0 million. We used a portion of
  the net proceeds of the exchangeable preferred stock offering to repay our
  outstanding indebtedness under Crown Communication's senior credit
  facility. We used the remainder of the net proceeds of the exchangeable
  preferred stock offering to finance a portion of our investment in the Bell
  Atlantic joint venture.     
     
    Initial Public Offering. On August 18, 1998, we consummated our initial
  public offering at a price to the public of $13.00 per share. We sold
  12,320,000 shares of our common stock and received proceeds of $151.0
  million (after underwriting discounts of $9.1 million but before other
  expenses of the IPO, which totaled approximately $4.1 million). We used the
  net proceeds from our IPO to finance a portion of our investment in the
  Bell Atlantic joint venture.     
   
    Capital expenditures were $138.8 million for the twelve months ended
December 31, 1998, of which $3.7 million were for CCIC, $84.9 million were for
Crown Communication and $50.2 million were for CTI. We anticipate that we will
build, through the end of 1999, approximately 750 towers in the United States
at a cost of approximately $175.0 million and approximately 200 towers in the
United Kingdom at a cost of approximately $23.0 million. We also expect that
the capital expenditure requirements related to the roll-out of digital
broadcast transmission in the United Kingdom will be approximately (Pounds)40.0
million ($66.5 million).     
 
    In addition to capital expenditures in connection with build-to-suits, we
expect to apply a significant amount of capital to finance the cash portion of
the consideration being paid in connection with the Proposed Transactions.
   
    In connection with the Bell Atlantic joint venture, we contributed, in
addition to other consideration, $250.0 million in cash to the joint venture.
The joint venture borrowed approximately $180.0 million under a committed
$250.0 million revolving credit facility, following which the joint venture
made a $380.0 million cash distribution to Bell Atlantic.     
   
    In connection with the proposed BellSouth transaction, we will pay
BellSouth, in addition to other consideration, $430.0 million in cash. We have
deposited $50.0 million in an escrow account pending the first closing of the
transaction, which we funded through a loan agreement we entered into on March
15, 1999. We expect to use a portion of the net proceeds of our offerings to
finance this transaction.     
 
                                       55
<PAGE>
 
   
    In connection with the proposed Powertel acquisition, we will pay Powertel
$275.0 million in cash. We have deposited $50.0 million, which we funded
through the March 15, 1999 loan agreement, in an escrow account to be applied
to the purchase price at closing. We expect to use a portion of the net
proceeds of our offerings to finance this transaction.     
   
    We expect that the consummation of the 1999 Transactions and the execution
of our new tower build, or build-to-suit program, will have a material impact
on our liquidity. We expect that once integrated, these transactions will have
a positive impact on liquidity, but will require some period of time to offset
the initial adverse impact on liquidity. In addition, we believe that as new
build-to-suit towers become operational and we begin to add tenants, they
should result in a long-term increase in liquidity.     
   
    Our liquidity may also be materially impacted if we fail to consummate the
proposed BellSouth transaction or the proposed Powertel acquisition. In the
event we consummate our offerings and subsequently fail to consummate the
proposed BellSouth transaction or the proposed Powertel acquisition, the
proceeds of the offerings would no longer be required to be allocated to
finance such transactions and would be available to us as additional liquidity.
The increase in our liquidity, however, could be somewhat offset by any portion
of the escrow payments made in connection with such transactions that we may
forfeit as a result of not closing such transactions. See "The 1999
Transactions".     
   
    To fund the execution of the our business strategy, including the proposed
transactions described above, we expect to use the net proceeds of our
offerings, the borrowings available under Crown Communication's senior credit
facility and the borrowings available under CTI's credit facility. Following
consummation of our offerings and assuming the proposed transactions are
consummated, we believe we will have sufficient liquidity to fund our
operations and pursue our business strategy in the near term. Our business
strategy, however, includes the pursuit of additional tower acquisition and
build-out opportunities, and we may have additional cash needs as opportunities
arise. Some of the opportunities that we are currently pursuing could require
significant additional capital. In the event we do not otherwise have cash
available, or borrowings under our credit facilities have otherwise been
utilized, when an opportunity arises, we would be forced to seek additional
debt or equity financing or to forego the opportunity. In the event we
determine to seek additional debt or equity financing, there can be no
assurance that any such financing will be available (on commercially acceptable
terms or at all) or permitted by the terms of our existing indebtedness. To the
extent we are unable to finance future capital expenditures, we will be unable
to achieve our currently contemplated business strategy.     
   
    As of December 31, 1998, after giving pro forma effect to our offerings, we
would have had consolidated cash and cash equivalents of $962.6 million
(including $6.5 million at CTI), consolidated long-term debt of $729.7 million,
consolidated redeemable preferred stock of $201.1 million and consolidated
stockholders' equity of $1,114.6 million. As of December 31, 1998, after giving
pro forma effect to the offerings and the 1999 Transactions, we would have had
consolidated cash and cash equivalents of $49.6 million (including $6.5 million
at CTI and $45.9 million at the Bell Atlantic joint venture), consolidated
long-term debt of $909.7 million, consolidated redeemable preferred stock of
$201.1 million and consolidated stockholders' equity of $1,491.6 million.     
   
    As of March 1, 1999, Crown Communication and its subsidiaries had unused
borrowing availability under its senior credit facility of approximately $54.0
million, and CTI had unused borrowing availability under its credit facility of
approximately (Pounds)24.0 million ($39.9 million). As of December 31, 1998,
Crown Communication and its subsidiaries and CTI and its subsidiaries had
approximately $77.6 million and (Pounds)30.8 million ($51.2 million) of unused
borrowing availability, respectively, under Crown Communication's senior credit
facility and CTI's credit facility. Upon its formation, the Bell Atlantic joint
venture borrowed $180.0 million under a committed $250.0 million     
 
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<PAGE>
 
   
credit facility. Crown Communication's senior credit facility, CTI's credit
facility and the joint venture's credit facility require that the respective
borrowers maintain certain financial covenants; in addition, all three credit
facilities place restrictions on the ability of the borrower and its
subsidiaries to, among other things, incur debt and liens, pay dividends, make
capital expenditures, undertake transactions with affiliates and make
investments. These facilities also limit the ability of the borrowing
subsidiaries to pay dividends to CCIC.     
   
    Prior to May 15, 2003, the interest expense on our 10 5/8% discount notes
will be comprised solely of the amortization of original issue discount.
Thereafter, the 10 5/8% discount notes will require annual cash interest
payments of approximately $26.7 million. Prior to December 15, 2003, we do not
expect to pay cash dividends on our exchangeable preferred stock or, if issued,
cash interest on the exchange debentures. Thereafter, assuming all dividends or
interest have been paid-in-kind, our exchangeable preferred stock or, if
issued, the exchange debentures will require annual cash dividend or interest
payments of approximately $47.8 million. Annual cash interest payments on the
CTI Bonds are (Pounds)11.25 million ($18.7 million). In addition, Crown
Communication's senior credit facility and CTI's credit facility will require
periodic interest payments on amounts borrowed thereunder. Our ability to make
scheduled payments of principal of, or to pay interest on, our debt
obligations, and our ability to refinance any such debt obligations (including
our 10 5/8% discount notes and the CTI Bonds), will depend on our future
performance, which, to a certain extent, is subject to general economic,
financial, competitive, legislative, regulatory and other factors that are
beyond our control. We anticipate that we may need to refinance all or a
portion of our indebtedness (including our 10 5/8% discount notes and the CTI
Bonds) on or prior to its scheduled maturity. There can be no assurance that we
will be able to effect any required refinancings of our indebtedness on
commercially reasonable terms or at all. See "Risk Factors".     
 
Compensation Charges Related to Stock Option Grants
 
    During the period from April 24, 1998 through July 15, 1998, we granted
options to employees and executives for the purchase of 3,236,980 shares of our
common stock at an exercise price of $7.50 per share. Of such options, options
for 1,810,730 shares vested upon consummation of the IPO and the remaining
options for 1,426,250 shares will vest at 20% per year over five years,
beginning one year from the date of grant. In addition, we have assigned our
right to repurchase shares of our common stock from a stockholder (at a price
of $6.26 per share) to two individuals (including a newly-elected director)
with respect to 100,000 of such shares. Since the granting of these options and
the assignment of these rights to repurchase shares occurred subsequent to the
date of the share exchange agreement with CTI's shareholders and at prices
substantially below the price to the public in the IPO, we have recorded a non-
cash compensation charge related to these options and shares based upon the
difference between the respective exercise and purchase prices and the price to
the public in the IPO. Such compensation charge will total approximately $18.4
million, of which approximately $10.6 million was recognized upon consummation
of the IPO (for such options and shares which vested upon consummation of the
IPO), and the remaining $7.8 million is being recognized over five years
(approximately $1.6 million per year) through the second quarter of 2003. An
additional $1.6 million in non-cash compensation charges will be recognized
through the third quarter of 2001 for stock options issued to certain members
of CTI's management prior to the consummation of the share exchange.
 
Impact of Recently Issued Accounting Standards
 
    In April 1998, the Accounting Standards Executive Committee of the American
Institute of Certified Public Accountants issued Statement of Position 98-5,
Reporting on the Costs of Start-Up Activities ("SOP 98-5"). SOP 98-5 requires
that costs of start-up activities be charged to expense as incurred and broadly
defines such costs. We have deferred certain costs incurred in connection with
potential business initiatives and new geographic markets, and SOP 98-5 will
require that such
 
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<PAGE>
 
deferred costs be charged to results of operations upon its adoption. SOP 98-5
is effective for fiscal years beginning after December 15, 1998. We will adopt
the requirements of SOP 98-5 as of January 1, 1999. The cumulative effect of
the change in accounting principle for the adoption of SOP 98-5 will result in
a charge to results of operations in our financial statements for the three
months ending March 31, 1999; it is currently estimated that such charge will
amount to approximately $2,300,000.
 
    In June 1998, the FASB issued Statement of Financial Accounting Standards
No. 133, Accounting for Derivative Instruments and Hedging Activities ("SFAS
133"). SFAS 133 requires that derivative instruments be recognized as either
assets or liabilities in the consolidated balance sheet based on their fair
values. Changes in the fair values of such derivative instruments will be
recorded either in results of operations or in other comprehensive income,
depending on the intended use of the derivative instrument. The initial
application of SFAS 133 will be reported as the effect of a change in
accounting principle. SFAS 133 is effective for all fiscal quarters of fiscal
years beginning after June 15, 1999. We will adopt the requirements of SFAS
133 in our financial statements for the three months ending March 31, 2000. We
have not yet determined the effect that the adoption of SFAS 133 will have on
our consolidated financial statements.
 
Year 2000 Compliance
 
    The year 2000 problem is the result of computer programs having been
written using two digits (rather than four) to define the applicable year. Any
of our computer programs that have date-sensitive software may recognize a
date using "00" as 1900 rather than the year 2000, or may not recognize the
date at all. This could result in a system failure or miscalculations causing
disruption of operations including, among other things, a temporary inability
to process transactions, send invoices, or engage in similar normal business
activities.
 
    In 1997 we established a year 2000 project to ensure that the issue
received appropriate priority and that necessary resources were made
available. This project includes the replacement of our worldwide business
computer systems with systems that use programs primarily from J.D. Edwards,
Inc. The new systems are expected to make approximately 90% of our business
computer systems year 2000 compliant and are in production today. Remaining
business software programs, including those supplied by vendors, will be made
year 2000 compliant through the year 2000 project or they will be retired.
None of our other information technology projects has been delayed due to the
implementation of the year 2000 project.
 
    Our year 2000 project is divided into the following phases: (1)
inventorying year 2000 items; (2) assigning priorities to identified items;
(3) assessing the year 2000 compliance of items determined to be material to
us; (4) repairing or replacing material items that are determined not to be
year 2000 compliant; (5) testing material items; and (6) designing and
implementing contingency and business continuation plans for each organization
and company location. We have completed the inventory and priority assessment
phases and are 90% complete with the assessing compliance phase. The remaining
items include various third party assurances regarding the year 2000 status of
their operations. We are now continuing with the testing phase of the year
2000 project. All critical broadcast equipment and non-information technology
related equipment has been tested and is either year 2000 compliant, has been
designated as year 2000 ready, or will be repaired or replaced by June 1999. A
year 2000 ready designation implies the equipment or system will function
without adverse effects beyond year 2000 but may not be aware of the century.
All critical information technology systems have been designated year 2000
compliant or are scheduled to be retired or remediated by July 1999. The
testing phase is ongoing as hardware or system software is remediated,
upgraded or replaced. Testing as well as remediation is scheduled for
completion in July 1999. The final phase of our year 2000 project, contingency
planning, will be completed and tested to the extent possible by September
1999.
 
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<PAGE>
 
    We have expended $6.9 million on the year 2000 project through December 31,
1998, of which approximately $6.8 million related to the implementation of the
J.D. Edwards Systems and related hardware. Funds for the year 2000 project are
provided from a separate budget of $0.6 million for all items.
 
    The failure to correct a material year 2000 problem could result in an
interruption in, or a failure of, certain normal business activities or
operations. Such failures could materially and adversely affect our results of
operations, liquidity and financial condition. Due to the general uncertainty
inherent in the year 2000 problem, resulting in part from the uncertainty of
the year 2000 readiness of third-party suppliers and customers, we are unable
to determine at this time whether the consequences of year 2000 failures will
have a material impact on our results of operations, liquidity or financial
condition. The year 2000 project is expected to significantly reduce our level
of uncertainty about the year 2000 problem and, in particular, about the year
2000 compliance and readiness of our material business partners. We believe
that, with the implementation of new business systems and completion of the
project as scheduled, the possibility of significant interruptions of normal
operations should be reduced.
 
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<PAGE>
 
                              INDUSTRY BACKGROUND
 
General
   
    We own, operate and manage wireless communications and broadcast
transmission infrastructure, including towers and other communications sites,
and also provide a full range of complementary network support services. Each
of the wireless communications and broadcasting industries is currently
experiencing a period of significant change.     
   
    The wireless communications industry is growing rapidly as new wireless
technologies are developed and consumers become more aware of the benefits of
wireless services. Wireless technologies are being used in more applications
and the cost of wireless services to consumers is declining. A significant
number of new competitors in the wireless communications industry have
developed as additional frequency spectrum has become available for a wide
range of uses, most notably personal communications services. This competition,
combined with an increasing reliance on wireless communications by consumers
and businesses, has led to an increased demand for higher quality,
uninterrupted service and improved coverage, which, in turn, has led to
increased demand for communications sites as new carriers develop and
construct, or "build out," their networks and existing carriers upgrade and
expand their networks to maintain their competitiveness. These trends are
affecting the wireless communications industry around the world.     
   
    As the wireless communications industry has become more competitive,
wireless carriers have sought operating and capital efficiencies by outsourcing
certain network services and the build-out and operation of new and existing
infrastructure and by placing, or "co-locating," their transmission equipment
with the equipment of other carriers on multiple tenant towers. The need for
co-location has also been driven by the growing trend by municipalities to slow
the proliferation of towers. Further, we believe that there has been a
fundamental shift in strategy among established wireless carriers relating to
infrastructure ownership. We believe that in order to free up capital for the
growth and management of their customer bases and expansion of their service
offerings, such carriers are beginning to seek to sell their wireless
communications infrastructure to, or establish joint ventures with, experienced
infrastructure providers that have the ability to manage networks. We believe
that those infrastructure providers with a proven track record of providing
comprehensive services will be best positioned to successfully acquire access
to such wireless communications infrastructure.     
   
    The television broadcasting industry is experiencing significant change
because of the impending widespread deployment of ground-based, or
"terrestrial", digital television broadcasting. In the United States, the
Federal Communications Commission has required the four major networks (ABC,
CBS, NBC and Fox) to commence digital terrestrial television broadcasts in the
top ten markets by May 1999 and in the top 30 markets by November 1999. In the
United Kingdom, pursuant to the Broadcasting Act 1996, six digital television
transmission "multiplexes", which permit the holders to transmit digital
television broadcasting services, have been allocated. We successfully began
commercial operation of the digital terrestrial television network from an
initial 22 transmission sites on November 15, 1998. Australia, France, Germany,
Japan, Spain and Sweden are expected to be the next countries to introduce
digital terrestrial television, followed by other European nations and later by
developing countries. Many countries are expected to start to establish digital
services within the next five years. The shift to digital transmission will
require network design, development and engineering services and the
significant enhancement of existing broadcast transmission infrastructure,
including new transmission and monitoring equipment and the modification,
strengthening and construction of towers (including over 1,000 tall towers in
the United States). In addition, state-run broadcast transmission networks are
continuing to be privatized throughout the world.     
   
    We expect these trends to continue around the world in both the wireless
communications and broadcasting industries. We believe that the next logical
step in the outsourcing of infrastructure by     
 
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<PAGE>
 
   
wireless carriers and broadcasters will be the outsourcing of the operation of
their towers and transmission networks, including the transmission of their
signals, in much the same way as the BBC has done with its transmission
network. This outsourcing will allow carriers to realize additional operating
and capital efficiencies and to focus on management of their customer bases and
expansion of their service offerings. Management believes that such carriers
will only entrust the transmission of their signals to those infrastructure
providers, such as us, that have the ability to manage towers and transmission
networks and a proven track record of providing end-to-end services to the
wireless communications and broadcasting industries.     
 
Development of the Tower Industry
 
    United States. The U.S. wireless communications industry was transformed in
the 1970s through the issuance of licenses by the FCC to provide high quality
communications services to vehicle-mounted and hand-held portable telephones,
pagers and other devices. The licensees built and began operating wireless
networks that were supported by communication sites, transmission equipment and
other infrastructure. In the early 1980s, the number of towers began to expand
significantly with the development of more advanced wireless communications
systems, particularly cellular and paging. Nevertheless, as additional towers
were built by the wireless carriers, they often were built for a single purpose
rather than as multiple tenant towers. Further, these towers were generally
owned and maintained by carriers and were treated as corporate cost centers
operated primarily for the purpose of transmitting or receiving such carriers'
signals.
   
    During the mid-to-late 1980s, a number of independent operators of towers
began to emerge. These independent tower operators focused on owning and
managing towers with multiple tenants by adding lessees to existing and
reconstructed towers. We believe the majority of these operators were small
business owners with a small number of local towers and few services other than
site rental. In the last five years, however, several larger independent tower
operators have emerged as demand for wireless services has continued to grow
and as additional high frequency licenses have been awarded for new wireless
services (including personal communications services, narrowband paging and
wireless local loop), each requiring networks with extensive tower
infrastructure. These independent tower operators have sought to acquire
smaller operators as well as suitable clusters of towers formerly owned by
carriers and broadcasters in order to establish regional and national "tower
footprints". Carriers expanding or building a network in a geographic area
generally seek to lease space for antennas from a tower company whose
footprints comprise strategically located clusters of towers and other
communication sites in that area to efficiently and effectively establish
service coverage in a given market.     
 
    Today, towers are owned by a variety of companies, including wireless
carriers, local and long distance telecommunications companies, broadcasting
companies, independent tower operators, utilities and railroad companies.
Despite the increasing demand for towers, the tower industry in the United
States remains highly fragmented, with only a few independent tower operators
owning a large number of towers. The pace of consolidation has begun to
accelerate, however, as the larger independent operators continue to acquire
small local operators and purchase towers from wireless communications
companies. In addition, wireless carriers are building out new, or filling in
existing, tower footprints for new and existing wireless services. Independent
operators have also expanded into a number of associated network and
communication site services, including the design of communication sites and
networks, the selection and acquisition of tower and rooftop sites (including
the resolution of zoning and permitting issues) and the construction of towers.
Previously, carriers typically handled such services through in-house
departments, and local nonintegrated service contractors focused on specific
segments such as radio frequency engineering and site acquisition.
 
    Broadcast towers in the United States have typically been owned and
operated on a fragmented basis. Typically, each network affiliate in each major
market owns and operates its own
 
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<PAGE>
 
television broadcasting tower. Local stations often have co-located their
transmission equipment on these towers. Radio broadcast towers have also
typically been erected by each station in a given market. Both television and
radio broadcast towers have generally been constructed only for a single user
and would require substantial strengthening to house new digital transmission
equipment or other analog transmission equipment. As a result, similar to
wireless communications towers, such towers historically have been treated as
corporate cost centers operated primarily for the purpose of transmitting such
broadcasters' signals.
   
    United Kingdom. The first towers in the United Kingdom were built for the
BBC's medium frequency radio services. Additional towers were built from the
1940s on for transmission of evolving radio and television technologies and
services. The size and structure of towers varies widely due to location,
antenna requirements and wind loading. Towers built primarily for broadcast
transmission are often able to carry wireless communications antennas. Those
that are currently incapable of doing so can be strengthened or replaced.     
   
    Since 1982, the growth of wireless communications in the United Kingdom has
led to significant expansion in the number of towers. Historically, there have
been four major wireless carriers in the United Kingdom, each of which, in
general, built towers for its own use, rather than as multiple tenant owners.
These towers are owned and maintained by such carriers and, as in the United
States, were treated as corporate cost centers operated primarily for the
purpose of transmitting or receiving their signals. With the smaller geographic
size of the United Kingdom, as compared to the United States, these carriers
typically constructed their tower footprint to provide national coverage. As a
result of those national footprints, independent tower owners have not
developed as they have in the United States. In addition to wireless
communications providers, towers in the United Kingdom are owned by a variety
of companies, such as telecommunications companies, utilities and railroad
companies.     
   
    Today, tower owners are upgrading their networks to provide more capacity
and better service to their customers, while new entrants to the wireless
communications market have sought to acquire rapid access to networks that
provide national coverage. With the significant costs associated with the
approval process for, and the construction of, new towers, and the significant
capital requirements associated with ownership of tower infrastructure,
wireless carriers have begun to look to third party tower owners to co-locate
their antennas on existing towers, to build, own and operate new towers and to
acquire such carriers' portfolios of existing towers.     
 
Characteristics of the Tower Industry
   
    Management believes that, in addition to the favorable growth and
outsourcing trends in the wireless communications and broadcasting industries
and high barriers to entry as a result of regulatory and local zoning
restrictions associated with new tower sites, tower operators benefit from
several favorable characteristics. The ability of tower operators to provide
antenna sites to customers on multiple tenant towers provides them with
diversification against the specific technology, product and market risks
typically faced by any individual carrier. The emergence of new technologies,
carriers, products and markets may allow independent tower operators to further
diversify against such risks. In addition, tower operators face increased "not-
in-my-backyard" sentiment by communities and municipalities, which is reducing
the number of opportunities for new towers to be built and driving the trend
toward co-location on multiple tenant towers.     
   
    We believe that independent tower operators also benefit from the
contractual nature of the site rental business and the predictability and
stability of monthly, recurring revenues. In addition, the site rental business
has low variable costs and significant operating leverage. Towers generally are
fixed cost assets with minimal variable costs associated with additional
tenants. A tower operator can generally expect to experience increasing
operating margins when new tenants are added to existing towers.     
 
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<PAGE>
 
   
    The site rental business typically experiences low tenant churn as a result
of the high costs that would be incurred by a wireless carrier were it to
relocate an antenna to another site and consequently be forced to re-engineer
its network. Moving a single antenna may alter the pre-engineered maximum
signal coverage, requiring a reconfigured network at significant cost to
maintain the same coverage. Similarly, a television or FM broadcaster would
incur significant costs were it to relocate a transmitter because, in order to
avoid interruption of its transmissions, it would be necessary for the
broadcaster to install and commence operations of a second broadcast site prior
to ceasing signal transmission at the first site. In addition, regulatory
problems associated with licensing the location of the new antenna with the
FCC, in the United States, or being licensed for the location by the
Radiocommunications Agency in the United Kingdom, may arise if the new location
is at the edge of the wireless carrier's coverage area and if there is a
possible adverse impact on other carriers. Municipal approvals are becoming
increasingly difficult to obtain and may also affect the carrier's decision to
relocate. The costs associated with network reconfiguration and FCC,
Radiocommunications Agency and municipal approval and the time required to
complete these activities may not be justified by any potential savings in
reduced site rental expense.     
 
Trends in the Wireless Communications and Broadcasting Industries
   
    Our existing and future business opportunities are affected by the ongoing
trends within the two major industries we serve, namely the wireless
communications industry and the radio and television broadcasting industry.
Each of these industries is currently experiencing a period of significant
change that we believe is creating an increasing demand for communication sites
and related infrastructure and network support services.     
 
Wireless Communications
   
    The wireless communications industry now provides a broad range of
services, including cellular, personal communications services, paging and
specialized mobile radio. The industry has benefitted in recent years from
increasing demand for its services, and industry experts expect this demand to
continue to increase.     
   
    We believe that more communication sites will be required in the future to
accommodate the expected increase in demand for wireless communications
services. Further, we see additional opportunities with the development of
higher frequency technologies (such as personal communications services), which
have a reduced cell range as a result of signal propagation characteristics
that require a more dense network of towers. In addition, network services may
be required to service the network build-outs of new carriers and the network
upgrades and expansion of existing carriers.     
   
    In addition to the increasing demand for wireless services and the need to
develop and expand wireless communications networks, we believe that other
trends influencing the wireless communication industry have important
implications for independent tower operators. In order to speed new network
deployment or expansion and generate efficiencies, carriers are increasingly
co-locating transmission equipment with that of other network operators. The
trend towards co-location has been furthered by the "not-in-my-backyard"
arguments generated by local zoning/planning authorities in opposition to the
proliferation of towers. Further, the number of competitors in wireless
communications is increasing due to the auction of new spectra and the
deployment of new technologies. In this increasingly competitive environment,
many carriers are dedicating their capital and operations primarily to those
activities that directly contribute to subscriber growth, such as marketing and
distribution. These carriers, therefore, have sought to reduce costs and
increase efficiency through the outsourcing of infrastructure network functions
such as communication site ownership, construction, operation and maintenance.
Further, we believe that these carriers are beginning to seek to move their
tower portfolios off their balance sheets through sales to, or joint     
 
                                       63
<PAGE>
 
   
ventures with, experienced tower operators who have the proven capability to
provide comprehensive services to the wireless communications industry.     
   
    United States. Current emerging wireless communications systems, such as
personal communications services and specialized mobile radio, represent an
immediate and sizable market for independent tower operators and network
services providers as carriers build out large nationwide and regional
networks. While several personal communications services and specialized mobile
radio carriers have already built limited networks in certain markets, these
carriers still need to fill in "dead zones" and expand geographic coverage. The
Cellular Telecommunications Industry Association estimates that, as of June
1998, there were 57,674 antenna sites in the United States. The Personal
Communications Industry Association estimates that the wireless communications
industry will construct at least 100,000 new antenna sites over the next 10
years. As a result of advances in digital technology, specialized mobile radio
operators, including Nextel, have also begun to design and deploy digital
mobile telecommunications networks in competition with cellular carriers. In
particular response to the increased competition, cellular operators are re-
engineering their networks by increasing the number of sites, locating sites
within a smaller radius, filling in "dead zones" and converting from analog to
digital cellular service in order to manage subscriber growth, extend
geographic coverage and provide competitive services. The demand for
communication sites is also being stimulated by the development of new paging
applications, such as e-mail and voicemail notification and two-way paging, as
well as other wireless data applications. In addition, as wireless
communications networks expand and new networks are deployed, we anticipate
that demand for microwave transmission facilities that provide "backhaul" of
traffic between communications sites to or from a central switching facility
will also increase.     
   
    Licenses are also being awarded, and technologies are being developed, for
numerous new wireless applications that will require networks of communication
sites. Future potential applications include those that will be deployed by the
winners of licenses auctioned in February and March 1998 for local multi-point
distribution services, including wireless local loop, wireless cable
television, wireless data and wireless Internet access, as well as forthcoming
auctions for personal communications services and local multi-point
distribution services. Radio spectrum required for these technologies has, in
many cases, already been awarded and licensees have begun to build out and
offer services through new wireless systems. Examples of these systems include
local loop networks operated by WinStar and Teligent, wireless cable networks
operated by companies such as Cellular Vision and CAI Wireless, and data
networks being constructed and operated by RAM Mobile Data, MTEL and Ardis.
       
    United Kingdom. As in the United States, the development of newer wireless
communications technologies, such as personal communications services and
digital terrestrial trunked radio, provides tower operators with immediate
opportunities for site rental and new tower build out. The four existing
national GSM/personal communications services carriers continue to fill in
"dead zones" and add capacity to their networks. Also, the carrier that is
using the terrestrial trunked radio standard, which is similar to GSM and has
been adopted throughout Europe, is deploying a network across the United
Kingdom. The United Kingdom's newly-licensed wireless local loop operators have
the potential to be important site rental customers. Wireless local loop
operators provide telephony services that are comparable to the range and
quality of services delivered over the fixed wire networks. This technology is
being rapidly deployed as a low-cost alternative to fixed networks. To date, a
total of seven spectrum licenses have been awarded to companies planning to
deploy wireless loop systems. In addition, the deployment of a new national
digital PMR system (using the terrestrial trunked radio standard) for the use
of the U.K. emergency services and the announced licensing in early 1999 by the
U.K. Government of Universal mobile telecommunications service networks, which
will be the third generation of cellular, should create additional demand for
antenna space and tower sites.     
 
                                       64
<PAGE>
 
Radio and Television Broadcasting
   
    General. There are currently three main transmission delivery methods for
television and radio broadcasts: terrestrial, direct-to-home satellite and
cable. Terrestrial technology, the most common delivery method in the United
States, the United Kingdom and many other countries, relies on signal
transmission by wireless telegraphy from a network of ground-based transmitters
for direct reception by viewers or listeners through an aerial system.
Satellite signals are transmitted to satellites that then beam the signal over
a target area (satellite footprint) for reception by a customer's satellite
dish. A satellite customer must either purchase or rent a dish and a
receiver/decoder and pay subscription fees to the relevant provider. A cable
television customer typically rents a receiver/decoder and pays a subscription
fee to receive services that are distributed to the home through co-axial or
fiber optic cable.     
 
    Until the 1990s, all three delivery methods used analog technology, which
remains the most widespread technology in use today. In the early 1990s,
digital technology was developed for radio and television broadcasting and has
begun to be introduced for the transmission of radio and television signals.
Digital transmission is now possible by terrestrial, satellite and cable
methods.
 
    Digital technology allows a number of signals to be compressed and
interleaved, using a technical process called "multiplexing", before the
combined signal is transmitted within a single frequency channel. This process
makes the signal more robust, allowing the use of parts of the spectrum
unavailable to analog. A greater quantity of audio-visual information can be
transmitted with the same amount of frequency spectrum allowing higher
resolution or multiple channels to be broadcast. At the point of reception, the
compression and interleaving are decoded and individual signals recovered.
 
    Some of the principal advantages of digital compared to analog transmission
include:
 
  (1) greater number, choice and flexibility of broadcasting services
     offered;
 
  (2) scope for greater interactivity on the part of viewers and listeners;
 
  (3) greater capacity for pay-television (subscription and pay-per-view) as
     well as free-to-air services; and
 
  (4) enhanced picture quality and sound. The development and timing of
     implementation of digital transmission technology to the general public
     is a function of several factors, including technological advancement,
     cost of equipment and conversion process, quality improvement of visual
     and sound transmission and demand for terrestrial bandwidth. The
     transition to digital transmission will involve additional costs to
     viewers and program and transmission service providers. Viewers will
     require additional equipment such as set-top boxes or digital
     televisions. Program providers have begun to re-equip their studios and
     production facilities with digital technology.
 
    United States. Prior to the introduction of digital transmission, the U.S.
broadcasting industry had generally been a mature one in terms of demand for
transmission tower capacity, although even then opportunities existed for
independent tower operators to purchase transmission networks, manage them on
behalf of broadcasters under long-term contracts and lease space on
broadcasting towers to wireless carriers.
   
    The FCC-mandated introduction of digital television broadcasting will
provide new opportunities for independent tower operators. The conversion of
broadcasting systems from analog to digital technology will require a
substantial number of new towers to be constructed to accommodate the new
systems and analog equipment displaced from existing towers. Even with digital
terrestrial television transmissions, television station owners will continue
to broadcast the existing analog signals for a number of years. Broadcasters
that own their own tower infrastructure may elect to     
 
                                       65
<PAGE>
 
   
remove third-party tenants from their towers to make room for their own digital
terrestrial television broadcasting equipment. These displaced tenants, and
tower owners that are unable to remove existing third party tenants from their
towers, will require new towers to accommodate their transmission equipment.
The National Association of Broadcasters projects that by the year 2010
approximately 1,400 tall towers will be required to be built, strengthened or
modified to support digital terrestrial television broadcasting, with 200
towers required in the top 50 markets within the next five years. Further,
because of the need for broadcasters to purchase new transmission equipment to
deploy digital terrestrial television, they will have fewer resources to devote
to the build out of new tower infrastructure. We believe that these
circumstances, along with the relative scarcity of suitable sites and prevalent
"not-in-my-backyard" attitudes, will allow experienced tower operators to build
and operate multiple tenant broadcast towers to transmit digital terrestrial
television broadcasting signals. These towers will also be attractive sites for
the distribution of FM radio broadcasts.     
 
    United Kingdom. The broadcasting industry in the United Kingdom has
generally been a mature one in terms of demand for transmission tower capacity.
Existing towers provide almost universal coverage for analog transmission,
which remains the primary mode of transmission for television and radio
programs in the United Kingdom. Most of the BBC's radio services, three
Independent National Radio services and many local services are broadcast by
analog terrestrial means. Some radio services are also available by satellite
and cable for reception on fixed installations, but not portable or mobile
sets.
   
    Digital television services in the United Kingdom were launched in 1998
from terrestrial transmitters and satellite. The Broadcasting Act of 1996 sets
out a framework for the licensing of digital terrestrial multiplexes and an
industry interest group has been established to coordinate the establishment of
digital television in the United Kingdom. The British Government has allocated
six multiplexes for digital terrestrial transmitters: two and one-half of these
multiplexes were reserved for the BBC, ITV, Channel 4, S4C and Channel 5, three
were awarded to ONdigital (which is a joint venture of Carlton Communications
PLC and Granada Group PLC) and the other one-half was awarded to S4C Digital
Network. We have been awarded the digital transmission contract for the four
multiplexes held by the BBC and ONdigital, while NTL has been awarded the
digital transmission contract for the other two multiplexes.     
   
    Build-out of digital terrestrial transmission equipment in the United
Kingdom is being based on existing analog terrestrial infrastructure, including
transmission sites and towers. In the initial phase of the deployment of
digital terrestrial transmission equipment, 81 analog transmission sites and
towers will be upgraded with new transmitters and associated systems required
to support digital terrestrial broadcasting. Digital broadcasts from these
sites are expected to reach approximately 90% of the U.K. population. It is
expected that additional sites will continue to be upgraded until the "vast
majority" of viewers can receive digital broadcasts.     
 
    While no formal timetable has been set for the discontinuation of analog
terrestrial television broadcasting, the British Government has announced its
intention to review, by 2002, the timing of analog "switch-off". When analog
television transmission ceases, large amounts of frequency spectrum will be
released. New uses for this spectrum have not yet been defined but applications
are likely to include other digital broadcasting applications and mobile
communications. The spectrum is inherently suitable for terrestrial
transmission, so it is likely that existing towers will be used to provide many
of the new services.
   
    In September 1995, the BBC launched the United Kingdom's first digital
radio service, which is now broadcast to approximately 60% of the U.K.
population from 29 transmission sites. Independent local radio licenses for
additional digital radio multiplexes are expected to be issued by the end of
1999.     
 
                                       66
<PAGE>
 
   
    To date, existing broadcast towers have been used as transmission sites for
the BBC's digital radio service, and it is anticipated that existing towers
also will be used for the independent services, often sharing the antennas used
for the BBC's digital radio service. While digital radio has the advantage of
using a single frequency network, which enables expanded geographic coverage as
compared with the multiple frequency networks used for analog radio, to
replicate the coverage of analog radio it will be necessary to broadcast
digital radio from more sites than at present. Although detailed planning has
not yet begun, it is expected that existing towers will provide the necessary
sites. As with digital terrestrial television, we believe that ownership of key
broadcasting sites across the United Kingdom will allow an experienced operator
to provide the infrastructure necessary to accommodate the growth in digital
radio at minimum cost.     
 
                                       67
<PAGE>
 
                                    BUSINESS
   
    We are a leading owner and operator of wireless communications and
broadcast transmission infrastructure. After giving effect to the completion of
the recent and proposed transactions, as of December 31, 1998, we owned or
managed 6,137 towers, including 4,451 towers in the United States and Puerto
Rico and 1,686 towers in the United Kingdom. Our customers currently include
many of the world's major wireless communications and broadcast companies,
including Bell Atlantic Mobile, BellSouth, AT&T Wireless, Nextel and the BBC.
    
    Our strategy is to use our leading domestic and international position to
capture the growing consolidation and build-out opportunities created by:
     
  .  the outsourcing of ownership and management of towers by major wireless
     carriers;     
 
  .  the need for existing wireless carriers to expand coverage and improve
     capacity;
 
  .  the additional demand for towers created by new entrants into the
     wireless communications industry;
 
  .  the privatization of state-run broadcast transmission networks; and
 
  .  the introduction of new digital broadcast transmission technology and
     wireless technologies.
   
    Our two main businesses are leasing antenna space on wireless and broadcast
multi-tenant towers and operating broadcast transmission networks. We also
provide complementary services to our customers, including network design,
radio frequency engineering, site acquisition, site development and
construction, antenna installation and network management and maintenance. We
believe that our full service capabilities are a key competitive advantage in
forming strategic partnerships to acquire large wireless and broadcast tower
portfolios and in winning contracts for new tower construction.     
   
    Our primary business in the United States is the leasing of antenna space
to wireless carriers. After completion of the recent and proposed transactions
we describe in this prospectus, we will have concentrations of towers, or tower
clusters, in 26 of the 50 largest U.S. metropolitan areas, including 23
metropolitan areas east of the Mississippi river. We believe that by owning and
managing large tower clusters we are able to offer customers the ability to
fulfill rapidly and efficiently their network expansion plans across particular
markets or regions. We have entered into agreements with Bell Atlantic and
BellSouth that will allow us to control and operate substantially all the
towers in their 850 MHz networks.     
   
    Our primary business in the United Kingdom is the operation of television
and radio broadcast transmission networks. Following the 1997 acquisition of
the BBC's broadcast and tower infrastructure, we were awarded long-term
contracts to provide the BBC and other broadcasters analog and digital
transmission services. We also lease antenna space to wireless operators in the
United Kingdom on the towers we acquired from the BBC and from various wireless
carriers. We believe that these broadcast towers are uniquely situated in
locations that wireless carriers seeking to lease antenna space find
particularly desirable.     
   
    We believe our towers are attractive to a diverse range of wireless
communications industries, including personal communications services,
cellular, ESMR, SMR, paging, and fixed microwave, as well as radio and
television broadcasting. In the United States our major customers include AT&T
Wireless, Aerial, Bell Atlantic, BellSouth, Motorola, Nextel, PageNet and
Sprint PCS. In the United Kingdom our major customers include the BBC, Cellnet,
Dolphin, NTL, ONdigital, One2One, Orange, Virgin Radio and Vodafone.     
 
                                       68
<PAGE>
 
   
    We have embarked on a major construction program for our customers to
enhance our tower portfolios. In 1998, we constructed 231 towers at an
aggregate cost of approximately $46.0 million, and had begun construction of an
additional 72 towers as of December 31, 1998. In 1999, we plan to construct
between 800 and 1,100 towers at an estimated aggregate cost between $150.0
million and $200.0 million for wireless carriers such as Bell Atlantic,
BellSouth and Nextel. The actual number of towers built may be outside that
range depending on acquisition opportunities and potential build-to-suit
contracts from large wireless carriers. In addition, we were selected to build
and operate the world's first digital terrestrial television system in the
United Kingdom based on our broadcast engineering expertise.     
 
Growth Strategy
   
    Our objective is to become the premier global provider of wireless
communications and broadcast transmission infrastructure and related services.
Our experience in establishing and expanding our existing tower portfolios, our
experience in owning and operating both analog and digital transmission
networks, our significant relationships with wireless carriers and broadcasters
and our ability to offer customers our in-house technical and operational
expertise, uniquely position us to capitalize on global growth opportunities.
The key elements of our business strategy are to:     
     
  .  Maximize Utilization of Tower Capacity. We are seeking to take advantage
     of the substantial operating leverage of our site rental business by
     increasing the number of antenna leases on our owned and managed
     communications sites. We believe that many of our towers have
     significant capacity available for additional antenna space rental and
     that increased utilization of our tower capacity can be achieved at low
     incremental cost. For example, prior to our purchase of the BBC's
     broadcast transmission network in 1997, the rental of available antenna
     capacity on the BBC's premier tower sites was not actively marketed to
     third parties. We believe there is substantial demand for such capacity.
     In addition, we believe that the extra capacity on our tower portfolios
     in the United States and the United Kingdom will be highly desirable to
     new entrants into the wireless communications industry. Such carriers
     are able to launch service quickly and relatively inexpensively by
     designing the deployment of their networks based on our attractive
     existing tower portfolios. Further, we intend to selectively build and
     acquire additional towers to improve the coverage of our existing tower
     portfolios to further increase their attractiveness. We intend to use
     targeted sales and marketing techniques to increase utilization of and
     investment return on our existing, newly constructed and acquired
     towers.     
     
  .  Leverage Expertise of U.S. and U.K. Personnel to Capture Global Growth
     Opportunities. We are seeking to leverage the skills of our personnel in
     the United States and the United Kingdom. We believe that our ability to
     manage networks, including the transmission of signals, will be an
     important competitive advantage in our pursuit of global growth
     opportunities, as evidenced by our BBC, One2One, Bell Atlantic,
     BellSouth and Powertel transactions. With our wireless communications
     and broadcast transmission network design and radio frequency
     engineering expertise, we are well positioned (1) to partner with major
     wireless carriers to assume ownership of their existing towers, (2) to
     provide new tower construction for wireless carriers and broadcasters
     and (3) to acquire existing broadcast transmission networks that are
     being privatized around the world.     
     
  .  Partner with Wireless Carriers to Assume Ownership of their Existing
     Towers. In addition to the proposed joint venture with Bell Atlantic and
     the transaction with BellSouth, we are continuing to seek to partner
     with other major wireless carriers to assume ownership of their existing
     towers directly or through joint ventures or control their towers
     through contractual arrangements. We believe the primary criteria of
     such carriers in selecting a company to own and operate their wireless
     communications infrastructure will be the company's perceived capability
     to maintain the integrity of their networks, including their     
 
                                       69
<PAGE>
 
     transmission signals. Therefore, we believe that those companies with a
     proven track record of providing end-to-end services will be best
     positioned to successfully acquire access to such wireless
     communications infrastructure. We believe that similar opportunities
     will arise globally as the wireless communications industry further
     expands.
     
  .  Provide Build-to-Suit Towers for Wireless Carriers and Broadcasters. As
     wireless carriers continue to expand and fill-in their service areas,
     they will require additional communications sites and will have to build
     new towers where multi-tenant towers are not available. Similarly, the
     introduction of digital terrestrial television broadcasting in the
     United States will require the construction of new broadcast towers to
     accommodate new digital transmission equipment and analog transmission
     equipment displaced from existing towers. We are aggressively pursuing
     these build-to-suit opportunities to build new towers for wireless
     carriers, leveraging on our ability to offer end-to-end services.     
     
  .  Acquire Existing Broadcast Transmission Networks. In 1997, our U.K.
     subsidiary, CTI, successfully acquired the privatized domestic broadcast
     transmission network of the BBC. In addition, we are implementing the
     roll-out of digital television transmission services throughout the
     United Kingdom. As a result of this experience, we are well positioned
     to acquire other state-owned analog and digital broadcast transmission
     networks globally when opportunities arise. These state-owned broadcast
     transmission networks typically enjoy premier sites giving an acquirer
     the ability to offer unused antenna capacity to new and existing radio
     and television broadcasters and wireless carriers, as well as to install
     new technologies such as digital terrestrial transmission services. In
     addition, our experience in broadcast transmission services allows us to
     consider, when attractive opportunities arise, acquiring wireless
     transmission networks as well as the acquisition of associated wireless
     communications infrastructure. We are currently pursuing international
     acquisition and privatization opportunities.     
     
  .  Continue to Decentralize Management Functions. In order to better manage
     our efforts to add tenants to our towers and our new tower build
     programs, and in anticipation of the continued growth of our tower
     portfolios throughout the United States, we have begun and plan to
     continue decentralizing some management and operational functions. To
     that end, in addition to our Pittsburgh operating headquarters and
     regional office, we have opened and staffed five regional offices,
     including Houston, Louisville, Phoenix, Albany and Puerto Rico. Upon
     consummation of the recent and proposed transactions we plan to open 10
     additional regional offices, five in connection with the joint venture
     with Bell Atlantic, three in connection with the BellSouth transaction
     and two in connection with the Powertel acquisition. The principal
     responsibilities of these offices are to manage the leasing of tower
     space on a regional basis through a dedicated local sales force, to
     maintain the towers already located in the region and to implement our
     commitments to build new towers for wireless carriers in the area. We
     believe that by moving a significant amount of our operating personnel
     to regional offices we will be better able to strengthen our
     relationship with regional carriers, serve our customers more
     effectively and identify additional opportunities to build new towers
     for local and regional carriers.     
 
                                      70
<PAGE>
 
The Company
   
    CCIC is a holding company that conducts all of its business through its
subsidiaries. CCIC's two principal operating subsidiaries are Crown
Communication, through which it conducts its U.S. operations, and CTI, through
which it conducts its U.K. operations. The following table indicates, as of
December 31, 1998, after giving pro forma effect to the 1999 Transactions, the
geographic concentration of our 6,137 owned and managed towers and 132 revenue
producing rooftop sites:     
 
                         U.S. Towers and Rooftop Sites
 
<TABLE>   
<CAPTION>
                                                                          % of
                                                                 % of    Company
                       CCI BAM JV    BellSouth Powertel Total U.S. Total  Total
                       --- ------    --------- -------- ----- ---------- -------
<S>                    <C> <C>       <C>       <C>      <C>   <C>        <C>
Towers:
  Georgia............. --     22         341     151      514    11.3%     8.2%
  Florida.............   3   --          434      76      513    11.3      8.2
  Alabama............. --      9         179     188      376     8.3      6.0
  Pennsylvania........ 219   218(a)      --      --       332     7.3      5.3
  Tennessee...........   1     1         202     113      317     6.9      5.1
  Louisiana...........  51    13         162     --       226     5.0      3.6
  Mississippi.........  21     8         125      62      216     4.8      3.5
  Texas............... 167    43         --      --       210     4.6      3.4
  Kentucky............ --    --          191     --       191     4.2      3.1
  South Carolina......  12   149          10      19      190     4.2      3.0
  Indiana............. --    --          183     --       183     4.0      2.9
  North Carolina......  11   141          20     --       172     3.8      2.7
  Arizona.............  12   159         --      --       171     3.8      2.7
  New Jersey..........   1   150         --      --       151     3.3      2.4
  New York............ --    130         --      --       130     2.9      2.1
  Maryland............ --    115         --      --       115     2.5      1.8
  Massachusetts....... --     80         --      --        80     1.8      1.3
  New Mexico..........  34    37         --      --        71     1.6      1.1
  Virginia............   5    66         --      --        71     1.4      1.1
  Connecticut......... --     37         --      --        37       *        *
  Ohio................  26   --          --      --        26       *        *
  New Hampshire....... --     26         --      --        26       *        *
  Delaware............ --     25         --      --        25       *        *
  West Virginia.......  17    14(b)      --      --        19       *        *
  Puerto Rico.........  14   --          --      --        14       *        *
  Rhode Island........ --     14         --      --        14       *        *
  All Others..........  15    12           3      41       61     1.3      1.0
                       --- -----       -----     ---    -----   -----     ----
Rooftops(d)...........  78   --          --      --        78     1.7      1.2
                       --- -----       -----     ---    -----   -----     ----
Total................. 687 1,459(c)    1,850     650    4,529   100.0%    72.2%
                       === =====       =====     ===    =====   =====     ====
</TABLE>    
- --------
(a) Includes 105 towers we currently manage.
(b) Includes 12 towers we currently manage.
(c) Includes 117 towers we currently manage.
(d) We manage an additional 1,286 rooftop sites throughout the United States
    that do not currently produce revenue but are available for leasing to our
    customers.
 *  Less than 1%.
 
                                       71
<PAGE>
 
                         U.K. Towers and Rooftop Sites
 
<TABLE>   
<CAPTION>
                                                                          % of
                                                                 % of    Company
                                            CTI One2One Total U.K. Total  Total
                                            --- ------- ----- ---------- -------
<S>                                         <C> <C>     <C>   <C>        <C>
Towers:
  England.................................. 492   767   1,259    72.4%    20.1%
  Wales.................................... 134    39     173     9.9      2.8
  Scotland................................. 151    15     166     9.5      2.6
  Northern Ireland.........................  88   --       88     5.1      1.4
                                            ---   ---   -----   -----     ----
Rooftops...................................  54   --       54     3.1       *
                                            ---   ---   -----   -----     ----
Total...................................... 919   821   1,740   100.0%    27.8%
                                            ===   ===   =====   =====     ====
</TABLE>    
 
U.S. Operations
 
Overview
 
 
    Our primary business focus in the United States is the leasing of antenna
space on multiple tenant towers and rooftops to a variety of wireless carriers
under long-term lease contracts. Supporting our competitive position in the
site rental business, we maintain in-house expertise in, and offer our
customers, infrastructure and network support services that include network
design and communication site selection, site acquisition, site development and
construction and antenna installation.
   
    We lease antenna space to our customers on our owned and managed towers. We
generally receive fees for installing customers' equipment and antennas on a
tower and also receive monthly rental payments from customers payable under
site rental leases that generally range in length from three to five years. Our
U.S. customers include such companies as AT&T Wireless, Aerial Communications,
AirTouch Cellular, Arch Communications, Bell Atlantic, BellSouth, Cellular One,
Federal Express, Lucent Technologies, Motorola, Nextel, Nokia, PageNet, Skytel,
Sprint PCS and TSR Wireless, as well as private network operators and various
federal and local government agencies, such as the FBI, the IRS and the U.S.
Postal Service.     
   
    At December 31, 1998, without giving effect to the 1999 Transactions, we
owned or managed 609 towers and 78 rooftop sites in the United States and
Puerto Rico. These towers and rooftop sites are located in western Pennsylvania
(primarily in and around the greater Pittsburgh area), in the southwestern
United States (primarily in western Texas), across Puerto Rico and along I-95
in North Carolina and South Carolina.     
   
    The joint venture with Bell Atlantic controls and operates 1,459 towers.
These towers represent substantially all the towers in Bell Atlantic's 850 MHz
wireless network in the eastern and southwestern United States and provide
coverage of 11 of the top 50 U.S. metropolitan areas including New York,
Philadelphia, Boston, Washington, D.C. and Phoenix. A substantial majority of
these towers are over 100 feet tall and can accommodate multiple tenants.     
   
    After consummation of the BellSouth transaction, we will control and
operate an additional 1,850 towers. These towers represent substantially all
the towers in BellSouth's 850 MHZ wireless network in the southeastern and
midwestern United States and provide coverage of 12 of the top 50 U.S.
metropolitan areas, including Miami, Atlanta, Tampa, Nashville and
Indianapolis. A substantial majority of these towers are over 100 feet tall and
can accommodate multiple tenants.     
   
    Upon completion of the Powertel acquisition, we will own and operate an
additional 650 towers. These towers represent substantially all of Powertel's
owned towers in its 1.9 GHz wireless network in the southeastern and midwestern
United States. Approximately 90% of these towers are clustered     
 
                                       72
<PAGE>
 
   
in seven southeastern states providing coverage of such metropolitan areas as
Atlanta, Birmingham, Jacksonville, Memphis and Louisville, and a number of
major connecting highway corridors in the Southeast. These towers are
complementary to BellSouth's 850 MHZ tower portfolio in the Southeast and have
minimal coverage overlap. Substantially all of these towers are over 100 feet
tall, were built within the last three years and can accommodate multiple
tenants.     
   
    We are actively seeking to enter into arrangements with other major
wireless carriers and independent tower operators to acquire additional tower
footprints. We believe that, like Bell Atlantic, BellSouth and Powertel, other
wireless carriers will seek to enter into contractual arrangements with
independent tower carriers, such as us, for the ownership or control of their
tower footprints.     
   
    We also plan to leverage our network design expertise to construct new
towers. We plan to build towers in areas where carriers' signals fail to
transmit in their coverage area. The areas, commonly known as "dead zones", are
attractive tower locations. When population density and perceived demand are
such that we believe the economics of constructing such towers are justified,
we build towers that can accommodate multiple tenants. The multiple tenant
design of these towers obviates the need for expensive and time consuming
modifications to upgrade undersized towers, saving critical capital and time
for carriers facing time-to-market constraints. The towers are also designed to
easily add additional customers, and the equipment shelters are built to
accommodate another floor for new equipment and air conditioning units when
additional capacity is needed. The tower site is zoned for multiple carriers at
the time the tower is constructed to allow new carriers to quickly utilize the
site. In addition, the towers, equipment shelters and site compounds are
engineered to protect and maintain the structural integrity of the site.     
   
    Our existing contracts for construction of new towers include an agreement
with Nextel, under which we have already constructed 67 sites and have an
option to construct up to 96 additional sites. In connection with the joint
venture, Bell Atlantic and the joint venture entered into a master build-to-
suit agreement pursuant to which the joint venture will build and own the next
500 towers to be built for Bell Atlantic's wireless communications business
over the next five years. Further, we have agreed to enter into a similar
agreement with BellSouth, as part of the BellSouth transaction, to construct at
least 500 towers on behalf of BellSouth in the region covered by that
transaction over the next five years. See "The 1999 Transactions--Bell Atlantic
Joint Venture--Build-to-Suit Agreement" and "--Proposed BellSouth Transaction--
Build-to-Suit Agreement".     
 
Site Rental
   
    In the United States, we rent antenna space on our owned and managed towers
and rooftops to a variety of carriers operating cellular, personal
communications services, specialized mobile radio, ESMR, paging and other
networks.     
 
    Tower Site Rental. We lease space to our customers on our owned and managed
towers. We generally receive fees for installing customers' equipment and
antennas on a tower (as provided in our network services programs) and also
receive monthly rental payments from customers payable under site leases. In
the United States, the majority of our outstanding customer leases, and the new
leases typically entered into by us, have original terms of five years (with
three or four optional renewal periods of five years each) and provide for
annual price increases based on the Consumer Price Index.
 
    We also provide a range of site maintenance services in order to support
and enhance our site rental business. We believe that by offering services such
as antenna, base station and tower maintenance and security monitoring, we are
able to offer quality services to retain our existing customers and attract
future customers to our communication sites. We were the first site
 
                                       73
<PAGE>
 
   
management company in the United States selected by a major wireless carrier to
exclusively manage its tower network and market the network to other carriers
for multi-tenant use of their towers.     
   
    The following table describes, without giving effect to the 1999
Transactions, our top ten revenue producing towers in the United States and
Puerto Rico:     
 
<TABLE>
<CAPTION>
                                                                       December
                                                             Number of   1998
                                                              Tenant   Monthly
  Name                                Location   Height (ft)  Leases   Revenue
  ----                                --------   ----------- --------- --------
<S>                                 <C>          <C>         <C>       <C>
Crane.............................. Pennsylvania     450         99     $67,372
Bluebell........................... Pennsylvania     300        110      54,555
Monroeville........................ Pennsylvania     500         63      39,315
Lexington.......................... Kentucky         500         89      38,644
Sandia Crest....................... New Mexico       140         16      26,984
Greensburg......................... Pennsylvania     375         40      26,932
Cranberry.......................... Pennsylvania     400         44      26,455
Cerro de Punta..................... Puerto Rico      220         37      24,988
Beaver............................. Pennsylvania     500         43      25,360
El Yunque.......................... Puerto Rico      200         34      23,500
                                                                ---    --------
  Total.....................................................    575    $354,105
                                                                ===    ========
</TABLE>
   
    We have existing master lease agreements with AT&T Wireless, Aerial
Communications, Bell Atlantic, Nextel and Sprint PCS, among others, which
provide certain terms (including economic terms) that govern new leases entered
into by such parties during the term of their master lease agreements,
including the lease of space on towers in the Pittsburgh major trading area,
which includes greater Pittsburgh and parts of Ohio, West Virginia and western
Pennsylvania. Each of the Aerial Communications and Sprint PCS agreements has a
10-year master lease term through December 2006, with one 10-year and one five-
year renewal period. Rents are adjusted periodically based on the cumulative
Consumer Price Index. Nextel's master lease agreement with us has a 10-year
master lease term through October 2006, with two 10-year renewal options. We
have also entered into an independent contractor agreement with Nextel. The
Bell Atlantic agreement has a 25-year master lease term through December 2020.
       
    We have significant site rental opportunities arising out of our existing
agreements with Bell Atlantic and Nextel. In our existing lease agreement with
Bell Atlantic, we have exclusive leasing rights for 117 existing towers and we
currently have sublessees on 58 of these towers in the greater Pittsburgh area.
The lease agreement provides that we may sublet space on any of these towers to
another carrier subject to certain approval rights of Bell Atlantic. To date,
Bell Atlantic has never failed to approve a sublease we have proposed. Upon
consummating the joint venture, those 117 towers were among the 1,459 towers
contributed to the joint venture; however, since we maintain the right to put
sublessees on those 117 towers, revenue resulting from the addition of new
tenants on those towers will continue to be realized by us rather than the
joint venture. In connection with the Nextel Agreement, as of December 31,
1998, we have the option to own and operate up to 96 additional towers.     
   
    We also have significant site rental opportunities in connection with the
1999 Transactions. In connection with the joint venture, we entered into a
global lease under which Bell Atlantic will lease antenna space on the towers
transferred to the joint venture, as well as the towers built pursuant to the
build-to-suit agreement. In connection with the BellSouth transaction, we will
be paid a monthly site maintenance fee from BellSouth for its use of space on
the towers we control. We will also enter into a master lease agreement with
the sellers in the Powertel acquisition pursuant to which the     
 
                                       74
<PAGE>
 
   
sellers will rent space on the acquired towers. In each of these transactions,
we will be permitted to lease additional space on the towers to third parties.
See "The 1999 Transactions".     
 
    Rooftop Site Rental. We are a leading rooftop site management company in
the United States. Through our subsidiary, Spectrum, we develop new sources of
revenue for building owners by effectively managing all technical aspects of
rooftop telecommunications, including two-way radio systems, microwave
facilities, fiber optics, wireless cable, paging, rooftop infrastructure
services and optimization of equipment location. We also handle billing and
collections and all calls and questions regarding the site, totally relieving
the building's management of this responsibility. In addition to the technical
aspects of site management, we provide operational support for both wireless
carriers looking to build out their wireless networks, and building owners
seeking to out source their site rental activities. We generally enter into
management agreements with building owners and receive a percentage of the
revenues generated from the tenant license agreements.
 
Network Services
   
    We design, build and operate our own communication sites. We have developed
an in-house expertise in certain value-added services that we offer to the
wireless communications and broadcasting industries. Because we are a turn-key
provider with "end-to-end" design, construction and operating expertise, we
offer our customers the flexibility of choosing between the provision of a full
ready-to-operate network infrastructure or any of the component services
involved therein. Such services include network design and site selection, site
acquisition, site development and construction and antenna installation.     
   
    Network Design and Site Selection. We have extensive experience in network
design and engineering and site selection. While we maintain sophisticated
network design services primarily to support the location and construction of
company-owned multiple tenant towers, we do from time to time provide network
design and site selection services to carriers and other customers on a
consulting contract basis. Our network design and site selection services
provide our customers with relevant information, including recommendations
regarding location and height of towers, appropriate types of antennas,
transmission power and frequency selection and related fixed network
considerations. In 1998, we provided network design services primarily for our
own footprints and also for certain customers, including Triton Communications,
Nextel, Aerial Communications and Sprint PCS. These customers were typically
charged on a time and materials basis.     
 
    To capitalize on the growing concerns over tower proliferation, we have
developed a program called "Network Solutions" through which we will attempt to
form strategic alliances with local governments to create a single
communications network in their communities. To date our efforts have focused
on western Pennsylvania, where we have formed alliances with three
municipalities. These alliances are intended to accommodate wireless carriers
and local public safety, emergency services and municipal services groups as
part of an effort to minimize tower proliferation. By promoting towers designed
for co-location, these alliances will reduce the number of towers in
communities while serving the needs of wireless carriers and wireless
customers.
   
    Site Acquisition. In the United States, we are engaged in site acquisition
services for our own purposes and for third parties. Based on data generated in
the network design and site selection process, a "search ring", generally of a
one-mile radius, is issued to the site acquisition department for verification
of possible land purchase or lease deals within the search ring. Within each
search ring, geographic information systems specialists select the most
suitable sites, based on demographics, traffic patterns and signal
characteristics. Once a site is selected and the terms of an option to purchase
or lease the site are completed, a survey is prepared and the resulting site
plan is created. The plan is then submitted to the local zoning/planning board
for approval. If the site is approved, our construction department takes over
the process of constructing the site.     
 
                                       75
<PAGE>
 
   
    We have provided site acquisition services to several customers, including
AT&T Wireless, Aerial Communications, AirTouch Cellular, Bell Atlantic,
BellSouth, GTE Mobilnet, Nextel, Omnipoint, Pagemart, Sprint PCS and Teligent.
These customers engage us for such site acquisition services on either a fixed
price contract or a time and materials basis.     
   
    Site Development and Construction and Antenna Installation. We have
provided site development and construction and antenna installation services to
the U.S. communications industry for over 18 years. We have extensive
experience in the development and construction of tower sites and the
installation of antenna, microwave dishes and electrical and telecommunications
lines. Our site development and construction services include clearing sites,
laying foundations and electrical and telecommunications lines, and
constructing equipment shelters and towers. We have designed and built and
presently maintain tower sites for a number of our wireless communications
customers and a substantial part of our own tower network. We can provide cost-
effective and timely completion of construction projects in part because our
site development personnel are cross-trained in all areas of site development,
construction and antenna installation. A varied inventory of heavy construction
equipment and materials are maintained by us at our 45-acre equipment storage
and handling facility in Pittsburgh, which is used as a staging area for
projects in major cities in the eastern region of the United States. We
generally set prices for each site development or construction service
separately. Customers are billed for these services on a fixed price or time
and materials basis and we may negotiate fees on individual sites or for groups
of sites. We have the capability and expertise to install antenna systems for
our paging, cellular, personal communications services, specialized mobile
radio, ESMR, microwave and broadcasting customers. As this service is
performed, we use our technical expertise to ensure that there is no
interference with other tenants. We typically bill for our antenna installation
services on a fixed price basis.     
   
    Our construction management capabilities reflect our extensive experience
in the construction of networks and towers. For example, Crown Communication
was instrumental in launching networks for Sprint PCS, Nextel and Aerial
Communications in the Pittsburgh MTA. In addition, Crown Comunication supplied
these carriers with all project management and engineering services which
included antenna design and interference analyses.     
   
    In 1998, we provided site development and construction and antenna
installation services to approximately 33 customers in the United States,
including AT&T Wireless, Bell Atlantic, Nextel and Sprint PCS.     
 
Broadcast Site Rental and Services
   
    We also provide site rental and related services to customers in the
broadcasting industry in the United States. The launch of digital terrestrial
television in the United States will require significant expansion and
modification of the existing broadcast infrastructure. Because of the
significant cost involved in the construction or modification of tall towers,
along with the large capital expenditures broadcasters will incur in acquiring
digital broadcast equipment, we believe that the television broadcasting
industry, which has historically been opposed to locating their equipment on
towers with other tenants and third party ownership of broadcast
infrastructure, will seek to outsource tower ownership due to cost constraints.
See "Industry Background".     
   
    Our objective is to become a leader in the construction of the
approximately 200 tall towers expected to be built in the United States over
the next five years. We believe that our experience in providing digital
transmission services in the United Kingdom will make us an attractive provider
of broadcast services to the major networks and their affiliates. In addition,
we will seek to partner with broadcasters and major station ownership groups
that own property zoned for tall towers, but that lack sufficient resources and
expertise to build a tower. We will then attempt to locate on the tower the
transmitters of commercial broadcast television stations and high powered FM
radio stations in that market as well as wireless carriers.     
 
                                       76
<PAGE>
 
   
    Electronic news gathering systems benefit from the towers and services we
offer. The electronic news gathering trucks, often in the form of local
television station news vans with telescoping antennas on their roofs, send
live news transmission back to the studio from the scene of an important event.
Typically, these vans cannot transmit signals beyond about 25 miles. In
addition, if they are shielded from the television transmitter site, they
cannot make the connection even at close range. We have developed a repeater
system for such news gathering that can be used on many of our towers in
western Pennsylvania and expect to develop similar systems in other markets in
which we have or develop tower footprints. This system allows the van to send a
signal to one of our local towers where the signal is retransmitted back to the
television transmitter site. The retransmission of the signal from our tower to
the various television transmitter sites is done via a microwave link. We
charge the station for the electronic news gathering receiver system at the top
of our tower and also charge them for the microwave dish they place on our
tower. Our electronic news gathering customers are affiliates of the NBC, ABC,
CBS and Fox networks.     
 
    We also have employees with considerable direct construction experience and
market knowledge in the U.S. broadcasting industry, having worked with numerous
television networks around the United States, and a number of other local
broadcasting companies. We have installed master FM and television systems on
buildings across the country. We have supervised the construction and operation
of the largest master FM antenna facility in the United States and have
engineered and installed two 2,000 foot broadcast towers with master FM
antennas. We believe that this experience may help us negotiate favorable
construction contracts for both tower and rooftop sites, and to gain an
expertise in the complex issues surrounding electronic compatibility and RF
engineering.
 
Significant Contracts
   
    We have many agreements with telecommunications providers in the United
States, including leases, site management contracts and independent contractor
agreements. We currently have important contracts with, among others, Bell
Atlantic, Nextel and BellSouth. While these agreements currently are important
to us, our most significant contracts in the U.S. will result from consummation
of the recent and proposed transactions described in this prospectus. In
addition, we are party to a contract with the State of New York, which we
believe to be the first of its kind, to manage all State-owned real estate for
wireless communications purposes for the next 20 years. This contract includes
the rights to more than 16,000 structures and rooftops, tens of thousands of
miles of rights-of-way and millions of acres of State-owned land.     
 
 
                                       77
<PAGE>
 
Customers
   
    In both our site rental and network services businesses, we work with a
number of customers in a variety of businesses including cellular, personal
communications services, ESMR, paging and broadcasting. We work primarily with
large national carriers such as Bell Atlantic, BellSouth, Sprint PCS, Nextel
and AT&T Wireless. For the year ended December 31, 1998, no customer in the
United States accounted for more than 10.0% of our U.S. revenues, other than
Nextel, which accounted for approximately 12.5% of our U.S. consolidated
revenues. Nextel revenues are expected to grow as we build out Nextel
interstate corridor sites.     
 
<TABLE>
<CAPTION>
        Industry                               Selected Customers
        --------                               ------------------
   <S>                           <C>
   Cellular..................... AT&T Wireless, BAM
   PCS.......................... Sprint PCS, Western Wireless, Powertel
   Broadcasting................. Hearst Argyle Television, Trinity Broadcasting
   SMR/ESMR..................... Nextel, SMR Direct
   Governmental Agencies........ FBI, INS, Puerto Rico Police
   Private Industrial Users..... IBM, Phillips Petroleum
   Data......................... Ardis, RAM Mobile Data
   Paging....................... AirTouch, PageNet, TSR Wireless
   Utilities.................... Equitable Resources, Nevada Power
   Other........................ WinStar, Teligent
</TABLE>
 
Sales and Marketing
   
    Our sales and marketing personnel, located in our regional offices, target
carriers expanding their networks, entering new markets, bringing new
technologies to market and requiring maintenance or add-on business. All types
of wireless carriers are targeted including broadcast, cellular, paging,
personal communications services, microwave and two-way radio. We are also
interested in attracting 9-1-1, federal, state, and local government agencies,
as well as utility and transportation companies to locate on existing sites.
Our objective is to pre-sell capacity on our towers by promoting sites prior to
construction. Rental space on existing towers is also aggressively marketed and
sold.     
   
    We utilize numerous public and proprietary databases to develop detailed
target marketing programs directed at auction block license awardees, existing
tenants and specific market groups. Mailings focus on regional build outs, new
sites and services. The use of databases, such as those with information on
sites, demographic data, licenses and deployment status, coupled with measured
coverage data and radio frequency coverage prediction software, allows our
sales and marketing personnel to target specific carriers' needs for specific
sites. To foster productive relationships with our major existing tenants and
potential tenants, we have formed a team of account relationship managers.
These managers work to develop new tower construction, site leasing services
and site management opportunities, as well as ensure that customers' emerging
needs are translated into new site products and services.     
   
    The marketing department maintains our visibility within the wireless
communications industry through regular advertising and public relations
efforts including actively participating in trade shows and generating regular
press releases, newsletters and targeted mailings (including promotional
flyers). Our promotional activities range from advertisements and site listings
in industry publications to maintaining a presence at national trade shows.
Potential clients are referred to our Web site, which contains information
about us as well as site listings. In addition, our sites are listed on the
Cell Site Express Web site. This Web site enables potential tenants to locate
existing structures by latitude, longitude or address. Clients can easily
contact us via e-mail through the Web site or Cell Site Express. Our network
services capabilities are marketed in conjunction with our tower footprints.
    
                                       78
<PAGE>
 
    To follow up on targeted mailings and to cold-call on potential clients, we
have established a telemarketing department. Telemarketers field inbound and
outbound calls and forward leads to local sales representatives or relationship
managers for closure. Local sales representatives are stationed in each cluster
to develop and foster close business relationships with decision-makers in each
customer organization. Sales professionals work with marketing specialists to
develop sales presentations targeting specific client demands.
 
    In addition to a dedicated, full-time sales and marketing staff, a number
of senior managers spend a significant portion of their efforts on sales and
marketing activities. These managers call on existing and prospective customers
and also seek greater visibility in the industry through speaking engagements
and articles in national publications. Furthermore, many of these managers have
been recognized as industry experts, are regularly quoted in articles and are
called on to testify at local hearings and to draft local zoning ordinances.
 
    Public and community relations efforts include coordinating community
events, such as working with amateur radio clubs to supply emergency and
disaster recovery communications, charitable event sponsorship, and promoting
charitable donations through press releases.
 
Competition
   
    In the United States, we compete with other independent tower owners, some
of which also provide site rental and network services; wireless carriers,
which own and operate their own tower networks; service companies that provide
engineering and site acquisition services; and other potential competitors,
such as utilities, outdoor advertisers and broadcasters, some of which have
already entered the tower industry. Wireless carriers that own and operate
their own tower networks generally are substantially larger and have greater
financial resources than we have. We believe that tower location, capacity,
price, quality of service and density within a geographic market historically
have been and will continue to be the most significant competitive factors
affecting tower rental companies. We also compete for acquisition and new tower
construction opportunities with wireless carriers, site developers and other
independent tower operating companies and believe that competition for tower
site acquisitions will increase and that additional competitors will enter the
tower market, some of which may have greater financial resources than us.     
 
    The following is a list of the independent tower companies that we compete
with in the United States: American Tower Corporation, Pinnacle Towers,
SpectraSite, SBA Communications, WesTower, Unisite, LCC International and
Lodestar Communications.
 
    The following companies are primarily competitors for our rooftop site
management activities in the United States: AAT, APEX, Commsite International,
JJS Leasing, Inc., Motorola, Signal One, Subcarrier Communications, Tower
Resources Management and Unisite.
 
    We believe that the majority of our competitors in the site acquisition
business operate within local market areas exclusively, while a small minority
of firms appear to offer their services nationally, including SBA
Communications Corporation, Whalen & Company and Gearon & Company (a subsidiary
of American Tower Corporation). We offer our services nationwide and we believe
we are currently one of the largest providers of site development services to
the U.S. and international markets. The market includes participants from a
variety of market segments offering individual, or combinations of, competing
services. The field of competitors includes site acquisition consultants,
zoning consultants, real estate firms, right-of-way consulting firms,
construction companies, tower owners/managers, radio frequency engineering
consultants, telecommunications equipment vendors (which provide turnkey site
development services through multiple subcontractors) and carriers' internal
staff. We believe that carriers base their decisions on site development
services on certain criteria, including a company's experience, track record,
local reputation, price and time for completion of a project. We believe that
we compete favorably in these areas.
 
 
                                       79
<PAGE>
 
U.K. Operations
 
Overview
   
    We own and operate, through our 80% interest in CTI, one of the world's
most established television and radio transmission networks and are expanding
our leasing of antenna space on our towers to a variety of wireless carriers.
We provide transmission services for four of the six digital terrestrial
television services in the U.K., two BBC analogue television services, six
national BBC radio services (including the first digital audio broadcast
service in the United Kingdom), 37 local BBC radio stations and two national
commercial radio services through our network of transmitters, which reach
99.4% of the U.K. population. These transmitters are located on approximately
1,300 towers, more than half of which we own and the balance of which are
licensed to us under a site-sharing agreement with NTL, our principal
competitor in the United Kingdom. We have also secured long-term contracts to
provide digital television transmission services to the BBC and ONdigital. See
"--Significant Contracts". In addition to providing transmission services, we
also lease antenna space on our transmission infrastructure to various
communications service providers and provide telecommunications network
installation and maintenance services and engineering consulting services.     
   
    Our core revenue generating activity in the United Kingdom is the analog
terrestrial transmission of radio and television programs broadcast by the BBC.
CTI's business, which was formerly owned by the BBC, was privatized under the
Broadcasting Act 1996 and sold to CTI in February 1997. At the time the BBC
home service transmission business was acquired, CTI entered into a 10-year
transmission contract with the BBC for the provision of terrestrial analog
television and analog and digital radio transmission services in the United
Kingdom. In the twelve months ended December 31, 1998, approximately 60.6% of
CTI's consolidated revenues were derived from the provision of services to the
BBC.     
 
    At December 31, 1998, we owned, leased or licensed 861 transmission sites
on which we operated 865 towers, including the 102 towers we acquired in the
Millennium acquisition. In addition, as of December 31, 1998 we were
constructing eight new towers on existing sites and had 112 site acquisition
projects in process for new tower sites. We have 54 revenue producing rooftop
sites that are occupied by our transmitters but are not available for leasing
to our customers. Our sites are located throughout England, Wales, Scotland and
Northern Ireland.
   
    We expect to significantly expand our existing tower portfolios in the
United Kingdom by building and acquiring additional towers. We believe our
existing tower network encompasses many of the most desirable tower locations
in the United Kingdom for wireless communications. However, due to the shorter
range over which communications signals carry (especially newer technologies
such as PCN) as compared to broadcast signals, wireless communications
providers require a denser portfolio of towers to cover a given area.
Therefore, in order to increase the attractiveness of our tower portfolios to
wireless communications providers, we will seek to build or acquire new
communications towers. Using our team of over 300 engineers with state-of-the-
art network design and radio frequency engineering expertise, we locate sites
and design towers that will be attractive to multiple tenants. We seek to
leverage such expertise by entering into new tower construction contracts with
various carriers, such as British Telecom, Cable & Wireless Communications,
Cellnet, Dolphin, Energis, Highway One, One2One, Orange and Scottish Telecom,
thereby securing an anchor tenant for a site before incurring capital
expenditures for the site build-out. As of December 31, 1998, we were building
eight towers that we will own. In addition, we expect to make strategic
acquisitions of existing communications sites (primarily those owned by
wireless carriers) in order to expand our infrastructure and to further
leverage our site management experience.     
   
    On March 5, 1999, CTI entered into an agreement with One2One pursuant to
which CTI will manage, develop and, at its option, acquire 821 towers. These
towers represent substantially all the     
 
                                       80
<PAGE>
 
towers in One2One's nationwide 900 MHz wireless network in the United Kingdom.
These towers will allow CTI to market a nationwide network of towers to third
generation wireless carriers in the United Kingdom following the completion of
the pending auction of such licenses by the U.K. government.
   
    We believe that we generally have significant capacity on our towers in the
United Kingdom. Although approximately 133 of our towers are poles with limited
capacity, we typically will be able to build new towers that will support
multiple tenants on these sites (subject to the applicable planning process).
We intend to upgrade these limited capacity sites where we believe we can
achieve appropriate returns to merit the necessary capital expenditure. For
example, in connection with a contract with Vodafone, we are upgrading 68 of
these sites with limited capacity. See "--Significant Contracts--Vodafone".
Approximately 59 of our sites are used for medium frequency broadcast
transmissions. At this frequency, the entire tower is used as the transmitting
antenna and is therefore electrically "live". Such towers are therefore
unsuitable for supporting other tenant's communications equipment. However,
medium frequency sites generally have substantial ground area available for the
construction of new multiple tenant towers.     
 
Transmission Business
   
    Analog. For the twelve months ended December 31, 1998, CTI generated
approximately 52.8% of its revenues from the provision of analog broadcast
transmission services to the BBC. Pursuant to the BBC analog transmission
contract, we provide terrestrial transmission services for the BBC's analog
television and radio programs and certain other related services (including BBC
digital radio) for an initial 10-year term through March 31, 2007. See "--
Significant Contracts". For the twelve months ended December 31, 1998, the BBC
analog transmission contract generated revenues of approximately (Pounds)49.4
million ($82.1 million) for us.     
   
    In addition to the BBC analog transmission contract, we have separate
contracts to provide maintenance and transmission services for two national
radio stations, Virgin Radio and Talk Radio. These contracts are for periods of
eight years commencing from, respectively, March 31, 1993 and February 4, 1995.
    
    We own all of the transmission equipment used for broadcasting the BBC's
domestic radio and television programs, whether located on one of CTI's sites
or on an NTL or other third-party site. As of December 31, 1998, CTI had 3,465
transmitters, of which 2,196 were for television broadcasting and 1,269 were
for radio.
 
    A few of our most powerful television transmitters together cover the
majority of the U.K. population. The coverage achieved by the less powerful
transmitters is relatively low, but is important to the BBC's ambition of
attaining universal coverage in the United Kingdom. This is illustrated by the
following analysis of the population coverage of our analog television
transmitters:
 
<TABLE>
<CAPTION>
                                                       Combined
                  Number of sites                     population
               (ranked by coverage)                    coverage
               --------------------                   ----------
         <S>                                          <C>
         1 (Crystal Palace)..........................      21%
         top 16......................................      79
         top 26......................................      86
         top 51......................................      92
         all.........................................    99.4
</TABLE>
 
    All of our U.K. transmitters are capable of unmanned operation and are
maintained by mobile maintenance teams from 27 bases located across the United
Kingdom. Access to the sites is strictly controlled for operational and
security reasons, and buildings at 140 of the sites are protected by
 
                                       81
<PAGE>
 
   
security alarms connected to CTI's Technical Operations Centre at Warwick. The
site-sharing agreement provides us with reciprocal access rights to NTL's
broadcast transmission sites on which we have equipment.     
 
    Certain of our transmitters that serve large populations or important
geographic areas have been designated as priority transmitters. These
transmitters have duplicated equipment so that a single failure will not result
in total loss of service but will merely result in an output-power reduction
that does not significantly degrade the service to most viewers and listeners.
   
    Digital. We have entered into contracts with the holders (including the
BBC) of four of the six digital terrestrial television multiplexes allocated by
the U.K. government to design, build and operate their digital transmission
networks. In connection with the implementation of digital terrestrial
television, new transmission infrastructure will be required. We have committed
to invest approximately (Pounds)100.0 million ($170.0 million) for the
construction of new infrastructure to support digital terrestrial television
over the next two years, (Pounds)55.3 million ($92.0 million) of which we had
already invested by December 31, 1998. By the year 2000, 81 transmission sites
will need to be upgraded with new transmitters and associated systems to
support digital terrestrial television. Of these sites, 49 are owned by us with
the remainder owned by NTL. An arrangement similar to that of the site-sharing
agreement is being negotiated to govern the particular issues arising out of
the sharing of digital transmission sites between NTL and us.     
   
    We successfully began commercial operation of the digital terrestrial
television networks from an initial 22 transmission sites on November 15, 1998.
This launch marks the first stage of the project to introduce the digital
broadcast system that will eventually replace conventional analog television
services in the United Kingdom. As the network size expands during 1999, the
number of viewers who are able to receive the service will increase
significantly. We have accepted an invitation from the U.K. television
regulator, the Independent Television Commission, to play a major role in
planning further digital terrestrial television network extensions to be built
in the year 2000 and beyond.     
 
    We are currently the sole provider of transmission services for digital
radio broadcasts in the United Kingdom. In September 1995, the BBC launched its
initial DAB scheme over our transmission network, and this service is now
broadcast to approximately 60% of the U.K. population. A license for an
independent national digital radio network was awarded to the Digital One
consortium during 1998 and it is expected that this service will commence
during 1999. We are in negotiations to provide accommodation and access to
masts and antennas at 24 transmission sites to support the launch of Digital
One. In addition, local digital radio licenses will be awarded during 1999. We
believe we are well positioned to become the transmission service provider to
the winners of such licenses.
 
Site Rental
   
    The BBC transmission network provides a valuable initial portfolio of
towers for the creation of wireless communications networks. As of December 31,
1998, approximately 200 companies rented antenna space on approximately 405 of
CTI's 919 towers and rooftops. These site rental agreements have normally been
for three to 12 years and are generally subject to rent reviews every three
years. Site sharing customers are generally charged annually in advance,
according to rate cards that are based on the antenna size and position on the
tower. Our largest site rental customer in the United Kingdom is NTL under the
site-sharing agreement. This agreement generated approximately (Pounds)592,000
($984,400) of site rental revenue in December 1998.     
 
    We also provide a range of site maintenance services in order to support
and enhance our U.K. site rental business. We believe that by offering services
such as antenna, base station and tower maintenance and monitoring, we are able
to offer quality services to retain our existing customers and attract future
customers to our communications sites. We complement our U.K. transmission
experience with our site management experience in the United States to provide
customers with a top-of-the-line package of service and technical support.
 
                                       82
<PAGE>
 
    The following table describes our top ten revenue producing towers in the
United Kingdom:
 
<TABLE>
<CAPTION>
                                                 Number of          CTI's
                                                  Tenant        December 1998
  Name                     Location   Height(ft)  Leases       Monthly Revenue
  ----                   ------------ ---------- --------- ------------------------
<S>                      <C>          <C>        <C>       <C>             <C>
Brookmans Park.......... S.E. England    147         19    (Pounds) 25,026 $ 41,613
Bow Brickhill........... S.E. England    197         13             17,479   29,064
Mendip.................. S.W. England    924         19             16,534   27,493
Hannington.............. S. England      440         15             12,267   20,398
Crystal Palace.......... London          653         14             11,638   19,352
Wrotham................. S. England      379         14             11,385   18,931
Waltham................. C. England      954         10             10,750   17,875
Redruth................. S.W. England    500         18             10,523   17,498
Heathfield.............. S. England      443         15             10,296   17,120
Oxford.................. C. England      507         14              9,973   16,583
                                                    ---    --------------- --------
  Total.........................................    151    (Pounds)135,871 $225,927
                                                    ===    =============== ========
</TABLE>
   
    Other than NTL, CTI's largest (by revenue) site rental customers consist
mainly of wireless carriers such as Cellnet, One2One, Orange and Vodafone.
Revenues from these non-BBC sources are expected to become an increasing
portion of CTI's total U.K. revenue base, as the acquired BBC home service
transmission business is no longer constrained by governmental restrictions on
the BBC's commercial activities. We believe that the demand for site rental
from communication service providers will increase in line with the expected
growth of these communication services in the United Kingdom.     
   
    We have master lease agreements with all of the major U.K.
telecommunications site users including British Telecom, Cable & Wireless
Communications, Cellnet, Dolphin, Energis, Highway One, One2One, Orange,
Scottish Telecom and Vodafone. These agreements typically specify the terms and
conditions (including pricing and volume discount plans) under which these
customers have access to all sites within our U.K. portfolio. Customers make
orders for specific sites using the standard terms included in the master lease
agreements. As of December 31, 1998, there were approximately 400 applications
in process for installations at existing sites under such agreements.     
 
Network Services
   
    CTI provides broadcast and telecommunications engineering services to
various customers in the United Kingdom. We retained all the BBC home service
transmission business employees upon CTI's acquisition. Accordingly, we have
engineering and technical staff of the caliber and experience necessary not
only to meet the requirements of our current customer base, but also to meet
the challenges of developing digital technology. Within the United Kingdom, CTI
has worked with several telecommunications operations on design and build
projects as they roll-out their networks. CTI has had success in bidding for
broadcast consulting contracts, including, over the last four years, in
Thailand, Taiwan, Poland and Sri Lanka.     
 
    With the expertise of our engineers and technical staff, we are a turn-key
provider to the wireless communications and broadcast industries. We can
provide customers with a ready-to-operate network infrastructure or any of the
component services involved therein. Such services include network design and
site selection, site acquisition, site development and antenna installation.
 
    Network Design and Site Selection. We have extensive experience in network
design and engineering and site selection. While we maintain sophisticated
network design services primarily to support the location and construction of
multiple tenant towers that we own, from time to time we do provide network
design and site selection services to carriers and other customers on a
consulting
 
                                       83
<PAGE>
 
contract basis. Our network design and site selection services provide our
customers with relevant information including recommendations regarding
location and height of towers, appropriate types of antennas, transmission
power and frequency selection and related fixed network considerations.
 
    Site Acquisition. In the United Kingdom, we are involved in site
acquisition services for our own purposes and for third parties. We recognize
that the site acquisition phase often carries the highest risk for a project.
To ensure the greatest possible likelihood of success and timely acquisition,
we combine a desktop survey of potential barriers to development with a
physical site search that includes initial design analyses, CDM assessments
and, where necessary, line-of-sight surveys. We leverage off our experience in
site acquisition and co-location when meeting with local planning authorities.
 
    Site Development and Antenna Installation. We use a combination of external
and internal resources for site construction. Our engineers are experienced in
both construction techniques and construction management, ensuring an efficient
and simple construction phase. Selected civil contractors are managed by CTI
staff for the ground works phase. Specialist erection companies, with whom we
have a long association, are used for tower installation. Final antenna
installation is undertaken by our own experienced teams.
 
    Site Management and Other Services. We also provide complete site
management, preventive maintenance, fault repair and system management services
to the Scottish Ambulance Service. We also maintain a mobile radio system for
the Greater Manchester Police and provide maintenance and repair services for
transmission equipment and site infrastructure.
 
Significant Contracts
   
    CTI's principal analog broadcast transmission contract is the BBC analog
transmission contract. CTI also has entered into two digital television
transmission contracts, the BBC digital transmission contract and the ONdigital
digital transmission contract. CTI also provides facilities to NTL (in its
capacity as a broadcast transmission provider to non-CTI customers) under the
site-sharing agreement. CTI also has long-term service agreements with
broadcast customers such as Virgin Radio and Talk Radio. In addition, CTI has
several agreements with telecommunications providers, including leases, site
management contracts and independent contractor agreements. CTI has entered
into contracts to design and build infrastructure for customers such as
Cellnet, One2One, Orange, Scottish Telecom and Vodafone.     
 
  BBC Analog Transmission Contract
   
    CTI entered into a 10-year transmission contract with the BBC for the
provision of terrestrial analog television and analog and digital radio
transmission services in the United Kingdom at the time the BBC home service
transmission business was acquired, which contract was subsequently amended on
July 16, 1998 to incorporate a small number of minor modifications requested by
the BBC. The BBC analog transmission contract provides for charges of
approximately (Pounds)46.5 million ($77.3 million) to be payable by the BBC to
CTI for the year ended March 31, 1998 and each year thereafter to the
termination date, adjusted annually at the inflation rate less 1%. In addition,
for the duration of the contract an annual payment of (Pounds)300,000
($498,840) is payable by the BBC for additional broadcast-related services. At
the BBC's request, since October 1997, the number of television broadcast hours
has been increased to 24 hours per day for the BBC's two national television
services, which has added over (Pounds)500,000 ($831,400) annually to the
payments made by the BBC to us.     
 
                                       84
<PAGE>
 
   
    The BBC analog transmission contract also provides for CTI to be liable to
the BBC for "service credits" (i.e., rebates of its charges) in the event that
certain standards of service are not attained as a result of what the contract
characterizes as "accountable faults" or the failure to meet certain "response
times" in relation to making repairs at certain key sites. We believe that CTI
is well-equipped to meet the BBC's service requirements by reason of the
collective experience its existing management gained while working with the
BBC. Following completion of three formal six-month performance reviews, CTI
achieved a 100% "clean sheet" performance, incurring no service credit
penalties.     
   
    The initial term of the BBC analog transmission contract ends on March 31,
2007. Thereafter, the BBC analog transmission contract may be terminated with
12 months' prior notice by either of the parties, expiring on March 31 in any
contract year, from and including March 31, 2007. It may also be terminated
earlier:     
     
  (1)by mutual agreement between CTI and the BBC,     
     
  (2) by one party upon the bankruptcy or insolvency of the other party
      within the meaning of section 123 of the Insolvency Act 1986,     
     
  (3) upon certain force majeure events with respect to the contract as a
      whole or with respect to any site (in which case the termination will
      relate to that site only),     
     
  (4) by the non-defaulting party upon a material breach by the other party
      and     
     
  (5) upon the occurrence of certain change of control events.     
 
  BBC Commitment Agreement
   
    On February 28, 1997, in connection with the acquisition of the BBC home
service transmission business, we, TdF, TeleDiffusion de France S.A., which is
the parent company of TdF and DFI ("TdF Parent"), and the BBC entered into the
BBC commitment agreement, whereby we and TdF agreed (1) not to dispose of any
shares in CTSH or any interest in such shares (or enter into any agreement to
do so) until February 28, 2000; and (2) to maintain various minimum indirect
ownership interests in CTI and CTSH for periods ranging from three to five
years commencing February 28, 1997. These provisions restrict our ability and
the ability of TdF to sell, transfer or otherwise dispose of their respective
CTSH shares (and, indirectly, their CTI shares). The restrictions do not apply
to disposals of which the BBC has been notified in advance and to which the BBC
has given its prior written consent, which, subject to certain exceptions,
consent shall not be unreasonably withheld or delayed.     
   
    The BBC commitment agreement also required TdF Parent and us to enter into
a services agreements with CTI. The original services agreement entered into by
TdF Parent and CTI on February 28, 1997 (pursuant to which TdF makes available
certain technical consultants, executives and engineers to CTI) was amended on
August 21, 1998 to extend the original minimum term of services provided from
three years to seven years, commencing February 28, 1997, thereafter terminable
on 12-month's prior notice given by CTI to TdF after February 28, 2003. See
"Certain Relationships and Related Transactions--Agreements with TdF Related to
the Roll-Up--CTI Services Agreement".     
 
  ONdigital Digital Transmission Contract
   
    In 1997, the Independent Television Commission awarded ONdigital three of
the five available commercial digital terrestrial television multiplexes for
new program services. We bid for and won the 12 year contract from ONdigital to
build and operate its digital television transmission network. The contract
provides for approximately (Pounds)20.0 million ($34.0 million) of revenue per
year from 2001 to 2008, with lesser amounts payable before and after these
years and with service credits repayable for performance below agreed
thresholds.     
 
 
                                       85
<PAGE>
 
  BBC Digital Transmission Contract
   
    In 1998, we bid for and won the 12 year contract from the BBC to build and
operate its digital terrestrial television transmission network. This contract
provides for approximately (Pounds)10.5 million ($17.8 million) of revenue per
year (assuming the BBC commits to the full digital terrestrial television roll-
out contemplated by the BBC digital transmission contract) during the 12 year
period, with service credits repayable for performance below agreed thresholds.
There is a termination provision during the three-month period following the
fifth anniversary of our commencement of digital terrestrial transmission
services for the BBC exercisable by the BBC but only if the BBC's Board of
Governors determines, in its sole discretion, that digital television in the
United Kingdom does not have sufficient viewership to justify continued digital
television broadcasts. Under this provision, the BBC will pay us a termination
fee in cash that substantially recovers our capital investment in the network,
and any residual ongoing operating costs and liabilities. Like the BBC analog
transmission contract, the contract is terminable upon the occurrence of
certain change of control events.     
 
  BT Digital Distribution Contract
   
    Under the BBC digital transmission contract and the ONdigital digital
transmission contract, in addition to providing digital terrestrial
transmission services, CTI has agreed to provide for the distribution of the
BBC's and ONdigital's broadcast signals from their respective television
studios to CTI's transmission network. Consequently, in May 1998, CTI entered
into a 12 year distribution contract with British Telecommunications plc (with
provisions for extending the term), in which British Telecom has agreed to
provide fully duplicated, fiber-based, digital distribution services, with
penalties for late delivery and service credits for failure to deliver 99.99%
availability.     
 
  Site-Sharing Agreement
 
    In order to optimize service coverage and enable viewers to receive all
analog UHF television services using one receiving antenna, the BBC, as the
predecessor to CTI, and NTL made arrangements to share all UHF television
sites. This arrangement was introduced in the 1960s when UHF television
broadcasting began in the United Kingdom. In addition to service coverage
advantages, the arrangement also minimizes costs and avoids the difficulties of
obtaining additional sites.
   
    Under the site-sharing agreement, the party that is the owner, lessee or
licensee of each site is defined as the "station owner". The other party, the
sharer, is entitled to request a license to use certain facilities at that
site. The site-sharing agreement and each site license provide for the station
owner to be paid a commercial license fee in accordance with the site-sharing
agreement ratecard and for the sharer to be responsible, in normal
circumstances, for the costs of accommodation and equipment used exclusively by
it. The site-sharing agreement may be terminated with five years' prior notice
by either of the parties and expires on December 31, 2005 or on any tenth
anniversary of that date. It may also be terminated (1) following a material
breach by either party which, if remediable, is not remedied within 30 days of
notice of such breach by the non-breaching party, (2) on the bankruptcy or
insolvency of either party and (3) if either party ceases to carry on a
broadcast transmission business or function.     
   
    Negotiations are in progress between NTL and us to amend the site-sharing
agreement to account for the build-out of digital transmission sites and
equipment, a new rate card related to site sharing fees for new digital
facilities and revised operating and maintenance procedures related to digital
equipment.     
 
                                       86
<PAGE>
 
 Vodafone
 
    On April 16, 1998, under Vodafone's master lease agreement with us,
Vodafone agreed to locate antennas on 122 of our existing communication sites
in the United Kingdom. The first 39 sites had been completed by the end of
December 1998. This included 4 sites at which a new tower had been constructed
to replace an existing structure of limited capacity. The remaining sites are
expected to be completed by end of July 1999 and will include the construction
of a further 60 replacement towers. After their upgrade, these sites will be
able to accommodate additional tenants.
 
Customers
   
    For the twelve months ended December 31, 1998, the BBC accounted for
approximately 60.6% of CTI's consolidated revenues. This percentage has
decreased from 64.6% for the twelve months ended March 31, 1998 and is expected
to continue to decline as CTI continues to expand its site rental business. CTI
provides all four U.K. PCN/cellular operators (Cellnet, One2One, Orange and
Vodafone) with infrastructure services and also provides fixed
telecommunications operators, such as British Telecom, Cable & Wireless
Communications, Energis and Scottish Telecom, with microwave links and backhaul
infrastructure. The following is a list of some of CTI's leading site rental
customers by industry segment.     
 
<TABLE>   
<CAPTION>
       Industry                            Selected Customers
       --------                            ------------------
   <S>                      <C>
   Broadcasting............ BBC, NTL, Virgin Radio, Talk Radio, XFM
   PMR/TETRA............... National Band 3, Dolphin
   PCN..................... Orange, One2One
   Data.................... RAM Mobile Data, Cognito
   Paging.................. Hutchinson, Page One
   Governmental Agencies... Ministry of Defense
   Cellular................ Vodafone, Cellnet
   Public
    Telecommunications..... British Telecom, Cable & Wireless Communications
   Other................... Aerial Sites, Health Authorities
   Utilities............... Welsh Water, Southern Electric
</TABLE>    
 
Sales and Marketing
   
    We have 20 sales and marketing personnel in the United Kingdom who identify
new revenue-generating opportunities, develop and maintain key account
relationships, and tailor service offering to meet the needs of specific
customers. An excellent relationship has been maintained with the BBC, and
successful new relationships have been developed with many of the major
broadcast and wireless carriers in the United Kingdom. We have begun to
actively cross-sell our products and services so that, for example, site rental
customers are also offered build-to-suit services.     
 
Competition
 
    NTL, the privatized engineering division of the IBA and now a subsidiary of
NTL Inc. (formerly International CableTel Inc.), is CTI's primary competition
in the terrestrial broadcast transmission market in the United Kingdom. NTL
provides analog transmission services to ITV, Channels 4 and 5, and S4C. It
also has been awarded the transmission contract for the new DTT multiplex
service from Digital 3 & 4 Limited, and a similar contract for the DTT service
for SDN (CTI has been awarded similar contracts for the BBC and ONdigital--
serving a total of four multiplexes compared with NTL's two). Since its
creation in 1991, NTL has diversified from its core television broadcasting
business using its transmission infrastructure to enter into the radio
transmission and telecommunications sectors.
 
                                       87
<PAGE>
 
   
    Although CTI and NTL are direct competitors, they have reciprocal rights to
the use of each others' sites for broadcast transmission usage in order to
enable each of them to achieve the necessary country-wide coverage. This
relationship is formalized by the site-sharing agreement entered into in 1991,
the time at which NTL was privatized.     
 
    NTL also offers site rental on approximately 1,000 of its sites (some of
which are managed on behalf of third parties). Like CTI, NTL offers a full
range of site-related services to its customers, including installation and
maintenance. CTI believes its towers to be at least as well situated as NTL's
and that it will be able to expand its own third-party site-sharing
penetration. CTI also believes that its penetration of this market has to date
lagged behind NTL only because of the governmental restrictions on the
commercial activities of CTI's business prior to its privatization.
   
    All four U.K. mobile operators own site infrastructure and lease space to
other users. Their openness to sharing with direct competitors varies by
operator. Cellnet and Vodafone have agreed to cut site costs by jointly
developing and acquiring sites in the Scottish Highlands. British Telecom and
Cable & Wireless Communications are both major site sharing customers but also
compete by leasing their own sites to third parties. British Telecom's position
in the market is even larger when considered in combination with its interest
in Cellnet.     
 
    Several other companies compete in the market for site rental. These
include British Gas, Racal Network Systems, Aerial Sites Plc, Relcom Aerial
Services and the Royal Automobile Club. Some companies own sites initially
developed for their own networks, while others are developing sites
specifically to exploit this market.
 
    CTI faces competition from a large number of companies in the provision of
network services. The companies include NTL, specialty consultants and
equipment manufacturers such as Nortel and Ericsson.
 
Properties
   
    In the United States, our interests in our tower sites are comprised of a
variety of fee interests, leasehold interests created by long-term lease
agreements, private easements and easements, licenses or rights-of-way granted
by government entities. In rural areas, a tower site typically consists of a
three- to five-acre tract, which supports towers, equipment shelters and guy
wires to stabilize the structure. Less then 3,000 square feet are required for
a self-supporting tower structure of the kind typically used in metropolitan
areas. Our land leases generally have five- or ten-year terms and frequently
contain one or more renewal options. Some land leases provide "trade-out"
arrangements whereby we allow the landlord to use tower space in lieu of paying
all or part of the land rent. As of December 31, 1998, we had approximately 384
land leases. Pursuant to the senior credit facility, our senior lenders have
liens on a substantial number of our land leases and other property interests
in the United States.     
 
    In the United Kingdom, tower sites range from less than 400 square feet for
a small rural TV booster station to over 50 acres for a high-power radio
station. As in the United States, the site accommodates the towers, equipment
buildings or cabins and, where necessary, guy wires to support the structure.
Land is either owned freehold, which is usual for the larger sites, or is held
on long-term leases that generally have terms of 21 years or more.
 
Legal Proceedings
 
    We are occasionally involved in legal proceedings that arise in the
ordinary course of business. Most of these proceedings are appeals by
landowners of zoning and variance approvals of local zoning boards. While the
outcome of these proceedings cannot be predicted with certainty,
 
                                       88
<PAGE>
 
   
management does not expect any pending matters to have a material adverse
effect on our financial condition or results of operations. We are currently in
discussions with the Department of Labor to settle an investigation it has
conducted into employment practices put into place prior to our acquisition of
Crown Communication. Upon notification by the Department of Labor of its
investigation, the practices were ceased. We anticipate the settlement to be
approximately $200,000.     
 
Employees
 
    At March 1, 1999, we employed 928 people worldwide. Other than in the
United Kingdom, we are not a party to any collective bargaining agreements. In
the United Kingdom, we are party to a collective bargaining agreement with the
Broadcast, Entertainment, Cinematographic and Technicians Union. This agreement
establishes bargaining procedures relating to the terms and conditions of
employment for all of CTI's non-management staff. We have not experienced any
strikes or work stoppages, and management believes that our employee relations
are satisfactory.
 
Regulatory Matters
 
United States
 
    Federal Regulations. Both the FCC and FAA regulate towers used for wireless
communications transmitters and receivers. Such regulations control the siting
and marking of towers and may, depending on the characteristics of particular
towers, require registration of tower facilities. Wireless communications
devices operating on towers are separately regulated and independently licensed
based upon the particular frequency used.
 
    The FCC, in conjunction with the FAA, has developed standards to consider
proposals for new or modified antenna structures. These standards mandate that
the FCC and the FAA consider the height of proposed antenna structures, the
relationship of the structure to existing natural or man-made obstructions and
the proximity of the antenna structures to runways and airports. Proposals to
construct or to modify existing antenna structures above certain heights are
reviewed by the FAA to ensure the structure will not present a hazard to
aviation. The FAA may condition its issuance of a no-hazard determination upon
compliance with specified lighting and/or marking requirements. The FCC will
not license the operation of wireless telecommunications devices on towers
unless the tower is in compliance with the FAA's rules and is registered with
the FCC, if necessary. The FCC will not register a tower unless it has been
cleared by the FAA. The FCC may also enforce special lighting and painting
requirements. Owners of wireless transmissions towers may have an obligation to
maintain painting and lighting to conform to FAA and FCC standards. Tower
owners may also bear the responsibility of notifying the FAA of any tower
lighting outage. The Company generally indemnifies its customers against any
failure to comply with applicable regulatory standards. Failure to comply with
the applicable requirements may lead to civil penalties.
   
    The 1996 Telecom Act limits certain state and local zoning authorities'
jurisdiction over the construction, modification and placement of towers. The
new law prohibits any action that would (1) discriminate between different
providers of personal wireless services or (2) prohibit or have the effect of
prohibiting the provision of personal wireless service. Finally, the 1996
Telecom Act requires the federal government to help licensees for wireless
communications services gain access to preferred sites for their facilities.
This may require that federal agencies and departments work directly with
licensees to make federal property available for tower facilities.     
 
    Local Regulations. Local regulations include city and other local
ordinances, zoning restrictions and restrictive covenants imposed by community
developers. These regulations vary greatly, but typically require tower owners
to obtain approval from local officials or community standards organizations
prior to tower construction. Local zoning authorities generally have been
hostile to construction of new transmission towers in their communities because
of the height and visibility of the towers.
 
                                       89
<PAGE>
 
   
    Licenses Under the Communications Act of 1934. We hold, through certain of
our subsidiaries, licenses for radio transmission facilities granted by the
FCC, including licenses for common carrier microwave and commercial mobile
radio services, including SMR and paging facilities, as well as private mobile
radio services including industrial/business radio facilities, which are
subject to additional regulation by the FCC. We are required to obtain the
FCC's approval prior to the transfer of control of any of our FCC licenses.
Consummation of the IPO and the Roll-Up would have resulted in a transfer of
control of us under the FCC's rules and policies if, after such transactions,
over 50% of our voting stock would have been owned by new stockholders.     
   
    We, as the parent company of the licensees of common carrier and commercial
mobile radio services facilities, are also subject to Section 310(b)(4) of the
Communications Act of 1934, as amended, which would limit us to a maximum of
25% foreign ownership absent a ruling from the FCC that foreign ownership in
excess of 25% is in the public interest. In light of the World Trade
Organization Agreement on Basic Telecommunications Services, which took effect
on February 5, 1998, the FCC has determined that such investments are generally
in the public interest if made by individuals and entities from WTO-member
nations. We are over 25% foreign owned by companies headquartered in France,
the United Kingdom and New Zealand. See "Principal and Selling Stockholders".
Each of these nations is a signatory to the WTO agreement. The FCC has granted
approval of up to 49.9% foreign ownership of us, at least 25% of which will be
from WTO-member nations.     
 
United Kingdom
 
    Telecommunications systems and equipment used for the transmission of
signals over radio frequencies have to be licensed in the United Kingdom. These
licenses are issued on behalf of the British Government by the Secretary of
State for Trade and Industry under the Telecommunications Act 1984 and the
Wireless Telegraphy Acts 1949, 1968 and 1998. CTI has a number of such licenses
under which it runs the telecommunications distribution and transmission
systems which are necessary for the provision of its transmission services.
CTI's operations are subject to comprehensive regulation under the laws of the
United Kingdom.
 
 Licenses under the Telecommunications Act 1984
 
    CTI has the following three licenses under the Telecommunications Act 1984:
   
    Transmission License. The transmission license is a renewable license to
run telecommunications systems for the transmission via wireless telegraphy of
broadcasting services. This license is for a period of at least twenty-five
years from January 23, 1997, and is CTI's principal license. Its main
provisions include:     
     
    (1) a price control condition covering the provision of all analog radio
  and television transmission services to the BBC under the BBC analog
  transmission agreement (for an initial price of approximately (Pounds)44
  million for regulated elements of the services provided by CTI under the
  BBC analog transmission agreement in the year ended March 31, 1997,
  subject to an increase cap which is 1% below the rate of increase in the
  Retail Price Index over the previous calendar year). The current price
  control condition applies until March 31, 2006;     
     
    (2) a change of control provision which requires notification of
  acquisitions of interest in CTI of more than 20% by a public
  telecommunications operator or any Channel 3 or Channel 5 licensee, which
  acquisitions entitle the Secretary of State to revoke the license;     
     
    (3) a site sharing requirement requiring CTI to provide space on its
  towers to analog and digital broadcast transmission operators and
  including a power for OFTEL, as the regulator, to determine prices if
  there is failure between the site owner and the prospective site sharer to
  agree to a price;     
 
                                       90
<PAGE>
 
     
    (4) a fair trading provision enabling OFTEL to act against anti-
  competitive behavior by the licensee; and     
     
    (5) a prohibition on undue preference or discrimination in the provision
  of the services it is required to provide third parties under the
  transmission license.     
   
    OFTEL has made a determination with respect to a complaint made by Classic
FM and NTL in respect of certain charges, imposed previously by the BBC under
the site-sharing agreement with NTL for the use by Classic FM of BBC radio
antennas and passed on to Classic FM by NTL. OFTEL's position is that the site-
sharing agreement did not cover charges for new services to customers such as
Classic FM, thereby enabling OFTEL to intervene and determine the appropriate
rate under the "applicable rate" mechanism in CTI's transmission license. This
procedure could result in the fees NTL pays to CTI for site sharing facilities
for Classic FM, currently calculated under the site-sharing agreement, being
determined at a reduced rate and otherwise not being covered by the terms of
any existing contract which could lead to a diminution of CTI's income of
approximately (Pounds)300,000 per annum (equivalent to approximately 0.4% of
revenues and 1.0% of EBITDA for the fiscal year ended March 31, 1997). CTI has
applied for leave to obtain a judicial review of this decision. In addition,
CTI has made a provision of approximately (Pounds)1.9 million relating to any
rate adjustment imposed by OFTEL with respect to previous charges for Classic
FM under the site-sharing agreement.     
   
    CTI is discussing with OFTEL certain amendments to CTI's Telecommunications
Act transmission license to ensure that the price control condition
accommodates the provision by CTI of additional contractually agreed upon
services to the BBC in return for additional agreed upon payments. See "Risk
Factors--We Are Subject to Extensive Regulations Which Could Change at Any Time
and Which We Could Fail to Comply With".     
   
    The Secretary of State has designated the transmission license a public
telecommunications operator license in order to reserve to himself certain
emergency powers for the protection of national security. This designation is,
however, limited to this objective. CTI does not have a full domestic public
telecommunications operator license and does not require one for its current
activities. The Department of Trade and Industry has, nevertheless, indicated
that it would be willing to issue CTI such a license. As a result CTI would
gain wider powers to provide services to third parties including public
switched voice telephony and satellite uplink and would grant CTI powers to
build out its network over public property (so-called "code powers").     
   
    General Telecom License. The general telecom license is a general license
to run telecommunications systems and authorizes CTI to run all the necessary
telecommunications systems to convey messages to its transmitter sites (e.g.,
via leased circuits or using its own microwave links). The license does not
cover the provision of public switched telephony networks (which would require
a public telecommunications operator license as described above).     
   
    Satellite License. The satellite license is a license to run
telecommunications systems for the provision of satellite telecommunication
services and allows the conveyance via satellite of messages, including data
and radio broadcasting. The license excludes television broadcasting direct to
the home via satellite although distribution via satellite of television
broadcasting services which are to be transmitted terrestrially is permitted.
    
 Licenses under the Wireless Telegraphy Acts 1949, 1968 and 1998
 
    CTI has a number of licenses under the Wireless Telegraphy Acts 1949, 1968
and 1998, authorizing the use of radio equipment for the provision of certain
services over allocated radio frequencies including:
     
    (1) a broadcasting services license in relation to the transmission
  services provided to the BBC, Virgin Radio and Talk Radio;     
 
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    (2) a fixed point-to-point radio links license;     
     
    (3) two DAB test and development licenses; and     
     
    (4) digital terrestrial television test and development licenses.     
   
    All the existing licenses under the Wireless Telegraphy Acts 1949, 1968 and
1998 have to be renewed annually with the payment of a significant fee. The
BBC, Virgin Radio and Talk Radio have each contracted to pay their portion of
these fees. ONdigital is obligated under the ONdigital digital transmission
contract to pay most of their portion of these fees.     
 
Environmental Matters
   
    Our operations are subject to foreign, federal, state and local laws and
regulations relating to the management, use, storage, disposal, emission, and
remediation of, and exposure to, hazardous and nonhazardous substances,
materials and wastes. As an owner and operator of real property, we are subject
to certain environmental laws that impose strict, joint and several liability
for the cleanup of on-site or off-site contamination relating to existing or
historical operations, and also could be subject to personal injury or property
damage claims relating to such contamination. We are potentially subject to
cleanup liabilities in both the United States and the United Kingdom.     
   
    We are also subject to regulations and guidelines that impose a variety of
operational requirements relating to radio frequency emissions. The potential
connection between radio frequency emissions and certain negative health
effects, including some forms of cancer, has been the subject of substantial
study by the scientific community in recent years. To date, the results of
these studies have been inconclusive. Although we have not been subject to any
claims relating to radio frequency emissions, we have established operating
procedures designed to reduce employee exposures to radio frequency emissions
and are presently evaluating certain of our towers and transmission equipment
in the United States and the United Kingdom to determine whether radio
frequency emission reductions are possible.     
   
    In addition, we are subject to licensing, registration and related
requirements concerning tower siting, construction and operation. In the United
States, the FCC's decision to license a proposed tower may be subject to
environmental review pursuant to the National Environmental Policy Act of 1969,
which requires federal agencies to evaluate the environmental impacts of their
decisions under certain circumstances. The FCC regulations implementing the Act
place responsibility on each applicant to investigate any potential
environmental effects of a proposed operation and to disclose any significant
effects on the environment in an environmental assessment prior to commencing
construction. In the event the FCC determines that a proposed tower would have
a significant environmental impact, the FCC would be required to prepare an
environmental impact statement. This process could significantly delay or
prevent the registration or construction of a particular tower, or make tower
construction more costly. In certain jurisdictions, local laws or regulations
may impose similar requirements.     
   
    We believe that we are in substantial compliance with all applicable
environmental laws. Nevertheless, there can be no assurance that the costs of
compliance with existing or future environmental laws will not have a material
adverse effect on our business, results of operations, or financial condition.
    
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<PAGE>
 
                              
                           THE 1999 TRANSACTIONS     
   
Bell Atlantic Joint Venture     
   
    On March 31, 1999, Bell Atlantic Mobile, certain of its affiliates, CCIC
and CCA Investment Corp., our wholly owned indirect subsidiary ("CCAIC"),
formed a joint venture to own and operate a significant majority of Bell
Atlantic's towers. We own approximately 61.5% of the joint venture and Bell
Atlantic and certain of its affiliates own the remaining 38.5% along with a
0.001% interest in the joint venture's operating subsidiary. For financial
reporting purposes, we intend to consolidate the joint venture's results of
operations and financial condition with our own.     
   
    We manage the day-to-day operations of the joint venture. The joint venture
will actively seek to add additional tenants to its towers in order to increase
its revenues. The joint venture will also construct and own new towers that are
needed by Bell Atlantic's wireless communications business. In addition, the
joint venture will have the right to pursue the next 300 non-Bell Atlantic new
tower builds that we identify in the territories in which the joint venture
will operate. See "--Build-to-Suit Agreement" and "--Global Lease". The joint
venture will have regional offices that will be staffed primarily with our
employees to perform marketing, billing, operations and maintenance functions.
    
          
    The following descriptions of the agreements related to the joint venture
are summaries of the material portions of those agreements. These descriptions
are qualified in their entirety by reference to the complete texts of the
agreements, each of which is available as set forth under the heading
"Available Information".     
 
Formation Agreement
   
    Formation of the Joint Venture. Pursuant to the formation agreement, CCAIC
contributed $250.0 million in cash and approximately 15.6 million shares of our
common stock (valued at $197.0 million) to the joint venture. Bell Atlantic and
its affiliates transferred approximately 1,459 (56 of which are under
construction) towers along with related assets and liabilities to the joint
venture. The joint venture borrowed $180.0 million under a committed $250.0
million revolving credit facility and made a $380.0 million cash distribution
to Bell Atlantic.     
   
    Concurrently with the formation of the joint venture, Bell Atlantic and the
joint venture entered into a master build-to-suit agreement, a global lease and
a transitional services agreement and we entered into a services agreement with
the joint venture.     
   
    Terms and Conditions. In connection with its contribution of assets and
liabilities to the joint venture, Bell Atlantic made certain representations
and warranties to the joint venture concerning the contributed assets and
liabilities. In general, the joint venture will have until June 30, 2000, to
raise any claims for indemnification for breaches of the representations and
warranties by Bell Atlantic. However, Bell Atlantic's indemnification
obligations are subject to a number of significant limitations including a per
occurrence deductible of $25,000, an aggregate deductible of $7.5 million and
an absolute cap of $195.0 million.     
       
       
Build-to-Suit Agreement
   
    In connection with the formation of the joint venture, Bell Atlantic and
the joint venture entered into the build-to-suit agreement. Pursuant to the
build-to-suit agreement and subject to certain conditions, Bell Atlantic and
the joint venture have agreed that (1) the next 500 towers to be built for Bell
Atlantic's wireless communications business will be constructed and owned by
the joint venture and (2) immediately thereafter the joint venture will have a
right of first refusal to construct the next 200 additional towers to be built
for Bell Atlantic. Bell Atlantic is required to submit these 700 site proposals
to the joint venture during the five-year period following the formation of the
joint venture; however, the five-year period will be extended for additional
one-year periods, until 700 site     
 
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<PAGE>
 
   
proposals are submitted to the joint venture. The joint venture will be
required to build towers in the general vicinity of the locations proposed by
Bell Atlantic. Upon completion of a tower, it will become subject to the global
lease (as discussed below). Space not leased by Bell Atlantic or its affiliates
on each tower is available for lease by the joint venture to third parties.
       
    The build-to-suit agreement sets out various time periods for Bell Atlantic
to identify its tower needs within certain search areas, and for the joint
venture to locate sites and to thereafter complete site acquisition and
development work, including permitting and construction.     
 
Global Lease
   
    In connection with the formation of the joint venture, Bell Atlantic and
the joint venture will enter into the global lease. All of the 1,459 towers
acquired by the joint venture from Bell Atlantic and its affiliates, and all
towers constructed by the joint venture pursuant to the build-to-suit
agreement, will be governed by the global lease. The average monthly rent paid
by Bell Atlantic on each of the 1,459 towers contributed to the joint venture
by Bell Atlantic will be approximately $1,850. Minimum monthly rents on the
towers built pursuant to the build-to-suit agreement will range from $1,250 to
$1,833 depending on the region in which the tower is located. These rents may
increase based on the amount of Bell Atlantic's equipment to be installed at a
site. Rents are subject to annual increase based on the consumer price index,
subject to certain adjustments. For all sites, the initial lease term is ten
years. Bell Atlantic has the right to extend any lease for three additional
five-year terms and one additional term of four years and eleven months. Each
lease will automatically renew for an option term unless Bell Atlantic notifies
the joint venture at least six months before the then current term expires.
Space not leased by Bell Atlantic or its affiliates on each tower is available
for lease by the joint venture to third parties.     
 
Operating Agreements
   
    In connection with the formation of the joint venture, Bell Atlantic and
CCAIC entered into limited liability company operating agreements that
established and govern the limited liability companies comprising the joint
venture.     
   
    Governance. The business and affairs of the joint venture will be managed
by its managers under the supervision of a board of representatives. Each
manager will be selected by CCAIC. Members of the board of representatives will
be selected by each of Bell Atlantic and CCAIC in proportion to their ownership
interests in the joint venture. The board of representatives initially will
have six members, with two selected by Bell Atlantic and four selected by
CCAIC. So long as Bell Atlantic maintains at least a 5.0% interest in the joint
venture, it will maintain the right to designate at least one member of the
board of representatives.     
   
    The managers will operate the joint venture on a day-to-day basis. In
general, the managers will have the power and authority to take all necessary
or appropriate actions to conduct the joint venture's business in accordance
with its then current business plan. Actions requiring the approval of the
board of representatives generally will be authorized upon the affirmative vote
of a majority of the members of the board of representatives. However, the
following actions will require the mutual consent of Bell Atlantic and CCAIC,
either by written consent or by the approval of representatives of each of Bell
Atlantic and CCAIC at a meeting of the board of representatives:     
 
  .  engaging in any business other than owning, acquiring, constructing,
     leasing and operating communications towers in the United States;
     
  .  taking any voluntary action that would cause the joint venture to be
     insolvent or voluntarily entering into a bankruptcy proceeding;     
     
  .  incurring any debt other than the joint venture's credit facility and
     ordinary course trade payables;     
 
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<PAGE>
 
  .  incurring any liens;
     
  .  issuing any additional equity interests in the joint venture;     
 
  .  becoming liable with respect to contingent obligations such as
     guarantees or the obligation to make take-or-pay or similar payments;
     
  .  failing to preserve the joint venture's existence under Delaware law or
     its qualification to do business in each jurisdiction in which such
     qualification is necessary or desirable;     
 
  .  mergers or consolidations;
 
  .  sales of assets outside the ordinary course;
 
  .  entry into contracts with affiliates except in the ordinary course and
     on an arm's-length basis;
     
  .  any dividends or distributions; provided, if the joint venture has been
     dissolved and the joint venture's credit facility has been repaid in
     full, Bell Atlantic's consent will not be required;     
     
  .  the determination of the methodology to be used in calculating payments
     under the management agreement and the services agreement pursuant to
     which we will manage and provide services to the joint venture;     
 
  .  approval of the business plan;
     
  .  entry into contracts that (1) restrict the business activities of the
     joint venture in any geographic area, (2) contain exclusivity
     provisions, (3) are inconsistent with any of the agreements entered into
     in connection with the formation of the joint venture or (4) provide for
     the purchase or sale of goods or services involving an amount in excess
     of $10.0 million per year; and     
     
  .  exercising any voting rights with respect to the shares of our common
     stock held by the joint venture; provided, if Bell Atlantic and CCAIC do
     not agree as to how the shares should be voted, the shares will be voted
     pro rata with all shares of our common stock voted on the matter.     
   
    Restrictions on Transfers of Interests; Rights of First Refusal; Tag-Along
Rights.  Except for transfers to wholly owned affiliates, neither Bell Atlantic
nor CCAIC may transfer its interest in the joint venture to a third party
unless it first offers its interest to the other on terms and conditions,
including price, no less favorable than the terms and conditions on which it
proposes to sell its interest to the third party. In addition, if Bell Atlantic
or CCAIC wishes to transfer its interest in the joint venture to a third party,
the other party will have the right to require the third party, as a condition
to the sale, to purchase a pro rata portion of its interest in the joint
venture on the same terms and conditions, including price. Bell Atlantic may
only transfer its 0.001% interest in the operating subsidiary of the joint
venture to its wholly owned affiliates or in connection with a merger or
consolidation transaction to which Bell Atlantic or Bell Atlantic Corporation
is a party.     
   
    Dissolution of the Joint Venture. We have agreed with Bell Atlantic that
upon a dissolution of the joint venture, in satisfaction of our respective
interests in the joint venture, we would receive all the assets and liabilities
of the joint venture other than the approximately 15.6 million shares of our
common stock held by the joint venture and Bell Atlantic would receive all of
the shares of our common stock held by the joint venture and a payment from us,
equal to 14.0% of the fair market value of the assets and liabilities of the
joint venture (other than our common stock), to be made in cash or our common
stock (at our election). In certain limited circumstances, we may elect to
participate in an increased value on the shares of our common stock held by the
joint venture. Bell Atlantic would continue to retain its 0.001% interest in
the joint venture's operating subsidiary. For so long as it retains such
interest, the operations formerly included in the joint venture would remain
    
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<PAGE>
 
   
subject to the operating restrictions set forth under "--Governance". A
dissolution of the joint venture may be triggered (1) by Bell Atlantic at any
time following the third anniversary of the formation of the joint venture and
(2) by us at any time following the fourth anniversary of its formation;
however, if we trigger the dissolution prior to the seventh anniversary, we may
be required to make additional cash payments to Bell Atlantic.     
 
Transitional Services Agreement; Services Agreement
   
    In connection with the formation of the joint venture, Bell Atlantic and
the joint venture entered into a transitional services agreement pursuant to
which Bell Atlantic will provide the joint venture with services necessary to
ensure a smooth transition of the business to the joint venture. In addition,
we and the joint venture entered into a services agreement pursuant to which we
will provide the joint venture with certain services.     
 
Proposed BellSouth Transaction
   
    On March 5, 1999, we entered into a preliminary agreement, the letter
agreement, with BellSouth Mobility Inc., BellSouth Telecommunications Inc. and
certain of its affiliates. Subject to approval by BellSouth's Board of
Directors, the letter agreement sets forth the terms of our agreement under
which BellSouth will sell to us, in a taxable sale pursuant to a master
sublease agreement, their 1,850 wireless communications towers for $610.0
million, consisting of $430.0 million in cash and approximately 9.1 million
shares of our common stock (valued at $180.0 million), subject to adjustments.
The aggregate consideration will be subject to increase if BellSouth transfers
more than 1,850 towers to us in connection with the transaction.     
 
    We will be responsible for managing, maintaining and leasing the available
space on BellSouth's wireless communications towers located throughout Indiana,
Kentucky, Louisiana, Mississippi, Alabama, Arkansas, Florida, Georgia and
Tennessee. While we will have complete responsibility for the towers, and their
monitoring and maintenance, BellSouth will continue to fully own its
communications components including switching equipment, shelters and cell site
facilities. BellSouth will pay a fee of $1,200 per month per site to us for its
services on existing and build-to-suit towers.
   
    The transaction is expected to close in a series of closings, beginning in
the second quarter of 1999, and is expected to be fully closed no later than
eight months thereafter. In connection with our entering into the letter
agreement we have placed $50.0 million in an escrow account which will be
returned to us at the first stage of the multi-stage closing. There can be no
assurance, however, that the proposed BellSouth transaction will be consummated
on the terms described in this document or at all. See "Risk Factors--We May
Not Consummate the 1999 Transactions."     
   
    The following description of the agreements related to the proposed
BellSouth transaction are summaries of the material portions of those
agreements. These descriptions are qualified in their entirety by reference to
the complete text of the agreements, each of which is available as set forth
under the heading "Available Information".     
 
Letter Agreement
   
    General. Pursuant to the letter agreement, a newly formed subsidiary of
ours, that we call Crown Castle South Inc. ("CCSI"), will receive rights to
lease, sublease, design, develop, contract, operate, market and manage
approximately 1,850 tower sites owned by BellSouth Mobility Inc., BellSouth
Telecommunications Inc. and certain of BellSouth's affiliates, or to be
constructed on behalf of BellSouth, in Indiana, Kentucky, Louisiana,
Mississippi, Alabama, Arkansas, Florida, Georgia and Tennessee, which we call
the territory, in exchange for aggregate consideration of $610.0 million,
consisting of $430.0 million in cash and approximately 9.1 million shares of
our common stock (valued at $180.0 million), subject to adjustments.     
 
                                       96
<PAGE>
 
   
    The terms and conditions of the sublease of the 1,850 sites by BellSouth to
CCSI are set forth in an agreement, which we call the Sublease, to be entered
into between BellSouth and CCSI and us. Further, we have agreed to enter into a
site management agreement, pursuant to which we will agree to provide certain
management services on sites which are not part of the 1,850 towers
contemplated by the Sublease, because of restrictions on transfer, and which
will be designated by BellSouth. The letter agreement further contemplates a
build-to-suit agreement to be entered into by BellSouth and CCSI pursuant to
which CCSI will develop and construct at least 500 towers in the territory over
a period of five years, which period will be extended for an additional two-
year period in the event CCSI has not completed at least 500 tower builds
within the initial five-year time period.     
   
    The letter agreement provides that the transaction will require further
documentation including the preparation, acceptance and delivery of a
definitive agreement to sublease, which we call the Agreement to Sublease, the
terms of which have not yet been fully negotiated.     
   
    Consideration. Pursuant to the letter agreement, we will pay to BellSouth
the sum of $324,324.32 for each site leased or subleased to CCSI pursuant to
the Sublease. In the event that subleases covering the full 1,850 towers are
transferred to CCSI as contemplated by the letter agreement, the aggregate
consideration payable to BellSouth will consist of $430.0 million in cash and
$180.0 million in our common stock; provided, however, that we will retain the
option to increase the cash portion of the aggregate consideration by up to
$30.0 million and decrease the equity portion to not less than $150.0 million.
Such option must be exercised by us prior to the first closing. The number of
shares of our common stock included in the consideration will be approximately
9.1 million shares and was determined using the average closing price of our
common stock on the 30 trading days immediately preceding March 5, 1999, which
we call the initial share price. While the letter agreement contemplates the
sublease by BellSouth of approximately 1,850 sites to CCSI, in the event that
additional sites are subleased to CCSI, the consideration paid for the next 250
sites will be payable in cash only. If CCSI subleases more than 2,100 sites
from BellSouth in connection with the Sublease, consideration for any
additional towers will be payable in shares of our common stock.     
   
    The letter agreement further provides that if the average closing price of
our common stock during the 30 day period immediately preceding the first
anniversary of the final closing which we call the subsequent share price is
less than the initial share price, then we will, at our option, (1) pay
BellSouth cash in an amount, which we call the make-up amount, equal to (x) the
difference between the initial share price and the subsequent share price
multiplied by (y) the number of shares issued as part of the consideration less
(z) the gross proceeds from all sales of such shares prior to the first
anniversary of the final closing or (2) issue to BellSouth the number of shares
of our common stock equal to the make-up amount divided by the subsequent share
price; in each case not to exceed $50.0 million in cash or $75.0 million in
common stock.     
   
    Pursuant to the letter agreement, the consideration will be subject to
adjustment based on the amount we are required to pay in calendar year 1999 for
ground rent on sites contemplated by the letter agreement. If a post-closing
audit demonstrates that the amount we are required to pay, in aggregate, for
such ground rents exceeds $11.4 million, BellSouth will be required to pay to
CCSI an amount equal to a certain multiple of the amount by which the rents
exceed $11.4 million, not to exceed $45.0 million.     
   
    Escrow Payment. In connection with the signing of the letter agreement, we
deposited the amount of $50.0 million into an escrow account. Upon approval of
the proposed BellSouth transaction by BellSouth's Board of Directors, BellSouth
will be entitled to receive the escrow payment in full in the event that:     
 
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<PAGE>
 
     
  .  we and BellSouth fail to execute the Agreement to Sublease within 90
     days of the date of the letter agreement (and BellSouth has negotiated
     the operative documents in good faith) or     
 
  .  the Agreement to Sublease is executed but the initial closing fails to
     occur as a result of any breach of the Agreement to Sublease by us or
     CCSI or any failure of us or CCSI to satisfy the closing conditions set
     forth in the Agreement to Sublease.
   
    Upon consummation of the first closing, the escrow payment will be returned
to us. Further, if BellSouth's Board of Directors fails to approve the proposed
BellSouth transaction within the applicable time period, the escrow payment
will be returned to us. BellSouth has agreed to seek the approval of its Board
of Directors as soon as practicable, but no later than April 26, 1999.     
   
    In the event that BellSouth's Board of Directors does not approve the
proposed BellSouth transaction within 90 days of the letter agreement, and if
at any time within one year following expiration or termination of the letter
agreement BellSouth transfers, sells, assigns, leases, subleases or otherwise
disposes of all or substantially all of the tower assets contemplated by the
letter agreement, BellSouth will be required to pay to us an amount equal to
the greater of (1) $15.0 million or (2) one-half of the amount by which the
total consideration received by BellSouth pursuant to such transfer, sale,
assignment, lease or sublease exceeds the total consideration that would have
been paid to BellSouth by us pursuant to the letter agreement.     
   
    Closings. In connection with the letter agreement, we and BellSouth have
agreed that the sublease of the sites pursuant to the Sublease will be
consummated in a series of closings not to
    
exceed a period of eight months and will include a minimum number of sites to
be included in each closing, the first of which is expected to take place on
May 31, 1999. BellSouth has agreed to use all commercially reasonable efforts
to sublease approximately 250 sites at each closing, grouped so as to be
located in contiguous regions, until all sites have been subleased prior to or
at the final closing. The sites to be included on the initial closing date will
be located in Kentucky and Indiana.
   
    Termination Right. The letter agreement provides that in the event that any
one of the closings contemplated by the proposed BellSouth transaction is not
consummated due to our or CCSI's failure to comply with all conditions,
covenants and representations required of them, in addition to any other
remedies BellSouth may have at equity or law, BellSouth will have the right to
require us to pay to BellSouth a termination fee of $50.0 million to terminate
all agreements between the parties, and at BellSouth's option, to rescind all
prior closings. If BellSouth elects to rescind the prior closings, payment of
the termination fee shall be made by netting it against the amounts previously
paid to BellSouth at the previous closings, and BellSouth shall return to us
any amount which is in excess of the termination fee.     
 
Sublease
   
    Pursuant to the letter agreement, the parties fully and completely agreed
upon the terms of the Sublease.     
   
    General. Pursuant to the terms of the Sublease, BellSouth has agreed to
grant a lease to CCSI, pursuant to which CCSI will lease (or sublease) the
land, tower and improvements which we call the subleased property at each site
other than certain space reserved by BellSouth and space utilized by third
parties under existing subleases. BellSouth has agreed to lease to CCSI all its
sites in the territory except where it is legally prohibited from doing so and
except for sites that are specifically excluded from the Sublease. BellSouth
expects that the number of sites available for sublease will be approximately
1,850. The sites constructed pursuant to the build-to-suit agreement, as
described below, will also be made part of and subject to the Sublease.     
 
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<PAGE>
 
   
    Pursuant to the Sublease, CCSI will be entitled to use the subleased
property of each site for constructing, installing, operating, managing,
maintaining and marketing the tower and improvements on each site, including
leasing space to third party tenants. BellSouth has agreed to pay CCSI a site
maintenance charge of $1,200 per month per site, subject to an increase of five
percent (5%) per year for the first ten (10) years following the applicable
commencement date of the sublease on such site. If, after the tenth anniversary
following each commencement date, the then current site maintenance charge is
below the market rate, then such site maintenance charge will automatically be
increased on such anniversary and each anniversary thereafter by the consumer
price index. If the then site maintenance charge is above the market rate, then
such site maintenance charge will be automatically reset at ninety percent
(90%) of such agreed upon market rate and will increase on each following
anniversary by the then current annual market rate of increase for comparable
properties. CCSI has agreed to pay as rent to BellSouth the ground rents
relating to each site that is leased by BellSouth, and rent of $1.00 per year
for sites that are owned by BellSouth. In addition, CCSI has agreed to sublease
available space to any party to existing colocation agreements with BellSouth;
provided that CCSI will receive all rents and other economic benefits from the
parties to such colocation agreements.     
 
    Term. The term of the Sublease will be one hundred (100) years for sites
owned by BellSouth and, for sites leased by BellSouth, one day less than the
term of the underlying ground lease. CCSI will be responsible for negotiating
and obtaining extensions or renewals of the ground leases. In addition, if CCSI
is able to acquire a fee simple interest in a site, CCSI has agreed to transfer
such fee simple interest to BellSouth for $1.00, in which event CCSI will pay
no ground rent as of the date fee simple title vests in BellSouth.
   
    Reserved Space. Under the Sublease, BellSouth has reserved space on each
site. The reserved space generally relates to the portion of the site,
including space on the tower, in use by BellSouth and its affiliates. In
certain circumstances and subject to certain conditions described in the
Sublease, BellSouth has the right to increase the number of antennas on its
reserved space to 12, without increasing the related site maintenance payment,
on up to 120 towers. BellSouth also has the right to substitute the reserved
space for other available space on the tower, as well as a right of first
refusal and right of substitution as to available space which CCSI intends to
sublease to any third party.     
   
    If BellSouth ceases using its reserved space on a site and elects to
assign, sublet or otherwise transfer the interest in the reserved space on such
site, CCSI will have the right to, at any time, acquire BellSouth's interest in
the applicable reserved space by paying to BellSouth consideration of (1)
$5,000 (subject to increase based on the consumer price index) plus (2) a grant
to BellSouth of the right to receive up to thirty-five percent (35%) of all
gross revenues payable to CCSI in respect of such reserved space.     
   
    BellSouth will have the right to put to CCSI its rights in its reserved
space with respect to a site, and thereby add such space to the Sublease;
provided that the number of sites subject to such a put right may not exceed
the greater of one and one half percent (1 1/2%) or thirty (30) of the total
sites. In such event, BellSouth will assign to CCSI all its rights in the
reserved space on that site and will thereafter no longer be responsible for
the related site maintenance charge.     
   
    Withdrawal Right. After the tenth anniversary of the first closing,
BellSouth will have the right, subject to certain notice requirements, to
withdraw its rights on any site. In such case, BellSouth will assign to CCSI
all its rights, including the ground lease and any reserved space, with respect
to any withdrawn site and shall no longer be responsible for the related site
maintenance charge.     
 
    Termination. The Sublease may be terminated by each party in the event of
certain breaches by the other party, including the failure to timely make
required payments under the Sublease,
 
                                       99
<PAGE>
 
breaches of covenants and other agreements in the Sublease, breaches of
representations and warranties and insolvency. In the case of BellSouth's right
to terminate, BellSouth may terminate the Sublease as to an applicable site
following a breach (and failure to cure) relating to that particular site.
BellSouth may terminate the entire Sublease upon the occurrence of unwaived
defaults by CCSI in respect of more than fifty (50) sites during any
consecutive five-year period.
   
Build-to-Suit Agreement     
   
    In connection with the letter agreement, BellSouth agreed to enter into the
build-to-suit agreement with us and CCSI pursuant to which CCSI will develop
and construct all towers built in the territory on behalf of BellSouth for a
period of five years. If CCSI has not constructed at least 500 towers over the
five year period following the signing of the build-to-suit agreement, the term
of the build-to-suit agreement will be extended for up to an additional two
years until such time as CCSI has constructed 500 towers. BellSouth will be
required, pursuant to the build-to-suit agreement, to submit to CCSI all
proposals to develop and construct tower sites within the territory until CCSI
has completed construction of 500 towers. CCSI will be required to develop and
construct tower sites in locations that satisfy BellSouth's engineering
requirements. Upon substantial completion of a tower site, the site will become
subject to and part of the Sublease. The build-to-suit agreement will provide
that space not reserved by BellSouth on each tower will be available for lease
by CCSI to third parties.     
 
Site Maintenance Agreement
   
    In connection with the Agreement to Sublease, the parties will enter into a
site maintenance agreement whereby CCSI will perform certain identified
services at those sites in the territory which are not leased or subleased to
CCSI pursuant to the Sublease and which sites are designated by BellSouth for
inclusion in the site maintenance agreement. Pursuant to the letter agreement,
we and BellSouth have agreed that BellSouth will pay to us a site maintenance
fee of $333.00 per site per month, increased annually by the consumer price
index, for sites designated under the site maintenance agreement. Further, the
parties have agreed that the total number of sites to be covered by the site
management agreement will not exceed 100 sites.     
 
Site Marketing Agreement
   
    On March 25, 1998, we and BellSouth entered into the site marketing
agreement pursuant to which we market BellSouth's sites located in Kentucky. In
connection with the letter agreement, we agreed to renew the site marketing
agreement, the term of which ended on February 15, 1999, and to extend the
scope of the agreement to include the entire territory.     
 
Registration Rights Agreement
   
    As a condition to the letter agreement, we have agreed to enter into a
registration rights agreement whereby we will grant to BellSouth certain demand
and piggyback registration rights in respect of shares of our common stock we
pay to BellSouth as consideration for the proposed BellSouth transaction.     
 
Proposed Powertel Acquisition
   
    On March 15, 1999, we and a newly formed wholly owned indirect subsidiary
("CCP"), entered into an asset purchase agreement with Powertel, Inc. and five
of its subsidiaries (collectively, "Powertel"), pursuant to which the parties
agreed that we would purchase from Powertel approximately 650 towers and
related assets and liabilities.     
 
                                      100
<PAGE>
 
   
    We will pay to Powertel aggregate consideration of $275.0 million (subject
to adjustment based on the amount of towers actually tendered to us at closing)
for the 650 towers. At closing, Powertel will pay us a credit against the
purchase price in an aggregate amount of $383,000.00, as consideration for our
acceptance of certain towers containing site leases which may require revenue
received from Powertel or its affiliates to be shared with the site lessors. We
call the purchase price less this purchase price credit, the closing price.
Pursuant to the asset purchase agreement, we have placed $50.0 million in
escrow to be applied to the closing price. In the event that Powertel has
fulfilled all conditions precedent to closing and we are unable or unwilling to
deliver the balance of the closing price, Powertel will receive up to the full
$50.0 million as liquidated damages. See"--Asset Purchase Agreement", "--Escrow
Agreement" and "Risk Factors--We May Not Consummate the 1999 Transactions".
       
    Pursuant to the asset purchase agreement, at closing Powertel will assign
and we will assume five master site agreements, pursuant to which Powertel or
its affiliates will agree to pay us monthly rent of $1,800 per tower for
continued use of space Powertel occupies on the towers. This per tower amount
is subject to increase on each fifth anniversary of the agreement and as
Powertel adds equipment to these towers.     
   
    Although the proposed Powertel acquisition is expected to be consummated on
or before June 4, 1999, the asset purchase agreement is subject to a number of
significant conditions. There can be no assurance that the proposed Powertel
acquisition will be consummated on the terms described in this document or at
all. See "Risk Factors--We May Not Consummated the 1999 Transactions".     
   
    The following descriptions of the agreements related to the proposed
Powertel acquisition are summaries of the material portions of those
agreements. These descriptions are qualified in their entirety by reference to
the complete text of the agreements, each of which is available as set forth
under the heading "Available Information".     
 
Asset Purchase Agreement
   
    Purchase Price. Pursuant to the asset purchase agreement, we will pay the
closing price in cash on or before June 4, 1999, the closing date, to Powertel
for Powertel's tower structures, rights to tower sites, related assets and
rights under applicable governmental permits. The purchase price is subject to
adjustment up or down based on the actual number of sites tendered at closing.
The asset purchase agreement provides that sites considered defective or
incomplete, will not be tendered at closing, and consequently, the purchase
price will be reduced by an amount equal to $423,077 for each such rejected
site.     
   
    Terms and Conditions. In connection with the proposed Powertel acquisition,
we and Powertel are making certain representations and warranties which must be
true on the closing date in order for the transaction to be consummated. Other
conditions which must be satisfied on the closing date include:     
     
  .  compliance by us and Powertel with the asset purchase agreement;     
 
  .  absence of litigation;
 
  .  receipt of regulatory approvals; and
 
  .  absence of any material adverse effect with respect to the Powertel
     assets and assumed liabilities.
   
    In addition, pursuant to the asset purchase agreement, we have deposited
$50.0 million in cash, with SunTrust Bank Atlanta as escrow agent. At closing,
the escrow deposit will be delivered to Powertel and credited against the
closing price. However, we have agreed that the escrow deposit     
 
                                      101
<PAGE>
 
   
will be forfeited to Powertel in the event that we are unable to receive
adequate financing to consummate the acquisition and thus are unable to close
the acquisition in a timely manner. As a condition to the asset purchase
agreement, we have agreed to use our reasonable best efforts to have a
registration statement relating to such financing declared effective as
expeditiously as possible. Further, upon the occurrence of certain events, we
are required to provide Powertel with adequate written assurance that we have
at least one alternative financing source, which in Powertel's sole judgment
provides it assurance that we will have on hand a minimum of an additional
$225.0 million in cash to apply to the purchase price at closing. Such
financing assurance must be received by Powertel within five days of the
occurrence of certain events including:     
 
  .  our failure to file the registration statement before March 19, 1999;
 
  .  the withdrawal or abandonment of the registration statement or the
     decision not to proceed with the offerings;
 
  .  our failure to commence presentations to institutional investors by May
     15, 1999 or, after commencement of such presentations, termination or
     abandonment of such presentations and failure to proceed to pricing of
     the offerings.
   
    In the event we are required to provide Powertel with a financing
assurance, Powertel will have five days to accept or reject it. If Powertel
rejects the financing assurance, we will have ten days from receipt of the
rejection to deliver the $225.0 million balance of the closing price to the
escrow agent, who will deliver the entire closing price to Powertel at closing.
However, if we are unable or unwilling to deliver the additional sum into
escrow, Powertel will have the right to unilaterally terminate the asset
purchase agreement, and receive, as its sole remedy, from the escrow deposit
liquidated damages in the amount of $10.0 million on or prior to May 15, 1999
or $25.0 million after May 15, 1999 but prior to June 4, 1999. If on June 4,
1999, Powertel has fulfilled all of its obligations and conditions precedent to
closing in all material respects and has not defaulted or breached its
obligations under the asset purchase agreement, and we have failed to deliver
the additional sum into escrow or are otherwise unable or unwilling to deliver
the purchase price, Powertel will receive as liquidated damages the entire
amount of the escrow deposit.     
 
Master Site Agreement
   
    On the closing date, the parties to the asset purchase agreement and
certain of Powertel's affiliates will enter into master site agreements
governing all towers acquired pursuant to the asset purchase agreement.
Pursuant to the master site agreements, Powertel or certain affiliates will
agree to continue to lease the space it currently occupies on the towers to be
acquired by us. The monthly rent paid by Powertel for each tower will be
$1,800. Such monthly payment is subject to increase based on an agreed upon
schedule if and when Powertel adds equipment to a site. Nonetheless, the
monthly rent, including additional rents related to the addition of certain
equipment, shall be increased on each fifth anniversary of the agreement up to
an amount that is 115% of the rent paid during the preceding five year period.
The master site agreements provide that space not occupied by Powertel on the
acquired towers can be leased to third parties at our sole option.     
   
    Pursuant to the master site agreements, the term of each tower lease will
be ten years. Powertel has the right to extend any site lease for up to three
additional five year periods. Each site lease will automatically renew for an
option term unless Powertel notifies us of its intent not to renew at least 180
days prior to the end of the then current term.     
 
Proposed One2One Transaction
   
    On March 5, 1999, we entered into the framework agreement with One2One,
pursuant to which CTI has agreed to manage, develop and, at its option, acquire
up to 821 towers. These towers     
 
                                      102
<PAGE>
 
represent substantially all the towers in One2One's 1,800 MHz nationwide
wireless network in the United Kingdom. Approximately one-half of these 821
towers can accommodate additional tenants. We expect to upgrade or replace the
other towers as demand for space on such towers arises. We believe that the
cost of upgrading or replacing any single tower will not exceed $40,000.
   
    CTI will be responsible for managing and leasing available space on the
towers, and will receive all the income from any such third party leases. The
term of the management arrangements will be up to 25 years. During the three-
year period following the closing, CTI will have the right, at its option, to
acquire for (Pounds)1.00 per site One2One's interest in the 821 towers, to the
extent such interests can be assigned. One2One has also agreed to include as
part of the framework agreement, including CTI's right to acquire sites during
the three-year period, any new One2One towers constructed during the term of
the agreement.     
 
Framework Agreement
   
    Terms and Conditions. The 821 existing towers will be managed by CTI
pursuant to a management contract with an initial term of 10 years, which is
extendable at CTI's option for an additional 15 years. CTI will also assume all
liabilities in connection with the 821 existing towers. During the three-year
period following the closing One2One will assign to CTI, at CTI's option,
One2One's interest in the sites on which the 821 existing towers are located.
For sites where the underlying ground lease is not assignable, the management
contract will continue in effect. CTI also has the right during this three-year
option period to assume ownership of any new One2One towers which are built by
or for One2One during the option period.     
   
    Consideration. As consideration for the framework agreement, One2One will
receive varying rent-free periods of site use depending on the type of tower
site as follows:     
 
  . The 821 existing towers. One2One will enter into a 25 year site sharing
  agreement with CTI permitting One2One to continue to occupy the 821
  existing towers. This agreement will be rent-free until March 2007 (with a
  retroactive adjustment to April 1998). After the expiration of this initial
  period, One2One will pay to CTI an annually indexed rental fee (based on
  (Pounds)3,750.0 per site index adjusted from 1999) plus a further
  additional compensatory payment to CTI in the event that CTI is chosen as
  the contractor with respect to fewer than 250 new One2One sites. See "--
  One2One ADC Contract".
 
  . New One2One sites. One2One will also enter into 25 year site sharing
  agreements with CTI to occupy all new One2One towers and pay CTI an
  annually indexed rental fee (based on (Pounds)4,000.0 per site index
  adjusted from 1999) after an initial rent-free period of fifteen years.
 
  . 166 CTI towers currently under lease by One2One. One2One currently
  occupies 166 CTI sites under a master lease agreement. This master lease
  will be modified to allow One2One to occupy these sites rent-free from
  April 1998 until March 2000.
   
    The framework agreement is conditional upon the approvals of both One2One
and CTI's board of directors and senior creditors.     
 
One2One ADC Contract
   
    In connection with the framework agreement, CTI entered into a separate
contract with One2One under which CTI will provide acquisition, design and
construction services for up to 250 new One2One sites. If One2One requests
CTI's services with respect to all 250 sites, CTI will be paid aggregate fees
in excess of (Pounds)7.0 million. CTI also believes that some of the new sites
will be new builds, which are known as greenfield sites, under the framework
agreement, and thus CTI will be eligible to assume ownership of these
greenfield sites following their construction, pursuant to the terms of the
framework agreement.     
 
                                      103
<PAGE>
 
                                   MANAGEMENT
 
Directors and Executive Officers
   
    The following table sets forth certain information, as of March 1, 1999,
with respect to persons who serve as our directors or executive officers and
other key personnel:     
 
<TABLE>
<CAPTION>
          Name           Age              Positions with the Company
          ----           ---              --------------------------
 <C>                     <C> <S>
 Ted B. Miller, Jr......  47 Chief Executive Officer and Vice Chairman of the
                             Board of Directors
 David L. Ivy...........  52 President and Director
 Charles C. Green, III..  52 Executive Vice President and Chief Financial
                             Officer
 John L. Gwyn...........  50 Executive Vice President
 E. Blake Hawk..........  49 Executive Vice President and General Counsel
 Wesley D. Cunningham...  39 Senior Vice President, Corporate Controller and
                             Chief Accounting Officer
 Edward W. Wallander....  41 Senior Vice President and Chief Information Officer
 John P. Kelly..........  41 President and Chief Operating Officer of CCI
 Alan Rees..............  55 Chief Operating Officer and Director of CTSH
 George E. Reese........  48 Chief Financial Officer, Secretary and Director of
                             CTSH
 Michel Azibert.........  43 Director
 Bruno Chetaille........  44 Director
 Robert A. Crown........  44 Director
 Carl Ferenbach.........  56 Chairman of the Board of Directors
 Randall A. Hack........  51 Director
 Robert F. McKenzie.....  55 Director
 William A. Murphy......  31 Director
 Jeffrey H. Schutz......  47 Director
</TABLE>
   
    Pursuant to our certificate of incorporation and by-laws, our Board of
Directors, other than those directors who may be elected by holders of any
series of preferred stock or holders of the Class A common stock, are
classified into three classes of directors, denoted as class 1, class 2 and
class 3. Messrs. Ferenbach, Schutz and McKenzie are class 1 directors. Messrs.
Crown, Murphy and Ivy are class 2 directors, and Messrs. Hack and Miller are
class 3 directors. The terms of class 1, class 2 and class 3 directors expire
at the annual meetings of stockholders to be held in 1999, 2000 and 2001,
respectively. See "Description of Capital Stock--Certificate of Incorporation
and By-laws--Classified Board of Directors and Related Provisions". Messrs.
Azibert and Chetaille were elected to the Board of Directors by the holders of
the Class A common stock upon consummation of the Roll-Up.     
   
    Ted B. Miller, Jr. has been the Chief Executive Officer since November
1996, Vice Chairman of the Board of Directors since August 1997 and a director
of CCIC since 1995. Mr. Miller co-founded CTC in 1994. He was the President of
CCIC and CTC from November 1996 to August 1997. Mr. Miller has been the
Managing Director, Chief Executive Officer of CTI since February 1997 and has
served as Chairman of the Board of CTI since August 1998. In 1986, Mr. Miller
founded Interstate Realty Corporation, a real estate development and consulting
company, and has been its President and Chief Executive Officer since
inception. Mr. Miller is a director and/or an officer of each wholly owned
subsidiary of CCIC.     
   
    David L. Ivy has been the President of CCIC since August 1997, and was
elected as a director of CCIC in June 1997. From October 1996 to August 1997,
he served as Executive Vice President and Chief Financial Officer of CCIC.
Since 1995, he has been the President of DLI, Inc., a real estate consulting
company. From 1993 to 1995, Mr. Ivy was a senior executive with, and later the
President and Chief Operating Officer of, J. E. Robert Companies, where he
managed a joint venture with     
 
                                      104
<PAGE>
 
   
Goldman, Sachs & Co. that was established to acquire distressed assets from
financial institutions. From 1987 to 1993, Mr. Ivy served as Chairman of the
Board of Directors of Interstate. Mr. Ivy is a director of each wholly owned
subsidiary of CCIC.     
   
    Charles C. Green, III has been an Executive Vice President and Chief
Financial Officer of CCIC since September 1997. Mr. Green was the President and
Chief Operating Officer of Torch Energy Advisors Incorporated, a major energy
asset management and outsourcing company, from 1993 to 1995, and Vice Chairman
of the Board of Directors and Chief Investment Officer from 1995 to 1996. From
1992 to September 1997, he was an officer, and later the Executive Vice
President and Chief Financial Officer, of Bellwether Exploration Company, an
oil and gas exploration and production company and an affiliate of Torch. From
1982 to 1992, Mr. Green was President, Chief Operating Officer and Chief
Financial Officer of Treptow Development Company, a real estate development
company. Mr. Green currently serves on the Board of Directors of Teletouch
Communications, Inc. He has been a Chartered Financial Analyst since 1974. Mr.
Green is a director and/or officer of each wholly owned subsidiary of CCIC.
       
    John L. Gwyn has been an Executive Vice President of CCIC since August
1997. From February to August 1997, Mr. Gwyn served as Senior Vice President of
CCIC and CTC. From 1994 to February 1997, Mr. Gwyn was a Vice President and
Director of Commercial Real Estate Asset Management of Archon Group, L.P., a
real estate asset management company and a wholly owned subsidiary of Goldman,
Sachs & Co. From 1989 to 1993, he was a Senior Vice President of The Robert C.
Wilson Company, a mortgage banking company.     
 
    E. Blake Hawk has been Executive Vice President and General Counsel since
February 1999. Mr. Hawk was an attorney with Brown, Parker & Leahy, LLP in
Houston, Texas from 1980 to 1999 and became a partner with the firm in 1986.
Mr. Hawk has been board certified in tax law by the Texas Board of Legal
Specialization since 1984 and has been a Certified Public Accountant since
1976.
   
    Wesley D. Cunningham has been a Senior Vice President of CCIC since March
1999 and Chief Accounting Officer of CCIC since April 1998. He has been the
Corporate Controller of CCIC since February 1997. Mr. Cunningham was the
Assistant Corporate Controller of Drilex International Inc., an oil field
services company, from 1996 to January 1997. From 1990 to 1996, he was the
Manager of Financial Reporting of Maxxam Inc., an aluminum, forest products and
real estate company. He has been a Certified Public Accountant since 1984. Mr.
Cunningham is an officer of each wholly owned subsidiary of CCIC.     
   
    Edward W. Wallander has been Senior Vice President and Chief Information
Officer of CCIC since April 1998. From August 1990 to April 1998, Mr. Wallander
worked for PNC Bank in various capacities including Senior Vice President and
Chief Operating Officer of PNC Brokerage Corp. Prior to PNC Bank, Mr. Wallander
was a commercial real estate lender for Mellon Bank, N.A. and a Certified
Public Accountant for Ernst & Young, L.L.P.     
 
    John Kelly has been the President of CCI since December 1998. From January
1990 to July 1998, Mr. Kelly was the President and Chief Operating Officer of
Atlantic Cellular Company L.P. ("Atlantic Cellular"). From December 1995 to
July 1998, Mr. Kelly was also President and Chief Operating Officer of Hawaiian
Wireless, Inc., an affiliate of Atlantic Cellular. Mr. Kelly has served on the
board of directors of the Cellular Association of California as well as the
Vermont Telecommunications Application Center.
 
    Alan Rees has been the Chief Operating Officer of CTSH and each of its
wholly owned subsidiaries since February 1997. He was elected as a director of
CTSH and each of its wholly owned subsidiaries in May 1997. From 1994 to 1997,
Mr. Rees served as the General Manager of Transmission for the broadcast
transmission division of the BBC.
 
                                      105
<PAGE>
 
    George E. Reese has been the Chief Financial Officer and Secretary of CTSH
and each of its wholly owned subsidiaries since February 1997. He was elected
as a director of CTSH and each of its wholly owned subsidiaries in May 1997.
Since April 1995, Mr. Reese has served as President of Reese Ventures, Inc., an
international investment consulting firm, which he established in 1995. From
1972 to 1995, Mr. Reese was employed by Ernst & Young, L.L.P. where he was
named Partner In Charge of the Houston office's energy department and was
appointed Managing Partner of the firm's operations in the former Soviet Union.
Mr. Reese was a founder of the Council on Foreign Investment in Russia and was
a founding member of the American Chamber of Commerce in Russia.
   
    Michel Azibert has been a director of CCIC since August 1998. Mr. Azibert
has been International Director of TdF Parent since 1989 and Chief Executive
Officer of TdF since 1994. Mr. Azibert took an active role in the preparation
of the Media Law enacted in France in 1986. Pursuant to the governance
agreement, Mr. Azibert was elected as one of the two directors elected by the
holders of the Class A common stock.     
   
    Bruno Chetaille has been as a director of CCIC since August 1998. Mr.
Chetaille has been Chairman and Chief Executive Officer of TdF Parent since
1992. Prior to 1992, Mr. Chetaille was a technical advisor to the President of
the French Republic for four years. Pursuant to the governance agreement, Mr.
Chetaille was elected as one of the two directors elected by the holders of the
Class A common stock.     
   
    Robert A. Crown founded Crown Communications in 1980 and was President from
its inception until December 1998. Mr. Crown is Chairman of the Board of Crown
Communication Inc. and was elected as a director of CCIC in August 1997. Mr.
Crown has been responsible for the initial construction in Pittsburgh of the
Cellular One system, as well as a substantial portion of the Bell Atlantic
Mobile system in Pittsburgh. He also negotiated one of the first complete end-
to-end build-outs for Nextel for the Pittsburgh MTA. Pursuant to the
Stockholders Agreement, Mr. Crown was the nominee of the Crown Parties for
election as a director of the Company. Mr. Crown is a director of CCI and each
of its wholly owned subsidiaries.     
   
    Carl Ferenbach was elected as the Chairman of the Board of Directors of
CCIC in April 1997. Since its founding in 1986, Mr. Ferenbach has been a
Managing Director of Berkshire Partners LLC, a private equity investment firm
that manages five investment funds with approximately $1.6 billion of capital.
Mr. Ferenbach has also served as: a Managing Director of Berkshire Investors
LLC since its formation in 1996; a Managing Director of Third Berkshire
Managers LLC, the general partner of Third Berkshire Associates Limited
Partnership, the general partner of Berkshire Fund III, A Limited Partnership,
since its formation in 1997 (and was previously an individual general partner
of Berkshire Fund III since its formation in 1992); and a Managing Director of
Fourth Berkshire Associates LLC the general partner of Berkshire Fund IV,
Limited Partnership ("Berkshire Fund IV, collectively with Berkshire Fund III
and Berkshire Investors, the "Berkshire Group") since formation in 1996. In
addition, Mr. Ferenbach currently serves on the Board of Directors of Wisconsin
Central Transportation Corporation, Tranz Rail Limited, English, Welsh &
Scottish Railway Limited, Australian Transport Network Limited and U.S. Can
Corporation. Pursuant to the Stockholders Agreement, Mr. Ferenbach was the
nominee of Berkshire Group for election as a director of CCIC.     
   
    Randall A. Hack was elected as a director of CCIC in February 1997. Since
January 1995, Mr. Hack has been a member of Nassau Capital L.L.C., an
investment management firm. From 1990 to 1994, he was the President and Chief
Executive Officer of Princeton University Investment Company, which manages the
endowment for Princeton University. Mr. Hack also serves on the Board of
Directors of several private companies. Pursuant to the Stockholders Agreement,
Mr. Hack was the nominee of Nassau Group for election as a director of CCIC.
    
                                      106
<PAGE>
 
   
    Robert F. McKenzie was elected as a director of CCIC in 1996. From 1990 to
1994, Mr. McKenzie was the Chief Operating Officer and a director of OneComm,
Inc., a mobile communications provider that he helped found in 1990. From 1980
to 1990, he held general management positions with Northern Telecom, Inc. and
was responsible for the marketing and support of its Meridian Telephone Systems
and Distributed Communications networks to businesses throughout the western
United States. Mr. McKenzie also serves on the Board of Directors of Centennial
Communications Corporation.     
   
    William A. Murphy has been a director of CCIC since August 1998. Mr. Murphy
has been a Director of Mergers & Acquisitions at Salomon Smith Barney since
1997. From 1990 to 1997, Mr. Murphy held various positions in Mergers &
Acquisitions with Salomon Smith Barney.     
   
    Jeffrey H. Schutz was elected as a director of CCIC in 1995. Mr. Schutz has
been a General Partner of Centennial Fund IV and Centennial Fund V, each a
venture capital investing fund, since 1994 and 1996, respectively. Mr. Schutz
also serves on the Board of Directors of Preferred Networks, Inc. and several
other private companies. Pursuant to the Stockholders Agreement, Mr. Schutz was
the nominee of Centennial Group for election as a director of CCIC.     
 
Board Committees
   
    Our Board of Directors has an executive committee, a compensation
committee, a finance and audit committee and a nominating and corporate
governance committee. The executive committee, composed of Messrs. Azibert,
Crown, Ferenbach, Hack, Miller and Schutz, acts in lieu of the full Board in
emergencies or in cases where immediate and necessary action is required and
the full Board cannot be assembled. The compensation committee, composed of
Messrs. Ferenbach, McKenzie and Schutz, establishes salaries, incentives and
other forms of compensation for executive officers and administers incentive
compensation and benefit plans provided for employees. The finance and audit
committee, composed of Messrs. Hack, McKenzie and Murphy, reviews our audit
policies and oversees the engagement of our independent auditors, as well as
developing financing strategies for us and approving outside suppliers to
implement these strategies. The nominating and corporate governance committee,
composed of Messrs. Azibert, Ferenbach, McKenzie and Miller, is responsible for
nominating new Board members and for an annual review of Board performance.
Pursuant to the stockholders agreement, the holders of the Class A common stock
have the right to appoint at least one member to each of the executive and
nominating and corporate governance committees.     
 
Directors' Compensation and Arrangements
   
    All of our non-management directors receive compensation for their service
as directors ($15,000 and options for 5,000 shares of common stock per year),
and are reimbursed for expenses incidental to attendance at such meetings. In
September 1997, our Board of Directors approved a fee of $150,000 per annum to
the Berkshire Group (half of which is to be paid by CTI) for general consulting
services and for the services of Mr. Ferenbach as Chairman of the Board. In
addition, Mr. McKenzie received approximately $10,000 in 1996 for specific
consulting assignments requested by the Chief Executive Officer. Messrs.
Ferenbach and Schutz are indemnified by the respective entities which they
represent on our Board of Directors.     
 
                                      107
<PAGE>
 
Executive Compensation
   
    The following table sets forth the cash and non-cash compensation paid by
or incurred on behalf of us to our chief executive officer and the four other
executive officers (collectively, the "named executive officers") for each of
the three years ended December 31, 1998.     
 
                           Summary Compensation Table
 
<TABLE>
<CAPTION>
                                                            Number of
                                                           Securities  All Other
                                                           Underlying   Compen-
                                                            Options/    sation
 Name and Principal Position   Year Salary ($)   Bonus ($) SARs (#)(a)    ($)
 ---------------------------   ---- ----------   --------- ----------- ---------
 <S>                           <C>  <C>          <C>       <C>         <C>
 Ted B. Miller, Jr...........  1998  $325,000    $300,000   3,013,000   $  --
 Chief Executive Officer and   1997   281,575     626,250     625,000      --
  Vice Chairman of the Board
   of Directors                1996   152,600      75,000         --       --
 
 David L. Ivy................  1998  $225,000    $150,000   1,455,000   $  --
 President and Director        1997   200,000     300,000     250,000      --
                               1996    37,500(b)      --      175,000   35,000(c)
 
 Charles C. Green, III ......  1998  $235,000    $ 56,250     940,000   $  --
 Executive Vice President and  1997    75,000(d)      --      250,000      --
  Chief Financial Officer      1996       --          --          --       --
 
 John L. Gwyn................  1998  $185,000    $131,250     250,000   $  --
 Executive Vice President      1997   160,424(e)      --      225,000      --
                               1996       --          --          --       --
 
 Alan Rees...................  1998  $225,722(f) $    --      718,307   $  --
 Chief Operating Officer and   1997   225,722      84,646         --       --
  Director of CTSH             1996       --          --          --       --
</TABLE>
- --------
(a) All awards are for options to purchase the number of shares of common stock
    indicated.
(b) Mr. Ivy began working for CCIC on October 1, 1996, at an annual salary of
    $150,000.
(c) Mr. Ivy worked as a consultant to CCIC from May 1996 to September 1996
    before joining the Company as an employee in October 1996.
(d) Mr. Green began working for CCIC on September 1, 1997, at an annual salary
    of $225,000.
(e) Mr. Gwyn began working for CCIC on February 3, 1997, at an annual salary of
    $175,000.
(f) Mr. Rees began working for CTSH on February 28, 1997 at an annual salary of
    $225,722.
 
                                      108
<PAGE>
 
                     Option/SAR Grants In Last Fiscal Year
<TABLE>
<CAPTION>
                                        Individual Grants
                         -----------------------------------------------
                                                                         Potential Realizable
                         Number of                                         Value at Assumed
                         Securities  % of Total                            Annual Rates of
                         Underlying   Options/                               Stock Price
                          Options/      SARs                                 Appreciation
                            SARs     Granted to    Exercise               for Option Term(a)
                          Granted   Employees in   or Base    Expiration -----------------------
          Name              (#)     Fiscal Year  Price ($/Sh)    Date     5% ($)       10% ($)
          ----           ---------- ------------ ------------ ---------- ----------   ----------
<S>                      <C>        <C>          <C>          <C>        <C>          <C>
Ted B. Miller, Jr.......   700,000      5.2%        $ 2.31     1/23/08
                           328,000      2.4           7.50     1/28/08
                           210,000      1.6           5.78     4/23/08
                           140,000      1.0           2.31     4/23/08
                         1,035,000      7.7          13.00      7/1/08
                           600,000      4.5           7.50      7/1/08
 
David L. Ivy............   280,000      2.1%        $ 2.31     1/23/08
                           225,000      1.6           7.50     1/28/08
                            70,000      0.5           2.31     4/24/08
                           545,000      0.4          13.00      7/1/08
                           335,000      0.2           7.50      7/1/08
 
Charles C. Green, III...    75,000      0.5%        $ 7.50     1/28/08
                           350,000      2.5           7.50      7/1/08
                           515,000      3.8          13.00      7/1/08
 
John L. Gwyn............    40,000      0.3%        $ 7.50     1/28/08
                           175,000      1.3          13.00      7/1/08
                            35,000       .2           7.50      7/1/08
 
Alan Rees...............   116,666      0.9%        $ 2.31     1/30/08
                           116,666      0.9           3.00     1/30/08
                           116,667      0.9           3.90     1/30/08
                            28,308      0.2           0.00     5/19/08
                            90,000      0.7           7.50      7/1/08
                           250,000      1.9          13.00      7/1/08
</TABLE>
- --------
(a) The potential realizable value assumes a per-share market price at the time
    of the grant to be approximately equal to the exercise price with an
    assumed rate of appreciation of 5% and 10%, respectively, compounded
    annually for 10 years.
 
                                      109
<PAGE>
 
    The following table details the December 31, 1998 year end estimated value
of each named executive officer's unexercised stock options. All unexercised
options are to purchase the number of shares of common stock indicated.
 
              Aggregated Option/SAR Exercises In Last Fiscal Year
                         And Year-End Option/SAR Values
 
<TABLE>
<CAPTION>
                                                       Number of Securities
                                                      Underlying Unexercised Value of Unexercised
                                                             Options/        In-the-Money Options/
                                                       SARs at Year-End(#)   SARs at Year-End ($)
                         Shares Acquired    Value        Exercisable (E)/      Exercisable (E)/
          Name           on Exercise (#) Realized ($)  Unexercisable (U)(a)  Unexercisable (U)(b)
          ----           --------------- ------------ ---------------------- ---------------------
<S>                      <C>             <C>          <C>                    <C>
Ted B. Miller, Jr.......       --            --            2,868,000(E)          $         (E)
                                                           1,115,000(U)                    (U)
 
David L. Ivy............       --            --            1,275,000(E)                    (E)
                                                             605,000(U)                    (U)
 
Charles C. Green, III...       --            --              675,000(E)                    (E)
                                                             515,000(U)                    (U)
 
John L. Gwyn............       --            --              170,500(E)                    (E)
                                                             304,500(U)                    (U)
 
Alan Rees...............       --            --              118,308(E)                    (E)
                                                             599,999(U)                    (U)
</TABLE>
- --------
(a) The estimated value of exercised in-the-money stock options held at the end
    of 1998 assumes a per-share fair market value of $   and per-share exercise
    prices of $.40, $2.40, $4.20 and    as applicable.
 
Severance Agreements
   
    We have entered into severance agreements with Messrs. Miller, Ivy, Green,
Gwyn, Rees, Reese and Hawk. Pursuant to the severance agreements, we are
required to provide severance benefits to these executives if they are
terminated by us without cause (as defined in the severance agreements) or the
executives terminate with good reason (as defined in the severance agreements)
(collectively, a "qualifying termination"). The severance agreements provide
for enhanced severance benefits if the executives incur a qualifying
termination within the two-year period following a change in control (as
defined in the severance agreements). Upon a qualifying termination that does
not occur during the change in control period, an eligible executive is
entitled to (1) a lump sum payment equal to two times the sum of his base
salary and annual bonus, (2) continued coverage under specified welfare benefit
programs for two years and (3) immediate vesting of any outstanding options and
restricted stock awards. Upon a qualifying termination during the change in
control period, an eligible executive is entitled to (1) receive a lump sum
payment equal to three times the sum of his base salary and annual bonus, (2)
continued coverage under specified welfare benefit programs for three years and
(3) immediate vesting of any outstanding options and restricted stock awards.
    
Crown Arrangements
   
    We have entered into a Memorandum of Understanding with Mr. Crown and a
related services agreement. Pursuant to the services agreement, Mr. Crown has
agreed to continue to serve in a consulting capacity to (and as Chairman of)
Crown Communication for a two-year period expiring on December 9, 2000, and we
have agreed, for such two-year period, to pay Mr. Crown cash compensation of
$300,000 annually, along with certain executive perquisites. At the end of such
two-     
 
                                      110
<PAGE>
 
   
year period, we will pay Mr. Crown a severance benefit of $300,000. At the time
of entering to the memorandum of understanding, we also agreed to vest all of
Mr. Crown's existing stock options; to immediately grant Mr. Crown options to
purchase 50,000 shares of common stock at $7.50 per share; and, upon the
closing of the IPO, to grant Mr. Crown options to purchase 625,000 shares of
common stock at the price to public in the IPO ($13.00 per share).     
 
Stock Option Plans
 
  1995 Stock Option Plan
   
    We have adopted the 1995 Stock Option Plan, which was reamended on July 1,
1998. The purpose of the 1995 stock option plan is to advance our interests by
providing additional incentives and motivations which help us to attract,
retain and motivate employees, directors and consultants. The description set
forth below summarizes the general terms of the 1995 stock option plan and the
options granted pursuant to the 1995 stock option plan.     
   
    Pursuant to the 1995 stock option plan, we can grant options to purchase up
to 18,000,000 shares of common stock. Options granted under the 1995 stock
option plan may either be incentive stock options, or ISOs, under Section 422
of the Code or nonqualified stock options. The price at which a share of common
stock may be purchased upon exercise of an option granted under the 1995 stock
option plan will be determined by the Board of Directors and, in the case of
nonqualified stock options, may be less than the fair market value of the
common stock on the date that the option is granted. The exercise price may be
paid in cash, in shares of common stock (valued at fair market value at the
date of exercise), in option rights (valued at the excess of the fair market
value of the common stock at the date of exercise over the exercise price) or
by a combination of such means of payment, as may be determined by the Board.
       
    Our employees, directors or consultants (including those of our
subsidiaries and affiliates) are eligible to receive options under the 1995
stock option plan (although only certain employees are eligible to receive
ISOs). The 1995 stock option plan is administered by the Board and the Board is
authorized to interpret and construe the 1995 stock option plan. Subject to the
terms of the 1995 stock option plan, the Board is authorized to select the
recipients of options from among those eligible, to establish the number of
shares that may be issued under each option and to take any actions
specifically contemplated or necessary or advisable for the administration of
the 1995 stock option plan.     
   
    No options may be granted under the 1995 stock option plan after July 31,
2005, which is ten years from the date the 1995 stock option plan was
originally adopted and approved by our Board and stockholders. The 1995 stock
option plan will remain in effect until all options granted under the 1995
stock option plan have been exercised or expired. The Board, in its discretion,
may terminate the 1995 stock option plan at any time with respect to any shares
of common stock for which options have not been granted. The 1995 stock option
plan may be amended by the Board without the consent of our stockholders, other
than as to a material increase in benefits, an increase in the number of shares
that may be subject to options under the 1995 stock option plan or a change in
the class of individuals eligible to receive options under the 1995 stock
option plan. However, no change in any option previously granted under the 1995
stock option plan may be made which would impair the rights of the holder of
such option without the approval of the holder.     
   
    Pursuant to the 1995 stock option plan, options are exercisable during the
period specified in each option agreement or certificate; provided, however,
that no option is exercisable later than ten years from the date the option is
granted. Options generally have been exercisable over a period of ten years
from the grant date and vested in equal installments over a four or five year
period of service with us as an employee. A change in control generally
accelerates the vesting of options     
 
                                      111
<PAGE>
 
   
granted to employees and some of the options vest upon the achievement of
specific business goals or objectives. An option generally must be exercised
within 12 months of a holder ceasing to be involved as our employee, director
or consultant as a result of death and within three months if the cessation is
for other reasons; however, these periods can be extended by decision of the
Board (other than in the case of an ISO). Shares of common stock subject to
forfeited or terminated options again become available for option awards. The
Board may, subject to certain restrictions in the 1995 stock option plan (and,
in the case of an ISO, in Section 422 of the Code), extend or accelerate the
vesting or exercisability of an option or waive restrictions in an option
agreement or certificate.     
   
    The 1995 stock option plan provides that the total number of shares covered
by the 1995 stock option plan, the number of shares covered by each option, and
the exercise price per share under each option will be proportionately adjusted
in the event of a recapitalization, stock split, dividend, or a similar
transaction.     
   
    No grant of any option will constitute realized taxable income to the
grantee. Upon exercise of a nonqualified option, the holder will recognize
ordinary income in an amount equal to the excess of the fair market value of
the stock received over the exercise price paid therefor and the tax basis in
any shares of common stock received pursuant to the exercise of such option
will be equal to the fair market value of the shares on the exercise date if
the exercise price is paid in cash. We will generally have a deduction in
parity with the amount realized by the holder. We have the right to deduct and
withhold applicable taxes relating to taxable income realized by the holder
upon exercise of a nonqualified option and may withhold cash, shares or any
combination in order to satisfy or secure its withholding tax obligation. An
ISO is not subject to taxation as income to the employee at the date of grant
or exercise and we do not get a business deduction as to an ISO; provided, the
stock is not sold within two years after the ISO was granted and one year after
the ISO was exercised. The ISO is effectively taxed at capital gain rates upon
the sale of the stock by the employee. However, if the stock acquired upon
exercise of an ISO is sold within two years of the ISO grant date or one year
exercise of the date, then it is taxed the same as a nonqualified option. Upon
the exercise of an ISO, the difference between the value of the stock and the
exercise price is recognized as a preference item for alternative minimum tax
purposes.     
 
                                      112
<PAGE>
 
   
    As of December 31, 1998, options to purchase a total of 13,082,220 shares
of common stock have been granted. Options for 572,825 shares of common stock
have been exercised, options for 282,750 shares have been forfeited and options
for 12,226,645 shares remain outstanding. The following table sets forth the
exercise price and number of outstanding options as well as the number of those
options which are vested and exercisable as of December 31, 1998:     
 
<TABLE>   
<CAPTION>
                                                                                   Amount
                        Exercise                     Amount                      Vested and
                         Price                     Outstanding                   Exercisable
                        --------                   -----------                   -----------
      <S>               <C>                        <C>                           <C>
                        $0.40                         345,000                       345,000(a)
                         1.20                          43,750                        43,750
                         1.60                          50,000                        50,000
                         2.40                         175,000                       175,000
                         3.09                           5,385                           --
                         4.03                           5,385                           --
                         4.20                       1,630,625                     1,463,625
                         4.76                          23,135                        23,135
                         5.24                           5,385                           --
                         5.97                          28,000                           --
                         6.00                         107,200                       107,200
                         7.50                       5,633,030                     2,805,630
                         7.77                          28,000                           --
                        10.08                          28,000                           --
                        11.31                          75,000                           --
                        11.50                          75,000                           --
                        11.94                         125,000                           --
                        12.50                         253,750                       128,750
                        13.00                       3,590,000                        90,000
                         -----                     ----------                     ---------
       Total              N/A                      12,226,645                     5,232,090
                         =====                     ==========                     =========
</TABLE>    
- --------
       
    (a) Represents options held by Mr. Miller.     
   
    Except for the options for 23,135 shares with an exercise price of $4.76
per share and options for 3,036,250 shares with an exercise price of $7.50, the
exercise prices for all of the options were equal to or in excess of the
estimated fair value of the common stock at the dates on which the numbers of
shares and the exercise prices were determined; as such, in accordance with the
"intrinsic value based method" of accounting for stock options, we did not
recognize compensation cost related to the grant of these options. The options
for 23,135 shares with an exercise price of $4.76 were issued in 1998 in
exchange for services received from nonemployees; as such, we will account for
the issuance of these options in 1998 based on the fair value of the services
received. Options for 3,036,250 shares granted at an exercise price of $7.50
per share (which is below the estimated fair market value at the date of grant)
were included in the group of options which vested at the consummation of the
initial public offering of common stock. We will account for these options in
1998 based upon the fair market value of services received. The remaining
options for 2,731,230 shares granted at an exercise price of $7.50 per share
(which is below the estimated fair market value at the date of grant) were
granted in 1998 and generally are taken into account and vest over five years.
See "Management's Discussion and Analysis of Financial Condition and Results of
Operations--Compensation Charges Related to Stock Option Grants".     
       
    The options granted include ISOs for 627,750 shares with an exercise price
of $7.50 per share. As of December 31, 1998, ISOs for 81,250 shares have been
forfeited and none of the outstanding ISOs are exercisable.
 
  CTSH Stock Option Plans
   
    CTSH has established certain stock option plans for the benefit of its
employees. Upon consummation of the Roll-Up in August 1998, all of the
outstanding options to purchase shares of capital stock of CTSH granted
pursuant to the CTSH stock option plans were converted into and replaced by
options to purchase shares of our common stock. Our Board of Directors has
adopted     
 
                                      113
<PAGE>
 
   
each of the CTSH option plans. Options granted under the CTSH stock options
plans may be adjusted at our discretion or, in the case of options granted
under the CTSH share bonus plan (as defined), the CTSH Trustee to take into
account any variation of our share capital subject to the written confirmation
of our auditors that the adjustment in their opinion is fair and reasonable.
The description set forth below summarizes the general terms of each of the
various plans that constitute the CTSH stock options plans.     
 
    Included in CTI's operating expenses for the nine months ended September
30, 1998 are noncash compensation charges for (Pounds)2.5 million ($4.2
million) related to the issuance of stock options to certain executives and
employees.
   
    CTSH All Employee Share Option Scheme. All outstanding options granted
pursuant to the Castle Transmission Services (Holdings) Ltd. All Employee Share
Option Scheme are vested. These options may only be exercised in full and on
one occasion. Outstanding options granted pursuant to the CTSH All Employee
plan will lapse if not exercised by the earlier of:     
     
  (1) the first anniversary of the option holder's death,     
     
  (2) six months following the termination of the option holder's employment,
             
  (3) six months following the earlier of (a) a change of control, (b) the
      sanctioning by the U.K. courts of a compromise or arrangement pursuant
      to U.K. Companies Act 1985 section 425 that affects our common stock,
      (c) a person becoming bound or entitled to acquire our common stock
      under U.K. Companies Act 1985 sections 428-430 or (d) notice of a
      general meeting of our stockholders at which a resolution will be
      proposed for the purpose of our voluntary winding-up (each of the
      foregoing, a corporate event),     
     
  (4) the option holder being adjudicated bankrupt under U.K. law,     
     
  (5) the surrender of the option or     
     
  (6) the seventh anniversary of the grant.     
   
    At the time of the Roll-up there were outstanding options to purchase
285,250 shares of common stock at a price of $2.37 per share, of which an
initial refundable deposit of $1.20 per share has already been paid by each
participant. No additional options will be granted under the CTSH All Employee
plan in the future.     
   
    CTSH Management Plan. All outstanding options granted pursuant to the
Castle Transmission Services (Holdings) Ltd. Unapproved Share Option Scheme
will vest on the earlier of:     
     
  (1) March 1, 2000 or, if the option holder was not an eligible employee (as
      defined in the plan) on March 1, 1997, the third anniversary of the
      date on which the option was granted,     
     
  (2) the death of the option holder,     
     
  (3) the termination of the option holder's employment (other than a
      termination for cause, or the voluntary resignation of the option
      holder),     
     
  (4) a corporate event or     
     
  (5) the sale of the subsidiary or business of ours in which the option
      holder is employed.     
   
    Once vested, these options may be exercised in whole or in part at the
discretion of the option holder prior to the lapsing of the option. All options
granted pursuant to the CTSH management plan will lapse on the earlier of:     
     
  (1) the first anniversary of the option holder's death,     
     
  (2) six months after the termination of the option holder's employment
      (other than a termination for cause, or the voluntary resignation of
      the option holder),     
     
  (3) immediately upon any other termination of employment,     
     
  (4) six months following a corporate event,     
 
                                      114
<PAGE>
 
     
  (5) the option holder being adjudicated bankrupt under U.K. law,     
     
  (6) the surrender of the option,     
     
  (7) failure to satisfy any performance condition established by the board
      of directors of CTI or     
     
  (8) the seventh anniversary of the grant of the option.     
   
    Currently, there are outstanding options to purchase 1,649,844 shares of
common stock at prices ranging from (Pounds)1.43 ($2.39) to (Pounds)6.04
($10.08) per share. No additional options will be granted under the CTSH
management plan in the future.     
   
    CTSH Bonus Share Plan. In connection with the Castle Transmission Services
(Holdings) Ltd. Bonus Share Plan, CTSH has executed the Employee Benefit Trust,
a discretionary settlement for the benefit of past and present CTI employees,
directors and their families. CTI employees and directors are able to
participate in the CTSH Bonus Share Plan by foregoing a portion of their annual
bonuses awarded by us in consideration for options to purchase shares of our
common stock held by the CTSH Trust at predetermined prices per share depending
upon the year in which the investment is made. The predetermined price for 1997
investment was (Pounds)13.00 ($21.70) per unit (each of which will be converted
into seven shares of common stock upon consummation of the Roll-Up), and the
CTI board has determined that the predetermined price for any investment in
1998 and 1999 will be (Pounds)16.90 ($28.21) and (Pounds)21.97 ($36.68)
respectively.     
   
    All outstanding options granted pursuant to the CTSH Bonus Share Plan are
vested and may be exercised in whole or in part at the discretion of the option
holder prior to the lapsing of the option. All options will lapse on the
earlier of:     
     
  (1) the first anniversary of the option holder's death,     
     
  (2) six months after the termination of the option holder's employment,
             
  (3) six months following a corporate event,     
     
  (4) the option holder being adjudicated bankrupt under U.K. law,     
     
  (5) the surrender of the option or     
     
  (6) the seventh anniversary of the grant of the option.     
   
    In order to satisfy the demand created by the exercise of options granted
pursuant to the CTSH Bonus Share Plan, the CTSH Trustee has been granted a call
option by us to purchase up to 149,709 shares of common stock from us at a
price of (Pounds)1.86 ($3.11) per share, the funds for which are to be
contributed to the CTSH trust by CTSH (which has already provided for such
payment in its financial statements). Currently there are outstanding options
to purchase 149,709 shares of common stock from the CTSH Trustee for a nominal
sum upon exercise. CTI employees and directors continue to be able to
effectively invest a proportion of their annual bonuses in our common stock
under the CTSH Bonus Share Plan for the fiscal years 1998 and 1999. Thereafter,
no additional options will be granted under the CTSH Bonus Share Plan. Grants
under the CTSH Bonus Share Plan are determined by converting monetary awards
into options to purchase shares at predetermined prices.     
   
    CTSH Option Grants to Certain Executives. In January and April of 1998,
CTSH granted options to purchase a total of 300,000 ordinary shares and
299,700,000 preference shares of CTSH to Ted B. Miller, Jr., David L. Ivy and
George E. Reese. These options are vested in full and have converted into
options to purchase 1,890,000 shares of our common stock at an exercise price
of (Pounds)1.43 and 210,000 shares of our common stock at an exercise price of
(Pounds)3.57. Upon the Roll-Up, the exercise prices were set in U.S. dollars at
$2.31 for the (Pounds)1.43 exercise price and $5.96 for the (Pounds)3.57
exercise price.     
 
                                      115
<PAGE>
 
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
1995 Investments
   
    On January 11, 1995, Ted B. Miller, Jr., Edward C. Hutcheson, Jr.,
Centennial Fund IV, Berkshire Fund III, A Limited Partnership (via Berkshire
Fund III Investment Corp.), and certain trusts and natural persons which are
now members of Berkshire Investors LLC and J. Landis Martin collectively
invested $8,790,000 in return for CTC's common stock or, in some cases,
preferred stock or convertible notes of CTC. The proceeds received on January
11, 1995 were used by us for the acquisition of towers and ancillary assets
from PCI and for working capital.     
   
    Pursuant to a securities exchange agreement, dated as of April 27, 1995,
such parties effectively made CCIC the holding company of CTC and converted
some of the obligations of CTC into capital stock of CCIC.     
   
    As a result of the exchange of CTC capital stock for CCIC capital stock,
such parties received         shares of common stock, or, in come cases,
preferred stock, of CCIC. On July 21, 1995, Robert F. McKenzie became a party
by amendment to the securities exchange agreement and received       shares of
preferred stock.     
 
1996 Investments
   
    Pursuant to a securities purchase agreement, dated as of July 15, 1996,
among Berkshire Fund III Group, Centennial Fund IV, J. Landis Martin, Edward C.
Hutcheson, Jr., Robert F. McKenzie and us, we privately placed 864,568 shares
of our Series B convertible preferred stock, par value $.01 per share, for an
aggregate purchase price of $10,374,816. Berkshire Fund III Group paid
$6,000,000 for 500,000 shares, Centennial Fund IV paid $3,724,812 for 310,401
shares, Mr. Martin paid $500,004 for 41,667 shares, Mr. Hutcheson paid $99,996
for 8,333 shares and Mr. McKenzie paid $50,004 for 4,167 shares. The proceeds
received on July 15, 1996 were used for (a) the purchase of the towers and
microwave and specialized mobile radio businesses from Motorola in Puerto Rico,
(b) an option payment relating to the acquisition of TEA and TeleStructures and
(c) working capital.     
 
1997 Investments
   
    Pursuant to a securities purchase agreement, dated as of February 14, 1997,
among Centennial Fund V and Centennial Entrepreneurs Fund V, L.P.
(collectively, the "Centennial Fund V Investors"), Berkshire Fund IV, Limited
Partnership (via Berkshire Fund IV Investment Corp.), and certain trusts and
natural persons which are members of Berkshire Investors LLC (collectively, the
"Berkshire Fund IV Group" and, together with Berkshire Fund III Group, the
"Berkshire Partners Group"), PNC Venture Corp., Nassau Capital Partners II L.P.
("Nassau Capital"), NAS Partners I L.L.C. ("NAS Partners"), Fay, Richwhite
Communications Limited ("Fay Richwhite"), J. Landis Martin, Robert F. McKenzie
and us, we privately placed 3,529,832 shares of its Series C convertible
preferred stock, par value $.01 per share for an aggregate purchase price of
$74,126,472. Centennial Fund V Investors paid $15,464,001 for 736,381 shares,
Berkshire Fund IV Group paid $21,809,991 for 1,038,571 shares, PNC Venture
Corp. paid $6,300,000 for 300,000 shares, Nassau Group paid an aggregate of
$19,499,991 for 928,571 shares, Fay Richwhite paid $9,999,990 for 476,190
shares, Mr. Martin paid $999,999 for 47,619 shares and Mr. McKenzie paid
$52,500 for 2,500 shares. The proceeds received on February 14, 1997 were used
by us to fund a portion of our investment in CTI.     
   
    In March 1997, Edward C. Hutcheson, Jr. exercised stock options for 345,000
shares of common stock. We repurchased these shares and 308,435 shares of his
existing Class A common stock for $3,422,118.     
 
                                      116
<PAGE>
 
   
    In May 1997, in connection with our acquisition of the stock of
TeleStructures, TEA and TeleShare, Inc., we issued 535,710 shares of common
stock to the shareholders of those companies: 241,070 shares to Bruce W.
Neurohr, 241,070 shares to Charles H. Jones and 53,570 shares to Terrel W.
Pugh.     
   
    In June 1997, Messrs. Miller and Ivy received special bonuses, related to
their services in structuring and negotiating our investment in CTI, including
arranging the consortium partners who participated with us in the CTI
transaction, of $600,000 and $300,000, respectively.     
   
    In August 1997, Robert A. Crown and Barbara Crown sold the assets of Crown
Communications to, and merged CNSI and CMSI with, our subsidiaries. As
consideration for these transactions, the Crowns received a cash payment of
$25.0 million, our promissory note aggregating approximately $76.2 million,
approximately $2.3 million to pay certain taxes (part of which amount was paid
in September 1997 as a dividend to stockholders of record of CNSI on August 14,
1997), and 7,325,000 shares of common stock. In addition, we assumed
approximately $26.0 million of indebtedness of the Crown's business. We repaid
the seller note in full on October 31, 1997. Robert A. Crown and Barbara Crown
are both parties to the stockholders agreement and are subject to its
restrictions.     
   
    Pursuant to a securities purchase agreement, dated as of August 13, 1997,
among American Home Assurance Company and their affiliates, New York Life
Insurance Company, The Northwestern Mutual Life Insurance Company, PNC Venture
Corp., J. Landis Martin and us, we privately placed 292,995 shares of our
senior convertible preferred stock for an aggregate purchase price of
$29,299,500, together with warrants to purchase 585,990 shares of common stock
at $7.50 per share (subject to adjustment, including weighted average
antidilution adjustments). American Home Assurance Company and its affiliates
paid $15,099,500 for 150,995 shares and warrants to purchase 301,990 shares of
common stock. New York Life Insurance Company and The Northwestern Mutual Life
Insurance Company each paid $6,000,000 for 60,000 shares and warrants to
purchase 120,000 shares of common stock. PNC Venture Corp. paid $2,000,000 for
20,000 shares and warrants to purchase 40,000 shares of common stock. Mr.
Martin paid $200,000 for 2,000 and warrants to purchase 4,000 shares of common
stock. The proceeds received on August 13, 1997 were used by us to fund a
portion of the Crown merger and working capital.     
   
    Pursuant to a securities purchase agreement, dated as of October 31, 1997,
among Berkshire Partners Group, Centennial Fund V Investors, Nassau Group, Fay
Richwhite, Harvard Private Capital Holdings, Inc. ("Harvard"), Prime VIII, L.P.
("Prime") and the prior purchasers of senior convertible preferred stock (other
than affiliates of American Home Assurance), an additional 364,500 shares of
senior convertible preferred stock were issued for an aggregate purchase price
of $36,450,000, together with warrants to purchase 729,000 shares of common
stock at $7.50 per share (subject to adjustment, including weighted average
antidilution adjustments). Berkshire Partners Group paid $3,500,000 for 35,000
shares and warrants to purchase 70,000 shares of common stock. Centennial V
Investors paid $1,000,000 for 10,000 shares and warrants to purchase 20,000
shares of common stock. Nassau Group and Fay Richwhite each paid $2,500,000 for
25,000 shares and warrants to purchase 50,000 shares of common stock. Harvard
paid $14,950,000 for 149,500 shares and warrants to purchase 299,000 shares of
common stock. Prime paid $5,000,000 for 50,000 shares and warrants to purchase
100,000 shares of common stock. American Home Assurance Company paid $1,500,000
for 15,000 shares and warrants to purchase 30,000 shares of common stock. New
York Life Insurance Company paid $300,000 for 3,000 shares and warrants to
purchase 6,000 shares of common stock. The Northwestern Mutual Life Insurance
Company paid $4,000,000 for 40,000 shares and warrants to purchase 80,000
shares of common stock. PNC Venture Corp. paid $1,000,000 for 10,000 shares and
warrants to purchase 20,000 shares of common stock. J. Landis Martin paid
$200,000 for 2,000 shares and warrants to purchase 4,000 shares of common
stock.     
 
                                      117
<PAGE>
 
Other Transactions
   
    Robert J. Coury, a former director of Crown Communication, and Crown
Communication were party to a management consulting agreement beginning in
October 1997 through January 1999. Pursuant to a Memorandum of Understanding
dated July 3, 1998, the compensation payable pursuant to such consulting
agreement was increased to $20,000 per month and Mr. Coury was granted options
to purchase 60,000 shares of common stock at $7.50 per share. See "Management--
Executive Compensation--Crown Arrangements". We have recorded a noncash
compensation charge of $0.3 million related to the issuance of these stock
options. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations--Compensation Charges Related to Stock Option Grants". In
connection with the Crown Merger, Mr. Coury acted as financial advisor to the
Crowns and received a fee for such services, paid by the Crowns.     
   
    We lease office space in a building formerly owned by our Vice Chairman and
Chief Executive Officer. Lease payments for such office space amounted to
$313,008, $130,000 and $50,000 for the years ended December 31, 1998, 1997 and
1996, respectively. The amount of space leased increased from 6,497 square feet
at $23.80 per square foot (or $154,836 in annual rent) to 19,563 square feet at
$16.00 per square foot (or $313,008 in annual rent) pursuant to a lease
agreement effective November 1, 1997. The lease term is for a period of five
years with an option to terminate in the third year or to renew at $18.40 per
square foot. Interstate Realty Corporation, a company owned by our Vice
Chairman and Chief Executive Officer, received a commission of $62,000 in
connection with this new lease.     
   
    Crown Communication leases its equipment storage and handling facility in
Pittsburgh from Idlewood Road Property Company, a Pennsylvania limited
partnership. HFC Development Corp., a Pennsylvania corporation owned by Mr.
Crown's parents, is the general partner of Idlewood. The annual rent for the
property is $180,000.     
   
    On August 10, 1998, Michel Azibert, who was elected as a director of CCIC
in August 1998, acquired 50,000 shares of common stock from an existing
stockholder of CCIC for $6.26 per share pursuant to a purchase right assigned
to him by CCIC. We recorded a noncash compensation charge of $0.3 million
related to the transfer of the purchase right. See "Management's Discussion and
Analysis of Financial Condition and Results of Operations--Compensation Charges
Related to Stock Option Grants".     
   
    On February 28, 1997, CTI and TdF Parent entered into the CTI services
agreement pursuant to which TdF Parent agreed to provide certain consulting
services to CTI in consideration for a minimal annual fee of (Pounds)400,000
($665,120) and reimbursement for reasonable out-of-pocket expenses. TdF Parent
has agreed to, among other things, provide the services of ten executives or
engineers to CTI on a part-time basis and to provide a benchmarking review of
CTI. In addition, TdF Parent has agreed to provide additional services relating
to research, development and professional training on terms (including as to
price) to be determined. The term of the CTI Services Agreement is expected to
be extended for four additional years (to February 28, 2004) and thereafter
will be terminable on 12-month's prior notice given by CTI to TdF after
February 28, 2003.     
   
    In connection with the financing arrangements relating to the joint
venture, we paid an aggregate of $100,000 to Centennial Fund IV, L.P.,
Centennial Fund V, L.P. and Centennial Entrepreneurs Fund V, L.P.     
   
    We have entered into a memorandum of understanding with Mr. Crown and a
related services agreement. Pursuant to the services agreement, Mr. Crown
agreed to continue to serve in a consulting capacity to (and as Chairman of)
CCI for a two-year period ending December 9, 2000, and we have agreed, for such
two-year period, to pay Mr. Crown cash compensation of $300,000 annually, along
with certain executive perquisites. At the end of the two-year period, we will
pay Mr. Crown a severance benefit of $300,000.     
 
                                      118
<PAGE>
 
Agreements with TdF Related to the Roll-Up
 
Governance Agreement
   
    On August 21, 1998, we entered into a governance agreement with TdF and DFI
(the "Governance Agreement") to provide for certain rights and obligations of
each party with respect to our governance.     
 
  Super-Majority Voting Requirements
   
    In general, until August 21, 2003, a super majority vote of our Board of
Directors is required for us or any of our subsidiaries to take any of the
following actions:     
 
  .  amendments to the certificate of incorporation or by-laws;
 
  .  acquisitions or investments of more than $20.0 million;
 
  .  dispositions for more than $20.0 million;
 
  .  significant strategic alliances;
 
  .  the incurrence of debt unless certain leverage ratios have been met;
     
  .  any transaction with a party to the stockholders agreement or any of our
     affiliate;     
 
  .  the issuance of any equity securities;
     
  .  any transaction that would result in any person holding 50% or more of
     our voting securities or equity interests;     
     
  .  any sale of all or substantially all of our assets;     
     
  .  any action by us relating to our dissolution or bankruptcy; and     
     
  .  any amendments to our rights plan.     
 
  TdF Veto Rights
   
    In general, until August 21, 2003, TdF's consent will be required for us or
any of our subsidiaries to take any of the following actions:     
 
  .significant acquisitions or investments;
 
  .  strategic alliances with certain third parties; and
 
  .significant dispositions.
   
    In addition, until August 21, 2008, TdF's consent generally will be
required for us or any of our subsidiaries to take any of the following
actions:     
 
  .  amendments to the certificate of incorporation or by-laws;
     
  .  the issuance of any new class of security or of additional shares of
     Class A common stock;     
     
  .  any transaction that would result in any person holding 50% or more of
     our voting securities or equity interests;     
     
  .  any sale of all or substantially all of our assets; and     
     
  .  the issuance to any person of equity securities representing 25% or more
     of our outstanding equity securities.     
 
  TdF Preemptive Rights
   
    Except in certain circumstances, if we issue any equity securities (other
than equity that is mandatorily exchangeable for debt, such as the exchangeable
preferred stock) to any person, we must offer TdF the right to purchase, at the
same cash price and on the same other terms proposed, up to the amount of such
equity securities as would be necessary for TdF and its affiliates to maintain
their consolidated ownership percentage in us. See "Risk Factors".     
 
                                      119
<PAGE>
 
  TdF Standstill; Transfer Restrictions; Voting
 
    TdF and its affiliates will not, without the prior written consent of the
Board:
     
  .  acquire beneficial ownership of any of our voting securities if their
     ownership interest would be greater than the Relevant Percentage;     
     
  .  propose that TdF or any of its affiliates enter into any business
     combination involving us;     
     
  .  make any "solicitation" of "proxies" (as such terms are used in
     Regulation 14A promulgated under the Exchange Act) to vote or consent
     with respect to any of our voting securities in opposition to the
     recommendation of a super majority vote of the Board;     
     
  .  except in accordance with the terms of the stockholders agreement, seek
     election to or seek to place a representative on the Board or seek the
     removal of any member of the Board;     
     
  .  (a) solicit, seek to effect, negotiate with or provide nonpublic
     information to any other person with respect to or (b) otherwise make
     any public announcement or proposal with respect to, any form of
     business combination (with any person) involving a change of control of
     CCIC or the acquisition of a substantial portion of the voting
     securities and/or equity securities or assets of CCIC or any subsidiary
     of CCIC; or     
     
  .  publicly disclose any intention, plan or arrangement, or provide advice
     or assistance to any person, inconsistent with the foregoing.     
   
    In general, if TdF or any of its affiliates seek to transfer 5% or more of
our voting securities, we will have the right to purchase all, or any part in
excess of such 5%, of such voting securities for cash at the price at which
they are to be transferred. These limitations do not apply to certain
transactions including underwritten public offerings and sales under Rule 144.
       
    Whenever TdF has the right to vote any of our voting securities and a
"proxy-contest" exists or any proposal for the election of any member to the
Board has received a negative vote, which in either case, had been recommended
by a super majority vote of the Board, TdF has agreed to vote all of our voting
securities held by it in the manner recommended by a super majority vote of the
Board.     
   
    The standstill, transfer restriction and voting provisions described above
will cease to apply on or before August 21, 2003. In addition, the standstill
and voting provisions will be suspended during any period from the date of the
commencement by any person (other than TdF or any of its affiliates) of an
unsolicited offer to the date of closing, abandonment or termination of all
such offers (including any offer commenced by TdF or any member of the TdF
Group following such suspension) and will thereafter be reinstated as in effect
prior to the commencement of any such unsolicited offer.     
 
  TdF CTSH Option
   
    If (1) the Board overrides a veto by TdF of a business combination or (2)
an unsolicited offer by any person (other than TdF or any of its affiliates)
has commenced or occurred, TdF will have the option to (x) acquire for cash all
of the CTSH shares beneficially owned by us at their fair market value or (y)
sell for cash to us all of the CTSH shares and warrants beneficially owned by
TdF at their fair market value.     
   
    Immediately prior to the consummation of any business combination or
unsolicited offer, TdF may require us to purchase one-half of the shares of
Class A common stock held by TdF and its affiliates for cash at the offer price
per share of common stock pursuant to the business combination or unsolicited
offer.     
 
  Put and Call Rights
   
    TdF Put Right. Until August 21, 2000, TdF has the right to require us (1)
to purchase all (except for one CTSH Ordinary Share) of the CTSH Shares
beneficially owned by TdF and its     
 
                                      120
<PAGE>
 
   
affiliates in exchange for shares of Class A common stock at the Exchange Ratio
and (2) to issue in exchange for the TdF CTSH Warrants for a number of shares
of Class A common stock at the Exchange Ratio and 100,000 shares of Class A
common stock, subject to adjustment in certain circumstances.     
   
    Company Call Right. On August 21, 2000, unless the weighted average price
per share of common stock over the five trading days immediately preceding
August 21, 2000, is less than or equal to $12 (as adjusted for any stock split
or similar transaction), we will have the right to require TdF to transfer and
deliver to us all (except for one CTSH Ordinary Share) of the TdF CTSH Shares
and the TdF CTSH Warrants beneficially owned by TdF and its affiliates in
exchange for a number of shares of Class A common stock at the Exchange Ratio
and 100,000 shares of Class A common stock, subject to adjustment in certain
circumstances.     
 
Stockholders Agreement
   
    On August 21, 1998, we entered into the Stockholders Agreement (the
"Stockholders Agreement") with certain of our stockholders (the "Stockholders")
to provide for the certain rights and obligations of us and the Stockholders
with respect to our governance and the stockholders' shares of common stock or
Class A common stock, as the case may be.     
 
  Governance
   
    Board Representation. (a) So long as the TdF Group holds at least 5.0% of
our common stock, TdF will have the right to appoint one director and generally
will have the right to appoint two directors; (b) so long as Robert A. Crown,
Barbara Crown, certain trusts established by them and their permitted
transferees have beneficial ownership of at least 555,555 shares of common
stock, they will have the right to elect one director; (c) so long as Ted B.
Miller, Jr. and his permitted transferees maintain an ownership interest, they
will have the right to elect one director; (d) our chief executive officer will
have the right to elect one director; (e) so long as the ownership interest of
Centennial Fund IV, L.P., Centennial Fund V, L.P., Centennial Entrepreneurs
Fund V, L.P., their affiliates and respective partners is at least 5.0%, they
will have the right to elect one director; (f) so long as the ownership
interest of the Berkshire Group is at least 5.0%, they will have the right to
elect one director; (g) so long as the ownership interest of Nassau Capital
Partners II, L.P., NAS Partners I, L.L.C., their affiliates and their
respective partners is not less than the ownership interest of the Nassau Group
immediately following the closing of the IPO, the Nassau Group will have the
right to elect one director; and (h) all directors other than the designees
will be nominated in accordance with our certificate of incorporation and by-
laws.     
   
    Solicitation and Voting of Shares. With respect to each meeting of our
stockholders at which directors are to be elected, we will use our best efforts
to solicit from our stockholders eligible to vote in the election of directors
proxies in favor of the nominees selected in accordance with the provisions of
the Stockholders Agreement (including the inclusion of each director nominee in
management's slate of nominees and in the proxy statement prepared by our
management in respect of each annual meeting, vote or action by written
consent).     
   
    Each Stockholder will vote its shares in favor of the election of the
persons nominated pursuant to the provisions described in "--Board
Representation" above to serve the Board and against the election of any other
person nominated to be a director.     
   
    Committees of the Board. Each of the nominating and corporate governance
committee and the executive committee will contain, so long as TdF is
qualified, at least one director that is a TdF Designee.     
 
                                      121
<PAGE>
 
  Registration Rights; Tag Along Rights
   
    Subject to certain exceptions, limitations and the suspension of such
rights by us under certain conditions, the Stockholders have been granted
piggy-back registration rights, demand registration rights, S-3 registration
rights and tag-along rights with respect to their shares of Common Stock.     
   
    Subject to certain exceptions, if at any time Stockholders holding at least
2% of our voting securities (the "Initiating Stockholder(s)") determine to sell
or transfer 2% or more of the voting securities then issuable or outstanding to
a third party who is not an affiliate of any of the Initiating Stockholders,
Stockholders may have the opportunity and the right to sell to the purchasers
in such proposed transfer (upon the same terms and conditions as the Initiating
Stockholders) up to that number of Shares owned by such Stockholder equaling
the product of (a) a fraction, the numerator of which is the number of Shares
owned by such Stockholder as of the date of such proposed transfer and the
denominator of which is the aggregate number of Shares owned by the Initiating
Stockholders and by all Stockholders exercising tag-along rights multiplied by
(b) the number of securities to be offered.     
 
CTSH Shareholders' Agreement
 
    On August 21, 1998, CCIC, TdF and CTSH entered into a Shareholders'
Agreement to govern the relationship between CCIC and TdF as Shareholders of
CTSH (the "CTSH Shareholders' Agreement").
   
    Corporate Governance. The Board of CTSH will be comprised of six directors,
of which CCIC and TdF will each have the right to appoint and remove two
directors with the remaining two directors to be mutually agreed upon by CCIC
and TdF. CCIC has the right to nominate the chairman, chief executive officer,
chief operating officer and chief financial officer of CTSH, subject to
approval by a super majority vote of the Board of CCIC.     
   
    The affirmative vote of a majority of the Board, including a director
nominated by CCIC and a director nominated by TdF, is necessary for the
adoption of a resolution. Further, the prior written consent of each of CCIC
and TdF, in their capacities as shareholders, is required for the following
actions, among others:     
     
  .  significant acquisitions and dispositions;     
     
  .  issuance of new shares;     
     
  .  entry into transactions with shareholders, except pursuant to the CTI
     Services Agreement and/or the CTI Operating Agreement;     
     
  .  entry into new lines of business;     
     
  .  capital expenditures outside the budget;     
     
  .  entry into banking and other financing facilities;     
     
  .  entry into joint venture arrangements;     
     
  .  payment of dividends, except for (1) dividends payable in respect of
     CTSH's redeemable preferred shares and (2) dividends permitted by CTSH's
     financing facilities; and     
     
  .  establishing a public market for CTSH shares. Similar governance
     arrangements also apply to CTSH's subsidiaries.     
 
    If either CCIC or TdF vetoes a transaction (either at Board or shareholder
level), the other shareholder is entitled to pursue that transaction in its own
right and for its own account.
 
    Transfer Provisions. Subject to certain exceptions, neither CCIC nor TdF
may transfer any interest in shares held in CTSH to a third party. Transfers of
shares to affiliated companies are
 
                                      122
<PAGE>
 
   
permitted, subject to certain conditions. No shares may be transferred if such
transfer would (a) entitle the BBC to terminate either of the BBC contracts,
(b) subject CTSH to possible revocation of its licenses under the
Telecommunications Act 1984 or the Wireless Telegraphy Acts 1949, 1968 and 1998
or (c) cause CCIC or TdF to be in breach of the Commitment Agreement between
TdF, TdF Parent, the BBC and us (under which we and TdF have agreed to maintain
certain minimum ownership levels in CTSH for a period of five years). See
"Business--U.K. Operations--Significant Contracts--BBC Commitment Agreement".
       
    In addition, shares may be sold to a third party, subject to a right of
first refusal by the other party, after the later of (a) the second anniversary
of the closing of the Roll-up, and (b) the expiration of the period for the
completion of the TdF Put Right or the Company Call Right. If CCIC purchases
TdF's shares pursuant to such right of first refusal, it may elect (instead of
paying the consideration in cash) to discharge the consideration by issuing its
common stock at a discount of 15% to its market value. If the right of first
refusal is not exercised, the selling shareholder must procure and offer on the
same terms for the shares held by the other party. If the Company elects to
issue common stock to TdF pursuant to the right of first refusal, TdF will be
entitled to certain demand registration rights and tag along rights.     
   
    TdF Put Right. TdF has the right to put its shares of CTSH to CCIC for cash
(the "TdF Put Right") if there is a change of control of CCIC. Such right is
exercisable if (a) TdF has not exchanged its shares pursuant to the Governance
Agreement by the second anniversary of the closing of the Roll-Up, or (b) prior
to the second anniversary of the closing of the Roll-Up, if TdF has ceased to
be Qualified for the purposes of the Governance Agreement.     
 
    The consideration payable on the exercise of the TdF Put Right will be an
amount agreed between CCIC and TdF or, in the absence of agreement, the fair
market value as determined by an independent appraiser.
   
    TdF Exit Right. TdF also has the right after the earlier of (a) the second
anniversary of the closing of the Roll-Up, or (b) TdF ceasing to be Qualified
for purposes of the Governance Agreement, to require CCIC, upon at least six
months' notice, to purchase all, but not less than all, of the shares it
beneficially owns in CTSH (the "TdF Exit Right").     
 
    The consideration to be paid to TdF, and the manner in which it is
calculated, upon exercise of the TdF Exit Right is substantially the same as
described upon exercise of the TdF Put Right.
 
    CCIC is entitled to discharge the consideration payable on the exercise of
the TdF Exit Right either in cash or by issuing common stock to TdF at a
discount of 15% to its market value. If CCIC elects to issue common stock to
TdF on the exercise of the TdF Exit Right, TdF will be entitled to certain
demand registration rights and tag-along rights.
 
    CCIC Deadlock Right. CCIC has the right to call TdF's shares of CTSH,
subject to certain procedural requirements, for cash if, after the third
anniversary of the closing of the Roll-Up, TdF refuses on three occasions
during any consecutive six-month period to agree to the undertaking by CTSH of
certain types of transactions (including acquisitions and disposals) that would
fall within CTSH's core business (the "CCIC Deadlock Right"). The consideration
due on the exercise of the CCIC Deadlock Right is payable in cash, the fair
market value of the TdF interest to be determined in the same manner described
above upon exercise of the TdF Put or Exit Rights.
   
    CCIC Shotgun Right. Provided that TdF has not, pursuant to the Governance
Agreement, exchanged its share ownership in CTSH for shares of CCIC, CCIC may
(a) by notice expiring on August 21, 2003, or (b) at any time within 45 days of
CCIC becoming aware of a TdF Change of Control (as defined in the Governance
Agreement) offer to purchase TdF's shares in CTSH. TdF is     
 
                                      123
<PAGE>
 
required to either sell its shares or agree to purchase CCIC's shares in CTSH
at the same price contained in CCIC's offer for TdF's shares of CTSH.
 
    The consummation of any transfer of shares between CCIC and TdF pursuant to
any of the transfer provisions described above is subject to the fulfillment of
certain conditions precedent, including obtaining all necessary governmental
and regulatory consents.
 
    Termination. The Shareholders' Agreement terminates if either CCIC or TdF
ceases to be qualified. CCIC remains qualified on the condition that it holds
at least 10% of the share capital of CTSH.
 
CTI Services Agreement
   
    On February 28, 1997, CTI and TdF Parent entered into a Services Agreement
pursuant to which TdF Parent agreed to provide certain consulting services to
CTI in consideration for a minimum annual fee of (Pounds)400,000 ($665,120) and
reimbursement for reasonable out-of-pocket expenses. This agreement was amended
and restated on August 21, 1998. TdF Parent has agreed to, among other things,
provide the services of ten executives or engineers to CTI on a part-time basis
and to provide a benchmarking review of CTI. In addition, TdF Parent has agreed
to provide additional services relating to research, development and
professional training on terms (including as to price) to be determined.
Following February 28, 2003, the CTI Services Agreement will be terminable on
12-month's prior notice given by CTI to TdF.     
 
CTI Operating Agreement
   
    The following summary of the terms of the CTI Operating Agreement is
subject to the negotiation of definitive documentation, although we expect such
agreement to have the general terms described herein. Under the CTI Operating
Agreement, we will be permitted to develop business opportunities relating to
terrestrial wireless communications (including the transmission of radio and
television broadcasting) anywhere in the world except the United Kingdom. CTI
will be permitted to develop such business opportunities solely in the United
Kingdom. We and TdF also intend to establish, pursuant to the CTI Operating
Agreement, a joint venture to develop digital terrestrial transmission services
in the United States. See "Business--U.S. Operations--Network Services--
Broadcast Site Rental and Services".     
   
    The CTI Operating Agreement will also establish a framework for the
provision of business support and technical services to us and our subsidiaries
(other than CTI) in connection with the development of any international
business by us. TdF will have the right, if called upon to do so by CTSH or us,
to provide all or part of such services to us and our subsidiaries (other than
CTI) in connection with the provision of broadcast transmission services.     
 
                                      124
<PAGE>
 
                       PRINCIPAL AND SELLING STOCKHOLDERS
   
    The table below sets forth certain information, as of March 1, 1999, with
respect to the beneficial ownership of capital stock by (1) each person whom we
know to be the beneficial owner of more than 5% of any class or series of our
capital stock, (2) each of our directors and executive officers and all
directors and executive officers as a group and (3) each of the selling
stockholders. This table also gives effect to shares that may be acquired
pursuant to options and warrants, as described in the footnotes below.     
 
<TABLE>
<CAPTION>
                                                                             Shares
                                                                          Beneficially
                                                  Shares                  Owned After
                                               Beneficially                   the       Percentage of
                                            Owned Prior to the Number of     Equity     Total Voting
                                             Equity Offering    Shares      Offering     Power After
 Executive Officers and                     ------------------   Being   --------------  the Equity
      Directors(a)         Title of Class   Number(b)  Percent  Offered  Number Percent  Offering(c)
- ------------------------   --------------   ---------- ------- --------- ------ ------- -------------
<S>                       <C>               <C>        <C>     <C>       <C>    <C>     <C>
Ted B. Miller, Jr.......  Common Stock(d)    4,036,097    4.7                                4.1
David L. Ivy............  Common Stock(e)    1,395,000    1.7                                1.5
Charles C. Green, III...  Common Stock(f)      675,000      *                                  *
John L. Gwyn............  Common Stock(g)      173,000      *                                  *
John P. Kelly(h)........  Common Stock             --     --                                 --
E. Blake Hawk...........  Common Stock             --     --
Alan Rees(i)............  Common Stock(j)      188,308      *                                  *
Robert A. Crown(k)......  Common Stock(l)    5,782,500    7.0                                6.1
Michel Azibert(m).......  Common Stock(n)       60,000      *                                  *
Bruno Chetaille(o)......  Common Stock(p)       10,000      *                                  *
Carl Ferenbach(q).......  Common Stock(r)   20,740,805   24.9                               21.9
Randall A. Hack(s)......  Common Stock(t)    5,085,080    6.1                                5.4
Robert F. McKenzie(u)...  Common Stock(v)      202,500      *                                  *
William A. Murphy(w)....  Common Stock(x)       10,000      *                                  *
Jeffrey H. Schutz(y)....  Common Stock(z)    9,842,040   11.8                               10.4
Directors and Executive
 Officers as a group
 (15 persons total).....  Common Stock(aa)  48,200,330   58.5                               51.5
 
Berkshire(bb)
Berkshire Fund III, A
 Limited Partnership....  Common Stock(cc)   6,095,450    7.3                                6.5
Berkshire Fund IV,
 Limited Partnership....  Common Stock(dd)  12,996,055   15.6                               13.8
Berkshire Investors
 LLC....................  Common Stock(ee)   1,619,300    1.9                                1.7
 
Candover(ff)
Candover Investments,
 plc....................  Common Stock       2,329,318    2.8                                2.5
Candover (Trustees)
 Limited................  Common Stock         208,317      *                                  *
Candover Partners
 Limited................  Common Stock       8,792,565   10.6                                9.3
 
Centennial(gg)
Centennial Fund IV,
 L.P.(hh)...............  Common Stock       5,965,340    7.2                                6.3
Centennial Fund V,
 L.P.(ii)...............  Common Stock       3,731,285    4.5                                3.9
Centennial Entrepreneurs
 Fund V, L.P.(jj).......  Common Stock         115,415      *                                  *
 
Nassau(kk)
Nassau Capital Partners
 II, L.P................  Common Stock (ll)  5,023,825    6.0                                5.3
NAS Partners I, L.L.C...  Common Stock (mm)     31,255      *                                  *
Digital Future            Class A
 Investments B.V.(nn)     Common Stock      11,340,000  100.0                               12.0
</TABLE>
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   * Less than 1%.
 
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<PAGE>
 
(a) Except as otherwise indicated, the address of each person in this table is
    c/o Crown Castle International Corp., 510 Bering Drive, Suite 500, Houston,
    TX 77057.
   
(b) In determining the number and percentage of shares beneficially owned by
    each person, shares that may be acquired by such person pursuant to
    options, warrants or convertible stock exercisable or convertible within 60
    days of the date hereof are deemed outstanding for purposes of determining
    the total number of outstanding shares for such person and are not deemed
    outstanding for such purpose for all other stockholders. To the best of our
    knowledge, except as otherwise indicated, beneficial ownership includes
    sole voting and dispositive power with respect to all shares.     
   
(c) In determining Percentage of Total Voting Power, shares of common stock
    that may be acquired upon conversion of the Class A common stock into
    shares of common stock are taken into account.     
(d) Includes options for 2,868,000 shares of common stock. A trust for the
    benefit of Mr. Miller's children holds 99,995 shares of common stock.
(e) Includes options for 1,275,000 shares of common stock.
(f) Represents options for 675,000 shares of common stock.
(g) Includes options for 170,500 shares of common stock.
(h) Mr. Kelly's principal business address is c/o Crown Communication Inc., 375
    Southpointe Blvd., Canonsburg, PA 19317.
(i) Mr. Rees's principal business address is c/o Castle Transmission
    International Ltd., Warwick Technology Park, Heathcote Lane, Warwick
    CV346TN, United Kingdom.
(j) Includes options for 118,308 shares of common stock.
(k) Mr. Crown's principal business address is c/o Crown Communication Inc., 375
    Southpointe Blvd., Canonsburg, PA 19317.
(l) Includes 1,939,375 shares of common stock owned by Mr. Crown, 1,749,375
    shares of common stock owned by his spouse, over which she has sole voting
    and dispositive power, 125,000 shares of common stock that are jointly
    owned, 915,625 shares of common stock owned by a grantor retained annuity
    trust for Mr. Crown, 915,625 shares of common stock owned by a grantor
    retained annuity trust for Ms. Crown and options for 137,500 shares of
    common stock.
(m) Mr. Azibert's principal business address is c/o TeleDiffusion de France
    International S.A., 10 Rue d'Oradour sur Glane, 75732 Paris 15 France.
(n) Includes options for 10,000 shares of common stock.
(o) Mr. Chetaille's principal business address is c/o TeleDiffusion de France
    International S.A., 10 Rue d'Oradour sur Glane, 75732 Paris 15 France.
(p) Represents options for 10,000 shares of common stock.
(q) Mr. Ferenbach's principal business address is c/o Berkshire Partners LLC,
    One Boston Place, Suite 3300, Boston, MA 02108.
(r) Represents options for 30,000 shares of common stock and 20,710,805 shares
    of common stock beneficially owned by members of the Berkshire Group. Mr.
    Ferenbach disclaims beneficial ownership of such shares, except to the
    extent of his pecuniary interest therein.
(s) Mr. Hack's principal business address is c/o Nassau Capital LLC, 22
    Chambers St., Princeton, NJ 08542.
(t) Represents options for 30,000 shares of common stock and 5,055,080 shares
    of common stock beneficially owned by members of the Nassau Group. Mr. Hack
    disclaims beneficial ownership of such shares.
(u) Mr. McKenzie's principal business address is P.O. Box 1133, 1496 Bruce
    Creek Road, Eagle, CO 81631.
(v) Includes options for 109,375 shares of common stock.
(w) Mr. Murphy's principal business address is c/o Salomon Smith Barney,
    Victoria Plaza, 111 Buckingham Palace Road, London, England.
(x) Represents options for 10,000 shares of common stock.
   
(y) Mr. Schutz's principal business address is c/o The Centennial Funds, 1428
    Fifteenth Street, Denver, CO 80202-1318. Mr. Schutz is a general partner of
    each of Holdings IV and Holdings V. However, neither Mr. Schutz nor any
    other general partner of either Holdings IV or Holdings V, acting alone,
    has voting or investment power with respect to our securities directly
    beneficially held by Centennial Fund IV, Centennial Fund V and Centennial
    Entrepreneurs Fund, and, as a result, Mr. Schutz disclaims beneficial
    ownership of our securities directly beneficially owned by such funds,
    except to the extent of his pecuniary interest therein.     
(z) Represents options for 30,000 shares of common stock and 9,812,040 shares
    of common stock beneficially owned by members of the Centennial Group. Mr.
    Schutz disclaims beneficial ownership of such shares.
(aa) Includes options for 5,523,683 shares of common stock and warrants for
     120,000 shares of common stock.
   
(bb) Berkshire Group has approximately 22.0% of the total voting power of
     common stock. Carl Ferenbach, Chairman of our Board of Directors and a
     director of CCIC, is a Managing Director of Berkshire Investors; a
     Managing Director of Third Berkshire Managers the general partner of Third
     Berkshire Associates, the general partner of Berkshire Fund III; and a
     Managing Director of Fourth Berkshire Associates, the general partner of
     Berkshire Fund IV. The principal business address of the Berkshire Group
     is c/o Berkshire Partners LLC, One Boston Place, Suite 3300, Boston, MA
     02108-401.     
(cc) Includes warrants for 35,935 shares of common stock.
(dd) Includes warrants for 29,255 shares of common stock.
(ee) Includes warrants for 4,810 shares of common stock.
(ff) Candover Group has approximately 12.0% of the total voting power of common
     stock. G. Douglas Fairservice is a Director of each entity in the Candover
     Group. The principal business address of Candover Partners is 20 Old
     Bailey, London EC4M 7LM, United Kingdom.
 
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<PAGE>
 
(gg) Centennial Fund IV, Centennial Fund V and Centennial Enterpreneurs Fund
     collectively have had approximately 10.4% of the total voting power of
     common stock.
   
(hh) Holdings IV is the sole general partner of Centennial Fund IV, and,
     accordingly, Holdings IV may be deemed to control Centennial Fund IV and
     possess indirect beneficial ownership of our securities directly
     beneficially held by Fund IV. The principal business address of Centennial
     Fund IV and Holdings IV is 1428 Fifteenth Street, Denver, Colorado 80202-
     1318.     
   
(ii) Holdings V is the sole general partner of Centennial Fund V, and,
     accordingly, Holdings V may be deemed to control Centennial Fund V and
     possess indirect beneficial ownership of our securities directly
     beneficially held by Centennial Fund V. The principal business address of
     Centennial Fund V and Holdings V is 1428 Fifteenth Street, Denver,
     Colorado 80202-1318.     
   
(jj) Holdings V is the sole general partner of Centennial Entrepreneurs Fund V,
     and, accordingly, may be deemed to control Centennial Entrepreneurs Fund V
     and possess indirect beneficial ownership of our securities directly
     beneficially held by Centennial Entrepreneurs Fund V. The principal
     business address of Centennial Entrepreneurs V is 1428 Fifteenth Street,
     Denver, Colorado 80202-1318.     
   
(kk) Nassau Group has approximately 5.3% of the total voting power of common
     stock. Randall Hack, a director of CCIC, is a member of Nassau Capital
     L.L.C., an affiliate of Nassau Group. The principal business address of
     Nassau Capital Partners II, L.P. is 22 Chambers Street, Princeton, NJ
     08542.     
(ll) Includes warrants for 49,690 shares of common stock.
(mm) Includes warrants for 310 shares of common stock.
   
(nn) Digital Future Investments B.V. is an affiliate of TeleDiffusion de France
     International S.A. TdF will retains ownership of 20% of the shares of
     capital stock of CTSH. Pursuant to the share exchange agreement and
     subject to certain conditions, TdF has the right to exchange its shares of
     capital stock of CTSH for 17,443,500 shares of our Class A common stock
     (which is convertible into 17,443,500 shares of common stock). DFI
     currently has 12.0% of the total voting power of common stock. Combined,
     TdF and DFI would have 25.7% of the Voting Power of common stock. The
     principal business address of DFI is c/o TeleDiffusion de France
     International S.A., 10 Rue d'Oradour sur Glane, 75732 Paris 15 France.
         
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<PAGE>
 
                          DESCRIPTION OF CAPITAL STOCK
   
    The following summary of the material terms and provisions of our capital
stock does not purport to be complete and is subject to the detailed provisions
of, and qualified in its entirety by reference to, our certificate of
incorporation and by-laws, the certificate of designations, the governance
agreement, the stockholders' agreement, the CTSH shareholders agreement, and to
the applicable provisions of the Delaware General Corporation Law.     
 
General
   
    Our authorized capital stock consists of 600,000,000 shares of common
stock, par value $.01 per share, 90,000,000 shares of Class A common stock, par
value $.01 per share, and 10,000,000 shares of preferred stock, par value $.01
per share. There are 94,905,902 shares of common stock outstanding, 11,340,000
shares of Class A common stock outstanding and 201,063 shares of 12 3/4% Senior
Exchangeable Preferred Stock due 2010.     
 
Common Stock
 
Voting Rights
   
    Each share of common stock is entitled to one vote. The common stock votes
together as a single class on all matters presented for a vote of the
stockholders, except as provided under the Delaware General Corporation Law.
All the outstanding shares of common stock are held by directors, executive
officers, other employees and our affiliates.     
   
Dividends and Liquidation Rights     
   
    Each share of common stock is entitled to receive dividends if, as and when
declared by the Board of Directors out of funds legally available for that
purpose, subject to approval of certain holders of the senior convertible
preferred stock. In the event of our dissolution, after satisfaction of amounts
payable to our creditors and distribution of any preferential amounts to the
holders of outstanding senior convertible preferred stock, if any, holders of
common stock are entitled to share ratably in the assets available for
distribution to the stockholders.     
       
Other Provisions
   
    There are no preemptive rights to subscribe for any additional securities
which we may issue, and there are no redemption provisions or sinking fund
provisions applicable to the common stock. All outstanding shares of common
stock are legally issued, fully paid and nonassessable.     
 
Class A Common Stock
 
Voting Rights
   
    Each share of Class A common stock is entitled to one vote for each such
share on all matters presented to the stockholders, except the election of
directors. The holders of the shares of Class A common stock vote, except as
provided under the Delaware General Corporation Law, together with the holders
of the common stock and any other class or series of our stock accorded such
general voting rights, as a single class.     
   
    So long as TdF is qualified, holders of shares of Class A common stock
voting as a separate class have the right to elect two directors to our board
of directors; provided, however, that if TdF is not qualified, so long as the
ownership interest of the TdF Group is at least 5%, holders of Class A common
stock voting as a separate class have the right to elect one director.     
 
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<PAGE>
 
   
    The holders of Class A common stock, subject to limitations, have a veto
over certain significant actions, described in "Certain Relationships and
Related Transactions--Agreements with TdF Related to the Roll-Up--Governance--
TdF Veto Rights", taken by us.     
 
Convertibility
   
    Each share of Class A common stock is convertible, at the option of its
record holder, into one share of common stock at any time.     
   
    In the event of any transfer of any share of Class A common stock to any
person other than an Affiliate (as defined in Rule 12b-2 of the Exchange Act),
such share of Class A common stock automatically converts, without any further
action, into one share of common stock; provided, however, and subject to
certain conditions described in our certificate of incorporation, that a holder
of shares of Class A common stock may pledge its shares to a financial
institution pursuant to a bona fide pledge of such shares of Class A common
stock as collateral security for any indebtedness or other obligation of any
person due to the pledgee or its nominee.     
   
    Further, each share of Class A common stock automatically converts into one
share of common stock on the first date on which the ownership interest of TdF
Group is less than 5%.     
   
Dividends and Liquidation Rights     
   
    Holders of shares of Class A common stock are entitled to the same
dividends and liquidation rights as holders of shares of common stock.     
 
Other Provisions
   
    Pursuant to the governance agreement, so long as it remains qualified, TdF
has anti-dilutive rights in connection with maintaining a certain percentage of
voting power in us and, accordingly, we may not, subject to certain exceptions
relating primarily to compensation of directors and employees, issue, sell or
transfer additional securities (except for the IPO) unless TdF is offered the
right to purchase, at the same price, an amount such that it would maintain
such percentage of voting power in CCIC. All outstanding shares of Class A
common stock are legally issued, fully paid and nonassessable.     
 
PREFERRED STOCK
   
    Pursuant to our certificate of incorporation, we may issue up to 10,000,000
shares of preferred stock in one or more series. Our Board of Directors has the
authority, without any vote or action by the stockholders (other than any
rights of TdF under the governance agreement), to create one or more series of
preferred stock up to the limit of our authorized but unissued shares of
preferred stock and to fix their designations, preferences, rights,
qualifications, limitations and restrictions, including the voting rights,
dividend rights, dividend rate, conversion rights, terms of redemption
(including sinking fund provisions), redemption price or prices, liquidation
preferences and the number of shares constituting any series. See "Risk
Factors--We May Not Have Sufficient Funds to Repurchase the Exchangeable
Preferred Stock or the Exchange Debentures Upon a Change of Control".     
       
SENIOR PREFERRED WARRANTS
   
    In connection with the offering of the senior convertible preferred stock
in August 1997 and October 1997, we issued warrants to purchase an aggregate of
1,314,990 shares of common stock at a price of $7.50 per share.     
 
CERTIFICATE OF INCORPORATION AND BY-LAWS
   
    Stockholders' rights and related matters are governed by the Delaware
General Corporation Law, and our certificate of incorporation and the by-laws.
Certain provisions of our certificate of incorporation and by-laws, which are
summarized below, may have the effect, either alone or in combination with each
other, of discouraging or making more difficult a tender offer or takeover     
 
                                      129
<PAGE>
 
   
attempt that is opposed by our board of directors but that a stockholder might
consider to be in its best interest. Such provisions may also adversely affect
prevailing market prices for the common stock. We believe that such provisions
are necessary to enable us to develop our business in a manner that will foster
our long-term growth without disruption caused by the threat of a takeover not
deemed by our board of directors to be in our best interests and those of our
stockholders.     
 
Classified Board of Directors and Related Provisions
   
    Our certificate of incorporation provides that our directors, other than
those directors who may be elected by holders of any series of preferred stock
or holders of the Class A common stock, initially are to be divided into three
classes of directors, initially consisting of three, three and four directors.
One class of directors, initially consisting of three directors, will be
elected for a term expiring at the annual meeting of shareholders to be held in
2000, another class initially consisting of three directors will be elected for
a term expiring at the annual meeting of stockholders to be held in 2000, and
another class initially consisting of four directors shall be initially elected
for a term expiring at the annual meeting of stockholders in 2001. The
classified board provisions will prevent a party who acquires control of a
majority of our outstanding voting stock from obtaining control of our board of
directors until the second annual stockholders meeting following the date such
party obtains the controlling interest. Voting stock is defined in our
certificate of incorporation as the outstanding shares of our capital stock
entitled to vote in a general vote of our stockholders as a single class with
shares of common stock, which shares of capital stock include the shares of
Class A common stock.     
 
No Stockholder Action by Written Consent; Special Meeting
   
    The certificate of incorporation prohibits stockholders (other than holders
of Class A common stock with respect to matters upon which such holders are
entitled to vote as a separate class) from taking action by written consent in
lieu of an annual or special meeting and, thus, stockholders may only take
action at an annual or special meeting called in accordance with our by-laws.
The by-laws provide that special meetings of stockholders may only be called by
our Secretary at the direction of our Board of Directors pursuant to a
resolution adopted by the board.     
   
    These provisions could have the effect of delaying consideration of a
stockholder proposal until the next annual meeting. The provisions would also
prevent the holders of a majority of the voting power of our capital stock
entitled to vote from unilaterally using the written consent procedure to take
stockholder action.     
 
Advance Notice Requirements for Stockholder Proposals and Director Nominations
   
    Our by-laws establish advance notice procedures with regard to stockholder
proposals and the nomination, other than by or at the direction of the board of
directors, of candidates for election as directors. These procedures provide
that the notice of stockholder proposals and stockholder nominations for the
election of directors at an annual meeting must be in writing and received by
our Secretary no less than 90 days nor more than 120 days prior to the first
anniversary of the preceding year's annual meeting; provided, however, that
with respect to the annual meeting to be held in 1999, the anniversary date
shall be deemed to be April 1, 1999; provided further that in the event that
the date of the annual meeting is advanced by more than 30 days, or delayed by
more than 90 days, from such anniversary date, notice by the stockholder to be
timely must be delivered not earlier than the 120th day prior to such annual
meeting and not later than the close of business on the later of the 90th day
prior to such annual meeting or the 10th day following the day on which public
disclosure of the date of the annual meeting was made. The notice of
nominations for the election of directors must set forth certain information
with respect to the stockholder giving the notice and with respect to each
nominee.     
 
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<PAGE>
 
   
    By requiring advance notice of nominations by stockholders, the foregoing
procedures will afford our board of directors an opportunity to consider the
qualifications of the proposed nominees and, to the extent deemed necessary or
desirable by the board of directors, to inform stockholders about such
qualifications. By requiring advance notice of other proposed business, such
procedures will provide our board of directors with an opportunity to inform
stockholders, prior to such meetings, of any business proposed to be conducted
at such meetings, together with any recommendations as to the board of
directors' position regarding action to be taken with respect to such business,
so that stockholders can better decide whether to attend such a meeting or to
grant a proxy regarding the disposition of any such business.     
 
Dilution
   
    Our certificate of incorporation provides that our board of directors is
authorized to create and issue, whether or not in connection with the issuance
and sale of any of its stock or other securities or property, rights entitling
the holders to purchase from us shares of stock or other securities of us or
any of other corporation, recognizing that, under certain circumstances, the
creation and issuance of such rights could have the effect of discouraging
third parties from seeking, or impairing their right to seek, to acquire a
significant portion of our outstanding securities, to engage in any transaction
which might result in a change of control of the corporation or to enter into
any agreement, arrangement or understanding with another party to accomplish
the foregoing or for the purpose of acquiring, holding, voting or disposing of
any of our securities.     
       
Amendments
   
    Our certificate of incorporation and by-laws provide that we may at any
time and from time to time, amend, alter, change or repeal any provision
contained in our certificate of incorporation or a preferred stock designation;
provided, however, the affirmative vote of the holders of at least 80% of the
voting power of the then outstanding voting stock, voting together as a single
class, is required to amend, repeal or adopt any provision inconsistent with
certain provisions our certificate of incorporation, including the provisions
referred to above relating to the classification of our board of directors,
prohibiting stockholder action by written consent, and prohibiting the calling
of special meetings by stockholders.     
   
    Our by-laws may be amended by either the holders of 80% of the voting power
of the voting stock or by the majority of the board; provided that the board
may alter, amend or repeal or adopt new by-laws in conflict with certain
provisions thereof by a two-thirds vote of the entire board.     
 
Rights Plan
 
Rights
   
    Our board of directors has declared a dividend of one right for each
outstanding share of common stock and each outstanding share of Class A common
stock. Rights have been issued in connection with each outstanding share of
common stock and Class A common stock; and rights will be issued in connection
with common stock and Class A Common Stock issued thereafter until the
distribution date, and, in certain circumstances, with respect to common stock
and Class A common stock issued after the distribution date referred to below.
Each right, when it becomes exercisable as described below, will entitle the
registered holder to purchase from us one one-thousandth (1/1000th) of a share
of Series A Participating Cumulative Preferred Stock (the "Preferred Shares")
at a price of $110.00 per (1/1000th) of a share, subject to adjustment in
certain circumstances (the "Purchase Price"). The description and terms of the
rights are set forth in a rights agreement between us and the rights agent
named therein. The rights will not be exercisable until the distribution date
and will expire on the tenth annual anniversary of the rights agreement, unless
earlier redeemed by us. Until     
 
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a right is exercised, the holder thereof, as such, will have no rights as a
stockholder of us, including the right to vote or to receive dividends with
respect to the rights or the Preferred Shares relating thereto.     
 
Distribution Date
   
    Under the rights agreement, the "distribution date" is the earlier of (1)
such time as we learn that a person or group (including any affiliate or
associate of such person or group) has acquired, or has obtained the right to
acquire, beneficial ownership of more than 15% of our outstanding voting
securities (such person or group being an "acquiring person"), subject to the
exceptions relating to the TDF Group and the Berkshire Group described in the
paragraph below, unless provisions preventing accidental triggering of the
distribution of the rights apply, and (2) the close of business on such date,
if any, as may be designated by our board of directors following the
commencement of, or first public disclosure of an intent to commence, a tender
or exchange offer for more than 15% or more of the outstanding shares of voting
securities.     
   
    Each member of the TdF Group will not otherwise be considered an acquiring
person if (a) during the first five years following the adoption of the rights
agreement, the aggregate ownership interest of the TdF Group does not exceed
25% (or 30% if the board so elects) of the outstanding voting securities or (b)
thereafter, the aggregate ownership interest of the TdF Group does not exceed
the lesser of (1) 25% or 30%, as applicable, of the voting securities then
outstanding and (2) the greater of (x) the aggregate interest of the TdF Group
as of the fifth anniversary of the rights agreement and (y) 15% of the then
outstanding voting securities. Each member of the Berkshire Group will not
otherwise be deemed an acquiring person if the aggregate ownership interest of
the Berkshire Group does not exceed the greater of (a) the aggregate ownership
interest of the Berkshire Group upon the execution of the rights agreement,
reduced by an amount equal to any disposition of voting securities following
the date the rights agreement is executed and (b) 15% of the outstanding voting
securities.     
 
Triggering Event and Effect of Triggering Event
   
    At such time as there is an acquiring person, the rights will entitle each
holder (other than such acquiring person) of a right to purchase, at the
Purchase Price, that number of one-thousandths (1/1000ths) of a Preferred Share
equivalent to the number of shares of common stock that at the time of such
event would have a market value of twice the Purchase Price.     
   
    In the event we are acquired in a merger or other business combination by
an acquiring person or an affiliate or associate of an acquiring person that is
a publicly traded corporation or 50% or more of our assets or assets
representing 50% or more of our revenues or cash flow are sold, leased,
exchanged or otherwise transferred (in one or more transactions) to an
acquiring person or an affiliate or associate of an acquiring person that is a
publicly traded corporation, each right will entitle its holder (other than
rights beneficially owned by such acquiring person or its affiliates or
associates) to purchase, for the Purchase Price, that number of common shares
of such corporation which at the time of the transaction would have a market
value or, in certain circumstances, book value of twice the Purchase Price. In
the event we are acquired in a merger or other business combination by an
acquiring person or an affiliate or associate of an acquiring person that is
not a publicly traded entity or 50% or more of our assets or assets
representing 50% or more of our revenues or cash flow are sold, leased,
exchanged or otherwise transferred (in one or more transactions) to an
acquiring person or affiliate or associate of an acquiring person that is not a
publicly traded entity, each right will entitle its holder (subject to the next
paragraph) to purchase, for the Purchase Price, at such holder's option, (1)
that number of shares of the surviving corporation in the transaction with such
entity (which surviving corporation could be us) which at the time of the
transaction would have a book value of twice the Purchase Price, (2) that
number of shares of the ultimate parent of or entity     
 
                                      132
<PAGE>
 
   
controlling such surviving corporation which at the time of the transaction
would have a book value of twice the Purchase Price or (3) if such entity has
an affiliate which has publicly traded common shares, that number of common
shares of such affiliate which at the time of the transaction would have market
value of twice the Purchase Price.     
   
    Any rights that are at any time beneficially owned by an acquiring person
(or any affiliate or associate of an acquiring person) will be null and void
and nontransferable and any holder of any such right (including any purported
transferee or subsequent holder) will be unable to exercise or transfer any
such right.     
 
Redemption
   
    At any time prior to the earlier of (1) such time as a person or group
becomes an acquiring person and (2) the Expiration Date, our board of directors
may redeem the rights in whole, but not in part, at a price (in cash or common
stock or other securities of ours deemed by our board of directors to be at
least equivalent in value) of $.01 per right (which amount shall be subject to
adjustment as provided in the rights agreement). Immediately upon the action of
our board of directors ordering the redemption of the rights, and without any
further action and without any notice, the right to exercise the rights will
terminate and the only right of the holders of rights will be to receive the
redemption price.     
   
    In addition, at any time after there is an acquiring person, our board of
directors may elect to exchange each right for consideration per right
consisting of one-half of the securities that would be issuable at such time
upon exercise of one right pursuant to the terms of the rights agreement.     
 
Amendment
   
    At any time prior to the distribution date, we may, without the approval of
any holder of any rights, supplement or amend any provision of the rights
agreement (including the date on which the Expiration Date or distribution date
shall occur, the definition of acquiring person, the time during which the
rights may be redeemed or the terms of the Preferred Shares), except that no
supplement or amendment shall be made which reduces the redemption price (other
than pursuant to certain adjustments therein).     
 
Certain Effects of the Rights Plan
   
    The rights plan is designed to protect our stockholders in the event of
unsolicited offers to acquire us and other coercive takeover tactics which, in
the opinion of our board of directors, could impair its ability to represent
stockholder interests. The provisions of the rights plan may render an
unsolicited takeover of us more difficult or less likely to occur or might
prevent such a takeover, even though such takeover may offer our stockholders
the opportunity to sell their stock at a price above the prevailing market rate
and may be favored by a majority of our stockholders.     
 
Section 203 of the Delaware General Corporation Law
   
    Section 203 of the Delaware General Corporation Law prohibits certain
transactions between a Delaware corporation and an "interested stockholder",
which is defined as a person who, together with any affiliates and/or
associates of such person, beneficially owns, directly or indirectly, 15% or
more of the outstanding voting shares of a Delaware corporation. This provision
prohibits certain business combinations (defined broadly to include mergers,
consolidations, sales or other dispositions of assets having an aggregate value
of 10% or more of the consolidated assets of the corporation, and certain
transactions that would increase the interested stockholder's proportionate
share ownership in the corporation) between an interested stockholder and a
corporation for a period     
 
                                      133
<PAGE>
 
   
of three years after the date the interested stockholder acquired its stock,
unless: (1) the business combination is approved by the corporation's board of
directors prior to the date the interested stockholder acquired shares; (2) the
interested stockholder acquired at least 85% of the voting stock of the
corporation in the transaction in which it became an interested stockholder; or
(3) the business combination is approved by a majority of the board of
directors and by the affirmative vote of two-thirds of the outstanding voting
stock owned by disinterested stockholders at an annual or special meeting. A
Delaware corporation, pursuant to a provision in its certificate of
incorporation or by-laws, may elect not to be governed by Section 203 of the
Delaware General Corporation Law. We are subject to the restrictions imposed by
Section 203.     
   
    Under certain circumstances, Section 203 makes it more difficult for a
person who could be an "interested stockholder" to effect various business
combinations with a corporation for a three-year period, although the
stockholders may elect to exclude a corporation from the restrictions imposed
thereunder. Our certificate of incorporation does not exclude us from the
restrictions imposed under Section 203 of the Delaware General Corporation Law.
It is anticipated that the provisions of Section 203 of the Delaware General
Corporation Law may encourage companies interested in acquiring us to negotiate
in advance with the board of directors, since the stockholder approval
requirement would be avoided if a majority of the directors then in office
approves, prior to the date on which a stockholder becomes an interested
stockholder, either the business combination or the transaction which results
in the stockholder becoming an interested stockholder.     
 
Limitations of Directors' Liability
   
    Our certificate of incorporation provides that none of our director will be
personally liable to us or our stockholders for monetary damages for breach of
fiduciary duty as a director except for liability:     
     
  (1) for any breach of the director's duty of loyalty to us or our
      stockholders,     
 
  (2) for acts of omissions not in good faith or which involve intentional
      misconduct or a knowing violation of law,
     
  (3) under Section 174 of the Delaware General Corporation Law, or     
     
  (4) for any transaction from which the director derived an improper
      personal benefit. The effect of these provisions will be to eliminate
      our rights and our stockholders (through stockholders' derivatives
      suits on behalf of us) to recover monetary damages against a director
      for breach of fiduciary duty as a director (including breaches
      resulting from grossly negligent behavior), except in the situations
      described above. These provisions will not limit the liability of
      directors under federal securities laws and will not affect the
      availability of equitable remedies such as an injunction or rescission
      based upon a director's breach of his duty of care.     
 
Transfer Agent
 
    The Transfer Agent and Registrar for the common stock is ChaseMellon
Shareholder Services, L.L.C.
 
                                      134
<PAGE>
 
                      DESCRIPTION OF CERTAIN INDEBTEDNESS
 
Senior Credit Facility
   
    Pursuant to the amended and restated loan agreement dated as of July 10,
1998, two wholly owned subsidiaries of CCIC, CCI and Crown Castle International
Corp. de Puerto Rico (collectively, the "Borrowers"), have entered into the
senior credit facility with a group of banks and other financial institutions
led by Key Corporate Capital Inc. and PNC Bank, National Association, as
arrangers and agents. The following summary of certain provisions of the senior
credit facility does not purport to be complete and is subject to, and is
qualified in its entirety by reference to, the provisions of the senior credit
facility.     
   
    The senior credit facility provides for revolving credit loans in an
aggregate principal amount not to exceed $100.0 million, for working capital
needs, acquisitions and general corporate purposes. The senior credit facility
includes a $5.0 million sublimit available for the issuance of letters of
credit. As of March 1, 1999, Crown Communication and its subsidiaries had
unused borrowing availability under the senior credit facility of $54.0
million.     
   
    The loan commitment under the senior credit facility reduces by $5.0
million commencing March 31, 2001 and by $5.0 million each calendar quarter
thereafter until December 31, 2004, when the senior credit facility matures. In
addition, the senior credit facility provides for mandatory reduction of the
loan commitment and mandatory prepayment with the:     
     
  (1) net proceeds of certain asset sales,     
     
  (2) net proceeds of certain required capital contributions to Crown
      Communication by CCIC relating to the proceeds from the sale of equity,
      convertible or debt securities, subject to certain exceptions,     
     
  (3) net proceeds of any unused insurance proceeds and     
     
  (4) a percentage of the excess cash flow of the Borrowers, commencing with
      the calendar year ending December 31, 2000.     
   
    The Borrowers' obligations under the senior credit facility are guaranteed
by each direct and indirect majority owned subsidiary of Crown Communication
and are also secured by (1) a pledge by the Borrowers of all of the outstanding
capital stock of each of their respective direct subsidiaries and (2) a
perfected first priority security interest in substantially all of the personal
property of the Borrowers and their subsidiaries. In addition, the senior
credit facility is guaranteed on a limited recourse basis by CCIC, limited in
recourse to the collateral pledged by CCIC (the capital stock of Crown
Communication).     
   
    The loans under the senior credit facility bear interest, at the Borrowers'
option, at either (A) a "base rate" equal to KeyCorp's prime lending rate plus
an applicable spread ranging from 0% to 1.5% (determined based on a leverage
ratio) or (B) a "LIBOR rate" plus an applicable spread ranging from 1.0% to
3.25% (determined based on a leverage ratio). Following the occurrence and
during the continuance of an event of default under the senior credit facility,
the loans bear interest at the "base rate" plus 3.5%.     
   
    The senior credit facility contains a number of covenants that, among other
things, restrict the ability of the Borrowers and their respective subsidiaries
to dispose of assets, incur additional indebtedness, incur guaranty
obligations, repay subordinated indebtedness except in accordance with the
subordination provisions, pay dividends or make capital distributions, create
liens on assets, enter into leases, make investments, make acquisitions, engage
in mergers or consolidations, make capital expenditures, engage in certain
transactions with subsidiaries and affiliates and otherwise restrict corporate
activities. In addition, the senior credit facility will require compliance
with certain financial covenants, including requiring the Borrowers and their
respective subsidiaries to maintain a maximum ratio of indebtedness to
operating cash flow, a minimum ratio of operating cash flow to fixed charges, a
minimum ratio of operating cash flow to projected debt service and a minimum
ratio of operating     
 
                                      135
<PAGE>
 
cash flow to interest expense. CCIC does not expect that such covenants will
materially impact the ability of the Borrowers and their respective
subsidiaries to operate their respective businesses.
   
    Pursuant to the terms of the senior credit facility, Crown Communication is
entitled to pay dividends or make distributions to CCIC in order to permit CCIC
to pay its out-of-pocket costs for corporate development and overhead and to
pay cash interest on certain indebtedness of CCIC (including the 10 5/8%
discount notes); provided that the amount of such dividends or distributions
does not exceed (1) $6.0 million in any year ending on or prior to October 31,
2002 or (2) $33.0 million in any year thereafter. The senior credit facility
also allows Crown Communication to pay dividends or distribute cash to CCIC to
the extent required to pay taxes allocable to the Borrowers and their
respective subsidiaries. All of the above-mentioned dividends or distributions,
however, including dividends or distributions that are intended to pay interest
on the 10 5/8% discount notes, may not be made by Crown Communication so long
as any default or event of default exists under the senior credit facility.
       
    The senior credit facility contains customary events of default, including
the failure to pay principal when due or any interest or other amount that
becomes due within two days after the due date thereof, any representation or
warranty being made by the Borrowers that is incorrect in any material respect
on or as of the date made, a default in the performance of any negative
covenants or a default in the performance of certain other covenants or
agreements for a period of thirty days, default in certain other indebtedness,
certain insolvency events and certain change of control events. In addition, a
default under the 10 5/8% Notes Indenture will result in a default under the
senior credit facility.     
 
CTI Credit Facility
   
    Pursuant to the loan amendment agreement dated May 21, 1997, among CTI, as
borrower, CTSH, as guarantor, Credit Suisse First Boston, as arranger and
agent, and J.P. Morgan Securities Ltd., as co-arranger, CTI's (Pounds)162.5
million term and revolving loan facilities were amended to a (Pounds)64.0
million revolving loan facility. The following summary of certain provisions of
the CTI credit facility does not purport to be complete and is subject to, and
is qualified in its entirety by reference to, the provisions of the CTI credit
facility.     
   
    The CTI credit facility provides for revolving credit loans in an aggregate
principal amount not to exceed (Pounds)64.0 million to finance capital
expenditures in respect of digital terrestrial television with up to
(Pounds)46.5 million of such amount available for working capital needs and for
general corporate purposes. As of March 1, 1999, CTI and its subsidiaries had
unused borrowing availability under the CTI credit facility of approximately
(Pounds)24.0 million ($39.9 million).     
   
    The loan commitment under the CTI credit facility will be automatically
reduced to zero in three equal semi-annual installments commencing on May 31,
2001 and ending on May 31, 2002, when the CTI credit facility matures. In
addition, the CTI Credit Facility provides for mandatory cancellation of all or
part of the loan commitment and mandatory prepayment (1) with an amount equal
to the net proceeds of certain asset sales and (2) upon the consummation of an
initial public offering or the listing on any stock exchange of the shares of
CTI, CTSH or CCIC.     
   
    CTI's and CTSH's obligations under the CTI credit facility are secured by
fixed and floating charges over all of their respective assets. The loans under
the CTI credit facility will bear interest at a "LIBOR rate" plus 0.85% and a
spread related to the lenders' cost of making the CTI credit facility available
to CTI.     
   
    The CTI credit facility contains a number of covenants that, among other
things, restrict the ability of CTI to dispose of assets, incur additional
indebtedness, incur guaranty obligations, repay subordinated indebtedness
except in accordance with the subordination provisions, pay dividends or make
capital distributions, create liens on assets, make investments, make
acquisitions, engage in certain transactions with subsidiaries and affiliates
and otherwise restrict corporate activities. In     
 
                                      136
<PAGE>
 
   
addition, the CTI credit facility will require compliance with certain
financial covenants, including requiring CTI to maintain a maximum ratio of
indebtedness to EBITDA, a minimum ratio of EBITDA to interest expense, and a
minimum tangible net worth. CCIC does not expect that such covenants will
materially impact the ability of CTI to operate its business.     
   
    The CTI credit facility contains customary events of default, including the
failure to pay principal or any interest or any other amount that becomes due
within three business days after the due date thereof, any representation or
warranty being made by CTI that is untrue or misleading on the date made, a
default in the performance of any of its covenants under the CTI credit
facility (unless, if such default is capable of remedy, such default is cured
within 14 days of CTI becoming aware of such default), default in certain other
indebtedness, certain insolvency events and certain change of control events.
       
    On July 17, 1998, the lenders (acting through Credit Suisse First Boston,
as agent) under the CTI credit facility waived a provision in the CTI credit
facility that would have required the repayment of the CTI credit facility
concurrently with the listing of our common stock.     
   
The 10 5/8% Discount Notes     
   
    On November 20, 1997, we privately placed $251.0 million principal amount
at maturity ($150,010,150 initial accreted value) of our 10 5/8% Senior
Discount Notes due 2007. The following is a summary of certain terms of the 10
5/8% discount notes and is qualified in its entirety by reference to the
indenture governing the 10 5/8% discount notes relating to the 10 5/8% Notes.
       
    The 10 5/8% discount notes are our unsecured senior obligations, and will
rank pari passu in right of payment with all our existing and future senior
indebtedness and will be senior to our future subordinated indebtedness. The 10
5/8% discount notes mature on November 15, 2007. The 10 5/8% discount notes
will accrete in value until November 15, 2002. Thereafter, cash interest will
accrue on the 10 5/8% discount notes at the rate of 10.625% per annum and will
be payable semi-annually, commencing on May 15, 2003.     
   
    Except as stated below, the 10 5/8% discount notes are not redeemable prior
to November 15, 2002. Thereafter, the 10 5/8% discount notes are redeemable at
our option, in whole or in part, at any time or from time to time, at a premium
which is at a fixed percentage that declines to par on or after November 15,
2005, in each case together with accrued and unpaid interest, if any, to the
date of redemption. In the event we consummate a public equity offering or
certain strategic equity investments prior to November 15, 2000, we may, at its
option, use all or a portion of the proceeds from such offering to redeem up to
35% of the original aggregate principal amount at maturity of the 10 5/8%
discount notes at a redemption price equal to 110.625% of the accreted value of
the 10 5/8% discount notes to be redeemed, plus accrued and unpaid interest, if
any, thereon to the redemption date, provided at least 65% of the original
aggregate principal amount at maturity of the 10 5/8% discount notes remains
outstanding after each such redemption.     
   
    Upon the occurrence of a change of control (as defined in the 10 5/8% Notes
Indenture), each holder of 10 5/8% discount notes has the right to require us
to purchase all or a portion of such holder's 10 5/8% discount notes at a price
equal to 101% of the aggregate principal amount thereof, together with accrued
and unpaid interest to the date of purchase.     
   
    The 10 5/8% Notes Indenture contains certain covenants, including covenants
that limit:     
     
  (1) indebtedness,     
     
  (2) restricted payments,     
     
  (3) distributions from restricted subsidiaries,     
     
  (4) transactions with affiliates,     
 
                                      137
<PAGE>
 
     
  (5) sales of assets and subsidiary stock (including sale and leaseback
      transactions),     
     
  (6) dividend and other payment restrictions affecting restricted
      subsidiaries, and     
     
  (7) mergers or consolidations.     
 
The CTI Bonds
   
    On May 21, 1997, a subsidiary of CTSH, CTI, issued (Pounds)125.0 million
aggregate principal amount of its 9% Guaranteed Bonds due 2007. The CTI bonds
are listed on the Luxembourg Stock Exchange. The following is a summary of
certain terms of the bonds and is qualified in its entirety by reference to the
trust deed dated May 21, 1997 relating to the CTI bonds.     
   
    The CTI bonds constitute direct, general and unconditional guaranteed
obligations of the subsidiary of CTSH and rank pari passu with all other
present and future unsecured and unsubordinated obligations of such subsidiary.
The CTI bonds are guaranteed jointly and severally by CTI and CTSH. The CTI
bonds will mature on March 30, 2007. Interest on the CTI bonds is payable
annually in arrears on March 30 in each year, the first payment having been
made on March 30, 1998.     
   
    The CTI bonds may be redeemed at our option in whole or in part, at any
time or from time to time, at the greater of their principal and such price as
will provide a gross redemption yield 0.5% per annum above the gross redemption
yield of the benchmark gilt plus, in either case, accrued and unpaid interest.
       
    Upon the occurrence of a put event (as defined in the trust deed), each
holder of CTI bonds has the right to require such subsidiary to purchase all or
a portion of such holder's CTI bonds at a price equal to 101% of the aggregate
principal amount thereof, together with accrued and unpaid interest to the date
of purchase.     
   
    The trust deed contains certain covenants, including covenants that limit:
       
  (1) indebtedness,     
     
  (2) restricted payments,     
     
  (3) distributions from restricted subsidiaries,     
     
  (4) transactions with affiliates,     
     
  (5) sales of assets and subsidiary stock,     
     
  (6) dividend and other payment restrictions affecting restricted
      subsidiaries, and     
     
  (7) mergers or consolidations.     
   
Joint Venture Credit Facility     
   
    Pursuant to the loan agreement dated as of March 31, 1999, Crown Atlantic
Holding Sub L.L.C. entered into the joint venture credit facility with Key
Corporate Capital, Inc. The following summary of certain provisions of the
joint venture credit facility does not purport to be complete and is subject
to, and is qualified in its entirety by reference to the joint venture credit
facility.     
   
    The joint venture credit facility provides for revolving credit loans in an
aggregate principal amount not to exceed $250.0 million, $180.0 million of
which was drawn in connection with the formation of the joint venture, and the
balance of which will be used for acquisition and construction of tower
facilities, capital expenditures, working capital needs and general corporate
purposes. The borrowing base until September 30, 2001, is based on a multiple
of test operating cash flow. On     
 
                                      138
<PAGE>
 
   
September 30, 2001, the conversion date, the borrowing base test will be
eliminated and the amount of the facility will be decreased to the borrowing
base as of that date. The joint venture credit facility includes a $25.0
million sublimit available for the issuance of letters of credit.     
   
    The amount of the facility after the conversion date will be reduced on a
quarterly basis until March 31, 2006, when the joint venture credit facility
matures. The annual percentage reduction in this loan commitment is 3.0% in
2001 (two quarters), 7.5% in 2002, 22.5% in 2003, 26.0% in 2004, 32.0% in 2005
and 9.0% in 2006 (one quarter). In addition, the joint venture credit facility
provides for mandatory reduction of the loan commitment and mandatory
prepayment with the     
 
  (1) net proceeds of certain asset sales,
 
  (2) 50% of capital contributions to Holdco subject to certain significant
      exceptions including capital expenditures pursuant to the Build-to-Suit
      Agreement,
 
  (3) net proceeds of any unused insurance proceeds and
     
  (4) a percentage of the excess cash flow of the joint venture, commencing
      with the calendar year ending December 31, 2001.     
   
    The joint venture's obligations under the joint venture credit facility are
secured by     
     
  (1) a pledge of the membership interest in the joint venture and     
     
  (2) a perfected first priority security interest in the joint venture's
      interest in tenant leases including the global lease. The joint venture
      credit facility contractually permits the joint venture to pay
      maintenance, operating, ground lease and other expenses and costs
      relating to the tower facilities out of the tower rentals whether or
      not an event of default has occurred.     
   
    The loans under the joint venture credit facility will bear interest, at
the joint venture's option, at either (A) a "base rate" equal to KeyCorp's
prime lending rate plus an applicable spread ranging from 0% to 1.25%
(determined based on a leverage ratio) or (B) a "LIBOR rate" plus an applicable
spread ranging from 1.0% to 2.875% (determined based on a leverage ratio). The
joint venture must hedge approximately 50% of its variable interest rate
obligations for a period of two years. Following the occurrence of and during
the continuance of an event of default under the joint venture credit facility,
the loans will bear interest at the "base rate" plus 4.875%.     
   
    The joint venture credit facility will contain a number of covenants that,
among other things, restrict the ability of the joint venture to:     
     
  .  dispose of assets,     
     
  .  incur additional indebtedness,     
     
  .  incur guaranty obligations,     
     
  .  repay subordinated indebtedness except in accordance with the
     subordination provisions,     
     
  .  pay dividends or make capital distributions,     
     
  .  create liens on assets,     
     
  .  enter into leases,     
     
  .  make investments,     
     
  .  make acquisitions,     
     
  .  engage in mergers or consolidations,     
     
  .  make capital expenditures,     
     
  .  engage in certain transactions with subsidiaries and affiliates and
     otherwise restrict company activities.     
 
                                      139
<PAGE>
 
   
    In addition, the joint venture credit facility will require compliance with
certain financial covenants, including requiring the joint venture to maintain:
       
  .  a minimum ratio of operating cash flow to indebtedness,     
     
  .  a minimum ratio of operating cash flow to fixed charges,     
     
  .  a minimum ratio of operating cash flow to projected debt service and
            
  .  a minimum ratio of operating cash flow to interest expense.     
   
    The joint venture does not expect that such covenants will materially
impact its ability to operate its business.     
   
    The joint venture credit facility contains customary events of default,
including the failure to pay principal when due or any interest or other amount
that becomes due within two days after the due date thereof, any representation
or warranty being made by the joint venture that is incorrect in any material
respect on or as of the date made, a default in the performance of any negative
covenants or a default in the performance of certain other covenants or
agreements (including the formation agreement) for a period of days, default in
certain other indebtedness, certain insolvency events and certain change of
control events. During the first two years of the joint venture credit
facility, capital contributions can cure an operating cash flow default and
certain other covenant and agreement defaults.     
 
CCIC Term Loan Facility
   
    Pursuant to a term loan agreement dated as of March 15, 1999, we entered a
term loan credit facility with a group of banks and other financial
institutions led by Goldman Sachs Credit Partners L.P., Salomon Brothers
Holding Company Inc. and Credit Suisse First Boston. As of April 5, 1999, we
had borrowed $100.0 million under the term loan facility to fund or refinance
its escrow payments made in connection with the proposed Powertel acquisition
and the proposed BellSouth transaction. The following summary of the term loan
facility does not purport to be complete and is subject to, and is qualified in
its entirety by reference to, the provisions of the term loan facility.     
   
    The term loan facility provides for term loans in an aggregate principal
amount not to exceed $100.0 million. The loans under the term loan facility
mature on November 30, 2007 and bear interest at an increasing rate based on
LIBOR as set forth in the term loan agreement, but in no event shall the
interest on such loans exceed 16%. At any time we may, at our option, prepay
the term loans without penalty or premium. Subject to limited exceptions, the
term loan facility requires us to prepay the loans without penalty or premium
with the proceeds of:     
 
  (1) any offering of debt or equity securities,
     
  (2) the incurrence of other debt (other than debt under the senior credit
      facility),     
     
  (3) asset sales for cash consideration, or with a fair market value, in
      excess of $1.0 million, and     
     
  (4) any recovery of amounts deposited in escrow in connection with the
      proposed Powertel acquisition and the proposed BellSouth transaction.
             
    The term loan agreement contains covenants substantially identical to the
covenants contained in our 10 5/8% discount notes. At any time on or after
March 16, 2000, the lenders under the term loan agreement may exchange their
term loans for an equal aggregate principal amount of our Senior Exchange Notes
due 2007. These exchange notes will be issued pursuant to an indenture dated as
of March 15, 1999, between us and United States Trust Company of New York, as
trustee. These exchange notes will have the same maturity as the term loans and
will bear interest at the rate in effect with respect to the term loans on the
date of exchange. The covenants contained in the exchange note indenture will
be substantially identical to the covenants contained in the certificate of
designations governing our exchangeable preferred stock, with additional
covenants restricting the incurrence of liens and sale-leaseback transactions.
    
                                      140
<PAGE>
 
                          [D] DESCRIPTION OF THE NOTES
 
General
 
    You can find the definitions of certain terms used in the following summary
under the subheading "Certain Definitions." In this summary, the word "Company"
refers only to Crown Castle International Corp. and not to any of its
Subsidiaries.
 
    The Company will issue the notes under an Indenture (the "Indenture")
between itself and United States Trust Company of New York, as trustee. The
terms of the notes include those stated in the Indenture and those made part of
the Indenture by reference to the Trust Indenture Act of 1939, as amended (the
"Trust Indenture Act").
 
    The following description is a summary of the material provisions of the
Indenture. It does not restate the Indenture in its entirety. We urge you to
read the Indenture, because it, and not this description, define your rights as
holders of the notes. A copy of the proposed form of Indenture has been filed
as an exhibit to the registration statement which includes this prospectus and
is available as set forth below under "--Additional Information."
 
    These notes:
 
    (1) are general obligations of the Company;
 
    (2) are unsecured;
 
    (3) are pari passu in right of payment with all future unsecured senior
  Indebtedness of the Company.
 
    The operations of the Company are conducted through its Subsidiaries and,
therefore, the Company depends on the cash flow of its Subsidiaries to meet its
obligations, including its obligations under the notes. The Company's
Subsidiaries will not be guarantors of the notes and the notes will be
effectively subordinated to all Indebtedness (including all borrowings under
the Senior Credit Facility, the CTI Credit Facility and the CTI Bonds) and
other liabilities and commitments (including trade payables and lease
obligations) of the Company's Subsidiaries. Any right of the Company to receive
assets of any of its Subsidiaries upon the latter's liquidation or
reorganization (and the consequent right of the holders of the notes to
participate in those assets) will be effectively subordinated to the claims of
that Subsidiary's creditors, except to the extent that the Company is itself
recognized as a creditor of such Subsidiary, in which case the claims of the
Company would still be subordinate in right of payment to any security in the
assets of such Subsidiary and any indebtedness of such Subsidiary senior to
that held by the Company. As of December 31, 1998, after giving pro forma
effect to the Proposed Transactions, the Company's Subsidiaries would have had
$441.6 million of Indebtedness outstanding, and would have had $77.6 million
and $51.2 million of unused borrowing availability, respectively, under the
Senior Credit Facility and the CTI Credit Facility. The provisions of the
Senior Credit Facility, the CTI Credit Facility and the CTI Bonds contain
substantial restrictions on the ability of such Subsidiaries to dividend or
distribute cash flow or assets to the Company. See "Risk Factors--Holding
Company Structure; Restrictions on Access to Cash Flow of Subsidiaries" and
"Description of the Senior Credit Facility."
 
    As of the date of the Indenture, all of the Company's Subsidiaries other
than (1) CTSH and its subsidiaries and (2) Crown Castle Investment Corp. and
Crown Castle Investment Corp. II and their subsidiaries, through which the
Company intends to hold its interest in the Proposed BAM JV, will be Restricted
Subsidiaries. However, under certain circumstances, the Company will be able to
designate current or future Subsidiaries as Unrestricted Subsidiaries.
Unrestricted Subsidiaries will not be subject to many of the restrictive
covenants set forth in the Indenture.
 
 
                                      141
<PAGE>
 
Principal, Maturity and Interest
 
    The notes will be limited in aggregate principal amount at maturity to $
million and will mature on            , 2011. The notes are being offered at a
substantial discount from their
principal amount at maturity. See "Certain United States Federal Income Tax
Considerations--U.S. Holders--Interest and Original Issue Discount." Until
           , 2004, no interest will accrue, but the Accreted Value will accrete
(representing the amortization of original issue discount) between the date of
original issuance and            , 2004, on a semiannual bond equivalent basis
using a 360-day year comprised of twelve 30-day months such that the Accreted
Value shall be equal to the full principal amount of the notes on            ,
2004 (the "Full Accretion Date"). The initial Accreted Value per $1,000 in
principal amount of notes will be $300.0 million (representing the original
price at which notes are being offered in the debt offering). Beginning on
           , 2004, interest on the notes will accrue at the rate of    % per
annum and will be payable in U.S. dollars semiannually in arrears on
            and            , commencing on            , 2004, to holders of
record on the immediately preceding             and            . Holders of
record on such record dates will become irrevocably entitled to receive accrued
interest, in respect of the interest period during which such record date
occurs as of the close of business on such record date. Interest on the notes
will accrue from the most recent date to which interest has been paid or, if no
interest has been paid, from the Full Accretion Date. Interest will be computed
on the basis of a 360-day year comprised of twelve 30-day months. Principal,
premium, if any, and interest on the notes will be payable at the office or
agency of the Company maintained for such purpose within the City and State of
New York or, at the option of the Company, payment of interest may be made by
check mailed to the holders of the notes at their respective addresses set
forth in the register of holders of notes; provided that all payments of
principal, premium and interest with respect to notes the holders of which have
given wire transfer instructions to the Company will be required to be made by
wire transfer of immediately available funds to the accounts in the United
States specified by those holders. Until otherwise designated by the Company,
the Company's office or agency in New York will be the office of the trustee
maintained for such purpose. The notes will be issued in denominations of
$1,000 and integral multiples thereof.
 
Optional Redemption
 
    Except as described below, the notes will not be redeemable at the
Company's option prior to            , 2004. Thereafter, the notes will be
subject to redemption at any time at the option of the Company, in whole or in
part, upon not less than 30 nor more than 60 days' notice, at the redemption
prices (expressed as percentages of principal amount) set forth below plus
accrued and unpaid interest thereon, if any, to the applicable redemption date
(subject to the right of holders of record on the relevant record date to
receive interest due on the relevant interest payment date), if redeemed during
the twelve-month period beginning on             of the years indicated below:
 
<TABLE>
         <S>                                          <C>
         Year                                         Percentage
         ----                                         ----------
<CAPTION>
         2004........................................           %
         <S>                                          <C>
         2005........................................           %
         2006........................................           %
         2007 and thereafter.........................    100.000%
</TABLE>
 
    During the first 36 months after the date of original issuance of the
notes, the Company may on any one or more occasions redeem up to 35% of the
aggregate principal amount at maturity of notes originally issued at a
redemption price of    % of the Accreted Value thereof on the redemption date
with the net cash proceeds of one or more Public Equity Offerings and/or
Strategic Equity Investments; provided that at least 65% of the aggregate
principal amount at maturity of notes originally issued remains outstanding
immediately after the occurrence of such redemption (excluding
 
                                      142
<PAGE>
 
notes held by the Company or any of its Subsidiaries); and provided, further,
that such redemption shall occur within 60 days of the date of the closing of
such Public Equity Offering and/or Strategic Equity Investment.
 
Selection and Notice
 
    If less than all of the notes are to be redeemed at any time, selection of
notes for redemption will be made by the trustee in compliance with the
requirements of the principal national securities exchange, if any, on which
the notes are listed, or, if the notes are not so listed, on a pro rata basis,
by lot or by such method as the trustee shall deem fair and appropriate;
provided that no notes of $1,000 or less shall be redeemed in part. Notices of
redemption shall be mailed by first class mail at least 30 but not more than 60
days before the redemption date to each holder of notes to be redeemed at its
registered address. Notices of redemption may not be conditional. If any note
is to be redeemed in part only, the notice of redemption that relates to such
note shall state the portion of the principal amount thereof to be redeemed. A
new note in principal amount equal to the unredeemed portion thereof will be
issued in the name of the holder thereof upon cancellation of the original
note. notes called for redemption become due on the date fixed for redemption.
On and after the redemption date, interest ceases to accrue on notes or
portions of them called for redemption.
 
Mandatory Redemption
 
    The Company is not required to make mandatory redemption or sinking fund
payments with respect to the notes.
 
Repurchase at the Option of Holders
 
Change of Control
 
    If a Change of Control occurs, each holder of notes will have the right to
require the Company to repurchase all or any part (equal to $1,000 or an
integral multiple thereof) of such holder's notes pursuant to the offer
described below (the "Change of Control Offer") at an offer price in cash equal
to 101% of the aggregate principal amount thereof plus accrued and unpaid
interest thereon, if any (subject to the right of holders of record on the
relevant record date to receive interest due on the relevant interest payment
date), to the date of purchase or, in the case of repurchases of notes prior to
the Full Accretion Date, at a purchase price equal to 101% of the Accreted
Value thereof on the date of repurchase, to such date of repurchase (the
"Change of Control Payment"). Within 30 days following any Change of Control,
the Company will mail a notice to each holder describing the transaction or
transactions that constitute the Change of Control and offering to repurchase
notes on the date specified in such notice, which date shall be no earlier than
30 days and no later than 60 days from the date such notice is mailed (the
"Change of Control Payment Date"), pursuant to the procedures required by the
Indenture and described in such notice.
 
    On the Change of Control Payment Date, the Company will, to the extent
lawful:
 
    (1) accept for payment all notes or portions thereof properly tendered
  pursuant to the Change of Control Offer;
 
    (2) deposit with the paying agent an amount equal to the Change of
  Control Payment in respect of all notes or portions thereof so tendered;
  and
 
    (3) deliver or cause to be delivered to the trustee the notes so accepted
  together with an Officers' Certificate stating the aggregate principal
  amount of notes or portions thereof being purchased by the Company.
 
                                      143
<PAGE>
 
The paying agent will promptly mail to each holder of notes so tendered the
Change of Control Payment for such notes, and the trustee will promptly
authenticate and mail (or cause to be transferred by book entry) to each holder
a new note equal in principal amount to any unpurchased portion of the notes
surrendered, if any; provided that each such new note will be in a principal
amount of $1,000 or an integral multiple thereof.
 
    The Change of Control provisions described above will be applicable whether
or not any other provisions of the Indenture are applicable. The Company will
comply, to the extent applicable, with the requirements of Section 14(e) of the
Exchange Act and any other securities laws or regulations applicable to any
Change of Control Offer. To the extent that the provisions of any such
securities laws or securities regulations conflict with the provisions of the
covenant described above, the Company will comply with the applicable
securities laws and regulations and will not be deemed to have breached its
obligations under the covenant described above by virtue thereof.
 
    The Change of Control purchase feature is a result of negotiations between
the Company and the Initial Purchasers. Management has no present intention to
engage in a transaction involving a Change of Control, although it is possible
that the Company would decide to do so in the future. Subject to the
limitations discussed below, the Company could, in the future, enter into
certain transactions, including acquisitions, refinancings or other
recapitalizations, that would not constitute a Change of Control under the
Indenture, but that could increase the amount of Indebtedness outstanding at
such time or otherwise affect the Company's capital structure. Restrictions on
the ability of the Company to incur additional Indebtedness are contained in
the covenants described under "--Certain Covenants--Incurrence of Indebtedness
and Issuance of Preferred Stock," "--Certain Covenants--Liens" and "--Certain
Covenants--Sale and Leaseback Transactions." Such restrictions can only be
waived with the consent of the holders of a majority in principal amount of the
notes then outstanding. Except for the limitations contained in such covenants,
however, the Indenture will not contain any covenants or provisions that may
afford holders of the notes protection in the event of certain highly leveraged
transactions.
 
    The Senior Credit Facility limits the Company's access to the cash flow of
its Subsidiaries and will, therefore, restrict the Company's ability to
purchase any notes. The Senior Credit Facility also provides that the
occurrence of certain change of control events with respect to the Company
constitute a default thereunder. In the event that a Change of Control occurs
at a time when the Company's Subsidiaries are prohibited from making
distributions to the Company to purchase notes, the Company could cause its
Subsidiaries to seek the consent of the lenders under the Senior Credit
Facility to allow such distributions or could attempt to refinance the
borrowings that contain such prohibition. If the Company does not obtain such a
consent or repay such borrowings, the Company will remain prohibited from
purchasing notes. In such case, the Company's failure to purchase tendered
notes would constitute an Event of Default under the Indenture which would, in
turn, constitute a default under the Senior Credit Facility. Future
indebtedness of the Company and its Subsidiaries may contain prohibitions on
the occurrence of certain events that would constitute a Change of Control or
require such indebtedness to be repurchased upon a Change of Control. Moreover,
the exercise by the holders of their right to require the Company to repurchase
the notes could cause a default under such indebtedness, even if the Change of
Control itself does not, due to the financial effect of such repurchase on the
Company. Finally, the Company's ability to pay cash to the holders of notes
following the occurrence of a Change of Control may be limited by the Company's
then existing financial resources, including its ability to access the cash
flow of its Subsidiaries. See "Risk Factors--Repurchase of the notes Upon a
Change of Control" and "Risk Factors--Holding Company Structure; Restrictions
on Access to Cash Flow of Subsidiaries." There can be no assurance that
sufficient funds will be available when necessary to make any required
repurchases.
 
                                      144
<PAGE>
 
    The Company will not be required to make a Change of Control Offer upon a
Change of Control if a third party makes the Change of Control Offer in the
manner, at the times and otherwise in compliance with the requirements set
forth in the Indenture applicable to a Change of Control Offer made by the
Company and purchases all notes validly tendered and not withdrawn under such
Change of Control Offer. The provisions under the Indenture relative to the
Company's obligation to make an offer to repurchase the notes as a result of a
Change of Control may be waived or modified with the written consent of the
holders of a majority in principal amount of the notes then outstanding.
 
    The definition of Change of Control includes a phrase relating to the sale,
lease, transfer, conveyance or other disposition of "all or substantially all"
of the assets of the Company and its Restricted Subsidiaries taken as a whole.
Although there is a developing body of case law interpreting the phrase
"substantially all," there is no precise established definition of the phrase
under applicable law. Accordingly, the ability of a holder of notes to require
the Company to repurchase such notes as a result of a sale, lease, transfer,
conveyance or other disposition of less than all of the assets of the Company
and its Subsidiaries taken as a whole to another Person or group may be
uncertain.
 
Asset Sales
 
    The Company will not, and will not permit any of its Restricted
Subsidiaries to, consummate an Asset Sale unless:
 
    (1) the Company (or the Restricted Subsidiary, as the case may be)
  receives consideration at the time of such Asset Sale at least equal to the
  fair market value (evidenced by a resolution of the Board of Directors set
  forth in an Officers' Certificate delivered to the trustee) of the assets
  or Equity Interests issued or sold or otherwise disposed of; and
 
    (2) except in the case of a Tower Asset Exchange, at least 75% of the
  consideration therefor received by the Company or such Restricted
  Subsidiary is in the form of cash or Cash Equivalents; provided that the
  amount of:
 
      (a) any liabilities (as shown on the Company's or such Restricted
    Subsidiary's most recent balance sheet), of the Company or any
    Restricted Subsidiary (other than contingent liabilities and
    liabilities that are by their terms subordinated to the notes or any
    guarantee thereof) that are assumed by the transferee of any such
    assets pursuant to a customary novation agreement that releases the
    Company or such Restricted Subsidiary from further liability; and
 
      (b) any securities, notes or other obligations received by the
    Company or any such Restricted Subsidiary from such transferee that are
    converted by the Company or such Restricted Subsidiary into cash within
    20 days of the applicable Asset Sale (to the extent of the cash
    received), shall be deemed to be cash for purposes of this provision.
 
  Within 360 days after the receipt of any Net Proceeds from an Asset Sale, the
Company or the applicable Restricted Subsidiary may apply such Net Proceeds to:
 
    (1) reduce Indebtedness under a Credit Facility;
 
    (2) reduce other Indebtedness of any of the Company's Restricted
  Subsidiaries;
 
    (3) the acquisition of all or substantially all the assets of a Permitted
  Business;
 
    (4) the acquisition of Voting Stock of a Permitted Business from a Person
  that is not a Subsidiary of the Company; provided, that, after giving
  effect thereto, the Company or its Restricted Subsidiary owns a majority of
  such Voting Stock; or
 
                                      145
<PAGE>
 
    (5) the making of a capital expenditure or the acquisition of other long-
  term assets that are used or useful in a Permitted Business.
 
  Pending the final application of any such Net Proceeds, the Company may
temporarily reduce revolving credit borrowings or otherwise invest such Net
Proceeds in any manner that is not prohibited by the Indenture. Any Net
Proceeds from Asset Sales that are not applied or invested as provided in the
first sentence of this paragraph will be deemed to constitute "Excess
Proceeds." When the aggregate amount of Excess Proceeds exceeds $5.0 million,
the Company will be required to make an offer to all holders of notes and all
holders of other senior Indebtedness of the Company containing provisions
similar to those set forth in the Indenture with respect to offers to purchase
or redeem with the proceeds of sales of assets (an "Asset Sale Offer") to
purchase the maximum principal amount (or accreted value, as applicable) of
notes and such other senior Indebtedness of the Company that may be purchased
out of the Excess Proceeds. The offer price for the notes will be payable in
cash and will be 100% of the principal amount of any notes purchased after the
Full Accretion Date, plus accrued interest to the date of purchase, and 100% of
the Accreted Value of any notes purchased prior to the Full Accretion Date. In
the case of any such other senior Indebtedness, the offer price will be 100% of
the principal amount (or accreted value, as applicable) thereof plus accrued
and unpaid interest thereon, if any, to the date of purchase. Each Asset Sale
Offer will be made in accordance with the procedures set forth in the Indenture
and such other senior Indebtedness of the Company. To the extent that any
Excess Proceeds remain after consummation of an Asset Sale Offer, the Company
may use such Excess Proceeds for any purpose not otherwise prohibited by the
Indenture. If the aggregate principal amount of notes and such other senior
Indebtedness of the Company tendered into such Asset Sale Offer surrendered by
holders thereof exceeds the amount of Excess Proceeds, the trustee shall select
the notes and such other senior Indebtedness to be purchased on a pro rata
basis. Upon completion of such offer to purchase, the amount of Excess Proceeds
shall be reset at zero.
 
Certain Covenants
 
Restricted Payments
 
  The Company will not, and will not permit any of its Restricted Subsidiaries
to, directly or indirectly:
 
    (1) declare or pay any dividend or make any other payment or distribution
  on account of the Company's or any of its Restricted Subsidiaries' Equity
  Interests (including, without limitation, any payment in connection with
  any merger or consolidation involving the Company or any of its Restricted
  Subsidiaries) or to the direct or indirect holders of the Company's or any
  of its
  Restricted Subsidiaries' Equity Interests in their capacity as such (other
  than dividends or distributions payable in Equity Interests (other than
  Disqualified Stock) of the Company or to the Company or a Restricted
  Subsidiary of the Company);
 
    (2) purchase, redeem or otherwise acquire or retire for value (including
  without limitation, in connection with any merger or consolidation
  involving the Company) any Equity Interests of the Company or any direct or
  indirect parent of the Company (other than any such Equity Interests owned
  by the Company or any Restricted Subsidiary of the Company);
 
    (3) make any payment on or with respect to, or purchase, redeem, defease
  or otherwise acquire or retire for value any Indebtedness that is
  subordinated to the notes, except a payment of interest or principal at
  Stated Maturity; or
 
    (4) make any Restricted Investment, (all such payments and other actions
  set forth in clauses (1) through (4) above being collectively referred to
  as "Restricted Payments"),
 
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<PAGE>
 
unless, at the time of and after giving effect to such Restricted Payment:
 
    (1) no Default shall have occurred and be continuing or would occur as a
  consequence thereof; and
 
    (2) the Company would have been permitted to incur at least $1.00 of
  additional Indebtedness pursuant to the Debt to Adjusted Consolidated Cash
  Flow Ratio test set forth in the first paragraph of the covenant described
  below under the caption "--Incurrence of Indebtedness and Issuance of
  Preferred Stock"; provided that the Company and its Restricted Subsidiaries
  will not be required to comply with this clause (2) in order to make any
  Restricted Investment; and
 
    (3) such Restricted Payment, together with the aggregate amount of all
  other Restricted Payments made by the Company and its Restricted
  Subsidiaries after the date of the Indenture (excluding Restricted Payments
  permitted by clauses (2), (3) and (4) of the next succeeding paragraph), is
  less than the sum, without duplication, of:
 
      (a) 50% of the Consolidated Net Income of the Company for the period
    (taken as one accounting period) from the beginning of the first fiscal
    quarter commencing after the date of the Indenture to the end of the
    Company's most recently ended fiscal quarter for which internal
    financial statements are available at the time of such Restricted
    Payment (or, if such Consolidated Net Income for such period is a
    deficit, less 100% of such deficit); plus
 
      (b) 100% of the aggregate net cash proceeds received by the Company
    since the IPO Date as a contribution to its common equity capital or
    from the issue or sale of Equity Interests of the Company (other than
    Disqualified Stock and except to the extent such net cash proceeds are
    used to incur new Indebtedness outstanding pursuant to clause (11) of
    the second paragraph of the covenant described below under the caption
    "Incurrence of Indebtedness and Issuance of Preferred Stock") or from
    the issue or sale of Disqualified Stock or debt securities of the
    Company that have been converted into such Equity Interests (other than
    Equity Interests (or Disqualified Stock or convertible debt securities)
    sold to a Subsidiary of the Company and other than Disqualified Stock
    or convertible debt securities that have been converted into
    Disqualified Stock); plus
 
      (c) to the extent that any Restricted Investment that was made after
    the date of the Indenture is sold for cash or otherwise liquidated or
    repaid for cash, the lesser of (A) the cash return of capital with
    respect to such Restricted Investment (less the cost of disposition, if
    any) and (B) the initial amount of such Restricted Investment; plus
 
      (d) to the extent that any Unrestricted Subsidiary of the Company and
    all of its Subsidiaries are designated as Restricted Subsidiaries after
    the date of the Indenture, the
    lesser of (A) the fair market value of the Company's Investments in
    such Subsidiaries as of the date of such designation, or (B) the sum of
    (x) the fair market value of the Company's Investments in such
    Subsidiaries as of the date on which such Subsidiaries were originally
    designated as Unrestricted Subsidiaries and (y) the amount of any
    Investments made in such Subsidiaries subsequent to such designation
    (and treated as Restricted Payments) by the Company or any Restricted
    Subsidiary; provided that:
 
        (i) in the event the Unrestricted Subsidiaries designated as
      Restricted Subsidiaries are CTSH and its Subsidiaries, the
      references in clauses (A) and (B) of this clause (d) to fair market
      value of the Company's Investments in such Subsidiaries shall mean
      the amount by which the fair market value of all such Investments
      exceeds 34.3% of the fair market value of CTSH and its Subsidiaries
      as a whole; and
 
        (ii) in the event the Unrestricted Subsidiaries designated as
      Restricted Subsidiaries are CCAIC and its Subsidiaries, the
      references in clauses (A) and (B) of this clause (d)
 
                                      147
<PAGE>
 
      to fair market value of the Company's Investments in such
      Subsidiaries shall mean the amount by which the fair market value of
      all such Investments exceeds $250.0 million; plus
 
      (e) 50% of any dividends received by the Company or a Restricted
    Subsidiary after the date of the Indenture from an Unrestricted
    Subsidiary of the Company, to the extent that such dividends were not
    otherwise included in Consolidated Net Income of the Company for such
    period.
 
  The foregoing provisions will not prohibit:
 
    (1) the payment of any dividend within 60 days after the date of
  declaration thereof, if at said date of declaration such payment would have
  complied with the provisions of the Indenture;
 
    (2) the making of any Investment or the redemption, repurchase,
  retirement, defeasance or other acquisition of any subordinated
  Indebtedness or Equity Interests of the Company in exchange for, or out of
  the net cash proceeds from the sale since the IPO Date (other than to a
  Subsidiary of the Company) of, any Equity Interests of the Company (other
  than any Disqualified Stock); provided that such net cash proceeds are not
  used to incur new Indebtedness pursuant to clause (11) of the second
  paragraph of the covenant described below under the caption "-- Incurrence
  of Indebtedness and Issuance of Preferred Stock"); and provided further
  that, in each such case, the amount of any such net cash proceeds that are
  so utilized shall be excluded from clause (3)(b) of the preceding
  paragraph;
 
    (3) the defeasance, redemption, repurchase or other acquisition of
  subordinated Indebtedness with the net cash proceeds form an incurrence of
  Permitted Refinancing Indebtedness;
 
    (4) the payment of any dividend by a Restricted Subsidiary of the Company
  to the holders of its Equity Interests on a pro rata basis; or
 
    (5) the repurchase, redemption or other acquisition or retirement for
  value of any Equity Interests of the Company or any Restricted Subsidiary
  of the Company held by any member of the Company's (or any of its
  Restricted Subsidiaries') management pursuant to any management equity
  subscription agreement or stock option agreement in effect as of the date
  of the Indenture; provided that the aggregate price paid for all such
  repurchased, redeemed, acquired or retired Equity Interests shall not
  exceed (a) $500,000 in any twelve-month period and (b) $5.0 million in the
  aggregate.
 
  The Board of Directors may designate any Restricted Subsidiary to be an
Unrestricted Subsidiary if such designation would not cause a Default. For
purposes of making such determination, all outstanding Investments by the
Company and its Restricted Subsidiaries (except to the extent repaid in cash)
in the Subsidiary so designated will be deemed to be Restricted Payments
at the time of such designation and will reduce the amount available for
Restricted Payments under the first paragraph of this covenant. All such
outstanding Investments will be deemed to constitute Investments in an amount
equal to the fair market value of such Investments at the time of such
designation. Such designation will only be permitted if such Restricted Payment
would be permitted at such time and if such Restricted Subsidiary otherwise
meets the definition of an Unrestricted Subsidiary. The Board of Directors may
designate any Unrestricted Subsidiary to be a Restricted Subsidiary if such
designation would not cause a Default.
 
  The amount of all Restricted Payments (other than cash) shall be the fair
market value on the date of the Restricted Payment of the asset(s) or
securities proposed to be transferred or issued by the Company or the
applicable Restricted Subsidiary, as the case may be, pursuant to the
Restricted Payment. The fair market value of any property, assets or
Investments required by this covenant to
 
                                      148
<PAGE>
 
be determined shall be determined by the Board of Directors whose resolution
with respect thereto shall be delivered to the trustee.
 
Incurrence of Indebtedness and Issuance of Preferred Stock
 
  The Company will not, and will not permit any of its Restricted Subsidiaries
to, directly or indirectly, create, incur, issue, assume, guarantee or
otherwise become directly or indirectly liable, contingently or otherwise, with
respect to (collectively, "incur") any Indebtedness (including Acquired Debt)
and that the Company will not issue any Disqualified Stock and will not permit
any of its Restricted Subsidiaries to issue any shares of preferred stock;
provided that the Company may incur Indebtedness (including Acquired Debt) or
issue shares of Disqualified Stock and the Company's Restricted Subsidiaries
may incur Indebtedness if, in each case, the Company's Debt to Adjusted
Consolidated Cash Flow Ratio at the time of incurrence of such Indebtedness or
the issuance of such Disqualified Stock, after giving pro forma effect to such
incurrence or issuance as of such date and to the use of proceeds therefrom as
if the same had occurred at the beginning of the most recently ended four full
fiscal quarter period of the Company for which internal financial statements
are available, would have been no greater than 7.5 to 1.
 
  The provisions of the first paragraph of this covenant will not apply to the
incurrence of any of the following items of Indebtedness or to the issuance of
any of the following items of Disqualified Stock or preferred stock
(collectively, "Permitted Debt"):
 
    (1) the incurrence by the Company or any of its Restricted Subsidiaries
  of Indebtedness (including Indebtedness under Credit Facilities) in an
  aggregate principal amount (with letters of credit being deemed to have a
  principal amount equal to the maximum potential liability of the Company
  and its Restricted Subsidiaries thereunder) at any one time outstanding not
  to exceed the greater of (x) $200.0 million less the aggregate amount of
  all Net Proceeds of Asset Sales applied to repay Indebtedness under a
  Credit Facility pursuant to the covenant described above under the caption
  "--Repurchase at the Option of Holders--Asset Sales" and (y) 70% of the
  Eligible Receivables that are outstanding as of such date of incurrence;
 
    (2) the incurrence by the Company and its Restricted Subsidiaries of the
  Existing Indebtedness;
 
    (3) the incurrence by the Company of the Indebtedness represented by the
  notes;
 
    (4) the incurrence by the Company of Indebtedness represented by the 12%
  Senior Subordinated Exchange Debentures due 2011;
 
    (5) the incurrence by the Company or any of its Restricted Subsidiaries
  of Indebtedness represented by Capital Lease Obligations, mortgage
  financings or purchase money obligations, in each case incurred for the
  purpose of financing all or any part of the purchase price or cost of
  construction or improvement of property, plant or equipment used in the
  business of the
  Company or such Restricted Subsidiary, in an aggregate principal amount,
  including all Permitted Refinancing Indebtedness incurred to refund,
  refinance or replace any other Indebtedness incurred pursuant to this
  clause (5), not to exceed $10.0 million at any one time outstanding;
 
    (6) the incurrence by the Company or any of its Restricted Subsidiaries
  of Permitted Refinancing Indebtedness in exchange for, or the net proceeds
  of which are used to extend, refinance, renew, replace, defease or refund
  Indebtedness of the Company or any of its Restricted Subsidiaries or
  Disqualified Stock of the Company (other than intercompany Indebtedness)
  that was permitted by the Indenture to be incurred under the first
  paragraph hereof or clauses (2), (3), (4), (5) or this clause (6) of this
  paragraph;
 
 
                                      149
<PAGE>
 
    (7) the incurrence by the Company or any of its Restricted Subsidiaries
  of intercompany Indebtedness between or among the Company and any of its
  Restricted Subsidiaries; provided, however, that (i) if the Company is the
  obligor on such Indebtedness, such Indebtedness is expressly subordinated
  to the prior payment in full in cash of all Obligations with respect to the
  notes and that (A) any subsequent issuance or transfer of Equity Interests
  that results in any such Indebtedness being held by a Person other than the
  Company or a Restricted Subsidiary and (B) any sale or other transfer of
  any such Indebtedness to a Person that is not either the Company or a
  Restricted Subsidiary shall be deemed, in each case, to constitute an
  incurrence of such Indebtedness by the Company or such Restricted
  Subsidiary, as the case may be;
 
    (8) the incurrence by the Company or any of its Restricted Subsidiaries
  of Hedging Obligations that are incurred for the purpose of fixing or
  hedging interest rate risk with respect to any floating rate Indebtedness
  that is permitted by the terms of the Indenture to be outstanding or
  currency exchange risk;
 
    (9) the guarantee by the Company or any of its Restricted Subsidiaries of
  Indebtedness of the Company or a Restricted Subsidiary of the Company that
  was permitted to be incurred by another provision of the Indenture;
 
    (10) the incurrence by the Company or any of its Restricted Subsidiaries
  of Acquired Debt in connection with the acquisition of assets or a new
  Subsidiary and the incurrence by the Company's Restricted Subsidiaries of
  Indebtedness as a result of the designation of an Unrestricted Subsidiary
  as a Restricted Subsidiary; provided that, in the case of any such
  incurrence of Acquired Debt, such Acquired Debt was incurred by the prior
  owner of such assets or such Restricted Subsidiary prior to such
  acquisition by the Company or one of its Restricted Subsidiaries and was
  not incurred in connection with, or in contemplation of, such acquisition
  by the Company or one of its Restricted Subsidiaries; and provided further
  that, in the case of any incurrence pursuant to this clause (10), as a
  result of such acquisition by the Company or one of its Restricted
  Subsidiaries, the Company's Debt to Adjusted Consolidated Cash Flow Ratio
  at the time of incurrence of such Acquired Debt, after giving pro forma
  effect to such incurrence as if the same had occurred at the beginning of
  the most recently ended four full fiscal quarter period of the Company for
  which internal financial statements are available, would have been less
  than the Company's Debt to Adjusted Consolidated Cash Flow Ratio for the
  same period without giving pro forma effect to such incurrence;
 
    (11) the incurrence by the Company of Indebtedness not to exceed, at any
  one time outstanding, the sum of (i) 2.0 times the aggregate net cash
  proceeds plus (ii) 1.0 times the fair market value of non-cash proceeds
  (evidenced by a resolution of the Board of Directors set forth in an
  Officers' Certificate delivered to the trustee), in each case, from the
  issuance and sale, other than to a Subsidiary, of Equity Interests (other
  than Disqualified Stock) of the Company since the IPO Date (less the amount
  of such proceeds used to make Restricted Payments as provided in clause
  (c)(ii) of the first paragraph or clause (2) of the second paragraph of the
  covenant described above under the caption "--Restricted Payments");
  provided that such Indebtedness does not mature prior to the Stated
  Maturity of the notes and the Weighted Average Life to Maturity of such
  Indebtedness is longer than that of the notes; and
 
    (12) the incurrence by the Company or any of its Restricted Subsidiaries
  of additional Indebtedness and/or the issuance by the Company of
  Disqualified Stock in an aggregate principal amount, accreted value or
  liquidation preference, as applicable, at any time outstanding, not to
  exceed an amount equal to $100.0 million less the aggregate amount of all
  Investments made pursuant to clause (12) of the definition of Permitted
  Investments; provided that, notwithstanding the foregoing, the aggregate
  principal amount, accreted value or liquidation preference, as applicable,
  permitted to be incurred or issued pursuant to this clause (12) shall not
  be reduced to less than $25.0 million.
 
 
                                      150
<PAGE>
 
    The Indenture will also provide that (i) the Company will not incur any
Indebtedness that is contractually subordinated in right of payment to any
other Indebtedness of the Company unless such Indebtedness is also
contractually subordinated in right of payment to the notes on substantially
identical terms; provided, however, that no Indebtedness of the Company shall
be deemed to be contractually subordinated in right of payment to any other
Indebtedness of the Company solely by virtue of being unsecured and (ii) the
Company will not permit any of its Unrestricted Subsidiaries to incur any
Indebtedness other than Non-Recourse Debt.
 
    For purposes of determining compliance with this covenant, in the event
that an item of Indebtedness meets the criteria of more than one of the
categories of Permitted Debt described in clauses (1) through (12) above or is
entitled to be incurred pursuant to the first paragraph of this covenant, the
Company shall, in its sole discretion, classify (or later reclassify in whole
or in part) such item of Indebtedness in any manner that complies with this
covenant. Accrual of interest, accretion or amortization of original issue
discount and the payment of interest in the form of additional Indebtedness
will not be deemed to be an incurrence of Indebtedness for purposes of this
covenant. Indebtedness under Credit Facilities outstanding on the date of the
Indenture shall be deemed to have been incurred on such date in reliance on the
exception provided by clause (1) of the definition of Permitted Debt.
 
Liens
 
    The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create, incur, assume or suffer to
exist any Lien securing Indebtedness or trade payables on any asset now owned
or hereafter acquired, or any income or profits therefrom or assign or convey
any right to receive income therefrom, except Permitted Liens.
 
Dividend and Other Payment Restrictions Affecting Subsidiaries
 
    The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create or otherwise cause or suffer to
exist or become effective any encumbrance or restriction on the ability of any
Restricted Subsidiary to:
 
    (1) pay dividends or make any other distributions to the Company or any
  of its Restricted Subsidiaries on its Capital Stock or with respect to any
  other interest or participation in, or measured by, its profits;
 
    (2) pay any indebtedness owed to the Company or any of its Restricted
  Subsidiaries;
 
    (3) make loans or advances to the Company or any of its Restricted
  Subsidiaries; or
 
    (4) transfer any of its properties or assets to the Company or any of its
  Restricted Subsidiaries.
 
    However, the foregoing restrictions will not apply to encumbrances or
restrictions existing under or by reason of:
 
    (1) Existing Indebtedness or Indebtedness under the Senior Credit
  Facility, in each case as in effect on the date of the Indenture, and any
  amendments, modifications, restatements, renewals, increases, supplements,
  refundings, replacements or refinancings thereof; provided that such
  amendments, modifications, restatements, renewals, increases, supplements,
  refundings, replacements or refinancings are no more restrictive, taken as
  a whole, with respect to such dividend and other payment restrictions than
  those contained in the applicable series of Existing Indebtedness or in the
  Senior Credit Facility, in each case as in effect on the date of the
  Indenture;
 
 
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<PAGE>
 
    (2) encumbrances and restrictions applicable to any Unrestricted
  Subsidiary, as the same are in effect as of the date on which such
  Subsidiary becomes a Restricted Subsidiary, and as the same may be amended,
  modified, restated, renewed, increased, supplemented, refunded, replaced or
  refinanced; provided that such amendments, modifications, restatements,
  renewals, increases, supplements, refundings, replacement or refinancings
  are no more restrictive, taken as a whole, with respect to such dividend
  and other payment restrictions than those contained in the applicable
  series of Indebtedness of such Subsidiary as in effect on the date on which
  such Subsidiary becomes a Restricted Subsidiary;
 
    (3) any Indebtedness (incurred in compliance with the covenant under the
  heading "--Incurrence of Indebtedness and Issuance of Preferred Stock") or
  any agreement pursuant to which such Indebtedness is issued if the
  encumbrance or restriction applies only in the event of a payment default
  or default with respect to a financial covenant contained in such
  Indebtedness or agreement and such encumbrance or restriction is not
  materially more disadvantageous to the holders of the notes than is
  customary in comparable financings (as determined by the Company) and the
  Company determines that any such encumbrance or restriction will not
  materially affect the Company's ability to pay interest or principal on the
  notes;
 
    (4) the Indenture;
 
    (5) applicable law;
 
    (6) any instrument governing Indebtedness or Capital Stock of a Person
  acquired by the Company or any of its Restricted Subsidiaries as in effect
  at the time of such acquisition (except to the extent such Indebtedness was
  incurred in connection with or in contemplation of such acquisition), which
  encumbrance or restriction is not applicable to any Person, or the
  properties or assets of any Person, other than the Person, or the property
  or assets of the Person, so acquired, provided that, in the case of
  Indebtedness, such Indebtedness was permitted by the terms of the Indenture
  to be incurred;
 
    (7) by reason of customary non-assignment provisions in leases or
  licenses entered into in the ordinary course of business;
 
    (8) purchase money obligations for property acquired in the ordinary
  course of business that impose restrictions of the nature described in
  clause (4) in the prior paragraph on the property so acquired;
 
    (9) the provisions of agreements governing Indebtedness incurred pursuant
  to clause (4) of the second paragraph of the covenant described above under
  the caption "--Incurrence of Indebtedness and Issuance of Preferred Stock";
 
    (10) any agreement for the sale of a Restricted Subsidiary that restricts
  that Restricted Subsidiary pending its sale;
 
    (11) Permitted Refinancing Indebtedness, provided that the restrictions
  contained in the agreements governing such Permitted Refinancing
  Indebtedness are no more restrictive, taken as a whole, than those
  contained in the agreements governing the Indebtedness being refinanced;
 
    (12) Liens permitted to be incurred pursuant to the provisions of the
  covenant described under the caption "Liens" that limit the right of the
  debtor to transfer the assets subject to such Liens;
 
    (13) provisions with respect to the disposition or distribution of assets
  or property in joint venture agreements and other similar agreements; and
 
    (14) restrictions on cash or other deposits or net worth imposed by
  customers under contracts entered into in the ordinary course of business.
 
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<PAGE>
 
Merger, Consolidation or Sale of Assets
 
    The Company may not consolidate or merge with or into (whether or not the
Company is the surviving corporation), or sell, assign, transfer, lease, convey
or otherwise dispose of all or substantially all of its properties or assets in
one or more related transactions, to another corporation, Person or entity
unless:
 
    (1) the Company is the surviving corporation or the entity or the Person
  formed by or surviving any such consolidation or merger (if other than the
  Company) or to which such sale, assignment, transfer, lease, conveyance or
  other disposition shall have been made is a corporation organized or
  existing under the laws of the United States, any state thereof or the
  District of Columbia;
 
    (2) the entity or Person formed by or surviving any such consolidation or
  merger (if other than the Company) or the entity or Person to which such
  sale, assignment, transfer, lease, conveyance or other disposition shall
  have been made assumes all the obligations of the Company under the notes
  and the Indenture pursuant to a supplemental indenture in a form reasonably
  satisfactory to the trustee;
 
    (3) immediately after such transaction no Default exists; and
 
    (4) except in the case of a merger of the Company with or into a Wholly
  Owned Restricted Subsidiary of the Company and except in the case of a
  merger entered into solely for the purpose of reincorporating the Company
  in another jurisdiction, the Company or the entity or Person formed by or
  surviving any such consolidation or merger (if other than the Company), or
  to which such sale, assignment, transfer, lease, conveyance or other
  disposition shall have been made will, at the time of such transaction and
  after giving pro forma effect thereto as if such transaction had occurred
  at the beginning of the applicable four-quarter period, be permitted to
  incur at least $1.00 of additional Indebtedness pursuant to the Debt to
  Adjusted Consolidated Cash Flow Ratio test set forth in the first paragraph
  of the covenant described above under the caption "--Incurrence of
  Indebtedness and Issuance of Preferred Stock."
 
Transactions with Affiliates
 
    The Company will not, and will not permit any of its Restricted
Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise
dispose of any of its properties or assets to, or purchase any property or
assets from, or enter into or make or amend any transaction, contract,
agreement, understanding, loan, advance or guarantee with, or for the benefit
of, any Affiliate (each of the foregoing, an "Affiliate Transaction"), unless:
 
    (1) such Affiliate Transaction is on terms that are no less favorable to
  the Company or the relevant Restricted Subsidiary than those that would
  have been obtained in a comparable transaction by the Company or such
  Restricted Subsidiary with an unrelated Person; and
 
    (2) the Company delivers to the trustee:
 
      (a) with respect to any Affiliate Transaction or series of related
    Affiliate Transactions involving aggregate consideration in excess of
    $1.0 million, a resolution of the Board of Directors set forth in an
    Officers' Certificate certifying that such Affiliate Transaction
    complies with clause (1) above and that such Affiliate Transaction has
    been approved by a majority of the disinterested members of the Board
    of Directors; and
 
      (b) with respect to any Affiliate Transaction or series of related
    Affiliate Transactions involving aggregate consideration in excess of
    $10.0 million, an opinion as to the fairness to the holders of such
    Affiliate Transaction from a financial point of view issued by an
    accounting, appraisal or investment banking firm of national standing.
 
 
                                      153
<PAGE>
 
    Notwithstanding the foregoing, the following items shall not be deemed to
be Affiliate Transactions:
 
    (1) any employment arrangements with any executive officer of the Company
  or a Restricted Subsidiary that is entered into by the Company or any of
  its Restricted Subsidiaries in the ordinary course of business and
  consistent with compensation arrangements of similarly situated executive
  officers at comparable companies engaged in Permitted Businesses;
 
    (2) transactions between or among the Company and/or its Restricted
  Subsidiaries;
 
    (3) payment of directors fees in an aggregate annual amount not to exceed
  $25,000 per Person;
 
    (4) Restricted Payments that are permitted by the provisions of the
  Indenture described above under the caption "--Restricted Payments";
 
    (5) the issuance or sale of Equity Interests (other than Disqualified
  Stock) of the Company; and
 
    (6) transactions pursuant to the provisions of the Governance Agreement,
  the Rights Agreement, the Stockholders' Agreement, the CTSH Shareholders'
  Agreement, the CTI Services Agreement, the CTI Operating Agreement and the
  Crown Transition Agreements, as the same are in effect on the date of the
  Indenture.
 
Sale and Leaseback Transactions
 
    The Company will not, and will not permit any of its Restricted
Subsidiaries to, enter into any sale and leaseback transaction; provided that
the Company or any of its Restricted Subsidiaries may enter into a sale and
leaseback transaction if:
 
    (1) the Company or such Restricted Subsidiary, as applicable, could have:
 
      (a) incurred Indebtedness in an amount equal to the Attributable Debt
    relating to such sale and leaseback transaction pursuant to the Debt to
    Adjusted Consolidated Cash Flow Ratio test set forth in the first
    paragraph of the covenant described above under the caption "--
    Incurrence of Indebtedness and Issuance of Preferred Stock";
 
      (b) incurred a Lien to secure such Indebtedness pursuant to the
    covenant described above under the caption "--Liens";
 
    (2) the gross cash proceeds of such sale and leaseback transaction are
  at least equal to the fair market value (as determined in good faith by
  the Board of Directors) of the property that is the subject of such sale
  and leaseback transaction; and
 
    (3) the transfer of assets in such sale and leaseback transaction is
  permitted by, and the Company applies the proceeds of such transaction in
  compliance with, the covenant described above under the caption "--
  Repurchase at the Option of Holders--Asset Sales."
 
Limitation on Issuances and Sales of Capital Stock of Restricted Subsidiaries
 
    The Company:
 
    (1) will not, and will not permit any Restricted Subsidiary of the
  Company to, transfer, convey, sell, lease or otherwise dispose of any
  Equity Interests in any Restricted Subsidiary of the Company to any Person
  (other than the Company or a Wholly Owned Restricted Subsidiary of the
  Company); and
 
    (2) will not permit any Restricted Subsidiary of the Company to issue
  any of its Equity Interests (other than, if necessary, shares of its
  Capital Stock constituting directors' qualifying
 
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<PAGE>
 
  shares) to any Person other than to the Company or a Wholly Owned
  Restricted Subsidiary of the Company, unless, in each such case:
 
       (a) as a result of such transfer, conveyance, sale, lease or other
     disposition or issuance such Restricted Subsidiary no longer
     constitutes a Subsidiary; and
 
       (b) the cash Net Proceeds from such transfer, conveyance, sale,
     lease or other disposition or issuance are applied in accordance with
     the covenant described above under the caption "--Repurchase at the
     Option of Holders--Asset Sales."
 
Limitations on Issuances of Guarantees of Indebtedness
 
    The Company will not permit any Restricted Subsidiary, directly or
indirectly, to Guarantee or pledge any assets to secure the payment of any
other Indebtedness of the Company unless such Subsidiary simultaneously
executes and delivers a supplemental indenture to the Indenture providing for
the Guarantee of the payment of the notes by such Subsidiary, which Guarantee
shall be senior to or pari passu with such Subsidiary's Guarantee of or pledge
to secure such other Indebtedness. Notwithstanding the foregoing, any such
Guarantee by a Subsidiary of the notes shall provide by its terms that it shall
be automatically and unconditionally released and discharged upon any sale,
exchange or transfer, to any Person other than a Subsidiary of the Company, of
all of the Company's stock in, or all or substantially all the assets of, such
Subsidiary, which sale, exchange or transfer is made in compliance with the
applicable provisions of the Indenture. The form of such Guarantee will be
attached as an exhibit to the Indenture.
 
Business Activities
 
    The Company will not, and will not permit any Subsidiary to, engage in any
business other than Permitted Businesses, except to such extent as would not be
material to the Company and its Subsidiaries taken as a whole.
 
Reports
 
    Whether or not required by the rules and regulations of the Securities and
Exchange Commission (the "Commission"), so long as any notes are outstanding,
the Company will furnish to the holders of notes:
 
    (1) all quarterly and annual financial information that would be
  required to be contained in a filing with the Commission on Forms 10-Q and
  10-K if the Company were required to file such Forms, including a
  "Management's Discussion and Analysis of Financial Condition and Results
  of Operations" that describes the financial condition and results of
  operations of the Company and its consolidated Subsidiaries (showing in
  reasonable detail, in the footnotes to the financial statements and in
  "Management's Discussion and Analysis of Financial Condition and Results
  of Operations" (in each case to the extent not prohibited by the
  Commission's rules and regulations);
 
       (a) the financial condition and results of operations of the Company
     and its Restricted Subsidiaries separate from the financial condition
     and results of operations of the Unrestricted Subsidiaries of the
     Company; and
 
       (b) the Tower Cash Flow for the most recently completed fiscal
     quarter and the Adjusted Consolidated Cash Flow for the most recently
     completed four-quarter period) and, with respect to the annual
     information only, a report thereon by the Company's certified
     independent accountants; and
 
 
                                      155
<PAGE>
 
    (2) all current reports that would be required to be filed with the
  Commission on Form 8-K if the Company were required to file such reports,
  in each case within the time periods specified in the Commission's rules
  and regulations.
 
    In addition, whether or not required by the rules and regulations of the
Commission, the Company will file a copy of all such information and reports
with the Commission for public availability within the time periods specified
in the Commission's rules and regulations (unless the Commission will not
accept such a filing) and make such information available to securities
analysts and prospective investors upon request.
 
Events of Default and Remedies
 
    Each of the following constitutes an Event of Default:
 
    (1) default for 30 days in the payment when due of interest on the
  notes;
 
    (2) default in payment when due of the principal of or premium, if any,
  on the notes;
 
    (3) failure by the Company or any of its Subsidiaries to comply with the
  provisions described under the caption "--Certain Covenants--Merger,
  Consolidation or Sale of Assets" or failure by the Company to consummate a
  Change of Control Offer or Asset Sale Offer in accordance with the
  provisions of the Indenture applicable thereto;
 
    (4) failure by the Company or any of its Subsidiaries for 30 days after
  notice to comply with any of its other agreements in the Indenture or the
  notes;
 
    (5) default under any mortgage, indenture or instrument under which
  there may be issued or by which there may be secured or evidenced any
  Indebtedness for money borrowed by the Company or any of its Significant
  Subsidiaries (or the payment of which is guaranteed by the Company or any
  of its Significant Subsidiaries) whether such Indebtedness or guarantee
  now exists, or is created after the date of the Indenture, which default:
 
       (a) is caused by a failure to pay principal of or premium, if any,
     or interest on such Indebtedness prior to the expiration of the grace
     period provided in such Indebtedness on the date of such default (a
     "Payment Default"); or
 
       (b) results in the acceleration of such Indebtedness prior to its
     express maturity and, in each case, the principal amount of any such
     Indebtedness, together with the principal amount of any other such
     Indebtedness under which there has been a Payment Default or the
     maturity of which has been so accelerated, aggregates $20.0 million or
     more;
 
    (6) failure by the Company or any of its Significant Subsidiaries to pay
  final judgments aggregating in excess of $20.0 million, which judgments
  are not paid, discharged or stayed for a period of 60 days; or
 
    (7) certain events of bankruptcy or insolvency with respect to the
  Company or any of its Restricted Subsidiaries.
 
    If any Event of Default occurs and is continuing, the trustee or the
holders of at least 25% in principal amount at maturity of the then outstanding
notes may declare all the notes to be due and payable immediately.
Notwithstanding the foregoing, in the case of an Event of Default arising from
certain events of bankruptcy or insolvency, with respect to the Company, all
outstanding notes will become due and payable without further action or notice.
Holders of the notes may not enforce the Indenture or the notes except as
provided in the Indenture. Subject to certain limitations, holders of a
majority in principal amount at maturity of the then outstanding notes may
direct the trustee in its exercise of any trust or power.
 
 
                                      156
<PAGE>
 
    The holders of a majority in aggregate principal amount at maturity of the
notes then outstanding by notice to the trustee may on behalf of the holders of
all of the notes waive any existing Default or Event of Default and its
consequences under the Indenture except a continuing Default or Event of
Default in the payment of interest on, or the principal of, the notes.
 
    The Indenture provides that if a Default occurs and is continuing and is
known to the trustee, the trustee must mail to each holder of the notes notice
of the Default within 90 days after it occurs. Except in the case of a Default
in the payment of principal of or interest on any note, the trustee may
withhold notice if and so long as a committee of its trust officers determines
that withholding notice is not opposed to the interest of the holders of the
notes. In addition, the Company is required to deliver to the trustee, within
90 days after the end of each fiscal year, a certificate indicating whether the
signers thereof know of any Default that occurred during the previous year. The
Company is also required to deliver to the trustee, forthwith after the
occurrence thereof, written notice of any event that would constitute a
Default, the status thereof and what action the Company is taking or proposes
to take in respect thereof.
 
No Personal Liability of Directors, Officers, Employees and Stockholders
 
    No director, officer, employee, incorporator or stockholder of the Company,
as such, shall have any liability for any obligations of the Company under the
notes, the Indenture or for any claim based on, in respect of, or by reason of,
such obligations or their creation. Each holder of notes by accepting a note
waives and releases all such liability. The waiver and release are part of the
consideration for issuance of the notes. Such waiver may not be effective to
waive liabilities under the federal securities laws and it is the view of the
Commission that such a waiver is against public policy.
 
Legal Defeasance and Covenant Defeasance
 
    The Company may, at its option and at any time, elect to have all of its
obligations discharged with respect to the outstanding notes ("Legal
Defeasance") except for:
 
    (1) the rights of holders of outstanding notes to receive payments in
  respect of the principal of, premium, if any, and interest on such notes
  when such payments are due from the trust referred to below;
 
    (2) the Company's obligations with respect to the notes concerning
  issuing temporary notes, registration of notes, mutilated, destroyed, lost
  or stolen notes and the maintenance of an office or agency for payment and
  money for security payments held in trust;
 
    (3) the rights, powers, trusts, duties and immunities of the trustee,
  and the Company's obligations in connection therewith; and
 
    (4) the Legal Defeasance provisions of the Indenture.
 
    In addition, the Company may, at its option and at any time, elect to have
the obligations of the Company released with respect to certain covenants that
are described in the Indenture ("Covenant Defeasance") and thereafter any
omission to comply with such obligations shall not constitute a Default or
Event of Default with respect to the notes. In the event Covenant Defeasance
occurs, certain events (not including non-payment and bankruptcy, receivership,
rehabilitation and insolvency events with respect to the Company) described
under "--Events of Default and Remedies" will no longer constitute an Event of
Default with respect to the notes.
 
    In order to exercise either Legal Defeasance or Covenant Defeasance:
 
    (1) the Company must irrevocably deposit with the trustee, in trust, for
  the benefit of the holders of the notes, cash in United States dollars,
  non-callable Government Securities, or a
 
                                      157
<PAGE>
 
  combination thereof, in such amounts as will be sufficient, in the opinion
  of a nationally recognized firm of independent public accountants, to pay
  the principal of, premium, if any, and interest on the outstanding notes
  on the stated maturity or on the applicable redemption date, as the case
  may be, and the Company must specify whether the notes are being defeased
  to maturity or to a particular redemption date;
 
    (2) in the case of Legal Defeasance, the Company shall have delivered to
  the trustee an opinion of counsel in the United States reasonably
  acceptable to the trustee confirming that (A) the Company has received
  from, or there has been published by, the Internal Revenue Service a
  ruling or (B) since the date of the Indenture, there has been a change in
  the applicable federal income tax law, in either case to the effect that,
  and based thereon such opinion of counsel shall confirm that, the holders
  of the outstanding notes will not recognize income, gain or loss for
  federal income tax purposes as a result of such Legal Defeasance and will
  be subject to federal income tax on the same amounts, in the same manner
  and at the same times as would have been the case if such Legal Defeasance
  had not occurred;
 
    (3) in the case of Covenant Defeasance, the Company shall have delivered
  to the trustee an opinion of counsel in the United States reasonably
  acceptable to the trustee confirming that the holders of the outstanding
  notes will not recognize income, gain or loss for federal income tax
  purposes as a result of such Covenant Defeasance and will be subject to
  federal income tax on the same amounts, in the same manner and at the same
  times as would have been the case if such Covenant Defeasance had not
  occurred;
 
    (4) no Default or Event of Default shall have occurred and be continuing
  on the date of such deposit (other than a Default or Event of Default
  resulting from the borrowing of funds to be applied to such deposit) or
  insofar as Events of Default from bankruptcy or insolvency events with
  respect to the Company are concerned, at any time in the period ending on
  the 91st day after the date of deposit;
 
    (5) such Legal Defeasance or Covenant Defeasance will not result in a
  breach or violation of, or constitute a default under any material
  agreement or instrument (other than the Indenture) to which the Company or
  any of its Restricted Subsidiaries is a party or by which the Company or
  any of its Restricted Subsidiaries is bound;
 
    (6) the Company must have delivered to the trustee an opinion of counsel
  to the effect that after the 91st day following the deposit, the trust
  funds will not be subject to the effect of any applicable bankruptcy,
  insolvency, reorganization or similar laws affecting creditors' rights
  generally;
 
    (7) the Company must deliver to the trustee an Officers' Certificate
  stating that the deposit was not made by the Company with the intent of
  preferring the holders of notes over the other creditors of the Company
  with the intent of defeating, hindering, delaying or defrauding creditors
  of the Company or others; and
 
    (8) the Company must deliver to the trustee an Officers' Certificate and
  an opinion of counsel, each stating that all conditions precedent provided
  for relating to the Legal Defeasance or the Covenant Defeasance have been
  complied with.
 
Transfer and Exchange
 
    A holder may transfer or exchange notes in accordance with the Indenture.
The registrar and the trustee may require a holder, among other things, to
furnish appropriate endorsements and transfer documents and the Company may
require a holder to pay any taxes and fees required by
 
                                      158
<PAGE>
 
law. The Company is not required to transfer or exchange any note selected for
redemption. Also, the Company is not required to transfer or exchange any note
for a period of 15 days before a selection of notes to be redeemed.
 
    The registered holder of a note will be treated as the owner of it for all
purposes.
 
Amendment, Supplement and Waiver
 
    Except as provided in the next two succeeding paragraphs, the Indenture or
the notes may be amended or supplemented with the consent of the holders of at
least a majority in principal amount at maturity of the notes then outstanding
(including, without limitation, consents obtained in connection with a purchase
of, or tender offer or exchange offer for, notes), and any existing default or
compliance with any provision of the Indenture or the notes may be waived with
the consent of the holders of a majority in principal amount at maturity of the
then outstanding notes (including consents obtained in connection with a tender
offer or exchange offer for notes).
 
    Without the consent of each holder affected, an amendment or waiver may not
(with respect to any notes held by a non-consenting holder):
 
  (1) reduce the principal amount of notes whose holders must consent to an
     amendment, supplement or waiver;
 
  (2) reduce the principal of or change the fixed maturity of any note or
     alter the provisions with respect to the redemption (but not any
     required repurchase in connection with an Asset Sale Offer or Change of
     Control Offer) of the notes;
 
  (3) reduce the rate of or change the time for payment of interest on any
     note;
 
  (4) waive a Default or Event of Default in the payment of principal of or
     premium, if any, or interest on the notes (except a rescission of
     acceleration of the notes by the holders of at least a majority in
     aggregate principal amount of the notes and a waiver of the payment
     default that resulted from such acceleration);
 
  (5) make any note payable in money other than that stated in the notes;
 
  (6) make any change in the provisions of the Indenture relating to waivers
     of past Defaults or the rights of holders of notes to receive payments
     of principal of or premium, if any, or interest on the notes;
 
  (7) waive a redemption payment (but not any payment upon a required
     repurchase in connection with an Asset Sale Offer or Change of Control
     Offer) with respect to any note;
 
  (8) except as provided under the caption "--Legal Defeasance and Covenant
     Defeasance" or in accordance with the terms of any Subsidiary
     Guarantee, release a Subsidiary Guarantor from its obligations under
     its Subsidiary Guarantee or make any change in a Subsidiary Guarantee
     that would adversely affect the holders of the notes; or
 
  (9) make any change in the foregoing amendment and waiver provisions.
 
    Notwithstanding the foregoing, without the consent of any holder of notes,
the Company and the trustee may amend or supplement the Indenture or the notes
to cure any ambiguity, defect or inconsistency, to provide for uncertificated
notes in addition to or in place of certificated notes, to provide for the
assumption of the Company's obligations to holders of notes in the case of a
merger or consolidation, to make any change that would provide any additional
rights or benefits to the holders of notes or that does not adversely affect
the legal rights under the Indenture of any such holder, or to comply with
requirements of the Commission in order to effect or maintain the qualification
of the Indenture under the Trust Indenture Act.
 
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<PAGE>
 
Concerning the Trustee
 
    The Indenture contains certain limitations on the rights of the trustee,
should it become a creditor of the Company, to obtain payment of claims in
certain cases, or to realize on certain property received in respect of any
such claim as security or otherwise. The trustee will be permitted to engage in
other transactions; however, if it acquires any conflicting interest it must
eliminate such conflict within 90 days, apply to the Commission for permission
to continue or resign.
 
    The holders of a majority in principal amount at maturity of the then
outstanding notes will have the right to direct the time, method and place of
conducting any proceeding for exercising any remedy available to the trustee,
subject to certain exceptions. The Indenture provides that in case an Event of
Default shall occur (which shall not be cured), the trustee will be required,
in the exercise of its power, to use the degree of care of a prudent man in the
conduct of his own affairs. Subject to such provisions, the trustee will be
under no obligation to exercise any of its rights or powers under the Indenture
at the request of any holder of notes, unless such holder shall have offered to
the trustee security and indemnity satisfactory to it against any loss,
liability or expense.
 
Additional Information
 
    Anyone who receives this prospectus may obtain a copy of the Indenture and
Registration Rights Agreement without charge by writing to Crown Castle
International Corp., 510 Bering Drive, Suite 500, Houston, Texas 77057,
Attention: Chief Financial Officer.
 
Certain Definitions
 
    Set forth below are certain defined terms used in the Indenture. Reference
is made to the Indenture for a full disclosure of all such terms, as well as
any other capitalized terms used herein for which no definition is provided.
 
    "Accreted Value" means, as of any date of determination the sum of:
 
  (1) the initial Accreted Value (which is $      per $1,000 in principal
     amount at maturity of notes); and
 
  (2) the portion of the excess of the principal amount at maturity of each
     note over such initial Accreted Value which shall have been amortized
     through such date, such amount to be so amortized on a daily basis and
     compounded semiannually on each             and             at the rate
     of   % per annum from the date of original issuance of the notes
     through the date of determination computed on the basis of a 360-day
     year of twelve 30-day months.
 
The Accreted Value of any note on or after the Full Accretion Date shall be
equal to 100% of its stated principal amount.
 
    "Acquired Debt" means, with respect to any specified Person:
 
  (1) Indebtedness of any other Person existing at the time such other
     Person is merged with or into or became a Subsidiary of such specified
     Person, including, without limitation, Indebtedness incurred in
     connection with, or in contemplation of, such other Person merging with
     or into or becoming a Subsidiary of such specified Person; and
 
  (2) Indebtedness secured by a Lien encumbering any asset acquired by such
     specified Person.
 
    "Adjusted Consolidated Cash Flow" has the meaning given to such term in the
definition of "Debt to Adjusted Consolidated Cash Flow Ratio."
 
 
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    "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For purposes of this definition, "control"
(including, with correlative meanings, the terms "controlling," "controlled by"
and "under common control with"), as used with respect to any Person, shall
mean the possession, directly or indirectly, of the power to direct or cause
the direction of the management or policies of such Person, whether through the
ownership of voting securities, by agreement or otherwise; provided that
beneficial ownership of 10% or more of the Voting Stock of a Person shall be
deemed to be control.
 
    "Asset Sale" means:
 
  (1) the sale, lease, conveyance or other disposition of any assets or
     rights (including, without limitation, by way of a sale and leaseback)
     provided that the sale, lease, conveyance or other disposition of all
     or substantially all of the assets of the Company and its Subsidiaries
     taken as a whole will be governed by the provisions of the Indenture
     described above under the caption "--Repurchase at the Option of
     Holders--Change of Control" and/or the provisions described above under
     the caption "--Repurchase at the Option of Holders --Merger,
     Consolidation or Sale of Assets" and not by the provisions of the Asset
     Sale covenant; and
 
  (2) the issue or sale by the Company or any of its Restricted Subsidiaries
     of Equity Interests of any of the Company's Subsidiaries (other than
     directors' qualifying shares or shares required by applicable law to be
     held by a Person other than the Company or a Restricted Subsidiary), in
     the case of either clause (1) or (2), whether in a single transaction
     or a series of related transactions:
 
    (a) that have a fair market value in excess of $1.0 million; or
 
    (b) for net proceeds in excess of $1.0 million.
 
    Notwithstanding the foregoing, the following items shall not be deemed to
be Asset Sales:
 
  (1) a transfer of assets by the Company to a Restricted Subsidiary or by a
     Restricted Subsidiary to the Company or to another Restricted
     Subsidiary;
 
  (2) an issuance of Equity Interests by a Subsidiary to the Company or to
     another Restricted Subsidiary;
 
  (3) a Restricted Payment that is permitted by the covenant described above
     under the caption "--Certain Covenants--Restricted Payments";
 
  (4) grants of leases or licenses in the ordinary course of business; and
 
  (5) disposals of Cash Equivalents.
 
    "Attributable Debt" in respect of a sale and leaseback transaction means,
at the time of determination, the present value (discounted at the rate of
interest implicit in such transaction, determined in accordance with GAAP) of
the obligation of the lessee for net rental payments during the remaining term
of the lease included in such sale and leaseback transaction (including any
period for which such lease has been extended or may, at the option of the
lessor, be extended).
 
    "BAM" means Cellco Partnership, a Delaware general partnership doing
business as Bell Atlantic Mobile.
 
    "Berkshire Group" means Berkshire Fund III, A Limited Partnership,
Berkshire Fund IV, Limited Partnership, Berkshire Investors LLC and Berkshire
Partners LLC.
 
    "Broker-Dealer" means any broker or dealer registered under the Exchange
Act.
 
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<PAGE>
 
    "Capital Lease Obligation" means, at the time any determination thereof is
to be made, the amount of the liability in respect of a capital lease that
would at such time be required to be capitalized on a balance sheet in
accordance with GAAP.
 
    "Capital Stock" means:
 
  (1) in the case of a corporation, corporate stock;
 
  (2) in the case of an association or business entity, any and all shares,
     interests, participations, rights or other equivalents (however
     designated) of corporate stock;
 
  (3) in the case of a partnership or limited liability company, partnership
     or membership interests (whether general or limited); and
 
  (4) any other interest or participation that confers on a Person the right
     to receive a share of the profits and losses of, or distributions of
     assets of, the issuing Person.
 
    "Cash Equivalents" means:
 
  (1) United States dollars;
 
  (2) securities issued or directly and fully guaranteed or insured by the
     United States government or any agency or instrumentality thereof
     (provided that the full faith and credit of the United States is
     pledged in support thereof) having maturities of not more than six
     months from the date of acquisition;
 
  (3) certificates of deposit and eurodollar time deposits with maturities
     of six months or less from the date of acquisition, bankers'
     acceptances with maturities not exceeding six months and overnight bank
     deposits, in each case with any lender party to the Senior Credit
     Facility or with any domestic commercial bank having capital and
     surplus in excess of $500.0 million and a Thompson Bank Watch Rating of
     "B" or better;
 
  (4) repurchase obligations with a term of not more than seven days for
     underlying securities of the types described in clauses (2) and (3)
     above entered into with any financial institution meeting the
     qualifications specified in clause (3) above;
 
  (5) commercial paper having the highest rating obtainable from Moody's
     Investors Service, Inc. or Standard & Poor's Ratings Group and in each
     case maturing within six months after the date of acquisition; and
 
  (6) money market funds at least 95% of the assets of which constitute Cash
     Equivalents of the kinds described in clauses (1)-(5) of this
     definition.
 
    "CCAIC" means CCA Investment Corp., which is an indirect wholly owned
Subsidiary of the Company and was formed to hold the Company's Equity Interests
in Crown Atlantic Holding Company LLC.
 
    "Centennial Group" means Centennial Fund IV, L.P., Centennial Fund V, L.P.
and Centennial Entrepreneurs Fund V, L.P.
 
    "Change of Control" means the occurrence of any of the following:
 
  (1) the sale, lease, transfer, conveyance or other disposition (other than
     by way of merger or consolidation), in one or a series of related
     transactions, of all or substantially all of the assets of the Company
     and its Restricted Subsidiaries, taken as a whole to any "person" (as
     such term is used in Section 13(d)(3) of the Exchange Act) other than a
     Principal or a Related Party of a Principal;
 
  (2) the adoption of a plan relating to the liquidation or dissolution of
     the Company;
 
 
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<PAGE>
 
  (3) the consummation of any transaction (including, without limitation,
     any merger or consolidation) the result of which is that any "person"
     (as defined above), other than the Principals and their Related
     Parties, becomes the "beneficial owner" (as such term is defined in
     Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that a person
     shall be deemed to have "beneficial ownership" of all securities that
     such person has the right to acquire, whether such right is currently
     exercisable or is exercisable only upon the occurrence of a subsequent
     condition), directly or indirectly, of more than 50% of the Voting
     Stock of the Company (measured by voting power rather than number of
     shares); provided that transfers of Equity Interests in the Company
     between or among the beneficial owners of the Company's Equity
     Interests and/or Equity Interests in CTSH, in each case as of the date
     of the Indenture, will not be deemed to cause a Change of Control under
     this clause (3) so long as no single Person together with its
     Affiliates acquires a beneficial interest in more of the Voting Stock
     of the Company than is at the time collectively beneficially owned by
     the Principals and their Related Parties;
 
  (4) the first day on which a majority of the members of the Board of
     Directors of the Company are not Continuing Directors; or
 
  (5) the Company consolidates with, or merges with or into, any Person, or
     any Person consolidates with, or merges with or into, the Company, in
     any such event pursuant to a transaction in which any of the
     outstanding Voting Stock of the Company is converted into or exchanged
     for cash, securities or other property, other than any such transaction
     where:
 
      (a) the Voting Stock of the Company outstanding immediately prior to
    such transaction is converted into or exchanged for Voting Stock (other
    than Disqualified Stock) of the surviving or transferee Person
    constituting a majority of the outstanding shares of such Voting Stock
    of such surviving or transferee Person (immediately after giving effect
    to such issuance); or
 
      (b) the Principals and their Related Parties own a majority of such
    outstanding shares after such transaction.
 
  "Consolidated Cash Flow" means, with respect to any Person for any period,
the Consolidated Net Income of such Person for such period; plus
 
    (1) provision for taxes based on income or profits of such Person and its
  Restricted Subsidiaries for such period, to the extent that such provision
  for taxes was included in computing such Consolidated Net Income; plus
 
    (2) consolidated interest expense of such Person and its Restricted
  Subsidiaries for such period, whether paid or accrued and whether or not
  capitalized (including, without limitation, amortization of debt issuance
  costs and original issue discount, non-cash interest payments, the interest
  component of any deferred payment obligations, the interest component of
  all payments associated with Capital Lease Obligations, imputed interest
  with respect to Attributable Debt, commissions, discounts and other fees
  and charges incurred in respect of letter of credit or bankers' acceptance
  financings, and net payments (if any) pursuant to Hedging Obligations), to
  the extent that any such expense was deducted in computing such
  Consolidated Net Income; plus
 
    (3) depreciation, amortization (including amortization of goodwill and
  other intangibles and other non-cash expenses (excluding any such non-cash
  expense to the extent that it represents an accrual of or reserve for cash
  expenses in any future period) of such Person and its Restricted
  Subsidiaries for such period to the extent that such depreciation,
  amortization and other non-cash expenses were deducted in computing such
  Consolidated Net Income; minus
 
 
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<PAGE>
 
    (4) non-cash items increasing such Consolidated Net Income for such
  period (excluding any items that were accrued in the ordinary course of
  business), in each case on a consolidated basis and determined in
  accordance with GAAP.
 
  "Consolidated Indebtedness" means, with respect to any Person as of any date
of determination, the sum, without duplication, of:
 
    (1) the total amount of Indebtedness of such Person and its Restricted
  Subsidiaries; plus
 
    (2) the total amount of Indebtedness of any other Person, to the extent
  that such Indebtedness has been Guaranteed by the referent Person or one or
  more of its Restricted Subsidiaries; plus
 
    (3) the aggregate liquidation value of all Disqualified Stock of such
  Person and all preferred stock of Restricted Subsidiaries of such Person,
  in each case, determined on a consolidated basis in accordance with GAAP.
 
  "Consolidated Net Income" means, with respect to any Person for any period,
the aggregate of the Net Income of such Person and its Restricted Subsidiaries
for such period, on a consolidated basis, determined in accordance with GAAP;
provided that:
 
    (1) the Net Income (but not loss) of any Person other than the Company
  that is not a Restricted Subsidiary or that is accounted for by the equity
  method of accounting shall be included only to the extent of the amount of
  dividends or distributions paid in cash to the referent Person or a
  Restricted Subsidiary thereof;
 
    (2) the Net Income of any Person acquired in a pooling of interests
  transaction for any period prior to the date of such acquisition shall be
  excluded;
 
    (3) the cumulative effect of a change in accounting principles shall be
  excluded; and
 
    (4) the Net Income (but not loss) of any Unrestricted Subsidiary shall be
  excluded whether or not distributed to the Company or one of its Restricted
  Subsidiaries.
 
  "Consolidated Tangible Assets" means, with respect to the Company, the total
consolidated assets of the Company and its Restricted Subsidiaries, less the
total intangible assets of the Company and its Restricted Subsidiaries, as
shown on the most recent internal consolidated balance sheet of the Company and
such Restricted Subsidiaries calculated on a consolidated basis in accordance
with GAAP.
 
  "Continuing Directors" means, as of any date of determination, any member of
the Board of Directors of the Company who:
 
    (1) was a member of such Board of Directors on the date of the Indenture;
 
    (2) was nominated for election or elected to such Board of Directors with
  the approval of a majority of the Continuing Directors who were members of
  such Board at the time of such nomination or election; or
 
    (3) is a designee of a Principal or was nominated by a Principal.
 
  "Credit Facilities" means one or more debt facilities (including, without
limitation, the Senior Credit Facility) or commercial paper facilities with
banks or other institutional lenders providing for revolving credit loans, term
loans, receivables financing (including through the sale of receivables to such
lenders or to special purpose entities formed to borrow from such lenders
against such receivables) or letters of credit, in each case, as amended,
restated, modified, renewed, refunded, replaced or refinanced in whole or in
part from time to time.
 
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<PAGE>
 
  "Crown Transition Agreements" means collectively (i) the Crown Memorandum of
Understanding among the Company, Robert A. Crown and Barbara A. Crown, dated as
of July 2, 1998, (ii) the Crown Services Agreement between the Company and
Robert A. Crown, dated as of July 2, 1998 and (iii) the Registration Rights
Crown Side Letter Agreement, among the Company, Robert A. Crown and Barbara A.
Crown, dated as of August 18, 1998.
 
  "CTI" means Castle Transmission International Limited.
 
  "CTI Operating Agreement" means the memorandum of understanding among the
Company, CTSH, CTI and TdF, dated as of August 21, 1998, relating to the
development of certain business opportunities outside of the United States and
the provision of certain business support and technical services in connection
therewith.
 
  "CTI Services Agreement" means the amended and restated services agreement
between CTI and TdF, dated as of August 21, 1998, relating to the provisions of
certain services to CTI.
 
  "CTSH" means Castle Transmission Services (Holdings) Ltd and its successors.
 
  "CTSH Shareholders' Agreement" means the agreement entered into by the
Company, CTSH and TdF, dated as of August 21, 1998, to govern the relationship
between the Company and TdF as shareholders of CTSH.
 
  "Debt to Adjusted Consolidated Cash Flow Ratio" means, as of any date of
determination, the ratio of:
 
    (1) the Consolidated Indebtedness of the Company as of such date to
 
    (2) the sum of:
 
      (a) the Consolidated Cash Flow of the Company for the four most
    recent full fiscal quarters ending immediately prior to such date for
    which internal financial statements are available, less the Company's
    Tower Cash Flow for such four-quarter period; plus
 
      (b) the product of four times the Company's Tower Cash Flow for the
    most recent quarterly period (such sum being referred to as "Adjusted
    Consolidated Cash Flow"),
 
  in each case determined on a pro forma basis after giving effect to all
  acquisitions or dispositions of assets made by the Company and its
  Subsidiaries from the beginning of such four-quarter period through and
  including such date of determination (including any related financing
  transactions) as if such acquisitions and dispositions had occurred at the
  beginning of such four-quarter period.
 
For purposes of making the computation referred to above, (1) acquisitions that
have been made by the Company or any of its Restricted Subsidiaries, including
through mergers or consolidations and including any related financing
transactions, during the reference period or subsequent to such reference
period and on or prior to the Calculation Date shall be deemed to have occurred
on the first day of the reference period and Consolidated Cash Flow for such
reference period shall be calculated without giving effect to clause (2) of the
proviso set forth in definition of Consolidated Net Income; and (2) the
Consolidated Cash Flow attributable to discontinued operations, as determined
in accordance with GAAP, and operations or businesses disposed of prior to
Calculation Date, shall be excluded.
 
  "Default" means any event that is, or with the passage of time or the giving
of notice or both would be, an Event of Default.
 
  "Disqualified Stock" means any Capital Stock that, by its terms (or by the
terms of any security into which it is convertible or for which it is
exchangeable, in each case, at the option of the holder
 
                                      165
<PAGE>
 
thereof), or upon the happening of any event, matures or is mandatorily
redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable
at the option of the holder thereof, in whole or in part, on or prior to the
date that is 91 days after the date on which the notes mature; provided,
however, that any Capital Stock that would constitute Disqualified Stock solely
because the holders thereof have the right to require the Company to repurchase
such Capital Stock upon the occurrence of a Change of Control or an Asset Sale
shall not constitute Disqualified Stock if the terms of such Capital Stock
provide that the Company may not repurchase or redeem any such Capital Stock
pursuant to such provisions unless such repurchase or redemption complies with
the covenant described above the caption "--Certain Covenants--Restricted
Payments."
 
  "Eligible Indebtedness" means any Indebtedness other than:
 
    (1) Indebtedness in the form of, or represented by, bonds or other
  securities or any guarantee thereof; and
 
    (2) Indebtedness that is, or may be, quoted, listed or purchased and sold
  on any stock exchange, automated trading system or over-the-counter or
  other securities market (including, without prejudice to the generality of
  the foregoing, the market for securities eligible for resale pursuant to
  Rule 144A under the Securities Act).
 
  "Eligible Receivables" means the accounts receivable (net of any reserves and
allowances for doubtful accounts in accordance with GAAP) of the Company and
its Restricted Subsidiaries that are not more than 60 days past their due date
and that were entered into in the ordinary course of business on normal payment
terms as shown on the most recent internal consolidated balance sheet of the
Company and such Restricted Subsidiaries, all calculated on a consolidated
basis in accordance with GAAP.
 
  "Equity Interests" means Capital Stock and all warrants, options or other
rights to acquire Capital Stock (but excluding any debt security that is
convertible into, or exchangeable for, Capital Stock).
 
  "Existing Indebtedness" means Indebtedness of the Company and its
Subsidiaries (other than Indebtedness under the Senior Credit Facility) in
existence on the date of the Indenture, until such amounts are repaid.
 
  "Full Accretion Date" means            , 2004.
 
  "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board or in such other statements by such
other entity as have been approved by a significant segment of the accounting
profession, which are in effect on the date of the Indenture.
 
  "Guarantee" means a guarantee (other than by endorsement of negotiable
instruments for collection in the ordinary course of business), direct or
indirect, in any manner (including, without limitation, by way of a pledge of
assets or through letters of credit or reimbursement agreements in respect
thereof), of all or any part of any Indebtedness.
 
  "Governance Agreement" means the agreement among the Company, TdF and its
affiliates, dated as of August 21, 1998, to provide for certain rights and
obligations of the Company, TdF and its affiliates with respect to the
management of the Company.
 
  "Hedging Obligations" means, with respect to any Person, the obligations of
such Person under:
 
    (1) interest rate swap agreements, interest rate cap agreements and
  interest rate collar agreements; and
 
                                      166
<PAGE>
 
    (2) other agreements or arrangements designed to protect such Person
  against fluctuations in interest rates or currency exchange rates.
 
  "Indebtedness" means, with respect to any Person, any indebtedness of such
Person, whether or not contingent, in respect of borrowed money or evidenced by
bonds, notes, debentures or similar instruments or letters of credit (or
reimbursement agreements in respect thereof) or banker's acceptances or
representing Capital Lease Obligations or the balance deferred and unpaid of
the purchase price of any property or representing any Hedging Obligations,
except any such balance that constitutes an accrued expense or trade payable,
if and to the extent any of the foregoing indebtedness (other than letters of
credit and Hedging Obligations) would appear as a liability upon a balance
sheet of such Person prepared in accordance with GAAP, as well as all
Indebtedness of others secured by a Lien on any asset of such Person whether or
not such Indebtedness is assumed by such Person (the amount of such
Indebtedness as of any date being deemed to be the lesser of the value of such
property or assets as of such date or the principal amount of such Indebtedness
of such other Person so secured) and, to the extent not otherwise included, the
Guarantee by such Person of any Indebtedness of any other Person. The amount of
any Indebtedness outstanding as of any date shall be:
 
    (1) the accreted value thereof, in the case of any Indebtedness issued
  with original issue discount; and
 
    (2) the principal amount thereof, together with any interest thereon that
  is more than 30 days past due, in the case of any other Indebtedness.
 
  "Investments" means, with respect to any Person, all investments by such
Person in other Persons (including Affiliates) in the forms of direct or
indirect loans (including guarantees of Indebtedness or other obligations),
advances or capital contributions (excluding commission, travel and similar
advances to officers and employees made in the ordinary course of business),
purchases or other acquisitions for consideration of Indebtedness, Equity
Interests or other securities, together with all items that are or would be
classified as investments on a balance sheet prepared in accordance with GAAP.
If the Company or any Restricted Subsidiary of the Company sells or otherwise
disposes of any Equity Interests of any direct or indirect Subsidiary of the
Company or a Restricted Subsidiary of the Company issues any of its Equity
Interests such that, in each case, after giving effect to any such sale or
disposition, such Person is no longer a Restricted Subsidiary of the Company,
the Company shall be deemed to have made an Investment on the date of any such
sale or disposition equal to the fair market value of the Equity Interests of
such Subsidiary not sold or disposed of in an amount determined as provided in
the final paragraph of the covenant described above under the caption "--
Certain Covenants--Restricted Payments."
 
  "IPO Date" means, August 18, 1998, the date of the Company's initial public
offering of common stock.
 
  "Lien" means, with respect to any asset, any mortgage, lien, pledge, charge,
security interest or encumbrance of any kind in respect of such asset, whether
or not filed, recorded or otherwise perfected under applicable law (including
any conditional sale or other title retention agreement, any lease in the
nature thereof, any option or other agreement to sell or give a security
interest in and any filing of or agreement to give any financing statement
under the Uniform Commercial Code (or equivalent statutes) of any
jurisdiction).
 
  "Nassau Group" means Nassau Capital Partners II, L.P. and NAS Partners I,
L.L.C.
 
    "Net Income" means, with respect to any Person, the net income (loss) of
such Person, determined in accordance with GAAP and before any reduction in
respect of preferred stock dividends, excluding, however:
 
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<PAGE>
 
    (1) any gain or loss, together with any related provision for taxes on
  such gain or loss, realized in connection with:
 
       (a) any Asset Sale (including, without limitation, dispositions
     pursuant to sale and leaseback transactions); or
 
       (b) the disposition of any securities by such Person or any of its
     Restricted Subsidiaries or the extinguishment of any Indebtedness of
     such Person or any of its Restricted Subsidiaries; and
 
    (2) any extraordinary gain or loss, together with any related provision
  for taxes on such extraordinary gain or loss.
 
    "Net Proceeds" means the aggregate cash proceeds received by the Company or
any of its Restricted Subsidiaries in respect of any Asset Sale (including,
without limitation, any cash received upon the sale or other disposition of any
non-cash consideration received in any Asset Sale), net of:
 
    (1) the direct costs relating to such Asset Sale (including, without
  limitation, legal, accounting and investment banking fees, and sales
  commissions) and any relocation expenses incurred as a result thereof;
 
    (2) taxes paid or payable as a result thereof (after taking into account
  any available tax credits or deductions and any tax sharing arrangements);
 
    (3) amounts required to be applied to the repayment of Indebtedness
  (other than Indebtedness under a Credit Facility) secured by a Lien on the
  asset or assets that were the subject of such Asset Sale;
 
    (4) all distributions and other payments required to be made to minority
  interest holders in Restricted Subsidiaries as a result of such Asset
  Sale;
 
    (5) the deduction of appropriate amounts provided by the seller as a
  reserve in accordance with GAAP against any liabilities associated with
  the assets disposed of in such Asset Sale and retained by the Company or
  any Restricted Subsidiary after such Asset Sale; and
 
    (6) without duplication, any reserves that the Company's Board of
  Directors determines in good faith should be made in respect of the sale
  price of such asset or assets for post closing adjustments;
 
provided that in the case of any reversal of any reserve referred to in clause
(5) or (6) above, the amount so reversed shall be deemed to be Net Proceeds
from an Asset Sale as of the date of such reversal.
 
    "Non-Recourse Debt" means Indebtedness:
 
    (1) as to which neither the Company nor any of its Restricted
  Subsidiaries:
 
       (a) provides credit support of any kind (including any undertaking,
     agreement or instrument that would constitute Indebtedness);
 
       (b) is directly or indirectly liable (as a guarantor or otherwise);
     or
 
       (c) constitutes the lender;
 
    (2) no default with respect to which (including any rights that the
  holders thereof may have to take enforcement action against an
  Unrestricted Subsidiary) would permit (upon notice, lapse of time or both)
  any holder of any other Indebtedness of the Company or any of its
  Restricted
 
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<PAGE>
 
  Subsidiaries to declare a default on such other Indebtedness or cause the
  payment thereof to be accelerated or payable prior to its stated maturity;
  and
 
    (3) as to which the lenders have been notified in writing that they will
  not have any recourse to the stock or assets of the Company or any of its
  Restricted Subsidiaries (except that this clause (3) will not apply to any
  Indebtedness incurred by CTSH and its Subsidiaries prior to the date CTSH
  becomes a Subsidiary).
 
    "Obligations" means any principal, interest, penalties, fees,
indemnifications, reimbursements, damages and other liabilities payable under
the documentation governing any Indebtedness.
 
    "Permitted Business" means any business conducted by the Company, its
Restricted Subsidiaries or CTSH and its Subsidiaries on the date of the
Indenture and any other business related, ancillary or complementary to any
such business.
 
    "Permitted Investments" means:
 
    (1) any Investment in the Company or in a Restricted Subsidiary of the
  Company;
 
    (2) any Investment in Cash Equivalents;
 
    (3) any Investment by the Company or any Restricted Subsidiary of the
  Company in a Person, if as a result of such Investment:
 
       (a) such Person becomes a Restricted Subsidiary of the Company; or
 
       (b) such Person is merged, consolidated or amalgamated with or into,
     or transfers or conveys substantially all of its assets to, or is
     liquidated into, the Company or a Restricted Subsidiary of the
     Company;
 
    (4) any Restricted Investment made as a result of the receipt of non-
  cash consideration from an Asset Sale that was made pursuant to and in
  compliance with the covenant described above under the caption "--
  Repurchase at the Option of Holders--Asset Sales";
 
    (5) any acquisition of assets solely in exchange for the issuance of
  Equity Interests (other than Disqualified Stock) of the Company;
 
    (6) receivables created in the ordinary course of business;
 
    (7) loans or advances to employees made in the ordinary course of
  business not to exceed $1.0 million at any one time outstanding;
 
    (8) securities and other assets received in settlement of trade debts or
  other claims arising in the ordinary course of business;
 
    (9) purchases of additional Equity Interests in CTSH for cash pursuant
  to the Shareholders' Agreement as the same is in effect on the date of the
  Indenture for aggregate cash consideration not to exceed $20.0 million
  since the date of the Indenture; and
 
    (10) purchases of additional Equity Interests in CTSH for cash pursuant
  to the Governance Agreement as the same is in effect on the Loan Date for
  aggregate cash consideration not to exceed $20.0 million since the Loan
  Date;
 
    (11) the Investment of up to an aggregate of $100.0 million (i) to be
  used to consummate the formation of the Crown Atlantic Holding Company LLC
  joint venture with BAM or (ii) if the Company does not consummate the
  formation of the Crown Atlantic Holding Company LLC joint venture with
  BAM, in one or more other Subsidiaries of the Company (which may be
  Unrestricted Subsidiaries of the Company), each of which derives or
  expects to derive a majority of its revenues from one or more Permitted
  Businesses (each such Investment being measured as of the date made and
  without giving effect to subsequent changes in value);
 
                                      169
<PAGE>
 
    (12) additional Investments in an aggregate amount equal to (x) $200.0
  million, minus (y) the aggregate amount of Investments made or permitted
  to be made pursuant to clause (11) of this paragraph, minus (z) the
  aggregate amount of Indebtedness incurred and/or Disqualified Stock issued
  pursuant to clause (11) of the second paragraph of Section 4.09 hereof
  (each such Investment being measured as of the date made and without
  giving effect to subsequent changes in value); and
 
    (13) other Investments in Permitted Businesses not to exceed an amount
  equal to $10.0 million plus 10% of the Company's Consolidated Tangible
  Assets at any one time outstanding (each such Investment being measured as
  of the date made and without giving effect to subsequent changes in
  value).
 
    "Permitted Liens" means:
 
    (1) Liens securing Eligible Indebtedness of the Company under one or
  more Credit Facilities that was permitted by the terms of the Indenture to
  be incurred;
 
    (2) Liens securing any Indebtedness of any of the Company's Restricted
  Subsidiaries that was permitted by the terms of the Indenture to be
  incurred;
 
    (3) Liens in favor of the Company;
 
    (4) Liens existing on the date of the Indenture;
 
    (5) Liens for taxes, assessments or governmental charges or claims that
  are not yet delinquent or that are being contested in good faith by
  appropriate proceedings promptly instituted and diligently concluded,
  provided that any reserve or other appropriate provision as shall be
  required in conformity with GAAP shall have been made therefor;
 
    (6) Liens securing Indebtedness permitted to be incurred under clause
  (4) of the second paragraph of the covenant described above under the
  caption "--Certain Covenants--Incurrence of Indebtedness and Issuance of
  Preferred Stock"; and
 
    (7) Liens incurred in the ordinary course of business of the Company or
  any Restricted Subsidiary of the Company with respect to obligations that
  do not exceed $5.0 million at any one time outstanding and that:
 
       (a) are not incurred in connection with the borrowing of money or
     the obtaining of advances or credit (other than trade credit in the
     ordinary course of business); and
 
       (b) do not in the aggregate materially detract from the value of the
     property or materially impair the use thereof in the operation of
     business by the Company or such Restricted Subsidiary.
 
    "Permitted Refinancing Indebtedness" means any Indebtedness of the Company
or any of its Restricted Subsidiaries issued in exchange for, or the net
proceeds of which are used to extend, refinance, renew, replace, defease or
refund other Indebtedness of the Company or any of its Restricted Subsidiaries
(other than intercompany Indebtedness); provided that:
 
    (1) the principal amount (or initial accreted value, if applicable) of
  such Permitted Refinancing Indebtedness does not exceed the principal
  amount of (or accreted value, if applicable), plus accrued interest on,
  the Indebtedness so extended, refinanced, renewed, replaced, defeased or
  refunded (plus the amount of expenses and prepayment premiums incurred in
  connection therewith);
 
    (2) such Permitted Refinancing Indebtedness has a final maturity date
  later than the final maturity date of, and has a Weighted Average Life to
  Maturity equal to or greater than the Weighted Average Life to Maturity
  of, the Indebtedness being extended, refinanced, renewed, replaced,
  defeased or refunded;
 
                                      170
<PAGE>
 
    (3) if the Indebtedness being extended, refinanced, renewed, replaced,
  defeased or refunded is subordinated in right of payment to the notes,
  such Permitted Refinancing Indebtedness is subordinated in right of
  payment to, the notes on terms at least as favorable to the holders of
  notes as those contained in the documentation governing the Indebtedness
  being extended, refinanced, renewed, replaced, defeased or refunded; and
 
    (4) such Indebtedness is incurred either by the Company or by the
  Restricted Subsidiary who is the obligor on the Indebtedness being
  extended, refinanced, renewed, replaced, defeased or refunded.
 
    "Person" means any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization or
government or agency or political subdivision thereof (including any
subdivision or ongoing business of any such entity or substantially all of the
assets of any such entity, subdivision or business).
 
    "Principals" means Berkshire Group, Centennial Group, Nassau Group, TdF and
any Related Party of the foregoing.
 
    "Prospectus" means the prospectus included in a Registration Statement at
the time such Registration Statement is declared effective, as amended or
supplemented by any prospectus supplement and by all other amendments thereto,
including post-effective amendments, and all material incorporated by reference
into that prospectus.
 
    "Public Equity Offering" means an underwritten primary public offering of
common stock of the Company pursuant to an effective registration statement
under the Securities Act.
 
    "Related Party" with respect to any Principal means:
 
  (1) any controlling stockholder, 80% (or more) owned Subsidiary of such
     Principal; or
 
  (2) any trust, corporation, partnership or other entity, the beneficiaries,
     stockholders, members, partners, owners or Persons beneficially holding
     an 80% or more controlling interest of which consist of such Principal
     and/or such other Persons referred to in the immediately preceding
     clause (1).
 
    "Restricted Investment" means an Investment other than a Permitted
Investment.
 
    "Restricted Subsidiary" of a Person means any Subsidiary of the referent
Person that is not an Unrestricted Subsidiary.
 
    "Roll-Up" means the transaction pursuant to which CTSH becomes a Subsidiary
of the Company.
 
    "Senior Credit Facility" means that certain Amended and Restated Loan
Agreement, dated as of July 10, 1998, by and among Key Corporate Capital Inc.
and PNC Bank, National Association, as arrangers and agents for the financial
institutions listed therein, and Crown Communication Inc. and Crown Castle
International Corp. de Puerto Rico, including any related notes, guarantees,
collateral documents, instruments and agreements executed in connection
therewith, and in each case as amended, modified, renewed, refunded, replaced
or refinanced from time to time.
 
    "Senior Subordinated Exchange Debentures" means the Company's 12% Senior
Subordinated Exchange Debentures due 2010 issuable by the Company upon exchange
for the Company's 12% Senior Exchangeable Preferred Stock due 2010, together
with any and all additional 12% Senior Subordinated Exchange Debentures due
2010 of the Company issued (i) as payment of interest in accordance with the
provisions under the indenture governing such Indebtedness and (ii) in
 
                                      171
<PAGE>
 
connection with a transfer or exchange of debentures evidencing such
Indebtedness pursuant to an effective registration statement filed with the
Commission.
 
    "Significant Subsidiary" means, with respect to any Person, any Restricted
Subsidiary of such Person that would be a "significant subsidiary" of such
Person as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated
pursuant to the Act, as such Regulation is in effect on the date hereof, except
that all references to "10 percent" in Rule 1-02(w)(1), (2) and (3) shall mean
"5 percent" and that all Unrestricted Subsidiaries of the Company shall be
excluded from all calculations under Rule 1-02(w).
 
    "Stated Maturity" means, with respect to any installment of interest or
principal on any series of Indebtedness, the date on which such payment of
interest or principal was scheduled to be paid in the original documentation
governing such Indebtedness, and shall not include any contingent obligations
to repay, redeem or repurchase any such interest or principal prior to the date
originally scheduled for the payment thereof.
 
    "Stockholders' Agreement" means the agreement among the Company and certain
stockholders of the Company, dated as of August 21, 1998, to provide for
certain rights and obligations of the Company and such stockholders with
respect to the governance of the Company and such stockholders' shares of
Common Stock and/or Class A Common Stock of the Company.
 
    "Strategic Equity Investment" means a cash contribution to the common
equity capital of the Company or a purchase from the Company of common Equity
Interests (other than Disqualified Stock), in either case by or from a
Strategic Equity Investor and for aggregate cash consideration of at least
$50.0 million.
 
    "Strategic Equity Investor" means a Person engaged in a Permitted Business
whose Total Equity Market Capitalization exceeds $1.0 billion.
 
    "Subsidiary" means, with respect to any Person:
 
  (1) any corporation, association or other business entity of which more
     than 50% of the total voting power of shares of Capital Stock entitled
     (without regard to the occurrence of any contingency) to vote in the
     election of directors, managers or trustees thereof is at the time owned
     or controlled, directly or indirectly, by such Person or one or more of
     the other Subsidiaries of that Person (or a combination thereof); and
 
  (2) any partnership:
 
    (a) the sole general partner or the managing general partner of which
       is such Person or a Subsidiary of such Person; or
 
    (b) the only general partners of which are such Person or of one or
       more Subsidiaries of such Person (or any combination thereof).
 
    "TdF" means TeleDiffusion de France International S.A.
 
    "Total Equity Market Capitalization" of any Person means, as of any day of
determination, the sum of:
 
  (1) the product of:
 
    (a) the aggregate number of outstanding primary shares of common stock
       of such Person on such day (which shall not include any options or
       warrants on, or securities convertible or exchangeable into, shares
       of common stock of such person); multiplied by
 
 
                                      172
<PAGE>
 
    (b) the average closing price of such common stock listed on a national
       securities exchange or the Nasdaq National Market System over the 20
       consecutive business days immediately preceding such day; plus
 
  (2) the liquidation value of any outstanding shares of preferred stock of
     such Person on such day.
 
    "Tower Asset Exchange" means any transaction in which the Company or one of
its Restricted Subsidiaries exchanges assets for Tower Assets and/or cash or
Cash Equivalents where the fair market value (evidenced by a resolution of the
Board of Directors set forth in an Officers' Certificate delivered to the
trustee) of the Tower Assets and cash or Cash Equivalents received by the
Company and its Restricted Subsidiaries in such exchange is at least equal to
the fair market value of the assets disposed of in such exchange.
 
    "Tower Assets" means wireless transmission towers and related assets that
are located on the site of a transmission tower.
 
    "Tower Cash Flow" means, for any period, the Consolidated Cash Flow of the
Company and its Restricted Subsidiaries for such period that is directly
attributable to site rental revenue or license fees paid to lease or sublease
space on communication sites owned or leased by the Company, all determined on
a consolidated basis and in accordance with GAAP. Tower Cash Flow will not
include revenue or expenses attributable to non-site rental services provided
by the Company or any of its Restricted Subsidiaries to lessees of
communication sites or revenues derived from the sale of assets.
 
    "Unrestricted Subsidiary" means any Subsidiary of the Company that is
designated by the Board of Directors as an Unrestricted Subsidiary pursuant to
a Board Resolution; but only to the extent that such Subsidiary:
 
  (1) has no Indebtedness other than Non-Recourse Debt;
 
  (2) is not party to any agreement, contract, arrangement or understanding
     with the Company or any Restricted Subsidiary of the Company unless the
     terms of any such agreement, contract, arrangement or understanding are
     no less favorable to the Company or such Restricted Subsidiary than
     those that might be obtained at the time from Persons who are not
     Affiliates of the Company;
 
  (3) is a Person with respect to which neither the Company nor any of its
     Restricted Subsidiaries has any direct or indirect obligation:
 
    (a) to subscribe for additional Equity Interests; or
 
    (b) to maintain or preserve such Person's financial condition or to
       cause such Person to achieve any specified levels of operating
       results;
 
  (4) has not guaranteed or otherwise directly or indirectly provided credit
     support for any Indebtedness of the Company or any of its Restricted
     Subsidiaries; and
 
  (5) has at least one director on its board of directors that is not a
     director or executive officer of the Company or any of its Restricted
     Subsidiaries and has at least one executive officer that is not a
     director or executive officer of the Company or any of its Restricted
     Subsidiaries.
 
    Any such designation by the Board of Directors shall be evidenced to the
trustee by filing with the trustee a certified copy of the Board Resolution
giving effect to such designation and an Officers' Certificate certifying that
such designation complied with the foregoing conditions and was permitted by
the covenant described above under the caption "--Certain Covenants--Restricted
Payments." If, at any time, any Unrestricted Subsidiary would fail to meet the
foregoing requirements as an
 
                                      173
<PAGE>
 
Unrestricted Subsidiary, it shall thereafter cease to be an Unrestricted
Subsidiary for purposes of the Indenture and any Indebtedness of such
Subsidiary shall be deemed to be incurred by a Restricted Subsidiary of the
Company as of such date (and, if such Indebtedness is not permitted to be
incurred as of such date under the covenant described above under the caption
"--Certain Covenants--Incurrence of Indebtedness and Issuance of Preferred
Stock," the Company shall be in default of such covenant). The Board of
Directors of the Company may at any time designate any Unrestricted Subsidiary
to be a Restricted Subsidiary; provided that such designation shall be deemed
to be an incurrence of Indebtedness by a Restricted Subsidiary of the Company
of any outstanding Indebtedness of such Unrestricted Subsidiary and such
designation shall only be permitted if (1) such Indebtedness is permitted under
the covenant described above under the caption "--Certain Covenants--Incurrence
of Indebtedness and Issuance of Preferred Stock," calculated on a pro forma
basis as if such designation had occurred at the beginning of the four-quarter
reference period and (2) no Default would occur or be in existence following
such designation.
 
    "Voting Stock" of any Person as of any date means the Capital Stock of such
Person that is at the time entitled to vote in the election of the Board of
Directors of such Person.
 
    "Weighted Average Life to Maturity" means, when applied to any Indebtedness
at any date, the number of years obtained by dividing:
 
  (1) the sum of the products obtained by multiplying :
 
    (a) the amount of each then remaining installment, sinking fund, serial
       maturity or other required payments of principal, including payment
       at final maturity, in respect thereof; by
 
    (b) the number of years (calculated to the nearest one-twelfth) that
       will elapse between such date and the making of such payment; by
 
  (2) the then outstanding principal amount of such Indebtedness.
 
    "Wholly Owned Restricted Subsidiary" of any Person means a Restricted
Subsidiary of such Person all of the outstanding Capital Stock or other
ownership interests of which (other than directors' qualifying shares) shall at
the time be owned by such Person or by one or more Wholly Owned Restricted
Subsidiaries of such Person and one or more Wholly Owned Restricted
Subsidiaries of such Person.
 
                                      174
<PAGE>
 
                      [E] SHARES ELIGIBLE FOR FUTURE SALE
 
    Upon completion of the offering, we will have outstanding    shares of
common stock (   shares if the over-allotment option is exercised in full). Of
these shares, the    shares of common stock (   if the over-allotment option is
exercised in full) sold in the offering will be freely tradeable without
restriction or further registration under the Securities Act, unless held by an
"affiliate" of the Company as that term is defined in Rule 144 promulgated
under the Securities Act ("Rule 144"), which shares will be subject to the
resale limitation of Rule 144. The remaining    shares of common stock (   if
the over-allotment option is exercised in full) have not been registered under
the Securities Act and may not be sold unless they are registered or unless an
exemption from registration, such as the exemption provided by Rule 144, is
available. As a result of the contractual restrictions described below and the
provisions of Rule 144, approximately    shares will be eligible for sale upon
expiration of the lock-up agreements 90 days after the date of this prospectus
and approximately    shares will be eligible for sale upon expiration of their
respective one-year holding periods.
 
    We have agreed, during the period beginning from the date of this
prospectus and continuing to and including the date 90 days after the date of
this prospectus, not to offer, sell, contract to sell or otherwise dispose of
any of our securities that are substantially similar to the common stock,
including but not limited to any securities that are convertible into or
exchangeable for, or that represent the right to receive, common stock or any
such substantially similar securities, without the prior written consent of
Goldman Sachs & Co. In addition, the selling stockholders, our directors,
executive officers and certain other officers, who represent in the aggregate
approximately   % of the outstanding common stock after the offering (assuming
no exercise of the underwriters' over-allotment option), will be required,
during the period beginning from the date of this prospectus and continuing to
and including the date 90 days after the date of this prospectus, not to,
directly or indirectly, offer, pledge, sell, contract to sell or otherwise
dispose of any of our securities outstanding as of the date of this prospectus,
including but not limited to any securities that are convertible into or
exchangeable for, or that represent the right to receive any common stock or
substantially similar securities, or enter into any swap or other arrangement
that transfers, in whole or in part, the economic consequences of ownership of
any of our securities, without the prior written consent of Goldman Sachs & Co.
See "Underwriting".
 
    In general, under Rule 144 as currently in effect, a stockholder, including
an "affiliate", who has beneficially owned his or her restricted securities (as
that term is defined in Rule 144) for at least one year from the later of the
date such securities were acquired from us or (if applicable) the date they
were acquired from an affiliate, is entitled to sell, within any three-month
period, a number of such shares that does not exceed the greater of 1% of the
then outstanding shares of common stock (which will equal approximately
shares immediately after the offering) or the average weekly trading volume in
the common stock during the four calendar weeks preceding the date on which
notice of such sale was filed under Rule 144, provided certain requirements
concerning availability of public information, manner of sale and notice of
sale are satisfied. In addition, under Rule 144(k), if a period of at least two
years has elapsed between the later of the date restricted securities were
acquired from us or (if applicable) the date they were acquired from an
affiliate of ours, a stockholder who is not an affiliate of ours at the time of
sale and has not been an affiliate of ours for at least three months prior to
the sale is entitled to sell the shares immediately without compliance with the
foregoing requirements under Rule 144.
   
    Approximately    shares of common stock (approximately    including shares
issuable upon conversion or exercise of outstanding securities) will be subject
to demand and piggyback registration rights. In addition, we estimate that upon
the expiration of the 90-day lockup period described above, approximately
shares may be sold under Rule 144, subject to the volume restrictions contained
therein.     
 
                                      175
<PAGE>
 
   
    Except as indicated above, we are unable to estimate the amount, timing and
nature of future sales of outstanding common stock. No prediction can be made
as to the effect, if any, that market sales of shares of common stock or the
availability of shares for sale will have on the market price of the common
stock prevailing from time to time. Nevertheless, sales of significant numbers
of shares of common stock in the public market could adversely affect the
market price of the common stock and could impair the Company's ability to
raise capital through an offering of its equity securities. See "Risk Factors--
[E] Shares of a Substantial Number of Shares of Common Stock After the Equity
Offering Could Adversely Affect the Market Price of the Common Stock" and "[E]
Underwriting."     
 
                                      176
<PAGE>
 
               [D] CERTAIN U.S. FEDERAL INCOME TAX CONSIDERATIONS
   
    The following general discussion summarizes certain of the material U.S.
federal income and estate tax aspects of the purchase, ownership and
disposition of the notes. This discussion is a summary for general information
only and does not consider all aspects of U.S. federal income tax that may be
relevant to the purchase, ownership and disposition of the notes by a
prospective investor in light of such investor's personal circumstances. This
discussion also does not address the U.S. federal income tax consequences of
ownership of notes not held as capital assets within the meaning of Section
1221 of the Internal Revenue Code of 1986, as amended, or the U.S. federal
income tax consequences to investors subject to special treatment under the
U.S. federal income tax laws, such as dealers in securities or foreign
currency, tax-exempt entities, banks, thrifts, insurance companies, persons
that hold the notes as part of a "straddle," a "hedge" against currency risk or
a "conversion transaction," persons that have a "functional currency" other
than the U.S. dollar, and investors in pass-through entities. In addition, this
discussion is limited to the U.S. federal income tax consequences to initial
holders that purchase the notes for cash at their issue price (as defined
below) pursuant to the offer. It does not describe any tax consequences arising
out of the tax laws of any state, local or foreign jurisdiction.     
   
    This discussion is based upon the Code, regulations of the Treasury
Department, Internal Revenue Service ("IRS") rulings and pronouncements and
judicial decisions now in effect, all of which are subject to a change
(possibly on a retroactive basis). We have not and will not seek any rulings or
opinions from the IRS or counsel with respect to the matters discussed below.
There can be no assurance that the IRS will not take positions concerning the
tax consequences of the purchase, ownership or disposition of the notes which
are different from those discussed herein.     
 
    Persons considering the purchase of notes should consult their own advisors
concerning the application of U.S. federal income tax laws, as well as the laws
of any state, local or foreign taxing jurisdiction, to their particular
situations.
 
U.S. Holders
   
    The following discussion is limited to the U.S. federal income tax
consequences relevant to a "U.S. holder," which means a beneficial owner of a
note that is;     
     
  (1) a citizen or resident of the United States,     
     
  (2) a corporation or other entity taxable as a corporation created or
      organized under the laws of the United States or any political
      subdivision thereof or therein,     
     
  (3) an estate the income of which is subject to U.S. federal income
      taxation regardless of its sources,     
     
  (4) a trust if a U.S. court is able to exercise primary jurisdiction over
      administration of the trust and one or more U.S. persons have
      authority to control all substantial decisions of the trust or     
     
  (5) otherwise subject to U.S. federal income taxation with respect to its
      worldwide income on a net income basis. Certain U.S. federal income
      tax consequences relevant to a holder other than a U.S. holder are
      discussed separately below.     
 
Interest and Original Issue Discount
   
    The notes will be issued with original issue discount ("OID"). OID is the
excess of (1) the stated redemption price at maturity of a note over (2) its
issue price.     
 
    The "stated redemption price at maturity" of a note is the sum of all
payments provided by the instrument. The "issue price" of a note is the first
price at which a substantial amount of the notes are sold to the public for
cash (excluding sales to bond houses, brokers or similar persons or
organizations acting in the capacity as underwriters, placement agents or
wholesalers).
 
 
                                      177
<PAGE>
 
   
    A U.S. holder is required to include OID in income as ordinary interest as
it accrues under a constant yield method in advance of receipt of the cash
payments attributable to such income, regardless of such U.S. Holder's regular
method of accounting. A U.S. holder will not be required to report separately
as taxable income actual distributions of stated interest with respect to the
notes. In general, the amount of OID included in income by the holder of a note
is the sum of the daily portions of OID for each day during the taxable year
(or portion of the taxable year) on which such holder held such note. The
"daily portion" is determined by allocating the OID for an accrual period
ratably to each day in that accrual period. The "accrual period" for a note may
be of any length and may vary in length over the term of a note, provided that
each accrual period is no longer than one year and each scheduled payment of
principal or interest occurs either on the first or final day of an accrual
period.     
   
    The amount of OID for an accrual period is generally equal to the product
of the note's adjusted issue price at the beginning of such accrual period and
its yield to maturity. The "adjusted issue price" of a note at the beginning of
any accrual period is the sum of the issue price of the note plus the amount of
OID allocable to all prior accrual periods minus the amount of any prior
payments on the note. Under the constant yield method of determining OID, a
U.S. holder generally will have to include in income increasingly greater
amounts of OID in successive accrual periods.     
 
Applicable High Yield Discount Obligation
   
    The OID on any obligation that constitutes an "applicable high yield
discount obligation" is not deductible until paid. An "applicable high yield
discount obligation" is any debt instrument that:     
     
  (1) has a maturity date which is more than five years from the date of
      issue,     
     
  (2) has a yield to maturity which equals or exceeds the applicable Federal
      rate (as set forth in Section 1274(d) of the Code) for the calendar
      month in which the obligation is issued plus five percentage points and
             
  (3) has "significant original issue discount." The applicable Federal rate
      is an interest rate, announced monthly by the IRS, that is based on the
      yield of debt obligations issued by the U.S. Treasury, which applicable
      Federal rate is 5.23% for March, 1999. A debt instrument generally has
      "significant original issue discount" if, as of the close of any
      accrual period ending more than five years after the date of issue, the
      excess of the interest (including OID) that has accrued on the
      obligation over the interest (including OID) that is required to be
      paid thereunder exceeds the product of the issue price of the
      instrument and its yield to maturity. Moreover, if the debt
      instrument's yield to maturity exceeds the applicable Federal rate plus
      six percentage points, a ratable portion of the issuing corporation's
      deduction for OID (the "Disqualified OID") (based on the portion of the
      yield to maturity that exceeds the applicable Federal rate plus six
      percentage points) will be denied. The Disqualified OID will be treated
      as a dividend generally eligible for the dividends-received deduction
      in the case of corporate holders to the extent it would have been so
      treated had such amount been distributed by the issuing corporation
      with respect to its stock.     
 
Sale, Exchange or Redemption of the Notes
   
    Upon the sale, exchange, retirement or other disposition of a note, a U.S.
holder will generally recognize taxable capital gain or loss equal to the
difference between (1) the amount realized on the disposition (except to the
extent that amounts received are attributable to accrued interest, which
portion of the consideration would be taxed as ordinary income if the interest
was previously untaxed) and (2) the U.S. holder's adjusted tax basis in the
note. A U.S. holder's adjusted tax basis in a note generally will equal the
cost of the note to the U.S. holder increased by any OID included in income
through the date of disposition and decreased by any payments received on the
notes. In the case of a U.S. holder who is an individual, such capital gain
will be subject to tax at a maximum rate of 20% if the note has been held for
more than 12 months at the time of the sale, exchange, retirement or other
disposition.     
 
 
                                      178
<PAGE>
 
   
    A U.S. holder will not recognize any taxable gain or loss on the exchange
of notes for new notes pursuant to the exchange offer.     
 
Information Reporting and Backup Withholding
   
    U.S. Holders of notes may be subject, under certain circumstances, to
information reporting and "backup withholding" at a 31% rate with respect to
cash payments in respect of principal (and premium, if any), interest
(including OID) and the gross proceeds from dispositions of notes. Backup
withholding applies only if the U.S. holder:     
     
  (1) fails to furnish its social security or other taxpayer identification
      number ("TIN") within a reasonable time after a request therefor,     
     
  (2) furnishes an incorrect TIN,     
     
  (3) fails to report properly interest or dividends, or     
     
  (4) fails, under certain circumstances, to provide a certified statement,
      signed under penalty of perjury, that the TIN provided is its correct
      number and that it is not subject to backup withholding. Any amount
      withheld from a payment to a U.S. holder under the backup withholding
      rules is allowable as a credit (and may entitle such holder to a
      refund) against such U.S. holder's U.S. federal income tax liability,
      provided that the required information is furnished to the IRS.
      Certain persons are exempt from backup withholding, including
      corporations and financial institutions. U.S. holders of notes should
      consult their tax advisors as to their qualification for exemption
      from backup withholding and the procedure for obtaining such
      exemption.     
   
    We will furnish annually to the IRS and to record holders of the notes (to
whom it is required to furnish such information) information relating to the
amount of OID and interest, as applicable.     
 
Non-U.S. Holders
   
    The following discussion is limited to the U.S. federal income tax
consequences relevant to a holder of a note that is not a U.S. holder.     
   
    Subject to the discussion of backup withholding below, payments of interest
(including OID) on a note to any non-U.S. holder will generally not be subject
to U.S. federal income or withholding tax, provided that:     
 
  (1) the holder is not
        
     (a) an actual or constructive owner of 10% or more of the total voting
         power of all our voting stock or     
        
     (b) a controlled foreign corporation related (directly or indirectly)
         to us through stock ownership or     
        
     (c) a foreign tax-exempt organization or a foreign private foundation
         for U.S. federal income tax purposes,     
     
  (2) such interest payments are not effectively connected with the conduct
      by the non-U.S. holder of a trade or business within the United States
      and     
     
  (3) we or our paying agent receives     
        
     (a) from the non-U.S. holder, a properly completed Form W-8 (or
         substitute Form W-8) under penalties of perjury which provides the
         non-U.S. holder's name and address and certifies that the non-U.S.
         holder of the note is a Non-U.S. holder or     
 
                                      179
<PAGE>
 
        
     (b) from a security clearing organization, bank or other financial
         institution that holds the notes in the ordinary course of its
         trade or business (a "financial institution") on behalf of the
         non-U.S. holder, certification under penalties of perjury that
         such a Form W-8 (or substitute Form W-8) has been received by it,
         or by another such financial institution, from the non-U.S.
         holder, and a copy of the Form W-8 (or substitute Form W-8) is
         furnished to the payor.     
   
    A non-U.S. holder that does not qualify for exemption from withholding
under the preceding paragraph generally will be subject to withholding of U.S.
federal income tax at the rate of 30% (or lower applicable treaty rate) on
payments of interest (including OID) on the notes.     
   
    If the payments of interest (including OID) on a note are effectively
connected with the conduct by a non-U.S. holder of a trade or business in the
United States, such payments will be subject to U.S. federal income tax on a
net basis at the rates applicable to U.S. persons generally (and, with respect
to corporate holders, may also be subject to a 30% branch profits tax). If
payments are subject to U.S. federal income tax on a net basis in accordance
with the rules described in the preceding sentence, such payments will not be
subject to U.S. withholding tax so long as the holder provides us or its paying
agent with a properly executed Form 4224.     
   
    Non-U.S. holders should consult any applicable income tax treaties, which
may provide for a lower rate of withholding tax, exemption from or reduction of
branch profits tax, or other rules different from those described above.     
 
Sale, Exchange or Redemption of Notes
   
    Subject to the discussion concerning backup withholding, any gain realized
by a non-U.S. holder on the sale, exchange, retirement or other disposition of
a note generally will not be subject to U.S. federal income tax, unless:     
     
  (1) such gain is effectively connected with the conduct by such non-U.S.
      holder of a trade or business within the United States,     
     
  (2) the non-U.S. holder is an individual who is present in the United
      States for 183 days or more in the taxable year of the disposition and
      certain other conditions are satisfied or     
     
  (3) the non-U.S. holder is subject to tax pursuant to the provisions of
      U.S. federal tax law applicable to certain U.S. expatriates.     
 
Federal Estate Tax
   
    Notes held (or treated as held) by an individual who is a non-U.S. holder
at the time of his or her death will not be subject to U.S. federal estate tax
provided that (1) the individual does not actually or constructively own 10% or
more of the total voting power of all our voting stock and (2) income on the
note was not effectively connected with the conduct by such non-U.S. holder of
a trade or business within the United States.     
 
Information Reporting and Backup Withholding
   
    We must report annually to the IRS and to each non-U.S. holder any interest
(including OID) that is subject to withholding or that is exempt from U.S.
withholding tax. Copies of those information returns may also be made
available, under the provisions of a specific treaty or agreement, to the tax
authorities of the country in which the non-U.S. holder resides.     
   
    The regulations provide that backup withholding (which generally is a
withholding tax imposed at the rate of 31% on payments to persons that fail to
furnish certain required information) and information reporting will not apply
to payments made in respect of the notes by us to a non-U.S.     
 
                                      180
<PAGE>
 
   
holder, if the holder certifies as to its non-U.S. status under penalties of
perjury or otherwise establishes an exemption (provided that neither we nor our
paying agent has actual knowledge that the holder is a U.S. person or that the
conditions of any other exemption are not, in fact, satisfied).     
   
    The payment of the proceeds from the disposition of notes to or through the
U.S. office of any broker, U.S. or foreign, will be subject to information
reporting and possible backup withholding unless the owner certifies as to its
non-U.S. status under penalty of perjury or otherwise establishes an exemption,
provided that the broker does not have actual knowledge that the holder is a
U.S. person or that the conditions of any other exemption are not, in fact,
satisfied. The payment of the proceeds from the disposition of a note to or
through a non-U.S. office of a non-U.S. broker that is not a U.S. related
person will not be subject to information reporting or backup withholding. For
this purpose, a "U.S. related person" is (1) a "controlled foreign corporation"
for U.S. federal income tax purposes or (2) a foreign person 50% or more of
whose gross income from all sources for the three-year period ending with the
close of its taxable year preceding the payment (or for such part of the period
that the broker has been in existence) is derived from activities that are
effectively connected with the conduct of a U.S. trade or business.     
   
    In the case of the payment of proceeds from the disposition of notes to or
through a non-U.S. office of a broker that is either a U.S. person or a U.S.
related person, the regulations require information reporting on the payment
unless the broker has documentary evidence in its files that the owner is a
non-U.S. holder and the broker has no knowledge to the contrary. Backup
withholding will not apply to payments made through foreign offices of a broker
that is a U.S. person or a U.S. related person (absent actual knowledge that
the payee is a U.S. person).     
   
    Any amounts withheld under the backup withholding rules from a payment to a
non-U.S. holder will be allowed as a refund or a credit against such non-U.S.
holder's U.S. federal income tax liability, provided that the requisite
procedures are followed.     
   
    The Treasury Department recently promulgated final regulations regarding
the withholding and information reporting rules discussed above. In general,
the final regulations do not significantly alter the substantive withholding
and information reporting requirements but rather unify current certification
procedures and forms and clarify reliance standards. The final regulations are
generally effective for payments made after December 31, 1999, subject to
certain transition rules. Non-U.S. holders should consult their own tax
advisors with respect to the impact, if any, of the final regulations.     
 
                                      181
<PAGE>
 
    [E] CERTAIN U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON-U.S. HOLDERS
   
    The following general discussion summarizes certain of the material U.S.
federal income and estate tax aspects of the ownership and disposition of
common stock applicable to non-U.S. holders of common stock. In general, a
"non-U.S. holder" is a person other than:     
     
  (1) a citizen or resident of the United States,     
     
  (2) a corporation or other entity taxable as a corporation created or
      organized under the laws of the United States or any political
      subdivision thereof or therein,     
     
  (3) an estate the income of which is subject to U.S. federal income
      taxation regardless of its sources or     
     
  (4) a trust if a U.S. court is able to exercise primary jurisdiction over
      administration of the trust and one or more U.S. persons have
      authority to control all substantial decisions of the trust. The
      discussion is based upon the Internal Revenue Code of 1986, as
      amended, regulations of the Treasury Department, Internal Revenue
      Service rulings and pronouncements and judicial decisions now in
      effect, all of which are subject to change (possibly on a retroactive
      basis). The discussion does not address aspects of U.S. federal
      taxation other than income and estate taxation and does not address
      all aspects of federal income and estate taxation. The discussion does
      not consider any specific facts or circumstances that may apply to a
      particular non-U.S. holder and does not address all aspects of U.S.
      federal income tax law that may be relevant to non-U.S. holders that
      may be subject to special treatment under such law (for example,
      insurance companies, tax-exempt organizations, financial institutions,
      broker-dealers or certain U.S. expatriates).     
 
    Persons considering the purchase of common stock should consult their own
tax advisors concerning the application of U.S. federal income tax laws, as
well as the laws of any state, local or foreign taxing jurisdiction to their
particular situations.
 
Dividends
   
    In general, the gross amount of dividends paid to a non-U.S. holder will be
subject to U.S. withholding tax at a 30% rate (or any lower rate prescribed by
an applicable tax treaty) unless the dividends are:     
     
  (1) effectively connected with a trade or business carried on by the non-
      U.S. holder within the United States and a Form 4224 is filed with the
      withholding agent or     
     
  (2) if a tax treaty applies, are attributable to a United States permanent
      establishment of the non-U.S. holder. If either exception applies, the
      dividend will be taxed at ordinary U.S. federal income tax rates. A
      non-U.S. holder may be required to satisfy certain certification
      requirements in order to claim the benefit of an applicable treaty
      rate or otherwise claim a reduction of, or exemption from, the
      withholding obligation pursuant to the above described rules. In the
      case of a non-U.S. holder that is a corporation, effectively connected
      income may also be subject to an additional branch profits tax (which
      is generally imposed on a foreign corporation at a rate of 30% of the
      deemed repatriation from the United States of "effectively connected
      earnings and profits" or such lower rate as an applicable tax treaty
      may provide). To the extent a distribution exceeds current or
      accumulated earnings or profits, it will be treated first as a return
      of the holder's basis to the extent thereof, and then as a gain from
      the sale of a capital asset. Any withholding tax on a distribution in
      excess of our accumulated earnings or profits is refundable to the
      non-U.S. holder upon filing an appropriate claim with the IRS.     
 
                                      182
<PAGE>
 
Disposition of Common Stock
   
    Generally, a non-U.S. holder will not be subject to U.S. federal income tax
on any gain recognized upon the disposition of common stock unless:     
     
  (1) the gain is effectively connected with a trade or business carried on
      by the non-U.S. holder within the United States, or, alternatively, if
      a tax treaty applies, attributable to a United States permanent
      establishment maintained by the non-U.S. holder (in which case such
      gain will be subject to tax at the rates and in the manner applicable
      to U.S. persons, and, if the holder is a foreign corporation, the
      branch profits tax may also apply),     
     
  (2) the common stock is disposed of by an individual non-U.S. holder, who
      holds the common stock as a capital asset and is present in the United
      States for 183 days or more in the taxable year of the disposition and
      certain other conditions are met (in which case such gain will be
      subject to a flat 30% tax, which may be offset by United States source
      capital losses (even though the individual is not considered a
      resident of the United States)) or     
     
  (3) (A) we are or have been a "U.S. real property holding corporation"
      within the meaning of Section 897(c)(2) of the Code at any time within
      the shorter of the five-year period preceding such disposition or such
      non-U.S. holder's holding period and (B) assuming that the common
      stock is "regularly traded on an established securities market" for
      U.S. federal income tax purposes, the non-U.S. holder held, directly
      or indirectly, at any time during the applicable period from clause
      (A) above, including on the date of disposition, more than 5% of the
      outstanding common stock. Although we believe we currently are not a
      U.S. real property holding corporation, we anticipate becoming such a
      corporation as a result of the Bell Atlantic joint venture and the
      proposed BellSouth transaction. Non-U.S. holders should consult
      applicable treaties, which may exempt from U.S. taxation gains
      realized upon the disposition of common stock in certain cases.     
 
Estate Tax
   
    Common stock owned (or treated as owned) by an individual non-U.S. holder
at the time of death will be includible in the individual's gross estate for
U.S. federal estate tax purposes, and may be subject to U.S. federal estate
tax, unless an applicable treaty provides otherwise.     
 
Information Reporting and Backup Withholding
   
    On October 6, 1997, the IRS issued final regulations relating to
withholding, information reporting and backup withholding that unify current
certification procedures and forms and clarify reliance standards. The final
regulations generally will be effective with respect to payments made after
December 31, 1999.     
   
    Except as provided below, this section describes rules applicable to
payments made on or before December 31, 1999. Backup withholding (which
generally is a withholding tax imposed at the rate of 31% on certain payments
to persons that fail to furnish the information required under the U.S.
information reporting and backup withholding rules) generally will not apply to
(1) dividends paid to non-U.S. holders that are subject to the 30% withholding
discussed above (or that are not so subject because a tax treaty applies that
reduces or eliminates such 30% withholding) or (2) dividends paid on the common
stock to a non-U.S. holder at an address outside the United States (unless the
payor has actual knowledge that the payee is a U.S. person). We will be
required to report annually to the IRS and to each non-U.S. holder the amount
of dividends paid to, and the tax withheld with respect to, such holder,
regardless of whether any tax was actually withheld or whether withholding was
required. This information may also be made available to the tax authorities in
the non-U.S. holder's country of residence.     
   
    In the case of a non-U.S. holder that sells common stock to or through a
U.S. office of a broker, the broker must backup withhold at a rate of 31% and
report the sale to the IRS, unless the holder     
 
                                      183
<PAGE>
 
   
certifies its non-U.S. status under penalties of perjury or otherwise
establishes an exemption. In the case of a non-U.S. holder that sells common
stock to or through the foreign office of a U.S. broker, or a foreign broker
with certain types of relationships to the United States, the broker must
report the sale to the IRS (but not backup withhold) unless the broker has
documentary evidence in its files that the seller is a non-U.S. holder or
certain other conditions are met, or the holder otherwise establishes an
exemption. A non-U.S. holder will generally not be subject to information
reporting or backup withholding if such non-U.S. holder sells the common stock
to or through a foreign office of a non-U.S. broker.     
 
    Any amount withheld under the backup withholding rules from a payment to a
holder is allowable as a credit against the holder's U.S. federal income tax,
which may entitle the holder to a refund, provided that the holder furnishes
the required information to the IRS. In addition, certain penalties may be
imposed by the IRS on a holder who is required to supply information but does
not do so in the proper manner.
   
    The final regulations eliminate the general, current legal presumption
that dividends paid to an address in a foreign country are paid to a resident
of that country. In addition, the final regulations impose certain
certification and documentation requirements on non-U.S. holders claiming the
benefit, under a tax treaty, of a reduced withholding rate with respect to
dividends.     
   
    Prospective purchasers of the common stock are urged to consult their own
tax advisors as to the effect, if any, of the final regulations on their
purchase, ownership and disposition of the common stock.     
 
                               [D] LEGAL MATTERS
   
    The legality of the notes offered hereby will be passed upon for us by
Cravath, Swaine & Moore, New York, New York. Certain legal matters in
connection with the offerings will be passed upon for the underwriters by
Latham & Watkins, New York, New York.     
 
                               [E] LEGAL MATTERS
   
    The legality of the securities offered hereby will be passed upon for us
by Cravath, Swaine & Moore, New York, New York. Certain legal matters in
connection with the offerings will be passed upon for the underwriters by
Latham & Watkins, New York, New York.     
 
                             INDEPENDENT AUDITORS
   
    The consolidated financial statements and schedule of CCIC at December 31,
1997 and 1998, and for each of the three years in the period ended December
31, 1998, the financial statements of the Home Service Transmission business
of the BBC at March 31, 1996 and for the year ended March 31, 1996 and the
period from April 1, 1996 to February 27, 1997 and the consolidated financial
statements of CTI at March 31, 1997 and December 31, 1997 and for the period
from February 28, 1997 to March 31, 1997 and the period from April 1, 1997 to
December 31, 1997, have been included herein in reliance upon the report of
KPMG LLP, independent certified public accountants, appearing elsewhere
herein, and upon the authority of said firm as experts in accounting and
auditing.     
 
                                      184
<PAGE>
 
                          
                       CERTAIN CURRENCY TRANSLATIONS     
   
    Our U.K. subsidiary, Castle Transmission Services (Holdings) Ltd., which we
refer to as CTSH, publishes its consolidated financial statements in pounds
sterling. For the convenience of the reader, this prospectus contains
translations of certain pound sterling amounts into U.S. dollars at specified
rates, or, if not so specified, at the noon buying rate in New York City for
cable transfers in pounds sterling as certified for customs purposes by the
Federal Reserve Bank of New York on December 31, 1998, of (Pounds)1.00 =
$1.6628. No representation is made that the pound sterling amounts have been,
could have been or could be converted into U.S. dollars at the rates indicated
or any other rates. On March 15, 1999, the noon buying rate was (Pounds)1.00 =
$1.6223.     
 
                             AVAILABLE INFORMATION
   
    We are subject to the informational requirements of the Securities Exchange
Act of 1934 and in accordance therewith files reports and other information
with the Commission. Such reports and other information can be inspected and
copied at the public reference facilities maintained by the Commission at its
offices at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C.
20549, and at the Commission's Regional Offices at Citicorp Center, 500 West
Madison Street, Suite 1400, Chicago, Illinois 60661, and Seven World Trade
Center, 13th Floor, New York, New York 10048. Copies of such materials can be
obtained by mail from the Public Reference Section of the Commission at 450
Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates. Such reports
and other information concerning the Company are also available for inspection
at the offices of the Nasdaq National Market, 1735 K Street, N.W., Washington,
D.C. 20006. In addition, the Commission maintains an Internet site at
http://www.sec.gov that contains reports, proxy and information statements and
other information regarding registrants, including the Company, that file
electronically with the Commission.     
 
    Anyone who receives this prospectus may obtain a copy of any of the
agreements summarized herein without charge by writing to Crown Castle
International Corp., 510 Bering Drive, Suite 500, Houston, TX 77057, Attention:
Secretary.
 
                                      185
<PAGE>
 
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<S>                                                                         <C>
CROWN CASTLE INTERNATIONAL CORP.
Report of KPMG LLP, Independent Certified Public Accountants..............   F-2
Consolidated Balance Sheet as of December 31, 1997 and 1998...............   F-3
Consolidated Statement of Operations and Comprehensive Loss for each of
 the three years in the period ended December 31, 1998....................   F-4
Consolidated Statement of Cash Flows for each of the three years in the
 period ended December 31, 1998...........................................   F-5
Consolidated Statement of Stockholders' Equity (Deficit) for each of the
 three years in the period ended December 31, 1998........................   F-6
Notes to Consolidated Financial Statements for each of the three years in
 the period ended December 31, 1998.......................................   F-7
CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND THE BBC HOME SERVICE
 TRANSMISSION BUSINESS
Report of KPMG, Chartered Accountants.....................................  F-33
Profit and Loss Accounts of the BBC Home Service Transmission business for
 the Year ended March 31, 1996 and the Period from April 1, 1996 to
 February 27, 1997 and the Consolidated Profit and Loss Accounts of Castle
 Transmission Services (Holdings) Ltd for the Period from February 28,
 1997 to March 31, 1997 and for the Period from April 1, 1997 to December
 31, 1997.................................................................  F-34
Balance Sheet of the BBC Home Service Transmission business at March 31,
 1996 and Consolidated Balance Sheets of Castle Transmission Services
 (Holdings) Ltd at March 31, 1997 and at December 31, 1997................  F-35
Cash Flow Statements of the BBC Home Service Transmission business for the
 Year ended March 31, 1996 and the Period from April 1, 1996 to February
 27, 1997 and the Consolidated Cash Flow Statements of Castle Transmission
 Services (Holdings) Ltd for the Period from February 28, 1997 to March
 31, 1997 and for the Period from April 1, 1997 to December 31, 1997......  F-36
Reconciliation of Movements in Corporate Funding of the BBC Home Service
 Transmission business for the Year ended March 31, 1996 and the Period
 from April 1, 1996 to February 27, 1997 and Consolidated Reconciliation
 of Movements in Shareholders' Funds of Castle Transmission Services
 (Holdings) Ltd for the Period from February 28, 1997 to March 31, 1997
 and for the Period from April 1, 1997 to December 31, 1997...............  F-37
Notes to the Consolidated Financial Statements............................  F-38
BELL ATLANTIC MOBILE TOWER OPERATIONS
Report of KPMG LLP, Independent Certified Public Accountants..............  F-64
Statement of Net Assets as of December 31, 1998...........................  F-65
Statements of Revenues and Direct Expenses for each of the two years in
 the period ended December 31, 1998.......................................  F-66
Notes to Financial Statements for each of the two years in the period
 ended December 31, 1998..................................................  F-67
POWERTEL TOWER OPERATIONS
Report of KPMG LLP, Independent Certified Public Accountants..............  F-69
Statement of Net Assets as of December 31, 1998...........................  F-70
Statement of Revenues and Direct Expenses for the year ended December 31,
 1998.....................................................................  F-71
Notes to Financial Statements for the year ended December 31, 1998........  F-72
</TABLE>
 
                                      F-1
<PAGE>
 
                          INDEPENDENT AUDITORS' REPORT
 
To the Board of Directors and Stockholders of
 Crown Castle International Corp.:
 
    We have audited the accompanying consolidated balance sheets of Crown
Castle International Corp. and subsidiaries as of December 31, 1997 and 1998,
and the related consolidated statements of operations and comprehensive loss,
cash flows and stockholders' equity (deficit) for each of the years in the
three-year period ended December 31, 1998. These consolidated financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these consolidated financial
statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
    In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Crown
Castle International Corp. and subsidiaries as of December 31, 1997 and 1998,
and the results of their operations and their cash flows for each of the years
in the three-year period ended December 31, 1998, in conformity with generally
accepted accounting principles.
 
                                          KPMG LLP
 
Houston, Texas
February 24, 1999
 
                                      F-2
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
                           CONSOLIDATED BALANCE SHEET
 
                (In thousands of dollars, except share amounts)
 
<TABLE>
<CAPTION>
                                                             December 31,
                                                          --------------------
                                                            1997       1998
                         ASSETS                           --------  ----------
<S>                                                       <C>       <C>
Current assets:
  Cash and cash equivalents.............................  $ 55,078  $  296,450
  Receivables:
   Trade, net of allowance for doubtful accounts of $177
    and $1,535 at December 31, 1997 and 1998,
    respectively........................................     9,264      32,130
   Other................................................       811       4,290
  Inventories...........................................     1,322       6,599
  Prepaid expenses and other current assets.............       681       2,647
                                                          --------  ----------
   Total current assets.................................    67,156     342,116
Property and equipment, net.............................    81,968     592,594
Investments in affiliates...............................    59,082       2,258
Goodwill and other intangible assets, net of accumulated
 amortization of $3,997 and $20,419 at December 31, 1997
 and 1998, respectively.................................   152,541     569,740
Deferred financing costs and other assets, net of
 accumulated amortization of $743 and $1,722 at December
 31, 1997 and 1998, respectively........................    10,644      16,522
                                                          --------  ----------
                                                          $371,391  $1,523,230
                                                          ========  ==========
<CAPTION>
          LIABILITIES AND STOCKHOLDERS' EQUITY
<S>                                                       <C>       <C>
Current liabilities:
  Accounts payable......................................  $  7,760  $   46,020
  Accrued interest......................................        --      15,677
  Accrued compensation and related benefits.............     1,792       5,188
  Deferred rental revenues and other accrued
   liabilities..........................................     2,398      26,002
                                                          --------  ----------
   Total current liabilities............................    11,950      92,887
Long-term debt..........................................   156,293     429,710
Other liabilities.......................................       607      22,823
                                                          --------  ----------
   Total liabilities....................................   168,850     545,420
                                                          --------  ----------
Commitments and contingencies (Note 12)
Minority interests......................................        --      39,185
Redeemable preferred stock, $.01 par value; 10,000,000
 shares authorized:
  12 3/4% Senior Exchangeable Preferred Stock; shares
   issued: December 31, 1997--none and December 31,
   1998--200,000 (stated at mandatory redemption and
   aggregate liquidation value).........................        --     201,063
  Senior Convertible Preferred Stock; shares issued:
   December 31, 1997--657,495 and December 31, 1998--
   none (stated at redemption value; aggregate
   liquidation value of $68,916)........................    67,948          --
  Series A Convertible Preferred Stock; shares issued:
   December 31, 1997--1,383,333 and December 31, 1998--
   none (stated at redemption and aggregate liquidation
   value)...............................................     8,300          --
  Series B Convertible Preferred Stock; shares issued:
   December 31, 1997--864,568 and December 31,
   1998--none (stated at redemption and aggregate
   liquidation value)...................................    10,375          --
  Series C Convertible Preferred Stock; shares issued:
   December 31, 1997--3,529,832 and December 31, 1998--
   none (stated at redemption and aggregate liquidation
   value)...............................................    74,126          --
                                                          --------  ----------
   Total redeemable preferred stock.....................   160,749     201,063
                                                          --------  ----------
Stockholders' equity:
  Common stock, $.01 par value; 690,000,000 shares
   authorized:
  Class A Common Stock; shares issued: December 31,
   1997--1,041,565 and December 31, 1998--none..........         2          --
  Class B Common Stock; shares issued: December 31,
   1997--9,367,165 and December 31, 1998--none..........        19          --
  Common Stock; shares issued: December 31, 1997--none
   and December 31, 1998--83,123,873....................        --         831
  Class A Common Stock; shares issued: December 31,
   1997--none and December 31, 1998--11,340,000.........        --         113
Additional paid-in capital..............................    58,248     795,153
Cumulative foreign currency translation adjustment......       562       1,690
Accumulated deficit.....................................   (17,039)    (60,225)
                                                          --------  ----------
   Total stockholders' equity...........................    41,792     737,562
                                                          --------  ----------
                                                          $371,391  $1,523,230
                                                          ========  ==========
</TABLE>
                See notes to consolidated financial statements.
 
                                      F-3
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
          CONSOLIDATED STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS
 
              (In thousands of dollars, except per share amounts)
 
<TABLE>
<CAPTION>
                                                    Years Ended December 31,
                                                    --------------------------
                                                     1996     1997      1998
                                                    ------  --------  --------
<S>                                                 <C>     <C>       <C>
Net revenues:
  Site rental and broadcast transmission........... $5,615  $ 11,010  $ 75,028
  Network services and other.......................    592    20,395    38,050
                                                    ------  --------  --------
                                                     6,207    31,405   113,078
                                                    ------  --------  --------
Operating expenses:
  Costs of operations (exclusive of depreciation
   and amortization):
    Site rental and broadcast transmission.........  1,292     2,213    26,254
    Network services and other.....................      8    13,137    21,564
  General and administrative.......................  1,678     6,824    23,571
  Corporate development............................  1,324     5,731     4,625
  Non-cash compensation charges....................     --        --    12,758
  Depreciation and amortization....................  1,242     6,952    37,239
                                                    ------  --------  --------
                                                     5,544    34,857   126,011
                                                    ------  --------  --------
Operating income (loss)............................    663    (3,452)  (12,933)
Other income (expense):
  Equity in earnings (losses) of unconsolidated
   affiliate.......................................     --    (1,138)    2,055
  Interest and other income (expense)..............    193     1,951     4,220
  Interest expense and amortization of deferred
   financing costs................................. (1,803)   (9,254)  (29,089)
                                                    ------  --------  --------
Loss before income taxes and minority interests....   (947)  (11,893)  (35,747)
Provision for income taxes.........................    (10)      (49)     (374)
Minority interests.................................     --        --    (1,654)
                                                    ------  --------  --------
Net loss...........................................   (957)  (11,942)  (37,775)
Dividends on preferred stock.......................     --    (2,199)   (5,411)
                                                    ------  --------  --------
Net loss after deduction of dividends on preferred
 stock............................................. $ (957) $(14,141) $(43,186)
                                                    ======  ========  ========
Net loss........................................... $ (957) $(11,942) $(37,775)
Other comprehensive income:
  Foreign currency translation adjustments.........     --       562     1,128
                                                    ------  --------  --------
Comprehensive loss................................. $ (957) $(11,380) $(36,647)
                                                    ======  ========  ========
Loss per common share--basic and diluted........... $(0.27) $  (2.27) $  (1.02)
                                                    ======  ========  ========
Common shares outstanding--basic and diluted (in
 thousands)........................................  3,503     6,238    42,518
                                                    ======  ========  ========
</TABLE>
 
                See notes to consolidated financial statements.
 
                                      F-4
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
                      CONSOLIDATED STATEMENT OF CASH FLOWS
 
                           (In thousands of dollars)
 
<TABLE>
<CAPTION>
                                                   Years Ended December 31,
                                                   ---------------------------
                                                    1996      1997      1998
                                                   -------  --------  --------
<S>                                                <C>      <C>       <C>
Cash flows from operating activities:
 Net loss......................................... $  (957) $(11,942) $(37,775)
 Adjustments to reconcile net loss to net cash
  provided by (used for) operating activities:
  Depreciation and amortization...................   1,242     6,952    37,239
  Amortization of deferred financing costs and
   discounts on long-term debt....................      55     2,159    17,910
  Non-cash compensation charges...................      --        --    12,758
  Minority interests..............................      --        --     1,654
  Equity in losses (earnings) of unconsolidated
   affiliate......................................      --     1,138    (2,055)
  Changes in assets and liabilities, excluding the
   effects of acquisitions:
   Increase in accounts payable...................     323     1,824    15,373
   Increase (decrease) in deferred rental revenues
    and other liabilities.........................     219      (240)    5,847
   Increase (decrease) in accrued interest........     306      (396)    5,835
   Decrease (increase) in receivables.............  (1,695)    1,353    (7,450)
   Increase in inventories, prepaid expenses and
    other assets..................................     (23)   (1,472)   (4,360)
                                                   -------  --------  --------
    Net cash provided by (used for) operating
     activities...................................    (530)     (624)   44,976
                                                   -------  --------  --------
Cash flows from investing activities:
 Capital expenditures.............................    (890)  (18,035) (138,759)
 Acquisitions of businesses, net of cash
  acquired........................................ (10,925)  (33,962)  (10,489)
 Investments in affiliates........................  (2,101)  (59,487)       --
                                                   -------  --------  --------
    Net cash used for investing activities........ (13,916) (111,484) (149,248)
                                                   -------  --------  --------
Cash flows from financing activities:
 Proceeds from issuance of capital stock..........  10,503   139,867   339,929
 Net borrowings (payments) under revolving credit
  agreements......................................  11,000    (6,223)    9,212
 Incurrence of financing costs....................    (180)   (7,798)   (3,010)
 Purchase of capital stock........................      --    (2,132)     (883)
 Proceeds from issuance of long-term debt.........      --   150,010        --
 Principal payments on long-term debt.............    (130) (113,881)       --
                                                   -------  --------  --------
    Net cash provided by financing activities.....  21,193   159,843   345,248
                                                   -------  --------  --------
Effect of exchange rate changes on cash...........      --        --       396
                                                   -------  --------  --------
Net increase in cash and cash equivalents.........   6,747    47,735   241,372
Cash and cash equivalents at beginning of year....     596     7,343    55,078
                                                   -------  --------  --------
Cash and cash equivalents at end of year.......... $ 7,343  $ 55,078  $296,450
                                                   =======  ========  ========
Supplementary schedule of noncash investing and
 financing activities:
 Conversion of stockholder's Convertible Secured
  Subordinated Notes to Series A Convertible
  Preferred Stock.................................      --  $  3,657        --
 Amounts recorded in connection with acquisitions
  (see Note 2):
  Fair value of net assets acquired, including
   goodwill and other intangible assets...........  10,958   197,235   431,453
  Issuance of common stock........................      --    57,189   420,964
  Issuance of long-term debt......................      --    78,102        --
  Assumption of long-term debt....................      --    27,982        --
  Amounts due to seller...........................      33        --        --
Supplemental disclosure of cash flow information:
 Interest paid.................................... $ 1,442  $  7,533  $  6,276
 Income taxes paid................................      --        26       446
</TABLE>
 
                See notes to consolidated financial statements.
 
                                      F-5
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
           CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (DEFICIT)
 
                (In thousands of dollars, except share amounts)
 
<TABLE>
<CAPTION>
                   Class A Common Stock   Class B Common Stock       Common Stock       Class A Common Stock  Additional
                   ---------------------- ---------------------- ---------------------- ---------------------  Paid-In
                     Shares    ($.01 Par)   Shares    ($.01 Par)   Shares    ($.01 Par)   Shares   ($.01 Par)  Capital
                   ----------  ---------- ----------  ---------- ----------  ---------- ---------- ---------- ----------
<S>                <C>         <C>        <C>         <C>        <C>         <C>        <C>        <C>        <C>
Balance, January
1, 1996..........   1,350,000     $  3     1,433,330     $  3            --     $ --            --    $ --     $    634
 Issuances of
 capital stock...          --       --        55,000       --            --       --            --      --          128
 Net loss........          --       --            --       --            --       --            --      --           --
                   ----------     ----    ----------     ----    ----------     ----    ----------    ----     --------
Balance, December
31, 1996.........   1,350,000        3     1,488,330        3            --       --            --      --          762
 Issuances of
 capital stock...          --       --     8,228,835       17            --       --            --      --       57,696
 Purchase of
 capital stock...    (308,435)      (1)     (350,000)      (1)           --       --            --      --         (210)
 Foreign currency
 translation
 adjustments.....          --       --            --       --            --       --            --      --           --
 Dividends on
 preferred
 stock...........          --       --            --       --            --       --            --      --           --
 Net loss........          --       --            --       --            --       --            --      --           --
                   ----------     ----    ----------     ----    ----------     ----    ----------    ----     --------
Balance, December
31, 1997.........   1,041,565        2     9,367,165       19            --       --            --      --       58,248
 Conversion of
 preferred stock
 to Common
 Stock...........          --       --            --       --    38,517,865      385            --      --      164,712
 Conversion of
 Class A Common
 Stock and Class
 B Common Stock
 to Common
 Stock...........  (1,041,565)      (2)   (9,367,165)     (19)   10,953,625      109            --      --          (88)
 Issuances of
 capital stock...          --       --            --       --    33,793,453      338    11,340,000     113      560,779
 Purchase of
 capital stock...          --       --            --       --      (141,070)      (1)           --      --         (882)
 Non-cash
 compensation
 charges.........          --       --            --       --            --       --            --      --       12,384
 Foreign currency
 translation
 adjustments.....          --       --            --       --            --       --            --      --           --
 Dividends on
 preferred
 stock...........          --       --            --       --            --       --            --      --           --
 Net loss........          --       --            --       --            --       --            --      --           --
                   ----------     ----    ----------     ----    ----------     ----    ----------    ----     --------
Balance, December
31, 1998.........          --     $ --            --     $ --    83,123,873     $831    11,340,000    $113     $795,153
                   ==========     ====    ==========     ====    ==========     ====    ==========    ====     ========
<CAPTION>
                   Cumulative
                     Foreign
                    Currency
                   Translation Accumulated
                   Adjustment    Deficit    Total
                   ----------- ----------- ---------
<S>                <C>         <C>         <C>
Balance, January
1, 1996..........    $   --     $    (21)  $    619
 Issuances of
 capital stock...        --           --        128
 Net loss........        --         (957)      (957)
                   ----------- ----------- ---------
Balance, December
31, 1996.........        --         (978)      (210)
 Issuances of
 capital stock...        --           --     57,713
 Purchase of
 capital stock...        --       (1,920)    (2,132)
 Foreign currency
 translation
 adjustments.....       562           --        562
 Dividends on
 preferred
 stock...........        --       (2,199)    (2,199)
 Net loss........        --      (11,942)   (11,942)
                   ----------- ----------- ---------
Balance, December
31, 1997.........       562      (17,039)    41,792
 Conversion of
 preferred stock
 to Common
 Stock...........        --           --    165,097
 Conversion of
 Class A Common
 Stock and Class
 B Common Stock
 to Common
 Stock...........        --           --         --
 Issuances of
 capital stock...        --           --    561,230
 Purchase of
 capital stock...        --           --       (883)
 Non-cash
 compensation
 charges.........        --           --     12,384
 Foreign currency
 translation
 adjustments.....     1,128           --      1,128
 Dividends on
 preferred
 stock...........        --       (5,411)    (5,411)
 Net loss........        --      (37,775)   (37,775)
                   ----------- ----------- ---------
Balance, December
31, 1998.........    $1,690     $(60,225)  $737,562
                   =========== =========== =========
</TABLE>
 
                See notes to consolidated financial statements.
 
                                      F-6
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
1.Basis of Presentation and Summary of Significant Accounting Policies
 
 Basis of Presentation
 
    The consolidated financial statements include the accounts of Crown Castle
International Corp. and its majority and wholly owned subsidiaries,
collectively referred to herein as the "Company." All significant intercompany
balances and transactions have been eliminated in consolidation. Certain
reclassifications have been made to the prior year's financial statements to be
consistent with the presentation in the current year.
 
    The Company owns, operates and manages wireless communications sites and
broadcast transmission networks. The Company also provides complementary
services to its customers, including network design, radio frequency
engineering, site acquisition, site development and construction, antenna
installation and network management and maintenance. The Company's
communications sites are located throughout the United States, in Puerto Rico
and in the United Kingdom. In the United States and Puerto Rico, the Company's
primary business is the leasing of antenna space to wireless operators under
long-term contracts. In the United Kingdom, the Company's primary business is
the operation of television and radio broadcast transmission networks; the
Company also leases antenna space to wireless operators in the United Kingdom.
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities, the
disclosure of contingent assets and liabilities as of the date of the financial
statements, and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
 Summary of Significant Accounting Policies
 
  Cash Equivalents
    Cash equivalents consist of highly liquid investments with original
maturities of three months or less.
 
  Inventories
    Inventories are stated at the lower of cost or market. Cost is determined
using the first-in, first-out (FIFO) method.
 
  Property and Equipment
    Property and equipment is stated at cost, net of accumulated depreciation.
Depreciation is computed utilizing the straight-line method at rates based upon
the estimated useful lives of the various classes of assets. Additions,
renewals and improvements are capitalized, while maintenance and repairs are
expensed. Upon the sale or retirement of an asset, the related cost and
accumulated depreciation are removed from the accounts and any gain or loss is
recognized.
 
    In March 1995, the Financial Accounting Standards Board (the "FASB") issued
Statement of Financial Accounting Standards No. 121, Accounting for the
Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of
("SFAS 121"). SFAS 121 requires that long-lived assets and certain identifiable
intangibles be reviewed for impairment whenever events or changes in
circumstances indicate that the carrying amount of an asset may not be
recoverable. SFAS 121 was
 
                                      F-7
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
effective for fiscal years beginning after December 15, 1995. The adoption of
SFAS 121 by the Company in 1996 did not have a material impact on its
consolidated financial statements.
 
  Goodwill and Other Intangible Assets
    Goodwill and other intangible assets represents the excess of the purchase
price for an acquired business over the allocated value of the related net
assets (see Note 2). Goodwill is amortized on a straight-line basis over a
twenty year life. Other intangible assets (principally the value of existing
site rental contracts at Crown Communications) are amortized on a straight-line
basis over a ten year life. The carrying value of goodwill and other intangible
assets will be reviewed for impairment whenever events or changes in
circumstances indicate that the carrying amount of the acquired assets may not
be recoverable. If the sum of the estimated future cash flows (undiscounted)
expected to result from the use and eventual disposition of an asset is less
than the carrying amount of the asset, an impairment loss is recognized.
Measurement of an impairment loss is based on the fair value of the asset.
 
  Deferred Financing Costs
    Costs incurred to obtain financing are deferred and amortized over the
estimated term of the related borrowing. At December 31, 1997, other accrued
liabilities includes $1,160,000 of such costs related to the issuance of the
Company's 10 5/8% Senior Discount Notes.
 
  Revenue Recognition
    Site rental revenues are recognized on a monthly basis under lease or
management agreements with terms ranging from 12 months to 25 years. Broadcast
transmission revenues are recognized on a monthly basis under transmission
contracts with terms ranging from 8 years to 12 years.
 
    Network services revenues from site development, construction and antennae
installation activities are recognized under a method which approximates the
completed contract method. This method is used because these services are
typically completed in three months or less and financial position and results
of operations do not vary significantly from those which would result from use
of the percentage-of-completion method. These services are considered complete
when the terms and conditions of the contract or agreement have been
substantially completed. Costs and revenues associated with installations not
complete at the end of a period are deferred and recognized when the
installation becomes operational. Any losses on contracts are recognized at
such time as they become known.
 
    Network services revenues from design, engineering, site acquisition, and
network management and maintenance activities are recognized under service
contracts with customers which provide for billings on a time and materials,
cost plus profit, or fixed price basis. Such contracts typically have terms
from six months to two years. Revenues are recognized as services are performed
with respect to the time and materials contracts. Revenues are recognized using
the percentage-of-completion method for cost plus profit and fixed price
contracts, measured by the percentage of contract costs incurred to date
compared to estimated total contract costs. Provisions for estimated losses on
uncompleted contracts are made in the period in which such losses are
determined.
 
  Corporate Development Expenses
    Corporate development expenses represent costs incurred in connection with
acquisitions and development of new business initiatives.
 
 
                                      F-8
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
  Income Taxes
    The Company accounts for income taxes using an asset and liability
approach, which requires the recognition of deferred income tax assets and
liabilities for the expected future tax consequences of events that have been
recognized in the Company's financial statements or tax returns. Deferred
income tax assets and liabilities are determined based on the temporary
differences between the financial statement and tax bases of assets and
liabilities using enacted tax rates.
 
  Per Share Information
    Per share information is based on the weighted-average number of common
shares outstanding during each period for the basic computation and, if
dilutive, the weighted-average number of potential common shares resulting from
the assumed conversion of outstanding stock options, warrants and convertible
preferred stock for the diluted computation.
 
    A reconciliation of the numerators and denominators of the basic and
diluted per share computations is as follows:
 
<TABLE>
<CAPTION>
                                                    Years Ended December 31,
                                                    --------------------------
                                                     1996     1997      1998
                                                    ------  --------  --------
                                                        (In thousands of
                                                            dollars,
                                                        except per share
                                                            amounts)
   <S>                                              <C>     <C>       <C>
   Net loss........................................ $ (957) $(11,942) $(37,775)
   Dividends on preferred stock....................     --    (2,199)   (5,411)
                                                    ------  --------  --------
   Net loss applicable to common stock for basic
    and diluted computations....................... $ (957) $(14,141) $(43,186)
                                                    ======  ========  ========
   Weighted-average number of common shares
    outstanding during the period for basic and
    diluted computations (in thousands)............  3,503     6,238    42,518
                                                    ======  ========  ========
   Loss per common share--basic and diluted........ $(0.27) $  (2.27) $  (1.02)
                                                    ======  ========  ========
</TABLE>
 
    The calculations of common shares outstanding for the diluted computations
exclude the following potential common shares as of December 31, 1998: (i)
options to purchase 16,585,197 shares of common stock at exercise prices
ranging from $-0- to $17.625 per share; (ii) warrants to purchase 1,314,990
shares of common stock at an exercise price of $7.50 per share; and (iii)
shares of Castle Transmission Services (Holdings) Ltd ("CTI") stock which are
convertible into 17,443,500 shares of common stock. The inclusion of such
potential common shares in the diluted per share computations would be
antidilutive since the Company incurred net losses for each of the three years
in the period ended December 31, 1998.
 
  Foreign Currency Translation
    CTI uses the British pound as the functional currency for its operations.
The Company translates CTI's results of operations using the average exchange
rate for the period, and translates CTI's assets and liabilities using the
exchange rate at the end of the period. The cumulative effect of changes in the
exchange rate is recorded as a translation adjustment in stockholders' equity.
 
  Financial Instruments
    The carrying amount of cash and cash equivalents approximates fair value
for these instruments. The estimated fair value of the 10 5/8% Senior Discount
Notes and the 9% Guaranteed
 
                                      F-9
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
Bonds is based on quoted market prices, and the estimated fair value of the
other long-term debt is determined based on the current rates offered for
similar borrowings. The estimated fair value of the interest rate swap
agreement is based on the amount that the Company would receive or pay to
terminate the agreement at the balance sheet date. The estimated fair values of
the Company's financial instruments, along with the carrying amounts of the
related assets (liabilities), are as follows:
 
<TABLE>
<CAPTION>
                                         December 31, 1997   December 31, 1998
                                         ------------------  ------------------
                                         Carrying    Fair    Carrying    Fair
                                          Amount    Value     Amount    Value
                                         --------  --------  --------  --------
                                              (In thousands of dollars)
   <S>                                   <C>       <C>       <C>       <C>
   Cash and cash equivalents............ $ 55,078  $ 55,078  $296,450  $296,450
   Long-term debt....................... (156,293) (161,575) (429,710) (443,379)
   Interest rate swap agreement.........       --       (97)       --       (47)
</TABLE>
 
    The Company's interest rate swap agreement is used to manage interest rate
risk. The net settlement amount resulting from this agreement is recognized as
an adjustment to interest expense. The Company does not hold or issue
derivative financial instruments for trading purposes.
 
  Stock Options
    In October 1995, the FASB issued Statement of Financial Accounting
Standards No. 123, Accounting for Stock-Based Compensation ("SFAS 123"). SFAS
123 establishes alternative methods of accounting and disclosure for employee
stock-based compensation arrangements. The Company has elected to continue the
use of the "intrinsic value based method" of accounting for its employee stock
option plans (see Note 9). This method does not result in the recognition of
compensation expense when employee stock options are granted if the exercise
price of the options equals or exceeds the fair market value of the stock at
the date of grant. See Note 9 for the disclosures required by SFAS 123.
 
  Recent Accounting Pronouncements
    In June 1997, the FASB issued Statement of Financial Accounting Standards
No. 130, Reporting Comprehensive Income ("SFAS 130"). SFAS 130 establishes
standards for the reporting and display of comprehensive income in a company's
financial statements. Comprehensive income includes all changes in a company's
equity accounts (including net income or loss) except investments by, or
distributions to, the company's owners. Items which are components of
comprehensive income (other than net income or loss) include foreign currency
translation adjustments, minimum pension liability adjustments and unrealized
gains and losses on certain investments in debt and equity securities. The
components of comprehensive income must be reported in a financial statement
that is displayed with the same prominence as other financial statements. SFAS
130 is effective for fiscal years beginning after December 15, 1997. The
Company has adopted the requirements of SFAS 130 in its financial statements
for 1998.
 
    In June 1997, the FASB issued Statement of Financial Accounting Standards
No. 131, Disclosures about Segments of an Enterprise and Related Information
("SFAS 131"). SFAS 131 establishes standards for the way that public companies
report, in their annual financial statements, certain information about their
operating segments, their products and services, the geographic areas in which
they operate and their major customers. SFAS 131 also requires that certain
information about operating segments be reported in interim financial
statements. SFAS 131 is effective for periods beginning after December 15,
1997. The Company has adopted the requirements of SFAS 131 in its financial
statements for the year ended December 31, 1998 (see Note 13).
 
                                      F-10
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    In April 1998, the Accounting Standards Executive Committee of the American
Institute of Certified Public Accountants issued Statement of Position 98-5,
Reporting on the Costs of Start-Up Activities ("SOP 98-5"). SOP 98-5 requires
that costs of start-up activities be charged to expense as incurred and broadly
defines such costs. The Company has deferred certain costs incurred in
connection with potential business initiatives and new geographic markets, and
SOP 98-5 will require that such deferred costs be charged to results of
operations upon its adoption. SOP 98-5 is effective for fiscal years beginning
after December 15, 1998. The Company will adopt the requirements of SOP 98-5 as
of January 1, 1999. The cumulative effect of the change in accounting principle
for the adoption of SOP 98-5 will result in a charge to results of operations
in the Company's financial statements for the three months ending March 31,
1999; it is currently estimated that such charge will amount to approximately
$2,300,000.
 
    In June 1998, the FASB issued Statement of Financial Accounting Standards
No. 133, Accounting for Derivative Instruments and Hedging Activities ("SFAS
133"). SFAS 133 requires that derivative instruments be recognized as either
assets or liabilities in the consolidated balance sheet based on their fair
values. Changes in the fair values of such derivative instruments will be
recorded either in results of operations or in other comprehensive income,
depending on the intended use of the derivative instrument. The initial
application of SFAS 133 will be reported as the effect of a change in
accounting principle. SFAS 133 is effective for all fiscal quarters of fiscal
years beginning after June 15, 1999. The Company will adopt the requirements of
SFAS 133 in its financial statements for the three months ending March 31,
2000. The Company has not yet determined the effect that the adoption of SFAS
133 will have on its consolidated financial statements.
 
2.Acquisitions
 
    During the three years in the period ended December 31, 1998, the Company
consummated a number of business acquisitions which were accounted for using
the purchase method. Results of operations and cash flows of the acquired
businesses are included in the consolidated financial statements for the
periods subsequent to the respective dates of acquisition.
 
  Motorola, Inc. ("Motorola")
    On June 28, 1996, the Company acquired fifteen telecommunications towers
and related assets, and assets related to specialized mobile radio and
microwave services, from Motorola in Puerto Rico. The purchase price consisted
of $9,919,000 in cash. Motorola provided certain management services related to
these assets for a period of ninety days after the closing date. Management
fees for such services amounted to $57,000 for the year ended December 31,
1996.
 
  Other Acquisitions
    During 1996, the Company acquired a number of other telecommunications
towers and related equipment from various sellers. The aggregate total purchase
price for these acquisitions of $1,039,000 consisted of $1,006,000 in cash and
a $33,000 payable to a seller.
 
  TEA Group Incorporated and TeleStructures, Inc. (collectively, "TEA")
    On May 12, 1997, the Company acquired all of the common stock of TEA. TEA
provides telecommunications site selection, acquisition, design and development
services. The purchase price of $14,215,000 consisted of $8,120,000 in cash (of
which $2,001,000 was paid in 1996 as an option payment), promissory notes
payable to the former stockholders of TEA totaling $1,872,000, the assumption
of $1,973,000 in outstanding debt and 535,710 shares of the Company's Class B
 
                                      F-11
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
       CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
Common Stock valued at $2,250,000 (the estimated fair value of such common
stock on that date). The Company recognized goodwill of $9,568,000 in
connection with this acquisition. The Company repaid the promissory notes with
a portion of the proceeds from the issuance of its 10 5/8% Senior Discount
Notes (see Note 5).
 
  Crown Communications ("CCM"), Crown Network Systems, Inc. ("CNS") and
   Crown Mobile Systems, Inc. ("CMS") (collectively, "Crown")
    On July 11, 1997, the Company entered into an asset purchase and merger
agreement with the owners of Crown. On August 15, 1997, such agreement was
amended and restated, and the Company acquired (i) substantially all of the
assets, net of outstanding liabilities, of CCM and (ii) all of the outstanding
common stock of CNS and CMS. Crown provides network services, which includes
site selection and acquisition, antenna installation, site development and
construction, network design and site maintenance, and owns and operates
telecommunications towers and related assets. The purchase price of
$185,021,000 consisted of $27,843,000 in cash, a short-term promissory note
payable to the former owners of Crown for $76,230,000, the assumption of
$26,009,000 in outstanding debt and 7,325,000 shares of the Company's Class B
Common Stock valued at $54,939,000 (the estimated fair value of such common
stock on that date). The Company recognized goodwill and other intangible
assets of $146,103,000 in connection with this acquisition. The Company
financed the cash portion of the purchase price with proceeds from the
issuance of redeemable preferred stock (see Note 8), and repaid the promissory
note with proceeds from the issuance of additional redeemable preferred stock
and borrowings under the Senior Credit Facility (see Note 5).
 
    In 1997, the Company organized Crown Communication Inc. ("CCI," a Delaware
corporation) as a wholly owned subsidiary to own the net assets acquired from
CCM and the common stock of CNS and CMS. In January 1998, the Company merged
Castle Tower Corporation ("CTC," a wholly owned operating subsidiary) with and
into CCI, establishing CCI as the principal domestic operating subsidiary of
the Company.
 
  CTI
    On April 24, 1998, the Company entered into a share exchange agreement
with certain shareholders of CTI pursuant to which certain of CTI's
shareholders agreed to exchange their shares of CTI for shares of the Company.
On August 18, 1998, the exchange was consummated and the Company's ownership
of CTI increased from approximately 34.3% to 80%. The Company issued
20,867,700 shares of its Common Stock and 11,340,000 shares of its Class A
Common Stock, with such shares valued at an aggregate of $418,700,000 (based
on the price per share to the public in the Company's initial public offering
as discussed in Note 9). The Company recognized goodwill of $344,204,000 in
connection with this transaction, which was accounted for as an acquisition
using the purchase method. CTI's results of operations and cash flows are
included in the consolidated financial statements for the period subsequent to
the date the exchange was consummated.
 
  Pro Forma Results of Operations (Unaudited)
    The following unaudited pro forma summary presents consolidated results of
operations for the Company as if (i) the TEA and Crown acquisitions had been
consummated as of January 1, 1997 and (ii) the share exchange with CTI's
shareholders had been consummated as of January 1 for both 1997 and 1998.
Appropriate adjustments have been reflected for depreciation and amortization,
interest expense, amortization of deferred financing costs, income taxes and
certain nonrecurring
 
                                     F-12
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
income and expenses recorded by the Company in connection with the investment
in CTI in 1997 (see Note 4). The pro forma information does not necessarily
reflect the actual results that would have been achieved, nor is it necessarily
indicative of future consolidated results for the Company.
 
<TABLE>
<CAPTION>
                                                     Years Ended December 31,
                                                     --------------------------
                                                         1997          1998
                                                     ------------  ------------
                                                     (In thousands of dollars,
                                                     except per share amounts)
   <S>                                               <C>           <C>
   Net revenues..................................... $    180,936  $    210,041
   Net loss.........................................      (34,601)      (46,517)
   Loss per common share--basic and diluted.........        (0.60)        (0.72)
</TABLE>
 
  Agreement with Nextel Communications, Inc. ("Nextel")
    On July 11, 1997, the Company entered into an agreement with Nextel (the
"Nextel Agreement") whereby the Company has the option to purchase up to 50 of
Nextel's existing towers which are located in Texas, Florida and the
metropolitan areas of Denver, Colorado and Philadelphia, Pennsylvania. As of
February 24, 1999, the Company had purchased 49 of such towers for an aggregate
price of $11,019,000 in cash.
 
  Millennium Communications Limited ("Millennium")
    On October 8, 1998, the Company acquired all of the outstanding shares of
Millennium. Millennium develops, owns and operates telecommunications towers
and related assets in the United Kingdom. On the date of acquisition,
Millennium owned 102 tower sites. Millennium is being operated as a subsidiary
of CTI. The purchase price of $14,473,000 consisted of $9,813,000 in cash, the
repayment of $2,396,000 in outstanding debt and 358,678 shares of the Company's
common stock valued at $2,264,000 (the market value of such common stock on
that date).
 
  Agreement with Bell Atlantic Mobile ("BAM")
    On December 8, 1998, the Company entered into an agreement with BAM to form
a joint venture ("Crown Atlantic") to own and operate a significant majority of
BAM's towers. Upon formation of Crown Atlantic (which is currently expected to
occur in March 1999), (i) the Company will contribute to Crown Atlantic
$250,000,000 in cash and 15,575,046 shares of its Common Stock in exchange for
a 62.3% ownership interest in Crown Atlantic, (ii) Crown Atlantic will borrow
$180,000,000 under a committed $250,000,000 revolving credit facility, and
(iii) BAM will contribute to Crown Atlantic approximately 1,427 towers in
exchange for a cash distribution of $380,000,000 from Crown Atlantic and a
37.7% ownership interest in Crown Atlantic. Upon dissolution of Crown Atlantic,
BAM would receive (i) the shares of the Company's Common Stock contributed to
Crown Atlantic and (ii) a payment (either in cash or in shares of the Company's
Common Stock, at the Company's election) equal to 14.0% of the fair market
value of Crown Atlantic's other net assets; the Company would then receive the
remaining assets and liabilities of Crown Atlantic. The Company will account
for its investment in Crown Atlantic as an acquisition using the purchase
method, and will include Crown Atlantic's results of operations and cash flows
in the Company's consolidated financial statements for periods subsequent to
formation.
 
                                      F-13
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
3.Property and Equipment
 
    The major classes of property and equipment are as follows:
 
<TABLE>
<CAPTION>
                                                 Estimated    December 31,
                                                   Useful   -----------------
                                                   Lives     1997      1998
                                                 ---------- -------  --------
                                                  (In thousands of dollars)
   <S>                                           <C>        <C>      <C>
   Land and buildings........................... 0-50 years $ 1,930  $ 58,767
   Telecommunications towers and broadcast
    transmission equipment...................... 5-20 years  76,847   532,907
   Transportation and other equipment........... 3-10 years   4,379    11,452
   Office furniture and equipment...............  5-7 years   3,664    12,248
                                                            -------  --------
                                                             86,820   615,374
   Less: accumulated depreciation...............             (4,852)  (22,780)
                                                            -------  --------
                                                            $81,968  $592,594
                                                            =======  ========
</TABLE>
 
    Depreciation expense for the years ended December 31, 1997 and 1998 was
$2,886,000 and $20,638,000, respectively. Accumulated depreciation on
telecommunications towers and broadcast transmission equipment was $4,136,000
and $15,995,000 at December 31, 1997 and 1998, respectively. At December 31,
1998, minimum rentals receivable under existing operating leases for towers are
as follows: years ending December 31, 1999--$183,244,000; 2000--$187,311,000;
2001--$185,097,000; 2002--$179,641,000; 2003--$171,329,000; thereafter--
$667,731,000.
 
4.Investments in Affiliates
 
  Investment in CTI
    On February 28, 1997, the Company used a portion of the net proceeds from
the sale of the Series C Convertible Preferred Stock (see Note 8) to purchase
an ownership interest of approximately 34.3% in CTI (a company incorporated
under the laws of England and Wales). The Company led a consortium of investors
which provided the equity financing for CTI. The funds invested by the
consortium were used by CTI to purchase, through a wholly owned subsidiary, the
domestic broadcast transmission division of the British Broadcasting
Corporation (the "BBC"). The cost of the Company's investment in CTI amounted
to approximately $57,542,000. The Company accounted for its investment in CTI
utilizing the equity method of accounting prior to the consummation of the
share exchange agreement with CTI's shareholders in August 1998 (see Note 2).
 
    In March 1997, as compensation for leading the investment consortium, the
Company received a fee from CTI amounting to approximately $1,165,000. This fee
was recorded as other income by the Company when received. In addition, the
Company received approximately $1,679,000 from CTI as reimbursement for costs
incurred prior to the closing of the purchase from the BBC.
 
    In June 1997, as compensation for the successful completion of the
investment in CTI and certain other acquisitions and investments, the Company
paid bonuses to two of its executive officers totaling $913,000. These bonuses
are included in corporate development expenses on the Company's consolidated
statement of operations.
 
                                      F-14
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    Summarized financial information for CTI is as follows (for periods in
which the Company accounted for CTI utilizing the equity method):
 
<TABLE>
<CAPTION>
                                                                   December 31,
                                                                       1997
                                                                   -------------
                                                                   (In thousands
                                                                    of dollars)
                                                                   -------------
   <S>                                                             <C>
   Current assets................................................    $  37,510
   Property and equipment, net...................................      341,737
   Goodwill, net.................................................       76,029
                                                                     ---------
                                                                     $ 455,276
                                                                     =========
   Current liabilities...........................................    $  48,103
   Long-term debt................................................      237,299
   Other liabilities.............................................        3,453
   Redeemable preferred stock....................................      174,944
   Stockholders' equity (deficit)................................       (8,523)
                                                                     ---------
                                                                     $ 455,276
                                                                     =========
</TABLE>
 
<TABLE>
<CAPTION>
                                                       Ten Months
                                                         Ended     Eight Months
                                                      December 31, Ended August
                                                          1997       31, 1998
                                                      ------------ ------------
                                                      (In thousands of dollars)
   <S>                                                <C>          <C>
   Net revenues.....................................    $103,531     $97,228
   Operating expenses...............................      86,999      78,605
                                                        --------     -------
   Operating income.................................      16,532      18,623
   Interest and other income........................         553         725
   Interest expense and amortization of deferred
    financing costs.................................     (20,404)    (13,378)
   Provision for income taxes.......................          --          --
                                                        --------     -------
   Net income (loss)................................    $ (3,319)    $(5,970)
                                                        ========     =======
</TABLE>
 
5.Long-term Debt
 
    Long-term debt consists of the following:
<TABLE>
<CAPTION>
                                                           December 31,
                                                     -------------------------
                                                         1997         1998
                                                     ------------ ------------
                                                     (In thousands of dollars)
   <S>                                               <C>          <C>
   Senior Credit Facility........................... $      4,700 $      5,500
   10 5/8% Senior Discount Notes due 2007, net of
    discount........................................      151,593      168,099
   CTI Credit Facility..............................           --       55,177
   9% Guaranteed Bonds due 2007.....................           --      200,934
                                                     ------------ ------------
                                                     $    156,293 $    429,710
                                                     ============ ============
</TABLE>
 
  Senior Credit Facility
    CTC had a credit agreement with a bank (as amended, the "Bank Credit
Agreement") which consisted of secured revolving lines of credit (the
"Revolving Credit Facility") and a $2,300,000 term note (the "Term Note"). On
January 17, 1997, the Bank Credit Agreement was amended to: (i) increase the
available borrowings under the Revolving Credit Facility to $50,000,000; (ii)
repay the
 
                                      F-15
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
Term Note, along with accrued interest thereon, with borrowings under the
Revolving Credit Facility; and (iii) extend the termination date for the Bank
Credit Agreement to December 31, 2003. Available borrowings under the Revolving
Credit Facility were generally to be used to construct new towers and to
finance a portion of the purchase price for towers and related assets. The
amount of available borrowings was determined based on the current financial
performance (as defined) of: (i) the assets to be acquired; and (ii) assets
acquired in previous acquisitions. In addition, up to $5,000,000 of borrowing
availability under the Revolving Credit Facility could be used for letters of
credit.
 
    In October 1997, the Bank Credit Agreement was amended to (i) increase the
available borrowings to $100,000,000; (ii) include the lending bank under
Crown's bank credit agreement as a participating lender; and (iii) extend the
maturity date to December 31, 2004 (as amended, the "Senior Credit Facility").
On October 31, 1997, additional borrowings under the Senior Credit Facility,
along with the proceeds from the October issuance of Senior Preferred Stock
(see Note 8), were used to repay (i) the promissory note payable to the former
stockholders of Crown and (ii) the outstanding borrowings under Crown's bank
credit agreement (see Note 2). In November 1997, the Company repaid all of the
outstanding borrowings under the Senior Credit Facility with a portion of the
proceeds from the issuance of its 10 5/8% Senior Discount Notes (as discussed
below). Upon the merger of CTC into CCI in January 1998, CCI became the primary
borrower under the Senior Credit Facility. In December 1998, the Company again
repaid all of the outstanding borrowings under the Senior Credit Facility with
a portion of the proceeds from the issuance of its 12 3/4% Senior Exchangeable
Preferred Stock (see Note 8). As of December 31, 1998, approximately
$77,570,000 of borrowings was available under the Senior Credit Facility, of
which $5,000,000 was available for letters of credit. There were no letters of
credit outstanding as of December 31, 1998.
 
    The amount of available borrowings under the Senior Credit Facility will
decrease by $5,000,000 at the end of each calendar quarter beginning on March
31, 2001 until December 31, 2004, at which time any remaining borrowings must
be repaid. Under certain circumstances, CCI may be required to make principal
prepayments under the Senior Credit Facility in an amount equal to 50% of
excess cash flow (as defined), the net cash proceeds from certain asset sales
or the net cash proceeds from certain sales of equity or debt securities by the
Company.
 
    The Senior Credit Facility is secured by substantially all of the assets of
CCI and the Company's pledge of the capital stock of CCI and its subsidiaries.
In addition, the Senior Credit Facility is guaranteed by the Company.
Borrowings under the Senior Credit Facility bear interest at a rate per annum,
at the Company's election, equal to the bank's prime rate plus 1.5% or a
Eurodollar interbank offered rate (LIBOR) plus 3.25% (9.25% and 8.32%,
respectively, at December 31, 1998). The interest rate margins may be reduced
by up to 2.25% (non-cumulatively) based on a financial test, determined
quarterly. As of December 31, 1998, the financial test permitted a reduction of
1.5% in the interest rate margin for prime rate borrowings and 2.25% in the
interest rate margin for LIBOR borrowings. Interest on prime rate loans is due
quarterly, while interest on LIBOR loans is due at the end of the period (from
one to three months) for which such LIBOR rate is in effect. The Senior Credit
Facility requires CCI to maintain certain financial covenants and places
restrictions on CCI's ability to, among other things, incur debt and liens, pay
dividends, make capital expenditures, dispose of assets, undertake transactions
with affiliates and make investments.
 
  10 5/8% Senior Discount Notes due 2007 (the "Notes")
    On November 25, 1997, the Company issued $251,000,000 aggregate principal
amount of the Notes for cash proceeds of $150,010,000 (net of original issue
discount). The Company used a
 
                                      F-16
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
portion of the net proceeds from the sale of the Notes to (i) repay all of the
outstanding borrowings, including accrued interest thereon, under the Senior
Credit Facility; (ii) repay the promissory notes payable, including accrued
interest thereon, to the former stockholders of TEA (see Note 2); (iii) repay
certain indebtedness, including accrued interest thereon, from a prior
acquisition; and (iv) repay outstanding installment debt assumed in connection
with the Crown acquisition (see Note 2).
 
    The Notes will not pay any interest until May 15, 2003, at which time semi-
annual interest payments will commence and become due on each May 15 and
November 15 thereafter. The maturity date of the Notes is November 15, 2007.
The Notes are net of unamortized discount of $99,407,000 and $82,901,000 at
December 31, 1997 and 1998, respectively.
 
    The Notes are redeemable at the option of the Company, in whole or in part,
on or after November 15, 2002 at a price of 105.313% of the principal amount
plus accrued interest. The redemption price is reduced annually until November
15, 2005, after which time the Notes are redeemable at par. Prior to November
15, 2000, the Company may redeem up to 35% of the aggregate principal amount of
the Notes, at a price of 110.625% of the accreted value thereof, with the net
cash proceeds from a public offering of the Company's common stock.
 
    The Notes are senior indebtedness of the Company; however, they are
unsecured and effectively subordinate to the liabilities of the Company's
subsidiaries, which include outstanding borrowings under the Senior Credit
Facility, the CTI Credit Facility and the CTI Bonds. The indenture governing
the Notes (the "Indenture") places restrictions on the Company's ability to,
among other things, pay dividends and make capital distributions, make
investments, incur additional debt and liens, issue additional preferred stock,
dispose of assets and undertake transactions with affiliates. As of December
31, 1998, the Company was effectively precluded from paying dividends on its
capital stock under the terms of the Indenture.
 
  Reporting Requirements Under the Indenture (Unaudited)
    The following information (as such capitalized terms are defined in the
Indenture) is presented solely as a requirement of the Indenture; such
information is not intended as an alternative measure of financial position,
operating results or cash flow from operations (as determined in accordance
with generally accepted accounting principles). Furthermore, the Company's
measure of the following information may not be comparable to similarly titled
measures of other companies.
 
                                      F-17
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    Upon consummation of the share exchange with CTI's shareholders (see Note
2), which increased the Company's ownership interest in CTI to 80%, the Company
designated CTI as an Unrestricted Subsidiary. In addition, the net proceeds
from the Company's initial public offering of common stock (see Note 9) were
placed into a newly formed subsidiary that was also designated as an
Unrestricted Subsidiary. Prior to these transactions, the Company did not have
any Unrestricted Subsidiaries. Summarized financial information for (i) the
Company and its Restricted Subsidiaries and (ii) the Company's Unrestricted
Subsidiaries is as follows:
 
<TABLE>
<CAPTION>
                                             December 31, 1998
                            ----------------------------------------------------
                            Company and
                             Restricted  Unrestricted Consolidation Consolidated
                            Subsidiaries Subsidiaries Eliminations     Total
                            ------------ ------------ ------------- ------------
                                         (In thousands of dollars)
   <S>                      <C>          <C>          <C>           <C>
   Cash and cash
    equivalents............  $   41,785   $  254,665    $      --    $  296,450
   Other current assets....      19,585       26,081           --        45,666
   Property and equipment,
    net....................     165,205      427,389           --       592,594
   Investments in
    Unrestricted
    Subsidiaries...........     744,941           --     (744,941)           --
   Goodwill and other
    intangible assets,
    net....................     143,729      426,011           --       569,740
   Other assets, net.......      15,440        3,340           --        18,780
                             ----------   ----------    ---------    ----------
                             $1,130,685   $1,137,486    $(744,941)   $1,523,230
                             ==========   ==========    =========    ==========
   Current liabilities.....  $   17,653   $   75,234    $      --    $   92,887
   Long-term debt..........     173,599      256,111           --       429,710
   Other liabilities.......         808       22,015           --        22,823
   Minority interests......          --       39,185           --        39,185
   Redeemable preferred
    stock..................     201,063           --           --       201,063
   Stockholders' equity....     737,562      744,941     (744,941)      737,562
                             ----------   ----------    ---------    ----------
                             $1,130,685   $1,137,486    $(744,941)   $1,523,230
                             ==========   ==========    =========    ==========
</TABLE>
 
                                      F-18
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
<TABLE>
<CAPTION>
                          Three Months Ended December 31, 1998       Year Ended December 31, 1998
                         -------------------------------------- --------------------------------------
                         Company and                            Company and
                          Restricted  Unrestricted Consolidated  Restricted  Unrestricted Consolidated
                         Subsidiaries Subsidiaries    Total     Subsidiaries Subsidiaries    Total
                         ------------ ------------ ------------ ------------ ------------ ------------
                                                   (In thousands of dollars)
<S>                      <C>          <C>          <C>          <C>          <C>          <C>
Net revenues............   $ 17,030     $43,787      $60,817      $ 55,023     $58,055      $113,078
Costs of operations
 (exclusive of
 depreciation and
 amortization)..........      7,069      18,117       25,186        23,446      24,372        47,818
General and
 administrative.........      6,883       1,666        8,549        21,153       2,418        23,571
Corporate development...      1,787          --        1,787         4,625          --         4,625
Non-cash compensation
 charges................        523         874        1,397         9,907       2,851        12,758
Depreciation and
 amortization...........      4,879      15,255       20,134        16,921      20,318        37,239
                           --------     -------      -------      --------     -------      --------
Operating income
 (loss).................     (4,111)      7,875        3,764       (21,029)      8,096       (12,933)
Equity in earnings of
 unconsolidated
 affiliate..............         --          --           --         2,055          --         2,055
Interest and other
 income (expense).......       (285)      2,212        1,927         1,101       3,119         4,220
Interest expense and
 amortization of
 deferred financing
 costs..................     (5,823)     (5,685)     (11,508)      (21,727)     (7,362)      (29,089)
Provision for income
 taxes                         (156)         --         (156)         (374)         --          (374)
Minority interests......         --      (1,326)      (1,326)           --      (1,654)       (1,654)
                           --------     -------      -------      --------     -------      --------
Net loss................   $(10,375)    $ 3,076      $(7,299)     $(39,974)    $ 2,199      $(37,775)
                           ========     =======      =======      ========     =======      ========
</TABLE>
 
    Tower Cash Flow and Adjusted Consolidated Cash Flow for the Company and its
Restricted Subsidiaries is as follows:
 
<TABLE>
<CAPTION>
                                                                        (In
                                                                     thousands
                                                                        of
                                                                     dollars)
                                                                     ---------
   <S>                                                               <C>
   Tower Cash Flow, for the three months ended December 31, 1998.... $  3,868
                                                                     ========
   Consolidated Cash Flow, for the twelve months ended December 31,
    1998............................................................ $  6,001
   Less: Tower Cash Flow, for the twelve months ended December 31,
    1998............................................................  (14,811)
   Plus: four times Tower Cash Flow, for the three months ended
    December 31, 1998...............................................   15,472
                                                                     --------
   Adjusted Consolidated Cash Flow, for the twelve months ended
    December 31, 1998............................................... $  6,662
                                                                     ========
</TABLE>
 
                                      F-19
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
  CTI Credit Facility
    CTI has a credit agreement with a syndicate of banks (as amended, the "CTI
Credit Facility") which consists of a (Pounds)64,000,000 (approximately
$106,419,000) secured revolving line of credit. Available borrowings under the
CTI Credit Facility are generally to be used to finance capital expenditures
and for working capital and general corporate purposes. As of December 31,
1998, approximately $51,243,000 of borrowings was available under the CTI
Credit Facility.
 
    The loan commitment under the CTI Credit Facility will be automatically
reduced to zero in three equal semi-annual installments beginning on May 31,
2001 until May 31, 2002, when the CTI Credit Facility matures. Under certain
circumstances, CTI may be required to make principle prepayments from the
proceeds of certain asset sales.
 
    The CTI Credit Facility is secured by substantially all of CTI's assets.
Borrowings under the CTI Credit Facility bear interest at a rate per annum
equal to a Eurodollar interbank offered rate (LIBOR) plus 0.85% (approximately
6.99% at December 31, 1998). Interest is due at the end of the period (from one
to six months) for which such LIBOR rate is in effect. The CTI Credit Facility
requires CTI to maintain certain financial covenants and places restrictions on
CTI's ability to, among other things, incur debt and liens, pay dividends, make
capital expenditures, dispose of assets, undertake transactions with affiliates
and make investments.
 
  9% Guaranteed Bonds due 2007 ("CTI Bonds")
    CTI has issued (Pounds)125,000,000 (approximately $207,850,000) aggregate
principal amount of the CTI Bonds. Interest payments on the CTI Bonds are due
annually on each March 30. The maturity date of the CTI Bonds is March 30,
2007. The CTI Bonds are stated net of unamortized discount.
 
    The CTI Bonds are redeemable, at the option of CTI, in whole or in part at
any time, at the greater of their principal amount and such a price as will
provide a gross redemption yield 0.5% per annum above the gross redemption
yield on the benchmark gilt plus, in either case, accrued and unpaid interest.
Under certain circumstances, each holder of the CTI Bonds has the right to
require CTI to repurchase all or a portion of such holder's CTI Bonds at a
price equal to 101% of their aggregate principal amount plus accrued and unpaid
interest.
 
    The CTI Bonds are guaranteed by CTI; however, they are unsecured and
effectively subordinate to the outstanding borrowings under the CTI Credit
Facility. The trust deed governing the CTI Bonds places restrictions on CTI's
ability to, among other things, pay dividends and make capital distributions,
make investments, incur additional debt and liens, dispose of assets and
undertake transactions with affiliates.
 
  Restricted Net Assets of Subsidiaries
    Under the terms of the Senior Credit Facility, the CTI Credit Facility and
the CTI Bonds, the Company's subsidiaries are limited in the amount of
dividends which can be paid to the Company. For CCI, the amount of such
dividends is limited to (i) $6,000,000 per year until October 31, 2002, and
$33,000,000 per year thereafter, and (ii) an amount to pay income taxes
attributable to the Company's Restricted Subsidiaries. CTI is effectively
precluded from paying dividends. The restricted net assets of the Company's
subsidiaries totaled approximately $826,321,000 at December 31, 1998.
 
  Interest Rate Swap Agreement
    The interest rate swap agreement had an outstanding notional amount of
$17,925,000 at January 29, 1997 (inception) and terminated on February 24,
1999. The Company paid a fixed rate
 
                                      F-20
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
of 6.28% on the notional amount and received a floating rate based on LIBOR.
This agreement effectively changed the interest rate on $17,925,000 of
borrowings under the Senior Credit Facility from a floating rate to a fixed
rate of 6.28% plus the applicable margin. The Company does not believe there is
any significant exposure to credit risk due to the creditworthiness of the
counterparty. In the event of nonperformance by the counterparty, the Company's
loss would be limited to any unfavorable interest rate differential.
 
6.Income Taxes
 
    The provision for income taxes consists of the following:
 
<TABLE>
<CAPTION>
                                                       Years Ended December
                                                               31,
                                                      ------------------------
                                                      1996    1997      1998
                                                      -----  -------  --------
                                                         (In thousands of
                                                             dollars)
   <S>                                                <C>    <C>      <C>
   Current:
     State..........................................  $  --  $    --  $    365
     Puerto Rico....................................     10       49         9
                                                      -----  -------  --------
                                                      $  10  $    49  $    374
                                                      =====  =======  ========
 
    A reconciliation between the provision for income taxes and the amount
computed by applying the federal statutory income tax rate to the loss before
income taxes is as follows:
 
<CAPTION>
                                                       Years Ended December
                                                               31,
                                                      ------------------------
                                                      1996    1997      1998
                                                      -----  -------  --------
                                                         (In thousands of
                                                             dollars)
   <S>                                                <C>    <C>      <C>
   Benefit for income taxes at statutory rate.......  $(322) $(4,044) $(12,154)
   Stock-based compensation.........................     --       --     2,844
   Amortization of intangible assets................     --      478       604
   State and foreign taxes, net of federal tax
    benefit.........................................     --       --       247
   Expenses for which no federal tax benefit was
    recognized......................................      5       28       151
   Puerto Rico taxes................................     10       49         9
   Acquisition costs................................     --       --      (675)
   Foreign earnings not subject to tax..............     --       --      (584)
   Changes in valuation allowances..................    315    3,650     9,944
   Other............................................      2     (112)      (12)
                                                      -----  -------  --------
                                                      $  10  $    49  $    374
                                                      =====  =======  ========
</TABLE>
 
                                      F-21
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    The components of the net deferred income tax assets and liabilities are as
follows:
 
<TABLE>
<CAPTION>
                                         December 31,
                                --------------------------------
                                    1997          1998
                                ------------  -------------
                                (In thousands of dollars)
   <S>                          <C>           <C>            <C>
   Deferred income tax
    liabilities:
     Property and equipment.... $      2,487  $       6,045
     Puerto Rico earnings......           75             84
     Intangible assets.........          276             --
     Other.....................           38             --
                                ------------  -------------
       Total deferred income
        tax liabilities........        2,876          6,129
                                ------------  -------------
   Deferred income tax assets:
     Net operating loss
      carryforwards............        6,800         19,071
     Noncompete agreement......           37            464
     Intangible assets.........           --            351
     Accrued liabilities.......           --             68
     Other.....................           --             45
     Receivables allowance.....            6             41
     Valuation allowances......       (3,967)       (13,911)
                                ------------  -------------
       Total deferred income
        tax assets, net........        2,876          6,129
                                ------------  -------------
   Net deferred income tax
   liabilities................. $         --  $          --
                                ============  =============
</TABLE>
 
    Valuation allowances of $3,967,000 and $13,911,000 were recognized to
offset net deferred income tax assets as of December 31, 1997 and 1998,
respectively.
 
    At December 31, 1998, the Company has net operating loss carryforwards of
approximately $56,000,000 which are available to offset future federal taxable
income. These loss carryforwards will expire in 2010 through 2018. The
utilization of the loss carryforwards is subject to certain limitations.
 
7.Minority Interests
 
    Minority interests represent the minority stockholder's interest in CTI.
 
8.Redeemable Preferred Stock
 
  Exchangeable Preferred Stock
    On December 16, 1998, the Company issued 200,000 shares of its 12 3/4%
Senior Exchangeable Preferred Stock due 2010 (the "Exchangeable Preferred
Stock") at a price of $1,000 per share (the liquidation preference per share).
The net proceeds received by the Company from the sale of such shares amounted
to approximately $193,000,000 (after underwriting discounts of $7,000,000 but
before other expenses of the offering, which amounted to approximately
$8,059,000). A portion of the net proceeds was used to repay outstanding
borrowings under the Senior Credit Facility of $73,750,000, and the remaining
net proceeds are currently invested in short-term investments.
 
    The holders of the Exchangeable Preferred Stock are entitled to receive
cumulative dividends at the rate of 12 3/4% per share, compounded quarterly on
each March 15, June 15, September 15 and
 
                                      F-22
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
December 15 of each year, beginning on March 15, 1999. On or before December
15, 2003, the Company has the option to pay dividends in cash or in additional
shares of Exchangeable Preferred Stock. After December 15, 2003, dividends are
payable only in cash.
 
    The Company is required to redeem all outstanding shares of Exchangeable
Preferred Stock on December 15, 2010 at a price equal to the liquidation
preference plus accumulated and unpaid dividends. On or after December 15,
2003, the shares are redeemable at the option of the Company, in whole or in
part, at a price of 106.375% of the liquidation preference. The redemption
price is reduced on an annual basis until December 15, 2007, at which time the
shares are redeemable at the liquidation preference. Prior to December 15,
2001, the Company may redeem up to 35% of the Exchangeable Preferred Stock, at
a price of 112.75% of the liquidation preference, with the net proceeds from
certain public equity offerings. The shares of Exchangeable Preferred Stock are
exchangeable, at the option of the Company, in whole but not in part, for 12
3/4% Senior Subordinated Exchange Debentures due 2010.
 
    The Company's obligations with respect to the Exchangeable Preferred Stock
are subordinate to all indebtedness of the Company (including the Notes), and
are effectively subordinate to all debt and liabilities of the Company's
subsidiaries (including the Senior Credit Facility, the CTI Credit Facility and
the CTI Bonds). The certificate of designations governing the Exchangeable
Preferred Stock places restrictions on the Company's ability to, among other
things, pay dividends and make capital distributions, make investments, incur
additional debt and liens, issue additional preferred stock, dispose of assets
and undertake transactions with affiliates.
 
  Senior Preferred Stock
    In August 1997, the Company issued 292,995 shares of its Senior Convertible
Preferred Stock (the "Senior Preferred Stock") at a price of $100 per share.
The net proceeds received by the Company from the sale of such shares amounted
to approximately $29,266,000, most of which was used to pay the cash portion of
the purchase price for Crown (see Note 2). In October 1997, the Company issued
an additional 364,500 shares of its Senior Preferred Stock at a price of $100
per share. The net proceeds received by the Company from the sale of such
shares amounted to $36,450,000. This amount, along with borrowings under the
Senior Credit Facility, was used to repay the promissory note from the Crown
acquisition (see Note 2).
 
    The holders of the Senior Preferred Stock were entitled to receive
cumulative dividends at the rate of 12.5% per share, compounded annually. At
the option of the holder, each share of Senior Preferred Stock (plus any
accrued and unpaid dividends) was convertible, at any time, into shares of the
Company's common stock at a conversion price of $7.50 (subject to adjustment in
the event of an underwritten public offering of the Company's common stock). At
the date of issuance of the Senior Preferred Stock, the Company believes that
its conversion price represented the estimated fair value of the common stock
on that date. In July 1998, all of the shares of Senior Preferred Stock were
converted into shares of common stock (see Note 9).
 
    The purchasers of the Senior Preferred Stock were also issued warrants to
purchase an aggregate 1,314,990 shares of the Company's common stock at an
exercise price of $7.50 per share (subject to adjustment in the event of an
underwritten public offering of the Company's common stock). The warrants are
exercisable, in whole or in part, at any time until August and October of 2007.
At the date of issuance of the warrants, the Company believes that the exercise
price represented the estimated fair value of the common stock on that date. As
such, the Company has not assigned any value to the warrants in its
consolidated financial statements.
 
                                      F-23
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    Series Preferred Stock
    The holders of the Company's Series A Convertible Preferred Stock (the
"Series A Preferred Stock"), the Series B Convertible Preferred Stock (the
"Series B Preferred Stock") and the Series C Convertible Preferred Stock (the
"Series C Preferred Stock") (collectively, the "Series Preferred Stock") were
entitled to receive dividends, if and when declared, at the same rate as
dividends were declared and paid with respect to the Company's common stock.
Each of the outstanding shares of Series Preferred Stock was automatically
converted into five shares of common stock upon consummation of the Company's
initial public offering (see Note 9).
 
    In February and April of 1997, the Company issued 3,529,832 shares of its
Series C Preferred Stock at a price of $21.00 per share. The net proceeds
received by the Company from the sale of the Series C Preferred Stock amounted
to approximately $74,024,000. A portion of this amount was used to purchase the
ownership interest in CTI (see Note 4).
 
9.Stockholders' Equity
 
    Common Stock
    On August 18, 1998, the Company consummated its initial public offering of
common stock at a price to the public of $13 per share (the "IPO"). The Company
sold 12,320,000 shares of its common stock and received proceeds of
$151,043,000 (after underwriting discounts of $9,117,000 but before other
expenses of the IPO, which amounted to approximately $4,116,000). The net
proceeds from the IPO are currently invested in short-term investments.
 
    In anticipation of the IPO, the Company (i) amended and restated the 1995
Stock Option Plan to, among other things, authorize the issuance of up to
18,000,000 shares of common stock pursuant to awards made thereunder and (ii)
approved an amendment to its certificate of incorporation to increase the
number of authorized shares of common and preferred stock to 690,000,000 shares
and 10,000,000 shares, respectively, and to effect a five-for-one stock split
for the shares of common stock then outstanding. The effect of the stock split
has been presented retroactively in the Company's consolidated financial
statements for all periods presented.
 
    In July 1998, all of the holders of the Company's Senior Convertible
Preferred Stock converted such shares into an aggregate of 9,629,200 shares of
the Company's common stock. Upon consummation of the IPO, all of the holders of
the Company's then-existing shares of Class A Common Stock, Class B Common
Stock, Series A Convertible Preferred Stock, Series B Convertible Preferred
Stock and Series C Convertible Preferred Stock converted such shares into an
aggregate of 39,842,290 shares of the Company's common stock.
 
    In March 1997, the Company repurchased, and subsequently retired, 814,790
shares of its common stock from a member of the Company's Board of Directors at
a cost of approximately $3,422,000. Of this amount, $1,311,000 was recorded as
compensation cost and is included in corporate development expense on the
Company's consolidated statement of operations. In August 1998, the Company
repurchased, and subsequently retired, 141,070 shares of its common stock from
a former employee at a cost of approximately $883,000.
 
    Class A Common Stock
    Upon consummation of the share exchange agreement with CTI's shareholders
(see Note 2), an affiliate of CTI's remaining minority shareholder received all
of the currently outstanding shares of the Company's Class A Common Stock. Each
share of Class A Common Stock is convertible, at the
 
                                      F-24
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
option of its holder at any time, into one share of Common Stock. The holder of
the Class A Common Stock is entitled to one vote per share on all matters
presented to a vote of the Company's shareholders, except with respect to the
election of directors. The holder of the Class A Common Stock, voting as a
separate class, has the right to elect up to two members of the Company's Board
of Directors. The shares of Class A Common Stock also provide certain
governance and anti-dilutive rights.
 
    Compensation Charges Related to Stock Option Grants
    During the period from April 24, 1998 through July 15, 1998, the Company
granted options to employees and executives for the purchase of 3,236,980
shares of its common stock at an exercise price of $7.50 per share. Of such
options, options for 1,810,730 shares vested upon consummation of the IPO and
the remaining options for 1,426,250 shares will vest at 20% per year over five
years, beginning one year from the date of grant. In addition, the Company has
assigned its right to repurchase shares of its common stock from a stockholder
(at a price of $6.26 per share) to two individuals (including a newly-elected
director) with respect to 100,000 of such shares. Since the granting of these
options and the assignment of these rights to repurchase shares occurred
subsequent to the date of the share exchange agreement with CTI's shareholders
and at prices substantially below the price to the public in the IPO, the
Company has recorded a non-cash compensation charge related to these options
and shares based upon the difference between the respective exercise and
purchase prices and the price to the public in the IPO. Such compensation
charge will total approximately $18.4 million, of which approximately $10.6
million was recognized upon consummation of the IPO (for such options and
shares which vested upon consummation of the IPO), and the remaining $7.8
million is being recognized over five years (approximately $1.6 million per
year) through the second quarter of 2003. An additional $1.6 million in non-
cash compensation charges will be recognized through the third quarter of 2001
for stock options issued to certain members of CTI's management prior to the
consummation of the share exchange.
 
    Stock Options
    In 1995, the Company adopted the Crown Castle International Corp. 1995
Stock Option Plan (as amended, the "1995 Stock Option Plan"). Up to 18,000,000
shares of the Company's common stock were reserved for awards granted to
certain employees, consultants and non-employee directors of the Company and
its subsidiaries or affiliates. These options generally vest over periods of up
to five years from the date of grant (as determined by the Company's Board of
Directors) and have a maximum term of ten years from the date of grant.
 
    Upon consummation of the share exchange agreement with CTI's shareholders
(see Note 2), the Company adopted each of the various CTI stock option plans.
All outstanding options to purchase shares of CTI under such plans have been
converted into options to purchase shares of the Company's common stock. Up to
4,392,451 shares of the Company's common stock were reserved for awards granted
under the CTI plans, and these options generally vest over periods of up to
three years from the date of grant.
 
                                      F-25
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    A summary of awards granted under the various stock option plans is as
follows for the years ended December 31, 1996, 1997 and 1998:
 
<TABLE>
<CAPTION>
                                   1996                1997                  1998
                            ------------------- -------------------- ---------------------
                                      Weighted-            Weighted-             Weighted-
                                       Average              Average               Average
                            Number of Exercise  Number of  Exercise  Number of   Exercise
                             Shares     Price    Shares      Price     Shares      Price
                            --------- --------- ---------  --------- ----------  ---------
   <S>                      <C>       <C>       <C>        <C>       <C>         <C>
   Options outstanding at
    beginning of year......   825,000   $0.53   1,050,000    $0.89    3,694,375    $4.69
   Options granted.........   225,000    2.22   3,042,500     5.46    9,024,720    10.02
   Options outstanding
    under CTI stock option
    plans..................        --      --          --       --    4,367,202     2.74
   Options exercised.......        --      --    (363,125)    0.53     (216,650)    4.89
   Options forfeited.......        --      --     (35,000)    1.20     (284,450)    5.72
                            ---------           ---------            ----------
   Options outstanding at
    end of year............ 1,050,000    0.89   3,694,375     4.69   16,585,197     7.06
                            =========           =========            ==========
   Options exercisable at
    end of year............   721,250    0.43     728,875     2.49    7,615,649     4.75
                            =========           =========            ==========
</TABLE>
 
    In November 1996, options which were granted in 1995 for the purchase of
690,000 shares were modified such that those options became fully vested. In
August 1998, certain outstanding options became fully or partially vested upon
consummation of the IPO. A summary of options outstanding as of December 31,
1998 is as follows:
 
<TABLE>
<CAPTION>
                                                      Weighted-
                                                       Average
                              Number of               Remaining               Number of
         Exercise              Options               Contractual               Options
          Prices             Outstanding                Life                 Exercisable
         --------            -----------             -----------             -----------
     <S>                     <C>                     <C>                     <C>
     $  -0- to $ 0.40           677,108               7.0 years                 494,709
       1.20 to   1.60           123,750               7.1 years                 123,750
       2.37 to   3.09         3,316,600               7.8 years               2,266,600
       4.01 to   6.00         2,607,621               8.2 years               1,833,960
       7.50 to   7.77         5,694,692               9.3 years               2,821,630
      10.04 to  12.50           450,426               9.9 years                      --
                13.00         3,590,000               9.6 years                  75,000
                17.63           125,000              10.0 years                      --
                             ----------                                       ---------
                             16,585,197               9.1 years               7,615,649
                             ==========                                       =========
</TABLE>
 
                                      F-26
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    The weighted-average fair value of options granted during the years ended
December 31, 1996, 1997 and 1998 was $0.50, $1.30 and $4.54, respectively. The
fair value of each option was estimated on the date of grant using the Black-
Scholes option-pricing model and the following weighted-average assumptions
about the options (the minimum value method was used prior to the IPO):
 
<TABLE>
<CAPTION>
                                                  Years Ended December 31,
                                                -------------------------------
                                                  1996       1997       1998
                                                ---------  ---------  ---------
   <S>                                          <C>        <C>        <C>
   Risk-free interest rate.....................       6.4%       6.1%      5.38%
   Expected life............................... 4.0 years  4.5 years  3.6 years
   Expected volatility.........................         0%         0%  0% to 30%
   Expected dividend yield.....................         0%         0%         0%
</TABLE>
 
    The exercise prices for options granted during the years ended December
31, 1996 and 1997 were equal to or in excess of the estimated fair value of
the Company's common stock at the date of grant. As such, no compensation cost
was recognized for stock options during those years (see Note 1 and
"Compensation Charges Related to Stock Option Grants"). If compensation cost
had been recognized for stock options based on their fair value at the date of
grant, the Company's pro forma net loss for the years ended December 31, 1996,
1997 and 1998 would have been $973,000 ($0.28 per share), $12,586,000 ($2.37
per share) and $75,660,000 ($1.91 per share), respectively. The pro forma
effect of stock options on the Company's net loss for those years may not be
representative of the pro forma effect for future years due to the impact of
vesting and potential future awards.
 
  Shares Reserved For Issuance
    At December 31, 1998, the Company had the following shares reserved for
future issuance:
 
<TABLE>
   <S>                                                               <C>
   Common Stock:
     Class A Common Stock........................................... 11,340,000
     Shares of CTI stock which are convertible into common stock.... 17,443,500
     Stock option plans............................................. 21,812,676
     Warrants.......................................................  1,314,990
                                                                     ----------
                                                                     51,911,166
                                                                     ==========
</TABLE>
 
10.Employee Benefit Plans
 
    The Company and its subsidiaries have various defined contribution savings
plans covering substantially all employees. Depending on the plan, employees
may elect to contribute up to 20% of their eligible compensation. Certain of
the plans provide for partial matching of such contributions. The cost to the
Company for these plans amounted to $98,000 and $197,000 for the years ended
December 31, 1997 and 1998, respectively.
 
    CTI has a defined benefit plan which covers all of its employees hired on
or before March 1, 1997. Employees hired after that date are not eligible to
participate in this plan. The net periodic pension cost attributable to this
plan for the four months ended December 31, 1998 was $1,115,000. As of
December 31, 1998, (i) the accumulated benefit obligation under this plan
amounted to $13,635,000 (all of which was vested); (ii) the projected benefit
obligation amounted to $15,298,000; (iii) the fair value of the plan's assets
amounted to $15,848,000; and (iv) the prepaid pension cost attributable to
this plan amounted to $1,704,000.
 
                                     F-27
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
11. Related Party Transactions
 
    The Company leases office space in a building formerly owned by its Chief
Executive Officer. Lease payments for such office space amounted to $50,000 and
$130,000 for the years ended December 31, 1996 and 1997, respectively.
 
    Included in other receivables at December 31, 1997 and 1998 are amounts due
from employees of the Company totaling $499,000 and $368,000, respectively.
 
12. Commitments and Contingencies
 
    At December 31, 1998, minimum rental commitments under operating leases are
as follows: years ending December 31, 1999--$19,721,000; 2000--$19,456,000;
2001--$19,298,000; 2002--$19,293,000; 2003--$18,996,000; thereafter--
$112,848,000. Rental expense for operating leases was $277,000, $1,712,000 and
$9,620,000 for the years ended December 31, 1996, 1997 and 1998, respectively.
 
    The Company is involved in various claims, lawsuits and proceedings arising
in the ordinary course of business. While there are uncertainties inherent in
the ultimate outcome of such matters and it is impossible to presently
determine the ultimate costs that may be incurred, management believes the
resolution of such uncertainties and the incurrence of such costs should not
have a material adverse effect on the Company's consolidated financial position
or results of operations.
 
13. Operating Segments and Concentrations of Credit Risk
 
    Operating Segments
    The Company's reportable operating segments for 1998 are (i) the domestic
operations of CCI and (ii) the United Kingdom operations of CTI. Financial
results for the Company are reported to management and the Board of Directors
in this manner, and much of the Company's current debt financing is structured
along these geographic lines. In addition, the Company's financial performance
is evaluated by outside securities analysts based on these operating segments.
See Note 1 for a description of the primary revenue sources from these two
segments.
 
    As discussed in Note 2, CTI's results of operations are included in the
Company's consolidated financial statements beginning in 1998. Prior to that
time, the domestic operations of CCI represented the Company's only reportable
segment.
 
                                      F-28
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    The measurement of profit or loss currently used to evaluate the results of
operations for the Company and its operating segments is earnings before
interest, taxes, depreciation and amortization ("EBITDA"). The Company defines
EBITDA as operating income (loss) plus depreciation and amortization and non-
cash compensation charges. EBITDA is not intended as an alternative measure of
operating results or cash flow from operations (as determined in accordance
with generally accepted accounting principles), and the Company's measure of
EBITDA may not be comparable to similarly titled measures of other companies.
There are no significant revenues resulting from transactions between the
Company's operating segments. Total assets for the Company's operating segments
are determined based on the separate consolidated balance sheets for CCI and
CTI. The results of operations and financial position for CTI reflect
appropriate adjustments for their presentation in accordance with generally
accepted accounting principles in the United States. The financial results for
the Company's operating segments are as follows:
 
<TABLE>
<CAPTION>
                                          Year Ended December 31, 1998
                                    -------------------------------------------
                                                        Corporate
                                                         Office    Consolidated
                                      CCI       CTI     and Other     Total
                                    --------  --------  ---------  ------------
                                           (In thousands of dollars)
<S>                                 <C>       <C>       <C>        <C>
Net revenues:
 Site rental and broadcast
  transmission....................  $ 22,541  $ 52,487  $     --    $   75,028
 Network services and other.......    31,471     5,568     1,011        38,050
                                    --------  --------  --------    ----------
                                      54,012    58,055     1,011       113,078
                                    --------  --------  --------    ----------
Costs of operations (exclusive of
 depreciation and amortization)...    23,076    24,372       370        47,818
General and administrative........    17,929     2,418     3,224        23,571
Corporate development.............        --        --     4,625         4,625
                                    --------  --------  --------    ----------
EBITDA............................    13,007    31,265    (7,208)       37,064
Non-cash compensation charges.....       132     2,851     9,775        12,758
Depreciation and amortization.....    16,202    20,318       719        37,239
                                    --------  --------  --------    ----------
Operating income (loss)...........    (3,327)    8,096   (17,702)      (12,933)
Equity in earnings of
 unconsolidated affiliate                 --        --     2,055         2,055
Interest and other income
 (expense)........................      (253)      294     4,179         4,220
Interest expense and amortization
 of deferred financing costs......    (4,476)   (7,362)  (17,251)      (29,089)
Provision for income taxes........      (374)       --        --          (374)
Minority interests................        --    (1,654)       --        (1,654)
                                    --------  --------  --------    ----------
Net loss..........................  $ (8,430) $   (626) $(28,719)   $  (37,775)
                                    ========  ========  ========    ==========
Capital expenditures..............  $ 84,911  $ 50,224  $  3,624    $  138,759
                                    ========  ========  ========    ==========
Total assets (at year end)........  $332,555  $887,938  $302,737    $1,523,230
                                    ========  ========  ========    ==========
Investments in affiliates (at year
 end).............................  $     --  $     --  $  2,258    $    2,258
                                    ========  ========  ========    ==========
</TABLE>
 
                                      F-29
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
<TABLE>
<CAPTION>
                                            Years Ended December 31,
                         -----------------------------------------------------------------
                                      1996                            1997
                         ------------------------------- ---------------------------------
                                  Corporate                        Corporate
                                   Office   Consolidated            Office    Consolidated
                           CCI    and Other    Total       CCI     and Other     Total
                         -------  --------- ------------ --------  ---------  ------------
                                           (In thousands of dollars)
<S>                      <C>      <C>       <C>          <C>       <C>        <C>
Net revenues:
  Site rental and
   broadcast
   transmission......... $ 5,615   $    --    $ 5,615    $ 11,010  $     --     $ 11,010
  Network services and
   other................     592        --        592      20,066       329       20,395
                         -------   -------    -------    --------  --------     --------
                           6,207        --      6,207      31,076       329       31,405
                         -------   -------    -------    --------  --------     --------
Costs of operations
 (exclusive of
 depreciation and
 amortization)..........   1,300        --      1,300      15,350        --       15,350
General and
 administrative.........   1,678        --      1,678       6,675       149        6,824
Corporate development...      75     1,249      1,324       1,864     3,867        5,731
                         -------   -------    -------    --------  --------     --------
EBITDA..................   3,154    (1,249)     1,905       7,187    (3,687)       3,500
Depreciation and
 amortization              1,242        --      1,242       6,925        27        6,952
                         -------   -------    -------    --------  --------     --------
Operating income
 (loss).................   1,912    (1,249)       663         262    (3,714)      (3,452)
Equity in earnings
 (losses) of
 unconsolidated
 affiliate..............      --        --         --          --    (1,138)      (1,138)
Interest and other
 income (expense).......      22       171        193         (77)    2,028        1,951
Interest expense and
 amortization of
 deferred financing
 costs..................  (1,803)       --     (1,803)     (4,660)   (4,594)      (9,254)
Credit (provision) for
 income taxes...........     (59)       49        (10)         --       (49)         (49)
                         -------   -------    -------    --------  --------     --------
Net income (loss)....... $    72   $(1,029)   $  (957)   $ (4,475) $ (7,467)    $(11,942)
                         =======   =======    =======    ========  ========     ========
Capital expenditures.... $   890   $    --    $   890    $ 17,200  $    835     $ 18,035
                         =======   =======    =======    ========  ========     ========
Total assets (at year
 end)...................                                 $250,911  $120,480     $371,391
                                                         ========  ========     ========
Investments in
 affiliates (at year
 end)...................                                 $     --  $ 59,082     $ 59,082
                                                         ========  ========     ========
</TABLE>
 
                                      F-30
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
<TABLE>
<S>  <C> <C> <C> <C> <C> <C>
                 === === ===
</TABLE>
 
     Geographic Information
      A summary of net revenues by country, based on the location of the
  Company's subsidiary, is as follows:
 
<TABLE>
<CAPTION>
                                                         Years Ended December
                                                                  31,
                                                        -----------------------
                                                         1996   1997     1998
                                                        ------ ------- --------
                                                           (In thousands of
                                                               dollars)
      <S>                                               <C>    <C>     <C>
      United States.................................... $5,050 $29,076 $ 51,807
      Puerto Rico......................................  1,157   2,329    2,470
                                                        ------ ------- --------
        Total domestic operations......................  6,207  31,405   54,277
                                                        ------ ------- --------
      United Kingdom...................................     --      --   58,055
      Other foreign countries..........................     --      --      746
                                                        ------ ------- --------
        Total for all foreign countries................     --      --   58,801
                                                        ------ ------- --------
                                                        $6,207 $31,405 $113,078
                                                        ====== ======= ========
</TABLE>
 
      A summary of long-lived assets by country of location is as follows:
 
<TABLE>
<CAPTION>
                                                               December 31,
                                                            -------------------
                                                              1997      1998
                                                            -------- ----------
                                                             (In thousands of
                                                                 dollars)
      <S>                                                   <C>      <C>
      United States........................................ $237,125 $  310,953
      Puerto Rico..........................................   10,145     14,473
                                                            -------- ----------
        Total domestic operations..........................  247,270    325,426
                                                            -------- ----------
      United Kingdom.......................................   56,965    855,560
      Other foreign countries..............................       --        128
                                                            -------- ----------
        Total for all foreign countries....................   56,965    855,688
                                                            -------- ----------
                                                            $304,235 $1,181,114
                                                            ======== ==========
</TABLE>
 
     Major Customers
      For the years ended December 31, 1996, 1997 and 1998, CCI had revenues
  from a single customer amounting to $2,634,000, $5,998,000 and
  $14,168,000, respectively. For the year ended December 31, 1998,
  consolidated net revenues includes $33,044,000 from a single customer of
  CTI.
 
     Concentrations of Credit Risk
      Financial instruments that potentially subject the Company to
  concentrations of credit risk are primarily cash and cash equivalents and
  trade receivables. The Company mitigates its risk with respect to cash and
  cash equivalents by maintaining such deposits at high credit quality
  financial institutions and monitoring the credit ratings of those
  institutions.
 
      The Company derives the largest portion of its revenues from customers
  in the wireless telecommunications industry. In addition, the Company has
  concentrations of operations in certain geographic areas (primarily the
  United Kingdom, Pennsylvania, Texas, New Mexico, Arizona and Puerto Rico).
  The Company mitigates its concentrations of credit risk with respect to
  trade receivables by actively monitoring the creditworthiness of its
  customers. Historically, the Company has not incurred any significant
  credit related losses.
 
                                      F-31
<PAGE>
 
               CROWN CASTLE INTERNATIONAL CORP. AND SUBSIDIARIES
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
14. Quarterly Financial Information (Unaudited)
 
    Summary quarterly financial information for the years ended December 31,
1997 and 1998 is as follows:
 
<TABLE>
<CAPTION>
                                              Three Months Ended
                                   -------------------------------------------
                                   March 31  June 30  September 30 December 31
                                   --------  -------  ------------ -----------
                                     (In thousands of dollars, except per
                                                share amounts)
   <S>                             <C>       <C>      <C>          <C>
   1997:
     Net revenues................. $ 1,994   $ 4,771    $11,481      $13,159
     Operating income (loss)......  (1,293)     (921)        61       (1,299)
     Net loss.....................    (443)   (1,706)    (4,001)      (5,792)
     Loss per common share--basic
      and diluted.................   (0.13)    (0.51)     (0.62)       (0.69)
   1998:
     Net revenues................. $11,837   $11,530    $28,894      $60,817
     Operating income (loss)......  (2,494)   (2,197)   (12,006)       3,764
     Net loss.....................  (6,606)   (6,426)   (17,444)      (7,299)
     Loss per common share--basic
      and diluted.................   (0.79)    (0.78)     (0.33)       (0.09)
</TABLE>
 
15. Subsequent Events (Unaudited)
 
    BellSouth Mobility Inc. and BellSouth Telecommunications Inc. ("BellSouth")
    In March 1999, the Company entered into an agreement with BellSouth to
acquire the operating rights for approximately 1,850 of their towers. The
transaction is structured as a lease agreement and will be treated as a sale of
the towers for tax purposes. The Company will pay BellSouth consideration of
$610,000,000, consisting of $430,000,000 in cash and $180,000,000 in shares of
its common stock. The Company will account for this transaction as a purchase
of tower assets. The transaction is expected to close over a period of up to
eight months beginning in the second quarter of 1999. Upon entering into the
agreement, the Company placed $50,000,000 into an escrow account. In order to
fund this escrow deposit, the Company borrowed $45,000,000 under the Senior
Credit Facility.
 
    Powertel, Inc. ("Powertel")
    In March 1999, the Company entered into an agreement with Powertel to
purchase approximately 650 of their towers and related assets. The purchase
price for these towers will be $275,000,000 in cash. The Company will account
for this transaction as an acquisition using the purchase method. Upon entering
into the agreement, the Company placed $50,000,000 into an escrow account. The
Company funded this escrow deposit with borrowings under a $100,000,000 loan
agreement provided by a syndicate of investment banks. The remaining
$50,000,000 of borrowings under this loan agreement were used to repay the
amount drawn under the Senior Credit Facility in connection with the BellSouth
escrow deposit.
 
    Proposed Securities Offerings
    The Company intends to offer shares of its common stock and debt securities
in concurrent underwritten public offerings. The proceeds from such offerings
would be used to repay amounts drawn under the loan agreement in connection
with the BellSouth and Powertel transactions, and to pay the remaining purchase
price for such transactions. Any securities will only be offered by means of a
prospectus forming a part of a registration statement filed with the Securities
and Exchange Commission. There can be no assurance that such securities
offerings can be successfully completed.
 
                                      F-32
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
                          INDEPENDENT AUDITORS' REPORT
 
To the Shareholders and Board of Directors
of Castle Transmission Services (Holdings) Ltd:
 
    We have audited the accompanying balance sheet of the BBC Home Service
Transmission business ("Home Service") at March 31, 1996 and the consolidated
balance sheets of Castle Transmission Services (Holdings) Ltd and its
subsidiaries ("Castle Transmission") at March 31, 1997 and December 31, 1997
and the profit and loss accounts, cash flow statements and reconciliations of
movements in corporate funding for Home Service for the year ended March 31,
1996 and the period from April 1, 1996 to February 27, 1997 and the related
consolidated profit and loss accounts, cash flow statements and reconciliations
of movements in shareholders' funds for Castle Transmission for the period from
February 28, 1997 to March 31, 1997 and the period from April 1, 1997 to
December 31, 1997. These financial statements are the responsibility of Castle
Transmission's and Home Service's management. Our responsibility is to express
an opinion on these financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards in the United Kingdom, which do not differ in any material respect
from generally accepted auditing standards in the United States. Those
standards require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free from material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Home Service at March 31,
1996 and the consolidated financial position of Castle Transmission at March
31, 1997 and December 31, 1997 and the results of operations and cash flows of
Home Service for the year ended March 31, 1996 and for the period from April 1,
1996 to February 27, 1997 and of Castle Transmission for the period from
February 28, 1997 to March 31, 1997 and for the period from April 1, 1997 to
December 31, 1997 in conformity with generally accepted accounting principles
in the United Kingdom.
 
    Generally accepted accounting principles in the United Kingdom vary in
certain respects from generally accepted accounting principles in the United
States. Application of generally accepted accounting principles in the United
States would have affected results of operations for the year ended March 31,
1996 and the period from April 1, 1996 to February 27, 1997 for Home Service
and the period from February 28, 1997 to March 31, 1997 and from April 1, 1997
to December 31, 1997 for Castle Transmission and shareholders' equity at
March 31, 1996 for Home Service and at March 31, 1997 and December 31, 1997 for
Castle Transmission to the extent summarised in Note 27 to these financial
statements.
 
KPMG
Chartered Accountants
Registered Auditor
London, England
 
March 31, 1998
 
                                      F-33
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
                     CONSOLIDATED PROFIT AND LOSS ACCOUNTS
 
<TABLE>
<CAPTION>
                                                                             Castle Transmission Services
                                     BBC Home Service Transmission                  (Holdings) Ltd
                                 -------------------------------------- --------------------------------------
                                                Period                     Period       Period
                                             from April 1,     Two          from     from April 1,    Eight
                                                 1996         Months    February 28,     1997        Months
                                 Year Ended       to          Ended         1997          to          Ended
                                  March 31,  February 27,  February 27, to March 31, December 31,  August 31,
                           Note     1996         1997          1997         1997         1997         1998
                          ------ ----------- ------------- ------------ ------------ ------------- -----------
                                 (Pounds)000  (Pounds)000  (Pounds)000  (Pounds)000   (Pounds)000  (Pounds)000
                                                           (Unaudited)                             (Unaudited)
<S>                       <C>    <C>         <C>           <C>          <C>          <C>           <C>
Turnover................       3    70,367       70,614       12,805        6,433        56,752       59,033
Changes in stocks and
 work in progress.......              (635)        (554)        (150)         340           747       (1,279)
Own work capitalised....             4,653        3,249          308          170         1,127        2,440
Raw materials and
 consumables............                14       (1,155)        (387)        (446)       (2,410)        (281)
Other external charges..           (34,750)     (26,191)      (4,130)      (1,668)      (13,811)     (14,900)
Staff costs.............       4   (17,197)     (16,131)      (3,104)      (1,421)      (14,345)     (16,032)
Depreciation and other
 amounts written off
 tangible and intangible
 assets.................       5   (12,835)     (13,038)      (2,464)      (1,819)      (16,854)     (15,594)
Other operating
 charges................            (1,832)      (2,792)        (181)        (344)       (2,430)      (2,175)
                                   -------      -------      -------       ------       -------      -------
                                   (62,582)     (56,612)     (10,108)      (5,188)      (47,976)     (47,821)
Operating profit........             7,785       14,002        2,697        1,245         8,776       11,212
Other interest
 receivable and similar
 income.................               --           --           --            49           288          440
Interest payable and
 similar charges........       7       --           --           --          (969)      (12,419)      (9,507)
                                   -------      -------      -------       ------       -------      -------
Profit/(loss) on
 ordinary activities
 before and after
 taxation...............  3-6, 8     7,785       14,002        2,697          325        (3,355)       2,145
Additional finance cost
 of non-equity shares...               --           --           --          (318)       (2,862)         --
                                   -------      -------      -------       ------       -------      -------
Retained profit/(loss)
 for the period.........             7,785       14,002        2,697            7        (6,217)       2,145
                                   =======      =======      =======       ======       =======      =======
</TABLE>
 
      Neither BBC Home Service nor Castle Transmission have any recognised
gains or losses other than those reflected in the profit and loss accounts.
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                      F-34
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
                          CONSOLIDATED BALANCE SHEETS
 
<TABLE>
<CAPTION>
                               BBC Home Service        Castle Transmission Services
                                 Transmission                 (Holdings) Ltd
                               ---------------- ------------------------------------------
                                 At March 31,   At March 31, At December 31, At August 31,
                                     1996           1997          1997           1998
                          Note ---------------- ------------ --------------- -------------
                                 (Pounds)000    (Pounds)000    (Pounds)000    (Pounds)000
                                                                              (Unaudited)
<S>                       <C>  <C>              <C>          <C>             <C>
Fixed assets
  Intangible............    9          --           46,573        46,056         44,404
  Tangible..............   10      202,592         206,162       206,134        229,124
                                   -------        --------      --------       --------
                                   202,592         252,735       252,190        273,528
Current assets
  Stocks................   11        1,750             807         1,340          2,620
  Debtors...............   12        4,714          10,344        13,230         11,639
  Amounts owed by group
   undertakings.........               --              --            --           1,273
  Cash at bank and in
   hand.................               --            9,688         8,152          9,198
                                   -------        --------      --------       --------
                                     6,464          20,839        22,722         24,730
Creditors: amounts fall-
 ing due within one
 year...................   13       (6,627)        (14,820)      (29,139)       (36,514)
                                   -------        --------      --------       --------
Net current
 assets/(liabilities)...              (163)          6,019        (6,417)       (11,784)
                                   -------        --------      --------       --------
Total assets less cur-
 rent liabilities.......           202,429         258,754       245,773        261,744
Creditors: amounts fall-
 ing due after more than
 one year...............   14          --         (154,358)     (143,748)      (149,535)
Provisions for liabili-
 ties and charges.......   15          --           (1,723)       (2,157)        (2,461)
                                   -------        --------      --------       --------
Net assets..............           202,429         102,673        99,868        109,748
                                   =======        ========      ========       ========
Capital and reserves
  Corporate funding.....           202,429             --            --             --
  Called up share capi-
   tal..................   16          --          102,348       102,898        108,303
  Profit and loss ac-
   count................   17          --              325        (3,030)         1,445
                                   -------        --------      --------       --------
                                   202,429         102,673        99,868        109,748
                                   =======        --------      --------       --------
Shareholders'
 funds/(deficit)
  Equity................                               109        (6,107)       109,748
  Non-equity............                           102,564       105,975            --
                                                  --------      --------       --------
                                                   102,673        99,868        109,748
                                                  ========      ========       ========
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                      F-35
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
                       CONSOLIDATED CASH FLOW STATEMENTS
 
<TABLE>
<CAPTION>
                                                                              Castle Transmission Services
                                    BBC Home Service Transmission                    (Holdings) Ltd
                               ---------------------------------------- ----------------------------------------
                                                                        Period from    Period from      Eight
                                  Year       Period from    Two Months  February 28,    April 1,       Months
                                  Ended     April 1, 1996     Ended         1997          1997          Ended
                                March 31,  to February 27, February 27, to March 31, to December 31, August 31,
                                  1996          1997           1997         1997          1997          1998
                          Note ----------- --------------- ------------ ------------ --------------- -----------
                               (Pounds)000   (Pounds)000   (Pounds)000  (Pounds)000    (Pounds)000   (Pounds)000
                                                           (Unaudited)                               (Unaudited)
<S>                       <C>  <C>         <C>             <C>          <C>          <C>             <C>
Cash inflow from
 operating activities...   21     24,311        26,427         5,161         5,756        27,983        37,302
Returns on investment
 and servicing of
 finance................   22        --            --            --           (885)       (2,428)      (10,076)
Capital expenditure and
 financial investments..   22    (17,190)      (20,092)         (711)         (748)      (14,361)      (36,135)
Acquisitions and
 disposals..............   22        --            --            --       (251,141)         (307)          --
                                 -------       -------        ------      --------      --------      --------
Cash inflow/(outflow)...           7,121         6,335         4,450      (247,018)       10,887        (8,909)
Financing...............   22
Net (decrease) in
 corporate funding......          (7,121)       (6,335)       (4,450)          --            --            --
Issuance of shares......             --            --            --        102,348           550         5,405
Increase/(decrease) in
 debt...................             --            --            --        154,358       (12,973)        5,000
Capital element of
 finance
 lease rentals..........             --            --            --            --            --           (450)
                                 -------       -------        ------      --------      --------      --------
                                  (7,121)       (6,335)       (4,450)      256,706       (12,423)        9,955
                                 -------       -------        ------      --------      --------      --------
Increase/(decrease) in
 cash...................             --            --            --          9,688        (1,536)        1,046
                                 =======       =======        ======      ========      ========      ========
Reconciliation of net
 cash flow to movement
 in net debt............   23
Increase/(decrease) in
 cash in the period.....             --            --            --          9,688        (1,536)        1,046
Cash (inflow)/outflow
 from
 (increase)/decrease in
 debt...................             --            --            --       (154,358)       12,973        (4,550)
                                 -------       -------        ------      --------      --------      --------
Change in net debt
 resulting from cash
 flow...................             --            --            --       (144,670)       11,437        (3,504)
New finance leases......             --            --            --            --           (711)         (797)
Amortisation of bank
 loan issue costs.......             --            --            --            --         (2,087)         (159)
Amortisation of
 Guaranteed Bonds.......             --            --            --            --            (55)         (179)
                                 -------       -------        ------      --------      --------      --------
Movement in net debt in
 the period.............             --            --            --       (144,670)        8,584        (4,639)
Net debt at beginning of
 the period.............             --            --            --            --       (144,670)     (136,086)
                                 -------       -------        ------      --------      --------      --------
Net debt at end of the
 period.................             --            --            --       (144,670)     (136,086)     (140,725)
                                 =======       =======        ======      ========      ========      ========
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                      F-36
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
             CONSOLIDATED RECONCILIATION OF MOVEMENTS IN CORPORATE
                          FUNDING/SHAREHOLDERS' FUNDS
 
<TABLE>
<CAPTION>
                                                                        Castle Transmission Services
                              BBC Home Service Transmission                    (Holdings) Ltd
                         ---------------------------------------- ----------------------------------------
                                                         Two      Period from                     Eight
                            Year       Period from      Months    February 28,  Period from      Months
                            Ended     April 1, 1996     Ended         1997      April 1, 1997     Ended
                          March 31,  to February 27, February 27, to March 31, to December 31, August 31,
                            1996          1997           1997         1997          1997          1998
                         ----------- --------------- ------------ ------------ --------------- -----------
                         (Pounds)000   (Pounds)000   (Pounds)000  (Pounds)000    (Pounds)000   (Pounds)000
                                                     (Unaudited)                               (Unaudited)
<S>                      <C>         <C>             <C>          <C>          <C>             <C>
Profit/(loss) for the
 period.................     7,785        14,002         2,697          325         (3,355)        2,145
Net (decrease) in
 corporate funding......    (7,121)       (6,335)       (4,450)         --             --            --
New share capital
 subscribed.............       --            --            --       102,348            550         5,405
Charge on share option
 arrangements...........       --            --            --           --             --          2,330
                           -------       -------       -------      -------        -------       -------
Net
 additions/(deductions)
 to corporate
 funding/shareholders'
 funds..................       664         7,667        (1,753)     102,673         (2,805)        9,880
Opening corporate
 funding/shareholders'
 funds..................   201,765       202,429       211,849          --         102,673        99,868
                           -------       -------       -------      -------        -------       -------
Closing corporate
 funding/shareholders'
 funds..................   202,429       210,096       210,096      102,673         99,868       109,748
                           =======       =======       =======      =======        =======       =======
</TABLE>
 
 
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                      F-37
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
                 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
 
1 Basis of preparation
 
    As used in the financial statements and related notes, the terms "Castle
Transmission" or "the Group" refers to the operations of Castle Transmission
Services (Holdings) Ltd and its subsidiaries, Castle Transmission International
Ltd ("CTI") which is the successor business and Castle Transmission (Finance)
plc ("CTF"). The term "Home Service" refers to the operations of the Home
Service Transmission business of the British Broadcasting Corporation ("BBC")
which was the predecessor business.
 
    These consolidated financial statements have been prepared in accordance
with generally accepted accounting principles ("GAAP") applicable in the United
Kingdom (UK) and comply with the financial reporting standards of the Institute
of Chartered Accountants in England and Wales. A summary of the differences
between UK GAAP and United States (US) GAAP as applicable to Castle
Transmission is set out in Note 27.
 
    Castle Transmission Services (Holdings) Ltd (the "Company") was
incorporated on August 27, 1996 and did not trade in the period to February 27,
1997. CTI was incorporated by the BBC on May 9, 1996 and did not trade in the
period to February 27, 1997. On February 27, 1997, the assets and liabilities
of Home Service were transferred to CTI. On February 28, 1997 CTI was acquired
by the Company. During the period between August 27, 1996 and February 27, 1997
Castle Transmission did not trade and received no income and incurred no
expenditure. Accordingly the first consolidated profit and loss account for
Castle Transmission represents the trading of Castle Transmission for the
period from February 28, 1997 to March 31, 1997. CTF was incorporated
April 9, 1997.
 
    The financial statements for the year ended March 31, 1996 and the period
from April 1, 1996 to February 27, 1997 represent the profit and loss accounts,
balance sheet, cash flow statements and reconciliations of movements in
corporate funding of Home Service. They have been prepared from the separate
financial records and management accounts of Home Service.
 
    Home Service was charged a management fee by the BBC representing an
allocation of certain costs including pension, information technology,
occupancy and other administration costs which were incurred centrally by the
BBC but which were directly attributable to Home Service. Management believes
such allocation is reasonable. Such costs are based on the pension arrangement
and the cost structure of the BBC and are not necessarily representative of
such costs of Castle Transmission under separate ownership.
 
    Home Service did not incur any costs in relation to financing as necessary
funding was provided from the BBC through the corporate funding account. No
interest is charged by the BBC on such funds because there is no debt at BBC
which is attributable to Home Service.
 
    Home Service was not a separate legal entity and therefore was not directly
subject to taxation on its results. The BBC is a not-for-profit organisation
and is not subject to taxation except to the extent of activities undertaken
with the objective of making a profit, including all external activities
(principally site sharing and commercial projects). The tax charge attributable
to Home Service has been calculated as if Home Service were under separate
ownership since April 1, 1994 and as if all of its results of operations were
subject to normal taxation.
 
    Redundancy costs were incurred by the BBC which related to Home Service
staff. The redundancy costs amounted to (Pounds)1.1m in 1996 and (Pounds)0.6m
in the period from April 1, 1996 to
 
                                      F-38
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
February 27, 1997. The redundancy programmes were controlled by the BBC and the
costs were not recharged to Home Service. No adjustment has been made in the
Home Service financial statements for these costs because any costs incurred
would have been reflected in the cost base of Home Service, and as described in
note 25 would have been off-set by an increase in turnover from the BBC.
 
    The consolidated financial statements for the two months ended February 27,
1997 and as of and for the eight months ended August 31, 1998 are unaudited;
however, in the opinion of all the directors, all adjustments (consisting of
normal recurring adjustments) necessary for a fair presentation have been made.
Accounting measurements at interim dates inherently involve greater reliance on
estimates than at year end. Operating results for the eight month period ended
August 31, 1998 are not necessarily indicative of the results that may be
expected for the year ending December 31, 1998.
 
2 Accounting policies
 
    The following accounting policies have been applied consistently in dealing
with items which are considered material in relation to the financial
statements of Home Service and the consolidated financial statements of Castle
Transmission.
 
 Basis of consolidation
 
    The consolidated financial statements include the financial statements of
the Company and its subsidiaries made up to March 31, 1997 and December 31,
1997 after elimination of all significant inter-company accounts and
transactions. The acquisition method of accounting has been adopted. Under this
method, the results of subsidiaries acquired or disposed of in the period are
included in the consolidated profit and loss account from the date of
acquisition or up to the date of disposal.
 
 Goodwill
 
    Purchased goodwill on acquisitions (representing the excess of the fair
value of the consideration given over the fair value of the separable net
assets acquired) is capitalised and amortised over 20 years, the period over
which the Directors consider that the Group will derive economic benefits.
 
 Tangible fixed assets and depreciation
 
    Depreciation is provided to write off the cost or valuation less the
estimated residual value of tangible fixed assets by equal instalments over
their estimated useful economic lives as follows:
 
 Land and buildings
 
<TABLE>
<CAPTION>
                                             Home Service  Castle Transmission
                                            -------------- -------------------
   <S>                                      <C>            <C>
   Freehold and long leasehold buildings...       50 years         50 years
   Freehold and long leasehold improve-
    ments..................................       20 years         20 years
   Short leasehold land and buildings...... Unexpired term   Unexpired term
   No depreciation is provided on freehold
    land...................................
</TABLE>
 
 
                                      F-39
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 Plant and equipment
 
<TABLE>
<CAPTION>
                                               Home Service Castle Transmission
                                               ------------ -------------------
   <S>                                         <C>          <C>
   Transmitters and power plant...............    25 years         20 years
   Electric and mechanical infrastructure..... 10-20 years      10-20 years
   Other plant and machinery..................  3-10 years       3-10 years
   Computer equipment.........................     5 years          5 years
   Motor vehicles.............................      --              3 years
</TABLE>
 
    Strategic spares, which comprise those spares that are vital to the
operation of the transmission system, are included in the capitalised value of
the asset to which they relate and are depreciated over the life of the asset.
 
    Assets under construction are included within fixed assets. The associated
labour costs are capitalised using a predetermined labour rate, and any over or
under recoveries are recognised in the profit and loss account in the period in
which they arise.
 
 Foreign currencies
 
    Transactions in foreign currencies are translated at the rate of exchange
ruling at the date of the transaction. Monetary assets and liabilities, to the
extent that they are denominated in foreign currency, are retranslated at the
rate of exchange ruling at the balance sheet date and gains or losses are
included in the profit and loss account.
 
 Leases
 
    Where the Company enters into a lease which entails taking substantially
all the risks and rewards of ownership of an asset, the lease is treated as a
"finance lease'. The asset is recorded in the balance sheet as a tangible fixed
asset and is depreciated over its useful life or term of the lease, whichever
is shorter. Future instalments under such leases, net of finance charges, are
included within creditors. Rentals payable are apportioned between the finance
element, which is charged to the profit and loss account, and the capital
element which reduces the outstanding obligation for future instalments.
 
    Operating lease rentals are charged to the profit and loss account on a
straight line basis over the period of the lease.
 
 Pensions
 
    The pension costs charged in the period include costs incurred, at the
agreed employer's contribution rate. See note 20 for further details.
 
 Stocks
 
    Stocks held are general maintenance spares and manufacturing stocks. Stocks
are stated at the lower of weighted average cost and net realisable value.
 
 Work in progress
 
      For individual projects, the fees on account and project costs are
recorded in work in progress. When a project is complete, the project balances
are transferred to turnover and cost of
 
                                      F-40
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
sales as appropriate, and the net profit is recognised. Where the payments on
account are in excess of project costs, these are recorded as payments on
account.
 
    Provision is made for any losses as soon as they are foreseen.
 
 Taxation
 
    The charge for taxation is based on the result for the period and takes
into account taxation deferred because of timing differences between the
treatment of certain items for taxation and accounting purposes. Provision is
made for deferred tax only to the extent that it is probable that an actual
liability will crystallise.
 
 Turnover
 
    Turnover represents the amounts (excluding value added tax) derived from
the provision of transmission and maintenance contracts, site sharing
arrangements and commercial projects. Revenue is recognised on the basis of
contracts or as services are provided to customers.
 
 Issue costs
 
    Costs incurred in raising funds are deducted from the amount raised and
amortised over the life of the debt facility on a constant yield basis.
 
3 Analysis of turnover
 
<TABLE>
<CAPTION>
                              Home Service            Castle Transmission
                        ------------------------ ------------------------------
                                    Period from                    Period from
                                      April 1,      Period from      April 1,
                        Year Ended    1996 to    February 28, 1997   1997 to
                         March 31,  February 27,   to March 31,    December 31,
                           1996         1997           1997            1997
                        ----------- ------------ ----------------- ------------
                        (Pounds)000 (Pounds)000     (Pounds)000    (Pounds)000
   <S>                  <C>         <C>          <C>               <C>
   By activity
   BBC.................   45,704       49,903          3,982          35,640
   Other--non BBC......   24,663       20,711          2,451          21,112
                          ------       ------          -----          ------
                          70,367       70,614          6,433          56,752
                          ======       ======          =====          ======
</TABLE>
 
                                      F-41
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
4 Staff numbers and costs
 
    The average number of persons employed by the Group (including directors)
during the period, analysed by category was as follows:
 
<TABLE>
<CAPTION>
                                 Home Service            Castle Transmission
                            ----------------------- ------------------------------
                                       Period from                    Period from
                                         April 1,      Period from      April 1,
                            Year Ended   1996 to    February 28, 1997   1997 to
                            March 31,  February 27,   to March 31,    December 31,
                               1996        1997           1997            1997
                            ---------- ------------ ----------------- ------------
   <S>                      <C>        <C>          <C>               <C>
   Operational staff.......    381         357             313            289
   Project staff...........    154         125             108             97
   Management, finance,
    personnel and other
    support services.......     53          70              69             89
                               ---         ---             ---            ---
                               588         552             490            475
                               ===         ===             ===            ===
</TABLE>
 
    The aggregate payroll costs of these persons were as follows:
 
<TABLE>
<CAPTION>
                                  Home Service            Castle Transmission
                            ------------------------ ------------------------------
                                        Period from                    Period from
                                          April 1,      Period from      April 1,
                            Year Ended    1996 to    February 28, 1997   1997 to
                             March 31,  February 27,   to March 31,    December 31,
                               1996         1997           1997            1997
                            ----------- ------------ ----------------- ------------
                            (Pounds)000 (Pounds)000     (Pounds)000    (Pounds)000
   <S>                      <C>         <C>          <C>               <C>
   Wages and salaries......   15,517       14,579          1,189          12,087
   Social security costs...    1,159        1,061             76             768
   Other pension costs.....      521          491            156           1,490
                              ------       ------          -----          ------
                              17,197       16,131          1,421          14,345
                              ======       ======          =====          ======
</TABLE>
 
                                      F-42
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
5 Profit/(loss) on ordinary activities before taxation
 
<TABLE>
<CAPTION>
                                  Home Service             Castle Transmission
                            ------------------------- ------------------------------
                                         Period from                    Period from
                                          April 1,       Period from      April 1,
                            Years Ended    1996 to    February 28, 1997   1997 to
                             March 31,   February 27,    to March 31,   December 31,
                               1996         1997            1997            1997
                            ----------- ------------- ----------------- ------------
                            (Pounds)000  (Pounds)000     (Pounds)000    (Pounds)000
   <S>                      <C>         <C>           <C>               <C>
   Profit (loss) on
    ordinary activities
    before taxation is
    stated after charging:
   Depreciation and other
    amounts written off
    tangible fixed assets:
   Owned...................   12,835       13,038           1,624          14,953
   Leased..................       --           --              --             147
   Goodwill amortisation...       --           --             195           1,754
   Hire of plant and
    machinery--rentals
    payable under operating
    leases.................                   112              53              79
   Hire of other assets--
    under operating
    leases.................                   396              36             530
                              ======       ======           =====          ======
</TABLE>
 
    The information in respect of hire of plant and machinery and other assets
under operating leases is not available for the year ended March 31, 1996.
 
6 Remuneration of directors
 
    There were no directors of Home Service.
 
    The directors of Castle Transmission received no emoluments for the period
February 28, 1997 to March 31, 1997 and (Pounds)277,000 for the period April 1,
1997 to December 31, 1997. The amounts paid to third parties in respect of
directors' services were (Pounds)2,000 for the period from February 28, 1997 to
March 31, 1997 and (Pounds)23,000 for the period from April 1, 1997 to December
31, 1997.
 
    The aggregate emoluments of the highest paid director were (Pounds)170,000.
The highest paid director is not a member of any Group pension scheme.
 
 Pension entitlements
 
    On retirement the directors participating in the Group defined benefit
scheme are entitled to 1/60th of their final pensionable salary for each year
of service.
 
 
                                      F-43
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
7 Interest payable and similar charges
 
<TABLE>
<CAPTION>
                                     Home Service              Castle Transmission
                             ---------------------------- ------------------------------
                                                                            Period from
                                           Period from       Period from      April 1,
                             Year Ended  April 1, 1996 to February 28, 1997   1997 to
                              March 31,    February 27,     to March 31,    December 31,
                                1996           1997             1997            1997
                             ----------- ---------------- ----------------- ------------
                             (Pounds)000   (Pounds)000       (Pounds)000    (Pounds)000
   <S>                       <C>         <C>              <C>               <C>
   On bank loans and over-
    drafts.................       --            --               934            3,315
   On all other loans......       --            --                --            6,934
   Finance charges payable
    in respect of finance
    leases and hire pur-
    chase contracts........       --            --                --               28
   Finance charges
    amortised in respect of
    bank loans (see note
    14)....................       --            --                35            2,087
   Finance charges
    amortised in respect of
    the Bonds..............       --            --                --               55
                                 ---           ---               ---           ------
                                  --            --               969           12,419
                                 ===           ===               ===           ======
</TABLE>
 
8 Taxation
 
 Home Service
 
    There is no tax charge in respect of the results of Home Service for the
year ended March 31, 1996 or for the period from April 1, 1996 to February 27,
1997. As a separate legal entity subject to normal taxation, Home Service would
have capital allowances available as discussed below which would result in
taxable losses for all periods. Deferred tax assets have not been recognised on
such tax losses as management has concluded that it is not likely that the
deferred tax asset would be realised.
 
 Castle Transmission
 
    There is no tax charge in respect of the period from February 28, 1997 to
March 31, 1997 and April 1, 1997 to December 31, 1997. Based on an agreement
with the Inland Revenue Service, Castle Transmission will have capital
allowances available on capital expenditure incurred by Home Service and the
BBC prior to the acquisition of approximately (Pounds)179 million. The
accelerated tax deductions associated with such capital allowances result in a
taxable loss for both periods. Deferred tax assets have not been recognised on
such tax losses as management has concluded that it is not likely that the
deferred tax asset would be realised based on the limited operating history of
Castle Transmission.
 
                                      F-44
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
9 Intangible assets
 
  Castle Transmission
 
<TABLE>
<CAPTION>
                                                          As at       As at
                                                        March 31,  December 31,
                                                          1997         1997
                                                       ----------- ------------
                                                       (Pounds)000 (Pounds)000
   <S>                                                 <C>         <C>
   Goodwill
   Cost
   At beginning of period.............................      --        46,768
   Arising on acquisition of Home Service.............   46,768          --
   Adjustment to the allocation of fair value arising
    on acquisition of Home Service (see notes 18 and
    24)...............................................      --         1,237
                                                         ------       ------
   At end of the period...............................   46,768       48,005
                                                         ======       ======
   Amortisation
   At beginning of period.............................      --           195
   Charged in period..................................      195        1,754
                                                         ------       ------
   At end of the period...............................      195        1,949
                                                         ======       ======
   Net book value
   At end of the period...............................   46,573       46,056
                                                         ======       ======
</TABLE>
 
10 Tangible fixed assets
 
  Home Service
 
<TABLE>
<CAPTION>
                              Land and    Plant and   Computer   Assets under
                              buildings   machinery   equipment  construction    Total
                             ----------- ----------- ----------- ------------ -----------
                             (Pounds)000 (Pounds)000 (Pounds)000 (Pounds)000  (Pounds)000
   <S>                       <C>         <C>         <C>         <C>          <C>
   (i) Year ended March 31,
    1996
   Cost or valuation
   At April 1, 1995........    26,789      178,205      1,337       22,309      228,640
   Additions...............       --           111         40       17,928       18,079
   Disposals...............       --           --      (1,325)         --        (1,325)
   Transfers...............       474       13,354        --       (13,828)         --
                               ------      -------     ------      -------      -------
   At March 31, 1996.......    27,263      191,670         52       26,409      245,394
                               ------      -------     ------      -------      -------
   Depreciation
   At April 1, 1995........     7,291       22,671        441          --        30,403
   Charge for period.......       819       12,008          8          --        12,835
   On disposal.............       --           --        (436)         --          (436)
                               ------      -------     ------      -------      -------
   At March 31, 1996.......     8,110       34,679         13          --        42,802
                               ------      -------     ------      -------      -------
   Net book value
   At March 31, 1996.......    19,153      156,991         39       26,409      202,592
                               ======      =======     ======      =======      =======
</TABLE>
 
                                      F-45
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
<TABLE>
<CAPTION>
                             Land and    Plant and   Computer   Assets under
                             buildings   machinery   equipment  construction    Total
                            ----------- ----------- ----------- ------------ -----------
                            (Pounds)000 (Pounds)000 (Pounds)000 (Pounds)000  (Pounds)000
   <S>                      <C>         <C>         <C>         <C>          <C>
   (ii) Period ended
    February 27, 1997
   Cost or valuation
   At April 1, 1996........   27,263      191,670        52        26,409      245,394
   Additions...............      --            24       179        14,283       14,486
   Disposals...............      --        (1,816)      --         (1,718)      (3,534)
   Transfers...............    2,585       23,972       252       (26,809)         --
   Transfer between
    business units.........   10,824       (2,061)       (4)          612        9,371
                              ------      -------       ---       -------      -------
   At February 27, 1997....   40,672      211,789       479        12,777      265,717
                              ------      -------       ---       -------      -------
   Depreciation
   At April 1, 1996........    8,110       34,679        13           --        42,802
   Charge for period.......      807       12,158        73           --        13,038
   On disposal.............      --        (1,816)      --            --        (1,816)
   Transfers...............       46         (108)       62           --           --
   Transfers between
    business units.........    2,185         (137)       (1)          --         2,047
                              ------      -------       ---       -------      -------
   At February 27, 1997....   11,148       44,776       147           --        56,071
                              ------      -------       ---       -------      -------
   Net book value
   At February 27, 1997....   29,524      167,013       332        12,777      209,646
                              ======      =======       ===       =======      =======
</TABLE>
 
  The transfers between business units reflect transactions made between the
predecessor business and other business units of the BBC, in preparation for
the sale of Home Service. These include the transfer of the head office at
Warwick into the books of Home Service prior to the sale.
 
Castle Transmission
<TABLE>
<CAPTION>
                             Land and    Plant and   Computer   Assets under
                             buildings   machinery   equipment  construction    Total
                            ----------- ----------- ----------- ------------ -----------
                            (Pounds)000 (Pounds)000 (Pounds)000 (Pounds)000  (Pounds)000
   <S>                      <C>         <C>         <C>         <C>          <C>
   (i) Period ended March
    31, 1997
   Cost
   On acquisition..........   30,373      163,556       332        12,777      207,038
   Additions...............      --            56       --            692          748
   Transfers...............       17           59       --            (76)         --
                              ------      -------       ---       -------      -------
   At March 31, 1997.......   30,390      163,671       332        13,393      207,786
                              ------      -------       ---       -------      -------
   Depreciation
   On acquisition..........      --           --        --            --           --
   Charge for period.......       86        1,529         9           --         1,624
                              ------      -------       ---       -------      -------
   At March 31, 1997.......       86        1,529         9           --         1,624
                              ------      -------       ---       -------      -------
   Net book value
   At March 31, 1997.......   30,304      162,142       323        13,393      206,162
                              ======      =======       ===       =======      =======
   (ii) Period ended
    December 31, 1997
   Cost
   At April 1, 1997........   30,390      163,671       332        13,393      207,786
   Addition................       10        3,602       582        10,878       15,072
   Transfers...............      651       12,772       --        (13,423)         --
                              ------      -------       ---       -------      -------
   At December 31, 1997....   31,051      180,045       914        10,848      222,858
                              ------      -------       ---       -------      -------
   Depreciation
   At April 1, 1997........       86        1,529         9           --         1,624
   Charge for period.......      847       13,975       278           --        15,100
                              ------      -------       ---       -------      -------
   At December 31, 1997....      933       15,504       287           --        16,724
                              ------      -------       ---       -------      -------
   Net book value
   At December 31, 1997....   30,118      164,541       627        10,848      206,134
                              ======      =======       ===       =======      =======
</TABLE>
 
                                      F-46
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    The net book value of land and buildings comprises:
 
<TABLE>
<CAPTION>
                                       Home Service     Castle Transmission
                                       ------------ ----------------------------
                                       At March 31, At March 31, At December 31,
                                           1996         1997          1997
                                       ------------ ------------ ---------------
                                       (Pounds)000  (Pounds)000    (Pounds)000
   <S>                                 <C>          <C>          <C>
   Freehold...........................    16,268       21,558        21,375
   Long leasehold.....................     1,540        7,468         7,472
   Short leasehold....................     1,345        1,278         1,271
                                          ------       ------        ------
                                          19,153       30,304        30,118
                                          ======       ======        ======
</TABLE>
 
    Included within fixed assets are the following assets held under finance
leases:
 
<TABLE>
<CAPTION>
                                       Home Service     Castle Transmission
                                       ------------ ----------------------------
                                       At March 31, At March 31, At December 31,
                                           1996         1997          1997
                                       ------------ ------------ ---------------
                                       (Pounds)000  (Pounds)000    (Pounds)000
   <S>                                 <C>          <C>          <C>
   Motor vehicles.....................      --           --            270
   Computer equipment.................      --           --            441
                                           ---          ---            ---
                                            --           --            711
                                           ===          ===            ===
</TABLE>
 
11 Stocks
<TABLE>
<CAPTION>
                             Home Service            Castle Transmission
                             ------------ ------------------------------------------
                             At March 31, At March 31, At December 31, At August 31,
                                 1996         1997          1997           1998
                             ------------ ------------ --------------- -------------
                             (Pounds)000  (Pounds)000    (Pounds)000    (Pounds)000
                                                                        (Unaudited)
   <S>                       <C>          <C>          <C>             <C>
   Work in progress (see
    note 13)...............       --          --              274          1,421
   Spares and manufacturing
    stocks.................     1,750         807           1,066          1,199
                                -----         ---           -----          -----
                                1,750         807           1,340          2,620
                                =====         ===           =====          =====
</TABLE>
 
12 Debtors
<TABLE>
<CAPTION>
                                      Home Service     Castle Transmission
                                      ------------ ----------------------------
                                      At March 31, At March 31, At December 31,
                                          1996         1997          1997
                                      ------------ ------------ ---------------
                                      (Pounds)000  (Pounds)000    (Pounds)000
   <S>                                <C>          <C>          <C>
   Trade debtors.....................    3,780         7,503        10,250
   Other debtors.....................      212         2,259         2,200
   Prepayments and accrued income....      722           582           780
                                         -----        ------        ------
                                         4,714        10,344        13,230
                                         =====        ======        ======
</TABLE>
 
13 Creditors: amounts falling due within one year
<TABLE>
<CAPTION>
                                     Home Service     Castle Transmission
                                     ------------ ----------------------------
                                     At March 31, At March 31, At December 31,
                                         1996         1997          1997
                                     ------------ ------------ ---------------
                                     (Pounds)000  (Pounds)000    (Pounds)000
   <S>                               <C>          <C>          <C>
   Payments on account..............      426           347           --
   Obligations under finance leases
    and hire purchase contracts.....      --            --            490
   Trade creditors..................      872         4,123         1,916
   Other creditors..................      --          1,519         2,153
   Accruals and deferred income.....    5,329         8,831        24,580
                                        -----        ------        ------
                                        6,627        14,820        29,139
                                        =====        ======        ======
</TABLE>
 
                                      F-47
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    Payments on account (and work in progress) relate to commercial projects
and are shown net in the financial statements. The gross billings amount to
(Pounds)3,222,000 in 1996, (Pounds)3,836,000 in March 1997 and
(Pounds)2,458,000 in December 1997. The related gross costs amounted to
(Pounds)2,796,000 in 1996, (Pounds)3,489,000 in March 1997 and
(Pounds)2,732,000 in December 1997.
 
14 Creditors: amounts falling due after more than one year
<TABLE>
<CAPTION>
                                                Castle Transmission
                                     ------------------------------------------
                                     At March 31, At December 31, At August 31,
                                         1997          1997           1998
                                     ------------ --------------- -------------
                                     (Pounds)000    (Pounds)000    (Pounds)000
                                                                   (Unaudited)
   <S>                               <C>          <C>             <C>
   Guaranteed Bonds................        --         120,582        120,761
   Bank loans and overdrafts.......    154,358         22,945         28,104
   Obligations under finance leases
    and hire purchase contracts....        --             221            670
                                       -------        -------        -------
                                       154,358        143,748        149,535
                                       =======        =======        =======
   Debts can be analysed as falling
    due:
   in one year or less, or on de-
    mand...........................        --             --
   between one and two years.......      7,244             59
   between two and five years......     29,160            162
   in five years or more...........    117,954        143,527
                                       -------        -------
                                       154,358        143,748
                                       =======        =======
</TABLE>
 
    On May 21, 1997, CTF issued and Castle Transmission guaranteed,
(Pounds)125,000,000 9 percent Guaranteed Bonds due 2007 (the "Guaranteed
Bonds"). The Guaranteed Bonds are redeemable at their principal amount, unless
previously redeemed or purchased and cancelled, on March 30, 2007.
 
    The Guaranteed Bonds may be redeemed in whole but not in part, at the
option of CTF, at their principal amount plus accrued interest if, as a result
of certain changes in the laws and regulations of the United Kingdom, CTF or
Castle Transmission becomes obliged to pay additional amounts.
 
    The Guaranteed Bonds may be redeemed in whole or in part, at the option of
CTF, at any time at the higher of their principal amount and such a price as
will provide a gross redemption yield 0.50 percent per annum above the gross
redemption yield on the benchmark gilt plus (in either case) accrued interest.
 
    Bondholders may, in certain circumstances including but not limited to a
change in control of CTF, or the early termination of the agreement between CTI
and the BBC relating to the domestic analogue transmission of radio and
television programmes by CTI, require the Guaranteed Bonds to be redeemed at
101 percent of their principal amount plus accrued interest.
 
    The Guaranteed Bonds were issued at an issue price of 99.161 percent. The
Guaranteed Bonds are shown net of unamortised discount and issue costs.
Interest accrues from the date of issue and is payable in arrears on March 30
each year commencing March 30, 1998.
 
 
                                      F-48
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
    On February 28, 1997 the Group entered into term and revolving loan
facilities with a syndicate of banks. There are three facilities. Facility A
and Facility B are (Pounds)122,500,000 and (Pounds)35,000,000 term loan
facilities. Facility A is repayable in instalments, the last of which is due in
June 2004, and Facility B is repayable in two instalments in December 2004 and
June 2005. These facilities were made available to finance the amount owed to
the BBC on the acquisition of the Home Service transmission business and were
drawn down in full on February 28, 1997.
 
    The third facility, Facility C, is a (Pounds)5,000,000 revolving loan
facility maturing in June 2005 under which advances are to be made to the Group
to finance its working capital requirements and for general corporate purposes.
This facility was undrawn at March 31, 1997.
 
    Borrowings under the facilities are secured by fixed and floating charges
over substantially all of the assets and undertakings of the Group and bear
interest at 2.25 percent above LIBOR for Facility B and between 0.875 percent
and 1.75 percent above LIBOR (depending on the annualised debt coverage and the
outstanding percentage of the facilities) for Facilities A and C.
 
    The net proceeds of the Guaranteed Bonds were used to repay substantially
all of the amounts outstanding under Facilities A, B and C. The remaining
balance of Facilities A, B and C was replaced by a (Pounds)64,000,000 revolving
loan facility maturing in May 2002 (the "New Facility"), under which advances
will be made to CTI to finance its working capital requirements and finance
capital expenditures in respect of Digital Terrestrial Television.
 
    Borrowings under the New Facility are secured by fixed and floating charges
over substantially all of the assets and undertakings of Castle Transmission
and bear interest at LIBOR plus the applicable margin plus cost rate.
 
    Included within bank loans and overdrafts is an amount of (Pounds)3,142,000
at March 31, 1997 and (Pounds)1,055,000 at December 31, 1997 representing
finance costs deferred to future accounting periods in accordance with FRS4. As
a result of the issuance of the Guaranteed Bonds and the New Facility, the
remaining deferred financing costs of (Pounds)1,930,000, relating to Facilities
A, B and C were charged to the profit and loss account during the period from
April 1, 1997 to December 31, 1997.
 
15 Provision for liabilities and charges
<TABLE>
<CAPTION>
                                                        Castle Transmission
                                                    ----------------------------
                                                    At March 31, At December 31,
                                                        1997          1997
                                                    ------------ ---------------
                                                    (Pounds)000    (Pounds)000
<S>                                                 <C>          <C>
On acquisition/at the start of the period..........    1,723          1,723
Fair value adjustments (see note 24)...............      --           1,016
Established in the period (see below)..............      --             417
Utilised in the period.............................      --            (999)
                                                       -----          -----
At the end of the period...........................    1,723          2,157
                                                       =====          =====
</TABLE>
 
    Home Service did not make any provisions for liabilities and charges. On
the acquisition by Castle Transmission, a provision was established for costs
associated with the split of the BBC transmission business between Home Service
and World Service comprising redundancy costs and costs relating to the
relocation and reorganisation of shared sites. No payments or additional
provisions were made in the one month period and the balance on acquisition and
at March 31, 1997 was (Pounds)1,723,000.
 
                                      F-49
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    As a result of the completion of the fair value exercise this provision was
reduced by (Pounds)234,000 and a further provision was made of
(Pounds)1,250,000 in respect of a contingent liability for wind loading fees
that existed at February 27, 1997. See notes 18 and 24 for further details.
 
    A further provision of (Pounds)417,000, in respect of these wind loading
fees, was charged to the profit and loss account during the period from April
1, 1997 to December 31, 1997.
 
16 Share capital
 
<TABLE>
<CAPTION>
                             At March 31,  At December 31,
                                 1997           1997       At March 31, At December 31,
                              Number of       Number of        1997          1997
                                shares         shares      (Pounds)000    (Pounds)000
                            -------------- --------------- ------------ ---------------
   <S>                      <C>            <C>             <C>          <C>
   Authorised
   Equity: Ordinary Shares
    of 1 pence each........     11,477,290     11,477,290        115            115
   Non-equity: Redeemable
    Preference Shares of 1
    pence each............. 11,465,812,710 11,465,812,710    114,658        114,658
                            -------------- --------------    -------        -------
                            11,477,290,000 11,477,290,000    114,773        114,773
                            ============== ==============    =======        =======
   Allotted, called up and
    fully paid
   Equity: Ordinary Shares
    of 1 pence each........     10,234,790     10,289,790        102            103
   Non-equity: Redeemable
    Preference Shares of 1
    pence each............. 10,224,555,210 10,279,500,210    102,246        102,795
                            -------------- --------------    -------        -------
                            10,234,790,000 10,289,790,000    102,348        102,898
                            ============== ==============    =======        =======
</TABLE>
 
    On incorporation the Company had an authorised share capital of 100
Ordinary Shares of (Pounds)1 each of which 1 share was allotted, called up and
fully paid.
 
    On January 23, 1997, the 100 issued and unissued Ordinary Shares of
(Pounds)1 each were subdivided into Ordinary Shares of 1 pence each and the
authorised share capital of the Company was increased to (Pounds)114,772,900 by
the creation of 11,467,290 additional Ordinary Shares of 1 pence each and by
the creation of 11,465,812,710 Redeemable Preference Shares of 1 pence each.
 
    On February 28, 1997 the Company issued for cash 10,234,690 Ordinary Shares
of 1 pence each at par and 10,224,555,210 Redeemable Preference Shares of 1
pence each at par.
 
    On September 19, 1997 a further 55,000 Ordinary Shares of 1 pence each and
54,945,000 Redeemable Preference Shares of 1 pence each were issued at par for
cash. These shares were issued to certain members of the management team.
Management believes that this sale price reflects the fair value of the shares
at that date.
 
    The Redeemable Preference Shares are redeemable on December 31, 2050. The
Company may also redeem any number of Redeemable Preference Shares at any time
by giving at least two business days' notice in writing to the holders. In
addition, the Company shall redeem in full all the Redeemable Preference Shares
on or before the earlier or any listing or sale of 87.5 percent or more of the
issued share capital. No premium is payable on redemption.
 
                                      F-50
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    The holders of the Redeemable Preference Shares are entitled to receive a
dividend in respect of periods from January 1, 2004 at a rate of 5 percent per
annum. Dividends shall accrue on a daily basis and shall, unless the Company is
prohibited from paying dividends by the Companies Act 1985 or is not permitted
by any financing agreement to which it is a party to pay such dividend, become
a debt due from and payable to the holders of the Redeemable Preference Shares
on January 1 of each year beginning January 1, 2005.
 
    In accordance with FRS4: Capital Instruments, a finance cost has been
calculated to result in a constant rate of return over the period and carrying
amount for these Redeemable Preference Shares and has been included in the
profit and loss account as an appropriation.
 
    On a winding up of the Company, the holders of the Redeemable Preference
Shares would be entitled, in priority to any payment to the holders of the
Ordinary Shares, to receive an amount equal to the nominal amount paid up on
each Redeemable Preference Share together with all arrears and accruals of the
preferential dividend payable thereon, whether or not such dividend has become
due and payable.
 
    The holders of the Redeemable Preference Shares have no right to vote at
any general meeting of the Company.
 
    At December 31, 1997 two of the shareholders held share warrants which
entitled them to a maximum of 772,500 Ordinary Shares and 771,727,500
Redeemable Preference Shares issued at par. These are subject to adjustment in
accordance with the conditions set out in the warrant instrument which relate
to any reorganisation of the Company's share capital. The rights under the
share warrants can be exercised by giving 7 days' notice to the Company. The
rights lapse on the earliest of the following dates: the date of a listing of
any part of the share capital on the Official List of the London Stock Exchange
or any other stock exchange; the date of any sale of 85 percent or more of the
issued share capital of the Company; the date on which the Company goes into
liquidation; and February 28, 2007.
 
17 Reserves
 
<TABLE>
<CAPTION>
                                                          Castle
                                                       Transmission
                                            -----------------------------------
                                               Period from       Period from
                                            February 28, 1997 April 1, 1997 to
                                            to March 31, 1997 December 31, 1997
                                            ----------------- -----------------
                                               (Pounds)000       (Pounds)000
   <S>                                      <C>               <C>
   Profit and loss account
   At the start of the period.............         --                 325
   Retained profit/(loss) for the period..           7             (6,217)
   Additional finance cost of non-equity
    shares................................         318              2,862
                                                   ---             ------
   At the end of the period...............         325             (3,030)
                                                   ===             ======
</TABLE>
 
18 Acquisition
 
    On February 28, 1997 the Company acquired the entire share capital of CTI.
CTI had itself acquired the assets and liabilities of Home Service on February
27, 1997, with the intention of CTI's ensuing disposal to the Company.
 
                                      F-51
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    As the two transactions were enacted for the purpose of the sale and
purchase of Home Service, a provisional fair value exercise was performed by
CTI on the acquisition of the trade and net assets of Home Service on 27
February 1997, giving rise to acquisition goodwill of (Pounds)39.6 million.
 
    The fair value exercise was only provisional at March 31, 1997 as the
elapsed time had not been sufficient to form a final judgement on the fair
value adjustments. The fair value exercise has now been finalised and as a
result goodwill has been increased by (Pounds)1.2 million. See note 24.
 
    The consideration paid for the acquisition of the shares of CTI by the
Company amounted to (Pounds)45 million plus fees of (Pounds)7.5 million.
(Pounds)7.2 million had been paid or accrued at March 31, 1997, which gave rise
to additional goodwill of (Pounds)7.5 million.
 
    In addition, the BBC was paid (Pounds)199 million by CTI as a repayment of
the loan made by the BBC on the transfer of the assets and liabilities of Home
Service. The total consideration paid by the Group amounted to (Pounds)244
million (excluding fees), which resulted in total goodwill in the Consolidated
Financial Statements of (Pounds)48 million. This goodwill has been capitalised
and will be written off over 20 years, the period over which the Directors
consider that the Group will derive economic benefits.
 
19 Commitments
 
    (a) Capital commitments at the end of the financial period for which no
provision has been made, were as follows:
 
<TABLE>
<CAPTION>
                                      Home Service     Castle Transmission
                                      ------------ ----------------------------
                                      At March 31, At March 31, At December 31,
                                          1996         1997          1997
                                      ------------ ------------ ---------------
                                      (Pounds)000  (Pounds)000    (Pounds)000
   <S>                                <C>          <C>          <C>
   Contracted........................    4,192        4,785         11,431
   Authorised but not contracted.....    7,969        6,490         89,729
                                         =====        =====         ======
</TABLE>
 
      (b) Annual commitments under non-cancellable operating leases were as
follows:
 
<TABLE>
<CAPTION>
                                                                 Castle
                                                              Transmission
                                                         -----------------------
                                                             At December 31,
                                                                  1997
                                                         -----------------------
                                                          Land and
                                                          buildings     Other
                                                         ----------- -----------
                                                         (Pounds)000 (Pounds)000
   <S>                                                   <C>         <C>
   Operating leases which expire:
   Within one year......................................      90         159
   In the second to fifth years inclusive...............     343         385
   Over five years......................................     235         --
                                                             ---         ---
                                                             668         544
                                                             ===         ===
</TABLE>
 
20 Pension scheme
 
 Home Service
 
    Home Service participated in a multi-employer pension scheme operated by
the BBC. The scheme is a defined benefit scheme whereby retirement benefits are
based on the employees' final
 
                                      F-52
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
remuneration and length of service and is funded through a separate trustee
administered scheme. Contributions to the scheme are based on pension costs for
all members of the scheme across the BBC and are made in accordance with the
recommendations of independent actuaries who value the scheme at regular
intervals, usually triennially. Pension scheme assets are not apportioned
between different parts of the BBC.
 
    The pension rate charged to Home Service was 4.5 percent for the year ended
March 31, 1996 and for the period from April 1, 1996 to February 27, 1997. This
charge took into account the surplus shown by the last actuarial valuation of
the BBC scheme. Amounts charged were as follows: (Pounds)521,000 in 1996 and
(Pounds)491,000 in the period from April 1, 1996 to February 27, 1997.
 
 Castle Transmission
 
    The pension charge is not comparable between Home Service and Castle
Transmission due to the former having a reduced charge as a result of the
surplus in the BBC Pension scheme.
 
    Under the terms of the sale agreement Castle Transmission was temporarily
participating in the BBC Pension scheme until July 31, 1997. From August 1,
1997 the Group was committed under the sale agreement to establish its own
pension scheme.
 
    In respect of past service benefits, members were able to choose between
transferring past service benefits to the Group scheme or leaving them in the
BBC Pension scheme. To the extent that past service benefits were transferred,
the BBC Pension scheme made a full transfer payment to the Group scheme
calculated in accordance with the actuarial basis as set out in the sale
agreement.
 
    The pension charge for the period from February 28, 1997 to March 31, 1997
included in the accounts represented contributions payable to the BBC Pension
scheme and amounted to (Pounds)156,000. Contributions are calculated at the
employers' contribution rate of 17.7 per cent of pensionable salary. The
contribution rate has been determined by a qualified actuary and is specified
in the sale agreement.
 
    At August 1, 1997 Castle Transmission established its own pension scheme.
This is a defined benefit scheme and assets were transferred from the BBC
Pension scheme to the extent that members chose to transfer past benefits. From
August 1, the Castle Transmission Pension Scheme will be liable in respect of
future pension benefits. The pension charge for the period from April 1, 1997
to December 31, 1997 was (Pounds)1,490,000.
 
    There were no outstanding or prepaid contributions at either the beginning
or end of the financial periods.
 
    The Group also established a defined contribution scheme which will have a
backdated start date of August 1, 1997. This scheme will be open to employees
joining the Group after March 1, 1997. The defined benefit scheme will not be
open to these employees. The pensionable charge for the period from April 1,
1997 to December 31, 1997 represents contributions under this scheme amounting
to (Pounds)nil.
 
 
                                      F-53
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
21 Reconciliation of operating profit to operating cash flows
 
<TABLE>
<CAPTION>
                                   Home Service               Castle  Transmission
                            --------------------------- ---------------------------------
                                          Period from      Period from      Period from
                            Year Ended   April 1, 1996  February 28, 1997  April 1, 1997
                             March 31,  to February 27,   to March 31,    to December 31,
                               1996          1997             1997             1997
                            ----------- --------------- ----------------- ---------------
                            (Pounds)000   (Pounds)000      (Pounds)000      (Pounds)000
   <S>                      <C>         <C>             <C>               <C>
   Operating profit........    7,785        14,002            1,245            8,776
   Depreciation and
    amortisation charge....   12,835        13,038            1,819           16,854
   (Increase)/Decrease in
    stocks.................     (678)          294               (2)            (746)
   Decrease/(Increase) in
    debtors................    2,571          (258)          (5,372)          (2,937)
   Increase/(Decrease) in
    creditors..............    1,798          (649)           8,066            6,036
                              ------        ------           ------           ------
   Cash inflow from
    operating activities...   24,311        26,427            5,756           27,983
                              ======        ======           ======           ======
</TABLE>
 
 
                                      F-54
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THF BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
22 Analysis of cash flows for headings noted in the cash flow statement
 
<TABLE>
<CAPTION>
                                  Home Service                Castle Transmission
                          ---------------------------- ---------------------------------
                                        Period from       Period from      Period from
                          Year Ended  April 1, 1996 to February 28, 1997  April 1, 1997
                           March 31,    February 27,      to March 31,   to December 31,
                             1996           1997             1997             1997
                          ----------- ---------------- ----------------- ---------------
                          (Pounds)000   (Pounds)000       (Pounds)000      (Pounds)000
<S>                       <C>         <C>              <C>               <C>
Returns on investment
 and servicing of
 finance
Interest received.......        --            --                 49              242
Interest paid...........        --            --               (934)          (2,670)
                            -------       -------          --------         --------
Net cash outflow for
 returns on investment
 and servicing of
 finance................        --            --               (885)          (2,428)
                            =======       =======          ========         ========
Capital expenditure and
 financial investments
Purchase of tangible
 fixed assets...........    (18,079)      (21,810)             (748)         (14,361)
Proceeds on disposal of
 tangible fixed assets..        889         1,718               --               --
                            -------       -------          --------         --------
Net cash outflow for
 capital expenditure and
 financial investments..    (17,190)      (20,092)             (748)         (14,361)
                            =======       =======          ========         ========
Acquisitions and
 disposals
Purchase of subsidiary
 undertaking (see note
 24)....................        --            --            (52,141)            (307)
Amount paid to BBC on
 acquisition............        --            --           (199,000)             --
                            -------       -------          --------         --------
Net cash outflow for
 acquisition and
 disposals..............        --            --           (251,141)            (307)
                            =======       =======          ========         ========
Financing
Issue of shares.........        --            --            102,348              550
Increase/(decrease) in
 corporate funding......     (7,121)       (6,335)              --               --
Debt due beyond a year:
Facility A (net of issue
 costs).................        --            --            120,056              --
Facility B (net of issue
 costs).................        --            --             34,302              --
Repayment of Facility A
 and B..................        --            --                --          (157,500)
New Facility............        --            --                --            24,000
Guaranteed Bonds........        --            --                --           120,527
                            -------       -------          --------         --------
Net cash
 inflow/(outflow) from
 financing..............     (7,121)       (6,335)          256,706          (12,423)
                            =======       =======          ========         ========
</TABLE>
 
                                      F-55
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
23 Analysis of net debt due after one year
 
<TABLE>
<CAPTION>
                                                          Other
                            At February 27,              non-cash   At March 31,
                                 1997        Cashflow     changes       1997
                            --------------- ----------- ----------- ------------
                              (Pounds)000   (Pounds)000 (Pounds)000 (Pounds)000
   <S>                      <C>             <C>         <C>         <C>
   Cash at bank and in
    hand...................       --            9,688       --           9,688
   Debt due after 1 year...       --         (154,358)      --        (154,358)
                                  ---        --------       ---       --------
                                  --         (144,670)      --        (144,670)
                                  ===        ========       ===       ========
</TABLE>
 
<TABLE>
<CAPTION>
                                                        Other
                            At March 31,              non-cash   At December 31,
                                1997      Cashflow     changes        1997
                            ------------ ----------- ----------- ---------------
                            (Pounds)000  (Pounds)000 (Pounds)000   (Pounds)000
   <S>                      <C>          <C>         <C>         <C>
   Cash at bank and in
    hand...................      9,688     (1,536)        --           8,152
   Finance leases..........        --         --         (711)          (711)
   Debt due after 1 year...   (154,358)    12,973      (2,142)      (143,527)
                              --------     ------      ------       --------
                              (144,670)    11,437      (2,853)      (136,086)
                              ========     ======      ======       ========
</TABLE>
 
24 Purchase of subsidiary undertaking
 
<TABLE>
<CAPTION>
                                      At March 31, Fair value  At December 31,
                                          1997     adjustments      1997
                                      ------------ ----------- ---------------
                                      (Pounds)000  (Pounds)000   (Pounds)000
   <S>                                <C>          <C>         <C>
   Net assets acquired:
     Tangible fixed assets...........    207,038        --         207,038
     Stocks..........................        119        134            253
     Debtors.........................      4,972        (97)         4,875
     Creditors--trade................     (6,033)        49         (5,984)
           --owed to BBC on
           acquisition...............   (199,000)       --        (199,000)
     Provisions (see note 15)........     (1,723)    (1,016)        (2,739)
                                        --------     ------       --------
     Adjusted net assets acquired....      5,373       (930)         4,443
     Goodwill........................     46,768      1,237         48,005
                                        --------     ------       --------
     Cost of acquisition including
      related fees...................     52,141        307         52,448
                                        ========     ======       ========
   Satisfied by:
     Cash............................     52,141        307         52,448
                                        ========     ======       ========
</TABLE>
 
    The total consideration paid by Castle Transmission included the assumption
and subsequent repayment of (Pounds)199 million paid to the BBC, see note 18.
 
 Fair value adjustments
 
    The fair value adjustments result from the completion of the fair value
exercise performed by CTI on the acquisition of Home Service and the under
accrual of fees by the Company, in relation to the acquisition of CTI, at March
31, 1997. The (Pounds)1,237,000 increase in goodwill relates predominantly to
the provision of (Pounds)1,250,000 in respect of a dispute over wind loading
fees. This dispute was an existing contingent liability at the date of
acquisition and consequently provision has been made against the fair value of
the assets and liabilities of Home Service at February 27, 1998.
 
                                      F-56
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
25 Related party disclosures
 
 Home Service
 
    Throughout the year ended March, 31 1996 and the period from April 1, 1996
to February 27, 1997, Home Service entered into a number of transactions with
other parts of the BBC. Substantially all of these transactions are exempt from
the disclosure provisions of FRS 8 "Related Party Disclosures" as they have
been undertaken between different parts of the BBC, and are eliminated in the
consolidated accounts of the BBC. However, brief details of the nature of these
transactions are set out below.
 
    The majority of Home Service's income arises from trading with other parts
of the BBC. Prices are set at BBC group level on the basis of cost budgets
prepared by Home Service. The aggregate value of such sales in each of the
years covered by the combined financial statements is given in Note 3.
 
    Administrative costs include expenses re-charged to Home Service by the
BBC. These re-charges related to costs incurred centrally in respect of
pension, information technology, occupancy and other administration costs.
These charges amounted to (Pounds)5.8 million in 1996 and (Pounds)1.2 million
in the period between April 1, 1996 and February 27, 1997. The reduced charge
for the period to February 27, 1997 is a result of more functions being carried
out by employees of Home Service in preparation for the change to a stand alone
entity.
 
    In addition, re-charges were also made for distribution costs relating to
telecommunication links between the BBC and the transmitting stations and these
were then internally re-charged to other parts of the BBC. The charges amounted
to (Pounds)5.6 million in 1996 and (Pounds)6.4 million in the period between
April 1, 1996 and February 27, 1997.
 
                                      F-57
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THF BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
 Castle Transmission
 
    The Shareholders of Castle Transmission are:
 
    Crown Castle International Corp. ("CCIC", formerly Castle Tower Holding
Corp.), Candover Investments plc and funds managed by it ("Candover"),
TeleDiffusion de France International S.A ("TdF") and Berkshire Partners LLC
and funds managed by it ("Berkshire"). They are considered to be related
parties as they are the consortium who own 99 percent of the shares of the
Company.
 
    Castle Transmission paid fees to shareholders in respect of expenses
incurred during the acquisition and success fees. Castle Transmission also has
management agreements with CCIC (for commercial and financial advice and
training and consultancy) and TdF (for technical advice and consulting), these
agreements run for five years from February 28, 1997. Fees are payable on the
basis of an annual fee for agreed services provided to Castle Transmission,
together with fees on a commercial arm's length basis for any additional
services provided. In addition Castle Transmission has agreed to reimburse
shareholders' expenses in relation to attendance at board meetings. The amounts
paid and accrued by the Company during the period were as follows:
 
<TABLE>
<CAPTION>
                                                                   Total amounts
                                                                    payable at
                                 Amounts     Amounts     Amounts     March 31,
   Related party                expensed   capitalised    paid         1997
   -------------               ----------- ----------- ----------- -------------
                               (Pounds)000 (Pounds)000 (Pounds)000  (Pounds)000
   <S>                         <C>         <C>         <C>         <C>
   CCIC.......................      20        1,763       1,763          20
   Candover...................       1          244         244           1
   TdF........................     --           129         --          129
   Berkshire..................       1          315         316         --
                                   ---        -----       -----         ---
                                    22        2,451       2,323         150
                                   ===        =====       =====         ===
</TABLE>
 
<TABLE>
<CAPTION>
                            Total amounts                                     Total amounts
                             payable at                                        payable at
                              March 31,     Amounts     Amounts     Amounts   December 31,
   Related party                1997       expensed   capitalised    paid         1997
   -------------            ------------- ----------- ----------- ----------- -------------
                             (Pounds)000  (Pounds)000 (Pounds)000 (Pounds)000  (Pounds)000
   <S>                      <C>           <C>         <C>         <C>         <C>
   CCIC....................       20          253         --          246           27
   Candover................        1           16         --           13            4
   TdF.....................      129          --          --          129          --
   Berkshire...............      --            55         --           43           12
                                 ---          ---         ---         ---          ---
                                 150          324         --          431           43
                                 ===          ===         ===         ===          ===
</TABLE>
 
 Ongoing BBC relationship
 
    At the time of the acquisition of Home Service, Castle Transmission entered
into a ten year transmission contract with the BBC for the provision of
domestic terrestrial analogue television and radio transmission services
expiring on March 31, 2007. Thereafter, the contract continues until terminated
by twelve months notice by either party on March 31 in any contract year from
and including March 31, 2007. It may also be terminated early if certain
conditions are met.
 
    The contract provides for charges of approximately (Pounds)46 million to be
payable by the BBC to Castle Transmission for the year to March 31, 1998.
Castle Transmission's charges for subsequent years of the contract are largely
determined by a formula which escalates the majority of the charges by a factor
which
 
                                      F-58
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
is 1% below the rate of increase in the Retail Price Index over the previous
calendar year. Those elements of the charges which are subject to the
escalation formula for the contract year commencing April 1, 1998 amount to
approximately (Pounds)46 million.
 
26 Post balance sheet events
 
    On January 23, 1998, the Board of Directors adopted: (i) the All Employee
Share Option Scheme; (ii) the Management Share Option Scheme; and (iii)
individual share option arrangements for certain directors of the Company.
 
    The All Employee Share Option Scheme provides for an unlimited number of
shares to be granted to all employees of the Company. The Board may select any
number of individuals to apply for the grant of an option. Not later than
thirty days following the date by which an application must be made, the Board
may grant to each applicant the number of options specified in his application.
These options may be exercised at the earliest of the third anniversary of the
date of grant, in the event of a flotation or in the event of a take-over,
reconstruction, liquidation or option exchange as set out in the Scheme rules.
For options granted under this scheme the option price and the number of shares
will not change during the life of the option.
 
    Under the terms of the Management Share Option Scheme and the individual
share option arrangements, share options may be granted to employees or
directors of the Company as determined by the Board of Directors up to a
maximum of 460,000 Ordinary Shares and 459,540,000 Redeemable Preference
Shares. Options will vest over periods of up to four years and have a maximum
term of up to nine years. For options over 223,333 Ordinary Shares and
223,110,000 Redeemable Preference Shares, the option price and the number of
shares will not change during the life of the option. The remaining options are
subject to certain performance criteria.
 
    On January 23, 1998 and January 30, 1998 the Company granted options to
purchase an aggregate of 460,000 Ordinary Shares and 459,540,000 Redeemable
Preference Shares under the terms of the individual share option arrangements
and the Management Share Option Scheme, respectively. The weighted average
price for such options is 1.16 pence for Ordinary Shares and 1.16 pence for
Redeemable Preference Shares. The weighted average vesting period for such
options is 1.13 years. Any accounting charge resulting from a difference
between the fair value of the rights to the shares at the date of grant and the
amount of consideration to be paid for the shares will be charged to the profit
and loss account in the year to December 31, 1998 and subsequent years
according to the vesting provisions of the arrangements. Where the options are
subject to performance criteria, the amount initially recognised will be based
on a reasonable expectation of the extent to which these criteria will be met
and will be subject to subsequent adjustments as necessary to deal with changes
in the probability of performance criteria being met.
 
  Update of post balance sheet events (Unaudited)
 
    On March 23, 1998, the Company granted options to purchase an aggregate of
40,750 Ordinary Shares and 40,709,250 Redeemable Preference Shares under the
terms of the All Employee Share Option Scheme. The price for such options is
1.00 pence for both Ordinary Shares and Redeemable Preference Shares. The
vesting period for such options is three years.
 
    The accounting charge related to all share options included within the
unaudited consolidated financial statements for the eight months ended August
31, 1998 is (Pounds)2,330,000.
 
                                      F-59
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
    On April 23, 1998, the Board of Directors adopted share option arrangements
for certain individuals. On that same date, the Company granted options to
purchase 60,000 Ordinary Shares and 59,940,000 Redeemable Preference Shares
under the terms of such share option arrangements. These options will vest over
a period of four years and have a maximum term of six years. The weighted
average price of such options is 1.75 pence for both Ordinary Shares and
Redeemable Preference Shares. The weighted average vesting period for such
options is two years.
 
    On July 1, 1998 and July 15, 1998, CCIC granted options to purchase 59,932
ordinary shares in CCIC to employees of CTI under terms of individual share
option arrangements. The weighted average price for such options is $37.54.
These options vested on August 18, 1998. The accounting charge related to these
options included in the unaudited consolidated financial statements for the
eight months ended August 31, 1998 is (Pounds)978,000.
 
    On July 15, 1998, the Board of Directors of the Company resolved that the
Management Share Option Scheme would not be subject to any performance criteria
and would vest on a time basis only.
 
    An August 11, 1998, the Company granted options to purchase 15,690 Ordinary
Shares and 15,674,310 Redeemable Preference Shares under the terms of the
Management Share Option Scheme. The weighted average price for such options is
2.5 pence for both Ordinary Shares and Redeemable Preference Shares. The
weighted average vesting period for such options is 2.7 years.
 
    On August 21, 1998, the Company issued 515,000 Ordinary Shares and
514,485,000 Redeemable Preference Shares to CCIC for cash at par under the
terms of the warrant. In addition, CCIC subscribed for 10,210 Ordinary Shares
and 10,199,790 Redeemable Preference Shares for cash at a premium of 1.5 pence
per share.
 
    On August 21, 1998, the Company became an 80% owned subsidiary of CCIC. On
that same date, (i) all issued and unissued Redeemable Preference Shares were
redesignated as Ordinary Shares; and (ii) all existing options to purchase
shares in the Company were converted into options to purchase shares in CCIC at
the rate of 7 shares in CCIC for every 1000 shares in the Company.
 
27 Summary of differences between United Kingdom and United States generally
accepted accounting principles
 
    These consolidated financial statements have been prepared in accordance
with UK GAAP, which differ in certain respects from US GAAP. The differences
that affect Home Service and Castle Transmission are set out below:
 
  (a) Tangible fixed assets
 
    During 1993 Home Service revalued upwards its investments in certain
identifiable tangible fixed assets. Such upward revaluation is not permissible
under US GAAP. Rather, depreciated historical cost must be used in financial
statements prepared in accordance with US GAAP.
 
    In the period between April 1, 1996 and February 27, 1997 there were a
number of transfers of fixed assets to and from other parts of the BBC as
explained in note 10. For US GAAP purposes these transfers have been accounted
for under the as-if-pooling-of-interests method for transactions between
entities under common control.
 
                                      F-60
<PAGE>
 
       CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                  THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
  (b) Deferred taxation
 
    Under UK GAAP, deferred taxes are accounted for to the extent that it is
considered probable that a liability or asset will crystallise in the
foreseeable future. Under US GAAP, deferred taxes are accounted for on all
timing differences and a valuation allowance is established in respect of
those deferred tax assets where it is more likely than not that some portion
will remain unrealised. Deferred tax also arises in relation to the tax effect
of other US GAAP adjustments.
 
  (c) Pensions
 
    The Group accounts for costs of pensions under the rules set out in the UK
accounting standards. US GAAP is more prescriptive in respect of actuarial
assumptions and the allocation of costs to accounting periods.
 
  (d) Capitalised interest
 
    Under US GAAP, interest incurred during the construction periods of
tangible fixed assets is capitalised and depreciated over the life of the
assets.
 
  (e) Redeemable preference shares
 
    Under UK GAAP, preference shares with mandatory redemption features or
redeemable at the option of the security holder are classified as a component
of total shareholders' funds. US GAAP requires such redeemable preference
shares to be classified outside of shareholders' funds.
 
  (f) Cash flow statement
 
  Under US GAAP various items would be reclassified within the consolidated
cash flow statement. In particular, interest received, interest paid and
taxation would be part of net cash flows from operating activities, and
dividends paid would be included within net cash flow from financing. In
addition, under US GAAP, acquisitions and disposals would be included as
investing activities.
 
  Movements in those current investments which are included under the heading
of cash under US GAAP form part of the movements entitled "Management of
liquid resources" in the consolidated cash flow statements.
 
                                     F-61
<PAGE>
 
       CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                  THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
  Summary combined statements of cash flows for Castle Transmission prepared
in accordance with US GAAP are set out below:
 
<TABLE>
<CAPTION>
                                        Home Service                         Castle Transmission
                          ---------------------------------------- ----------------------------------------
                                                          Two      Period from                     Eight
                             Year       Period from      Months    February 28,   Period from     Months
                             Ended     April 1, 1996     Ended         1997      April 1, 1997     Ended
                           March 31,  to February 27, February 27, to March 31, to December 31, August 31,
                             1996          1997           1997         1997          1997          1998
                          ----------- --------------- ------------ ------------ --------------- -----------
                          (Pounds)000   (Pounds)000   (Pounds)000  (Pounds)000    (Pounds)000   (Pounds)000
                                                      (Unaudited)                               (Unaudited)
<S>                       <C>         <C>             <C>          <C>          <C>             <C>
Net cash provided by
 operating activities...     24,311        28,146         5,161        4,871         25,555        27,226
Net cash used by
 investing activities...    (17,190)      (21,811)         (711)     (52,889)       (14,668)      (36,135)
Net cash (used)/provided
 by financing
 activities.............     (7,121)       (6,335)       (4,450)      57,706        (12,423)        9,955
                            -------       -------        ------      -------        -------       -------
Net increase/(decrease)
 in cash and cash
 equivalents............        --            --            --         9,688         (1,536)        1,046
Cash and cash
 equivalents at
 beginning of period....        --            --            --           --           9,688         8,152
                            -------       -------        ------      -------        -------       -------
Cash and cash
 equivalents at end of
 period.................        --            --            --         9,688          8,152         9,198
                            =======       =======        ======      =======        =======       =======
</TABLE>
 
  The following is a summary of the approximate effect on Home Service's and
Castle Transmission's net profit and corporate funding/shareholders' funds of
the application of US GAAP.
 
<TABLE>
<CAPTION>
                                        Home Service                            Castle Transmission
                          ---------------------------------------- ---------------------------------------------
                                                          Two                                           Eight
                             Year       Period from      Months       Period from      Period from     Months
                             Ended     April 1, 1996     Ended     February 28, 1997  April 1, 1997     Ended
                           March 31,  to February 27, February 27,   to March 31,    to December 31, August 31,
                             1996          1997           1997           1997             1997          1998
                          ----------- --------------- ------------ ----------------- --------------- -----------
                          (Pounds)000   (Pounds)000   (Pounds)000     (Pounds)000      (Pounds)000   (Pounds)000
                                                      (Unaudited)                                    (Unaudited)
<S>                       <C>         <C>             <C>          <C>               <C>             <C>
Net profit/(loss) as re-
 ported in the profit
 and loss accounts......     7,785        14,002         2,697            325            (3,355)        2,145
US GAAP adjustments:
  Depreciation
   adjustment on
   tangible fixed
   assets...............     3,707         3,993           726            --                --            --
  Pensions..............       --            --            --             --                 65           108
  Capitalised interest..       --            --            --              78               801         1,385
                            ------        ------         -----           ----            ------         -----
Net income/(loss) under
 US GAAP................    11,492        17,995         3,423            403            (2,489)        3,638
Additional finance cost
 of non-equity shares...       --            --            --            (318)           (2,862)          --
                            ------        ------         -----           ----            ------         -----
Net income/(loss)
 attributable to
 ordinary shareholders
 under US GAAP..........    11,492        17,995         3,423             85            (5,351)        3,638
                            ======        ======         =====           ====            ======         =====
</TABLE>
 
                                     F-62
<PAGE>
 
        CASTLE TRANSMISSION SERVICES (HOLDINGS) LTD AND SUBSIDIARIES AND
                   THE BBC HOME SERVICE TRANSMISSION BUSINESS
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
 
 
<TABLE>
<CAPTION>
                             Home Service            Castle Transmission
                             ------------ -----------------------------------------
                                   At March 31,
                             ------------------------ At December 31, At August 31,
                                 1996        1997          1997           1998
                             ------------ ----------- --------------- -------------
                             (Pounds)000  (Pounds)000   (Pounds)000    (Pounds)000
                                                                       (Unaudited)
   <S>                       <C>          <C>         <C>             <C>
   Corporate
    funding/shareholders'
    funds as reported in
    the balance sheets.....    202,429      102,673        99,868        109,748
   US GAAP adjustments:
     Depreciation
      adjustment on
      tangible fixed
      assets...............    (35,945)         --            --             --
     Pensions..............        --           --             65            173
     Capitalised interest..        --            78           879          2,264
     Redeemable preference
      shares (including ad-
      ditional finance cost
      of non-equity
      shares)..............        --      (102,564)     (105,975)           --
                               -------     --------      --------        -------
   Corporate
    funding/shareholders'
    funds/(deficit) under
    US GAAP................    166,484          187        (5,163)       112,185
                               =======     ========      ========        =======
</TABLE>
 
                                      F-63
<PAGE>
 
                          INDEPENDENT AUDITORS' REPORT
 
To the Board of Directors and
 Stockholders of Crown Castle
 International Corp.:
 
    We have audited the accompanying statement of net assets of Bell Atlantic
Mobile Tower Operations as of December 31, 1998, and the related statements of
revenues and direct expenses for each of the years in the two-year period ended
December 31, 1998. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.
 
    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the statement of net assets and the related
statements of revenues and direct expenses are free of material misstatement.
An audit includes examining, on a test basis, evidence supporting the amounts
and disclosures in the statement of net assets and the related statements of
revenues and direct expenses. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall presentation of the statement of net assets and the
related statements of revenues and direct expenses. We believe that our audit
provides a reasonable basis for our opinion.
 
    The statements of net assets and revenues and direct expenses were prepared
for the purpose of complying with the rules and regulations of the Securities
and Exchange Commission. As discussed in note 1, such statements do not reflect
certain corporate overhead expenses incurred by Bell Atlantic Mobile, the
contributor of the net assets, on behalf of the tower operations.
 
    In our opinion, the statements referred to above present fairly, in all
material respects, the net assets of Bell Atlantic Mobile Tower Operations as
of December 31, 1998, and the related revenues and direct expenses for each of
the years in the two-year period ended December 31, 1998, in conformity with
generally accepted accounting principles.
 
    KPMG LLP
 
    March 4, 1998
 
                                      F-64
<PAGE>
 
                              BELL ATLANTIC MOBILE
                                TOWER OPERATIONS
 
                            STATEMENT OF NET ASSETS
                           (In thousands of dollars)
 
                               December 31, 1998
 
<TABLE>
<S>                                                                     <C>
Property and equipment, net............................................ $83,557
                                                                        -------
    Net Assets......................................................... $83,557
                                                                        =======
</TABLE>
 
 
 
                       See notes to financial statements.
 
                                      F-65
<PAGE>
 
                              BELL ATLANTIC MOBILE
                                TOWER OPERATIONS
 
                   STATEMENTS OF REVENUES AND DIRECT EXPENSES
                           (In thousands of dollars)
 
<TABLE>
<CAPTION>
                                                    Years ended December 31,
                                                    --------------------------
                                                        1997          1998
                                                    ------------  ------------
<S>                                                 <C>           <C>
Site rental revenues............................... $      6,480  $     11,183
Costs of operations................................       15,131        14,941
Depreciation and amortization......................        7,221         6,278
                                                    ------------  ------------
  Loss from Tower Operations....................... $    (15,872) $    (10,036)
                                                    ============  ============
</TABLE>
 
 
 
                       See notes to financial statements.
 
                                      F-66
<PAGE>
 
                     BELL ATLANTIC MOBILE TOWER OPERATIONS
                         NOTES TO FINANCIAL STATEMENTS
                           (In thousands of dollars)
 
1. Basis of Presentation and Summary of Significant Accounting Policies
 
 Basis of Presentation
 
    On December 8, 1998 Crown Castle International Corp. ("CCIC") and Bell
Atlantic Mobile and certain entities controlled by Bell Atlantic Mobile ("BAM")
entered into a formation agreement in order to create Crown Atlantic Company
LLC ("Crown Atlantic"). Under the terms of the agreement, BAM will contribute
tower structures and certain related assets while CCIC will contribute cash and
shares of its common stock to Crown Atlantic and its parent company,
respectively. The tower structures and related assets consist of the tower
facilities that were previously part of BAM's cellular operations. Their
locations span New York, New England, Philadelphia, Pittsburgh, Washington-
Baltimore and certain areas in the Southeast and Southwest.
 
    Under the formation agreement, Crown Atlantic will assume all obligations
of BAM as landlord, licensor or tenant relating to the tower space leases with
respect to the period after the closing date. Crown Atlantic will also assume
all obligations of BAM subsequent to the closing date relating to the operation
of the towers and any contracts entered into by BAM during the ordinary course
of business of BAM relating to the towers but only to the extent that such
contracts were chosen to be included in the obligations assumed by Crown
Atlantic. Under the terms of the formation agreement, Crown Atlantic did not
assume certain liabilities as defined in the actual terms of the formation
agreement.
 
    The accompanying statement of net assets reflects the assets to be
contributed by BAM to Crown Atlantic pursuant to the formation agreement. The
statement of net assets reflects BAM's historical carrying values of the
contributed assets, adjusted to exclude certain assets which will not be
contributed as part of the formation agreement.
 
    The accompanying statements of revenue and direct expenses reflect
operations related to the tower assets to be contributed by BAM to Crown
Atlantic per the formation agreement. Certain direct and indirect operating
costs of BAM have been allocated and included in the costs of operations. The
allocated amounts totaled $3,501 and $3,694 for the years ended December 31,
1997 and 1998, respectively. Such allocations are based on determinations that
management believes are reasonable, but may not be necessarily indicative of
such costs incurred by Crown Atlantic in the future. The statements of revenues
and direct expenses do not include allocated costs related to general corporate
overhead, interest expense and income taxes and therefore may not be indicative
of future operations.
 
    The accompanying statement of net assets and the related statements of
revenues and direct expenses were prepared for the purpose of complying with
the requirements of the Securities and Exchange Commission and are not intended
to be a complete presentation of Bell Atlantic Mobile's assets and liabilities
or revenues and expenses.
 
 Summary of Significant Accounting Policies
 
  Use of Estimates
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities, the
disclosure of contingent assets and liabilities as of the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
                                      F-67
<PAGE>
 
                     BELL ATLANTIC MOBILE TOWER OPERATIONS
 
                  NOTES TO FINANCIAL STATEMENTS--(Continued)
                           (In thousands of dollars)
 
 
  Revenue Recognition
 
    Site rental revenues are recognized on a monthly basis under lease or
management agreements. Site rental revenues represent charges for tower usage
billed to third party customers under lease arrangements.
 
2. Property and Equipment
 
    Property and equipment are stated at historical costs. Depreciation of
property and equipment is provided on the straight-line method over the
estimated useful lives of the assets. Property and equipment at December 31,
1998 consisted of the following:
 
<TABLE>
<CAPTION>
                                                           Estimated
                                                          Useful Lives
                                                          ------------
<S>                                                       <C>          <C>
Land.....................................................              $ 21,798
Telecommunication towers and related equipment...........   12 years     97,035
                                                                       --------
                                                                        118,833
Less: accumulated depreciation...........................               (35,276)
                                                                       --------
                                                                       $ 83,557
                                                                       ========
</TABLE>
 
3. Commitments
 
    At December 31, 1998, minimum rental commitments under operating leases
are as follows:
 
<TABLE>
<S>                                                                       <C>
Years ending December 31,
  1999................................................................... 12,235
  2000................................................................... 10,200
  2001...................................................................  8,118
  2002...................................................................  5,512
  2003...................................................................  2,762
</TABLE>
 
4. Site Rental Revenues
 
    At December 31, 1998, minimum amounts receivable under third party lease
agreements are as follows:
 
<TABLE>
<S>                                                                       <C>
Years ending December 31,
  1999................................................................... 12,214
  2000................................................................... 11,948
  2001................................................................... 10,952
  2002...................................................................  6,997
  2003...................................................................  2,207
</TABLE>
 
                                     F-68
<PAGE>
 
                          INDEPENDENT AUDITORS' REPORT
 
The Board of Directors and Stockholders of
 Crown Castle International Corp.
 
    We have audited the accompanying statement of net assets of Powertel Tower
Operations as of December 31, 1998, and the related statement of revenues and
direct expenses for the year then ended. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the statement of net assets and the related
statement of revenues and direct expenses are free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the statement of net assets and the related statement of
revenues and direct expenses. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall presentation of the statement of net assets and the
related statement of revenues and direct expenses. We believe that our audits
provide a reasonable basis for our opinion.
 
    The statements of net assets and revenues and direct expenses were prepared
for the purpose of complying with the rules and regulations of the Securities
and Exchange Commission. As discussed in note 1, such statements do not reflect
certain corporate overhead expenses incurred by Powertel, Inc., the owner of
the net assets, on behalf of the tower operations.
 
    In our opinion, the statements referred to above present fairly, in all
material respects, the net assets of Powertel Tower Operations as of December
31, 1998, and the related revenues and direct expenses for the year then ended
in conformity with generally accepted accounting principles.
 
                                          KPMG LLP
 
    February 5, 1999
 
                                      F-69
<PAGE>
 
                           POWERTEL TOWER OPERATIONS
 
                            STATEMENT OF NET ASSETS
 
                           (In thousands of dollars)
 
                               DECEMBER 31, 1998
 
<TABLE>
<S>                                                                    <C>
Prepaid expenses and other current assets............................. $  2,031
Property and equipment, net...........................................  121,490
                                                                       --------
  Total assets........................................................  123,521
Deferred revenues.....................................................      309
                                                                       --------
  Net assets.......................................................... $123,212
                                                                       ========
</TABLE>
 
 
 
 
                       See notes to financial statements.
 
                                      F-70
<PAGE>
 
                           POWERTEL TOWER OPERATIONS
 
                   STATEMENT OF REVENUES AND DIRECT EXPENSES
 
                           (In thousands of dollars)
 
                          YEAR ENDED DECEMBER 31, 1998
 
<TABLE>
<S>                                                                   <C>
Site rental revenues................................................. $  1,865
Cost of operations...................................................    6,167
Depreciation.........................................................    7,534
                                                                      --------
  Loss from tower operations......................................... $(11,836)
                                                                      ========
</TABLE>
 
 
 
                       See notes to financial statements.
 
                                      F-71
<PAGE>
 
                           POWERTEL TOWER OPERATIONS
 
                         NOTES TO FINANCIAL STATEMENTS
 
                           (In thousands of dollars)
 
1. Basis of Presentation and Summary of Significant Accounting Policies
 
 Basis of Presentation
 
    On March 15, 1999, Crown Castle International Corp. ("CCIC") and Powertel,
Inc. ("Powertel") entered into an asset purchase agreement, whereby Powertel
will sell tower structures and certain related assets to CCIC. The tower
structures and related assets consist of the tower facilities that were
previously part of Powertel's PCS and cellular operations. Their locations span
Atlanta, Georgia; Jacksonville, Florida; Memphis, Tennessee; Jackson,
Mississippi; and Birmingham, Alabama and certain areas in Kentucky and
Tennessee.
 
    The accompanying statement of net assets reflects the assets to be sold by
Powertel to CCIC pursuant to the asset purchase agreement. The statement of net
assets reflects Powertel's historical carrying values of the tower assets,
adjusted to exclude certain assets which will not be contributed as part of the
asset purchase agreement.
 
    The accompanying statement of revenues and direct expenses reflects
operations related to the tower assets to be sold by Powertel to CCIC per the
asset purchase agreement. The statement of revenues and direct expenses does
not include allocated costs related to general corporate overhead, interest
expense and income taxes and therefore may not be indicative of future
operations.
 
    The accompanying statement of net assets and the related statement of
revenues and direct expenses were prepared for the purpose of complying with
the requirements of the Securities and Exchange Commission and are not intended
to be a complete presentation of Powertel's assets and liabilities or revenues
and expenses.
 
 Summary of Significant Accounting Policies
 
    Use of Estimates
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities, the
disclosure of contingent assets and liabilities as of the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
 Revenue Recognition
 
    Site rental revenues are recognized on a monthly basis under lease
agreements. Site rental revenues represent charges for tower usage billed to
third party customers under lease arrangements. Revenue amounts received in
advance are deferred and recognized over the term of the lease agreement.
 
                                      F-72
<PAGE>
 
                           POWERTEL TOWER OPERATIONS
 
                  NOTES TO FINANCIAL STATEMENTS--(Continued)
                           (In thousands of dollars)
 
 
2. Property and Equipment
 
    Property and equipment are stated at historical costs. Depreciation of
property and equipment is provided on the straight-line method over the
estimated useful lives of the assets. Property and equipment at December 31,
1998 consisted of the following:
<TABLE>
<CAPTION>
                                                           Estimated
                                                          Useful Lives
                                                          ------------
<S>                                                       <C>          <C>
Land.....................................................              $    859
Telecommunication towers and related equipment...........   15 years    134,757
                                                                       --------
                                                                        135,616
Less: accumulated depreciation ..........................               (14,126)
                                                                       --------
                                                                       $121,490
                                                                       ========
</TABLE>
 
3. Commitments
 
    At December 31, 1998, minimum rental commitments under operating leases
are as follows:
 
<TABLE>
<S>                                                                       <C>
Year ending December 31,
  1999................................................................... $4,120
  2000...................................................................  4,093
  2001...................................................................  3,276
  2002...................................................................  1,929
  2003...................................................................    626
  Thereafter.............................................................    185
</TABLE>
 
4. Site Rental Revenues
 
    At December 31, 1998, minimum amounts receivable under third party lease
agreements are as follows:
 
<TABLE>
<S>                                                                       <C>
Year ending December 31,
  1999................................................................... $2,690
  2000...................................................................  2,677
  2001...................................................................  2,610
  2002...................................................................  2,131
  2003...................................................................    948
  Thereafter.............................................................    485
</TABLE>
 
                                     F-73
<PAGE>
 
                                [D] UNDERWRITING
   
    We and the underwriters for the offering named below have entered into an
underwriting agreement with respect to the notes. Subject to certain
conditions, each underwriter has severally agreed to purchase the number of
notes indicated in the following table.     
 
<TABLE>
<CAPTION>
                                                                Principal Amount
                         Underwriters                               of Notes
                         ------------                           ----------------
<S>                                                             <C>
 Goldman, Sachs & Co...........................................
 Salomon Smith Barney Inc......................................
 Lehman Brothers Inc...........................................
 Credit Suisse First Boston Corporation........................
                                                                      ----
  Total........................................................
                                                                      ====
</TABLE>
 
                               ----------------
 
    Notes sold by the underwriters to the public will initially be offered at
the initial public offering price set forth on the cover of this prospectus.
Any notes sold by the underwriters to securities dealers may be sold at a
discount from the initial public offering price of up to   % per note from the
initial public offering price. Any such securities dealers may resell any notes
purchased from the underwriters to certain other brokers or dealers at a
discount from the initial public offering price of up to   % per note from the
initial public offering price. If all the notes are not sold at the initial
offering price, the underwriters may change the offering price and the other
selling terms.
   
    The notes are a new issue of securities with no established trading market.
We have been advised by the underwriters that the underwriters intend to make a
market in the notes but are not obligated to do so and may discontinue market
making at any time without notice. No assurance can be given as to the
liquidity of the trading market for the notes.     
 
    In connection with the offerings, the underwriters may purchase and sell
notes in the open market. These transactions may include short sales,
stabilizing transactions and purchases to cover positions created by short
sales. Short sales involve the sale by the underwriters of a greater number of
notes than they are required to purchase in the offering. Stabilizing
transactions consist of certain bids or purchases made for the purpose of
preventing or retarding a decline in the market price of the notes while the
offering is in progress.
 
    The underwriters also may impose a penalty bid. This occurs when a
particular underwriter repays to the underwriters a portion of the underwriting
discount received by it because the representatives have repurchased notes sold
by or for the account of such underwriter in stabilizing or short covering
transactions.
 
    These activities by the underwriters may stabilize, maintain or otherwise
affect the market price of the notes. As a result, the price of the notes may
be higher than the price that otherwise might exist in the open market. If
these activities are commenced, they may be discontinued by the underwriters at
any time these transactions may be effected in the over-the-counter market or
otherwise.
   
    We estimate that our share of the total expenses of the offering, excluding
underwriting discounts and commissions, will be approximately $  .     
   
    We have agreed to indemnify the several underwriters against certain
liabilities, including liabilities under the Securities Act of 1933.     
 
                                      U-1
<PAGE>
 
                                [E] UNDERWRITING
   
    We, the selling stockholders and the underwriters for the U.S. offering
named below have entered into an underwriting agreement with respect to the
shares being offered in the United States. Subject to certain conditions, each
U.S. underwriter has severally agreed to purchase the number of shares
indicated in the following table. Goldman, Sachs & Co. and Salomon Smith Barney
Inc. are the representatives of the U.S. underwriters.     
 
<TABLE>
<CAPTION>
                          Underwriters                          Number of Shares
                          ------------                          ----------------
  <S>                                                           <C>
  Goldman, Sachs & Co..........................................
  Salomon Smith Barney Inc.....................................
  Lehman Brothers Inc..........................................
  Credit Suisse First Boston Corporation.......................
                                                                      ---
    Total......................................................
                                                                      ===
</TABLE>
 
                               ----------------
   
    If the U.S. underwriters sell more shares than the total number set forth
in the table above, the U.S. underwriters have an option to buy up to an
additional    shares from the selling stockholders to cover such sales. They
may exercise that option for 30 days. If any shares are purchased pursuant to
this option, the U.S. underwriters will severally purchase shares in
approximately the same proportion as set forth in the table above.     
   
    The following tables show the per share and total underwriting discounts
and commissions to be paid to the U.S. underwriters by us and the selling
stockholders. Such amounts are shown assuming both no exercise and full
exercise of the U.S. underwriters' option to purchase    additional shares.
    
<TABLE>
<CAPTION>
                                                  Paid by the Company
                                                  -------------------
                                             No Exercise     Full Exercise
                                           --------------------------------
   <S>                                     <C>             <C>
   Per Share..............................    $                $
   Total..................................    $                $
 
<CAPTION>
                                           Paid by the Selling Stockholders
                                           --------------------------------
                                             No Exercise     Full Exercise
                                           --------------------------------
   <S>                                     <C>             <C>
   Per Share..............................    $                $
   Total..................................    $                $
</TABLE>
   
    Shares sold by the U.S. underwriters to the public will initially be
offered at the initial public offering price set forth on the cover of this
prospectus. Any shares sold by the U.S. underwriters to securities dealers may
be sold at a discount of up to $   per share from the initial public offering
price. Any such securities dealers may resell any shares purchased from the
U.S. underwriters to certain other brokers or dealers at a discount of up to
$   per share from the initial public offering price. If all the shares are not
sold at the initial offering price, the representatives may change the offering
price and the other selling terms.     
   
    We and the selling stockholders have entered into underwriting agreements
with the underwriters for the sale of    shares outside the United States. The
terms and conditions of both offerings are the same and the sale of shares in
both offerings are conditioned on each other. Goldman Sachs International and
Salomon Smith Barney are representatives of the underwriters for the offering
outside the United States.     
 
                                      U-1
<PAGE>
 
    The underwriters for each of the offerings have entered into an agreement
in which they agree to restrictions on where and to whom they and any dealer
purchasing from them may offer shares as a part of the distribution of the
shares. The underwriters also have agreed that they may sell shares among each
of the underwriting groups.
   
    We and the selling stockholders have agreed with the underwriters not to
dispose of or hedge any of their common stock or securities convertible into or
exchangeable for shares of common stock during the period from the date of this
prospectus continuing through the date 90 days after the date of this
prospectus, except with the prior written consent of the representatives. This
agreement does not apply to any existing employee benefit plans. See "Shares
Available for Future Sale" for a discussion of certain transfer restrictions.
    
    In connection with the offerings, the underwriters may purchase and sell
shares of common stock in the open market. These transactions may include short
sales, stabilizing transactions and purchases to cover positions created by
short sales. Short sales involve the sale by the underwriters of a greater
number of shares than they are required to purchase in the offerings.
Stabilizing transactions consist of certain bids or purchases made for the
purpose of preventing or retarding a decline in the market price of the common
stock while the offerings are in progress.
 
    The underwriters also may impose a penalty bid. This occurs when a
particular underwriter repays to the underwriters a portion of the underwriting
discount received by it because the representatives have repurchased shares
sold by or for the account of such underwriter in stabilizing or short covering
transactions.
 
    These activities by the underwriters may stabilize, maintain or otherwise
affect the market price of the common stock. As a result, the price of the
common stock may be higher than the price that otherwise might exist in the
open market. If these activities are commenced, they may be discontinued by the
underwriters at any time. These transactions may be effected on the in the
over-the-counter market or otherwise.
   
    We and the selling stockholders estimate that their shares of the total
expenses of the offerings, excluding underwriting discounts and commissions,
will be approximately $   and $  , respectively.     
   
    We and the selling stockholders have agreed to indemnify the several
underwriters against certain liabilities, including liabilities under the
Securities Act of 1933.     
 
    This prospectus may be used by the underwriters and other dealers in
connection with offers and sales of the shares, including sales of shares
initially sold by the underwriters in the offering being made outside of the
United States, to persons located in the United States.
 
                                      U-2
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
    No dealer, salesperson or other person is authorized to give any
information or to represent anything not contained in this prospectus. You
must not rely on any unauthorized information or representations. This
prospectus is an offer to sell only the notes offered hereby, but only under
circumstances and in jurisdictions where it is lawful to do so. The
information contained in this prospectus is current only as of its date.
 
 
                               ----------------
 
 
 
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
[D]                              $300,000,000
 
                                 Crown Castle
                              International Corp.
 
                        % Senior Discount Notes due 2011
 
 
                                 ------------
 
[CROWN CASTLE LOGO APPEARS HERE]
 
                                 ------------
 
 
                             Goldman, Sachs & Co.
 
                             Salomon Smith Barney
 
                                Lehman Brothers
 
                          Credit Suisse First Boston
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
    No dealer, salesperson or other person is authorized to give any
information or to represent anything not contained in this prospectus. You
must not rely on any unauthorized information or representations. This
prospectus is an offer to sell only the shares offered hereby, but only under
circumstances and in jurisdictions where it is lawful to do so. The
information contained in this prospectus is current only as of its date.
 
 
                               ----------------
 
 
 
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
[E]                                 Shares
 
                                 Crown Castle
                              International Corp.
 
                                 Common Stock
 
 
                                 ------------
 
[CROWN CASTLE LOGO APPEARS HERE]
 
                                 ------------
 
 
                             Goldman, Sachs & Co.
 
                             Salomon Smith Barney
 
                                Lehman Brothers
 
                          Credit Suisse First Boston
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                    PART II
 
                   INFORMATION NOT REQUIRED IN THE PROSPECTUS
 
Item 13. Other Expenses of Issuance and Distribution
 
    Set forth below is a table of the registration fee for the Securities and
Exchange Commission, the filing fee for the National Association of Securities
Dealers, Inc., the listing fee for the Nasdaq Stock Market and estimates of all
other expenses to be incurred in connection with the issuance and distribution
of the securities described in the Registration Statement, other than
underwriting discounts and commissions:
 
<TABLE>
     <S>                                                               <C>
     SEC registration fee............................................. $215,450
     NASD filing fee..................................................   30,500
     Nasdaq listing fee...............................................    *
     Printing and engraving expenses..................................    *
     Legal fees and expenses..........................................    *
     Accounting fees and expenses.....................................    *
     Transfer agent and registrar fees................................    *
     Liability insurance premium......................................    *
     Miscellaneous....................................................    *
                                                                       --------
       Total..........................................................    *
                                                                       ========
</TABLE>
      * To be included by amendment.
 
Item 14. Indemnification of Directors and Officers
 
    Section 145 of the General Corporation Law of the State of Delaware
("DGCL") provides that a corporation has the power to indemnify any director or
officer, or former director or officer, who was or is a party or is threatened
to be made a party to any threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative or investigative (other
than an action by or in the right of the corporation) against the expenses
(including attorneys' fees), judgments, fines or amounts paid in settlement
actually and reasonably incurred by them in connection with the defense of any
action by reason of being or having been directors or officers, if such person
shall have acted in good faith and in a manner reasonably believed to be in or
not opposed to the best interests of the corporation, and, with respect to any
criminal action or proceeding, provided that such person had no reasonable
cause to believe his conduct was unlawful, except that, if such action shall be
in the right of the corporation, no such indemnification shall be provided as
to any claim, issue or matter as to which such person shall have been judged to
have been liable to the corporation unless and to the extent that the Court of
Chancery of the State of Delaware (the "Court of Chancery"), or any court in
which such suit or action was brought, shall determine upon application that,
in view of all of the circumstances of the case, such person is fairly and
reasonably entitled to indemnify for such expenses as such court shall deem
proper.
 
    Accordingly, the Restated Certificate of Incorporation of the Company
(Exhibit 3.1) provides that the Company shall, to the maximum extent permitted
under the DGCL, indemnify each person who is or was a director or officer of
the Company. The Company may, by action of the Board of Directors, indemnify
other employees and agents of the Corporation, directors, officers, employees
or agents of a subsidiary, and each person serving as a director, officer,
partner, member, employee or agent of another corporation, partnership, limited
liability company, joint venture, trust or other enterprise, at the request of
the Company, with the same scope and effect as the indemnification of directors
and officers of the Company. Notwithstanding the foregoing, the Company shall
be required to indemnify any person seeking indemnification in connection with
a proceeding (or part thereof) initiated by such person only if such proceeding
(or part thereof) was authorized by the Board of Directors or is a proceeding
to enforce such person's claim to indemnification pursuant to the rights
granted by the
 
                                      II-1
<PAGE>
 
Restated Certificate of Incorporation or otherwise by the Company. The Company
may also enter into one or more agreements with any person which provide for
indemnification greater or different than that provided in the Restated
Certificate of Incorporation.
 
    Furthermore, a director of the Company shall not be liable to the Company
or its stockholders for monetary damages for breach of fiduciary duty as a
director, except for liability (1) for any breach of the director's duty of
loyalty to the Company or its stockholders, (2) for acts or omissions not in
good faith or which involve intentional misconduct or a knowing violation of
law, (3) under Section 174 of the DGCL, or (4) for any transaction from which
the director derived an improper personal benefit.
 
    The Company's By-laws provide that each person who was or is made a party
or is threatened to be made a party to or is involved in any manner in any
threatened, pending or completed action, suit, or proceeding, whether civil,
criminal, administrative or investigative ("Proceeding"), by reason of the fact
that he or she or a person of whom he or she is the legal representative is or
was a director or officer of the Company or, while a director or officer of the
Company, a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise shall be indemnified and
held harmless by the Company to the fullest extent permitted by the DGCL. Such
indemnification shall continue as to a person who has ceased to be a director
or officer and shall inure to the benefit of his or her heirs, executors and
administrators; provided, however, that the Company shall indemnify any such
person seeking indemnification in connection with a Proceeding (or part
thereof) initiated by such person only if such Proceeding (or part thereof) was
authorized by the Board of Directors or is a Proceeding to enforce such
person's claim to indemnification pursuant to the rights granted by the
Company's By-laws. The Company shall pay the expenses incurred by any person
described in the first two sentences of this paragraph in defending any such
Proceeding in advance of its final disposition upon, to the extent such an
undertaking is required by applicable law, receipt of an undertaking by or on
behalf of such person to repay such amount if it shall ultimately be determined
that such person is not entitled to be indemnified by the Company as authorized
in the Company's By-laws or otherwise.
 
    The Company's By-laws further provide that the indemnification and the
advancement of expenses incurred in defending a Proceeding prior to its final
disposition provided by, or granted pursuant to, the Company's By-laws shall
not be exclusive of any other right which any person may have or hereafter
acquire under any statute, provision of the Restated Certificate of
Incorporation, other provision of the Company's By-laws or otherwise. The
Company may also maintain insurance, at its expense, to protect itself and any
person who is or was a director, officer, partner, member, employee or agent of
the Company or a subsidiary or of another corporation, partnership, limited
liability company, joint venture, trust or other enterprise against any
expense, liability or loss, whether or not the Company would have the power to
indemnify such person against such expense, liability or loss under the DGCL.
 
    The Company's By-laws further provide that the Company may, to the extent
authorized from time to time by the Board of Directors, grant rights to
indemnification, and rights to be paid by the Company the expenses incurred in
defending any Proceeding in advance of its final disposition, to any person who
is or was an employee or agent (other than a director or officer) of the
Company or a subsidiary thereof and to any person who is or was serving at the
request of the Company or a subsidiary thereof as a director, officer, partner,
member, employee or agent of another corporation, partnership, limited
liability company, joint venture, trust or other enterprise, including service
with respect to employee benefit plans maintained or sponsored by the Company
or a subsidiary thereof, to the fullest extent of the provisions of the
Company's By-laws with respect to the indemnification and advancement of
expenses of directors and officers of the Company.
 
                                      II-2
<PAGE>
 
Item 15. Recent Sales of Unregistered Securities
 
    In each of the sales described below, unless otherwise indicated, the
Company (or the relevant predecessor) relied on Section 4(2) of the Securities
Act of 1933 for exemption from registration. No brokers or underwriters were
used in connection with any of such sales. The recipients of securities in each
such transaction represented their intention to acquire the securities for
investment only and not with a view to or for sale in connection with any
distribution thereof and appropriate legends were affixed to the share
certificates, warrants and notes issued in such transactions. All recipients
had adequate access, through their relationship with the Company, to
information about the Company.
 
    Through May 31, 1998, the Company had raised approximately $367.0 million
through private sales of debt and equity securities in a series of private
placements with various institutional and other accredited investors and
certain employees of the Company as described below.
 
    CTC Investment. On January 11, 1995, CTC, a predecessor to CCIC, sold (i)
to Ted B. Miller, Jr. and Edward C. Hutcheson, Jr. (collectively, the "Initial
Stockholders") 1,350,000 shares of Class A Common Stock, par value $.01 per
share, of CTC for $270,000 and (ii) to Centennial Fund IV, Berkshire Fund III,
A Limited Partnership (via Berkshire Fund III Investment Corp.) and certain
trusts and natural persons that are now members of Berkshire Investors LLC
(collectively, the "Berkshire Fund III Group") and J. Landis Martin
(collectively, the "CTC Purchasers"), (A) 1,350,000 shares of Class B Common
Stock, par value $.01 per share, of CTC for $270,000, (B) 730,380 shares of
Series A Convertible Preferred Stock, par value $.01 per share, of CTC for
$4,382,280 and (C) $3,867,720 principal amount of Convertible Secured
Subordinated Notes of CTC (the "CTC Notes") for $3,867,720. As of February
1997, all the CTC Notes had been converted into 644,620 shares of Series A
Convertible Preferred Stock of the Company. The proceeds received on January
11, 1995 were used by CTC for the acquisition of towers and ancillary assets
from PCI and for working capital.
 
    Pursuant to a Securities Exchange Agreement (the "Securities Exchange
Agreement"), dated as of April 27, 1995, among the Company, CTC, the Initial
Stockholders and the CTC Purchasers, such parties effectively made CCIC the
holding company of CTC and converted some of the obligations of CTC into
capital stock of CCIC. Transactions pursuant to the Securities Exchange
Agreement included (i) Centennial Fund IV transferring 208,334 shares of CTC
Series A Convertible Preferred Stock to Berkshire Fund III Group in exchange
for $1,250,004 principal amount of CTC Notes, (ii) Berkshire Fund III Group and
J. Landis Martin converting all remaining CTC Notes held by them ($742,452
principal amount) into 123,742 shares of CTC Series A Convertible Preferred
Stock, (iii) each of the outstanding shares of capital stock of CTC being
exchanged for five shares of similar stock of CCIC and (iv) the remaining CTC
Notes ($3,125,268 principal amount) becoming convertible into shares of Series
A Convertible Preferred Stock (all of which CTC Notes were subsequently
converted in February 1997).
 
    As a result of the exchange of CTC capital stock for CCIC capital stock,
each Initial Stockholder received 675,000 shares of Existing Class A Common
Stock, Centennial Fund IV received 1,080,000 shares of common stock and 145,789
shares of Series A Preferred Stock, Mr. Martin received 41,666 shares of Series
A Preferred Stock and Berkshire Fund III Group received 270,000 shares of
common stock and 666,667 shares of Series A Preferred Stock. In July 21, 1995,
Robert F. McKenzie became a party by amendment to the Securities Exchange
Agreement and received 8,333 shares of Series A Preferred Stock.
 
    1996 Investors Investment. Pursuant to a Securities Purchase Agreement,
dated as of July 15, 1996, among the Company, Berkshire Fund III Group,
Centennial Fund IV, J. Landis Martin, Edward C. Hutcheson, Jr. and Robert F.
McKenzie, the Company privately placed 864,568 shares of its Series B
Convertible Preferred Stock, par value $.01 per share ("Series B Convertible
Preferred Stock"), for an aggregate purchase price of $10,374,816. Berkshire
Fund III Group paid $6,000,000
 
                                      II-3
<PAGE>
 
for 500,000 shares, Centennial Fund IV paid $3,724,812 for 310,401 shares, Mr.
Martin paid $500,004 for 41,667 shares, Mr. Hutcheson paid $99,996 for 8,333
shares and Mr. McKenzie paid $50,004 for 4,167 shares. The proceeds received on
July 15, 1996 were used for (i) the purchase of the towers and microwave and
SMR businesses from Motorola in Puerto Rico, (ii) an option payment relating to
the acquisition of TEA and TeleStructures and (iii) working capital.
 
    Berkshire Fund IV Investment. Pursuant to a Securities Purchase Agreement,
dated as of February 14, 1997, among the Company, Centennial Fund V and
Centennial Entrepreneurs Fund V, L.P. (collectively, the "Centennial Fund V
Investors" and, together with Centennial Fund IV, the "Centennial Group"),
Berkshire Fund IV, Limited Partnership (via Berkshire Fund IV Investment
Corp.), and certain trusts and natural persons which are members of Berkshire
Investors LLC (collectively, the "Berkshire Fund IV Group" and, together with
Berkshire Fund III Group, the "Berkshire Partners Group"), PNC Venture Corp.,
Nassau Capital Partners II L.P. ("Nassau Capital"), NAS Partners I L.L.C. ("NAS
Partners" and, together with Nassau Capital, the "Nassau Group"), Fay,
Richwhite Communications Limited ("Fay Richwhite"), J. Landis Martin and Robert
F. McKenzie, the Company privately placed 3,529,832 shares of its Series C
Convertible Preferred Stock, par value $.01 per share ("Series C Convertible
Preferred Stock"), for an aggregate purchase price of $74,126,472. Centennial
Fund V Investors paid $15,464,001 for 736,381 shares, Berkshire Fund IV Group
paid $21,809,991 for 1,038,571 shares, PNC Venture Corp. paid $6,300,000 for
300,000 shares, Nassau Group paid an aggregate of $19,499,991 for 928,571
shares, Fay Richwhite paid $9,999,990 for 476,190 shares, Mr. Martin paid
$999,999 for 47,619 shares and Mr. McKenzie paid $52,500 for 2,500 shares. The
proceeds received on February 14, 1997 were used by the Company to fund a
portion of its investment in CTI.
 
    Hutcheson Investment. In March 1997, Edward C. Hutcheson, Jr. exercised
stock options for 345,000 shares of common stock. The Company repurchased these
shares and 308,435 shares of his Existing Class A Common Stock for $3,422,118.
 
    TEA Investment. In May 1997, in connection with the Company's acquisition
of the stock of TeleStructures, TEA and TeleShare, Inc. (the "TEA Companies"),
the Company issued 535,710 shares of common stock to the shareholders of the
TEA Companies: 241,070 shares to Bruce W. Neurohr, 241,070 shares to Charles H.
Jones and 53,570 shares to Terrel W. Pugh.
 
    Crown Investment. In August 1997, Robert A. Crown and Barbara Crown sold
the assets of Crown Communications to, and merged CNSI and CMSI with,
subsidiaries of the Company. As partial consideration for these transactions,
the Crowns received 7,325,000 shares of common stock. Robert A. Crown and
Barbara Crown are both parties to the Stockholders Agreement and are subject to
its restrictions.
 
    AHA Investment. Pursuant to a Securities Purchase Agreement, dated as of
August 13, 1997, among the Company, American Home Assurance Company ("AHA"),
New York Life Insurance Company ("New York Life"), The Northwestern Mutual Life
Insurance Company ("Northwestern Mutual"), PNC Venture Corp., J. Landis Martin
and affiliates of AHA, the Company privately placed of 292,995 shares of its
Senior Convertible Preferred Stock for an aggregate purchase price of
$29,299,500, together with warrants to purchase 585,990 shares of common stock
at $7.50 per share (subject to adjustment, including weighted average
antidilution adjustments). AHA and its affiliates paid $15,099,500 for 150,995
shares and warrants to purchase 301,990 shares of common stock. New York Life
and Northwestern Mutual each paid $6,000,000 for 60,000 shares and warrants to
purchase 120,000 shares of common stock. PNC Venture Corp. paid $2,000,000 for
20,000 shares and warrants to purchase 40,000 shares of common stock. Mr.
Martin paid $200,000 for 2,000 shares and warrants to purchase 4,000 shares of
common stock. The proceeds received on August 13, 1997 were used by the Company
to fund a portion of the Crown Merger and working capital.
 
                                      II-4
<PAGE>
 
    Harvard Investment. Pursuant to a Securities Purchase Agreement, dated as
of October 31, 1997, among the Company, Berkshire Partners Group, Centennial
Fund V Investors, Nassau Group, Fay Richwhite, Harvard Private Capital
Holdings, Inc. ("Harvard"), Prime VIII, L.P. ("Prime") and the prior purchasers
of Senior Convertible Preferred Stock (other than affiliates of AHA), an
additional 364,500 shares of Senior Convertible Preferred Stock were issued for
an aggregate purchase price of $36,450,000, together with warrants to purchase
729,000 shares of common stock at $7.50 per share (subject to adjustment,
including weighted average antidilution adjustments). Berkshire Partners Group
paid $3,500,000 for 35,000 shares and warrants to purchase 70,000 shares of
common stock. Centennial V Investors paid $1,000,000 for 10,000 shares and
warrants to purchase 20,000 shares of common stock. Nassau Group and Fay
Richwhite each paid $2,500,000 for 25,000 shares and warrants to purchase
50,000 shares of common stock. Harvard paid $14,950,000 for 149,500 shares and
warrants to purchase 299,000 shares of common stock. Prime paid $5,000,000 for
50,000 shares and warrants to purchase 100,000 shares of common stock. AHA paid
$1,500,000 for 15,000 shares and warrants to purchase 30,000 shares of common
stock. New York Life paid $300,000 for 3,000 shares and warrants to purchase
6,000 shares of common stock. Northwestern Mutual paid $4,000,000 for 40,000
shares and warrants to purchase 80,000 shares of common stock. PNC Venture
Corp. paid $1,000,000 for 10,000 shares and warrants to purchase 20,000 shares
of common stock. J. Landis Martin paid $200,000 for 2,000 shares and warrants
to purchase 4,000 shares of common stock.
 
    Employee Purchases. On October 30, 1995, in connection with an employment
agreement, an employee of the Company purchased 83,330 shares of common stock
from the Company at $1.20 per share. On October 1, 1996, David L. Ivy purchased
50,000 shares of common stock from the Company at $2.40 per share. On February
3, 1997, John L. Gwyn purchased 2,500 shares of common stock from the Company
at $4.20 per share. On June 12, 1997, an employee of the Company purchased
2,500 shares of common stock from the Company at $4.20 per share.
 
    Payment of Consultants. On January 28, 1998, in connection with the
provision of consulting services to the Company, the Company issued to two
consultants options exercisable for an aggregate of 23,135 shares of common
stock at an exercise price of $4.76 per share. On June 30, 1998, in connection
with the provision of consulting services to the Company, the Company issued to
two consultants an aggregate of 30,425 shares of common stock at a valuation of
$7.50 per share.
 
    Option Exercises. On July 30, 1997, Robert F. McKenzie, a director of the
Company, exercised options for 6,250 shares of common stock at an exercise
price of $1.20 per share and on August 8, 1997, exercised options for 11,875
shares of common stock at an exercise price of $4.20 per share.
 
    10 5/8% Senior Discount Notes due 2007. On November 25, 1997, the Company
privately placed under Rule 144A and Regulation S of the Securities Act $251.0
million principal amount at maturity ($150,010,150 initial accreted value) of
its 10 5/8% Senior Discount Notes due 2007, yielding net proceeds to the
Company of approximately $143.7 million after deducting discounts and estimated
fees and expenses. Lehman Brothers Inc. and Credit Suisse First Boston
Corporation were the initial purchasers of such securities.
 
    Roll-Up. On August 21, 1998, we consummated a share exchange with certain
shareholders of CTI, which increased our ownership of CTI from approximately
34.3% to 80.0%. We issued 20,867,700 shares of our common and 11,340,000 shares
of our Class A common stock, with such shares valued at an aggregate of $418.7
million (based on the price per share to the public in the IPO).
 
    12 3/4% Senior Exchangeable Preferred Stock due 2010. On December 21, 1998,
the Company privately placed under Rule 144A and Regulation S of the Securities
Act 200,000 shares of its 12 3/4% Senior Exchangeable Preferred Stock due 2010,
each share of which has a liquidation preference of $1,000. Lehman Brothers,
Salomon Smith Barney and Goldman, Sachs & Co. were the initial purchasers of
such securities.
 
                                      II-5
<PAGE>
 
Item 16. Exhibits and Financial Statement Schedules
 
<TABLE>
<CAPTION>
 Exhibit
   No.                           Description of Exhibit
 -------                         ----------------------
 <C>     <S>
    *1.1 Form of Underwriting Agreement
    *1.2 Form of International Underwriting Agreement
   **2.1 Asset Purchase and Merger Agreement among Crown Network Systems, Inc.,
         Crown Mobile Systems, Inc., Robert A. Crown, Barbara Crown and Castle
         Acquisition Corp. I, Castle Acquisition Corp. II, Castle Tower Holding
         Corp. dated July 11, 1997
 
   **2.2 First Amended and Restated Asset Purchase and Merger Agreement among
         Crown Network Systems, Inc., Crown Mobile Systems, Inc., Robert A.
         Crown, Barbara Crown and Castle Acquisition Corp. I, Castle
         Acquisition Corp. II, Castle Tower Holding Corp. dated July 11, 1997,
         as amended and restated on August 14, 1997
   **2.3 Stock Purchase Agreement by and between Castle Tower Holding Corp.,
         Bruce W. Neurohr, Charles H. Jones, Ronald J. Minnich, Ferdinand G.
         Neurohr and Terrel W. Pugh dated May 12, 1997 ("TEA Stock Purchase
         Agreement")
  ***2.4 Share Exchange Agreement among Castle Transmission Services (Holdings)
         Ltd., Crown Castle International Corp., T 1 Diffusion de France
         International S.A., Digital Future Investments B.V. and certain
         shareholders of Castle Transmission Services (Holdings) Ltd. dated as
         of April 24, 1998
 ****3.1 Restated Certificate of Incorporation of Crown Castle International
         Corp.
 ****3.2 Amended and Restated By-laws of Crown Castle International Corp.
 ****3.3 Certificate of Designations, Preferences and Relative, Participating,
         Optional and other Special Rights of Preferred Stock and
         Qualifications, Limitations and Restrictions thereof of 12 3/4% Senior
         Exchangeable Preferred Stock due 2010 and 12 3/4% Series B Senior
         Exchangeable Preferred Stock due 2010 of Crown Castle International
         Corp.
   **4.1 Indenture between Crown Castle International Corp. and United States
         Trust Company of New York, as Trustee (including exhibits).
   **4.2 Amended and Restated Stockholders Agreement among Castle Tower Holding
         Corp., Edward C. Hutcheson, Jr., Ted B. Miller, Jr., Robert A. Crown
         and Barbara Crown and the persons listed on Schedule I thereto dated
         August 15, 1997
   **4.3 Article Fourth of Certificate of Incorporation of Castle Tower Holding
         Corp. (included in Exhibits 3.1 through 3.5)
   **4.4 Trust Deed related to (Pounds)125,000,000 9 percent. Guaranteed Bonds
         due 2007 among Castle Transmission (Finance) PLC, as Issuer, Castle
         Transmission International Ltd. and Castle Transmission Services
         (Holdings) Ltd., as Guarantors, and The Law Debenture Trust
         Corporation p.l.c., as Trustee, dated May 21, 1997
   **4.5 First Supplemental Trust Deed related to (Pounds)125,000,000 9 percent
         Guaranteed Bonds due 2007 among Castle Transmission (Finance) PLC, as
         Issuer, Castle Transmission International Ltd. and Castle Transmission
         Services (Holdings) Ltd., as Guarantors, and The Law Debenture Trust
         Corporation p.l.c., as Trustee, dated October 17, 1997
  ***4.6 Specimen Certificate of Common Stock
 ****4.7 Indenture dated as of December 21, 1998 between Crown Castle
         International Corp. and the United States Trust Company, as Trustee
         (including exhibits)
      *5 Opinion of Cravath, Swaine & Moore.
  **10.1 Registration Rights Agreement by and among Crown Castle International
         Corp. and Lehman Brothers Inc. and Credit Suisse First Boston
         Corporation dated as of November 25, 1997
 ***10.2 Amended and Restated Loan Agreement by and among Crown Communication
         Inc., Crown Castle International Corp. de Puerto Rico, Key Corporate
         Capital Inc. and certain lenders dated July 10, 1998
</TABLE>
 
 
                                      II-6
<PAGE>
 
<TABLE>
<CAPTION>
 Exhibit
   No.                           Description of Exhibit
 -------                         ----------------------
 <C>     <S>
 **10.8  Amended and Restated Limited Holdco Guaranty by Crown Castle
         International Corp., in favor of KeyBank National Association, as
         Agent, dated November 25, 1997
 **10.9  Memorandum of Understanding regarding Management and Governance of
         Castle Tower Holding Corp. and Crown Communications, Inc. dated August
         15, 1997
 **10.10 Site Commitment Agreement between Nextel Communications, Inc. and
         Castle Tower Corporation dated July 11, 1997
 
 **10.11 Independent Contractor Agreement by and between Crown Network Systems,
         Inc. and Sprint Spectrum L.P. dated July 8, 1996, including addendum
         dated November 12, 1997
 
 **10.12 Independent Contractor Agreement between Crown Network Systems, Inc.
         and Powerfone, Inc. d/b/a Nextel Communications dated September 30,
         1996
 
 **10.13 Independent Contractor Agreement by and between APT Pittsburgh Limited
         Partnership and Crown Network Systems, Inc. dated December 3, 1996
 
 **10.14 Master Lease Agreement between Sprint Spectrum, L.P. and Robert Crown
         d/b/a Crown Communications dated June 11, 1996 ("Sprint Master Lease
         Agreement")
 
 **10.15 First Amendment to Sprint Master Lease Agreement, dated July 5, 1996
         (included in Exhibit 10.14)
 
 **10.16 Second Amendment to Sprint Master Lease Agreement, dated January 27,
         1997 (included in Exhibit 10.14)
 
 **10.17 Master Lease Agreement between Powerfone, Inc. d/b/a Nextel
         Communications and Robert A. Crown d/b/a Crown Communications dated
         October 3, 1996
 
 **10.18 Master Lease Agreement between APT Pittsburgh Limited Partnership and
         Robert Crown d/b/a Crown Communications dated December 3, 1996
 
 **10.19 Master Tower Lease Agreement between Cellco Partnership d/b/a Bell
         Atlantic NYNEX Mobile, Pittsburgh SMSA, L.P. and Pennsylvania RSN No.
         6(II) and Robert A. Crown d/b/a Crown Communications dated December
         29, 1995, as amended by a letter agreement dated as of October 28,
         1997
 
 **10.20 Master Tower Lease Agreement between Cellco Partnership d/b/a Bell
         Atlantic NYNEX Mobile, Pittsburgh SMSA, L.P. and Pennsylvania RSN No.
         6(II) and Robert A. Crown d/b/a Crown Communications dated December
         29, 1995, as amended by a letter agreement dated as of October 28,
         1997
 
 **10.21 Castle Tower Holding Corp. 1995 Stock Option Plan (Third Restatement)
 
 **10.22 Services Agreement between Castle Transmission International Ltd.
         (formerly known as Castle Transmission Services Ltd.) and Castle Tower
         Holding Corp. dated February 28, 1997
 
 **10.23 Shareholders Agreement among Berkshire Fund IV Investment Corp.,
         Berkshire Investors LLC, Berkshire Partners LLC, Candover Investments
         PLC, Candover (Trustees) Limited, Candover Partners Limited (as
         general partner for four limited partnerships), Castle Tower Holding
         Corp., T 1 Diffusion de France International S.A., and Diohold Limited
         (now known as Castle Transmission Services (Holdings) Ltd.) dated
         January 23, 1997
 
 **10.24 First Amendment to Amended and Restated Stockholders Agreement by and
         among Crown Castle International Corp., Edward C. Hutcheson, Jr., Ted
         B. Miller, Jr., Robert A. Crown and Barbara Crown and the persons
         listed as Investors dated January 28, 1998
 
 **10.25 Third Amendment to Sprint Master Lease Agreement, dated February 12,
         1998
 
</TABLE>
 
 
                                      II-7
<PAGE>
 
<TABLE>
<CAPTION>
  Exhibit
    No.                           Description of Exhibit
  -------                         ----------------------
 <C>       <S>
 ****10.26 Stockholders Agreement between Crown Castle International Corp. and
           certain stockholders listed on Schedule 1 thereto, dated as of
           August 21, 1998 as amended by Amendment No. 1, dated as of the 12th
           day of November, 1998
 
  ***10.27 Agreement among Castle Transmission Services (Holdings) Ltd.,
           Digital Future Investments B.V., Berkshire Partners LLC and certain
           shareholders of Castle Transmission Services (Holdings) Ltd. for the
           sale and purchase of certain shares of Castle Transmission Services
           (Holdings) Ltd., for the amendment of the Shareholders Agreement in
           respect of Castle Transmission Services (Holdings) Ltd. and for the
           granting of certain options dated April 24, 1998
 
 ****10.28 Governance Agreement among Crown Castle International Corp.,
           TeleDiffusion de France International S.A. and Digital Future
           Investments B.V., dated as of August 21, 1998
 
 ****10.29 Form of Severance Agreement entered into between Crown Castle
           International Corp. and Ted Miller, George Reese, John Gwyn, Charles
           Green, Alan Rees, Blake Hawk and David Ivy
 
 ****10.30 Shareholders Agreement among Crown Castle International Corp., T 1
           Diffusion de France International S.A. and Castle Transmission
           Services (Holdings) Limited dated August 1998
 
  ***10.31 Site Sharing Agreement between National Transcommunications Limited
           and The British Broadcasting Corporation dated September 10, 1991
 
  ***10.32 Transmission Agreement between The British Broadcasting Corporation
           and Castle Transmission Services Limited dated February 27, 1997
 
  ***10.33 Digital Terrestrial Television Transmission Agreement between The
           British Broadcasting Corporation and Castle Transmission
           International Ltd. dated February 10, 1998
 
  ***10.34 Agreement for the Provision of Digital Terrestrial Television
           Distribution and Transmission Services between British Digital
           Broadcasting plc and Castle Transmission International Ltd. dated
           December 18, 1997
 
  ***10.35 Loan Amendment Agreement among Castle Transmission International,
           Castle Transmission Services (Holdings) Ltd. and certain lenders
           dated May 21, 1997
 
  ***10.36 Crown Castle International Corp. 1995 Stock Option Plan (Fourth
           Restatement)
 
  ***10.37 Contract between British Telecommunications PLC and Castle
           Transmission International Inc. for the Provision of Digital
           Terrestrial Television Network Distribution Service dated May 13,
           1998
 
  ***10.38 Site Marketing Agreement dated June 25, 1998 between BellSouth
           Mobility Inc. and Crown Communication Inc.
 
  ***10.39 Commitment Agreement between the British Broadcasting Corporation,
           Castle Tower Holding Corp., T 1 Diffusion de France International
           S.A. and T 1 Diffusion de France S.A.
 
 ****10.40 Amended and Restated Services Agreement between Castle Transmission
           International Limited and T 1 Diffusion de France S.A. dated August
           1998
 
  ***10.41 Castle Transmission Services (Holdings) Ltd. All Employee Share
           Option Scheme dated as of January 23, 1998
 
  ***10.42 Rules of the Castle Transmission Services (Holdings) Ltd. Bonus
           Share Plan
 
 ****10.43 Employee Benefit Trust between Castle Transmission Services
           (Holdings) Ltd. and Castle Transmission (Trustees) Limited
</TABLE>
 
                                      II-8
<PAGE>
 
<TABLE>
<CAPTION>
   Exhibit
     No.                            Description of Exhibit
   -------                          ----------------------
 <C>          <S>
     ***10.44 Castle Transmission Services (Holdings) Ltd. Unapproved Share
              Option Scheme dated as of January 23, 1998
 
     ***10.45 Amending Agreement between the British Broadcasting Corporation
              and Castle Transmission International Limited dated July 16, 1998
 
    ****10.46 Rights Agreement dated as of August 21, 1998, between Crown
              Castle International Corp. and Chasemellon Shareholder Services
              L.L.C.
 
     ***10.47 Deed of Grant of Option between Castle Transmission Series
              (Holdings) Ltd. and George Reese dated January 23, 1998
 
     ***10.48 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and David Ivy dated January 23, 1998
 
     ***10.49 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and David Ivy dated April 23, 1998
 
     ***10.50 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and Ted B. Miller, Jr., dated April 23, 1998
 
     ***10.51 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and Ted B. Miller, Jr., dated January 23, 1998
 
     ***10.52 Memorandum Regarding Proposed Initial Public Offering and Certain
              Transitional Changes Affecting Management dated July 2, 1998,
              between Crown Castle International Corp. and Robert A. and
              Barbara A. Crown
 
     ***10.53 Services Agreement dated July 2, 1998, by and between Crown
              Castle International Corp. and Robert A. and Barbara A. Crown
 
    ****10.56 Registration Rights Agreement dated as of December 21, 1998 by
              and among Crown Castle International Corp. and Lehman Brothers,
              Salomon Smith Barney and Goldman, Sachs & Co.
 
   *****10.57 Formation Agreement relating to the formation of Crown Atlantic
              Company LLC, Crown Atlantic Holding Sub LLC, and Crown Atlantic
              Holding Company LLC dated December 1998
 
  ******10.58 Letter of Agreement between Crown Castle International Corp. and
              BellSouth Mobility Inc. dated March 5, 1999 (including the Form
              of Sublease)
 
 *******10.59 Asset Purchase Agreement among Crown Castle International Corp.,
              CCP Inc., Powertel Atlanta Towers, LLC, Powertel Birmingham
              Towers, LLC, Powertel Jacksonville Towers, LLC, Powertel Kentucky
              Towers, LLC, Powertel Memphis Towers, LLC and Powertel, Inc.
              dated March 15, 1999
 
    ****10.60 Framework Agreement between One2One and Castle Transmission
              International Ltd. dated March 5, 1999
    ****10.61 Indenture between Crown Castle International Corp. and United
              States Trust Company of New York dated March 15, 1999
    ****10.62 Registration Rights Agreement among Crown Castle International
              Corp. and Goldman Sachs Credit Partners LP, Salomon Brothers
              Holding Company Inc. and Credit Suisse First Boston dated March
              15, 1999
    ****10.63 Escrow Agreement among Crown Castle International Corp., Goldman
              Sachs Credit Partners LP, Salomon Brothers Holding Company Inc.,
              Credit Suisse First Boston and United States Trust Company of New
              York dated March 15, 1999
    ****10.64 Term Loan Agreement among Crown Castle International Corp. and
              Goldman Sachs Credit Partners LP, Salomon Brothers Holding
              Company Inc. and Credit Suisse First Boston dated March 15, 1999
 
</TABLE>
 
 
                                      II-9
<PAGE>
 
<TABLE>
<CAPTION>
 Exhibit
   No.                      Description of Exhibit
 -------                    ----------------------
 <C>      <S>
   ****11 Computation of Net Loss per Common Share
 
   ****12 Computation of Ratio of Earnings to Fixed Charges
 
   ****21 Subsidiaries of Crown Castle International Corp.
 
     23.1 Consent of KPMG LLP
 
    *23.2 Consent of Cravath, Swaine & Moore (included in Exhibit 5)
 ****27.1 Financial Data Schedule
</TABLE>
- --------
      * To be filed by amendment.
     ** Incorporated by reference to the exhibits with the corresponding
        exhibit numbers in the Registration Statement on Form S-4 previously
        filed by the Registrant (Registration No. 333-43873).
    *** Incorporated by reference to the exhibits with the corresponding
        exhibit numbers in the Registration Statement on Form S-1 previously
        filed by the Registrant (Registration No. 333-57283).
   **** Incorporated by reference to the exhibits with the corresponding
        exhibit numbers in the Registration Statement on Form S-4 previously
        filed by the Registrant (Registration No. 333-71715).
  ***** Incorporated by reference to the exhibit previously filed by the
        Registrant on Form 8-K (Registration No. 0-24737) dated December 9,
        1998.
 ****** Incorporated by reference to the exhibit previously filed by the
        Registrant on Form 8-K (Registration No. 0-24737) dated March 8, 1999.
******* Incorporated by reference to the exhibit previously filed by the
        Registrant on Form 8-K (Registration No. 0-24737) dated March 15, 1999.
 
Schedule I--Condensed Financial Information of Registrant
 
    All other schedules are omitted because they are not applicable or because
the required information is contained in the financial statements or notes
thereto included in this Registration Statement.
 
Item 17. Undertakings
 
    Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Securities Act") may be permitted to directors, officers and
controlling persons of the Registrant pursuant to the foregoing provisions, or
otherwise, the Registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public
policy as expressed in the Securities Act and is, therefore, unenforceable. In
the event that a claim for indemnification against such liabilities (other than
the payment by the Registrant of expenses incurred or paid by a director,
officer or controlling person of the Registrant in the successful defense of
any action, suit or proceeding) is asserted by such director, officer or
controlling person in connection with the securities being registered, the
Registrant will, unless in the opinion of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate jurisdiction
the question whether such indemnification by it is against public policy as
expressed in the Securities Act and will be governed by the final adjudication
of such issue.
 
    The undersigned Registrant hereby undertakes that:
 
      (1) For purposes of determining any liability under the Securities Act,
the information omitted from the form of prospectus filed as part of this
registration statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4) or 497(h)
under the Securities Act shall be deemed to be part of this registration
statement as of the time it was declared effective.
 
      (2) For the purpose of determining any liability under the Securities
Act, each post-effective amendment that contains a form of prospectus shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
 
                                     II-10
<PAGE>
 
                                   SIGNATURES
   
    Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Houston, State of Texas,
on this 14th day of April, 1999.     
 
                                          CROWN CASTLE INTERNATIONAL CORP.,
                                                 
                                              /s/ Charles C. Green, III     
                                             
                                          by      
                                            -----------------------------------
                                            Name: Charles C. Green, III
                                            Title: Executive Vice President
                                            and Chief Financial Officer
          
    Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities indicated on this 14th day of April, 1999.     
 
<TABLE>   
<CAPTION>
              Signature                                 Title
              ---------                                 -----
 
<S>                                     <C>
                  *                     Chief Executive Officer and Vice
______________________________________   Chairman of the Board (Principal
          Ted B. Miller, Jr.             Executive Officer)
 
                  *                     President and Director
______________________________________
             David L. Ivy
 
      /s/ Charles C. Green, III         Executive Vice President and Chief
______________________________________   Financial Officer (Principal
        Charles C. Green, III            Financial Officer)
 
                  *                     Senior Vice President, Chief
______________________________________   Accounting Officer and Corporate
         Wesley D. Cunningham            Controller (Principal Accounting
                                         Officer)
 
                  *                     Chairman of the Board
______________________________________
            Carl Ferenbach
 
                  *                                    Director
______________________________________
            Michel Azibert
 
                  *                                    Director
______________________________________
           Bruno Chetaille
 
</TABLE>    
 
 
                                     II-11
<PAGE>
 
<TABLE>   
<CAPTION>
              Signature                                 Title
              ---------                                 -----
 
<S>                                     <C>
                  *                                    Director
______________________________________
           Robert A. Crown
 
                  *                                    Director
______________________________________
           Randall A. Hack
 
                  *                                    Director
______________________________________
          Robert F. McKenzie
 
                  *                                    Director
______________________________________
          William A. Murphy
 
                  *                                    Director
______________________________________
          Jeffrey H. Schutz
 
      /s/ Charles C. Green, III
______________________________________
        Charles C. Green, III
           Attorney-in-Fact
</TABLE>    
 
                                     II-12
<PAGE>
 
                        CROWN CASTLE INTERNATIONAL CORP.
 
           SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT
 
                         BALANCE SHEET (Unconsolidated)
                (In thousands of dollars, except share amounts)
<TABLE>
<CAPTION>
                                                             December 31,
                                                         ---------------------
                                                           1997        1998
                                                         ---------  ----------
<S>                                                      <C>        <C>
                         ASSETS
Current assets:
 Cash and cash equivalents.............................. $  53,092  $   37,907
 Receivables and other current assets...................       424         957
 Advances to subsidiaries, net..........................     2,611      13,711
                                                         ---------  ----------
   Total current assets.................................    56,127      52,575
Property and equipment, net of accumulated depreciation
 of $27 and $875 at December 31, 1997 and 1998,
 respectively...........................................       808       4,255
Investment in subsidiaries..............................   232,229   1,041,788
Investments in affiliates...............................    59,082       2,258
Deferred financing costs and other assets, net of
 accumulated amortization of $69 and $814 at December
 31, 1997 and 1998, respectively........................     7,075       7,227
                                                         ---------  ----------
                                                         $ 355,321  $1,108,103
                                                         =========  ==========
          LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
 Accounts payable and other accrued liabilities......... $   1,187  $    1,379
                                                         ---------  ----------
   Total current liabilities............................     1,187       1,379
Long-term debt..........................................   151,593     168,099
                                                         ---------  ----------
   Total liabilities....................................   152,780     169,478
                                                         ---------  ----------
Redeemable preferred stock, $.01 par value; 10,000,000
 shares authorized:
 12 3/4% Senior Exchangeable Preferred Stock; shares
  issued: December 31, 1997--none and December 31,
  1998--200,000 (stated at mandatory redemption and
  aggregate liquidation value)..........................        --     201,063
 Senior Convertible Preferred Stock; shares issued:
  December 31, 1997--657,495 and
  December 31, 1998--none (stated at redemption value;
  aggregate liquidation value of $68,916)...............    67,948          --
 Series A Convertible Preferred Stock; shares issued:
  December 31, 1997--1,383,333 and December 31, 1998--
  none (stated at redemption and aggregate liquidation
  value)................................................     8,300          --
 Series B Convertible Preferred Stock; shares issued:
  December 31, 1997--864,568 and December 31, 1998--none
  (stated at redemption and aggregate liquidation
  value)................................................    10,375          --
 Series C Convertible Preferred Stock; shares issued:
  December 31, 1997--3,529,832 and December 31, 1998--
  none (stated at redemption and aggregate liquidation
  value)................................................    74,126          --
                                                         ---------  ----------
     Total redeemable preferred stock...................   160,749     201,063
                                                         ---------  ----------
Stockholders' equity:
 Common stock, $.01 par value; 690,000,000 shares
  authorized:
 Class A Common Stock; shares issued: December 31,
  1997--1,041,565 and December 31, 1998--none...........         2          --
 Class B Common Stock; shares issued: December 31,
  1997--9,367,165 and December 31, 1998--none...........        19          --
 Common Stock; shares issued: December 31, 1997--none
  and December 31, 1998--83,123,873.....................        --         831
 Class A Common Stock; shares issued: December 31,
  1997--none and December 31, 1998--11,340,000..........        --         113
 Additional paid-in capital.............................    58,248     795,153
 Cumulative foreign currency translation adjustment.....       562       1,690
 Accumulated deficit....................................   (17,039)    (60,225)
                                                         ---------  ----------
   Total stockholders' equity...........................    41,792     737,562
                                                         ---------  ----------
                                                         $ 355,321  $1,108,103
                                                         =========  ==========
</TABLE>
     See notes to consolidated financial statements and accompanying notes.
 
                                      S-1
<PAGE>
 
                        CROWN CASTLE INTERNATIONAL CORP.
 
     SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT--(Continued)
 
                    STATEMENT OF OPERATIONS (Unconsolidated)
                           (In thousands of dollars)
 
<TABLE>
<CAPTION>
                                                    Years Ended December 31,
                                                    ---------------------------
                                                     1996      1997      1998
                                                    -------  --------  --------
<S>                                                 <C>      <C>       <C>
Other revenues....................................  $    --  $    329  $    399
Interest and other income.........................      171     2,028     1,354
General and administrative expenses...............       --      (149)   (2,975)
Corporate development expenses....................   (1,249)   (3,867)   (4,404)
Non-cash compensation charges.....................       --        --    (9,775)
Depreciation and amortization.....................       --       (27)     (720)
Interest expense and amortization of deferred
 financing costs..................................       --    (4,594)  (17,251)
                                                    -------  --------  --------
Loss before income taxes and equity in earnings
 (losses) of subsidiaries and unconsolidated
 affiliate........................................   (1,078)   (6,280)  (33,372)
Credit (provision) for income taxes...............       49       (49)       --
Equity in earnings (losses) of subsidiaries.......       72    (4,475)   (6,458)
Equity in earnings (losses) of unconsolidated
 affiliate........................................       --    (1,138)    2,055
                                                    -------  --------  --------
Net loss..........................................     (957)  (11,942)  (37,775)
Dividends on preferred stock......................       --    (2,199)   (5,411)
                                                    -------  --------  --------
Net loss after deduction of dividends on preferred
 stock............................................  $  (957) $(14,141) $(43,186)
                                                    =======  ========  ========
</TABLE>
 
 
     See notes to consolidated financial statements and accompanying notes.
 
                                      S-2
<PAGE>
 
                        CROWN CASTLE INTERNATIONAL CORP.
 
     SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT--(Continued)
 
                    STATEMENT OF CASH FLOWS (Unconsolidated)
                           (In thousands of dollars)
 
<TABLE>
<CAPTION>
                                                    Years Ended December 31,
                                                    --------------------------
                                                     1996     1997      1998
                                                    ------  --------  --------
<S>                                                 <C>     <C>       <C>
Cash flows from operating activities:
  Net loss......................................... $ (957) $(11,942) $(37,775)
  Adjustments to reconcile net loss to net cash
   used for operating activities:
    Amortization of deferred financing costs and
     discount on long-term debt....................     --     1,652    17,251
    Non-cash compensation charges..................     --        --     9,775
    Equity in losses (earnings) of subsidiaries....    (72)    4,475     6,458
    Depreciation and amortization..................     --        27       720
    Equity in losses (earnings) of unconsolidated
     affiliate.....................................     --     1,138    (2,055)
    Increase (decrease) in accounts payable and
     other accrued liabilities.....................    130      (103)    1,352
    Decrease (increase) in receivables and other
     assets........................................ (1,122)      551    (1,413)
                                                    ------  --------  --------
      Net cash used for operating activities....... (2,021)   (4,202)   (5,687)
                                                    ------  --------  --------
Cash flows from investing activities:
  Investment in subsidiaries.......................     --   (89,989) (332,065)
  Net advances to subsidiaries.....................   (288)   (2,223)  (11,100)
  Capital expenditures.............................     --      (835)   (3,624)
  Investments in affiliates........................ (2,101)  (59,487)       --
                                                    ------  --------  --------
      Net cash used for investing activities....... (2,389) (152,534) (346,789)
                                                    ------  --------  --------
Cash flows from financing activities:
  Proceeds from issuance of capital stock.......... 10,503   139,867   339,929
  Incurrence of financing costs....................     --    (5,908)   (1,755)
  Purchase of capital stock........................     --    (2,132)     (883)
  Proceeds from issuance of long-term debt.........     --   150,010        --
  Principal payments on long-term debt.............     --   (78,102)       --
                                                    ------  --------  --------
      Net cash provided by financing activities.... 10,503   203,735   337,291
                                                    ------  --------  --------
Net increase (decrease) in cash and cash
 equivalents.......................................  6,093    46,999   (15,185)
Cash and cash equivalents at beginning of year.....     --     6,093    53,092
                                                    ------  --------  --------
Cash and cash equivalents at end of year........... $6,093  $ 53,092  $ 37,907
                                                    ======  ========  ========
Supplementary schedule of noncash investing and
 financing activities:
  Issuance of long-term debt in connection with
   acquisitions.................................... $   --  $ 78,102  $     --
  Issuance of common stock in connection with
   acquisitions....................................     --    57,189   420,964
  Conversion of subsidiary's Convertible Secured
   Subordinated Notes to Series A Convertible
   Preferred Stock.................................     --     3,657        --
Supplemental disclosure of cash flow information:
  Interest paid.................................... $   --  $  2,943  $     --
  Income taxes paid................................     --        --        --
</TABLE>
 
     See notes to consolidated financial statements and accompanying notes.
 
                                      S-3
<PAGE>
 
                        CROWN CASTLE INTERNATIONAL CORP.
 
     SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT--(Continued)
 
                 NOTES TO FINANCIAL STATEMENTS (Unconsolidated)
 
1.Investment in Subsidiaries
 
    The Company's investment in subsidiaries is presented in the accompanying
unconsolidated financial statements using the equity method of accounting.
Under the terms of the Senior Credit Facility, the CTI Credit Facility and the
CTI Bonds, the Company's subsidiaries are limited in the amount of dividends
which can be paid to the Company. For CCI, the amount of such dividends is
limited to (i) $6,000,000 per year until October 31, 2002, and $33,000,000 per
year thereafter, and (ii) an amount to pay income taxes attributable to the
Company's Restricted Subsidiaries. CTI is effectively precluded from paying
dividends. The restricted net assets of the Company's subsidiaries totaled
approximately $826,321,000 at December 31, 1998.
 
2.Long-term Debt
 
    Long-term debt consists of the Company's 10 5/8% Senior Discount Notes due
2007.
 
3.Income Taxes
 
    Income taxes reported in the accompanying unconsolidated financial
statements are determined by computing income tax assets and liabilities on a
consolidated basis, for the Company and members of its consolidated federal
income tax return group, and then reducing such consolidated amounts for the
amounts recorded by the Company's subsidiaries on a separate tax return basis.
 
 
 
 
                                      S-4
<PAGE>
 
                                 EXHIBIT INDEX
<TABLE>
<CAPTION>
 Exhibit
   No.                           Description of Exhibit
 -------                         ----------------------
 
 <C>     <S>
    *1.1 Form of Underwriting Agreement
 
    *1.2 Form of International Underwriting Agreement
 
   **2.1 Asset Purchase and Merger Agreement among Crown Network Systems, Inc.,
         Crown Mobile Systems, Inc., Robert A. Crown, Barbara Crown and Castle
         Acquisition Corp. I, Castle Acquisition Corp. II, Castle Tower Holding
         Corp. dated July 11, 1997
 
   **2.2 First Amended and Restated Asset Purchase and Merger Agreement among
         Crown Network Systems, Inc., Crown Mobile Systems, Inc., Robert A.
         Crown, Barbara Crown and Castle Acquisition Corp. I, Castle
         Acquisition Corp. II, Castle Tower Holding Corp. dated July 11, 1997,
         as amended and restated on August 14, 1997
 
   **2.3 Stock Purchase Agreement by and between Castle Tower Holding Corp.,
         Bruce W. Neurohr, Charles H. Jones, Ronald J. Minnich, Ferdinand G.
         Neurohr and Terrel W. Pugh dated May 12, 1997 ("TEA Stock Purchase
         Agreement")
 
  ***2.4 Share Exchange Agreement among Castle Transmission Services (Holdings)
         Ltd., Crown Castle International Corp., T 1 Diffusion de France
         International S.A., Digital Future Investments B.V. and certain
         shareholders of Castle Transmission Services (Holdings) Ltd. dated as
         of April 24, 1998
 
 ****3.1 Restated Certificate of Incorporation of Crown Castle International
         Corp.
 
 ****3.2 Amended and Restated By-laws of Crown Castle International Corp.
 
 ****3.3 Certificate of Designations, Preferences and Relative, Participating,
         Optional and other Special Rights of Preferred Stock and
         Qualifications, Limitations and Restrictions thereof of 12 3/4% Senior
         Exchangeable Preferred Stock due 2010 and 12 3/4% Series B Senior
         Exchangeable Preferred Stock due 2010 of Crown Castle International
         Corp.
 
   **4.1 Indenture between Crown Castle International Corp. and United States
         Trust Company of New York, as Trustee (including exhibits).
 
   **4.2 Amended and Restated Stockholders Agreement among Castle Tower Holding
         Corp., Edward C. Hutcheson, Jr., Ted B. Miller, Jr., Robert A. Crown
         and Barbara Crown and the persons listed on Schedule I thereto dated
         August 15, 1997
 
   **4.3 Article Fourth of Certificate of Incorporation of Castle Tower Holding
         Corp. (included in Exhibits 3.1 through 3.5)
 
   **4.4 Trust Deed related to (Pounds)125,000,000 9 percent. Guaranteed Bonds
         due 2007 among Castle Transmission (Finance) PLC, as Issuer, Castle
         Transmission International Ltd. and Castle Transmission Services
         (Holdings) Ltd., as Guarantors, and The Law Debenture Trust
         Corporation p.l.c., as Trustee, dated May 21, 1997
 
   **4.5 First Supplemental Trust Deed related to (Pounds)125,000,000 9 percent
         Guaranteed Bonds due 2007 among Castle Transmission (Finance) PLC, as
         Issuer, Castle Transmission International Ltd. and Castle Transmission
         Services (Holdings) Ltd., as Guarantors, and The Law Debenture Trust
         Corporation p.l.c., as Trustee, dated October 17, 1997
 
  ***4.6 Specimen Certificate of Common Stock
 
 ****4.7 Indenture dated as of December 21, 1998 between Crown Castle
         International Corp. and the United States Trust Company, as Trustee
         (including exhibits)
 
      *5 Opinion of Cravath, Swaine & Moore.
 
  **10.1 Registration Rights Agreement by and among Crown Castle International
         Corp. and Lehman Brothers Inc. and Credit Suisse First Boston
         Corporation dated as of November 25, 1997
 
 ***10.2 Amended and Restated Loan Agreement by and among Crown Communication
         Inc., Crown Castle International Corp. de Puerto Rico, Key Corporate
         Capital Inc. and certain lenders dated July 10, 1998
 
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 Exhibit
   No.                           Description of Exhibit
 -------                         ----------------------
 <C>     <S>
 **10.8  Amended and Restated Limited Holdco Guaranty by Crown Castle
         International Corp., in favor of KeyBank National Association, as
         Agent, dated November 25, 1997
 
 **10.9  Memorandum of Understanding regarding Management and Governance of
         Castle Tower Holding Corp. and Crown Communications, Inc. dated August
         15, 1997
 
 **10.10 Site Commitment Agreement between Nextel Communications, Inc. and
         Castle Tower Corporation dated July 11, 1997
 
 **10.11 Independent Contractor Agreement by and between Crown Network Systems,
         Inc. and Sprint Spectrum L.P. dated July 8, 1996, including addendum
         dated November 12, 1997
 
 **10.12 Independent Contractor Agreement between Crown Network Systems, Inc.
         and Powerfone, Inc. d/b/a Nextel Communications dated September 30,
         1996
 
 **10.13 Independent Contractor Agreement by and between APT Pittsburgh Limited
         Partnership and Crown Network Systems, Inc. dated December 3, 1996
 
 **10.14 Master Lease Agreement between Sprint Spectrum, L.P. and Robert Crown
         d/b/a Crown Communications dated June 11, 1996 ("Sprint Master Lease
         Agreement")
 
 **10.15 First Amendment to Sprint Master Lease Agreement, dated July 5, 1996
         (included in Exhibit 10.14)
 
 **10.16 Second Amendment to Sprint Master Lease Agreement, dated January 27,
         1997 (included in Exhibit 10.14)
 
 **10.17 Master Lease Agreement between Powerfone, Inc. d/b/a Nextel
         Communications and Robert A. Crown d/b/a Crown Communications dated
         October 3, 1996
 
 **10.18 Master Lease Agreement between APT Pittsburgh Limited Partnership and
         Robert Crown d/b/a Crown Communications dated December 3, 1996
 
 **10.19 Master Tower Lease Agreement between Cellco Partnership d/b/a Bell
         Atlantic NYNEX Mobile, Pittsburgh SMSA, L.P. and Pennsylvania RSN No.
         6(II) and Robert A. Crown d/b/a Crown Communications dated December
         29, 1995, as amended by a letter agreement dated as of October 28,
         1997
 
 **10.20 Master Tower Lease Agreement between Cellco Partnership d/b/a Bell
         Atlantic NYNEX Mobile, Pittsburgh SMSA, L.P. and Pennsylvania RSN No.
         6(II) and Robert A. Crown d/b/a Crown Communications dated December
         29, 1995, as amended by a letter agreement dated as of October 28,
         1997
 
 **10.21 Castle Tower Holding Corp. 1995 Stock Option Plan (Third Restatement)
 
 **10.22 Services Agreement between Castle Transmission International Ltd.
         (formerly known as Castle Transmission Services Ltd.) and Castle Tower
         Holding Corp. dated February 28, 1997
 
 **10.23 Shareholders Agreement among Berkshire Fund IV Investment Corp.,
         Berkshire Investors LLC, Berkshire Partners LLC, Candover Investments
         PLC, Candover (Trustees) Limited, Candover Partners Limited (as
         general partner for four limited partnerships), Castle Tower Holding
         Corp., T 1 Diffusion de France International S.A., and Diohold Limited
         (now known as Castle Transmission Services (Holdings) Ltd.) dated
         January 23, 1997
 
 **10.24 First Amendment to Amended and Restated Stockholders Agreement by and
         among Crown Castle International Corp., Edward C. Hutcheson, Jr., Ted
         B. Miller, Jr., Robert A. Crown and Barbara Crown and the persons
         listed as Investors dated January 28, 1998
 
 **10.25 Third Amendment to Sprint Master Lease Agreement, dated February 12,
         1998
 
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
  Exhibit
    No.                           Description of Exhibit
  -------                         ----------------------
 <C>       <S>
 ****10.26 Stockholders Agreement between Crown Castle International Corp. and
           certain stockholders listed on Schedule 1 thereto, dated as of
           August 21, 1998 as amended by Amendment No. 1, dated as of the 12th
           day of November, 1998
 
  ***10.27 Agreement among Castle Transmission Services (Holdings) Ltd.,
           Digital Future Investments B.V., Berkshire Partners LLC and certain
           shareholders of Castle Transmission Services (Holdings) Ltd. for the
           sale and purchase of certain shares of Castle Transmission Services
           (Holdings) Ltd., for the amendment of the Shareholders Agreement in
           respect of Castle Transmission Services (Holdings) Ltd. and for the
           granting of certain options dated April 24, 1998
 
 ****10.28 Governance Agreement among Crown Castle International Corp.,
           TeleDiffusion de France International S.A. and Digital Future
           Investments B.V., dated as of August 21, 1998
 
 ****10.29 Form of Severance Agreement entered into between Crown Castle
           International Corp. and Ted Miller, George Reese, John Gwyn, Charles
           Green, Alan Rees, Blake Hawk and David Ivy
 
 ****10.30 Shareholders Agreement among Crown Castle International Corp., T 1
           Diffusion de France International S.A. and Castle Transmission
           Services (Holdings) Limited dated August 1998
 
  ***10.31 Site Sharing Agreement between National Transcommunications Limited
           and The British Broadcasting Corporation dated September 10, 1991
 
  ***10.32 Transmission Agreement between The British Broadcasting Corporation
           and Castle Transmission Services Limited dated February 27, 1997
 
  ***10.33 Digital Terrestrial Television Transmission Agreement between The
           British Broadcasting Corporation and Castle Transmission
           International Ltd. dated February 10, 1998
 
  ***10.34 Agreement for the Provision of Digital Terrestrial Television
           Distribution and Transmission Services between British Digital
           Broadcasting plc and Castle Transmission International Ltd. dated
           December 18, 1997
 
  ***10.35 Loan Amendment Agreement among Castle Transmission International,
           Castle Transmission Services (Holdings) Ltd. and certain lenders
           dated May 21, 1997
 
  ***10.36 Crown Castle International Corp. 1995 Stock Option Plan (Fourth
           Restatement)
 
  ***10.37 Contract between British Telecommunications PLC and Castle
           Transmission International Inc. for the Provision of Digital
           Terrestrial Television Network Distribution Service dated May 13,
           1998
 
  ***10.38 Site Marketing Agreement dated June 25, 1998 between BellSouth
           Mobility Inc. and Crown Communication Inc.
 
  ***10.39 Commitment Agreement between the British Broadcasting Corporation,
           Castle Tower Holding Corp., T 1 Diffusion de France International
           S.A. and T 1 Diffusion de France S.A.
 
 ****10.40 Amended and Restated Services Agreement between Castle Transmission
           International Limited and T 1 Diffusion de France S.A. dated August
           1998
 
  ***10.41 Castle Transmission Services (Holdings) Ltd. All Employee Share
           Option Scheme dated as of January 23, 1998
 
  ***10.42 Rules of the Castle Transmission Services (Holdings) Ltd. Bonus
           Share Plan
 
 ****10.43 Employee Benefit Trust between Castle Transmission Services
           (Holdings) Ltd. and Castle Transmission (Trustees) Limited
</TABLE>
<PAGE>
 
<TABLE>
<CAPTION>
   Exhibit
     No.                            Description of Exhibit
   -------                          ----------------------
 <C>          <S>
     ***10.44 Castle Transmission Services (Holdings) Ltd. Unapproved Share
              Option Scheme dated as of January 23, 1998
 
     ***10.45 Amending Agreement between the British Broadcasting Corporation
              and Castle Transmission International Limited dated July 16, 1998
 
    ****10.46 Rights Agreement dated as of August 21, 1998, between Crown
              Castle International Corp. and Chasemellon Shareholder Services
              L.L.C.
 
     ***10.47 Deed of Grant of Option between Castle Transmission Series
              (Holdings) Ltd. and George Reese dated January 23, 1998
 
     ***10.48 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and David Ivy dated January 23, 1998
 
     ***10.49 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and David Ivy dated April 23, 1998
 
     ***10.50 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and Ted B. Miller, Jr., dated April 23, 1998
 
     ***10.51 Deed of Grant of Option between Castle Transmission Services
              (Holdings) Ltd. and Ted B. Miller, Jr., dated January 23, 1998
 
     ***10.52 Memorandum Regarding Proposed Initial Public Offering and Certain
              Transitional Changes Affecting Management dated July 2, 1998,
              between Crown Castle International Corp. and Robert A. and
              Barbara A. Crown
 
     ***10.53 Services Agreement dated July 2, 1998, by and between Crown
              Castle International Corp. and Robert A. and Barbara A. Crown
 
    ****10.56 Registration Rights Agreement dated as of December 21, 1998 by
              and among Crown Castle International Corp. and Lehman Brothers,
              Salomon Smith Barney and Goldman, Sachs & Co.
 
   *****10.57 Formation Agreement relating to the formation of Crown Atlantic
              Company LLC, Crown Atlantic Holding Sub LLC, and Crown Atlantic
              Holding Company LLC dated December 1998
 
  ******10.58 Letter of Agreement between Crown Castle International Corp. and
              BellSouth Mobility Inc. dated March 5, 1999 (including the Form
              of Sublease)
 
 *******10.59 Asset Purchase Agreement among Crown Castle International Corp.,
              CCP Inc., Powertel Atlanta Towers, LLC, Powertel Birmingham
              Towers, LLC, Powertel Jacksonville Towers, LLC, Powertel Kentucky
              Towers, LLC, Powertel Memphis Towers, LLC and Powertel, Inc.
              dated March 15, 1999
 
    ****10.60 Framework Agreement between One2One and Castle Transmission
              International Ltd. dated March 5, 1999
 
    ****10.61 Indenture between Crown Castle International Corp. and United
              States Trust Company of New York dated March 15, 1999
 
    ****10.62 Registration Rights Agreement among Crown Castle International
              Corp. and Goldman Sachs Credit Partners LP, Salomon Brothers
              Holding Company Inc. and Credit Suisse First Boston dated March
              15, 1999
 
    ****10.63 Escrow Agreement among Crown Castle International Corp., Goldman
              Sachs Credit Partners LP, Salomon Brothers Holding Company Inc.,
              Credit Suisse First Boston and United States Trust Company of New
              York dated March 15, 1999
 
    ****10.64 Term Loan Agreement among Crown Castle International Corp. and
              Goldman Sachs Credit Partners LP, Salomon Brothers Holding
              Company Inc. and Credit Suisse First Boston dated March 15, 1999
 
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 Exhibit
   No.                      Description of Exhibit
 -------                    ----------------------
 <C>      <S>
   ****11 Computation of Net Loss per Common Share
 
   ****12 Computation of Ratio of Earnings to Fixed Charges
 
   ****21 Subsidiaries of Crown Castle International Corp.
 
     23.1 Consent of KPMG LLP
 
    *23.2 Consent of Cravath, Swaine & Moore (included in Exhibit 5)
 
 ****27.1 Financial Data Schedule
</TABLE>
- --------
      * To be filed by amendment.
     ** Incorporated by reference to the exhibits with the corresponding
        exhibit numbers in the Registration Statement on Form S-4 previously
        filed by the Registrant (Registration No. 333-43873).
    *** Incorporated by reference to the exhibits with the corresponding
        exhibit numbers in the Registration Statement on Form S-1 previously
        filed by the Registrant (Registration No. 333-57283).
   **** Incorporated by reference to the exhibits with the corresponding
        exhibit numbers in the Registration Statement on Form S-4 previously
        filed by the Registrant (Registration No. 333-71715).
  ***** Incorporated by reference to the exhibit previously filed by the
        Registrant on Form 8-K (Registration No. 0-24737) dated December 9,
        1998.
 ****** Incorporated by reference to the exhibit previously filed by the
        Registrant on Form 8-K (Registration No. 0-24737) dated March 8, 1999.
******* Incorporated by reference to the exhibit previously filed by the
        Registrant on Form 8-K (Registration No. 0-24737) dated March 15, 1999.

<PAGE>
 
                                                                    EXHIBIT 23.1
 
    The Board of Directors
    Crown Castle International Corp.:
 
    The audits referred to in our report dated February 24, 1999, related to
Crown Castle International Corp. and its subsidiaries included the related
financial statement schedule as of December 31, 1997 and 1998, and for each of
the years in the three-year period ended December 31, 1998, included in the
Registration Statement. This financial statement schedule is the responsibility
of the Company's management. Our responsibility is to express an opinion on
this financial statement schedule based on our audits. In our opinion, such
financial statement schedule, when considered in relation to the consolidated
financial statements taken as a whole, presents fairly in all material respects
the information set forth therein.
 
    We consent to the use of our reports included herein and to the reference
to our firm under the headings "Experts" in the Prospectus.
                                             
                                          /s/ KPMG LLP     
 
                                          KPMG LLP
 
Houston, Texas
   
April 13, 1999     


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