INDEPENDENT ENERGY HOLDINGS PLC
F-1/A, 1998-07-22
ELECTRIC SERVICES
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<PAGE>
 
     
  AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 22, 1998     
                                           REGISTRATION STATEMENT NO. 333-56223
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
 
                               ----------------
                                
                             AMENDMENT NO. 2     
                                      TO
                                   FORM F-1
                         REGISTRATION STATEMENT UNDER
                          THE SECURITIES ACT OF 1933
 
                               ----------------
 
                        INDEPENDENT ENERGY HOLDINGS PLC
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN THE CHARTER)
 
                               ----------------
 
    ENGLAND AND WALES                4911                  NOT APPLICABLE
     (STATE OR OTHER     (PRIMARY STANDARD INDUSTRIAL     (I.R.S. EMPLOYER
     JURISDICTION OF      CLASSIFICATION CODE NUMBER)  IDENTIFICATION NUMBER)
     CORPORATION OR
      ORGANIZATION)
 
                               ----------------
 
                                DOMINION COURT
                                43 STATION ROAD
                            SOLIHULL, WEST MIDLANDS
                            UNITED KINGDOM B91 3RT
                              011-44-121-705-1111
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                               ----------------
 
                             CT CORPORATION SYSTEM
                                 1633 BROADWAY
                              NEW YORK, NY 10019
                                (212) 664-1666
(NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
 
                               ----------------
 
                         COPIES OF COMMUNICATIONS TO:
          RICHARD J. WILKIE                           KEITH KEARNEY
 AKIN, GUMP, STRAUSS, HAUER & FELD,               DAVIS POLK & WARDWELL
               L.L.P.                             450 LEXINGTON AVENUE
      711 LOUISIANA, SUITE 1900                 NEW YORK, NEW YORK 10017
        HOUSTON, TEXAS 77002                         (212) 450-4000
           (713) 220-5800
 
  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, please 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 delivery of the prospectus is expected to 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 THIS REGISTRATION
STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A         +
+REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE   +
+SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY  +
+OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT        +
+BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR   +
+THE SOLICITATION OF ANY OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE     +
+SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE    +
+UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF  +
+ANY SUCH STATE.                                                               +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                   
PROSPECTUS      SUBJECT TO COMPLETION, DATED JULY 22, 1998     
    , 1998
 
[LOGO OF INDEPENDENT ENERGY HOLDINGS PLC APPEARS HERE]

                      8,000,000 AMERICAN DEPOSITARY SHARES
                     REPRESENTING 8,000,000 ORDINARY SHARES
 
  Each of the American Depositary Shares ("ADSs") offered hereby represents one
ordinary share, nominal value 1p per share (each, a "Share" or "Ordinary
Share"), of Independent Energy Holdings plc, a public limited company organized
under the laws of England and Wales ("Independent Energy" or the "Company").
The ADSs will be evidenced by American Depositary Receipts ("ADRs"). See
"Description of American Depositary Receipts." All of the Shares represented by
ADSs offered hereby are being sold by the Company.
 
  Prior to this offering, there has been no public trading market in the United
States for the Shares or the ADSs. It is currently estimated that the offering
price will be between $7.75 and $8.75 per ADS. Application has been made to
list the ADSs on The Nasdaq Stock Market's National Market ("Nasdaq") under the
symbol "INDYY."
 
  SEE "RISK FACTORS" BEGINNING ON PAGE 11 FOR CERTAIN INFORMATION THAT SHOULD
BE CONSIDERED BY PROSPECTIVE INVESTORS.
 
THESE SECURITIES  HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE  SECURITIES AND
 EXCHANGE  COMMISSION  OR  ANY  STATE   SECURITIES  COMMISSION,  NOR  HAS  THE
 SECURITIES AND EXCHANGE COMMISSION OR  ANY STATE SECURITIES COMMISSION PASSED
  UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
  CONTRARY IS A CRIMINAL OFFENSE.
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                     UNDERWRITING
                                           PRICE     DISCOUNTS AND  PROCEEDS TO
                                          TO THE      COMMISSIONS   INDEPENDENT
                                          PUBLIC          (1)        ENERGY(2)
- -------------------------------------------------------------------------------
<S>                                    <C>           <C>           <C>
Per ADS...............................   $             $             $
Total (3)............................. $             $             $
- -------------------------------------------------------------------------------
</TABLE>
(1)  Independent Energy has agreed to indemnify the Underwriters against
     certain liabilities, including liabilities under the Securities Act of
     1933, as amended. See "Underwriting."
(2)  Before deducting expenses payable by Independent Energy, estimated at
     $   .
(3)  Independent Energy has granted to the Underwriters an option, exercisable
     at the direction of the Representatives of the Underwriters within 30 days
     after the date hereof, to purchase up to 1,200,000 additional ADSs on the
     same terms and conditions set forth above solely to cover over-allotments,
     if any. If such option is exercised in full, the total Price to the
     Public, Underwriting Discounts and Commissions and Proceeds to Independent
     Energy will be $   , $     and $    , respectively. See "Underwriting."
 
  The ADSs are being offered hereby by the several Underwriters, when, as and
if delivered to and accepted by the Underwriters and subject to various prior
conditions, including their right to reject orders in whole or in part. It is
expected that delivery of ADRs evidencing the ADSs will be made in New York,
New York against payment therefor on or about     , 1998.
 
DONALDSON, LUFKIN & JENRETTE
     SECURITIES CORPORATION
 
                   JOHNSON RICE & COMPANY L.L.C.
 
                                                       SOUTHCOAST CAPITAL L.L.C.
<PAGE>
 
                              THE POWER TO CHOOSE
 
 
 
 
 
 
 
[MONTAGE OF PHOTOGRAPHS INCLUDING A CONTROL PANEL OPERATING GAS PRODUCTION
EQUIPMENT, GAS WELLHEADS, ELECTRICITY GENERATORS, CONTROL EQUIPMENT USED TO
OPERATE GENERATORS AND ELECTRICITY CONSUMERS.]

                             [LOGO APPEARS HERE] 

  CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE ADSS OR THE
ORDINARY SHARES. SPECIFICALLY, THE UNDERWRITERS MAY OVERALLOT IN CONNECTION
WITH THE OFFERING AND MAY BID FOR AND PURCHASE ADSS OR ORDINARY SHARES IN THE
OPEN MARKET. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE "UNDERWRITING."
 
                                       2
<PAGE>
 
  NO PERSON IS AUTHORIZED IN CONNECTION WITH ANY OFFERING MADE HEREBY TO GIVE
ANY INFORMATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED IN THIS
PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY. NEITHER THE DELIVERY
OF THIS PROSPECTUS, NOR ANY SALE MADE HEREUNDER SHALL UNDER ANY CIRCUMSTANCES
CREATE ANY IMPLICATION THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF
ANY DATE SUBSEQUENT TO THE DATE HEREOF.
 
  THE SECURITIES HEREBY OFFERED MAY NOT BE OFFERED TO PERSONS IN THE UNITED
KINGDOM EXCEPT TO PERSONS WHOSE ORDINARY ACTIVITIES INVOLVE THEM IN ACQUIRING,
HOLDING, MANAGING OR DISPOSING OF INVESTMENTS (AS PRINCIPAL OR AGENT) FOR THE
PURPOSES OF THEIR BUSINESSES, OR OTHERWISE IN CIRCUMSTANCES WHICH DO NOT
CONSTITUTE AN OFFER TO THE PUBLIC IN THE UNITED KINGDOM WITHIN THE MEANING OF
THE PUBLIC OFFERS OF SECURITIES REGULATIONS 1995.
 
  THIS DOCUMENT HAS NOT BEEN APPROVED BY AN AUTHORIZED PERSON FOR THE PURPOSES
OF SECTION 57 OF THE FINANCIAL SERVICES ACT 1986. ACCORDINGLY, THIS DOCUMENT
MAY NOT BE ISSUED TO ANY PERSON IN THE UNITED KINGDOM UNLESS THAT PERSON IS OF
THE KIND DESCRIBED IN ARTICLE 11(3) OF THE FINANCIAL SERVICES ACT 1986
(INVESTMENT ADVERTISEMENTS) (EXEMPTION) ORDER 1996 OR ARTICLE 8(1) OF THE
FINANCIAL SERVICES ACT 1986 (INVESTMENT ADVERTISEMENTS) (EXEMPTION) (NO.2)
ORDER 1995 OR IS A PERSON TO WHOM THIS DOCUMENT MAY OTHERWISE BE ISSUED
LAWFULLY.
 
               SERVICE OF PROCESS AND ENFORCEMENT OF LIABILITIES
 
  Independent Energy is registered and exists under the laws of England and
Wales. All but two of the directors and officers of Independent Energy and
certain of the experts named herein are residents of the United Kingdom
("U.K.") or otherwise reside outside the United States ("U.S."), and all or a
substantial portion of their assets and all or substantially all of the assets
of the Company are located outside the U.S. Independent Energy has appointed
an agent for service of process in the U.S., as described below, but it may be
difficult for investors to effect service within the U.S. upon those
directors, officers and experts who are not residents of the U.S., or to
enforce against them judgments of U.S. courts predicated upon the civil
liability of Independent Energy and such directors, officers and experts under
the U.S. federal securities laws. Independent Energy has been advised by its
English solicitors, Masons, that there is doubt as to the enforceability in
England whether by means of original actions or actions for the enforcement of
judgments of U.S. courts of the civil liabilities predicated upon the U.S.
federal securities laws.
 
  Independent Energy has appointed CT Corporation System, 1633 Broadway, New
York, New York 10019, as its agent for service of process in the U.S. in
respect of any investigation or administrative proceeding conducted by the
Commission and any civil suit or action brought against or involving
Independent Energy in a U.S. court arising out of or related to or concerning
the offering of ADSs or Shares under this Prospectus.
 
                                       3
<PAGE>
 
                             AVAILABLE INFORMATION
 
  Independent Energy has filed with the Securities and Exchange Commission
(the "Commission") a Registration Statement on Form F-1 and a Registration
Statement on Form F-6 (together with all amendments and exhibits thereto,
herein collectively referred to as the "Registration Statements" or,
individually, as a "Registration Statement") pursuant to the United States
Securities Act of 1933, as amended (the "Securities Act"), with respect to the
ADSs offered hereby. This Prospectus, which constitutes a part of the
Registration Statement on Form F-1, does not contain all of the information
set forth in the Registration Statements, certain items of which are contained
in exhibits and schedules to the Registration Statements as permitted by the
rules and regulations of the Commission. For further information with respect
to Independent Energy and the Ordinary Shares represented by ADSs, reference
is made to the Registration Statements, including the exhibits thereto, and
financial statements and notes filed as a part thereof. Statements made in
this Prospectus concerning the contents of any document referred to herein are
not necessarily complete. With respect to each such document filed with the
Commission as an exhibit to the Registration Statements, reference is made to
the exhibit for a more complete description of the matter involved, and each
such statement shall be deemed in its entirety by such reference. The
Registration Statements (including the exhibits and schedules thereto) filed
with the Commission by Independent Energy may be inspected and copied at the
public reference facilities maintained by the Commission at 450 Fifth Street,
N.W., Washington, D.C. 20549, and at the following regional offices of the
Commission: New York Regional Office, Seven World Trade Center, 13th Floor,
New York, New York 10048; and Chicago Regional Office, Suite 1400, 500 West
Madison Street, Chicago, Illinois 60661. Copies of such material may be
obtained at prescribed rates from the Public Reference Section of the
Commission, 450 Fifth Street, N.W., Washington, D.C. 20549.
 
  Independent Energy recently became subject to the informational requirements
of the Securities Exchange Act of 1934, as amended (the "Exchange Act").
Independent Energy intends to fulfill its obligations with respect to such
requirements by filing periodic reports and other information with the
Commission. As a foreign private issuer, Independent Energy is exempt from
certain provisions of the Exchange Act, prescribing the furnishing and content
of proxy statements and certain periodic reports and from provisions of the
Exchange Act relating to short-swing profits reporting and liability.
 
  Independent Energy will furnish The Bank of New York, a New York banking
corporation which has its principal office located in New York, New York, as
Depositary (the "Depositary"), for the ADRs, with annual reports containing a
review of operations, annual audited consolidated financial statements
prepared under accounting policies conforming with generally accepted
accounting principles in the United Kingdom ("U.K. GAAP") and an opinion
thereon by the independent chartered accountants to the Company. The annual
reports will include a reconciliation of net income (loss) and shareholders'
equity to amounts estimated to be in accordance with generally accepted
accounting principles in the United States ("U.S. GAAP") and the amounts of
earnings per Ordinary Share computed under U.S. GAAP. Independent Energy will
also furnish the Depositary with quarterly reports for the first three
quarters of each fiscal year which will include unaudited interim condensed
consolidated financial information prepared in accordance with U.K. GAAP. The
Depositary will arrange for the mailing of such reports to all record holders
of ADSs. Independent Energy will also furnish to the Depositary copies of all
notices of shareholders' meetings and other reports and communications that
are distributed generally to its shareholders. The Depositary will arrange for
the mailing of such notices, reports and communications to all record holders
of ADSs. See "Description of American Depositary Receipts."
 
                                       4
<PAGE>
 
                 PRESENTATION OF CERTAIN FINANCIAL INFORMATION
 
  The audited consolidated financial statements of the Company as of and for
the years ended December 31, 1994 and 1995, the six months ended June 30,
1996, the fiscal year ended June 30, 1997 and the nine months ended March 31,
1998 contained elsewhere in this Prospectus are presented in conformity with
generally accepted accounting principles in the United Kingdom ("U.K. GAAP")
together with a reconciliation of net income (loss) and shareholders' equity
to generally accepted accounting principles in the United States ("U.S.
GAAP"). In 1996, the Company changed its fiscal year end from December 31 to
June 30. Accordingly, the Prospectus includes audited financial statements as
of and for the six months ended June 30, 1996.
 
  The Company publishes its financial statements in pounds sterling ("pounds"
or "(Pounds)"). One pound consists of one hundred pence (100p). In this
Prospectus, currency amounts are expressed in pounds or in United States
dollars ("dollars" or "$"). For the convenience of the reader, this Prospectus
presents certain translations into dollars of certain pound amounts. These
translations should not be construed as representations that the pound amounts
actually represent such dollar amounts or could be converted into dollars at
the rates indicated or at any other rate. Unless otherwise specified herein,
such translations have been made at the rate of $1.68 per (Pounds)1, the noon
buying rate in New York City for cable transfers in pounds as certified for
customs purposes by the Federal Reserve Bank of New York (the "Noon Buying
Rate") on March 31, 1998. The Noon Buying Rate on June 22, 1998 was $1.67 per
(Pounds)1. See "Exchange Rates."
 
                                       5
<PAGE>
 
                               PROSPECTUS SUMMARY
 
  The following summary is qualified in its entirety by the more detailed
information, and the Company's consolidated financial statements and notes
thereto, appearing elsewhere in this Prospectus. Independent Energy Holdings
plc is a holding company and conducts its operations through its sole wholly
owned operating subsidiary, Independent Energy UK Limited ("IEUKL"). As used
herein, references to the "Company" or "Independent Energy" refer to
Independent Energy Holdings plc, IEUKL and their predecessors. Unless otherwise
specified, the information in this Prospectus assumes no exercise of the
Underwriters' over-allotment option. For a description of certain terms
contained herein, see "Glossary" included elsewhere in this Prospectus.
 
                                  THE COMPANY
 
  Independent Energy is the largest independent marketer of electricity in the
United Kingdom (i.e., not a part of the government-owned electricity industry
at the time of its privatization in 1990). The Company was founded to
capitalize on the market opportunities created by the deregulation of the
United Kingdom electricity market and has assembled a core management team with
extensive industry experience from a number of leading U.K. energy firms,
including Scottish Power plc, National Power plc, Scottish Hydro-Electric plc
and Midlands Electricity plc. Since commencing electricity sales in April 1996,
management believes that it has established Independent Energy as a reliable
alternative provider of electricity. The Company currently has over 1,400
customers, primarily in the light industrial, commercial and public sector
markets. The Company increased its revenue from (Pounds)11.1 million ($18.6
million) for the fiscal year ended June 30, 1997 to (Pounds)34.9 million ($58.6
million) for the nine months ended March 31, 1998. The Company's revenue for
the two months ended May 31, 1998 was (Pounds)14.8 million ($24.9 million).
 
  Deregulation of the U.K. electricity industry commenced in April 1990 and has
encompassed each of the supply (marketing), transportation and generation
segments of the industry. The supply segment is being deregulated in three
phases. The first two phases have been completed and enabled consumers with 100
kW or greater peak demand to choose their electricity supplier. The final phase
will enable all remaining consumers to choose their supplier and is scheduled
to begin in September 1998 and be completed in June 1999. With respect to the
deregulation of the generation segment, anyone who obtains the requisite
permits and licenses may install and operate generation facilities. A spot
market, called the Electricity Pool of England and Wales (the "Pool"), was
established for the bulk trading of electricity in England and Wales between
generators and suppliers. All generating plants with a capacity of 100 MW or
greater are required to sell their output to the Pool. Plants with less than
100 MW capacity may sell their output to consumers, suppliers or the Pool,
which is required to purchase the output at the prevailing spot market price.
The deregulation of the transportation segment enabled suppliers to transport
electricity at regulated rates without discrimination over bulk transmission
lines operated by the National Grid Company plc ("NGC") and distribution lines
operated by the twelve regional electricity companies ("RECs").
 
  The first two phases of deregulation of the supply segment of the U.K.
electricity industry enabled approximately 60,000 commercial and industrial
customers with aggregate annual electricity expenditures of approximately
(Pounds)7.0 billion to select their supplier. The Company specifically targets
consumers on the lower end of the (greater than) 100 kW consumer range, a market
segment which the Company estimates to include approximately 30,000 consumers
with aggregate annual electricity expenditures of approximately (Pounds)2.3
billion. The completion of the final phase of deregulation will substantially
increase the size of the market available to the Company as an additional 1.9
million commercial consumers and 24.0 million domestic (residential) consumers
with aggregate annual electricity expenditures of approximately (Pounds)11.0
billion will be able to choose their electricity supplier. Within this market,
the Company intends to selectively target approximately 200,000 commercial
 
                                       6
<PAGE>
 
consumers with peak demand usage of 20 kW to 100 kW and approximately 16.7
million domestic and commercial consumers with peak demand usage of less than
20 kW. The Company estimates that these markets have aggregate annual
electricity expenditures of approximately (Pounds)7.4 billion.
 
BUSINESS STRATEGY
 
  The Company's objectives are to expand its revenue base and to increase its
operating margins. The Company is pursuing these objectives through a business
strategy comprised of the following elements:
 
  Expand Customer Base. The Company intends to continue to expand its customer
base through increased penetration of the currently deregulated (greater than)
100 kW market and to enter into the (less than) 100 kW market upon the final
phase of deregulation expected to begin in September 1998. The Company believes
it can effectively compete in all of its targeted market segments on the basis
of price and quality of service. Within the commercial segment of the (less
than) 100 kW consumer market, the Company believes it can leverage its
relationships with its existing customer base to obtain a number of the smaller
sites operated by its existing customers in the (greater than) 100 kW consumer
market. The Company intends to penetrate the domestic (residential) segment of
the (less than) 100 kW consumer market by, among other things, capitalizing on
the relationships and marketing channels of selected strategic marketing
partners to offer electricity services as a jointly packaged range of products
to an already well-established customer base. The Company also intends to
significantly increase its number of commissioned sales agents and to enhance
its direct mail and telemarketing capabilities to further achieve its customer
expansion goals. As a result of its marketing efforts to date, the Company has
signed contracts for an additional 3,000 customers in the (less than) 100 kW
consumer market which will become effective pending deregulation.
 
  Install Additional Generating Capacity. By generating a portion of the
electricity that it supplies, the Company believes it can reduce its exposure
to fluctuating Pool prices and lower its cost of sales. The Company currently
operates three generating plants with a capacity of 18 MW and expects to have a
total of six generating plants with an aggregate capacity of 44 MW operational
by the end of 1998. The Company's objective is to install additional generating
facilities to provide it with approximately 10 MW to 20 MW of aggregate
capacity in each of the twelve local distribution areas in England and Wales.
Management views the operation of its own generating plants as an important
part of its overall risk management strategy. Moreover, by owning generating
plants with less than 100 MW capacities and selling the output directly to
consumers within the local distribution system, the Company obtains certain
cost advantages, including avoidance of Pool expenses, NGC transportation
tariffs and transmission power losses.
 
  Leverage Management Expertise. Mr. Burt H. Keenan, the founder and Executive
Chairman of the Company, has built a management team with extensive experience
in the U.K. electricity and energy industry. Prior to joining the Company, Mr.
John L. Sulley, Managing Director of the Company, held senior management
positions with National Power plc ("National Power") where he established its
electricity marketing operations and managed the installation of small
generating plants at customer sites, and with Scottish Power plc ("Scottish
Power") where he was responsible for the financial, strategic and business
planning for supply and electricity trading operations. In addition, other
members of management have held senior positions with Scottish Power, National
Power, Scottish Hydro-Electric plc ("Scottish Hydro") and Midlands Electricity
plc ("Midlands Electricity").
 
  Maintain Prudent Risk Management Practices. The Company generally enters into
fixed price sales contracts with customers for a stated period, typically one
or two years. Most of the Company's supply of electricity is purchased from the
Pool at fluctuating spot market prices. In addition to generating a portion of
the electricity it sells, the Company has sought to reduce the risks associated
with fluctuating Pool prices by selectively targeting customers with relatively
predictable usage profiles and by entering into hedging instruments known as
contracts for differences ("CFDs"). Management intends to enter into CFDs to
cover a significant portion of the customer contracts it enters into in the
future. By utilizing such risk management practices, management believes it can
balance its objective of profit maximization with acceptable levels of risk.
 
                                       7
<PAGE>
 
 
  Expand Product Offerings. The Company believes that significant opportunities
exist to cost-effectively market additional energy products and services to its
electricity customer base. In particular, the U.K. natural gas industry has
been deregulated in a manner similar to that of the electricity industry. The
Company is currently exploring ways to market natural gas to its customer base
through strategic acquisitions, joint ventures and other marketing
affiliations.
 
                                       8
<PAGE>
 
                                  THE OFFERING
 
ADSS OFFERED................  8,000,000(1)
 
ORDINARY SHARES TO BE
 OUTSTANDING AFTER THE
 OFFERING...................  25,935,527(1)(2)
 
VOTING RIGHTS...............  The holders of ADRs, acting through the
                              Depositary, are entitled to the same voting
                              rights as holders of Ordinary Shares. See
                              "Description of American Depositary Receipts--
                              Voting of Deposited Securities."
 
USE OF PROCEEDS.............  The Company intends to use the net proceeds from
                              the offering as follows: (i) approximately $28.0
                              million to fund the equity-financed portion of
                              the acquisition and installation of gas-fired
                              generating plants by the Company over the next 18
                              months and to fund the acquisition of additional
                              information technology and related equipment to
                              service the Company's expanding customer base;
                              (ii) approximately $13.3 million to repay certain
                              outstanding indebtedness; and (iii) the remainder
                              for working capital and general corporate
                              purposes, including increased working capital
                              requirements associated with the projected
                              expansion of the Company's operations and
                              possible strategic acquisitions. See "Use of
                              Proceeds."
 
LISTING OF ADSS.............  Application has been made to list the ADSs
                              offered hereby on Nasdaq.
 
PROPOSED NASDAQ NATIONAL
 MARKET SYMBOL..............  INDYY
 
CONDITION TO CLOSING........  The offering is contingent upon approval by the
                              shareholders of the Company of (i) an increase in
                              the Company's authorized capital and (ii) the
                              disapplication of certain preemptive rights. See
                              "Description of Share Capital."
- ------------------------
(1) Assumes no exercise of the Underwriters' over-allotment option.
(2) Excludes 3,530,900 Shares issuable pursuant to the exercise of options and
    warrants outstanding on May 31, 1998. See "Management."
 
                                       9
<PAGE>
 
               SUMMARY CONSOLIDATED FINANCIAL AND OPERATING DATA
 
  The summary historical consolidated financial data for the fiscal year ended
June 30, 1997 and as of and for the nine months ended March 31, 1998 are
derived from the Company's audited consolidated financial statements included
elsewhere in this Prospectus. The summary consolidated financial data for the
nine months ended March 31, 1997 have been derived from the unaudited
consolidated financial statements of the Company included elsewhere herein and,
in the opinion of the Company, have been prepared on a basis substantially
consistent with that of the audited periods. In the opinion of the Company, the
unaudited interim financial statements reflect all adjustments necessary to
present fairly such information for the nine month period ended March 31, 1997.
The summary consolidated balance sheet data at March 31, 1998 have been
adjusted to give effect to the Offering and the application of the estimated
net proceeds therefrom.
 
  The Company's historical consolidated financial statements have been prepared
in accordance with U.K. GAAP which differ in certain significant respects from
U.S. GAAP. Notes 29 and 30 to the Company's consolidated financial statements
describe the principal differences between U.K. GAAP and U.S. GAAP as they
relate to the Company and provide a reconciliation to U.S. GAAP of net income
(loss) and total shareholders' equity. The summary financial data should be
read in conjunction with "Selected Consolidated Financial Data," "Management's
Discussion and Analysis of Financial Condition and Results of Operations" and
the Company's consolidated financial statements and the notes thereto appearing
elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                         NINE MONTHS ENDED MARCH 31,
                          FISCAL YEAR ENDED    ----------------------------------------------------
                            JUNE 30, 1997            1997                 1998            1998(1)
                                                  (UNAUDITED)
<S>                       <C>                  <C>                 <C>                  <C>
STATEMENT OF OPERATIONS
 DATA:
U.K. GAAP
Revenue.................  (Pounds)11,127,164   (Pounds)5,490,338   (Pounds)34,921,839   $58,668,690
Cost of sales...........          10,872,238           5,360,559           33,634,538    56,506,024
Administrative expenses.           1,363,343           1,036,849            1,337,395     2,246,824
Depreciation and amorti-
 zation.................             141,850              97,299              301,608       506,701
Operating loss..........          (1,250,267)         (1,004,369)            (351,702)     (590,859)
Interest income (ex-
 penses), net...........              68,674              44,809              (74,403)     (124,997)
Net loss................          (1,181,593)           (959,560)            (426,105)     (715,856)
Loss per share..........                (9.0)p              (7.3)p               (2.5)p $     (0.04)
Weighted average shares
 outstanding............          13,129,914          13,124,800           16,967,802    16,967,802
U.S. GAAP
Revenue.................  (Pounds)11,127,164   (Pounds)5,490,338   (Pounds)34,921,839   $58,668,690
Net loss................          (1,369,688)         (1,100,630)            (521,709)     (876,471)
Loss per share..........               (10.4)p              (8.4)p               (3.1)p $     (0.05)
Weighted average shares
 outstanding............          13,129,914          13,124,800           16,967,802    16,967,802
OPERATING DATA:
Electricity sales (GWh).                 256                 131                  842           842
Customers (at end of pe-
 riod) (2)..............                 324                 135                1,225         1,225
</TABLE>
 
<TABLE>
<CAPTION>
                                                MARCH 31, 1998
                                  ---------------------------------------------
                                                                         AS
                                        ACTUAL          ACTUAL(1)   ADJUSTED(1)
<S>                               <C>                 <C>           <C>
BALANCE SHEET DATA:
U.K. GAAP
Working capital.................. (Pounds)  (632,586) $ (1,062,744) $45,847,256
Total assets.....................         31,145,922    52,325,149   99,235,149
Long-term liabilities............         11,155,703    18,741,581   16,389,581
Shareholders' equity.............          9,128,506    15,335,890   75,545,891
U.S. GAAP
Working capital.................. (Pounds)  (632,586) $ (1,062,744) $45,847,256
Total assets.....................         31,536,121    52,980,683   99,890,683
Long-term liabilities............         11,940,316    20,059,731   17,707,731
Shareholders' equity.............          8,734,092    14,673,275   74,883,275
</TABLE>
- ------------------------
(1) Translations into dollars in this table are solely for convenience and are
    computed at the Noon Buying Rate on March 31, 1998 of $1.68 per (Pounds)1.
(2) Customers include end-users whose usage is recorded by one meter.
 
                                       10
<PAGE>
 
                                 RISK FACTORS
 
  Prospective purchasers of the ADSs should carefully read this entire
Prospectus and, in particular, the information set forth below. This
Prospectus includes forward-looking statements within the meaning of Section
27A of the Securities Act and Section 21E of the Exchange Act. All statements
regarding the Company's expected future financial position, results of
operations, cash flows, financing plans, business strategy, budgets, projected
costs and capital expenditures, competitive positions, growth opportunities,
plans and objectives of management for future operations and words such as
"anticipate," "believe," "plan," "estimate," "expect," "intend" and other
similar expressions are forward-looking statements. Such forward-looking
statements are inherently uncertain, and prospective purchasers of ADSs must
recognize that actual results may differ from the Company's expectations.
 
  Actual future results and trends for the Company may differ materially
depending on a variety of factors discussed in this "Risk Factors" section and
elsewhere in this Prospectus. Factors that may affect the plans or results of
the Company include, without limitation, (i) success in implementing the
Company's business strategies, including the continued expansion of the
Company's operations following the final phase of deregulation expected to
commence in September 1998, (ii) the cost of electricity purchases, (iii) the
nature and extent of future competition and (iv) the changes in the general
economic condition in the U.K. and/or in the markets in which the Company
competes. Many of such factors are beyond the control of the Company and its
management.
 
LIMITED HISTORY OF BUSINESS OPERATIONS
 
  The Company has a limited operating history in the electricity supply
industry, having only commenced sales of electricity in April 1996. Moreover,
direct sales of electricity have to date not been implemented by an
independent operator (i.e., an entity that was not part of the U.K.
electricity industry at the time of its privatization in 1990) on a scale
envisioned by the Company. Although initial consumer acceptance of the
Company's services has been encouraging, the Company is unable to predict with
certainty how consumer demand for these services may develop over time. The
Company's future profitability depends in large measure on consumer acceptance
of the Company as an attractive alternative to its competitors as a supplier
of electricity. In addition, there can be no assurance that the Company will
be able to supply electricity at a reasonable cost, that the Company will be
able to price its services competitively or, if priced competitively, that the
Company will be able to achieve margins sufficient to allow it to achieve
profitability. See "--Historical Operating Losses."
 
HISTORICAL OPERATING LOSSES
 
  The Company has incurred operating and net losses of approximately
(Pounds)2.1 million and (Pounds)2.5 million, respectively, in the aggregate
through March 31, 1998 since commencing electricity supply operations.
Accordingly, there can be no assurance that the Company's operations will
become profitable. Failure to become profitable or generate sufficient
positive operating cash flows would impact the Company's ability to sustain
operations and obtain required additional capital. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations--
Liquidity and Capital Resources." The Company is in a stage in its business
development in which certain categories of expenses may increase at rates
comparable to or greater than the rate of increase of the Company's revenues,
principally as a result of the implementation of the Company's plans to expand
its operations and serve a greater number of customers. The Company's ability
to achieve profitability will depend in large measure on its ability to
attract a sufficient number of customers to cover higher operating expenses
associated with increased marketing activities.
 
GOVERNMENT REGULATION; RISK OF POSTPONEMENT OF FINAL PHASE OF DEREGULATION
 
  The Company's activities are subject to extensive laws and regulations
regarding generating and marketing of electricity primarily by the U.K. Office
of Electricity Regulation. These laws and regulations and their interpretation
and enforcement are subject to change. The final phase of deregulation of the
supply segment of
 
                                      11
<PAGE>
 
the industry is currently scheduled to begin in September 1998; however, the
final phase was initially scheduled to occur in April 1998 and was
subsequently postponed. Accordingly, there can be no assurance that the timing
of the final phase of deregulation will not be further postponed. If
deregulation is further postponed, the Company's operations and financial
condition could be materially adversely affected.
 
  In addition, there currently is a moratorium in the U.K. on the construction
of gas-fired generating plants with capacities exceeding 50 MW. Although the
Company does not intend to build any generating plants exceeding such
capacity, there can be no assurance that additional or more stringent
requirements will not be imposed on the Company's operations in the future.
Failure to comply with such laws and regulations could result in fines against
the Company, or loss of required permits. Any such event could have a material
adverse effect on the Company. See "The Structure of the United Kingdom
Electricity Industry."
 
RISK OF INABILITY TO SUCCESSFULLY MANAGE GROWTH
 
  Since the commencement of electricity sales in April 1996, the Company has
experienced rapid revenue growth and expects to continue to experience rapid
growth and development in a relatively short period of time, due primarily to
the final phase of deregulation of the U.K. electricity market scheduled to
begin in September 1998. The development of the Company's operations will
depend on, among other things, the Company's ability to expand its customer
base in a timely manner at reasonable costs. In addition, the anticipated
growth of the Company's staff may require continued development of the
Company's operating and financial controls and may place additional stress on
the Company's management and operational resources. If the Company is unable
to manage its expected rapid growth and development successfully, the
Company's operating results and financial condition could be materially
adversely affected. In order to handle the Company's expected growth in
customers, the Company intends to outsource a number of important functions,
including billing processing and certain sales functions. There can be no
assurance that the Company will be able to obtain such services from outside
sources in the future on acceptable terms or, if so, that the Company will be
able to control the quality and cost-efficiency of any such third-party
services.
 
RISK OF ELECTRICITY PRICE FLUCTUATIONS; RISK RELATED TO GROSS PROFIT
RECOGNITION POLICY
 
  The Company's business generally involves entering into fixed price
contracts to supply electricity to its customers. The Company obtains the
electricity to satisfy its obligations under such contracts primarily by
purchases from the U.K. spot market known as the Pool. See "Business and
Properties." Because the price of electricity purchased from the Pool can be
volatile, to the extent that the Company purchases electricity from the Pool,
the Company is exposed to risk arising from differences between the fixed
price at which it sells electricity to customers and the fluctuating prices at
which it purchases electricity, unless it can effectively hedge such exposure.
The Company's ability to manage such risk at acceptable levels will depend, in
part, on generating a portion of the electricity it markets at favorable
costs, its ability to implement and manage an appropriate hedging strategy and
the development of an adequate market for hedging instruments. There can be no
assurance that this risk will be effectively mitigated and that the Company
will not incur losses from such market risk.
 
  Because the Company's sales have been growing rapidly, a portion of the
Company's sales contracts at any one time are not protected by such hedging
contracts. If the price of Pool electricity rises significantly, the Company
could sustain significant losses and its financial condition could be
materially adversely affected. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations--Risk Management Activities."
 
  Revenue from the sale of electricity is recognized by the Company on a
monthly basis based on the volume of electricity consumed by its customers and
the contract prices associated with such volume. Customers are billed monthly,
generally at a fixed price for usage. Because the cost of electricity
purchased from the Pool fluctuates throughout the term of sales contracts, the
Company recognizes gross profit related to electricity sales
 
                                      12
<PAGE>
 
on a pro rata basis throughout the term of sales contracts based on
management's estimate of gross profit margin for all sales contracts. The
difference between the cash cost of the electricity and the estimated cost of
sales based on the estimated gross profit margin is accounted for as either an
accrual for, or a deferral of, the cost of electricity and recorded on the
balance sheet within current assets or current liabilities, as the case may
be. The Company reviews its estimate of gross profit on a quarterly basis.
Accordingly, to the extent the Company has not effectively hedged its
electricity purchases from the Pool, such reviews could result in the
incurrence of an operating loss which could have a material adverse effect on
the Company's results of operations or financial condition.
 
ADDITIONAL FINANCING REQUIREMENTS OF THE COMPANY
 
  The Company's operations have been financed to date through sales of its
equity securities, capital lease financings and bank financing. The Company
will require significant additional capital to expand its marketing
organization, increase its marketing efforts and install additional
electricity generating plants. The Company believes that proceeds from this
offering, existing bank facilities and cash generated from operations should
be sufficient to fund its operations in the near term. See "Management's
Discussion and Analysis of Financial Condition and Results of Operation--
Liquidity and Capital Resources." However, no assurance can be given that
additional funds will not be required or that any funds which may be required
will be available, if at all, on acceptable terms. If additional funds are
required, the inability of the Company to raise such funds will have an
adverse effect on its operations. If capital for planned expansion is not
available, the Company will have to reduce or eliminate its planned expansion.
Even if such additional financing is available on satisfactory terms, it could
result in significant additional dilution of the equity ownership of the
Company to existing shareholders and the book value of their outstanding
Shares.
 
COMPETITION
 
  The competitive electricity supply market currently predominantly consists
of twelve RECs, two Scottish integrated electricity companies and three
generating companies. All of these competitors have more experience, greater
financial and management resources and better name recognition than the
Company. Management is unaware of any other entity (other than sales agents
and self suppliers) which is both generating and supplying to end users as an
independent (that is, not part of the electricity supply industry at
privatization) in the market. The number of suppliers in the market in which
the Company competes and plans to compete is expected to increase pending the
final phase of deregulation expected to commence in September 1998. The
Company cannot predict the extent to which new participants will enter the
markets in which it competes. The Company's business, financial condition and
results of operations could be materially and adversely affected if additional
competitors with greater resources than the Company were to enter the
industry. See "Business and Properties--Competition."
 
DEPENDENCE ON KEY PERSONNEL
 
  The continued success of the Company is highly dependent on the personal
efforts and abilities of its executive officers. The Company has entered into
employment agreements with each of its executive officers and has key man life
insurance in place for Messrs. Keenan, Sulley and Jones. If any of its
executive officers become unable to continue in or devote adequate time to
their present roles, or the Company is unable to attract and retain other
skilled management personnel, the Company's operations and financial condition
could be adversely affected. See "Management."
 
ENVIRONMENTAL REGULATION
 
  The Company's operations are subject to regulatory requirements relating to
environmental matters and health and safety. Environmental and health and
safety legislation and policy in the U.K. are evolving in a manner which has
resulted in stricter standards and enforcement, and in more stringent fines
and penalties for non-compliance. Compliance with such regulatory requirements
relating to existing and proposed projects carries a heightened degree of
responsibility for companies and their directors, officers and employees. The
cost of
 
                                      13
<PAGE>
 
compliance associated with changes in environmental and health and safety laws
and regulations could require significant expenditures, and breaches of such
laws and regulations may result in the imposition of fines and penalties, any
of which may be material or the cessation of operations. In addition,
environmental and health and safety laws and regulations can increase the cost
of planning, designing, installing and operating generating plants. There can
be no assurance that these costs will not have a materially adverse effect on
the Company's financial condition or results of operations in the future. See
"Business and Properties--Environmental Regulation."
 
RISK OF OPERATING GENERATING PLANTS
 
  The Company's operation of generating plants involves many risks, including
the breakdown or failure of power generation equipment, pipelines,
transmission lines or other equipment or processes, fuel interruption and
performance below expected levels of output or efficiency.
 
RISKS OF NATURAL GAS OPERATIONS
 
  The Company's natural gas operations are subject to all of the risks
generally relating to the exploration for and production of natural gas,
including blowouts, fires, equipment failure and other risks which can result
in personal injuries, loss of life and property and environmental damage.
Although the Company believes that it maintains adequate insurance with
respect to its natural gas operations in accordance with industry practice, in
certain circumstances the Company's insurance may not cover or be adequate to
cover the consequences of such events. The occurrence of an event that is not
fully covered by insurance could have a material adverse effect on the
financial position and results of operations of the Company. Moreover, there
can be no assurance that the Company will be able to maintain adequate
insurance in the future at rates that it considers reasonable.
 
FOREIGN EXCHANGE RISKS
 
  Fluctuations in the exchange rate between the pound and the dollar are
likely to affect the market price of the ADSs. Such fluctuations will also
affect the dollar conversion value of any cash dividends paid in pounds to the
Depositary.
 
NO PRIOR MARKET FOR THE ADSS
 
  Prior to the offering, there has been no public market for the ADSs. The
offering price for the ADSs will be determined primarily through negotiations
between the Company and the representatives of the Underwriters. The market
price of the ADSs could be subject to significant fluctuations in response to
various factors and events, including, among other things, the depth and
liquidity of the trading market, variations in the Company's operating results
and the difference between actual results and the results expected by
investors and analysts. In addition, the stock markets in recent years have
experienced broad price fluctuations that have often been unrelated to the
operating performances of companies. These broad market fluctuations also may
adversely affect the market price of the ADSs. The Company has applied for
approval of the ADSs for listing on the Nasdaq National Market. There can be
no assurance that an active public market for the ADSs will develop or, if
developed, will continue, or that the ADSs will trade in the public market at
or above the initial public offering price. See "Underwriting."
 
SHARES ELIGIBLE FOR FUTURE SALE
 
  Sales of substantial amounts of ADSs or Shares in the public market
following the offering, or the perception that such sales may occur, could
have an adverse effect on the market price of the ADSs. Upon completion of the
offering, 25,935,527 Shares will be outstanding and 3,530,900 Shares will be
issuable pursuant to the exercise of outstanding options and warrants.
Moreover, the Company may issue additional shares and options and warrants to
purchase additional shares up to the maximum authorized capital of the
Company, which is proposed to be increased to 50,000,000 Shares at the
extraordinary general meeting of the Company to be
 
                                      14
<PAGE>
 
held on July 2, 1998. See "Description of Share Capital." Subject to an
agreement that restricts the sale of Shares by the officers, directors and
certain shareholders of Independent Energy without the prior approval of
Donaldson, Lufkin & Jenrette Securities Corporation ("DLJ") for 180 days
following the date of this Prospectus, all of the outstanding Shares will be
eligible for public sale, subject to volume and other limitations of Rule 144
under the Securities Act of 1933, as amended (the "Securities Act"). Moreover,
the Company has issued options to its employees and consultants and warrants
to investors under which additional Shares may be issued and the Board of
Directors of the Company has authority to issue further Shares. See
"Management."
 
DILUTION TO NEW INVESTORS
 
  At an assumed initial public offering price of $8.25 (the midpoint of the
offering range set forth on the cover page of this Prospectus), purchasers of
ADSs in the Offering will experience immediate and substantial dilution in the
as adjusted net tangible book value of their Shares in the amount of $5.32 per
ADS. See "Dilution." If the Company issues additional Shares in the future,
including Shares which may be issued pursuant to earn-out arrangements, option
grants or future acquisitions, purchasers of ADSs in the Offering may
experience further dilution in the net tangible book value per share.
 
FUTURE PREEMPTIVE RIGHTS MAY BE UNAVAILABLE TO ADS HOLDERS
 
  The United Kingdom Companies Act 1985 requires the Company, whenever it
issues new Shares for cash, subject to limited exceptions in respect of
employee Share programs, to grant preemptive rights to all of its Shareholders
(including holders of ADSs), giving them the right to purchase a sufficient
number of Shares to maintain their existing ownership percentage. The Company
has proposed to disapply statutory preemptive rights in respect of its
unissued but authorized share capital for the five-year period commencing July
2, 1998. In any event, the Company may not be able to offer preemptive rights
to U.S. holders of ADSs unless a registration statement under the Securities
Act is effective with respect to such rights and underlying Shares, or an
exemption from the registration requirements of the Securities Act is
available. The Company intends to evaluate at the time of any rights offering
the costs and potential liabilities associated with any such registration
statement as well as the indirect benefits to it of enabling U.S. holders of
ADSs to exercise any preemptive rights they may have and any other factors
that the Company considers appropriate at the time, and then make a decision
as to whether to file such a registration statement. No assurance can be given
that any registration statement would be filed or that such registration
statement would be declared effective if filed or that an exemption from
registration would be available. To the extent holders of ADSs are unable to
exercise such rights because a registration statement has not been filed and
declared effective, the Depositary will attempt to sell such holders'
preemptive rights and distribute the net proceeds of the sale, net of the
Depositary's fees and expenses, to the holders of the ADSs, provided that a
secondary market for such rights exists and a premium can be recognized over
the cost of any such sale. A secondary market for the sale of preemptive
rights may develop if the subscription price of the Shares upon exercise of
the rights is below the prevailing market price of the Shares. However, there
can be no assurance both that a secondary market in preemptive rights will
develop in connection with any future issuance of Shares or, if such market
does develop, a premium will be recognized on such sale. If such rights cannot
be sold, they will expire and holders of ADSs will not realize any value from
the grant of such preemptive rights. In either case, the equity interests of
the holders of ADSs would be diluted proportionately. See "Description of
Share Capital--Issue of Additional Shares."
 
                                      15
<PAGE>
 
                        COMPANY BACKGROUND AND HISTORY
 
  In April 1991, Mr. Burt H. Keenan, Executive Chairman of the Company,
founded International Petroleum Services Company ("IPSCO"), a predecessor of
the Company, to provide onshore production services to oil and gas operators
in the U.K, and to acquire U.K. oil and gas licenses. IPSCO sold its
production services business in April 1994. From 1992 to 1995, a subsidiary of
IPSCO and an affiliate acquired U.K. onshore oil and gas licenses with the
objective of developing gas reserves and, in turn, generating electricity from
such reserves for sale in the deregulated market. IEUKL was formed in March
1995, and subsequently acquired IPSCO and its affiliates.
 
  In 1995, the Company adopted its current business strategy in order to
exploit opportunities in electricity marketing created by the ongoing
deregulation of the U.K. electricity industry. In order to implement this
strategy, the Company recruited management with extensive experience in the
marketing, generation, engineering, finance and operations aspects of the U.K.
electricity industry. Mr. John L. Sulley, Managing Director of the Company,
joined the Company from Scottish Power plc in December 1995. In March 1996,
Independent Energy was formed as the holding company for IEUKL and, in May
1996, the Company's Shares commenced trading on AIM.
 
  The principal executive office of the Company is located at Dominion Court,
43 Station Road, Solihull, West Midlands, United Kingdom B91 3RT, and its
telephone number is 011 44 121 705 1111.
 
                                USE OF PROCEEDS
 
  The net proceeds to the Company from the offering are estimated to be $60.2
million ($69.3 million if the Underwriters' over-allotment option is exercised
in full), after deducting underwriting discounts and commissions and fees and
expenses of the offering payable by the Company, assuming an offering price of
$8.25 per ADS (the midpoint of the offering range set forth on the cover page
of this Prospectus). The Company intends to use the net proceeds of the
offering as follows: (i) approximately $28.0 million to fund the equity-
financed portion of the acquisition and installation of gas-fired generating
plants by the Company over the next 18 months and to fund the acquisition of
additional information technology and related equipment to service the
Company's expanding customer base; (ii) approximately $13.3 million to repay
certain outstanding indebtedness; and (iii) the remainder for working capital
and general corporate purposes, including increased working capital
requirements associated with the projected expansion of the Company's
operations and possible strategic acquisitions.
 
  Of the $13.3 million of outstanding indebtedness that the Company intends to
repay with a portion of the proceeds of the offering, (i) $6.7 million
((Pounds)4.0 million) is outstanding under a line of credit with Barclays Bank
plc ("Barclays") due March 31, 1999, which bears interest at a base rate plus
1.75% per annum (9.0% at June 1, 1998), (ii) $4.2 million ((Pounds)2.5
million) is outstanding under an overdraft facility with Barclays due March
31, 1999, which bears interest at a base rate plus 1.5% per annum (8.75% at
June 1, 1998) and (iii) $2.4 million ((Pounds)1.4 million) is outstanding
under promissory notes, which mature December 31, 2002 and bear interest at
10% per annum, payable quarterly.
 
  Although the Company is actively pursuing the acquisition and installation
of the generating plants described above, there can be no assurance regarding
the amount and timing of expenditures for such generating plants or that such
expenditures will not vary materially from those currently contemplated. The
actual amount to be expended for the acquisition and installation of gas-fired
generating plants will depend on a number of factors, including market
conditions in the U.K electricity industry and the Company's success in
attracting new customers.
 
  Pending application of the net proceeds from the offering, the Company
intends to maintain the net proceeds in interest-bearing bank accounts or
invest the proceeds in short-term, investment grade securities.
 
                                      16
<PAGE>
 
                                EXCHANGE RATES
 
  The Company's financial statements are prepared in pounds sterling.
Fluctuation in the exchange rates between the pound and the dollar will affect
the dollar equivalent of the pound prices of the Shares traded on the AIM and,
as a result, are likely to affect the market price of the ADSs in the U.S.
Fluctuations in the exchange rate between the pound and the dollar will also
affect the dollar amounts received by holders of ADSs on conversion by the
Depositary of cash dividends paid in pounds on the Shares represented by the
ADSs. See "Description of American Depositary Receipts."
 
  There are currently no U.K. foreign exchange control restrictions on the
payment of dividends on the Shares.
 
  The table below sets forth, for the periods and dates indicated, the
exchange rate for the dollar against the pound based on the Noon Buying Rate,
expressed in dollars per pound. Such rates are not used by the Company in the
preparation of its consolidated financial statements and the notes thereto
included elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                    DOLLAR/POUND EXCHANGE RATES
                                                        (DOLLAR PER POUND)
                                                    ---------------------------
                                                     AT END   AVERAGE
      YEAR ENDED DECEMBER 31,                       OF PERIOD RATE(1) HIGH LOW
      <S>                                           <C>       <C>     <C>  <C>
      1993.........................................   1.48     1.50   1.59 1.42
      1994.........................................   1.57     1.54   1.64 1.46
      1995.........................................   1.55     1.58   1.64 1.53
      1996.........................................   1.71     1.57   1.71 1.49
      1997.........................................   1.64     1.64   1.70 1.58
      1998 (through June 22).......................   1.67     1.66   1.69 1.61
</TABLE>
- -------------------------
(1) The average of the Noon Buying Rates on the last business day of each full
    month during the relevant period.
 
                                      17
<PAGE>
 
                NATURE OF TRADING MARKET AND MARKET INFORMATION
 
  Prior to the Offering, there has been no public market for the Ordinary
Shares or the ADSs in the United States. The Company's Ordinary Shares
commenced trading on the AIM on May 31, 1996. The AIM is a market designed
primarily for emerging or smaller companies and facilitates capital raising by
such companies. Although regulated by the London Stock Exchange, the listing
and other requirements for AIM companies differ from, and are generally less
demanding than, those of the Official List of the London Stock Exchange.
 
  More than 300 companies are traded on the AIM. Trading volume on the AIM is
substantially less than that on the principal national securities exchanges in
the U.S. or on the Official List of the London Stock Exchange. The liquidity
of securities traded on the AIM is much less than that of companies listed on
more established exchanges.
 
  All companies on AIM are required to appoint a nominated advisor and a
nominated broker. The nominated advisor must be a member firm of the London
Stock Exchange (or other person authorized under the U.K. Financial Services
Act of 1986) and has responsibility for providing a company with advice and
guidance regarding the Company's continuing obligations. The nominated broker
must also be a member firm of the London Stock Exchange and is required upon
request to use best endeavors to find matching bids and offers in a company's
shares. The requirement to match bids and offers does not apply if a market
maker is registered in a company's shares. A market maker is any specialist
permitted to act as a dealer, any member of the London Stock Exchange acting
in the capacity of block positioner and any member of the London Stock
Exchange who, with respect to a security, holds himself out as being willing
to buy and sell such security for his own account on a regular or continuous
basis.
 
  Trading on AIM occurs through the London Stock Exchange Alternative Trading
Service, SEATS PLUS. SEATS PLUS acts as an "order board," enabling buyers and
sellers to trade shares through the London Stock Exchange's central trading
system. It allows market makers to display firm, indicative or mid-prices in a
company's shares throughout the day and displays the details of each company's
recent trades.
 
  Reporting and settlement of trades are the same on AIM as they are for
shares quoted on the Official List of the London Stock Exchange. Transactions
in the Ordinary Shares may be effected through the CREST system, which enables
shares to be held and transferred in the electronic form or may be held and
transferred in physical form. Under the AIM rules, physical transfers of a
company's shares should be entered on a company's register and new
certificates dispatched within 14 days of receipt of transfer documents.
 
                                      18
<PAGE>
 
  The following table reflects the high and low sales price per Share, as
reported on the AIM since May 31, 1996 when the Shares commenced trading.
 
<TABLE>
<CAPTION>
                                                       PENCE PER       $ PER
                                                         SHARE        ADS(1)
                                                      ------------  -----------
                                                      HIGH    LOW   HIGH   LOW
      <S>                                             <C>    <C>    <C>   <C>
      1996
        Second quarter............................... 115.0p 106.0p $1.75 $1.63
        Third quarter................................ 108.0   83.5   1.68  1.30
        Fourth quarter...............................  89.5   57.5   1.40  0.98
      1997
        First quarter................................  69.5   57.5   1.14  0.97
        Second quarter...............................  92.5   72.5   1.54  1.18
        Third quarter................................ 124.5   87.5   2.00  1.48
        Fourth quarter............................... 144.5  119.5   2.41  1.95
      1998
        First quarter................................ 385.0  136.5   6.46  2.26
        Second quarter (through June 22, 1998)....... 610.0  325.0   9.95  5.44
</TABLE>
- -------------------------
(1) The reported high and low prices for the Shares expressed as pence per
    Share have been translated into dollars per ADS (each representing one
    Share) by converting that amount at the Noon Buying Rate on the dates of
    such respective high and low prices.
 
  As of April 30, 1998, there were approximately 802 holders of Ordinary
Shares, of which 60.6% of the total outstanding Shares were held of record by
persons with United States and Canadian addresses.
 
  On June 22, 1998, the AIM closing bid price for the Shares was 605.0p per
Share.
 
  The average daily trading volume for the Shares for the years ended December
31, 1996 and 1997 and for the five months ended May 31 , 1998 was 14,959,
18,872 and 37,922 Shares, respectively.
 
                                DIVIDEND POLICY
 
  The Company has never declared or paid any dividends on its Ordinary Shares.
The Company currently intends to retain all future earnings to finance future
operations. Moreover, under the Companies Act 1985, dividends may only be paid
out of the profits of the Company legally available for distribution. See
"Description of Share Capital."
 
                                      19
<PAGE>
 
                                CAPITALIZATION
 
  The following table sets forth as of March 31, 1998 (i) the actual
capitalization of the Company and (ii) the consolidated capitalization of the
Company as adjusted to give effect to the offering (assuming a price per ADS
of $8.25 (the midpoint of the offering range set forth on the cover page of
the Prospectus) and the application of estimated net proceeds therefrom of
$60.2 million ((Pounds)35.8 million). See "Use of Proceeds." This table should
be read in conjunction with the "Selected Consolidated Financial Data,"
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and the consolidated financial statements of the Company and the
notes thereto included elsewhere herein.
 
<TABLE>
<CAPTION>
                                           MARCH 31, 1998
                         -----------------------------------------------------
                               ACTUAL           AS ADJUSTED      AS ADJUSTED(1)
<S>                      <C>                 <C>                 <C>
Long-term debt
 (including current
 portion thereof)....... (Pounds)13,420,433  (Pounds)12,020,433   $20,194,328
Shareholders' equity(2)
  Ordinary Shares,
   nominal value 1p per
   share, 28,000,000
   Shares authorized,
   17,793,027 Shares
   issued and
   outstanding..........            177,930             257,930       433,323
  Additional paid-in
   capital..............         10,613,508          46,372,794    77,906,294
  Retained deficit......         (1,662,932)         (1,662,932)   (2,793,726)
                         ------------------  ------------------   -----------
Total shareholders'
 equity................. (Pounds) 9,128,506  (Pounds)44,967,792   $75,545,891
                         ------------------  ------------------   -----------
Total capitalization.... (Pounds)22,548,939  (Pounds)56,988,225   $95,740,219
                         ==================  ==================   ===========
</TABLE>
- -------------------------
(1) Translations into dollars in this table are solely for convenience and are
    computed at the Noon Buying Rate on March 31, 1998 of $1.68 per (Pounds)1.
    The Noon Buying Rate on June 22, 1998 was (Pounds)1.67 per $1.
(2) Excludes 3,673,400 Shares issuable on March 31, 1998 pursuant to
    outstanding options and warrants.
 
                                      20
<PAGE>
 
                                   DILUTION
 
  Dilution per Share equals the difference between the offering price per
Share (as represented by an ADS) and the net tangible book value per Share
after giving effect to the offering. The net tangible book value per Share has
been determined by dividing the net tangible book value of the Company
determined in accordance with U.K. GAAP (total tangible asset book value less
total liabilities) by the number of outstanding Shares on March 31, 1998
(excluding 3,673,400 Shares issuable on March 31, 1998 pursuant to outstanding
options and warrants). At March 31, 1998, the net tangible book value per
Share was $0.86 (at the Noon Buying Rate on such date). After giving effect to
the sale by Independent Energy of 8,000,000 ADSs at $8.25 per ADS (the mid
point of the offering range set forth on the cover page of this Prospectus)
and after deducting underwriting discounts, commissions and fees and expenses,
the net tangible book value of the Company at March 31, 1998 would have been
$75.5 million, or $2.93 per Share (at the Noon Buying Rate). This represents
an immediate dilution of $5.32 per Share to new investors purchasing ADSs in
the offering and an immediate increase in net tangible book value of $2.07 per
Share to the Company's existing shareholders, as illustrated in the following
table:
 
<TABLE>
<S>                                                                 <C>   <C>
Assumed offering price per Share (represented by an ADS)...........       $8.25
  Net tangible book value per Share at March 31, 1998 before the
   Offering........................................................ $0.86
  Increase in net tangible book value per Share attributable to new
   investors.......................................................  2.07
                                                                    -----
Net tangible book value per Share after the Offering(1)............        2.93
                                                                          -----
Dilution per ADS to new investors..................................       $5.32
                                                                          =====
</TABLE>
- -------------------------
(1) Determined by dividing the total number of Shares assumed to be
    outstanding after the Offering into the pro forma net tangible book value
    of the Company allocable to such Shares, after giving effect to the
    application of the net proceeds of the offering (assuming no exercise of
    the Underwriters' over-allotment option).
 
  If the Underwriters' over-allotment option is exercised in full, the
increase in net tangible book value per Share attributable to the Offering,
net tangible book value per Share after giving effect to the Offering and
dilution per Share to new investors would be $2.28, $3.14, and $5.11,
respectively.
 
  The following table sets forth, as of March 31, 1998, the differences
between the existing shareholders of Independent Energy and the new investors
with respect to the number of ADSs purchased or to be purchased from
Independent Energy, the average price per Share or ADS, as applicable, and the
total consideration paid or to be paid.
 
<TABLE>
<CAPTION>
                                   SHARES
                                PURCHASED(1)     AVERAGE  TOTAL CONSIDERATION
                             ------------------   PRICE   ----------------------
                               NUMBER   PERCENT PER SHARE   AMOUNT       PERCENT
<S>                          <C>        <C>     <C>       <C>            <C>
Current shareholders........ 17,793,027   69.0%   $1.02   $18,129,616(2)   21.5%
Investors in the offering...  8,000,000   31.0     8.25    66,000,000      78.5
                             ----------  -----    -----   -----------     -----
  Total..................... 25,793,027  100.0%   $3.26   $84,129,616     100.0%
                             ==========  =====    =====   ===========     =====
</TABLE>
- -------------------------
(1) Assumes no exercise by the Underwriters of their over-allotment option.
(2) Total contributed capital prior to the Offering.
 
                                      21
<PAGE>
 
                     SELECTED CONSOLIDATED FINANCIAL DATA
 
  The following tables present selected consolidated financial data for the
Company. The selected consolidated financial data as of and for each of the
two years in the period ended December 31, 1995, as of and for the six months
ended June 30, 1996, as of and for the fiscal year ended June 30, 1997 and as
of and for the nine months ended March 31, 1998 have been derived from the
audited consolidated financial statements of the Company and the notes thereto
included elsewhere in this Prospectus. The selected consolidated financial
data for the nine months ended March 31, 1997 have been derived from the
unaudited consolidated financial statements of the Company included elsewhere
herein and, in the opinion of the Company, have been prepared on a basis
substantially consistent with that of the audited periods. In the opinion of
the Company, the unaudited interim financial statements reflect all
adjustments necessary to present fairly such information for the nine month
period ended March 31, 1997. The selected consolidated financial data as of
and for the year ended December 31, 1993 have been derived from the audited
consolidated financial statements of the Company which are not included in
this Prospectus.
 
  The Company's consolidated financial statements have been prepared in
accordance with U.K. GAAP which differ in certain significant respects from
U.S. GAAP. Notes 29 and 30 to the Company's consolidated financial statements
describe the principal differences between U.K. GAAP and U.S. GAAP as they
relate to the Company and provide a reconciliation to U.S. GAAP of net profit
or loss and shareholders' equity. The selected consolidated financial data
should be read in conjunction with "Management's Discussion and Analysis of
Financial Condition and Results of Operations" and the Company's consolidated
financial statements and the notes thereto included elsewhere in this
Prospectus.
 
<TABLE>
<CAPTION>
                            YEARS ENDED DECEMBER 31,
                  -------------------------------------------------   SIX MONTHS ENDED   FISCAL YEAR ENDED
                       1993             1994             1995          JUNE 30, 1996       JUNE 30, 1997
<S>               <C>              <C>              <C>               <C>                <C>
STATEMENT OF
 OPERATIONS
 DATA:
U.K. GAAP
Revenue from
 continuing
 operations.....  (Pounds)    --   (Pounds)    --   (Pounds)  4,701   (Pounds) 173,701   (Pounds)11,127,164
Revenue from
 discontinued
 operations(2)..         452,641          118,589                --                 --                   --
Cost of sales...         309,884          127,327                --            171,448           10,872,238
Administrative
 expenses.......          47,408           55,367            90,915            492,199            1,363,343
Depreciation and
 amortization...          41,399           39,674             2,858              5,681              141,850
Loss from
 continuing
 operations.....          (7,631)              --           (89,072)          (495,627)          (1,250,267)
Profit (loss)
 from
 discontinued
 operations.....          61,581         (103,779)               --                 --                   --
Exceptional
 items..........              --          168,191                --           (460,983)                  --
Interest
 (expense)
 income, net....          (1,554)           3,275            24,029             65,417               68,674
Income tax
 expense
 (credit).......              --            9,000            (5,576)                --                   --
Net profit
 (loss).........  (Pounds)52,396   (Pounds)58,687   (Pounds)(59,467)  (Pounds)(891,193)  (Pounds)(1,181,593)
Earnings (loss)
 per share......           167.3 p          187.4 p          (176.8)p             (9.9)p               (9.0)p
Weighted average
 shares
 outstanding....          31,314           31,314            33,641          8,981,076           13,129,914
U.S. GAAP
Revenue from
 continuing
 operations.....  (Pounds)    --   (Pounds)    --   (Pounds)  4,701   (Pounds) 173,701   (Pounds)11,127,164
Loss from
 continuing
 operations.....          (7,631)              --           (59,467)        (1,001,908)          (1,369,688)
Net profit
 (loss).........          52,396           58,687           (59,467)        (1,001,908)          (1,369,688)
Earnings (loss)
 per share......           167.3 p          187.4 p          (176.8)p            (11.1)p              (10.4)p
Earnings (loss)
 per share from
 continuing
 operations.....           (24.4)p             --            (176.8)p            (11.1)p              (10.4)p
Weighted average
 number of
 shares
 outstanding....          31,314           31,314            33,641          8,981,076           13,129,914
<CAPTION>
                            NINE MONTHS ENDED MARCH 31,
                  -----------------------------------------------------
                        1997                 1998            1998(1)
                     (UNAUDITED)
<S>               <C>                 <C>                  <C>       
STATEMENT OF
 OPERATIONS
 DATA:
U.K. GAAP
Revenue from
 continuing
 operations.....  (Pounds)5,490,338   (Pounds)34,921,839   $58,668,690
Revenue from
 discontinued
 operations(2)..                 --                   --            --
Cost of sales...          5,360,559           33,634,538    56,506,024
Administrative
 expenses.......          1,036,849            1,337,395     2,246,824
Depreciation and
 amortization...             97,299              301,608       506,701
Loss from
 continuing
 operations.....         (1,004,369)            (351,702)     (590,859)
Profit (loss)
 from
 discontinued
 operations.....                 --                   --            --
Exceptional
 items..........                 --                   --            --
Interest
 (expense)
 income, net....             44,809              (74,403)     (124,997)
Income tax
 expense
 (credit).......                 --                   --            --
Net profit
 (loss).........  (Pounds) (959,560)  (Pounds)  (426,105)  $  (715,856)
Earnings (loss)
 per share......               (7.3)p               (2.5)p $     (0.04)
Weighted average
 shares
 outstanding....         13,124,800           16,967,802    16,967,802
U.S. GAAP
Revenue from
 continuing
 operations.....  (Pounds)5,490,338   (Pounds)34,921,839   $58,668,690
Loss from
 continuing
 operations.....         (1,100,630)            (521,709)     (876,471)
Net profit
 (loss).........         (1,100,630)            (521,709)     (876,471)
Earnings (loss)
 per share......               (8.4)p               (3.1)p $     (0.05)
Earnings (loss)
 per share from
 continuing
 operations.....               (8.4)p               (3.1)p $     (0.05)
Weighted average
 number of
 shares
 outstanding....         13,124,800           16,967,802    16,967,802
</TABLE>
                                                  (footnotes on following page)
 
                                      22
<PAGE>
 
<TABLE>
<CAPTION>
                                    DECEMBER 31,                                   JUNE 30,
                 --------------------------------------------------- ------------------------------------
                      1993             1994              1995              1996               1997
<S>              <C>             <C>               <C>               <C>               <C>
BALANCE SHEET
 DATA:
U.K. GAAP
Total assets.... (Pounds)919,804 (Pounds)1,123,878 (Pounds)3,053,064 (Pounds)7,995,040 (Pounds)16,851,935
Long-term
 liabilities....         333,852                --                --           830,212          5,937,925
Shareholders'
 equity.........         409,266           467,953         2,983,728         6,787,015          6,957,569
U.S. GAAP
Total assets.... (Pounds)919,804 (Pounds)1,123,878 (Pounds)3,143,144 (Pounds)8,333,378 (Pounds)17,226,966
Long-term
 liabilities....         333,852                --            90,080         1,279,265          6,611,766
Shareholders'
 equity.........         409,266           467,953         2,983,728         6,676,300          6,658,795
<CAPTION>
                           MARCH 31,
                 ------------------------------
                        1998          1998(1)
<S>              <C>                <C>
BALANCE SHEET
 DATA:
U.K. GAAP
Total assets.... (Pounds)31,145,922 $52,325,149
Long-term
 liabilities....         11,155,703  18,741,158
Shareholders'
 equity.........          9,128,506  15,335,890
U.S. GAAP
Total assets.... (Pounds)31,536,121 $52,980,683
Long-term
 liabilities....         11,940,316  20,059,731
Shareholders'
 equity.........          8,734,092  14,673,275
</TABLE>
- -------------------------
(1) Translations into dollars in this table are for convenience only and are
    computed at the Noon Buying Rate on March 31, 1998 of $1.68 per (Pounds)1.
(2) The Company sold its oil and gas production services business in April
    1994. Accordingly, revenue and operating profit (loss) associated with such
    operations for the years ended December 31, 1993 and 1994 are reflected as
    discontinued operations.
 
                                       23
<PAGE>
 
                     MANAGEMENT'S DISCUSSION AND ANALYSIS
               OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
  The following discussion is intended to assist in an understanding of the
Company's financial position as of March 31, 1998 and its results of
operations for the year ended December 31, 1995, the six months ended June 30,
1996, the fiscal year ended June 30, 1997 and the nine months ended March 31,
1997 and 1998. The Company's consolidated financial statements and notes
included elsewhere in this Prospectus contain additional information and
should be referred to in conjunction with this discussion. Such financial
statements have been prepared in accordance with U.K. GAAP, which differs in
certain significant respects from U.S. GAAP. Notes 29 and 30 to the Company's
consolidated financial statements provide a description of the principal
differences between U.K. GAAP and U.S. GAAP as they relate to the Company, and
a reconciliation of U.S. GAAP of net income (loss) and shareholders' equity.
 
OVERVIEW
 
  Independent Energy is the largest independent marketer of electricity in the
United Kingdom (i.e., not a part of the government-owned electricity industry
at the time of its privatization in 1990). The Company was founded to
capitalize on the market opportunities created by the deregulation of the
United Kingdom electricity market. Since commencing marketing operations in
April 1996, management believes that it has established Independent Energy as
a reliable alternative provider of electricity. The Company currently has over
1,400 customers, primarily in the light industrial, commercial and public
sector markets. The Company increased its revenue from (Pounds)11.1 million
($18.6 million) for the fiscal year ended June 30, 1997 to (Pounds)34.9
million ($58.6 million) for the nine months ended March 31, 1998. The
Company's revenue for the two months ended May 31, 1998 was (Pounds)14.8
million ($24.9 million).
 
  The Company has incurred operating and net losses of approximately
(Pounds)2.1 million and (Pounds)2.5 million, respectively, in the aggregate,
through March 31, 1998 since commencing electricity supply operations. The
Company expects to increase its revenues pending the final phase of
deregulation of the U.K. electricity market. The Company will incur certain
additional fixed costs in anticipation of its increase in sales as well as
variable costs that increase proportionally with sales. The Company's ability
to achieve profitability will depend in large measure on its ability to
attract a sufficient number of customers to permit its fixed cost base to
decline in relation to its number of customers and as a percentage of
revenues. See "Risk Factors--Historical Operating Losses." The final phase of
deregulation of the supply segment of the industry is currently scheduled to
begin in September 1998; however, the final phase was initially scheduled to
occur in April 1998 and was subsequently postponed. If deregulation is further
postponed, the Company's operations and financial condition could be
materially adversely affected. See "Risk Factors--Government Regulation; Risk
of Postponement of Final Phase of Deregulation."
 
  Revenue from the sale of electricity is recognized by the Company on a
monthly basis based on the volume of electricity consumed by its customers as
determined by month-end meter readings and the contract prices associated with
such volume. Customers are billed monthly, generally at a fixed price for
usage. Because the cost of electricity purchased from the Pool fluctuates
throughout the term of sales contracts, the Company recognizes gross profit
related to electricity sales on a pro rata basis throughout the term of sales
contracts based on an estimated gross profit margin for all sales contracts.
The estimated gross profit margin considers the estimated cost of electricity,
the effects of hedging contracts entered into by the Company to mitigate Pool
price exposure, transmission and distribution costs, commissions and all other
costs of sales in supplying the electricity. The difference between the cash
cost of the electricity and the estimated cost of sales based on the estimated
gross profit margin is accounted for as either an accrual for, or a deferral
of, the cost of electricity and recorded on the balance sheet within current
assets or current liabilities, as the case may be. The Company reconciles the
difference between actual gross profit and estimated gross profit on a
quarterly basis. See "Risk Factors--Risk Related to Electricity Price
Fluctuations; Risk Related to Gross Profit Recognition Policy" and "--
Liquidity and Capital Resources."
 
  Because the Company generally sells electricity at fixed prices and
purchases most of its electricity at fluctuating prices, the Company is
exposed to risk arising from the difference between these prices. The
 
                                      24
<PAGE>
 
Company's risk management practices are comprised of three material elements:
(i) entering into CFDs to effectively fix the price of a portion of its
electricity requirements purchased from the Pool; (ii) targeting customers
that have relatively predictable demand and pattern usage profiles; and (iii)
generating a portion of the electricity it supplies to customers. See "--Risk
Management Activities."
 
RESULTS OF OPERATIONS
 
 NINE MONTHS ENDED MARCH 31, 1998 COMPARED TO NINE MONTHS ENDED MARCH 31, 1997
 
  Revenue. Revenue for the nine months ended March 31, 1998 increased
(Pounds)29.4 million, or 536%, to (Pounds)34.9 million from (Pounds)5.5
million for the nine months ended March 31, 1997. The increase reflected a
substantial increase in the Company's sales volume of electricity to 842 GWh
from 131 GWh in the 1997 period, a 542% increase, primarily as a result of the
Company's increased marketing efforts.
 
  Gross profit. Gross profit for the nine months ended March 31, 1998
increased (Pounds)1.1 million to (Pounds)1.3 million from (Pounds)130,000 for
the nine months ended March 31, 1997. As a percentage of revenue, gross profit
for the 1998 period was 3.7% compared to 2.4% in the 1997 period. This
increase was primarily due to the increase in electricity sales derived from
Company's generated electricity, which generally have higher margins. In the
1998 period, the Company generated 26.2 GWh of electricity compared to 5.3 GWh
in the 1997 period. In addition, the additional electricity generated by the
Company in the 1998 period was from new larger plants at Trumfleet and
Caythorpe that produce electricity at lower costs, thereby further increasing
margins.
 
  Administrative expenses. Administrative expenses for the nine months ended
March 31, 1998 increased (Pounds)300,000, or 29%, to (Pounds)1.3 million from
(Pounds)1.0 million for the nine months ended March 31, 1997. As a percentage
of revenue, administrative expenses for the 1998 period were 4% compared to
19% in the 1997 period as the Company's administrative expenses in the 1997
period reflected primarily fixed costs which did not increase materially in
the 1998 period.
 
  Depreciation and amortization. Depreciation and amortization expense for the
nine months ended March 31, 1998 was (Pounds)302,000 compared to
(Pounds)97,000 for the 1997 period. The increase was primarily the result of
depreciation related to two new generation plants that commenced operations in
the 1998 period, one in December 1997 and one in March 1998.
 
  Operating loss. The operating loss decreased for the nine months ended March
31, 1998 to (Pounds)351,000 compared to (Pounds)1.0 million for the nine
months ended March 31, 1997. The reduction in the loss for the 1998 period was
due to increased sales volumes, increased gross profit and reduced operating
expenses as a percentage of revenue as described above.
 
  Interest income (expense). The Company had net interest expense of
(Pounds)74,000 in the 1998 period compared to net interest income of
(Pounds)45,000 in the 1997 period. The change was primarily due to increased
interest expense associated with debt financing used for two new generating
plants in the 1998 period.
 
 YEAR ENDED JUNE 30, 1997 COMPARED TO TWELVE MONTHS ENDED JUNE 30, 1996
 
  Revenue. Revenue for the fiscal year ended June 30, 1997 increased
(Pounds)10.9 million to (Pounds)11.1 million from (Pounds)178,000 for the
twelve months ended June 30, 1996. The Company commenced sales of electricity
in April 1996. The increase in sales volume was a result of a full year of
commercial operations in fiscal 1997.
 
  Gross profit. Gross profit for the year ended June 30, 1997 increased to
(Pounds)255,000 from (Pounds)2,000 for the twelve months ended June 30, 1996.
As a percentage of revenue, gross profit for the year ended June 30, 1997 was
2.3% compared to 1.3% for the twelve months ended June 30, 1996. The increase
was primarily due to sourcing electricity from the Company's generating plants
(7.1 GWh or 3% of revenue) which generally result in higher margins. The
Company did not generate any electricity in the twelve months ended June 30,
1996. In addition, the unit price of electricity purchased from the Pool was
lower in the year ended June 30, 1997 than for the twelve months ended June
30, 1996, thereby further increasing margins for fiscal 1997.
 
  Administrative expenses. Administrative expenses for the year ended June 30,
1997 increased (Pounds)818,000, or 150%, to (Pounds)1.4 million from
(Pounds)545,000 for the twelve months ended June 30, 1996. Moreover, as a
percentage of revenue, administrative expenses for the 1997 period were 12.3%
compared to 305.4% in the 1996 period. This
 
                                      25
<PAGE>
 
increase resulted primarily from increased marketing activities and additional
staff hired as the Company expanded its operations.
 
  Depreciation and amortization. Depreciation and amortization for the year
ended June 30, 1997 was (Pounds)140,000 compared to (Pounds)6,000 for the
twelve months ended June 30, 1996. The increase was primarily a result of
depreciation related to the Company's Elswick generating plant which commenced
operations in July 1996.
 
  Operating loss. Operating loss increased for the fiscal year ended June 30,
1997 to (Pounds)1.3 million compared to (Pounds)544,000 for the twelve months
ended June 30, 1996. The increase in the loss for the 1997 period was due to
operating expenses increasing as the Company formed its marketing and
administrative organization and commenced marketing activities. Such expenses
constitute primarily fixed overhead expenses and should decrease as a
percentage of revenue as the Company expands its operations.
 
  Interest income (expense). The Company had net interest income of
(Pounds)69,000 in the year ended June 30, 1997 compared to net interest income
of (Pounds)77,000 for the twelve months ended June 30, 1996. Interest income
decreased in the year ended June 30, 1997 primarily as a result of interest
expense of (Pounds)120,000 in the year ended June 30, 1997 resulting from
financing of a new generating plant in fiscal 1997 which partially offset
increased interest income resulting from greater cash on deposit resulting
from equity placements.
 
 SIX MONTHS ENDED JUNE 30, 1996
 
  The Company began marketing electricity in January 1996 and generated its
first revenue from electricity sales in April 1996 resulting in revenue for
the six months ended June 30, 1996 of (Pounds)174,000. There was no revenue
from the sale of electricity prior to this period. Gross profit in this period
was 1.3%. The operating expenses during the period were (Pounds)498,000
including costs associated with establishing the Company's marketing
organization and initiating marketing activities. All of these costs were
expensed during the period. The period resulted in a net operating loss of
(Pounds)496,000 due to the relatively low revenue during the start-up period
and expenses related to development of the business.
 
  The exceptional loss of (Pounds)461,000 incurred in the 1996 period related
to the adjustment of the carrying cost of a drilling rig owned by the Company
to fair market value.
 
 YEAR ENDED DECEMBER 31, 1995
 
  The Company's activity in 1995 was limited to the development of its gas
licenses and start-up costs associated with the electricity marketing and
generating business. The Company utilizes the gas reserves from its licenses
properties to fuel its generating plants.
 
LIQUIDITY AND CAPITAL RESOURCES
 
  The Company's principal uses of funds have been to (i) fund operating losses
associated with being a development stage company, (ii) fund working capital
requirements and (iii) fund capital expenditures, primarily the acquisition
and installation of gas-fired generating plants. From January 1, 1996 through
March 31, 1998, these activities utilized funds of (Pounds)2.1 million,
(Pounds)2.7 million and (Pounds)11.3 million, respectively.
 
  The Company has financed its funding requirements through a combination of
equity issuances, capital lease financings and borrowings. Since 1994, the
Company has raised an aggregate of (Pounds)10.4 million through four equity
placements in the U.K. and the U.S.
 
  The Company has a credit facility with Barclays Bank plc (the "Credit
Facility"), which provides for aggregate borrowings and letters of credit of
(Pounds)18.4 million consisting of (i) a (Pounds)5.0 million revolving
construction facility payable in quarterly payments of (Pounds)250,000 with
interest of LIBOR plus 2.5% (10.2% at June 1, 1998), (ii) a line of credit of
(Pounds)4.0 million due March 31, 1999 which bears interest at a base rate
plus 1.75% (9.0% at June 1, 1998), (iii) (Pounds)6.9 million in the form of
letters of credit to secure Pool electricity purchase obligations and
obligations under CFDs and (iv) a (Pounds)2.5 million overdraft facility due
March 31, 1999 which bears interest at a base rate plus 1.5% (8.75% at June 1,
1998). As of June 25, 1998, the Company had outstanding borrowings under the
Credit Facility of (Pounds)9.5 million and had utilized commitments to issue
letters of credit in the aggregate
 
                                      26
<PAGE>
 
amount of (Pounds)6.9 million. In addition, in June 1997, the Company issued
(Pounds)1.4 million of promissory notes, which mature December 31, 2002 and
bear interest at 10% per annum, payable quarterly. The Company intends to
repay (Pounds)7.9 million ($13.3 million) of outstanding indebtedness with a
portion of the net proceeds from the offering, comprised of (i) (Pounds)4.0
million ($6.7 million) outstanding under the line of credit, (ii) (Pounds)2.5
million ($4.2 million) outstanding under the overdraft facility and (iii)
(Pounds)1.4 million ($2.4 million) outstanding under the promissory notes. See
"Use of Proceeds."
 
  The Company has historically financed its generating plants primarily
through capital leases and debt financing. In June 1996, the Company executed
a capital lease for Elswick for $1.5 million. The lease is payable in
quarterly payments of $57,891 over a five-year initial term and secured by the
generating assets located at the Elswick site. After the initial term, the
Company can either extend the term for an additional five years at the then
prime rate plus 1%, or purchase the equipment for 50% of its original cost.
After ten years, the Company can purchase the equipment for $1. In June 1997,
a capital lease for gas generator systems was executed for (Pounds)4.4
million. This lease is payable in six monthly payments of (Pounds)31,423
commencing July 23, 1997 followed by 78 monthly payments of (Pounds)69,734.
The primary term of seven years can be extended indefinitely for an annual
payment of (Pounds)10,958. In October 1997, the Company entered into a capital
lease covering gas generator systems for (Pounds)2.7 million. This lease is
payable in quarterly payments commencing January 31, 1998 in varying amounts.
The primary term of six years can be extended by the Company indefinitely for
an annual payment of (Pounds)6,664.
 
  The Company estimates that its capital expenditure requirements related to
the acquisition and installation of additional generating plants for the
remainder of calendar year 1998 and for calendar year 1999 will be
approximately (Pounds)15.2 million and (Pounds)73.8 million, respectively. The
Company has historically financed its generating plants primarily through
capital lease and debt financing with equity financing representing 7% to 10%
of the aggregate financing requirements. Following the offering, the Company
expects to increase the equity portion of such capital requirements by up to
15%. Accordingly, the Company expects to use (Pounds)13.7 million ($23.0
million) of the net proceeds from the offering to fund the equity-financed
portion of the acquisition and installation of gas-fired generating plants by
the Company through the end of 1999. However, although the Company is actively
pursuing the acquisition and installation of the generating plants described
above, there can be no assurance regarding the amount and timing of
expenditures for such generating plants or that such expenditures will not
vary materially from those currently contemplated. The actual amount to be
expended for the acquisition and installation of gas-fired generating plants
will depend on a number of factors, including market conditions in the U.K.
electricity industry and the Company's success in attracting new customers.
See "Use of Proceeds" and "Business--Electricity Generation."
 
  The Company estimates that its capital expenditure requirements related to
the final phase of supply deregulation commencing in September 1998 will be
(Pounds)3.0 million ($5.0 million) and will be funded with a portion of the
net proceeds from the offering. Such expenditures will primarily be used to
acquire certain information technology and related equipment associated with
expanding its customer base.
 
  The Company purchases substantially all of its electricity from the Pool
which is required to be paid 28 days in arrears. In contrast, the Company
bills its customers monthly and receives payments from such billings on
average approximately 25 days therefrom. Thus, the Company has significant
working capital requirements due to these timing differences. In addition,
during the colder months (October through April) when Pool prices are
generally higher than the average yearly Pool price, the Company requires
additional working capital to fund the increased cost of electricity during
such months. The Company has taken a number of measures to reduce its working
capital need, including encouraging customers to adopt shorter billing and
collection cycles and to utilize direct debit as a means of payment. As the
Company expands its base of operations, it expects working capital needs to
increase significantly.
 
  The Company believes that the net proceeds from the offering of ADSs,
capital lease and other debt financing and cash generated from operations will
be adequate to fund such capital expenditure requirements and working capital
needs related to the expansion of its operations.
 
                                      27
<PAGE>
 
RISK MANAGEMENT ACTIVITIES
 
  Independent Energy is exposed to two principal risks associated with its
customers' contracts: "load shape" risk (the risk associated with a shift in
the customer's usage pattern, including absolute amounts demanded and timing
of amounts demanded) and "purchase" price risk (the cost of purchased
electricity relative to the price received from the supply customer).
Generally, load shape risk decreases as Independent Energy's portfolio of
supply customers in the supply market increases. Independent Energy manages
Pool price risk by employing a variety of risk management tools, including
entering into CFDs, management of its supply contract portfolio, and through
the ownership of generating facilities to produce a portion of its required
supply of electricity. The Company has in the past and intends to continue to
enter into CFDs which are contracts between generators and suppliers that have
the effect of fixing the price of electricity for a contracted quantity of
electricity over a specific time period. Differences between the actual price
set by the Pool and the agreed prices give rise to different payments between
the parties to the particular CFD. Independent Energy's ability to manage its
purchase price risk depends, in part, on the future availability of properly
priced risk management mechanisms such as CFDs.
 
  As of June 25, 1998, the Company had effective sales contracts in place to
supply an estimated 1,377 GWh of electricity through June 1999 and had CFDs in
place to fix the purchase price of 1,009 GWh of such demand. In addition, in
order to hedge against Pool price fluctuations related to renewals of sales
contracts and future growth, the Company's CFDs in place also fix the purchase
price of an additional 248 GWh of electricity through October 1999. As of June
25, 1998, the aggregate commitment of the Company under CFDs was (Pounds)34.3
million. Self-generation of electricity by the Company also provides a hedge
against electricity price fluctuations since the cost of the Company's
generated electricity has historically been less than sales prices. The
Company estimates that its three existing generating plants and the three
proposed plants expected to be operating by the end of 1998 will provide it
with an additional 158 GWh and 160 GWh of electricity, respectively, for the
fiscal year ending June 30, 1999. As a result of its expected growth in
revenue arising from the commencement of the final phase of deregulation, the
Company has adopted a hedging policy which consists of entering into CFDs and
continuing to generate a portion of its electricity requirements to
effectively hedge a significant portion of its total estimated demand based on
effective sales contracts in place at such time.
 
RECONCILIATION OF U.K. GAAP TO U.S. GAAP
 
  The Company's consolidated financial statements are prepared in accordance
with U.K. GAAP. There are significant differences between U.K. GAAP and U.S.
GAAP.
 
  The principal difference between U.K. GAAP and U.S. GAAP relevant to the
Company occurs with respect to accounting for variable employee share options
under the Company's option program. Although the Company does not have a
formal option plan, the Company has granted options to acquire Shares to
substantially all employees of the Company. Under U.K. GAAP, the Company does
not recognize compensation cost related to the option program as described
below.
 
  Under Accounting Principles Board ("APB") No. 25, compensation for services
that the Company received as consideration for Shares issued pursuant to the
exercise of options are recognized as the difference between the quoted market
price of the number of Shares issuable pursuant to options at the measurement
date less the aggregate exercise price for Shares issuable pursuant to such
options. Compensation cost related to the option program as determined under
U.S. GAAP would have been (Pounds)111,000, (Pounds)188,000 and (Pounds)96,000
for the fiscal years ended June 30, 1996 and 1997 and the nine months ended
March 31, 1998, respectively. There was no compensation cost related to its
option program for the year ended December 31, 1995.
 
  The Company's net losses for the fiscal years ended June 30, 1996 and 1997
and the nine months ended March 31, 1998, under U.K. GAAP were
(Pounds)891,000, (Pounds)1.2 million and (Pounds)426,000, respectively. Under
U.S. GAAP, the Company would have reported net losses of (Pounds)1.0 million,
(Pounds)1.4 million and (Pounds)522,000 for the periods ended June 30, 1996
and 1997 and March 31, 1998, respectively. There was no change in the net
income or losses reported for the year ended December 31, 1995 under U.S.
GAAP.
 
  Notes 29 and 30 to the Company's consolidated financial statements provide a
description of these and other differences between U.K. GAAP and U.S. GAAP.
 
                                      28
<PAGE>
 
                            BUSINESS AND PROPERTIES
 
OVERVIEW
 
  Independent Energy is the largest independent marketer of electricity in the
United Kingdom (i.e., not a part of the government-owned electricity industry
at the time of its privatization in 1990). The Company was founded to
capitalize on the market opportunities created by the deregulation of the
United Kingdom electricity market and has assembled a core management team
with extensive industry experience from a number of leading U.K. energy firms,
including Scottish Power, National Power, Scottish Hydro and Midlands
Electricity. Since commencing electricity sales in April 1996, management
believes that it has established Independent Energy as a reliable alternative
provider of electricity. The Company currently has over 1,400 customers,
primarily in the light industrial, commercial and public sector markets. The
Company increased its revenue from (Pounds)11.1 million ($18.6 million) for
the fiscal year ended June 30, 1997 to (Pounds)34.9 million ($58.6 million)
for the nine months ended March 31, 1998. The Company's revenue for the two
months ended May 31, 1998 was (Pounds)14.8 million ($24.9 million).
 
  Deregulation of the U.K. electricity industry commenced in April 1990 and
has encompassed each of the supply (marketing), transportation and generation
segments of the industry. The supply segment is being deregulated in three
phases. The first two phases have been completed and enabled consumers with
100 kW or greater peak demand to choose their electricity supplier. The final
phase will enable all remaining consumers to choose their supplier and is
scheduled to begin in September 1998 and be completed in June 1999. With
respect to the deregulation of the generation segment, anyone who obtains the
requisite permits and licenses may install and operate generation facilities.
The Pool was established for the bulk trading of electricity in England and
Wales between generators and suppliers. All generating plants with a capacity
of 100 MW or greater are required to sell their output to the Pool. Plants
with less than 100 MW capacity may sell their output to consumers, suppliers
or the Pool, which is required to purchase the output at the prevailing spot
market price. The deregulation of the transportation segment enabled suppliers
to transport electricity at regulated rates without discrimination over bulk
transmission lines operated by NGC and distribution lines operated by the
twelve RECs.
 
  The first two phases of deregulation of the supply segment of the U.K.
electricity industry enabled approximately 60,000 commercial and industrial
customers with aggregate annual electricity expenditures of approximately
(Pounds)7.0 billion to select their supplier. The Company specifically targets
consumers on the lower end of the (greater than) 100 kW consumer range, a
market segment which the Company estimates to include approximately 30,000
consumers with aggregate annual electricity expenditures of approximately
(Pounds)2.3 billion. The completion of the final phase of deregulation will
substantially increase the size of the market available to the Company as an
additional 1.9 million commercial consumers and 24.0 million domestic
(residential) consumers with aggregate annual electricity expenditures of
approximately (Pounds)11.0 billion will be able to choose their electricity
supplier. Within this market, the Company intends to selectively target
approximately 200,000 commercial consumers with peak demand usage of 20 kW to
100 kW and approximately 16.7 million domestic and commercial consumers with
peak demand usage of less than 20 kW. The Company estimates that these markets
have aggregate annual electricity expenditures of approximately (Pounds)7.4
billion.
 
BUSINESS STRATEGY
 
  The Company's objectives are to expand its revenue base and to increase its
operating margins. The Company is pursuing these objectives through a business
strategy comprised of the following elements:
 
  Expand Customer Base. The Company intends to continue to expand its customer
base through increased penetration of the currently deregulated (less than) 100
kW market and to enter into the (less than) 100 kW market upon the final phase
of deregulation expected to begin in September 1998. The Company believes it
can effectively compete in all of its targeted market segments on the basis of
price and quality of service. Within the commercial segment of the (less than)
100 kW consumer market, the Company believes it can leverage its relationships
with its existing
 
                                      29
<PAGE>
 
customer base to obtain a number of the smaller sites operated by its existing
customers in the (greater than) 100 kW consumer market. The Company intends to
penetrate the domestic (residential) segment of the (less than) 100 kW consumer
market by, among other things, capitalizing on the relationships and marketing
channels of selected strategic marketing partners to offer electricity services
as a jointly packaged range of products to an already well-established customer
base. The Company also intends to significantly increase its number of
commissioned sales agents and to enhance its direct mail and telemarketing
capabilities to further achieve its customer expansion goals. As a result of
its marketing efforts to date, the Company has signed contracts for an
additional 3,000 customers in the (less than) 100 kW consumer market which will
become effective pending deregulation.
 
  Install Additional Generating Capacity. By generating a portion of the
electricity that it supplies, the Company believes it can reduce its exposure
to fluctuating Pool prices and lower its cost of sales. The Company currently
operates three generating plants with a capacity of 18 MW and expects to have
a total of six generating plants with an aggregate capacity of 44 MW
operational by the end of 1998. The Company's objective is to install
additional generating facilities to provide it with approximately 10 MW to 20
MW of aggregate capacity in each of the twelve local distribution areas in
England and Wales. Management views the operation of its own generating plants
as an important part of its overall risk management strategy. Moreover, by
owning generating plants with less than 100 MW capacities and selling the
output directly to consumers within the local distribution system, the Company
obtains certain cost advantages, including avoidance of Pool expenses, NGC
transportation tariffs and transmission power losses.
 
  Leverage Management Expertise. Mr. Burt H. Keenan, the founder and Executive
Chairman of the Company, has built a management team with extensive experience
in the U.K. electricity and energy industry. Prior to joining the Company, Mr.
John L. Sulley, Managing Director of the Company, held senior management
positions with National Power where he established its electricity marketing
operations and managed the installation of small generating plants at customer
sites, and with Scottish Power where he was responsible for the financial,
strategic and business planning for supply and electricity trading operations.
In addition, other members of management have held senior positions with
Scottish Power, National Power, Scottish Hydro and Midlands Electricity.
 
  Maintain Prudent Risk Management Practices. The Company generally enters
into fixed price sales contracts with customers for a stated period, typically
one or two years. Most of the Company's supply of electricity is purchased
from the Pool at fluctuating spot market prices. In addition to generating a
portion of the electricity it sells, the Company has sought to reduce the
risks associated with fluctuating Pool prices by selectively targeting
customers with relatively predictable usage profiles and by entering into
hedging instruments known as CFDs. Management intends to enter into CFDs to
cover a significant portion of the customer contracts it enters into in the
future. By utilizing such risk management practices, management believes it
can balance its objective of profit maximization with acceptable levels of
risk.
 
  Expand Product Offerings. The Company believes that significant
opportunities exist to cost-effectively market additional energy products and
services to its electricity customer base. In particular, the U.K. natural gas
industry has been deregulated in a manner similar to that of the electricity
industry. The Company is currently exploring ways to market natural gas to its
customer base through strategic acquisitions, joint ventures and other
marketing affiliations.
 
THE U.K. ELECTRICITY MARKET
 
  The U.K. electricity market is comprised of approximately 1.9 million
commercial, industrial and public sector consumers and 24.0 million
residential consumers, with aggregate annual expenditures of approximately
(Pounds)18.0 billion ($30.2 billion). The supply segment of the U.K.
electricity industry is being deregulated in three phases. The first two
phases have been completed and enabled the largest 60,000 commercial consumers
to choose their electricity supplier. The third phase is scheduled to commence
in September 1998 and be completed by June 1999, at which time all consumers,
both commercial and domestic (residential) will be able to choose their
supplier.
 
                                      30
<PAGE>
 
  The following table sets forth a breakdown of the U.K. electricity market
for 1996 by consumer category and size, annual electricity volumes sold and
annual expenditures.
 
                            U.K. ELECTRICITY MARKET
 
<TABLE>
<CAPTION>
                                                         ANNUAL       ANNUAL
                                          NUMBER OF    ELECTRICITY EXPENDITURES
CONSUMER SIZE                             CONSUMERS    VOLUMES (IN  (POUNDS IN
(PEAK USAGE)                            (IN THOUSANDS)    TWH)      BILLIONS)
<S>                                     <C>            <C>         <C>
PHASE I AND PHASE II OF DEREGULATION
  (greater than)1 MW..................           6         36.0    (Pounds) 2.0
  100 kW-1 MW..........................         54         85.3             5.0
                                            ------        -----    ------------
    Subtotals..........................         60        121.3             7.0
                                            ------        -----    ------------
PHASE III OF DEREGULATION
  20-100 kW............................        803         32.7             2.5
  10-20 kW(1)..........................      2,137         26.0             1.5
  Domestic(2)..........................     23,000        100.0             7.0
                                            ------        -----    ------------
    Subtotals..........................     25,940        158.7            11.0
                                            ------        -----    ------------
    Totals.............................     26,000        280.0    (Pounds)18.0
                                            ======        =====    ============
</TABLE>
- -------------------------
Source: U.K. Office of Electricity Regulation, The Competitive Electricity
Market From 1998: Price Restraints September 1996
(1) Includes approximately 1.0 million residential consumers that are
    designated "non-domestic" consumers based on peak demand usage.
(2) Includes all remaining residential consumers.
 
                     INDEPENDENT ENERGY'S TARGET CUSTOMERS
 
  The following table sets forth the Company's targeted customers within the
U.K. electricity market and management's estimates with respect to such
targeted customers' annual electricity volumes and expenditures. Principal
factors which the Company seeks in its customers are predictable usage
patterns and volumes, above-average usage, strong credit ratings and payment
by direct debit.
 
<TABLE>
<CAPTION>
                                                          ANNUAL       ANNUAL
                                           NUMBER OF    ELECTRICITY EXPENDITURES
CONSUMER SIZE                              CONSUMERS    VOLUMES (IN  (POUNDS IN
(PEAK USAGE)                             (IN THOUSANDS)    TWH)      BILLIONS)
<S>                                      <C>            <C>         <C>
(greater than)100 kW....................         30         40.0    (Pounds)2.3
20-100 kW...............................        200          8.2            0.6
10-20 kW................................      1,700         21.0            1.2
Domestic................................     15,000         80.0            5.6
                                             ------        -----    -----------
  Totals................................     16,930        149.2    (Pounds)9.7
                                             ======        =====    ===========
</TABLE>
 
ELECTRICITY SUPPLY AND SALES
 
  The Company generally sells electricity at fixed prices pursuant to
contracts with a stated term, typically one or two years. Neither the Company
nor its customers may terminate such contracts during their term absent
extraordinary circumstances, such as the Company losing its supply license.
However, the Company may renegotiate the pricing terms of contracts if a
customer's demand and pattern usage changes significantly during the term of a
contract. The contracts also contain a provision that allows the Company to
pass through to customers increases in transportation and metering costs.
Although the vast majority of the Company's contracts are for fixed prices,
the Company does sell to certain customers that have unusual demand and
pattern usage based on prices that differ for volumes consumed during various
times of the day.
 
  The Company purchases a substantial majority of its electricity from the
Pool. In the nine months ended March 31, 1998, the Company purchased
approximately 97% of its electricity from the Pool. The other source of the
Company's electricity is its internal supply generated from Company-owned
generating plants. Electricity
 
                                      31
<PAGE>
 
from the Pool is purchased by the Company at spot market prices. Pool
electricity is priced in half-hour increments. Generally, Pool prices are
higher during the daytime than at night and are higher in winter months
compared to summer months. The Pool purchases electricity from generators at a
certain price and resells electricity at a higher price which includes a
margin to cover such costs as transmission losses and standby purchases of
electricity. Accordingly, the Company's internally generated electricity
provides a number of cost advantages to the Company in that the Company avoids
the Pool price as well as certain transportation costs and also generally
receives a higher margin on the electricity it generates internally. In
addition, the Company is credited by the Pool for supplying its electricity to
customers within a local distribution area and for reductions in power losses
on the local network.
 
  The Pool maintains a settlement system that monitors usage by all consumers.
Consumers in the (greater than) 100 kW market have meters that measure usage by
the half-hour. All other consumers meters are read monthly. Each (less than)
100 kW consumer has an assigned usage profile which estimates their usage
throughout each day over a month. The Pool requires all suppliers to pay,
including the Company, for all electricity consumed by their customers 28 days
in arrears. However, customers generally pay within 25 days on average. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Liquidity and Capital Resources."
 
  The Company has adopted a number of risk management practices to reduce the
risk of fluctuating electricity prices incurred in connection with its
customer contracts. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations--Risk Management Activities."
 
MARKETING AND CUSTOMERS
 
  The Company has established Independent Energy as a reliable alternative
provider of electricity in the U.K. market. The Company believes it can offer
such consumers better pricing and service than they currently receive from
their RECs or other suppliers. In a recent market survey, the Company was rated
the best overall electricity supplier in the U.K., based on price and service
criteria. The Company believes that the (less than) 100 kW commercial sector
and the domestic market represent a significant opportunity for it to expand
its revenue and customer base. As of May 31, 1998, the Company had entered into
contracts to supply an additional 3,000 customers pending the final phase of
deregulation. In addition, the Company believes that there remain additional
opportunities to expand its base of 1,400 customers within the 60,000-consumer
market that is currently deregulated.
 
  In order to take advantage of new market opportunities pending the final
phase of deregulation, the Company is currently exploring several new
marketing channels. Through strategic marketing, the Company believes it can
obtain as customers the smaller sites of some of its already existing 100 kW
customers. The Company intends to target customers with predictable usage
patterns and volumes.
 
  As part of its marketing strategy, the Company also seeks to capitalize on
the brand names of strategic marketing partners by offering electricity
services as part of a joint marketing program. The Company is currently
involved in discussions with a number of such potential strategic marketing
partners and expects to have a number of such arrangements in place prior to
the commencement of the final phase of deregulation in September 1998 that
management believes will give it access to up to 15.0 million domestic
consumers. In addition, the Company is targeting the employees and customers
of existing customers and marketing partners to further increase its domestic
customer base. Within the domestic market, the Company intends to target those
consumers that have above-average usage, strong credit ratings and pay by
direct debit. The Company utilizes available consumer databases and other
sources to target such customers.
 
  The Company currently utilizes the services of approximately 150 independent
commission-based sales agents employed by sales agencies that personally call
on prospective customers which have been identified by the Company based on
usage profiles and credit worthiness. The Company intends to continue to
increase its utilization of independent sales agents, and expects to engage an
aggregate of up to 1,000 independent agents to market its services by mid-
1999. The sales agencies used by the Company receive commissions calculated
based on the estimated sales volume for the customer over the life of the
contract. Fifty percent of such
 
                                      32
<PAGE>
 
commissions are paid upon the execution of the sales contract and the balance
are paid following the expiration of applicable sales contract. In addition to
independent sales agents, the Company also utilizes the services of
telemarketers who solicit prospective customers.
 
  To support these sales activities, the Company uses radio and newspaper
advertising and conducts press relations to create awareness for the
Independent Energy brand name and to educate consumers about the deregulated
electricity market. It also utilizes direct mail to target prospective
customers in advance of direct sales calls and telemarketing efforts.
 
ADMINISTRATIVE OPERATIONS
 
  The Company currently employs information systems and computerized links to
the Pool's settlement system. All of the Company's current customers have
meters which measure usage on a half-hourly basis. This information is
electronically communicated from the Pool's system to the Company each day.
The Company maintains its own billing system. Customers are billed monthly.
The Company also maintains its own call center to handle inquiries and other
communications with its customers.
 
  As the Company expands its operations and customer base commencing in
September 1998 with the final phase of deregulation, it will have to
substantially increase its ability to handle inquiries from customers, and
substantially upgrade its billing, payment collection and debt management
systems. In addition, the U.K. Office of Electricity Regulation ("OFFER") has
introduced separate Codes of Conduct and Codes of Practice to protect domestic
customers. These regulations are wide-ranging and include provisions governing
payment arrangements, debt collection and marketing practices. Operating in
this consumer market will require sophisticated systems that can manage,
control and transmit vast quantities of electronic data. It is also necessary
to ensure that the Company can provide these services in a cost-effective
manner. Accordingly, the Company has determined to outsource such functions for
customers in the (less than) 100 kW market segment, including handling customer
inquiries and other communications, billing, payment collection, debt
management and related operations. The Company has entered into an agreement in
principle with a third-party service provider in the U.K. to provide all of
such services as they relate to such customers, and expects to finalize a
definitive agreement with this provider prior to the commencement of the final
phase of deregulation in September 1998.
 
ELECTRICITY GENERATION
 
  As of May 31, 1998, the Company was operating three generating plants, a 1
MW plant at Elswick in Lancashire, an 8 MW plant at Trumfleet in Yorkshire and
a 9 MW plant at Caythorpe in Yorkshire. These plants generated approximately
3% of the Company's electricity requirements during the nine months ended
March 31, 1998. The Company anticipates that it will install three additional
plants by the end of 1998 with 26 MW of total capacity. The total capital
expenditure requirements for such plants are estimated to be (Pounds)15.2
million. The Company's strategy is to install between 10 MW and 20 MW of
generating plants in each of the twelve local distribution systems. The
Company's aggregate capital expenditure requirements for its planned
generating projects for 1998, together with the projects it intends to
complete in 1999, are estimated to be (Pounds)89.0 million. The Company
expects to fund up to 15% of such aggregate estimated capital expenditure
requirements ((Pounds)13.7 million) with a portion of the net proceeds from
the offering. See "Use of Proceeds" and "Management's Discussion and Analysis
of Financial Condition and Results of Operations--Liquidity and Capital
Resources."
 
  The Company's electricity generation plants are comprised predominately of
3,000 to 4,000 horsepower gas-fired internal combustion engines turning
generators. Electricity connections are made with the local grid network
providing a source of distribution to the Company's customers. The plants are
reasonably transportable and can be relocated at the time of economic
depletion of gas reserves at the generation site. In some cases, plants in the
proximity to the regional gas network can be operated utilizing purchased gas.
 
                                      33
<PAGE>
 
  The table below sets forth the Company's existing and certain proposed
generating facilities.
 
PROJECTS IN OPERATION
 
<TABLE>
<CAPTION>
                                                                      PROJECT
                                                                    COMMERCIAL
                                   FACILITY                          OPERATION
 PROJECT        FUEL SOURCE      NET CAPACITY       LOCATION           DATE
<S>         <C>                  <C>          <C>                  <C>
Elswick...  Company Gas Reserves     1 MW     Elswick, Lancashire    June 1996
Caythorpe.  Company Gas Reserves     9 MW     Caythorpe, Yorkshire December 1997
Trumfleet.  Company Gas Reserves     8 MW     Trumfleet, Yorkshire February 1998
</TABLE>
 
PLANNED PROJECTS
 
<TABLE>
<CAPTION>
                                                                             ESTIMATED
                                                  FACILITY                    PROJECT
                                                    NET                      COMMERCIAL        ESTIMATED
        PROJECT                FUEL SOURCE        CAPACITY    LOCATION     OPERATION DATE  INSTALLATION COST
<S>                      <C>                      <C>      <C>             <C>            <C>
Knypersley.............. Third-Party and Company    8 MW     Knypersley,    August 1998   (Pounds)5.2 million
                               Gas Reserves                 West Midlands
Holditch................     Third-Party Gas        9 MW      Holditch,     October 1998  (Pounds)5.0 million
                                                            West Midlands
Ironville............... Third-Party and Company    9 MW     Ironville,    December 1998  (Pounds)5.0 million
                               Gas Reserves                Nottinghamshire
</TABLE>
 
  Self-generation is an important component of the Company's overall strategy.
By owning generating plants, the Company is able to fix a portion of the cost
of its electricity needs, particularly during peak consumption periods when
Pool prices are at their highest. Further, the generating plants lower the
Company's cost of service. By owning generating plants with less than 100 MW
capacities and selling the output directly to consumers within the local
distribution system, the Company obtains certain cost advantages, including
avoidance of Pool expenses, NGC transportation tariffs and transmission power
losses. The Company is credited by the Pool for cost savings to the Pool for
supplying Company-generated electricity directly to its customers within local
distribution areas because such electricity does not enter the national grid
and for reductions in power losses on the local distribution networks
resulting from the Company's generation. This credit reduces the amounts
payable by the Company to the Pool. In most of its plants, the Company further
reduces its cost of service by either owning the gas reserves which fire the
plants or by obtaining access to gas which is not generally of a commercial
grade and is thus less expensive than gas purchased from the national gas
supply system.
 
NATURAL GAS RESERVES
 
 ESTIMATED PROVED RESERVES AND FUTURE NET CASH FLOWS
 
  As of April 1, 1998, the Company's net proved reserves of natural gas were
approximately 6.5 billion cubic feet ("Bcf"), of which 3.3 Bcf were proved
developed reserves and 3.2 Bcf were proved undeveloped reserves. Such
estimates were prepared by Gaffney, Cline & Associates Ltd., an independent
petroleum engineering firm. All of the Company's proved reserves are
attributable to its onshore properties in the U.K. The present value
(discounted at 10% per annum) of estimated future net cash flows from such
proved reserves as of April 1, 1998 was (Pounds)6.05 million ($10.2 million)
before applicable U.K. income taxes. The estimated proved reserves and future
net cash flows have been calculated in accordance with Commission definitions.
See "Glossary."
 
  There are numerous uncertainties inherent in estimating quantities of
reserves and in projecting future rates of production and timing of
development expenditures, including many factors beyond the control of the
producer. Reserve engineering is a subjective process of estimating
underground accumulations of oil and gas that cannot be measured in an exact
way, and the accuracy of any reserve estimate is a function of the quality of
available data and of engineering and geological interpretations and judgment.
As a result, estimates of different engineers often vary. In addition, results
of drilling, testing and production subsequent to the date of an estimate may
justify revision of such estimates. Accordingly, reserve estimates at a
specific time are often different from
 
                                      34
<PAGE>
 
the quantities of oil and gas that are ultimately recovered. Predictions about
future prices, costs and production levels of oil and gas are subject to great
uncertainty. The meaningfulness of such estimates is highly dependent upon the
accuracy of the assumptions upon which they are based.
 
  The preceding reserve value estimate sets forth estimated future net cash
flows from the production and sale of the Company's estimated proved reserves
and the present value thereof (discounted at 10% per annum). The estimated
future net cash flows are computed after giving effect to estimated future
development and production costs, based on year-end costs and assuming the
continuation of existing economic conditions. The calculation does not take
into account the effect of delay in commencement of production, various cash
outlays, including general and administrative costs and interest expense
(except for those interest charges associated with ongoing generation plant
lease costs) and U.K. income tax expense.
 
  The price used by Gaffney, Cline & Associates Ltd. to calculate the present
value of estimated future net cash flows from the Company's estimated net
proved reserves was based on the Pool price of electricity at April 1, 1998
after giving effect to the location of the Company's reserves and its
increased operating margins in generating its own electricity. As an example,
based on applicable Pool prices provided by the Company, the realized power
price for the Caythorpe project equates to an equivalent natural gas price of
(Pounds)3.28 per thousand cubic feet ("Mcf") ($5.51 per Mcf).
 
  In computing the present value of the estimated future net cash flows, a
discount rate of 10% per annum was used pursuant to Commission regulations to
reflect the timing of those net cash flows. Present value, regardless of the
discount rate used, is materially affected by assumptions about timing of
future production, which may prove to have been inaccurate. The reserve value
information represents an estimate only, which is subject to uncertainty for
numerous reasons.
 
 PETROLEUM LICENSES
 
  The Company currently holds 16 licenses in an aggregate 887,000 net acres
(net to the Company's interest) for the exploration and development of oil and
gas properties onshore U.K. All of the Company's licenses are located in the
U.K. Landward Areas. Fourteen of the Company's licenses are Petroleum
Exploration and Development Licenses ("PEDL") as defined in The Petroleum
(Production) (Landward Areas) Regulations 1995. PEDLs have an initial term of
eleven years; however, after the first six years there is a mandatory
relinquishment of 50% of the original license area. The Company determines the
acreage to be released. The license, for purposes of development and
production activities, continues for a further period of 20 years after the
initial eleven year term. Thereafter, a further period may be agreed to ensure
maximum recovery of petroleum. The licenses convey from the U.K. Government to
the licensee, the exclusive right to explore for, to appraise, to develop, and
to produce petroleum. Petroleum belongs to licensee when produced.
 
COMPETITION
 
  The Company is the largest independent supplier of electricity in the United
Kingdom (i.e., not a part of the government-owned electricity industry at the
time of its privatization in 1990). However, substantially all of the
Company's competitors consisting primarily of the twelve RECs, the Scottish
integrated companies, Scottish Power and Scottish Hydro, and the national
generators, National Power, PowerGen and British Energy, are better
established with longer operating histories and generally better access to
capital. The Company competes on the basis of service and price, and is
typically awarded contracts based on competitive bids. Competitors may be able
to undertake more extensive marketing campaigns, adopt more aggressive pricing
policies and devote substantially more resources to markets than the Company.
There can be no assurance that the Company will be able to compete
successfully against current or future competitors or that competitive
pressures faced by the Company will not materially adversely affect the
Company's business, operating results or financial condition. Further, as a
strategic response to changes in the competitive environment, the Company may
make certain pricing, service or marketing decisions or enter into
acquisitions or new ventures that could have a material adverse effect on the
Company's business, operating results or financial condition. See "Risk
Factors-- Competition."
 
                                      35
<PAGE>
 
ENVIRONMENTAL REGULATION
 
  The Company is subject to a number of environmental and health and safety
laws and regulations affecting many aspects of its present and future
operations including, without limitation, those regulating the planning,
designing, installation and operation of electricity generating plants and
those regulating gas exploration and production operations. Such laws and
regulations generally require the Company to obtain and comply with a wide
variety of licenses, permits and other approvals. Breaches of such laws or
regulations or the terms of related licenses, permits or approvals may result
in the imposition of criminal fines or penalties, any of which might be
material, or the cessation of operations. Environmental and health and safety
laws and regulations have become increasingly stringent and more strictly
enforced in recent years. There can be no assurance that existing
environmental or health and safety laws and regulations will not be revised or
that new laws and regulations will not be adopted or become applicable to the
Company which could have an adverse impact on its financial condition or
results of operations. The implementation of changes imposing more
comprehensive or stringent requirements on the Company could result in
increased compliance costs, and could, therefore, have a material adverse
effect on the Company's results of operations.
 
  To date, the costs of complying with environmental and health and safety
laws and regulations have not had a material adverse effect on the Company.
However, the Company is aware of some contamination as a result of the
activities of past owners or past uses of properties that it may in the future
acquire, occupy or use for the purposes of gas exploration and development
and/or electricity generation. Although the Company is not aware of any
current requirement to clean up such properties, there can be no assurance
that the Company as current owner, occupier or user of such properties will
not be liable for the cost of cleanup at such properties in the future and
that such costs will not have a material adverse effect on the Company's
financial condition or results of operations.
 
LITIGATION
 
  The Company is not a party to any material legal proceedings, nor is it
currently aware of any threatened material legal proceedings.
 
FACILITIES
 
  The Company maintains its headquarters in Solihull, West Midlands where it
leases 6,000 square feet of office space for approximately (Pounds)11,000 per
month. This lease expires in November 2002. The Company also leases 1,750
square feet of office space in Maidenhead for its resource offices which lease
expires in April 1999. Both of these leases may be extended at the Company's
option. For a description of the Company's generating plants, see "--
Electricity Generation."
 
EMPLOYEES
 
  As of May 31, 1998, the Company had 36 employees and consultants and
utilized the services of approximately 150 independent commission-based sales
agents. None of the Company's employees are represented by unions or subject
to collective bargaining agreements. The Company considers its relations with
its employees to be satisfactory.
 
                                      36
<PAGE>
 
           THE STRUCTURE OF THE UNITED KINGDOM ELECTRICITY INDUSTRY
 
INDUSTRY STRUCTURE AND BACKGROUND
 
  The electric industry in the United Kingdom consists of the following
elements:
 
  Generation: the production of electricity at power stations;
 
  Transmission: the bulk transfer of electricity across the high voltage
                transmission system;
 
  Distribution: the transfer of electricity from the high voltage
                transmission system and its delivery, across low voltage
                distribution systems, to consumers; and
 
  Supply:    the bulk purchase of electricity by suppliers and its sale to
             consumers.
 
  Great Britain has two separate but connected markets, each with a different
commercial framework. In England and Wales, electricity is produced by
generators, the largest of which are National Power, PowerGen plc ("PowerGen")
and British Energy plc ("British Energy"). Electricity is transmitted through
the national grid transmission system by NGC and distributed by the twelve
RECs in their respective authorized areas.
 
  In Scotland, there are two vertically integrated companies, Scottish Power
and Scottish Hydro, each generating, transmitting, distributing and supplying
electricity within its respective authorized areas as well as competing to
supply electricity elsewhere. Scottish Nuclear, a subsidiary of British
Energy, sells all the electricity it generates to Scottish Power and Scottish
Hydro by agreement.
 
  The interconnection between the two transmission systems, owned by Scottish
Power and NGC, is capable of transferring electricity between Scotland and
England and Wales. There is also an interconnection with France, owned by
Electricite de France and NGC, through which electricity can be transferred
between the transmission systems of France and England and Wales.
 
  Virtually all electricity generated in England and Wales is sold by
generators and bought by suppliers through the Pool. There is no equivalent to
the Pool in Scotland, but Scottish Power and Scottish Hydro are obligated by
their licenses to offer electricity for sale to second tier suppliers. They
are also required to provide access to their transmission and distribution
systems on a non-discriminatory basis to competing suppliers and generators.
The industry structure described above became effective April 1990. At the
same time, a licensing regime was introduced for the electricity industry both
in England and Wales and in Scotland. The Regulator (as described below) was
first appointed in 1989.
 
  The RECs, which at that time collectively owned The National Group Grid plc
("NGG"), NGC's holding company, were privatized in December 1990. National
Power and PowerGen were privatized in March 1991, Scottish Power and Scottish
Hydro were privatized in June 1991 and British Energy was privatized in July
1996. Since the summer of 1995, a majority of RECs have been acquired by other
companies.
 
DISTRIBUTION OF ELECTRICITY
 
  Each of the RECs is required to offer terms for connection to and/or use of
its distribution system to other persons. In providing use of its distribution
system, a REC must not discriminate between its own supply business and that
of any other authorized electricity operator, or between those of other
authorized electricity operators; nor may its charges differ except where
justified by differences in cost.
 
SUPPLY OF ELECTRICITY
 
  The Electricity Act deregulated the generation and marketing of electricity.
Generation of electricity was completely deregulated upon effectiveness of the
Electricity Act on April 1, 1990. Deregulation of supply is being phased in
commencing with >1 MW consumers on April 1, 1990 and on April 1, 1994 for >100
kW consumers. According to statistics provided by the OFFER, there are about
60,000 100 kW or greater peak demand customers in the U.K. Beginning in
September 1998 and continuing through June 1999, the remaining
 
                                      37
<PAGE>
 
1.9 million commercial and 24 million domestic customers in the U.K. will be
able to purchase electricity from any supplier with no price regulation other
than a "backstop" price for the domestic customer. The Company is licensed by
OFFER.
 
  Subject to minor exceptions, all electricity customers in the United Kingdom
must be supplied by a licensed supplier. Licensed suppliers purchase
electricity and make use of the transmission and distribution networks to
achieve delivery to customers' premises.
 
  There are two types of licensed suppliers: public electricity (or first
tier) suppliers ("PESs") and second tier suppliers. PESs are the RECs,
Scottish Power and Scottish Hydro, each supplying in its respective authorized
area. Second tier suppliers include the Company, National Power, PowerGen,
Nuclear Electric, Scottish Power, Scottish Hydro, other PESs supplying outside
their respective authorized areas and other independent suppliers.
 
THE POOL
 
  The Pool was established at the time of privatization for bulk trading of
electricity in England and Wales between generators and suppliers. The Pool
reflects two principal characteristics of the physical generation and supply
of electricity from a particular generator to a particular supplier. First, it
is not possible to trace electricity from a particular generator to a
particular supplier. Second, it is not practicable to store electricity in
significant quantities, creating the need for a constant matching of supply
and demand. Subject to exceptions for small generating plants such as the
Company's generating plants, all electricity generated in England and Wales
must be sold and purchased through the Pool. All licensed generators and
suppliers must become and remain signatories to the Pooling and Settlement
Agreement, which governs the constitution and operation of the Pool and the
calculation of payments due to and from generators and suppliers. The Pool
also provides centralized settlement of accounts and clearing. The Pool itself
does not buy or sell electricity.
 
  The Pool compiles and ranks in ascending order the half hourly electricity
volumes and prices bid by the generators. Based on this ranking, the Pool
purchases from the generators in ascending order the total half hour volume of
electricity needed to fulfill the Pool's forecasted demand for that period.
The price bid which corresponds to the cumulative volume which fulfills the
total estimated demanded by the Pool is the price which the Pool pays to all
generators. Through this marginal cost pricing system, the generators are
scheduled on or off according to their respective bids.
 
  A computerized system (the settlement system) is used to calculate prices
and to process metered, operational and other data and to carry out the other
procedures necessary to calculate the payments due under the Pool trading
arrangements. The settlement system is administered on a day-to-day basis by
Energy Settlements and Information Services, Limited, a subsidiary of NGC, as
settlement system administrator.
 
  The Pool is obligated to purchase all electricity generated by plants with
capacity of less than 100 MW, "small generators," at the Pool price, affording
the Company a source of sale for all its generated electricity. Alternatively,
"small generators" can bypass the Pool and sell direct to customers or other
suppliers. All suppliers purchase electricity from the Pool at the same half-
hour price.
 
  The mechanism for trading electricity is currently under review by the
Regulator. Accordingly, there can be no assurance that this mechanism will not
change. The Company is unable to predict the impact, if any, on its operations
as a result of any such change.
 
REGULATION UNDER THE ELECTRICITY ACT 1989
 
 THE REGULATOR
 
  The principal legislation governing the structure and regulation of the
electricity industry in the United Kingdom is the Electricity Act 1989 (the
"Electricity Act"). The Electricity Act established the industry structure
described above so as to enable privatization to take place. The Electricity
Act also created the institutional framework under which the industry is
currently regulated, including the office of the Regulator,
 
                                      38
<PAGE>
 
who is appointed by the United Kingdom Secretary of State for Trade and
Industry (the "U.K. Secretary of State"). The present Regulator, Professor
Stephen Littlechild, was appointed for a five-year term commencing September
1, 1989 and has since been reappointed for a further five-year term.
 
  The Regulator's functions under the Electricity Act include granting
licenses to generate, transmit or supply electricity (a function that he
exercises under a general authority from the U.K. Secretary of State);
proposing modifications to licenses; determining certain disputes between
electricity licensees and customers; and setting standards of performance for
electricity licensees.
 
  The Regulator exercises concurrently with the Director General of Fair
Trading certain functions relating to monopoly and merger situations under the
Fair Trading Act 1973 and certain functions relating to courses of conduct
which have, or are intended or likely to have, the effect of restricting,
distorting or preventing competition in the generation, transmission or supply
of electricity under the Competition Act 1980.
 
  The Electricity Act requires the Regulator and the U.K. Secretary of State
to exercise their functions in the manner each considers is best calculated to
ensure that all reasonable demands for electricity are satisfied; to ensure
that license holders are able to finance their licensed activities; and to
promote competition in the generation and supply of electricity. Subject to
these duties, the U.K. Secretary of State and the Regulator are required to
exercise their functions in the manner which each considers is best
calculated: to protect the interests of customers for electricity supplied by
licensed suppliers in respect of price, continuity of supply, and the quality
of electricity supply services; to promote efficiency and economy on the part
of licensed electricity suppliers and the efficient use of electricity
supplied to customers; to promote research and development by persons
authorized by license to generate, transmit or supply electricity, and to
secure the establishment of machinery for promoting the health and safety of
workers in the electricity industry. The U.K. Secretary of State and the
Regulator also have a duty to take into account the effect on the physical
environment of activities connected with the generation, transmission or
supply of electricity.
 
  In performing their duties to protect the interests of customers in respect
of prices and other terms of supply, the U.K. Secretary of State and the
Regulator have a duty to take into account in particular the interests of
customers in rural areas. In performing their duties to protect the interests
of customers in respect of the quality of electricity supply services, they
have a duty to take into account in particular the interests of those who are
disabled or of pensionable age.
 
 LICENSES
 
  Second Tier Supply Licenses. Other than a PES in its authorized area and
subject to certain other exceptions, a supplier of electricity to premises in
the United Kingdom must possess a second tier supply license. Subject to the
restrictions described in "--Supply of Electricity" above, second tier
licensees may compete for the supply of electricity with one another and with
the PES for the relevant area. Currently, there are approximately 39 second
tier supply license holders for England and Wales and approximately 25 second
tier supply license holders for Scotland.
 
  The Company has two supply licenses, one for England and Wales and one for
Scotland. The license for England and Wales was granted on March 7, 1996 and
the license for Scotland was granted on February 25, 1997. The term of each
license is 25 years.
 
  Generation Licenses. Electricity generators operating a generating plant
with capacity in excess of 10 MW in the United Kingdom are required to have a
generation license. The conditions attached to a generation license in England
and Wales require the holder, among other things, to comply with a grid code,
be a member of the Pool and submit relevant generating sets for central
dispatch. The conditions attached to generation licenses in Scotland require
the holder, among other things, to comply with a grid code. Failure to comply
with any of the generation license conditions may subject the licensee to a
variety of sanctions, including enforcement orders by the Regulator, or if an
enforcement order is not complied with, license revocation. Because none of
the Company's existing generating plants exceeds 10 MW, the Company's
generating plants are not required to be licensed.
 
                                      39
<PAGE>
 
                                  MANAGEMENT
 
EXECUTIVE OFFICERS AND DIRECTORS
 
  Certain information concerning the executive officers and directors of the
Company is set forth below.
 
<TABLE>
<CAPTION>
                       NAME                   AGE            POSITION
      <S>                                     <C> <C>
      Burt H. Keenan.........................  58 Executive Chairman
      John L. Sulley.........................  47 Managing Director
      Ian Stewart............................  46 Executive Director--Finance
      William E. Evans.......................  62 Executive Director--Resources
      Robert Jones...........................  52 Executive Director--Operations
      Jerry W. Jarrell.......................  56 Non-Executive Director
      Roy Deakin.............................  66 Non-Executive Director
      David May..............................  62 Non-Executive Director
</TABLE>
 
  BURT H. KEENAN has been Executive Chairman of the Company since its
inception in April 1991. Since 1987, he has been an associate of Chaffe &
Associates, Inc., an investment banking firm located in New Orleans,
Louisiana. From 1969 to 1986, Mr. Keenan was the founder, Chairman and Chief
Executive Officer of Offshore Logistics, Inc., a Nasdaq-traded marine and
aviation oil and gas service company. He is also a director of a number of
companies, including Telescan Incorporated, a Nasdaq-traded interactive online
information business, and Halter Marine, Inc., an American Stock Exchange
listed company engaged in shipbuilding in the U.S. Mr. Keenan holds bachelors
and masters degrees in business administration from Tulane University.
 
  JOHN L. SULLEY, Managing Director, joined the Company in October 1995. Mr.
Sulley has over 25 years of experience in the U.K. power industry, including
experience in engineering, operations, finance and marketing operations. From
April 1994 to October 1995, he was general commercial manager for the Supply
Division of Scottish Power plc, where he was responsible for financial
operations, strategic and business planning for the Supply Division and for
the electricity trading operations. From March 1989 to April 1994, Mr. Sulley
was responsible for starting and managing the direct sales operations at
National Power plc. Mr. Sulley holds an MBA from Glasgow University, a Masters
degree in engineering from UMIST and a BSc. in engineering from Aston
University.
 
  IAN STEWART joined the Company as Executive Director--Finance in May 1998.
From April 1996 to May 1998, Mr. Stewart served as Group Financial Controller
for the North of Scotland Water Authority. From January 1992 to March 1996, he
served as Head of Finance for the Energy Trading Division of Scottish Power
plc, which marketed electricity to large industrial and commercial businesses
in the early phases of deregulation in the U.K. During this same period, he
also served as Finance Director of Caledonian Gas, an affiliate of Scottish
Power plc. Mr. Stewart received his professional accountancy qualification
from Caledonian University.
 
  WILLIAM E. EVANS, Executive Director--Resources, joined the Company in April
1992. He is a consultant geologist-geophysicist with broad managerial
experience in exploration, having specialized in the U.K. onshore oil industry
over the past 25 years. He became chief geologist of the consulting firm
Seabrooke & Associates (later Simon Horizon) and a founder of Energy Resource
Consultants. He holds a BSc. in geology from Bristol University and a DIC in
oil technology from Imperial College, London, where he held a lectureship in
petroleum geology for three academic years.
 
  ROBERT JONES joined the Company in April 1996 and is currently Executive
Director--Operations. Dr. Jones is a petroleum engineer with 26 years of
experience in drilling, field development and production operations, with
particular emphasis on operations in the U.K. From September 1993 to April
1996, Dr. Jones was development manager for Perenco Group (formerly Kelt)
where he was responsible for drilling and completion operations and field
development. Before joining Perenco, Dr. Jones was operations manager for
Taylor Woodrow Energy Limited with specific responsibility for drilling and
production operations onshore U.K. Dr. Jones holds both a Ph.D. and a BSc. in
mining engineering from Nottingham University.
 
                                      40
<PAGE>
 
  JERRY W. JARRELL became a non-executive Director of the Company in May 1998.
From April 1991 to May 1998, he served as Executive Director--Finance of the
Company. He is also a private consultant to several public and private
companies. He has devoted 50% of his time to the Company since early 1996.
Prior thereto, he had devoted 20% of his time to the Company. From 1977 to
1990, he served as Chief Financial Officer for the Woodson Companies, an oil
field construction company. From 1971 to 1977, he was Secretary, Treasurer and
Controller of Offshore Logistics, Inc., a Nasdaq-traded marine and aviation
oil and gas service company. From 1966 to 1971, he was a certified public
accountant with Arthur Andersen & Company. He holds a BS degree in accounting
from Louisiana Tech University. Mr. Jarrell is the Chairman of the Audit
Committee and a member of the Remuneration Committee of the Board of
Directors.
 
  ROY DEAKIN has been a non-executive director of the Company since October
1992. He is Chairman of Southern Geophysical Consultants, a U.K. company which
has provided a geophysical service function to the petroleum exploration
industry over the past 25 years. Mr. Deakin was formerly a Non-Executive
Chairman of Blackland Oil plc. Mr. Deakin is a member of the Audit and
Remuneration Committees of the Board of Directors.
 
  DAVID MAY has been a non-executive director since December 1995. He is a
specialist in venture capital companies and currently holds seven other
directorships covering a wide range of business interests. He is currently
chairman of the Berthon group of companies which was a leader in marina
development in the U.K. He is a university graduate, a qualified marine
engineer and a naval architect. Mr. May is the Chairman of the Remuneration
Committee and a member of the Audit Committee of the Board of Directors.
 
TERM OF OFFICE OF DIRECTORS AND EXECUTIVE OFFICERS
 
  With the exception of the Chairman and Managing Director, one-third of the
Directors, or if their number is not three or any multiple of three, then the
number nearest to and less than one-third, retire by rotation at each Annual
General Meeting. In addition, any Director appointed since the latest Annual
General Meeting shall retire at the next Annual General Meeting but is
eligible for re-election. Accordingly, the terms of office expire at the next
Annual General meeting and, being eligible, such Directors may seek re-
election.
 
COMPENSATION OF DIRECTORS AND EXECUTIVE OFFICERS
 
  In the fiscal year ended June 30, 1997, the Company paid (Pounds)295,000 in
compensation to all directors and executive officers as a group, for services
in all capacities. The Company has a bonus and profit sharing plan. However,
no compensation was paid in fiscal 1997 under this plan. In fiscal 1997, the
Company accrued (Pounds)18,900 for pension, retirement or similar benefits for
its executive officers and directors. See Note 5 to the consolidated financial
statements of the Company included elsewhere in this Prospectus.
 
EMPLOYMENT CONTRACTS
 
  Independent Energy has entered into the following agreements with its
executive officers.
 
  Mr. Sulley and Dr. Jones have each entered into service agreements with
Independent Energy for an initial term of two years. After the initial term
which expired in May 1998, Independent Energy has the right to terminate
either agreement with 24 months prior notice. Mr. Sulley and Dr. Jones receive
annual salaries of (Pounds)66,000 and (Pounds)60,000, respectively, as well as
profit-related bonuses and other benefits.
 
  Each of Messrs. Evans, Keenan and Jarrell have entered into consulting
agreements through entities controlled by each such person with Independent
Energy for an initial term of two years. After the initial term, either party
to the agreements may terminate the applicable agreement with 24 months prior
notice. Messrs. Evans, Keenan and Jarrell receive annual salaries of
(Pounds)45,000, (Pounds)40,000 and (Pounds)25,000, respectively.
 
  Each of Messrs. Deakin and May have entered into agreements to provide their
services as non-executive directors to Independent Energy with Independent
Energy. Such contracts are terminable by either party with
 
                                      41
<PAGE>
 
three months notice. Each of Messrs. Deakin and May receive an annual fee of
(Pounds)8,000 and an attendance fee of (Pounds)650 per board meeting.
 
OPTIONS TO PURCHASE ORDINARY SHARES
 
  The following table sets forth the options to purchase Ordinary Shares held
by each executive officer and director as of May 31, 1998.
 
<TABLE>
<CAPTION>
                            NUMBER OF EXERCISE
           NAME              SHARES    PRICE   EXERCISABLE DATE EXPIRATION DATE
                                        (P)
<S>                         <C>       <C>      <C>              <C>
Burt H. Keenan.............    45,400   31.25  January 1, 1997  January 1, 2001
                              200,000  100.00  October 21, 1997 April 28, 2003
                               50,000  122.50  November 5, 2000 November 5, 2002
Jerry W. Jarrell...........    22,800   31.25  January 1, 1997  January 1, 2001
                              100,000  100.00  January 1, 1999  January 1, 2001
                               50,000  122.50  November 5, 2000 November 5, 2002
                              100,000  100.00  October 21, 1997 April 28, 2003
John L. Sulley.............    60,000   50.00  January 1, 1997  January 1, 2001
                              300,000  100.00  January 1, 1999  January 1, 2001
                               50,000  122.50  November 5, 2000 November 5, 2002
Ian Stewart................   170,000  122.50  November 5, 2000 November 5, 2002
William E. Evans...........   150,000  100.00  January 1, 1999  January 1, 2001
                              295,200    1.00  May 28, 1996     January 1, 2001
                               50,000  122.50  November 5, 2000 November 5, 2002
Robert Jones...............   300,000  100.00  January 1, 1999  January 1, 2001
                               50,000  122.50  November 5, 2000 November 5, 2002
Roy Deakin.................    50,000  100.00  January 1, 1997  January 1, 2001
David May..................    50,000  100.00  January 1, 1997  January 1, 2001
                               15,000  122.50  November 5, 2000 November 5, 2002
                            ---------
  Total.................... 2,108,400
                            =========
</TABLE>
 
                CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
  Mr. Evans, through Altwood Petroleum Limited ("Altwood"), a corporation
controlled by him, has a 4% carried interest in the Company's oil and gas
licenses (except for the Caythorpe license). Altwood acquired his 4% interest
as compensation for his agreement in April 1992 to the assignments of the
ongoing Elswick ventures and other forthcoming projects to Eukan, and for the
ownership of Eukan to be held 95% by IPSCO.
 
  In June 1997, Gonsoulin Enterprises, Inc. ("Gonsoulin"), which beneficially
owns 5.9% of the outstanding Shares, purchased (Pounds)625,000 of the
Company's 10% promissory notes due December 31, 2002. In connection with such
transaction, Gonsoulin received warrants to purchase 62,500 Shares at 75p per
Share. The Company intends to repay such notes, together with certain other
indebtedness, with the net proceeds of the offering. See "Use of Proceeds."
 
                                      42
<PAGE>
 
                            PRINCIPAL SHAREHOLDERS
 
  The following table sets forth certain information concerning beneficial
ownership of the Ordinary Shares as of May 31, 1998 by (i) each person (or
group within the meaning of Section 13(d)(3) of the Exchange Act) known by the
Company to own more than 5% of the outstanding Ordinary Shares, (ii) each
director of the Company, (iii) each executive officer and (iv) all directors
and executive officers of the Company as a group. Except as otherwise noted,
the named beneficial holder has sole voting and investment power.
 
<TABLE>
<CAPTION>
                                                         SHARES BENEFICIALLY
                                                              OWNED(1)
                                                     ---------------------------
                                                                 PERCENT OWNED
                                                               -----------------
                                                                BEFORE   AFTER
                                                      NUMBER   OFFERING OFFERING
      <S>                                            <C>       <C>      <C>
      Burt H. Keenan(2)............................  2,653,900   14.6%    10.1%
      Gonsoulin Enterprises, Inc.(3)...............  1,055,825    5.9%     4.1%
      John L. Sulley(4)............................    470,000    2.6%     1.8%
      Jerry W. Jarrell(5)..........................    410,100    2.3%     1.6%
      Ian Stewart(6)...............................    170,000      *        *
      William E. Evans(7)..........................    500,800    2.7%     1.9%
      Robert Jones(8)..............................    410,000    2.2%     1.6%
      Roy Deakin(9)................................    118,200      *        *
      David May(10)................................    115,000      *        *
      All officers and directors as a group (8 per-
       sons)(11)...................................  4,848,000   24.2%    17.3%
</TABLE>
- -------------------------
  * Less than 1%
 (1) As used in this table, "beneficial ownership" means the sole or shared
     power to vote, or to direct the voting of, a security, or the sole or
     shared investment power with respect to a security (i.e., the power to
     dispose of, or to direct the disposition of, a security) and includes the
     ownership of a security through corporate, partnership, or trust
     entities. In addition, for purposes of this table, a person is deemed, as
     of any date, to have "beneficial ownership" of any security that such
     person has the right to acquire within 60 days after such date.
 (2) Includes 295,400 shares issuable upon exercise of options held by Mr.
     Keenan. Mr. Keenan's address is Dominion Court, 43 Station Road,
     Solihull, West Midlands, United Kingdom B91 3RT.
 (3) The address of this shareholder is 3417 West Admiral Doyle, New Iberia,
     Louisiana 70560.
 (4) Includes 410,000 shares issuable upon exercise of options held by Mr.
     Sulley.
 (5) Includes 272,800 shares issuable upon exercise of options held by Mr.
     Jarrell.
 (6) Includes 170,000 shares issuable upon exercise of options held by Mr.
     Stewart.
 (7) Includes 495,200 shares issuable upon exercise of options held by Mr.
     Evans.
 (8) Includes 350,000 shares issuable upon exercise of options held by Dr.
     Jones.
 (9) Includes 50,000 shares issuable upon exercise of options held by Mr.
     Deakin.
(10) Includes 65,000 shares issuable upon exercise of options held by Mr. May.
(11) Includes 2,108,400 shares issuable upon exercise of options held by the
     named executive officers and directors.
 
                                      43
<PAGE>
 
                         DESCRIPTION OF SHARE CAPITAL
 
  The following contains certain information concerning Independent Energy's
capital structure and related summary information concerning certain
provisions of Independent Energy's Memorandum and Articles of Association
(Charter) and applicable English law. Such summary information is not complete
and is qualified in its entirety by reference to the Memorandum and Articles
of Association of Independent Energy, a copy of which have been filed as an
exhibit to the Registration Statement of which this Prospectus is part and
which is available for inspection as part of that Registration Statement.
 
GENERAL
 
  The Company's authorized share capital is (Pounds)280,000 divided into
28,000,000 Ordinary Shares of 1p nominal value each, of which 17,935,527
Ordinary Shares were issued and outstanding as of May 31, 1998. The Company
has convened an extraordinary general meeting to be held on July 2, 1998 at
which resolutions will be proposed to increase the authorized capital to
50,000,000 Ordinary Shares and waive certain preemptive rights. The
consummation of the offering is contingent upon the approval by the
shareholders of such resolutions.
 
  The share capital of the Company may be increased, consolidated and divided
into shares of larger amounts than the Ordinary Shares, sub-divided into
shares of smaller amount than the Ordinary Shares, and unissued Ordinary
Shares may be canceled by an ordinary resolution of shareholders in a general
meeting of the Company. The share capital of the Company may be reduced by
special resolution of shareholders in a general meeting of the Company and
confirmation by the English courts. The Company may, with the prior approval
of an ordinary resolution of shareholders at a general meeting, purchase its
own shares.
 
DESCRIPTION OF ORDINARY SHARES
 
  All of the issued and outstanding Ordinary Shares are duly authorized,
validly issued and fully paid.
 
 DIVIDEND RIGHTS
 
  Holders of Ordinary Shares are entitled to receive such dividends as may be
recommended by the Board of Directors of the Company and declared by the
Company in a general meeting (but no larger dividend may be declared than is
recommended by the Board of Directors of the Company, and the Company, in a
general meeting may declare a smaller dividend) and such interim dividends as
the Board of Directors of the Company may decide.
 
  The Company or the Board of Directors may fix a date as the record date by
reference to which a dividend on the Ordinary Shares will be declared or paid,
whether or not it is before the date on which the declaration is made. Any
dividend on the Ordinary Shares unclaimed for a period of 12 years from its
date of payment shall be forfeited and shall revert to the Company. No
dividend on an Ordinary Share will bear interest.
 
 RIGHTS IN LIQUIDATION
 
  Subject to the rights attached to any shares issued on special terms and
conditions, upon any liquidation or winding up of the Company, after all debts
and liabilities of the Company and the expenses of the liquidation have been
discharged, any surplus assets will be divided among the holders of Ordinary
Shares in proportion to their holdings after deducting any amounts remaining
unpaid in respect of such shares.
 
 NOTIFICATION OF INTEREST IN SHARES
 
  Section 198 of the Companies Act of 1985 obliges any person (subject to
exception) who acquires an interest of 3% or more in the Ordinary Shares to
notify the Company of his interest within two business days following the day
on which the obligation to notify arises. After the 3% level is exceeded,
similar notification must be made in respect of whole percentage figure
increases or decreases, rounded down to the next whole number. For the
purposes of the notification obligation, the interest of a person in the
shares means any kind of interest in shares (subject to certain exceptions)
including any shares (i) in which his spouse or his child or stepchild, is
interested, (ii) in which a corporate body is interested where either (a) that
corporate body or its
 
                                      44
<PAGE>
 
directors are accustomed to act in accordance with that person's directions or
instructions, or (b) that person controls one third or more of the voting
power of that corporation body, (or (iii) in which another party is interested
where the person and that other party are parties to a "concert party"
agreement under Section 204 of the Companies Act 1985 and any interest in
Shares is in fact acquired by any one of the parties pursuant to the
agreement. A "concert party" agreement is an agreement which provides for one
or more parties to it to acquire interests in shares of a particular company
and imposes obligations or restrictions on any one or more of the parties as
to the use, retention or disposal of such interests.
 
  In addition, Section 212 of the Companies Act 1985 enables the Company, by
notice in writing, to require a person whom the Company knows or has
reasonable cause to believe to be, or to have been at any time during the
three years immediately preceding the date on which the notice is issued,
interest in shares to confirm that fact or (as the case may be) to indicate
whether or not that is the case, and where he holds or has during this
relevant time held an interest in the Shares, to give such further information
as may be required relating to his interest and any other interest in the
shares of which he is aware.
 
  In addition to the restrictions on the rights attaching to shares imposed by
the Companies Act 1985 for noncompliance with Section 212 of that act, the
Company's Memorandum and Articles of Association apply additional
restrictions. The restrictions imposed or applied can potentially include
disenfranchisement, loss of entitlement to dividends and other payments and
restrictions on alienability.
 
 VOTING RIGHTS AND SHAREHOLDERS MEETINGS
 
  Under English law, there are two types of general meeting of shareholders,
annual general meetings and extraordinary general meetings. An annual general
meeting must be held at least once in each calendar year and not later than 15
months from the previous annual general meeting. At the annual general meeting
matters such as the election of directors, appointment of auditors and the
fixing of their remuneration, approval of the annual accounts and the
directors' report and declaration of dividends are dealt with. Any other
general meeting is known as an extraordinary general meeting.
 
  The Directors may convene an extraordinary general meeting and must convene
one if demanded by holders of not less than 10% of the paid-up shares. An
annual general meeting and an extraordinary general meeting called to pass a
special resolution must be called by at least 21 clear days' notice specifying
the place, day and time of the meeting and the general nature of the business
to be transacted. No business may be transacted at any general meeting unless
a quorum of two persons entitled to vote on the business to be transacted is
present in person or by proxy.
 
  At a general meeting, a simple majority of the votes cast is sufficient to
pass an ordinary resolution. A special resolution requires a majority of not
less than 75% of the votes of those shareholders as (being entitled to do so)
vote in person or by proxy on the resolution in question. A small number of
matters relating to variation of the rights attaching to different classes of
shares and proceedings in a winding-up require the authority of an
extraordinary resolution, which requires the same majority as a special
resolution.
 
  Subject to the restrictions referred to in the following paragraph, at a
meeting of shareholders every holder of shares who (being an individual) is
present in person or (being a corporation) is present by a representative or
proxy not being himself a member shall have one vote on a show of hands, and
on a poll (which can be demanded by the Chairman of the meeting, not less than
three shareholders present in person or by proxy having the right to vote at
the meeting, a holder or holders of Shares or his or their proxy representing
not less than 10% of the total voting rights of all shareholders having the
right to attend and vote at the meeting or by a holder or holders of shares or
his or their proxy conferring a right to attend and vote at the meeting on
which an aggregate sum has been paid up equal to not less than one tenth of
the total sum paid up on all shares conferring that right), every holder of
Shares present in person or by proxy shall have one vote for every share held.
 
                                      45
<PAGE>
 
  A holder of shares shall not be entitled (save as a proxy for another
member) to be present or vote at any general meeting:
 
    (a) in respect of any Shares held by him in relation to which he or any
  other person appearing to be interested in those Shares has been served
  with a notice under Section 212 of the Companies Act 1985, requiring him to
  provide information in accordance with that section and containing a
  statement that upon failure to supply such information before the
  expiration period specified in the notice (which may not be less than 28
  days) the registered holder of the Share is not entitled to vote in respect
  of those Shares, and the person on whom such notice was served fails to
  supply the information within the specified period; or
 
    (b) unless all amounts presently payable by him in respect of such Shares
  have been paid.
 
  All or any of the rights or privileges attached to the shares may, subject
to certain provisions of the Companies Act 1985, be varied either with the
consent in writing of the holders of 75% in nominal value of the issued shares
or with the sanction of an extraordinary resolution passed at a separate
meeting of the holders of shares, but not otherwise.
 
 TRANSFER OF SHARES
 
  The instrument of transfer of a share may be in any usual form or in any
other form of which the Directors approve and shall be executed by or on
behalf of the transferor and, unless the share is fully paid, by or on behalf
of the transferee. The Directors may, in their absolute discretion without
giving any reason therefor, refuse to register the transfer of a share which
is not fully paid provided that any such refusal will not prevent dealings in
the shares from taking place on an open and proper basis. The Directors may
decline to register a transfer to person known to be a minor, bankrupt or
person who is mentally disordered at a patient for the purpose of any statute
relating to mental health. Subject thereto, the Articles of Association
contain no restrictions on the registration of transfers of fully paid shares
provided that all stamp duty payable thereon has been paid and the transfers
are accompanied by any certificate for the shares and such other evidence (if
any) as the Directors may require to prove the title of the intending
transferor or his right to transfer the shares and is the case of a transfer
to joint holders, and to no more than four such joint holders. The register of
members may be closed at such times and for such periods as the Directors may
determine not exceeding thirty days in each year. The Company has resolved
that title to any Shares may be transferred by means of CREST being a relevant
system for the purposes of the Uncertified Securities Regulations 1995.
 
 ISSUE OF ADDITIONAL SHARES
 
  Subject to the provisions of the Companies Act 1985, the authorized but
unissued shares are at the disposal of the Directors who may issue, grant
options over or otherwise dispose of them to such persons an on such terms as
they deem appropriate.
 
  By virtue of Section 80 of the Companies Act 1985, the Directors may not,
subject to limited exceptions in respect of employee share schemes, exercise
any power to issue shares (or grant any right to subscribe for or convert
other securities into shares) unless they have been authorized to do so by an
ordinary resolution. Any such authority must state the maximum amount of
shares which may be issued under it and the date of which it will expire,
which must not be more than five years from the date the resolution is passed.
On October 21, 1997, an ordinary resolution was passed authorizing the
Directors pursuant to Section 80 of the Companies Act 1985 to exercise all the
powers of the Company to issue shares up to a nominal amount of
(Pounds)136,086, being the whole of the authorized but unissued share capital,
for its period of five years.
 
  If Shares are to be issued for cash, Section 89 of the Companies Act 1985,
requires, subject to limited exceptions in respect of employee share schemes,
such shares first be offered to existing holders of shares in proportion to
their holdings. However, Section 95 of the Companies Act 1985 provides that in
certain circumstances the directors of a company may by special resolution be
given power to issue shares as if Section 89 did not apply. On October 21,
1997, a special resolution was passed disapplying the provisions of Section 89
 
                                      46
<PAGE>
 
in respect of the issue of shares in connection with a rights issue and
otherwise in respect of the issue of shares up to an aggregate nominal amount
of (Pounds)65,000, such authority to expire at the conclusion of the next
annual general meeting of the Company or if earlier, fifteen months from the
passing of that resolution.
 
  The Company has convened an extraordinary general meeting to be held on July
2, 1998 at which resolutions will be proposed to increase the authorized
capital to 50,000,000 Shares in order to consummate the offering and waive
certain preemptive rights.
 
 REGISTRAR AND TRANSFER AGENT
 
  The registrar and transfer agent for the Ordinary Shares is Lloyds Bank
Registrars, The Causeway, Worthing, West Sussex BN99 6DA England, United
Kingdom.
 
  There are no restrictions under the Company's Memorandum and Articles of
Association or under English Law that limit the rights of persons not resident
in the United Kingdom, as such, to hold or to vote shares.
 
                                      47
<PAGE>
 
                  DESCRIPTION OF AMERICAN DEPOSITARY RECEIPTS
 
  The following is a summary of the material provisions of the Deposit
Agreement (including any exhibits thereto, the "Deposit Agreement") among the
Company, the Depositary and all persons in whose name an ADR is registered on
the books of the Depositary (the "Owners") and any person owning any
beneficial interest in the ADSs evidenced by any ADR, and who may or may not
be the Owner of such ADR (the "Beneficial Owners") from time to time of the
ADRs issued thereunder. A copy of the Deposit agreement has been filed as an
exhibit to the Registration Statement of which this Prospectus is part and
which is available for inspection as part of that Registration Statement. In
addition, copies of the Deposit agreement are available for inspection at the
principal office of the Depositary in New York (the "Principal New York
Office"), which is presently located at 101 Barclay Street, New York, New York
10286. Terms used herein and not otherwise defined shall have the respective
meanings set forth in the Deposit Agreement.
 
  ADRs evidencing ADSs are issuable by the Depositary pursuant to the terms of
the Deposit Agreement. Each ADS represents, as of the date hereof, the right
to receive one Share deposited under the Deposit Agreement (together with any
additional Shares deposited thereunder and all other securities, property and
cash received and held thereunder at any time in respect of or in lieu of such
deposited Shares, the "Deposited Securities") with the Custodian, currently
the London office of The Bank of New York (together with any successor or
successors thereto, the "Custodian"). An ADR may evidence any number of ADSs.
Only persons in whose names ADRs are registered on the books of the Depositary
will be treated by the Depositary and the Company as Owners.
 
 DEPOSIT, TRANSFER AND WITHDRAWAL
 
  In connection with the deposit of Shares under the Deposit Agreement, the
Depositary or the Custodian may require the following in form satisfactory to
it: (i) a written order directing the Depositary to execute and deliver to, or
upon the written order of, the person or persons designated in such order an
ADR or ADRs evidencing the number of ADSs representing such deposited Shares
(a "Delivery Order"); (ii) proper endorsements or duly executed instruments of
transfer in respect of such deposited Shares; (iii) instruments assigning to
the Custodian or its nominee any distribution on or in respect of such
deposited Shares or indemnity therefor; and, (iv) proxies entitling the
Custodian to vote such deposited Shares until the shares are registered in the
name of the Custodian or its nominee. As soon as practicable after the
Custodian receives Deposited Securities pursuant to any such deposit or
pursuant to the form of ADR, the Custodian shall present such Deposited
Securities for registration of transfer into the name of the Depositary or its
nominee or the Custodian or its nominee, to the extent such registration is
practicable, at the cost and expense of the person making such deposit (or for
whose benefit such deposit is made) and shall obtain evidence satisfactory to
it of such registration. Deposited Securities shall be held by the Custodian
for the account and to the order of the Depositary at such place or places and
in such manner as the Depositary shall determine. Deposited Securities may be
delivered by the Custodian to any person only under the circumstances
expressly contemplated in the Deposit Agreement.
 
  After any such deposit of Shares, the Custodian shall notify the Depositary
of such deposit and of the information contained in any related Delivery Order
by letter, first class airmail postage prepaid, or, at the request, risk and
expense of the person making the deposit, by cable, telex or facsimile
transmission. After receiving such notice from the Custodian, the Depositary,
subject to the terms and conditions of the Deposit Agreement, shall execute
and deliver at the Transfer Office which is presently located at the Principal
New York Office, to or upon the order of any person named in such notice, an
ADR or ADRs registered as requested and evidencing the aggregate ADSs to which
such person is entitled.
 
  Subject to the terms and conditions of the Deposit Agreement, the Depositary
may so issue ADRs for delivery at the Transfer Office only against deposit
with the Custodian of (i) Shares in form satisfactory to the Custodian; (ii)
rights to receive Shares from the Company or any registrar, transfer agent,
clearing agent or other entity recording Share ownership or transactions: or,
(iii) other rights to receive Shares (until such Shares are
 
                                      48
<PAGE>
 
actually deposited pursuant to (i) or (ii) above, "Pre-released ADRs") only if
(a) Pre-released ADRs are fully collateralized (marked to market daily) with
cash or U.S. government securities held by the Depositary for the benefit of
Owners (but such collateral shall not constitute "Deposited Securities"), (b)
each recipient of Pre-released ADRs agrees in writing with the Depositary that
such recipient (1) owns such Shares, (2) assigns all beneficial right, title
and interest therein to the Depositary, (3) holds such Shares for the account
of the Depositary and (4) will deliver such Shares to the Custodian as soon as
practicable and promptly upon demand therefor and (c) all Pre-released ADRs
evidence not more than 30% of all such ADSs. The Depositary may retain for its
own account any earnings or collateral for Pre-released ADRs and its charges
for issuance thereof. At the request, risk and expense of the person
depositing Shares, the Depositary may accept deposits together with other
specified instruments for forwarding to the Custodian and may deliver ADRs at
a place other than its office. Every person depositing Shares under the
Deposit Agreement represents and warrants that such Shares are validly issued
and outstanding, fully paid, nonassessable and free of preemptive rights, that
the person making such deposit is duly authorized so to do and that such
Shares are not "restricted securities" as such term is defined in Rule 144
under the Securities Act. Such representations and warranties shall survive
the deposit of Shares and issuance of ADRs.
 
  Subject to the terms and conditions of the Deposit Agreement, upon surrender
of an ADR in form satisfactory to the Depositary at the Transfer Office, the
Owner thereof is entitled to delivery at the Custodian's office of the
Deposited Securities at the time represented by the ADSs evidenced by such ADR
at the request, risk and expense of the Owner thereof, the Depositary may
deliver such Deposited Securities at such other place as may have been
requested by the Owner.
 
 DISTRIBUTIONS ON DEPOSITED SECURITIES
 
  Subject to the terms and conditions of the Deposit Agreement, to the extent
practicable, the Depositary will distribute by mail to each Owner entitled
thereto on the record date set by the Depositary therefor at such Owner's
address shown on the ADR Register, in proportion to the number of Deposited
Securities (on which the following distributions on Deposited Securities are
received by the Custodian) represented by ADSs evidenced by such Owner's ADRs:
 
  Cash. Any dollars available to the Depositary resulting from a cash dividend
or other cash Distribution or the net proceeds of sales of any other
distribution or portion thereof authorized in the Deposit Agreement ("Cash"),
on an averaged or other practicable basis, subject to (i) appropriate
adjustments for taxes withheld and (ii) deduction of the Depositary's expenses
in (1) converting any foreign currency to dollars by sale or in such other
manner as the Depositary may determine to the extent that it determines that
such conversion may be made on a reasonable basis, (2) transferring foreign
currency or dollars to the U.S. by such means as the Depositary may determine
to the extent that it determines that such transfer may be made on a
reasonable basis, (3) obtaining any approval or license of any governmental
authority required for such conversion or transfer, which is obtainable at a
reasonable cost and within a reasonable time and (4) making any sale by public
or private means in any commercially reasonable manner;
 
  Shares. (i) Additional ADRs evidencing whole ADSs representing any Shares
available to the Depositary resulting from a dividend or free distribution on
Deposited Securities consisting of Shares (a "Share Distribution") and (ii)
dollars available to it resulting from the net proceeds of sales of Shares
received in a Share Distribution, which Shares would give rise to fractional
ADSs if additional ADRs were issued therefor, as in the case of Cash;
 
  Rights. (i) Warrants or other instruments in the discretion of the
Depositary representing rights to acquire additional ADRs in respect of any
rights to subscribe for additional Shares or rights of any nature available to
the Depositary as a result of a distribution on Deposited Securities
("Rights"), to the extent that the Company timely furnishes to the Depositary
evidence satisfactory to the Depositary that the Depositary may lawfully
distribute same (the Company has no obligation to so furnish such evidence),
or (ii) to the extent the Company does not so furnish such evidence and sales
of Rights are practicable any dollars available to the Depositary
 
                                      49
<PAGE>
 
from the net proceeds of sales of Rights as in the case of Cash, or (iii) to
the extent the Company does not so furnish such evidence and such sales cannot
practicably be accomplished by reason of the nontransferability of the Rights,
limited markets therefor, their short duration or otherwise, nothing (and any
Rights may lapse); and
 
  Other Distributions. (i) Securities or property available to the Depositary
resulting from any distribution on Deposited Securities other than Cash, Share
Distributions and Rights ("Other Distributions"), by any means that the
Depositary may deem equitable and practicable, or (ii) to the extent the
Depositary deems distribution of such securities or property not to be
equitable and practicable, any dollars available to the Depositary from the
net proceeds of sales of Other Distributions as in the case of Cash.
 
  Such dollars available will be distributed by checks drawn on a bank in the
U.S. for whole dollars and round fractional amounts to the nearest whole cent
(any fractional cents being withheld without liability for interest and added
to future Cash distributions).
 
  To the extent that the Depositary determines in its discretion that any
distribution is not practicable with respect to any Owner, the Depositary may
make such distribution as it so determines is practicable, including the
distribution of foreign currency, securities or property (or appropriate
documents evidencing the right to receive foreign currency, securities or
property) or the retention thereof as Deposited Securities with respect to
such Owner's ADRs (without liability for interest thereon or the investment
thereof).
 
  There can be no assurance that the Depositary will be able to effect any
currency conversion or to sell or otherwise dispose of any distributed or
offered property, subscription or other rights, Shares or other securities in
a timely manner or at a specified rate or price, as the case may be.
 
 DISCLOSURE OF INTERESTS
 
  To the extent that the provisions of or governing any Disposed Securities
may require disclosure of or impose limits on beneficial or other ownership of
Deposited Securities, other Shares and other securities and may provide for
blocking transfer, voting or other rights to enforce such disclosure or
limits, Owners and all persons holding ADRs agree to comply with all such
disclosure requirements and ownership limitations and to cooperate with the
Depositary in the Depositary's compliance with any Company instructions in
respect thereof, and, in the Deposit Agreement, the Depositary has agreed to
use reasonable efforts to comply with such Company instructions.
 
  Notwithstanding any provision of the Deposit Agreement, by being a Owner of
an ADR, each such Owner agrees to provide such information as the Company may
request in a disclosure notice (a "Disclosure Notice") given pursuant to the
United Kingdom Companies Act 1985 (as amended from time to time and including
any statutory modification or reenactment thereof, the "Companies Act") or the
Articles of Association of the Company. In the Deposit Agreement each Owner
acknowledges that it understands that failure to comply with a Disclosure
Notice may result in the imposition of sanctions against the Owner of the
Shares in respect of which the non-complying person is or was, or appears to
be or has been, interested as provided in the Companies Act and the Articles
of association which currently include, the withdrawal of the voting rights of
such Shares and the imposition of restrictions on the rights to receive
dividends on and to transfer such Shares. In addition, in the Deposit
Agreement each Owner agrees to comply with the provisions of the Companies Act
with regard to the notification to the Company of interests in Shares, which
currently provide, inter alia, that any Owner who is or becomes directly or
indirectly interested (within the meaning of the Companies Act) in 3% or more
of the outstanding Shares, or is aware that another person for whom is holds
such ADRs is so interested, must within two business days after becoming so
interested or so aware (and thereafter in certain circumstances upon any
change to the particulars previously notified) notify the Company as required
by the Companies Act.
 
 RECORD DATES
 
  The Depositary may fix a record date which shall be as near as practicable
to any corresponding record date set by the Company for the determination of
the Owners who shall be entitled to receive any distribution on or in respect
of Deposited Securities, to give instructions for the exercise of any voting
rights, to receive any notice or to act in respect of other matters and only
such Owners shall be so entitled.
 
                                      50
<PAGE>
 
 VOTING OF DEPOSITED SECURITIES
 
  As soon as practicable after receipt from the Company of notice of any
meeting or solicitation of consents or proxies of Owners of Shares or other
Deposited Securities, the Depositary shall mail to Owners a notice stating (i)
such information as is contained in such notice and any solicitation
materials, (ii) that each Owner on the record date set by the Depositary
therefor will be entitled to instruct the Depositary as to the exercise of the
voting rights, if any, pertaining to the Deposited Securities represented by
the ADSs evidenced by such Owner's ADRs and (iii) the manner in which such
instruction may be given, including instructions to give a discretionary proxy
to a person designated by the Company. Upon receipt of instructions of a Owner
on such record date in the manner and on or before the date established by the
Depositary for such purpose, the Depositary shall endeavor insofar as
practicable and permitted under the provisions of or governing Deposited
Securities to vote or cause to be voted (or to grant a discretionary proxy to
a person designated by the Company to vote in accordance with (iii) above) the
Deposited Securities represented by the ADSs evidenced by such Owner's ADRs in
accordance with such instructions. The Depository will not itself exercise any
voting discretion in respect of any Deposited Securities.
 
 INSPECTION OF TRANSFER BOOKS
 
  The Deposit Agreement provides that the Depositary will keep books at its
Transfer Office for the registration, registration of transfer, combination
and split-up of ADRs, which at all reasonable times will be open for
inspection by the Owners and the Company for the purpose of communication with
Owners in the interest of the business of the Company or a matter related to
the Deposit Agreement.
 
 REPORTS AND OTHER COMMUNICATIONS
 
  The Depositary shall make available for inspection by Owners at the Transfer
Office reports and communications received from the Company which are both (i)
received by the Depositary as the Holder of the Deposited Securities and (ii)
made generally available to the holders of such Deposited Securities by the
Company. The Depositary shall also send to the Owners copies of such reports
when furnished by the Company. Any such reports and communications furnished
to the Depositary by the Company shall be furnished in English.
 
  On or before the first date on which the Company makes any communication
available to holders of Deposited Securities or any securities regulatory
authority or stock exchange, by publication or otherwise, the Company shall
transmit to the Depositary and the Custodian a copy of the notice thereof (in
English) in the form given or to be given to holders of Shares or other
Deposited Securities. The Depositary will, at the Company's expense, arrange
for the prompt mailing of copies thereof to all Owners. In connection with any
registration statement under the Securities Act relating to the ADRs or with
any undertaking contained therein, the Company and the Depositary shall each
furnish to the other and to the Commission or any successor governmental
agency such information as shall be required to make such filings or comply
with such undertakings. The Company has delivered to the Depositary, the
Custodian and any Transfer Office, a copy of all provisions of or governing
the Shares and any other Deposited Securities issued by the Company or any
affiliate of the Company and, promptly upon any change thereto, the Company
shall deliver to the Depositary, the Custodian and any Transfer Office, copy
of such provisions as so changed. The Depositary and its agents may rely upon
the Company's delivery thereof for all purposes of the Deposit Agreement.
 
 CHANGES AFFECTING DEPOSITED SECURITIES
 
  Subject to the terms and conditions of the Deposit Agreement, the Depositary
may, in its discretion, amend the form of ADR or distribute additional or
amended ADRs (with or without calling the ADRs for exchange) or cash,
securities or property on the record date set by the Depositary therefor to
reflect any change in par value, split-up, consolidation, cancellation or
other reclassification of Deposited Securities, any Share Distribution or
Other Distribution not distributed to Owners or any cash, securities or
property available to the Depositary in respect of Deposited Securities from
(and, in the Deposit Agreement, the Depositary is authorized to surrender
 
                                      51
<PAGE>
 
any Deposited Securities to any person and to sell by public or private sale
any property received in connect on with) any recapitalization,
reorganization, merger, consolidation, liquidation, receivership, bankruptcy
or sale of all or substantially all the assets of the Company, and to the
extent the Depositary does not so amend the ADR or make a distribution to
Owners to reflect any of the foregoing, or the net proceeds thereof, whatever
cash, securities or property results from any of the foregoing shall
constitute Deposited Securities and each ADS shall automatically represent its
pro-rata interest in the Deposited Securities as then constituted.
 
 AMENDMENT AND TERMINATION OF DEPOSIT AGREEMENT
 
  The ADRs and the Deposit Agreement may be amended by the Company and the
Depositary, provided that any amendment that imposes or increases any fees or
charges (other than stock transfer or other taxes and other governmental
charges, transfer or registration fees, cable, telex or facsimile transmission
costs, delivery costs or other such expenses), or that shall otherwise
prejudice any substantial existing right of Owners, shall become effective 30
days after notice of such amendment shall have been given to the Owners. Every
Owner of an ADR at the time any amendment to the Deposit Agreement so becomes
effective shall be deemed, by continuing to hold such ADR, to consent and
agree to such amendment and to be bound by the Deposit Agreement as amended
thereby. In no event shall any amendment impair the right of the Owner of any
ADR to surrender such ADR and receive the Deposited Securities represented
thereby, except in order to comply with mandatory provisions of applicable
law.
 
  The Depositary may, and shall at the written direction of the Company,
terminate the Deposit Agreement and the ADRs by mailing notice of such
termination to the Owners at least 90 days prior to the date fixed in such
notice for such termination. After the date so fixed for termination, the
Depositary and its agents will perform no further acts under the Deposit
Agreement and the ADRs, except to advise Owners of such termination, receive
and hold (or sell) distributions on Deposited Securities and deliver Deposited
Securities as soon as practicable after the expiration of one year from the
date so fixed for termination. The Depositary shall sell the Deposited
Securities and shall thereafter (as long as it may lawfully do so) hold in a
segregated account the net proceeds of such sales, together with any other
cash then held by it under the Deposit Agreement, without liability for
interest, in trust for the pro rata benefit of the Owners not theretofore
surrendered. After making such sale, the Depositary shall be discharged from
all obligations in respect of the Deposit Agreement and the ADRs, except to
account for such net proceeds and other cash. After the date so fixed for
termination, the Company shall be discharged from all obligations under the
Deposit Agreement except for its obligations to the Depositary and its agents.
 
 CHARGES OF DEPOSITARY
 
  The Depositary may charge each person to whom ADRs are issued against
deposits of Shares, including deposits in respect of Share Distributions,
Rights and Other Distributions and each person surrendering ADRs for
withdrawal of Deposited Securities, $5.00 for each 100 ADSs (or portion
thereof) evidenced by the ADRs delivered or surrendered, and a fee of $.02 or
less per American Depositary Share (or portion thereof) for any cash
distribution made pursuant to the Deposit Agreement. The Company will pay all
other charges and expenses of the Depositary and any agent of the Depositary
(except the Custodian) pursuant to agreements from time to time between the
Company and the Depositary, except (i) stock transfer or other taxes and other
governmental charges (which are payable by Owners or persons depositing
Shares), (ii) cable, telex and facsimile transmission and delivery charges
incurred at the request of persons depositing, or Owners delivering, Shares,
ADRs or Deposited Securities (which are payable by such persons or Owners),
(iii) transfer or registration fees for the registration of transfer of
Deposited Securities on any applicable register in connection with the deposit
or withdrawal of Deposited Securities (which are payable by persons depositing
Shares or Owners withdrawing Deposited securities; there are no such fees in
respect of the Shares as of the date of the Deposit Agreement) and (iv)
expenses of the Depositary in connection with the conversion of foreign
currency into dollars (which are paid out of such foreign currency).
 
                                      52
<PAGE>
 
 LIABILITY OF OWNERS FOR TAXES
 
  If any tax or other governmental charge shall become payable by or on behalf
of the Custodian or the Depositary with respect to the ADRs, any Deposited
Securities represented by the ADSs evidenced thereby or any distribution
thereon, such tax or other governmental charge shall be paid by the Owner
thereof to the Depositary. The Depositary may refuse to effect any
registration, registration of transfer, split-up or combination thereof or,
subject to the terms and conditions of the Deposit Agreement, any withdrawal
of such Deposited Securities until such payment is made. The Depositary may
also deduct from any distributions on or in respect of Deposited Securities,
or may sell by public or private sale for the account of the Owner thereof any
party or all of such Deposited Securities (after attempting by reasonable
means to notify the Owner thereof prior to such sale), and may apply such
deduction or the proceeds of any such sale in payment of such tax or other
governmental charge, the Owner thereof remaining liable for any deficiency,
and shall reduce the number of ADSs evidenced thereby to reflect any such
sales of Deposited Securities. In connection with any distribution to Owners,
the Company will remit to the appropriate governmental authority or agency all
amounts (if any) required to be withheld and owing to such author to or agency
by the Company; and the Depositary and the Custodian will remit to the
appropriate governmental authority or agency all amounts (if any) required to
be withheld and owing to such authority or agency by the Depositary or the
Custodian. If the Depositary determines that any distribution in property
other than cash (including Shares or rights) on Deposited Securities is
subject to any tax that the Depositary or the Custodian is obligated to
withhold, the Depositary may dispose of all or a portion of such property in
such amounts and in such manner as the depositary deems necessary and
practicable to pay such taxes, by public or private sale, and the Depositary
shall distribute the net proceeds of any such sale or the balance of any such
property after deduction of such taxes to the Owners entitled thereto.
 
 GENERAL LIMITATIONS
 
  The ADRs provide that the Depositary, the Company, their agents and each of
them shall: (i) incur no liability (a) if any present or future law,
regulation or any country or of any governmental or regulatory authority or
stock exchange, the provisions of or governing any Deposited Security, act of
God, war or other circumstance beyond its control shall prevent, delay or
subject to any civil or criminal penalty any act which the Deposit Agreement
or the ADRs provides shall be done or performed by it, or (b) by reason of any
exercise or failure to exercise any discretion given it in the Deposit
Agreement or the ADRs; (ii) assume no liability except to perform its
obligations to the extent they are specifically set forth in the ADRs and the
Deposit Agreement without gross negligence or bad faith; (iii) be under no
obligation to appear in, prosecute or defend any action, suit or other
proceeding in respect of any Deposited Securities or the ADR; or (iv) not be
liable for any action or inaction by it in reliance upon the advice of or
information from legal counsel, accountants, any person presenting Shares for
deposit, any Owner, or any other person believed by it to be competent to give
such advice or information. The Depositary, its agents and the Company may
rely and shall be protected in acting upon any written notice, request,
direction or other document believed by them to be genuine and to have been
signed or presented by the proper party or parties. The Depositary and its
agents will not be responsible for any failure to carry out any instructions
to vote any of the Deposited Securities, for the manner in which any such vote
is cast or for the effect of any such vote. The Depositary and its agents may
own and deal in any class of securities of the Company and its affiliates and
in ADRs. The Company has agreed to indemnify the Depositary and its agents
under certain circumstances and the Depositary has agreed to indemnify the
Company against losses incurred by the Company to the extent such losses are
due to the negligence or bad faith of the Depositary. Notwithstanding the
foregoing, no disclaimer of liability under the Securities Act is intended by
any provision of the ADRs.
 
  Prior to the issue, registration, registration or transfer, split-up or
combination of any ADR, the delivery of any distribution in respect thereof,
or, subject to the terms and conditions of the Deposit Agreement, the
withdrawal of any Deposited Securities, the Company, the Depositary or the
Custodian may require: (i) payment with respect thereto of (a) any stock
transfer or other tax or other governmental charge, (b) any stock transfer or
registration fees in effect for the registration of transfers of Shares or
other Deposited Securities upon any applicable register, and (c) any
applicable charges as provided in the Deposit Agreement; (ii) the product on
of proof satisfactory to it of (a) the identity and genuineness of any
signature and (b) such other information,
 
                                      53
<PAGE>
 
including without limitation, information as to citizenship, residence,
exchange control approval, beneficial ownership of any securities, compliance
with applicable law, regulations, provisions of or governing Deposited
Securities and terms of the Deposit Agreement and the ADRs, as it may deem
necessary or proper; and (iii) compliance with such regulations as the
Depositary may establish consistent with the Deposit Agreement. The issuance
of ADRs, the acceptance of deposits of Shares, the registration, registration
of transfer, split-up or combination of ADRs or, subject to the terms of the
Deposit Agreement, the withdrawal of Deposited Securities may be suspended,
generally or in particular instances, when the ADR register for Deposited
Securities is closed or when any such action is deemed advisable by the
Depositary or the Company.
 
 GOVERNING LAW
 
  The Deposit Agreement is governed by and shall be construed in accordance
with the laws of the State of New York.
 
 THE DEPOSITARY
 
  The Depositary is The Bank of New York, a New York banking corporation,
which has its principal office located in New York, New York. The Bank of New
York is a commercial bank offering a wide range of banking and trust services
to its customers in the New York metropolitan area, throughout the United
States and around the world.
 
                                      54
<PAGE>
 
                                   TAXATION
 
  The following generally summarizes the principal U.S. federal and U.K. tax
consequences of the purchase, ownership and disposition of ADSs evidenced by
ADRs and, except as provided explicitly below, Shares, to beneficial owners
that, for U.S. federal income tax purposes, are citizens or residents of the
U.S. (who are not also resident or, in the case of the individuals, ordinarily
resident in the U.K. for U.K. tax purposes), corporations or partnerships
created or organized under the laws of the United States or any state thereof,
estates the income of which is subject to U.S. federal income taxation
regardless of its source or a trust if a court within the United States is
able to exercise primary supervision over the administration and control of
the trust and one or more United States persons have the authority to control
all substantial decisions of the trust (collectively "U.S. Holders");
provided, however, to the extent and in accordance with the procedures
provided in Notice 98-25 (released by the Service on April 14, 1998) and
future Treasury Regulations which will incorporate Notice 98-25, certain
trusts in existence on August 20, 1996, and treated as U.S. persons prior to
such date, which elect to continue to be treated as U.S. persons will also be
considered U.S. Holders. The discussion of U.S. tax consequences is based on
the advice of Akin, Gump, Strauss, Hauer & Feld, L.L.P. and the discussion of
U.K. tax consequences is based on the advice of Masons.
 
  The statements regarding the U.S. and U.K. tax laws set out below (i) are
based on the laws in force and as interpreted by the relevant taxation
authorities as of the date of this Registration Statement and are subject to
any changes in the U.S. or the U.K. law, or on the interpretation thereof by
the relevant taxation authorities or in the double taxation conventions
between the United States and the United Kingdom (the "Conventions"),
occurring after such date, (ii) are based in part, on representations of the
Depositary, and (iii) assume that each obligation in the Deposit Agreement and
any related agreement will be performed in accordance with its terms.
 
  The summary is of a general nature only and does not discuss all aspects of
U.S. and U.K. taxation that may be relevant to a particular investor. For
example, this summary deals only with ADRs held as capital assets and does not
address special classes of purchasers, such as dealers in securities. U.S.
Holders whose functional currency is not the U.S. dollar, insurance companies,
tax exempt organizations, financial institutions and persons subject to the
alternative minimum tax that may be subject to special rules are not discussed
below. Neither does the following summary address the tax treatment of U.S.
Holders who own, directly or by attribution, 10% or more of the Company's
outstanding voting share capital. Except as otherwise expressly provided
herein, this summary does not discuss foreign, state, local, estate or gift
tax consequences to owners of ADSs and Shares. Since its purpose is limited to
brief consideration of the more commonly relevant provisions, in no case
should this summary be taken as constituting advice to an investor as to how
he will or will not be taxed in any jurisdiction and in no circumstances is it
to substitute for professional advice.
 
  PROSPECTIVE PURCHASERS OF ADSS ARE STRONGLY ADVISED TO CONSULT WITH THEIR
OWN TAX ADVISORS WITH RESPECT TO THE CONTENTS OF THIS SUMMARY AND THE U.S.
FEDERAL, STATE AND LOCAL TAX CONSEQUENCES, THE U.K. TAX CONSEQUENCES AND TAX
CONSEQUENCES IN OTHER JURISDICTIONS, OF THE OWNERSHIP OF ADSS AND THE SHARES
REPRESENTED THEREBY AS APPLICABLE IN THEIR PARTICULAR TAX SITUATIONS.
 
  For purposes of the Conventions and the United States Internal Revenue Code
of 1986, as amended (the "Code"), U.S. Holders will be treated as the owners
of the Shares represented by ADSs evidenced by ADRs.
 
TAXATION OF DIVIDENDS
 
  Under current U.K. law, the Company will be required when paying a dividend
in respect of the Shares to account to the U.K. Inland Revenue for a payment
known as advance corporation tax ("ACT"). At present, the rate of ACT is equal
to one-quarter of the amount of the dividend. Dividends carry a tax credit
equal to one-quarter of the cash dividend, amounting to 20% of the sum of the
cash dividend paid and the associated tax credit. The tax credit will be
available to offset a U.K. resident individual's liability to U.K. income tax
in respect
 
                                      55
<PAGE>
 
of the dividend, and may, if the U.K. resident is a non-taxpayer, be reclaimed
from the U.K. Inland Revenue in cash. A basic rate taxpayer will have no
further liability to tax on the dividend, but a higher rate taxpayer will be
subject to an additional tax liability on the difference between the higher
rate tax liability and the value of the tax credit. U.K. resident trustees of
discretionary trusts liable to account for income tax at 34% on the trust's
income may also be required to account for additional tax. A U.K. resident
corporate shareholder will not normally be liable to U.K. corporation tax on
any dividend received from the Company and will be entitled to offset the
related ACT on the dividend against ACT due on its own qualifying
distributions. From April 6, 1999, the treatment of tax credits will change.
Dividends will carry a tax credit of one-ninth of a cash dividend. Although
the credit will be available to offset a U.K. resident individual's liability
to U.K. income tax in respect of the dividend, such tax credit will not be
refundable.
 
  An Eligible U.S. Holder (as defined below) is entitled under the Convention
relating to income taxes (the "Income Tax Convention") and current U.K. law to
claim from the U.K. Inland Revenue a refund (a "Treaty Payment") for an amount
equal to the amount of the tax credit to which an individual resident in the
U.K. for U.K. tax purposes would have been entitled had he received the
dividend (the "Tax Credit Amount"), subject to a U.K. withholding tax of 15%
of the sum of the dividend paid and the related Tax Credit Amount. For
example, assuming continuance of the Tax Credit Amount at the rate of 20/80ths
of the amount of the dividend, a dividend payment of 80p to such an eligible
U.S. Holder would generally entitle the Eligible U.S. Holder to a Treaty
Payment of 5p (a Tax Credit Amount of 20p, reduced by 15% of the sum of the
dividend and the Tax Credit Amount, or 15p) from the U.K. Inland Revenue
giving a total realization of 85p (before applicable U.S. taxes). After April
5, 1999 because of the reduction of tax credits in the U.K., as outlined
above, there will be no effective refund of tax (i.e., Treaty Payment) to
Eligible U.S. Holders.
 
  For purposes of this Registration Statement, the term "Eligible U.S. Holder"
means a U.S. Holder that is a beneficial owner of an ADS and of the cash
dividend paid thereon and that satisfies the following conditions: the U.S.
Holder (i) is an individual or a corporation resident in the U.S. for the
purposes of the Income Tax Convention (and, in the case of a corporation, is
not also resident in the U.K. for U.K. tax purposes), (ii) holds the ADSs in a
manner which is not effectively connected with a permanent establishment in
the U.K. through which such U.S. Holder carries on business or with a fixed
base in the U.K. from which such U.S. Holder performs independent personal
services, (iii) under certain circumstances, is not an investment or holding
company 25% or more of the capital of which is owned, directly or indirectly,
by persons that are not individuals resident in, and are not nationals of the
U.S., and (iv) under certain circumstances, is not exempt from federal income
tax on dividend income in the U.S. Special rules apply to a corporation which
owns or, alone or together with one or more associated corporations, controls,
directly or indirectly, 10% or more of the voting shares of the Company.
 
  A U.S. Holder that is a U.S. partnership, trust or estate may be entitled
under the Income Tax Convention to receive a Treaty Payment in respect of a
dividend paid by the Company, but only to the extent that the income derived
by such partnership, trust or estate is subject to U.S. tax as the income of a
U.S. resident either in its hands or in the hands of its partners or
beneficiaries, as the case may be.
 
  The provisions of the following two sentences are applicable until April 5,
1999. For U.S. federal income tax purposes, the gross amount of a dividend
plus the Tax Credit Amount (i) will be included in gross income by an Eligible
U.S. Holder (at the dollar value of the dividend payment, on the date of the
receipt by the Depositary, regardless of whether the dividend is converted
into dollars) and (ii) will be treated as foreign source dividend income to
the extent paid out of current or accumulated earnings and profits as
determined for U.S. federal income tax purposes. Subject to certain
limitations, the 15% U.K. withholding tax will be treated as a foreign income
tax eligible for direct credit against such Eligible U.S. Holder's federal
income taxes. After April 5, 1999, if dividends are paid by the Company, U.S.
Holders should consult their tax advisors regarding the amounts of such
dividends to be included in gross income and the amounts of any U.K. taxes
that U.S. Holders may be treated as having paid with respect to such dividends
for U.S. foreign tax credit purposes. For purposes of the foreign tax credit
limitations, dividends distributed by the Company will generally constitute
"passive income" or, in the case of certain U.S. Holders, "financial services
income." The consequences of these limitations will
 
                                      56
<PAGE>
 
depend on the nature and sources of each U.S. Holder's income and the
deduction appropriately allocated or apportioned thereto. No dividends
received deduction will be allowed with respect to dividends paid by the
Company. If dividends paid by the Company were to exceed its current and
accumulated earnings and profits as determined for federal income tax
purposes, such excess would be treated as a non-taxable return of capital to
the extent of the U.S. Holder's adjusted basis in the ADSs, and any excess
would be treated as capital gain.
 
  The Company may make arrangements with the U.K. Inland Revenue (the "H
Arrangements") which will permit the applicable Treaty Payments, if any, to be
paid to certain Eligible U.S. Holders at the same time as, and together with,
cash dividends paid by the Company in respect of ADSs. The H Arrangements,
which operate in respect of dividends paid on shares of U.K. companies that
are represented by ADSs evidenced by ADRs, are implemented at the discretion
of the U.K. Inland Revenue and may be amended or revoked. The H Arrangements
generally apply to Eligible U.S. Holders other than (i) estates or trusts any
of the beneficiaries of which are not resident in the U.S., (ii) investment or
holding companies 25% or more of the capital of which is owned, directly or
indirectly, by persons who are not individuals resident in, or nationals of,
the U.S., (iii) persons (other than certain pension funds) exempt from U.S.
federal income tax with respect to cash dividends paid on the Shares, (iv)
persons owning 10% or more of the Shares, and (v) certain business and
investment trusts. To claim the benefit of the H Arrangements, (i) the
registered holder must complete the declaration on the reverse of the dividend
check confirming the Eligible U.S. Holder's entitlement to the Treaty Payment
and present the check for payment within three months from the date of issue
of the check or (ii) in the case of ADRs held through The Depository Trust
Company ("DTC"), the broker-dealer or bank-member of DTC which holds the ADRs
on behalf of the Eligible U.S. Holder must complete a declaration as to the
conditions entitling the Eligible U.S. Holder to the Treaty Payment.
 
  If the H Arrangements are not made with the U.K. Inland Revenue at the time
an Eligible U.S. Holder receives a distribution from the Company, or if the H
Arrangements are made at such time but an Eligible U.S. Holder does not
qualify for the benefits of such arrangements, such Eligible U.S. Holder must,
in order to obtain a Treaty Payment, if any, to which it is entitled, file a
claim for the Treaty Payment in the manner described in U.S. Internal Revenue
Service Revenue Procedure 80-18, 1980-1 C.B. 623 and Revenue Procedure 81-58,
1981-2 C.B. 678, as amended. Claims for such payments must be made within five
years from the January 31 following the end of the year of assessment to which
they relate. The first claim for a tax credit under these procedures is made
by sending the appropriate U.K. form in duplicate to the Internal Revenue
Service Center with which the Eligible Holder's last U.S. income tax return
was filed. Forms may be obtained from the Internal Revenue Service, Assistant
Commissioner (International), 950 L'Enfant Plaza South, S.W., Washington, D.C.
20219; Attention: Taxpayer's Service Division. Because a claim is not
considered made until the U.K. tax authorities receive the appropriate form
from the Internal Revenue Service, forms should be sent to the Internal
Revenue Service well before the end of the applicable limitation period. Any
claim by a claimant after the first claim should be filed directly with the
Financial Intermediaries and Claims Office, Fitz Roy House, P.O. Box 40,
Nottingham, England, NG2 IBD.
 
TAXATION OF CAPITAL GAINS
 
  A U.S. Holder who is not resident or ordinarily resident in the U.K. for
U.K. tax purposes will not be liable for U.K. tax on capital gains realized on
the disposal of ADSs unless, at the time of disposal, the U.S. Holder is
carrying on a trade, profession or vocation in the U.K. through a branch or
agency which constitutes a permanent establishment or fixed base, and the ADSs
are or have been used, held or acquired for the purposes of such trade,
profession or vocation of such branch or agency.
 
  Upon the sale or other disposition of an ADS, a U.S. Holder will generally
recognize gain or loss for U.S. federal income tax purposes in an amount equal
to the difference between the amount realized on such sale or disposition and
the U.S. Holder's adjusted tax basis in the ADS. Such gain or loss will be
capital gain or loss if the U.S. Holder holds its ADS as a capital asset.
Prospective investors should consult their tax advisors regarding the U.S.
federal income tax treatment of capital gains (which may be taxed at lower
rates than ordinary income for certain taxpayers who are individuals) and
losses (the deductibility of which is subject to limitations).
 
                                      57
<PAGE>
 
  A U.S. Holder that is liable for both U.K. and U.S. tax on a gain on the
disposal of the ADSs will generally be entitled, subject to certain
limitations and pursuant to the Income Tax Convention, to credit the amount of
U.K. capital gains or corporation tax, as the case may be, paid in respect of
such gain against such U.S. Holder's U.S. federal income tax liability in
respect of such gain. U.S. Holders should seek professional tax advice to
determine their entitlement to credit U.K. tax against their U.S. federal
income tax liability.
 
PASSIVE FOREIGN INVESTMENT COMPANY STATUS
 
 PFIC CLASSIFICATION
 
  Special U.S. taxation rules are applicable to U.S. persons owning shares in
a "passive foreign investment company" ("PFIC"). Investors that are not
subject to U.S. taxation in respect of income on the ADSs or that are not U.S.
persons generally will not be affected by the PFIC rules. A foreign
corporation will be classified as a PFIC for any taxable year during which
either (i) 75% or more of its gross income (including the pro rata share of
the gross income of any corporation (U.S. or foreign) in which the Company is
considered to own 25% or more of the shares by value) for the taxable year is
passive income or (ii) 50% or more of the average quarterly value of all of
its assets (including the pro rata share of the assets of any corporation in
which the Company is considered to own 25% or more of the shares by value)
produce, or are held for the production of, passive income. For this purpose,
passive income generally includes dividends, interest, royalties, rents (other
than rents and royalties derived in the active conduct of a trade or
business), annuities and gains from assets that produce passive income.
Because the Company will have a relatively large amount of passive assets,
such as cash and marketable securities (including cash derived from the
issuance of ADSs in the offering), pending investment of such assets in the
Company's business, it is possible that the Company may be or could become a
PFIC in any year. Although the Company will attempt to conduct its business so
as to avoid PFIC status, the Company can provide no assurances that it will
not be a PFIC in respect of its current or any future taxable year.
 
 CONSEQUENCES OF PFIC STATUS
 
  If the Company were to be classified as a PFIC, a U.S. Holder generally
would be subject to special tax rules with respect to gain realized on the
sale or any other disposition of such ADSs, and any "excess distribution" by
the Company to the U.S. Holder with respect to ADSs held for more than one
taxable year. In general, excess distributions are any distributions
(including return of capital distributions) received by the U.S. Holder in a
taxable year that are greater than 125% of the average annual distributions
received by the U.S. Holder in the three preceding taxable years (or the U.S.
Holder's holding period, if shorter). Under these rules (i) the gain or excess
distribution would be allocated ratably over the U.S. Holder's holding period
for the ADSs, (ii) the amount allocated to the current taxable year would be
treated as ordinary income, (iii) the amount allocated to each prior year
would be subject to tax at the highest rate in effect for that year and (iv)
the interest charge generally applicable to underpayments of tax would be
imposed with respect to the resulting tax attributable to each such prior
year. For purposes of the foregoing rules, a U.S. Holder who uses such ADSs as
security for a loan will be treated as having disposed of such ADSs.
 
  For tax years beginning after 1997, a U.S. Holder of ADSs in a PFIC that are
treated as "marketable stock" may make a "mark-to-market" election. A
shareholder making the "mark-to-market" election will not be subject to the
PFIC rules described above. Instead, in general, an electing shareholder will
include in each year as ordinary income the excess, if any, of the fair market
value of the ADSs at the end of the taxable year over their adjusted basis and
will be permitted an ordinary loss in respect of the excess, if any, of the
adjusted basis of the ADSs over their fair market value at the end of the
taxable year (but only to the extent of the net amount of previously included
income as a result of the "mark-to-market" election). The electing U.S.
Holder's basis in the ADSs will be adjusted to reflect any such income or loss
amounts. Guidance on what may constitute "marketable stock" is not yet
available from the United States Department of Treasury.
 
  If the Company is a PFIC in any year, a U.S. Holder who beneficially owns
ADSs during such year must file an annual return on IRS Form 8621 that
describes its interest in the Company, the distributions received from the
Company and any gain realized on the disposition of ADSs.
 
                                      58
<PAGE>
 
ESTATE AND GIFT TAXES
 
  An ADR held by an individual U.S. Holder whose domicile is determined to be
in the U.S. for purposes of the Estate Tax Treaty and who is not a national of
the U.K. will not be subject to U.K. inheritance tax on such individual's
death or on a lifetime transfer of the ADR except in certain cases where the
ADR (i) is part of the business property of a U.K. permanent establishment of
an enterprise of the U.S. or (ii) pertains to a U.K. fixed base used for the
performance of independent personal services. The Estate Tax Treaty generally
provides a credit against U.S. federal estate or gift tax liability for the
amount of any tax paid in the U.K. in a case where the ADR is subject to both
U.K. inheritance tax and to U.S. federal estate or gift tax. Similarly, a
Share or ADR comprised in a settlement generally will not be chargeable to
U.K. inheritance tax if the settlement was made when the settlor was domiciled
in the U.S. and was not a national of the U.K. An individual U.S. Holder will
be subject to U.S. estate and gift taxes with respect to the ADRs in the same
manner and to the same extent as with respect to other types of personal
property.
 
U.K. STAMP DUTY ("SD") AND STAMP DUTY RESERVE TAX ("SDRT")
 
  SDRT at the then applicable rate arises upon the deposit with the Depositary
of the Shares in exchange for ADSs evidenced by ADRs. The current rate of SDRT
on the deposit of Shares is 1.5%. In certain cases, U.K. SD could also arise
on the deposit and the current rate is (Pounds)1.50 per (Pounds)100 (or part
thereof). The amount of SDRT payable will be reduced by any SD paid in
connection with the same transaction. SDRT will be payable by the Depositary
in the first instance. In accordance with the terms of the Deposit Agreement,
holders of ADRs must pay an amount in respect of such tax to the Depositary,
except in connection with the initial issuance and deposit of the Shares with
the Depositary.
 
  Provided that the instrument of transfer is not executed in the United
Kingdom and remains at all subsequent times outside the United Kingdom, no
U.K. SD will be payable on the acquisition or transfer of ADSs. Nor will an
agreement to transfer ADSs give rise to a liability to SDRT, provided both
parties are not resident in the U.K. and the agreement is made outside the
U.K.
 
  A transfer of Shares by the Depositary or its nominee to the relative ADR
holder when the ADR holder is not transferring beneficial ownership will give
rise to U.K. SD at the rate of (Pounds)0.50 per transfer.
 
  Transfers of Shares, as opposed to ADSs, will normally give rise to a charge
to U.K. SD at the rate of (Pounds)0.50 per (Pounds)100 (or part thereof) of
the price payable for the Shares at the time of the transfer or agreement to
transfer. SD and SDRT are usually the liability of the purchaser. Where such
Shares are later transferred to the Depositary, further SDRT will normally be
payable upon the deposit at the rate of 1.5% of the value of the Shares at the
time of transfer. In certain cases, U.K. SD could also arise in the transfer
at the rate of (Pounds)l.50 per (Pounds)100 (or part thereof), subject to the
amount of any SDRT being reduced by such SD on the same transaction.
 
                                      59
<PAGE>
 
                                 UNDERWRITING
 
  Subject to the terms and conditions contained in the Underwriting Agreement,
dated         , 1998 (the "Underwriting Agreement"), the Underwriters named
below (the "Underwriters"), for whom Donaldson, Lufkin & Jenrette Securities
Corporation ("DLJ"), Johnson Rice & Company L.L.C. and Southcoast Capital
L.L.C. are acting as representatives (the "Representatives"), have severally
agreed to purchase from the Company an aggregate of 8,000,000 ADSs. The number
of ADSs that each Underwriter has agreed to purchase is set forth opposite its
name below:
 
<TABLE>
<CAPTION>
                                                                       NUMBER OF
                                UNDERWRITERS                             ADSS
      <S>                                                              <C>
      Donaldson, Lufkin & Jenrette Securities Corporation.............
      Johnson Rice & Company L.L.C....................................
      Southcoast Capital L.L.C........................................
                                                                       ---------
        Total......................................................... 8,000,000
                                                                       =========
</TABLE>
 
  The Underwriting Agreement provides that the obligations of the several
Underwriters to purchase and accept delivery of the ADSs offered hereby are
subject to approval by their counsel of certain legal matters and to certain
other conditions. The Underwriters are obligated to purchase and accept
delivery of all the ADSs offered hereby (other than those shares covered by
the over-allotment option described below) if any are purchased.
 
  The Underwriters initially propose to offer the ADSs in part directly to the
public at the initial public offering price set forth on the cover page of
this Prospectus and in part to certain dealers (including the Underwriters) at
such price less a concession not in excess of $     per share. The
Underwriters may allow, and such dealers may re-allow, to certain other
dealers a concession not in excess of $     per share. After the initial
offering of ADSs, the public offering price and other selling terms may be
changed by the Representatives at any time without notice. The Underwriters do
not intend to confirm sales to any accounts over which they exercise
discretionary authority.
 
  The Company has granted to the Underwriters an option, exercisable within 30
days after the date of this Prospectus, to purchase, from time to time, in
whole or in part, up to an aggregate of 1,200,000 additional ADSs at the
initial public offering price less underwriting discounts and commissions. The
Underwriters may exercise such option solely to cover overallotments, if any,
made in connection with the Offering. To the extent that the Underwriters
exercise such option, each Underwriter will become obligated, subject to
certain conditions, to purchase its pro rata portion of such additional shares
based on such Underwriter's percentage underwriting commitment as indicated in
the preceding table.
 
  The Company has agreed to indemnify the Underwriters against certain
liabilities, including liabilities under the Securities Act, or to contribute
to payments that the Underwriters may be required to make in respect thereof.
 
  Each of the Company and its executive officers and directors has agreed,
subject to certain exceptions, not to (i) offer, pledge, sell, contract to
sell, sell any option or contract to purchase, purchase any option or contract
to sell, grant any option, right or warrant to purchase, or otherwise transfer
or dispose of, directly or indirectly, any Shares, ADSs or ADRs or any
securities convertible into or exercisable or exchangeable for Shares, ADSs or
ADRs (including, without limitation, Shares, ADSs or ADRs or securities
convertible into or exercisable or exchangeable for shares, ADSs or ADRs which
may be deemed to be beneficially owned in accordance with the
 
                                      60
<PAGE>
 
rules and regulations of the SEC) or (ii) enter into any swap or other
arrangement that transfers all or a portion of the economic consequences
associated with the ownership of any Share, ADS or ADR (regardless of whether
any of the transactions described in clause (i) or (ii) is to be settled by
the delivery of Shares, ADSs or ADRs or such other securities, in cash or
otherwise) for a period of 180 days after the date of this Prospectus without
the prior written consent of DLJ. In addition, during such period, the Company
has also agreed not to file any registration statement with respect to, and
each of its executive officers and directors has agreed not to make any demand
for, or exercise any right with respect to, the registration of any Shares,
ADSs or ADRs, or any securities convertible into or exercisable or
exchangeable for Shares, ADSs or ADRs without DLJ's prior written consent.
 
  Prior to the offering, there has been no established trading market for the
ADSs. The initial public offering price for the shares of ADSs offered hereby
will be determined by negotiation among the Company and the Representatives.
The factors to be considered in determining the initial public offering price
include the history of and the prospects for the industry in which the Company
competes, the past and present operations of the Company, the historical
results of operations of the Company, the prospects for future earnings of the
Company, the recent market prices of securities of generally comparable
companies and the general condition of the securities markets at the time of
the offering.
 
  Application has been made to list the ADSs on the Nasdaq National Market. In
order to meet the requirements for listing the ADSs on Nasdaq, the
Underwriters have undertaken to sell to a minimum of 300 round lot holders.
Application will be made for the Shares represented by the ADSs to be admitted
for trading on the AIM.
 
  Other than in the United States, no action has been taken by the Company or
the Underwriters that would permit a public offering of the shares of ADSs
offered hereby in any jurisdiction where action for that purpose is required.
The ADSs offered hereby may not be offered or sold, directly or indirectly,
nor may this Prospectus or any other offering material or advertisements in
connection with the offer and sale of any such ADSs be distributed or
published in any jurisdiction, except under circumstances that will result in
compliance with the applicable rules and regulations of such jurisdiction.
Persons into whose possession this Prospectus comes are advised to inform
themselves about and to observe any restrictions relating to the offering of
the ADSs and the distribution of this Prospectus. This Prospectus does not
constitute an offer to sell or a solicitation of an offer to buy any ADSs
offered hereby in any jurisdiction in which such an offer or a solicitation is
unlawful.
 
  In connection with the offering, the Underwriters may engage in transactions
that stabilize, maintain or otherwise affect the price of the ADSs.
Specifically, the Underwriters may overallot the offering, creating a
syndicate short position. The Underwriters may bid for and purchase ADSs in
the open market to cover such syndicate short position or to stabilize the
price of the ADSs. In addition, the underwriting syndicate may reclaim selling
concessions from syndicate members if the syndicate repurchases previously
distributed ADSs in syndicate covering transactions, in stabilization
transactions or otherwise. These activities may stabilize or maintain the
market price of the ADSs above independent market levels. The Underwriters are
not required to engage in these activities, and may end any of these
activities at any time.
 
  Each Underwriter has undertaken to the Company that (i) it has not offered
or sold and prior to the date six months after their date of issue will not
offer or sell any ADSs to persons in the United Kingdom except to persons
whose ordinary activities involve them in acquiring, holding, managing or
disposing of investments (as principal or agent) for the purposes of their
businesses or otherwise in circumstances which do not constitute an offer to
the public in the United Kingdom within the meaning of the Public Offers of
Securities Regulations 1995; (ii) it has complied with and will comply with
all applicable provisions of the Financial Services Act 1986 with respect to
anything done by it in relation to the ADSs offered hereby in, from or
otherwise involving the United Kingdom; and (iii) it has only issued or passed
on and will only issue or pass on in the United Kingdom any document received
by it in connection with the offering to a person who is of a kind described
in Article 11(3) of the Financial Services Act 1986 (Investment
Advertisements) (Exemptions) Order 1996 or is a person to whom the document
may otherwise lawfully be issued or passed on.
 
                                      61
<PAGE>
 
                                 LEGAL MATTERS
 
  Certain legal matters in connection with the offering made hereby are being
passed upon for the Company by Akin, Gump, Strauss, Hauer & Feld, L.L.P.,
special U.S. counsel for the Company, and Masons, English counsel for the
Company. Certain legal matters in connection with the Offering are being
passed upon for the Underwriters by Davis Polk & Wardwell, U.S. counsel for
the Underwriters. The validity of the Ordinary Shares represented by the ADSs
and certain other legal matters will be passed upon by Masons. Akin, Gump,
Strauss, Hauer & Feld, L.L.P. and Davis Polk & Wardwell may rely upon Masons
with respect to all matters of English law.
 
                                    EXPERTS
 
  The consolidated balance sheets as of December 31, 1995, June 30, 1996 and
1997 and March 31, 1998 and the consolidated statements of operations and cash
flows for each of the years ended December 31, 1994 and 1995, the six months
ended June 30, 1996, the fiscal year ended June 30, 1997 and the nine months
ended March 31, 1998 have been included herein and in the Registration
Statement in reliance upon the audit reports of Pannell Kerr Forster,
chartered accountants, appearing elsewhere herein, and upon the authority of
such firm as experts in accounting and auditing.
 
  The estimates of net proved reserves of natural gas of the Company as of
April 1, 1998 included herein have been excerpted from, and included herein in
reliance upon, the report of Gaffney, Cline & Associates Ltd., an independent
petroleum engineering firm, and upon the authority of such firm as experts in
estimation of petroleum reserves.
 
                                      62
<PAGE>
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                           PAGE
<S>                                                                        <C>
Statement of Directors' Responsibilities.................................. F-2
Report of Independent Public Accountants.................................. F-3
Consolidated Statements of Operations for the years ended December 31,
 1994 and 1995, the six months ended June 30, 1996, the year ended June
 30, 1997 and the nine months ended March 31, 1997 (unaudited) and 1998... F-4
Consolidated Balance Sheets as of December 31, 1995, June 30, 1996 and
 1997 and March 31, 1998.................................................. F-5
Consolidated Cash Flow Statements for the years ended December 31, 1994
 and 1995, the six months ended June 30, 1996, the year ended June 30,
 1997 and the nine months ended March 31, 1997 (unaudited) and 1998....... F-6
Notes to the Consolidated Financial Statements............................ F-7
</TABLE>
 
                                      F-1
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
                   STATEMENT OF DIRECTORS' RESPONSIBILITIES
 
  The following statement, which should be read in conjunction with the report
of Independent Public Accountants set out on page F-3, is made with a view to
distinguishing for shareholders the respective responsibilities of the
Directors and of the auditors in relation to the consolidated financial
statements.
 
  The Directors are required by UK company law to prepare financial statements
for each fiscal period that give a true and fair view of the state of affairs
of the Company and Subsidiaries as at the end of the fiscal period and of the
profit or loss and cash flows for that period.
 
  The Directors confirm that suitable accounting policies have been used and
applied consistently, and that reasonable and prudent judgments and estimates
have been made in the preparation of the financial statements. The Directors
also confirm that applicable accounting standards have been followed and that
the financial statements have been prepared on a going concern basis.
 
  The Directors are responsible for keeping proper accounting records, for
safeguarding the assets of the Company and Subsidiaries and hence for taking
reasonable steps for the prevention and detection of fraud and other
irregularities.
 
                                      F-2
<PAGE>
 
               INDEPENDENT ENERGY HOLDINGS PLC AND SUBSIDIARIES
 
                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To the Board of Directors and the Shareholders
of Independent Energy Holdings plc:
 
  We have audited the consolidated balance sheets of Independent Energy
Holdings plc and subsidiaries, as defined in Note 2 to these financial
statements, as of 31 March 1998, 30 June 1997 and 1996, and December 31, 1995,
and the related consolidated statements of operations and cash flows for the
years ended 31 December 1995 and 1994, the six months ended 30 June 1996, the
year ended 30 June 1997 and the nine months ended 31 March 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 audits in accordance with generally accepted auditing
standards in the United Kingdom, which are substantially the same as auditing
standards generally accepted 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 of material misstatement. An audit
also 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
our audits provide a reasonable basis for our opinion.
 
  In our opinion, the consolidated financial statements present fairly, in all
material respects, the financial position of Independent Energy Holdings plc
and subsidiaries as of 31 March 1998, June 30, 1997 and 1996, and December 31,
1995, and the results of their operations and their cash flows for the years
ended 31 December 1995 and 1994, the six months ended 30 June 1996, the year
ended 30 June 1997 and the nine months ended 31 March 1998 in accordance with
generally accepted accounting principles in the United Kingdom.
 
  Accounting principles generally accepted in the United Kingdom vary in
certain respects from accounting principles generally accepted in the United
States. The application of the latter would have affected the determination of
net results, shareholders' funds and cash flows for the two years ended 31
December 1995 and 1994, the six months ended 30 June 1996, the year ended 30
June 1997 and the nine months ended 31 March 1998 to the extent summarized in
Notes 29 and 30 to the consolidated financial statements.
 
                                          Pannell Kerr Forster
                                          Chartered Accountants and Registered
                                           Auditors
 
Nottingham, England
4 June 1998
 
                                      F-3
<PAGE>
 
          INDEPENDENT ENERGY HOLDINGS PLC AND SUBSIDIARY UNDERTAKINGS
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
 
         (ALL AMOUNTS STATED IN POUNDS STERLING EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                       NINE MONTHS ENDED
                                 YEAR ENDED   YEAR ENDED  SIX MONTHS  YEAR ENDED           MARCH 31,
                                DECEMBER 31, DECEMBER 31, ENDED JUNE   JUNE 30,     -------------------------
                          NOTE      1994         1995      30, 1996      1997          1997          1998
                          ----- ------------ ------------ ----------  -----------   -----------   -----------
                                                                                    (UNAUDITED)
<S>                       <C>   <C>          <C>          <C>         <C>           <C>           <C>
TURNOVER (REVENUE)--
 CONTINUING.............    4           --       4,701      173,701    11,127,164    5,490,338     34,921,839
   --Discontinued.......    4      118,589          --           --            --           --             --
Cost of sales...........          (127,327)         --     (171,448)  (10,872,238)  (5,360,559)   (33,634,538)
                                  --------     -------     --------   -----------   ----------    -----------
GROSS PROFIT............            (8,738)      4,701        2,253       254,926      129,779      1,287,301
Depreciation and
 amortization...........  11/12    (39,674)     (2,858)      (5,681)     (141,850)     (97,299)      (301,608)
Administrative expenses.           (55,367)    (90,915)    (492,199)   (1,363,343)  (1,036,849)    (1,337,395)
                                  --------     -------     --------   -----------   ----------    -----------
OPERATING LOSS--
 CONTINUING.............    4           --     (89,072)    (495,627)   (1,250,267)  (1,004,369)      (351,702)
     --Discontinued.....    4     (103,779)         --           --            --           --             --
Exceptional items.......    9      168,191          --     (460,983)           --           --             --
Interest income.........    7        4,081      24,029       65,417       189,071      156,776         84,572
Interest expense........    7         (806)         --           --      (120,397)    (111,967)      (158,975)
                                  --------     -------     --------   -----------   ----------    -----------
(LOSS)/PROFIT ON
 ORDINARY ACTIVITIES
 BEFORE TAXATION........    8       67,687     (65,043)    (891,193)   (1,181,593)    (959,560)      (426,105)
Tax on loss on ordinary
 activities.............            (9,000)      5,576           --            --           --             --
                                  --------     -------     --------   -----------   ----------    -----------
RETAINED (LOSS)/PROFIT
 FOR THE PERIOD.........            58,687     (59,467)    (891,193)   (1,181,593)    (959,560)      (426,105)
                                  ========     =======     ========   ===========   ==========    ===========
BASIC EARNINGS (LOSSES)
 PER SHARE..............   10        187.4 p    (176.8)p       (9.9)p        (9.0)p       (7.3)p         (2.5)p
</TABLE>
 
  Movements on reserves are set out in note 19.
 
  There are no material differences between results calculated on an
historical cost basis and those reported above.
 
  The results for the period reflect all recognized gains and losses.
 
  The accompanying notes are an integral part of these financial statements.
 
                                      F-4
<PAGE>
 
          INDEPENDENT ENERGY HOLDINGS PLC AND SUBSIDIARY UNDERTAKINGS
 
                          CONSOLIDATED BALANCE SHEETS
 
                    (ALL AMOUNTS STATED IN POUNDS STERLING)
 
<TABLE>
<CAPTION>
                                                   JUNE 30,
                                DECEMBER 31, ---------------------   MARCH 31,
                           NOTE     1995       1996        1997        1998
                           ---- ------------ ---------  ----------  -----------
<S>                        <C>  <C>          <C>        <C>         <C>
FIXED ASSETS
Intangible assets........   11     657,757     897,184   1,544,689    3,228,937
Tangible assets..........   12     707,436   1,155,450   8,503,781   17,687,858
CURRENT ASSETS
Debtors:
Amounts due within one
 year....................   14      54,688     301,048   4,880,460    9,236,883
Investment...............   13          --   4,300,154          --           --
Cash at bank and in hand.        1,633,183   1,341,204   1,923,005      992,244
                                 ---------   ---------  ----------  -----------
                                 1,687,871   5,942,406   6,803,465   10,229,127
CREDITORS
AMOUNTS FALLING DUE
 WITHIN ONE YEAR.........   15     (69,336)   (377,813) (3,956,441) (10,861,713)
                                 ---------   ---------  ----------  -----------
NET CURRENT ASSETS.......        1,618,535   5,564,593   2,847,024     (632,586)
                                 ---------   ---------  ----------  -----------
Total Assets less Current
 Liabilities.............        2,983,728   7,617,227  12,895,494   20,284,209
CREDITORS
AMOUNTS FALLING DUE AFTER
 MORE THAN ONE YEAR......   16          --    (830,212) (5,937,925) (11,155,703)
                                 ---------   ---------  ----------  -----------
NET ASSETS...............        2,983,728   6,787,015   6,957,569    9,128,506
                                 =========   =========  ==========  ===========
CAPITAL AND RESERVES
Called up share capital..   18      40,623     131,248     149,914      177,930
Capital reserve..........   19     543,946          --          --           --
Share premium account....   19   2,524,143   6,711,001   8,044,482   10,613,508
Profit and Loss account..   19    (124,984)    (55,234) (1,236,827)  (1,662,932)
                                 ---------   ---------  ----------  -----------
SHAREHOLDERS' FUNDS......   20   2,983,728   6,787,015   6,957,569    9,128,506
                                 =========   =========  ==========  ===========
</TABLE>
 
 
   The accompanying notes are an integral part of these financial statements.
 
                                      F-5
<PAGE>
 
          INDEPENDENT ENERGY HOLDINGS PLC AND SUBSIDIARY UNDERTAKINGS
 
                       CONSOLIDATED CASH FLOW STATEMENTS
 
                    (ALL AMOUNTS STATED IN POUNDS STERLING)
 
<TABLE>
<CAPTION>
                              YEAR ENDED        SIX MONTHS                NINE MONTHS ENDED
                             DECEMBER 31,         ENDED     YEAR ENDED        MARCH 31,
                          --------------------   JUNE 30,    JUNE 30,   -----------------------
                            1994       1995        1996        1997        1997         1998
                          ---------  ---------  ----------  ----------  -----------  ----------
                                                                        (UNAUDITED)
<S>                       <C>        <C>        <C>         <C>         <C>          <C>
RECONCILIATION OF
 OPERATING (LOSSES) TO
 NET CASH (OUTFLOW) FROM
 OPERATING ACTIVITIES
 Operating (loss).......   (103,779)   (89,072)   (495,627) (1,250,267) (1,004,369)    (351,702)
 Depreciation,
  amortization and
  result on asset sales.     39,674      2,858       3,875     146,991      97,299      301,608
 Changes in debtors.....    139,467    (14,219)   (246,360) (3,931,165) (2,737,018)  (4,356,423)
 Changes in creditors...   (112,454)     8,437     229,938   2,695,153   1,029,883    2,958,318
 Exchange movements.....         --         --      23,693     (39,535)   (163,434)      (1,241)
                          ---------  ---------  ----------  ----------  ----------   ----------
 Net cash outflow from
  operating activities..    (37,092)   (91,996)   (484,481) (2,378,823) (2,777,639)  (1,449,440)
RETURNS ON INVESTMENTS
 AND SERVICING OF
 FINANCE
 Interest received......      4,081     24,029      41,724     189,071     155,336       81,524
 Interest paid..........       (806)        --          --     (80,862)    (70,968)    (653,006)
                          ---------  ---------  ----------  ----------  ----------   ----------
                              3,275     24,029      41,724     108,209      84,368     (571,482)
TAXATION
 Tax paid...............         --     (3,424)         --          --          --           --
CAPITAL EXPENDITURE
 Purchase of tangible
  fixed assets..........   (425,744)   (56,343)         --  (3,759,500) (1,654,582)  (6,764,254)
 Purchase of intangible
  fixed assets..........    (95,302)  (316,600)   (212,199)         --    (351,030)    (536,938)
 Sale of tangible
  assets................    354,196         --       6,000          --          --           --
                          ---------  ---------  ----------  ----------  ----------   ----------
                          (166,850)   (372,943)   (206,199) (3,759,500) (2,005,612)  (7,301,192)
MANAGEMENT OF LIQUID
 RESOURCES
 Purchase of commercial
  paper.................         --         --  (4,300,154)         --          --           --
 Sale of commercial
  paper.................         --         --          --   4,300,154          --           --
                          ---------  ---------  ----------  ----------  ----------   ----------
                                 --         --  (4,300,154)  4,300,154          --           --
FINANCING
 Proceeds from exercised
  share warrants........         --     32,101          --          --          --           --
 Proceeds from exercised
  share options.........         --         --          --          --          --      170,000
 Issue of ordinary share
  capital...............         --  1,906,621   5,000,000   1,352,147          --    2,500,000
 Less issue costs.......         --         --    (305,520)         --          --      (72,958)
 Issue of loan notes....         --         --          --   1,400,000          --           --
 New loans due within
  one year..............    286,026     50,494          --          --          --    1,000,000
 New loans due in over
  one year..............         --         --          --          --          --    4,000,000
 Loan repayments........    (33,852)        --          --          --          --     (250,000)
 Capital element of
  finance lease
  repayments............         --         --     (37,349)   (440,386)    (56,779)    (242,470)
                          ---------  ---------  ----------  ----------  ----------   ----------
                            252,174  1,989,216   4,657,131   2,311,761     (56,779)   7,104,572
(Decrease)/increase in
 cash in the period.....     51,507  1,544,882    (291,979)    581,801  (4,755,662)  (2,217,542)
                          =========  =========  ==========  ==========  ==========   ==========
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                      F-6
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
                NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
 
1. NATURE OF BUSINESS AND ORGANIZATION
 
  Independent Energy Holdings plc and subsidiary undertakings ("the Company")
generates and markets electricity, currently only operating in the United
Kingdom. All amounts throughout this document are stated in pounds sterling
unless otherwise specified.
 
2. BASIS OF PRESENTATION
 
  The consolidated financial statements include Independent Energy Holdings
plc and its wholly-owned subsidiary, Independent Energy UK Limited and the
predecessor companies (International Petroleum Service Company, Eukan Energy
Limited and Elswick Petroleum Limited).
 
  Independent Energy UK Limited ("IEUK") was incorporated in March 1995, and
on 17 April 1995 it acquired by share exchange 100% interests in International
Petroleum Service Company ("IPSCo") a company incorporated in the State of
Delaware, Eukan Energy Limited ("Eukan") a company incorporated in the United
Kingdom and being a 95% owned subsidiary of IPSCo, and Elswick Petroleum
Limited ("Elswick") also incorporated in the United Kingdom. IPSCo, Eukan and
Elswick are subsequently referred to as "the subsidiaries." This acquisition
was effected by the issue of shares in IEUK on the following basis:
 
    (i) 1 share in IEUK for each share in IPSCo
 
    (ii) 28 shares in IEUK for the 5% minority stake in Eukan
 
    (iii) 1 share in IEUK for every 35 shares in Elswick
 
  Following the share exchanges, the reorganization was accounted for under UK
GAAP merger accounting principles, which is substantially the same as the
pooling of interests method of accounting under US GAAP. This method was
adopted due to the common ownership and management control of IEUK and the
subsidiaries since their inception. The accounts of the entities that were
acquired are consolidated in the accompanying financial statements using
historical data, for the accounting periods ending 31 December 1994 and 1995.
All significant intercompany accounts and transactions have been eliminated.
 
  On 1 January 1996, all trade and assets of the subsidiaries were transferred
to IEUK, and the now dormant companies were sold at net asset value.
 
  In March 1996, Independent Energy Holdings plc ("IEH") was incorporated to
float on the Alternative Investment Market in the UK in order to raise funds
for expansion. On 31 May 1996 it acquired by share exchange, a 100% interest
in IEUK. Both the asset transfer and the acquisition of IEUK were accounted
for under UK GAAP acquisition accounting principles, which are substantially
the same as the purchase method of accounting under US GAAP. The accounts of
IEH and IEUK are consolidated in the accompanying financial statements for the
accounting periods ending 30 June 1996 and 1997, following a change in
accounting reference date from 31 December to 30 June. The results for June
30, 1996 therefore show a six month period only.
 
  Under US GAAP, where an entity qualifies for the pooling of interests
accounting method, consolidated financial statements must be prepared on that
basis, reflecting all transactions at historical cost. This differs from UK
GAAP where an entity can choose either accounting method. The consolidated
financial statements prepared under UK GAAP have therefore been reconciled
with the consolidated financial statements prepared under US GAAP for each of
the accounting periods in Notes 29 and 30.
 
3. ACCOUNTING POLICIES
 
  The financial statements are prepared in accordance with generally accepted
accounting principles in the United Kingdom ("UK GAAP"). A summary of the more
important accounting policies, which have been applied consistently, is set
out below.
 
                                      F-7
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  The most significant differences between the accounting principles followed
by the Company and generally accepted accounting principles in the United
States ("US GAAP") are described in Notes 29 and 30.
 
 a) Basis of Accounting
 
  These financial statements are prepared under the historical cost
convention.
 
 b) Development
 
  Expenditure on development of production facilities is capitalized to be
matched with future revenue.
 
  The cost incurred relates to the development of natural gas fields to
facilitate commercial production of proven reserves which are used as the fuel
source for generation plants producing electricity and are included as
intangible assets.
 
  The Company follows the full cost method of accounting for gas properties.
Accordingly, all costs associated with acquisition, exploration, and
development of gas reserves, including directly related overhead costs, are
capitalized. All capitalized costs of gas properties are amortized on the
unit-of-production method using estimates of proved reserves. Investments in
unproved properties and major development projects are not amortized until
proved reserves associated with the projects can be determined or until
impairment occurs. If the results of an assessment indicated that the
properties are impaired, the amount of the impairment is added to the
capitalized costs to be amortized. In addition, the capitalized costs are
subject to a "ceiling test", which basically limits such costs to the
aggregate of the "estimated present value", discounted at a 10 percent
interest rate of future net revenues from proved reserves, based on current
economic and operating conditions, plus the lower of cost or fair market value
of unproved properties.
 
  Sales of proved and unproved properties are accounted for as adjustments of
capitalized costs with no gain or loss recognized, unless such adjustments
would significantly alter the relationship between capitalized costs and
proved reserves of gas, in which case the gain or loss is recognized in
income. Abandonments of properties are accounted for as adjustments of
capitalized costs with no loss recognized.
 
  The Company capitalizes interest on expenditures made in connection with
exploration and development projects not subject to current amortization.
Interest is capitalized only for the period that activities are in progress to
bring these projects to their intended use.
 
 c) Depreciation and Amortization
 
  Tangible fixed assets are written off over their estimated useful lives on a
straight line basis at the following annual rates:
 
    Plant and machinery   5 percent on cost
 
    Office equipment     33 percent on cost
 
  Assets in the course of construction are the generation plants including the
generators, well development and related piping and cable connections which
are depreciated over their estimated useful lives from the date of completion.
 
  Intangible fixed assets are amortized on unit-of-production basis using
estimates of proven resources. The proven resources are determined annually by
third party petroleum consultants.
 
                                      F-8
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  The Company periodically assesses whether any events or changes in
circumstances have occurred that would indicate that the carrying amount of
long-lived assets may not be recoverable.
 
 d) Leasing
 
  Assets acquired under finance leases are capitalized and depreciated over
their estimated useful lives. The interest element of the finance lease rental
payments are charged to the profit and loss account over the life of the
lease.
 
  Rentals payable under operating leases are charged to the profit and loss
account as incurred.
 
 e) Turnover
 
  Turnover (revenue) from the sale of electricity is recognized by the Company
on a monthly basis based on the volume of electricity consumed by its
customers as determined by month-end meter readings and the contract prices
associated with such volume. Customers are billed monthly, generally at a
fixed price for usage.
 
 f) Deferred Energy Cost
 
  The cost of electricity purchased from the Pool fluctuates throughout the
term of sales contracts. The Company recognizes gross profit related to
electricity sales on a pro rata basis throughout the term of sales contracts
based on an estimated gross profit margin for all sales contracts. Pool prices
tend to be higher in the colder months than in the warmer months. The
estimated gross profit margin considers the estimated cost of electricity, the
effects of hedging contracts entered into by the Company to mitigate Pool
price exposure, transmission and distribution costs, commissions and all other
costs of sales in supplying the electricity. The difference between the cash
cost of the electricity and the estimated cost of sales based on the estimated
gross profit margin is accounted for as either an accrual for, or a deferral
of, the cost of electricity and recorded on the balance sheet within current
assets or current liabilities, as the case may be. The Company reconciles the
difference between actual gross profit and estimated gross profit on a
quarterly basis.
 
 g) Foreign Currency Translation
 
  The translation of foreign currency transactions is dealt with as follows:
 
    (i) non-monetary assets and liabilities at the balance sheet date are
  translated at the rate ruling on the date on which the transaction
  occurred;
 
    (ii) monetary assets and liabilities at the balance sheet date are
  translated at the rate ruling at that date;
 
    (iii) transactions regarding turnover and operating expenses occurring
  during the period, settled in sterling, are translated at the rate ruling
  on the date on which the transaction occurred; and
 
    (iv) transactions regarding turnover and operating expenses occurring
  during the period, settled in foreign currency, are translated at the
  average rate.
 
(h) Deferred Taxation
 
  Tax deferred or accelerated is accounted for in respect of all material
timing differences to the extent that it is probable that a liability or asset
will be realized. The amount of such tax is based on expected effective tax
rates, and future changes in tax laws and rules are not anticipated for this
purpose.
 
                                      F-9
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 (i) Interim Financial Data
 
  In the opinion of the management of the Company, the accompanying unaudited
financial statements are prepared in accordance with accounting principles
generally accepted in the United Kingdom ("UK GAAP") which differ in certain
respects from US generally accepted accounting principles ("US GAAP"). A
summary of the significant differences is set forth in Notes 29 and 30 to the
Consolidated Financial Statements. The unaudited financial statements contain
all adjustments (consisting of only normal recurring adjustments) necessary to
present fairly the financial position of the Company as of March 31, 1997, and
the results of operations and cash flows for the nine months ended March 31,
1997. The results of operations and cash flows for the nine months ended March
31, 1997, are not necessarily indicative of the results of operations or cash
flows reported for the remainder of fiscal 1997 or any subsequent period.
 
4. DISCONTINUED OPERATIONS
 
  The Company was engaged in the oil and gas services business until March
1994 when the majority of the oil and gas services operational assets were
sold. The activities of this business are disclosed as a discontinued
activity.
 
5. DIRECTORS
 
 Directors' Remuneration
 
<TABLE>
<CAPTION>
                           SIX     YEAR                                           NINE
                          MONTHS   ENDED                                         MONTHS
                          ENDED    JUNE                                           ENDED
                         JUNE 30,   30,         YEAR ENDED JUNE 30, 1997        MARCH 31,
                         -------- ------- ------------------------------------- ---------
                                                                     PENSION
                           1996    1997   SALARY   FEES  BENEFITS CONTRIBUTIONS   1998
                         -------- ------- ------- ------ -------- ------------- ---------
<S>                      <C>      <C>     <C>     <C>    <C>      <C>           <C>
EXECUTIVE DIRECTORS
B. H. Keenan............      --       --      --     --      --         --           --
J. W. Jarrell...........      --       --      --     --      --         --           --
J. L. Sulley............  33,343   82,000  66,000     --   6,100      9,900       61,500
W. E. Evans.............   2,120    5,700      --     --   5,700         --        4,275
Dr. R. E. Jones.........   7,864   74,800  60,000     --   5,800      9,000       56,100
NON-EXECUTIVE DIRECTORS
R. W. Deakin............  13,900   10,600      -- 10,600      --         --        7,300
D. O. May...............   7,776   11,249      -- 11,249      --         --        7,300
                          ------  ------- ------- ------  ------     ------      -------
                          65,003  184,349 126,000 21,849  17,600     18,900      136,475
                          ======  ======= ======= ======  ======     ======      =======
</TABLE>
 
  The directors received no remuneration in the years ended December 31, 1995
and 1994.
 
 Directors Interests in Contracts
 
  The Company has received consultancy services from directors. These
transactions were in the normal course of business and amounted to:
 
<TABLE>
<CAPTION>
                                                        SIX     YEAR     NINE
                                         YEAR ENDED    MONTHS   ENDED   MONTHS
                                        DECEMBER 31,   ENDED    JUNE     ENDED
                                        ------------- JUNE 30,   30,   MARCH 31,
                                         1994   1995    1996    1997     1998
                                        ------ ------ -------- ------- ---------
<S>                                     <C>    <C>    <C>      <C>     <C>
B. H. Keenan...........................     --     --  19,933   40,213  30,212
W. E. Evans............................ 14,521 24,000  22,601   44,983  33,750
J. W. Jarrell..........................     --  1,282  13,269   25,133  18,882
J. L. Sulley...........................     --  3,000      --       --      --
                                        ------ ------  ------  -------  ------
                                        14,521 28,282  55,803  110,329  82,844
                                        ====== ======  ======  =======  ======
</TABLE>
 
                                     F-10
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 Directors' Interests
 
  The beneficial interests of the Directors in the ordinary shares of 1p of
IEH are as follows:
 
<TABLE>
<CAPTION>
                                       DATE OF     JUNE 30,  JUNE 30,  MARCH 31,
                                     APPOINTMENT     1996      1997      1998
                                    -------------- --------- --------- ---------
      <S>                           <C>            <C>       <C>       <C>
      B. H. Keenan................. April 16, 1996 2,380,000 2,382,100 2,358,500
      J. W. Jarrell................ April 16, 1996   180,200   180,300   137,300
      J. L. Sulley................. April 16, 1996    60,000    60,000    60,000
      W. E. Evans.................. April 16, 1996     5,600     5,600     5,600
      Dr. R. E. Jones.............. April 16, 1996    60,000    60,000    60,000
      R. W. Deakin................. April 16, 1996    68,200    68,200    68,200
      D. O. May.................... April 16, 1996    50,000    50,000    50,000
</TABLE>
 
  B. H. Keenan is a beneficial owner of Leeward Investments Limited, a company
which holds 1,742,800 ordinary shares of his total shareholding of 2,382,100
shown above.
 
  The ordinary shares in which R. W. Deakin has interests is held by Southern
Geophysical Pension Fund of which he is a beneficiary.
 
 Directors Interests in Share Options
 
  The Directors interests in share options as of March 31, 1998 are as
follows:
 
<TABLE>
<CAPTION>
                                          NUMBER
                                 EXERCISE   OF
                                  PRICE   SHARES        EXERCISABLE DATES
                                 -------- ------- ------------------------------
      <S>                        <C>      <C>     <C>
      B. H. Keenan..............  31.25p   45,400 Jan. 1, 1997 to Jan. 1, 2001
                                 100.00p  200,000 Oct. 21, 1997 to Apr. 28, 2003
                                 122.50p   50,000 Nov. 5, 2000 to Nov. 5, 2002
      J. W. Jarrell.............  31.25p   22,800 Jan. 1, 1997 to Jan. 1, 2001
                                 100.00p  100,000 Oct. 21, 1997 to Apr. 28, 2003
                                 100.00p  100,000 Jan. 1, 1999 to Jan. 1, 2001
                                 122.50p   50,000 Nov. 5, 2000 to Nov. 5, 2002
      J. L. Sulley..............  50.00p   60,000 Jan. 1, 1997 to Jan 1, 2001
                                 100.00p  300,000 Jan 1, 1999 to Jan 1, 2001
                                 122.50p   50,000 Nov. 5, 2000 to Nov. 5, 2002
      W. E. Evans...............   1.00p  295,200 May 28, 1996 to Jan. 1, 2001
                                 100.00p  150,000 Jan 1, 1999 to Jan. 1, 2001
                                 122.50p   50,000 Nov. 5, 2000 to Nov. 5, 2002
      R. E. Jones............... 100.00p  300,000 Jan 1, 1999 to Jan. 1, 2001
                                 122.50p   50,000 Nov. 5, 2000 to Nov. 5, 2002
      D. O. May................. 100.00p   50,000 Jan. 1, 1997 to Jan. 1, 2001
                                 122.50p   15,000 Nov. 5, 2000 to Nov. 5, 2002
      R. W. Deakin.............. 100.00p   50,000 Jan. 1, 1997 to Jan. 1, 2001
</TABLE>
 
 
                                     F-11
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 
  No granted options have been exercised nor have any expired.
 
6. EMPLOYEES
 
  (a) Employment costs (including executive directors) consist of:
 
<TABLE>
<CAPTION>
                                                                          NINE
                                       YEAR ENDED                YEAR    MONTHS
                                       DECEMBER 31   SIX MONTHS  ENDED   ENDED
                                       ------------  ENDED JUNE JUNE 30 MARCH 31
                                       1994   1995    30 1996    1997     1998
                                       -----  -----  ---------- ------- --------
      <S>                              <C>    <C>    <C>        <C>     <C>
      Salaries and wages..............    --     --   130,013   503,386 598,126
      Social security costs...........    --     --    13,058    49,948  56,917
      Other pension costs.............    --     --    17,363    66,216  74,028
                                       -----  -----   -------   ------- -------
                                          --     --   160,434   619,550 729,071
                                       =====  =====   =======   ======= =======
</TABLE>
 
  (b) The average number employed during the periods were:
 
<TABLE>
<CAPTION>
                                                                  NINE
                               YEAR ENDED                YEAR    MONTHS
                               DECEMBER 31   SIX MONTHS  ENDED   ENDED
                               ------------  ENDED JUNE JUNE 30 MARCH 31
                               1994   1995    30 1996    1997     1998
                               -----  -----  ---------- ------- --------
      <S>                      <C>    <C>    <C>        <C>     <C>
      Administration and
       management.............     8      6       1         2       3
      Marketing and
       development............    --     --       8        13      21
                               -----  -----     ---       ---     ---
                                   8      6       9        15      24
                               =====  =====     ===       ===     ===
</TABLE>
 
7. INTEREST RECEIVABLE AND PAYABLE AND SIMILAR INCOME AND EXPENSE
 
<TABLE>
<CAPTION>
                               YEAR ENDED              YEAR   NINE MONTHS ENDED
                              DECEMBER 31  SIX MONTHS  ENDED       MARCH 31
                              ------------ ENDED JUNE JUNE 30 ------------------
                              1994   1995   30 1996    1997      1997      1998
                              ----- ------ ---------- ------- ----------- ------
                                                              (UNAUDITED)
 <S>                          <C>   <C>    <C>        <C>     <C>         <C>
 (a) INTEREST RECEIVABLE AND
  SIMILAR INCOME:
  Interest receivable.......  4,081 24,029   41,724   186,431   155,336   78,452
  Gain on currency conver-
  sion......................     --     --   23,693        --        --    3,035
  Other.....................     --     --       --     2,640     1,440    3,085
                              ----- ------   ------   -------   -------   ------
                              4,081 24,029   65,417   189,071   156,776   84,572
                              ===== ======   ======   =======   =======   ======
</TABLE>
 
                                      F-12
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
<TABLE>
<CAPTION>
                            YEAR ENDED                YEAR    NINE MONTHS ENDED
                            DECEMBER 31   SIX MONTHS  ENDED     MARCH 31 1998
                            ------------  ENDED JUNE JUNE 30 -------------------
                            1994   1995    30 1996    1997      1997      1998
                            -----  -----  ---------- ------- ----------- -------
                                                             (UNAUDITED)
<S>                         <C>    <C>    <C>        <C>     <C>         <C>
(b) INTEREST PAYABLE AND
 SIMILAR EXPENSE:
 Interest payable on
  loans...................     --     --      --      70,417    70,968   145,379
 Interest--other..........    806     --      --      10,445        --    13,596
 Loss on currency
  conversion..............     --     --      --      39,535    40,999        --
                            -----  -----     ---     -------   -------   -------
                              806     --      --     120,397   111,967   158,975
                            =====  =====     ===     =======   =======   =======
</TABLE>
 
8. PROFIT (LOSS) ON ORDINARY ACTIVITIES BEFORE TAXATION IS STATED AFTER
 CHARGING:
 
<TABLE>
<CAPTION>
                             YEAR ENDED              YEAR    NINE MONTHS ENDED
                            DECEMBER 31  SIX MONTHS  ENDED     MARCH 31 1998
                            ------------ ENDED JUNE JUNE 30 -------------------
                             1994  1995   30 1996    1997      1997      1998
                            ------ ----- ---------- ------- ----------- -------
                                                            (UNAUDITED)
<S>                         <C>    <C>   <C>        <C>     <C>         <C>
Amortization...............     --    --       --    37,692   28,269    138,057
Depreciation............... 39,674 2,858    5,681   104,158   69,030    163,551
Auditors' remuneration--
 audit fee.................  1,900 4,500    9,000    10,500    9,000     15,000
Auditors' remuneration--
 other.....................    275    --       --     3,565    1,255      7,000
Operating lease rentals....     --    --   28,630   109,039   82,790     86,396
</TABLE>
 
9. EXCEPTIONAL ITEMS
 
<TABLE>
<CAPTION>
                                YEAR ENDED              YEAR     NINE MONTHS
                               DECEMBER 31  SIX MONTHS  ENDED   ENDED MARCH 31
                               ------------ ENDED JUNE JUNE 30 ----------------
                                1994   1995  30 1996    1997      1997     1998
                               ------- ---- ---------- ------- ----------- ----
                                                               (UNAUDITED)
<S>                            <C>     <C>  <C>        <C>     <C>         <C>
Profit on sale of fixed
 assets....................... 164,858  --         --     --        --      --
Discounts on early repayment
 of loan......................   3,333  --         --     --        --      --
Impairment Loss...............      --  --   (460,983)    --        --      --
                               ------- ---   --------    ---       ---     ---
                               168,191  --   (460,983)    --        --      --
                               ======= ===   ========    ===       ===     ===
</TABLE>
 
  The impairment loss arose out of a project to refurbish a drilling rig for
the Company's use in developing the gas licenses. The Company made the
decision to abandon this product due to the relatively high refurbishing cost.
The drilling rig carrying cost was adjusted to the estimated salvage value.
The drilling rig is presently owned by the Company and the Company plans to
sell the rig.
 
10. EARNINGS PER SHARE
 
  Basic earnings (losses) per share is based on the profit (loss) after
taxation for the periods using weighted average number of ordinary shares in
issue, for 1998--16,967,802; 1997--13,129,914; 1996--8,981,076; 1995--33,641;
and 1994--31,314. The effect of outstanding stock options and warrants is not
shown as it is antidilutive.
 
  Nine months ended March 31, 1997 (unaudited) basic losses per share is based
on the weighted average number of ordinary shares in issue of 13,124,800.
 
  No dividend is proposed.
 
                                     F-13
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
11. FIXED ASSETS--INTANGIBLE
 
  Intangible fixed assets are the expenditures related to the acquisition and
development of natural gas fields including the applicable interest and
overhead costs. The gas produced is used to fuel the generation plants
producing electricity and not sold as natural gas. The cost is amortized over
the estimated productive life of the producing property based on proven
reserves. The movement in the account during the periods were:
 
<TABLE>
<CAPTION>
                                                        JUNE 30,
                                       DECEMBER 31, ----------------- MARCH 31,
                                           1995      1996     1997      1998
                                       ------------ ------- --------- ---------
<S>                                    <C>          <C>     <C>       <C>
Cost
  Beginning of period.................   341,157    657,757   897,184 1,582,381
  Additions...........................   316,600    239,427   685,197   536,938
  Transfer from fixed assets--
   tangible...........................        --         --        -- 1,285,367
                                         -------    ------- --------- ---------
  End of Period.......................   657,757    897,184 1,582,381 3,404,686
                                         =======    ======= ========= =========
Accumulated amortization
  Beginning of period.................        --         --        --    37,692
  Charge for the period...............        --         --    37,692   138,057
                                         -------    ------- --------- ---------
  End of Period.......................        --         --    37,692   175,749
                                         =======    ======= ========= =========
Net book value end of period..........   657,757    897,184 1,544,689 3,228,937
                                         =======    ======= ========= =========
</TABLE>
 
  No interest was capitalized in intangible cost.
 
                                     F-14
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
12. FIXED ASSETS--TANGIBLE
 
<TABLE>
<CAPTION>
                                              ASSETS IN
                                              THE COURSE
                                    OFFICE        OF      PLANT AND
                                   EQUIPMENT CONSTRUCTION EQUIPMENT    TOTAL
                                   --------- ------------ ---------  ----------
<S>                                <C>       <C>          <C>        <C>
COST
  At January 1, 1995..............    4,263      637,394     15,748     657,405
  Additions.......................       --       56,343         --      56,343
                                    -------   ----------  ---------  ----------
  At December 31, 1995............    4,263      693,737     15,748     713,748
  Additions.......................   55,372      863,500         --     918,872
  Transfers.......................       --       15,748    (15,748)         --
  Impairment adjustment...........       --     (463,084)        --    (463,084)
  Disposals.......................       --       (7,339)        --      (7,339)
                                    -------   ----------  ---------  ----------
  At June 30, 1996................   59,635    1,102,562         --   1,162,197
  Additions.......................   55,788    7,396,701         --   7,452,489
  Transfers.......................       --     (972,059)   972,059          --
                                    -------   ----------  ---------  ----------
  At June 30, 1997................  115,423    7,527,204    972,059   8,614,686
  Additions.......................  164,902   10,458,955      9,138  10,632,995
  Transfers.......................       --   (7,292,051) 6,006,684  (1,285,367)
                                    -------   ----------  ---------  ----------
  At March 31, 1998...............  280,325   10,694,108  6,987,881  17,962,314
                                    =======   ==========  =========  ==========
ACCUMULATED DEPRECIATION
  At January 1, 1995..............      457           --      2,997       3,454
  Charge for the year.............      609           --      2,249       2,858
                                    -------   ----------  ---------  ----------
  At December 31, 1995............    1,066           --      5,246       6,312
  Charge for the period...........    5,681           --         --       5,681
  Disposals.......................       --           --     (3,145)     (3,145)
  Impairment adjustment...........       --           --     (2,101)     (2,101)
                                    -------   ----------  ---------  ----------
  At June 30, 1996................    6,747           --         --       6,747
  Charge for the year.............   29,885           --     74,273     104,158
                                    -------   ----------  ---------  ----------
  At June 30, 1997................   36,632           --     74,273     110,905
  Charge for the Period...........   39,502           --    124,049     163,551
                                    -------   ----------  ---------  ----------
  At March 31, 1998...............   76,134           --    198,322     274,456
                                    =======   ==========  =========  ==========
NET BOOK VALUE
  At January 1, 1995..............    3,806      637,394     12,751     653,951
                                    =======   ==========  =========  ==========
  At December 31, 1995............    3,197      693,737     10,502     707,436
                                    =======   ==========  =========  ==========
  At June 30, 1996................   52,888    1,102,562         --   1,155,450
                                    =======   ==========  =========  ==========
  At June 30, 1997................   78,791    7,527,204    897,786   8,503,781
                                    =======   ==========  =========  ==========
  At March 31, 1998...............  204,191   10,694,108  6,789,559  17,687,858
                                    =======   ==========  =========  ==========
</TABLE>
 
  Interest was capitalized during the year ending December 31, 1995
((Pounds)5,494), year ending June 30, 1997 ((Pounds)33,672) and nine months
ending March 31, 1998 ((Pounds)591,435).
 
  Assets in the course of construction includes leased assets totaling
(Pounds)4,383,327 and (Pounds)7,048,827 at June 30, 1997 and March 31, 1998
respectively.
 
  Plant and equipment includes leased assets totaling (Pounds)946,100 at June
30, 1997 and March 31, 1998.
 
                                     F-15
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 Capital Commitments
 
  The Company has capital commitments of:
 
<TABLE>
<CAPTION>
                                                        JUNE 30,
                                      DECEMBER 31, ------------------- MARCH 31,
                                          1995       1996      1997      1998
                                      ------------ --------- --------- ---------
<S>                                   <C>          <C>       <C>       <C>
Authorized but not contracted........        --           -- 5,317,000 5,000,000
Contracted but not provided..........   450,000       47,920        --    89,000
                                        =======    ========= ========= =========
 
13. FIXED ASSETS--INVESTMENTS
 
<CAPTION>
                                                        JUNE 30,
                                      DECEMBER 31, ------------------- MARCH 31,
                                          1995       1996      1997      1998
                                      ------------ --------- --------- ---------
<S>                                   <C>          <C>       <C>       <C>
Commercial paper.....................        --    4,300,154        --        --
                                        =======    ========= ========= =========
</TABLE>
 
  Investments were made in commercial paper issued by "blue chip" companies in
order to safeguard assets whilst maintaining flexibility yet maximizing
returns in the six months ended June 30, 1996.
 
14. DEBTORS
 
<TABLE>
<CAPTION>
                                                         JUNE 30,
                                        DECEMBER 31, ----------------- MARCH 31,
                                            1995      1996     1997      1998
                                        ------------ ------- --------- ---------
<S>                                     <C>          <C>     <C>       <C>
Trade Debtors (Note 15)................     5,524     80,396 2,930,964 5,268,581
Security Deposits (Note 15)............        --         -- 1,110,744        --
Sundry Debtors.........................        --         --   178,012   525,685
Other taxation and social security.....    35,524    178,634   183,242   982,484
Prepayments and accrued income.........    13,640     42,018   477,498 2,460,133
                                           ------    ------- --------- ---------
                                           54,688    301,048 4,880,460 9,236,883
                                           ======    ======= ========= =========
</TABLE>
 
15. CREDITORS: AMOUNTS FALLING DUE WITHIN ONE YEAR
 
<TABLE>
<CAPTION>
                                                       JUNE 30,
                                      DECEMBER 31, ----------------- MARCH 31,
                                          1995      1996     1997       1998
                                      ------------ ------- --------- ----------
<S>                                   <C>          <C>     <C>       <C>
Trade Creditors......................    55,958    110,682 1,096,051  2,642,306
Bank overdraft facility..............        --         --        --  1,286,781
Trade debtor financing...............        --         --   648,247         --
Other taxation and social security...       144     29,760    20,584     32,567
Corporation tax......................        --         --        --         --
Financing due within one year (Note
 16).................................        --     78,539   313,767  2,264,730
Accruals and deferred income.........    13,234    158,832 1,877,792  4,635,329
                                         ------    ------- --------- ----------
                                         69,336    377,813 3,956,441 10,861,713
                                         ======    ======= ========= ==========
</TABLE>
 
  The Company has working capital facilities available through its bank. At
March 31, 1998 these facilities consisted of a line of credit of
(Pounds)4,000,000 (none utilized); (Pounds)2,500,000 overdraft facility
((Pounds)1,286,781 utilized) and letter of credit to secure energy purchase
commitments and contract for differences to secure energy pricing
((Pounds)6,500,000 issued). These facilities are secured by a debenture on all
Company assets other than assets subject to other security agreements.
 
                                     F-16
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  At June 30, 1997 there was a balance outstanding of (Pounds)648,247 under a
similar debtor financing facility which was replaced in 1998 by the above
facilities.
 
16. CREDITORS: AMOUNTS FALLING DUE AFTER MORE THAN ONE YEAR
 
<TABLE>
<CAPTION>
                                                    DUE    DUE BETWEEN DUE AFTER
                                                  WITHIN   TWO & FIVE    FIVE
                                        TOTAL    ONE YEAR     YEARS      YEARS
                                      ---------- --------- ----------- ---------
<S>                                   <C>        <C>       <C>         <C>
DECEMBER 31, 1995....................         --        --         --         --
                                      ========== =========  =========  =========
JUNE 30, 1996
Finance lease--Elswick...............    908,751    78,539    830,212         --
                                      ========== =========  =========  =========
JUNE 30, 1997
Finance lease--Elswick...............    775,198    79,422    695,776         --
Finance lease--five generators.......  4,076,494   234,345  2,327,533  1,514,616
Unsecured loan notes.................  1,400,000        --         --  1,400,000
                                      ---------- ---------  ---------  ---------
                                       6,251,692   313,767  3,023,309  2,914,616
                                      ========== =========  =========  =========
MARCH 31, 1998
Construction loan....................  4,750,000 1,000,000  3,750,000         --
Finance lease--Elswick...............    711,940    83,811    628,129         --
Finance lease--five generators.......  3,960,671   490,918  2,485,517    984,236
Finance lease--three generators......  2,597,822   690,001  1,542,688    365,133
Unsecured loan notes.................  1,400,000        --  1,400,000         --
                                      ---------- ---------  ---------  ---------
                                      13,420,433 2,264,730  9,806,334  1,349,369
                                      ========== =========  =========  =========
</TABLE>
 
  The finance lease for Elswick was executed on June 20, 1996 for US
$1,466,455. The lease is payable in quarterly payments of US $57,891. The
lease is secured by the generation assets located at the Elswick site. The
initial term is five years and can be extended an additional five years under
similar terms. The Company has the option to purchase the equipment after the
first five years for 50% of the original cost of the equipment or after 10
years for US $1.00.
 
  The finance lease covering five 2,000 KW natural gas generator systems was
executed on June 17, 1997 for financing of (Pounds)4,383,327. The lease is
payable in 6 monthly payments of (Pounds)31,423 commencing 23 July 1997 and
then 78 monthly payments of (Pounds)69,734. The primary term of 7 years can be
extended indefinitely for an annual rent of (Pounds)10,958.
 
  The Company entered into a finance lease covering three 2,000 KW natural gas
generator systems on October 30, 1997, for financing of (Pounds)2,665,500. The
lease is payable in quarterly payments commencing January 31, 1998 in varying
amounts. The primary term of six years can be extended by the Company
indefinitely for an annual rent of (Pounds)6,664.
 
  The unsecured Loan Notes were issued by IEH in June 1997. The Loan Notes are
repayable in full at December 31, 2002. Interest at 10 percent is payable
quarterly commencing June 30, 1997.
 
  The Company entered into a Credit Agreement on September 5, 1997, with
Barclays Bank PLC. The Credit Agreement provides a revolving construction
facility of up to (Pounds)5,000,000 for five years with repayment in quarterly
payments of (Pounds)250,000 commencing March 31, 1998. The Credit Agreement is
secured by a debenture on all Company assets other than assets subject to
other security agreements. The interest rate is based on the London Inter-bank
rate and is currently 10.2%. At March 31, 1998 there was a balance outstanding
under the construction facility of (Pounds)4,750,000.
 
                                     F-17
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
17. PROVISIONS FOR LIABILITIES AND CHARGES
 
 Deferred taxation
 
  No provisions have been made for deferred taxation in the periods up to
March 31, 1998.
 
<TABLE>
<CAPTION>
                                                        JUNE 30,
                                       DECEMBER 31, -----------------   MARCH
                                           1995      1996      1997    31, 1998
                                       ------------ -------  --------  --------
<S>                                    <C>          <C>      <C>       <C>
Capital Allowances....................       --      65,490   464,721   955,279
Other timing differences..............       --          --    (5,003)   (5,003)
Losses offset.........................       --     (65,490) (459,718) (950,276)
                                           ----     -------  --------  --------
                                             --          --        --        --
                                           ====     =======  ========  ========
</TABLE>
 
  At March 31, 1998 the Company had accumulated losses of approximately
(Pounds)8,300,000 to be relieved in the future, of which approximately
(Pounds)2,600,000 have been used to offset the above deferred tax liability.
There is no time limitation on using the accumulated losses for UK tax
purposes.
 
18. SHARE CAPITAL
 
 a) Nine months ended March 31, 1998
 
<TABLE>
<S>                                                                      <C>
AUTHORIZED:
28,000,000 ordinary shares of 1p each................................... 280,000
</TABLE>
 
  In October 1997 the Authorized shares were increased to 28,000,000.
 
<TABLE>
<S>                                                                      <C>
ISSUED AND FULLY PAID--ORDINARY SHARES OF 1p EACH
As at June 30, 1997..................................................... 149,914
Issued in the nine month period.........................................  28,016
                                                                         -------
As at March 31, 1998.................................................... 177,930
                                                                         =======
</TABLE>
 
  In September 1997 2,631,579 ordinary shares were issued to raise equity and
in January to March 1998 170,000 ordinary shares were issued for exercise of
stock options.
 
 b) Year ended June 30, 1997
 
<TABLE>
<S>                                                                      <C>
AUTHORIZED:
20,000,000 ordinary shares of 1p each................................... 200,000
ISSUED AND FULLY PAID--ORDINARY SHARES OF 1p EACH
As at June 30, 1996..................................................... 131,248
Issued in the year......................................................  18,666
                                                                         -------
As at June 30, 1997..................................................... 149,914
                                                                         =======
</TABLE>
 
  In June 1997 1,866,648 ordinary shares of 1p each were issued to private
investors.
 
 c) Six months ended June 30, 1996
 
<TABLE>
<S>                                                                      <C>
AUTHORIZED:
20,000,000 ordinary shares of 1p each................................... 200,000
                                                                         =======
</TABLE>
 
 
                                     F-18
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  IEH was incorporated on March 12, 1996 with share capital of 100,000
(Pounds)1 ordinary shares. On May 21, 1996 the ordinary shares were sub-
divided into shares of 1p each and a further 10,000,000 ordinary shares were
authorized to increase the share capital to (Pounds)200,000.
 
<TABLE>
<S>                                                                      <C>
ISSUED AND FULLY PAID
13,124,800 ordinary shares of 1p each..................................  131,248
                                                                         =======
</TABLE>
 
  Two shares of (Pounds)1 each (now 200 shares of 1p each) were issued on
formation of IEH 8,124,600 shares of 1p each were issued to acquire IEUK,
1,772,524 ordinary shares of 1p each were issued to US private investors, and
3,227,476 ordinary shares of 1p each were issued to investors on The
Alternative Investment Market.
 
 d) Year ended December 31, 1995
 
<TABLE>
<S>                                                                    <C>
AUTHORIZED
1,000,000 ordinary shares of (Pounds)1 each........................... 1,000,000
                                                                       =========
</TABLE>
 
  IEUK was incorporated on March 15, 1995, with share capital of 1,000
(Pounds)1 ordinary shares. On 6 April 1995 the authorized share capital was
increased to (Pounds)1,000,000.
 
<TABLE>
<S>                                                                       <C>
ISSUED AND FULLY PAID
40,623 ordinary shares of (Pounds)1 each................................. 40,623
                                                                          ======
</TABLE>
 
  IEUK acquired through a merger, effective April 17, 1995, IPSCo, Eukan (a
subsidiary of IPSCo) and Elswick. This merger, including the acquisition of a
minority interest, resulted in the issue of 21,625 ordinary shares of
(Pounds)1 each for a total consideration of (Pounds)21,625, allocated as
follows:
 
  Issue of 17,300 ordinary shares of (Pounds)1 each to acquire the entire
  ordinary share capital of IPSCo.
 
  Issue of 4,297 ordinary shares of (Pounds)1 each to acquire the entire
  ordinary share capital of Elswick.
 
  Issue of 28 ordinary shares of (Pounds)1 each to acquire the 5% minority
  interest in Eukan Energy Limited, the remaining 95% being owned by IPSCo.
 
  In conjunction with the merger, certain loan and trade creditors of Eukan
agreed to convert their debt into equity in IEUK which resulted in the issue
of 9,689 ordinary shares of (Pounds)1 each for a total consideration of
(Pounds)636,520.
 
  In September 1995, a share offer resulted in the issue of 9,309 ordinary
shares of (Pounds)1 each for a total consideration of (Pounds)1,906,621.
 
                                     F-19
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
19. RESERVES AND OTHER SHAREHOLDERS' FUNDS
 
  As detailed in Note 2 the reporting entity changes from IEU Ltd to IEH plc
in the six months ended June 30, 1996. The closing reserves at December 31,
1995 represent the pre-acquisition reserves on the acquisition of IEU Ltd by
IEH plc and hence has been eliminated by acquisition accounting.
 
<TABLE>
<CAPTION>
                                                                    PROFIT AND
                                                SHARE     CAPITAL      LOSS
                                               PREMIUM    RESERVE    ACCOUNT
                                              ----------  --------  ----------
<S>                                           <C>         <C>       <C>
JANUARY 1, 1995.............................      68,493        --     (65,517)
Share premium arising on conversion of debt
 to equity..................................     626,831        --          --
Share premium arising on shares issued in
 period.....................................   1,897,312        --          --
Total called up share capital and share pre-
 mium of merger companies...................     (68,493)  844,722          --
Issue of IEUK shares in exchange for shares
 in Elswick, Eukan and IPSCo................          --   (21,625)         --
Elimination of Eukan investment acquired
 from IPSCo.................................          --  (279,151)         --
Retained loss for the year..................          --        --     (59,467)
                                              ----------  --------  ----------
AT DECEMBER 31, 1995........................   2,524,143   543,946    (124,984)
                                              ==========  ========  ==========
Share premium arising on share exchange for
 the acquisition of IEUK....................   2,066,523        --          --
Share premium arising on private US place-
 ment.......................................   2,946,858        --          --
Share premium arising on the Alternative
 Investment Market listing..................   1,697,620        --          --
Retained loss for the period................          --        --     (55,234)*
                                              ----------  --------  ----------
AT JUNE 30, 1996............................   6,711,001        --     (55,234)
Share premium arising on private placement..   1,333,481        --          --
Retained loss for the year..................          --        --  (1,181,593)
                                              ----------  --------  ----------
AT JUNE 30, 1997............................   8,044,482        --  (1,236,827)
Share premium arising on private placement..   2,400,726        --          --
Share premium arising on exercise of stock
 options....................................     168,300        --          --
Retained loss for the period................          --        --    (426,105)
                                              ----------  --------  ----------
AT MARCH 31, 1998...........................  10,613,508        --  (1,662,932)
                                              ==========  ========  ==========
</TABLE>
- --------
* This amount represents the loss from the date of acquisition of June 1,
  1996, due to application of acquisition accounting.
 
20. RECONCILIATION OF MOVEMENTS IN SHAREHOLDERS' FUNDS
 
<TABLE>
<CAPTION>
                                                     JUNE 30,
                                  DECEMBER 31, ---------------------  MARCH 31,
                                      1995       1996        1997       1998
                                  ------------ ---------  ----------  ---------
<S>                               <C>          <C>        <C>         <C>
New share capital subscribed for
 by private placement (net of
 issue costs)...................   1,906,621   2,964,584   1,352,147  2,427,042
Conversion of debt to equity....     636,520          --          --         --
IPSCo share warrants............      32,101          --          --         --
Exercise of stock options.......          --          --          --    170,000
New share capital subscribed for
 by listing on the Alternative
 Investment Market..............          --   1,729,896          --         --
                                   ---------   ---------  ----------  ---------
Other (losses)/gains............   2,575,242   4,694,480   1,352,147  2,597,042
Profit/(loss) on ordinary activ-
 ities after tax................     (59,467)   (891,193) (1,181,593)  (426,105)
Shareholders' funds at beginning
 of period                           467,953   2,983,728   6,787,015  6,957,569
                                   ---------   ---------  ----------  ---------
Shareholders' funds at end of
 period.........................   2,983,728   6,787,015   6,957,569  9,128,506
                                   =========   =========  ==========  =========
</TABLE>
 
 
                                     F-20
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
21. SHARE OPTION PLAN AND SHARE WARRANTS
 
  The Company has a share option plan which provides for grants of options to
acquire the Company's shares to its key employees. Under the share option plan
the total number of ordinary share options that may be granted is 3,533,400
ordinary shares of 1p each.
 
  IEUK established a share option plan in April 1995. The options granted
under this plan were surrendered on May 31, 1996 when the Company became a
wholly owned subsidiary of IEH. IEH granted fresh options in their unapproved
option scheme on the basis of 200 ordinary shares of 1p each for every
(Pounds)1 ordinary share in IEUK.
 
  A summary of the share options granted and the changes during the periods is
presented below. The share options granted include 250,000 share options in
aggregate to the Company's nominated broker and financial advisor granted on
May 31, 1996, of which 170,000 share options were exercised in January to
March 1998 at an exercise price of 100 pence.
 
<TABLE>
<CAPTION>
                                                          WEIGHTED
                                                          AVERAGE     NUMBER OF
                                                       EXERCISE PRICE  SHARES
                                                       -------------- ---------
<S>                                                    <C>            <C>
At January 1, 1995....................................             --        --
Granted--April 1995................................... (Pounds)117.61     6,042
                                                       -------------- ---------
At December 31, 1995.................................. (Pounds)117.61     6,042
Granted--May 1996..................................... (Pounds)200.00     7,850
                                                       -------------- ---------
                                                       (Pounds)164.17    13,892
Surrendered May 31, 1996..............................             --   (13,892)
                                                       -------------- ---------
Granted May 31, 1996..................................            82p 2,778,400
                                                       -------------- ---------
At June 30, 1996 and June 30, 1997....................            82p 2,778,400
Granted--November 5, 1997.............................         122.5p   925,000
Exercised in the period...............................         100.0p  (170,000)
                                                       -------------- ---------
AT MARCH 31, 1998.....................................            92p 3,533,400
                                                       ============== =========
</TABLE>
 
  The following table summarizes information regarding share options at March
31, 1998:
 
<TABLE>
<CAPTION>
                                                      WEIGHTED
                                         NUMBER        AVERAGE        NUMBER
                                     OUTSTANDING AT   REMAINING   EXERCISABLE AT
           EXERCISE PRICE            MARCH 31, 1998 CONTRACT LIFE MARCH 31, 1998
           --------------            -------------- ------------- --------------
<S>                                  <C>            <C>           <C>
    1p..............................     295,200        2.75          295,200
31.25p..............................     253,200        2.75          253,200
   50p..............................      60,000        2.75           60,000
  100p..............................   2,000,000        3.55          780,000
122.5p..............................     925,000        4.72               --
                                       ---------        ----        ---------
                                       3,533,400        3.71        1,388,400
                                       =========        ====        =========
</TABLE>
 
  The option price range at each period end was as follows:
 
<TABLE>
<S>                                                      <C>
December 31, 1994.......................................                   --
December 31, 1995....................................... (Pounds) to (Pounds)200
June 30, 1996........................................... 1p to 100p
June 30, 1997........................................... 1p to 100p
March 31, 1998.......................................... 1p to 122.5p
</TABLE>
 
 
                                     F-21
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  Details of the director's options which are included in the above figures
are shown in Note 5 to the financial statements.
 
STOCK WARRANTS
 
  On June 30, 1997 stock warrants for 140,000 ordinary shares were granted in
association with the issue of Loan Notes of (Pounds)1,400,000; the warrants
are exercisable at a price of 75p at anytime until their expiration on March
31, 2002.
 
  During 1995 stock warrants for 2,500 shares issued in 1992 to the founders
and original directors of IPSCo were exercised at a price of US $20.00 per
share ((Pounds)12.84) or total of (Pounds)32,101.
 
22. EMPLOYEE BONUS PLAN
 
  The Company has a Bonus Pool, which is administered by the Remuneration
Committee, and based on an amount equal to:
 
    (i) 10 percent of pre-tax net profit for the years ended June 30, 1996,
  1997 and 1998;
 
    (ii) 10 percent of pre-tax net profit in excess of a return on the
  Company's equity of 25 percent, in subsequent years.
 
  No bonuses have been earned or paid during any of the periods presented.
 
23. COMPANY UNDERTAKINGS
 
  Principal Operating Subsidiary at March 31, 1998 is:
 
<TABLE>
<CAPTION>
                                               COUNTRY OF        PERCENTAGE
                    NAME                      INCORPORATION    SHAREHOLDINGS
                    ----                      ------------- --------------------
<S>                                           <C>           <C>
Independent Energy UK Limited................    England    Ordinary shares 100%
</TABLE>
 
  The following subsidiaries do not conduct any operations:
 
<TABLE>
<CAPTION>
                                               COUNTRY OF        PERCENTAGE
                    NAME                      INCORPORATION    SHAREHOLDINGS
                    ----                      ------------- --------------------
<S>                                           <C>           <C>
I E (Caythorpe) Limited......................    England    Ordinary shares 100%
Independent Energy Generation Limited........    England    Ordinary shares 100%
Independent Energy Services Limited..........    England    Ordinary shares 100%
Independent Energy Limited...................    England    Ordinary shares 100%
Independent Energy Resources Limited.........    England    Ordinary shares 100%
</TABLE>
 
24. OBLIGATIONS UNDER OPERATING LEASES
 
  The Company has operating lease rental commitments for agreements that
expire between two and five years, for which:
 
<TABLE>
<CAPTION>
                                                     JUNE 30, JUNE 30, MARCH 31,
                                                       1996     1997     1998
                                                     -------- -------- ---------
<S>                                                  <C>      <C>      <C>
Amount due within 1 year--Land & Buildings..........  31,331   54,542   187,837
           --Other..................................      --   50,642    61,561
</TABLE>
 
  There were no operating lease rental commitments for the year ended December
31, 1995.
 
                                     F-22
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
25. FINANCIAL INSTRUMENTS
 
  The Company's business involves entering into fixed price contracts to
supply electricity to its customers. The electricity to supply the customers
under these contracts is primarily purchased from the Pool at fluctuating spot
market prices. The Company is exposed to two principal risks associated with
such contracts: "load shape" risk (the risk associated with a shift in the
customer's usage pattern, including absolute amounts demanded and timing of
amounts demanded) and "purchase" price risk (the cost of purchased electricity
relative to the price received from the supply customer). The Company employs
risk management methods to maximize its return consistent with an acceptable
level of risk. Generally, load shape risk decreases as the Company's portfolio
of supply customers in the supply market increases. The Company hedges
purchase price risk by employing a variety of risk management tools, including
entering into hedging instruments known as contracts for differences (CFDs),
management of its supply contract portfolio, and through the ownership of
generating facilities to produce a portion of its required supply of
electricity. The Company's ability to manage its purchase price risk depends,
in part, on the future availability of properly priced risk management
mechanisms such as CFDs. As part of the Company's risk management practice,
the Company has in the past and continues to enter into CFDs. Generally, CFDs
are contracts between generators and suppliers that have the effect of fixing
the price of electricity for a contracted quantity of electricity over a
specific time period. Differences between the actual price set by the Pool and
the agreed prices give rise to different payments between the parties to the
particular CFD.
 
  As a result of its expected growth in revenue arising from the commencement
of the final phase of deregulation, the Company has adopted a hedging policy
which consists of entering into CFDs and continuing to generate a portion of
its electricity requirements to effectively hedge a significant portion of its
total estimated demand based on effective sales contracts in place at such
time.
 
  The Company enters into CFDs in order to hedge the price risk inherent in
Pool trading. CFDs are agreements between the Company, as a purchaser of
electricity through the Pool, and generators and traders. As at March 31, 1998
the CFD in place covers the period from March 31, 1998, to October 25, 1998.
The CFD has a notional value at March 31, 1998 of (Pounds)13,430,000 for the
remaining volume covered by the contract. The CFD is settled monthly.
 
                                     F-23
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
26. ANALYSIS OF CHANGES IN NET DEBT
 
<TABLE>
<CAPTION>
                               AT BEGINNING               OTHER      AT END OF
                                OF PERIOD   CASH FLOWS   CHANGES      PERIOD
                               ------------ ----------  ----------  -----------
<S>                            <C>          <C>         <C>         <C>
Year Ended December 31, 1995
Cash at bank and in hand.....       88,301   1,544,882          --    1,633,183
Loan due within one year.....     (586,026)    (50,494)    636,520           --
                                ----------  ----------  ----------  -----------
Net Debt.....................     (497,725)  1,494,388     636,520    1,633,183
                                ==========  ==========  ==========  ===========
Six Months Ended June 30,
 1996
Cash at bank and in hand.....    1,633,183    (291,979)         --    1,341,204
Leases due within one year...           --      37,349    (115,888)     (78,539)
Leases due after more than
 one year....................           --    (946,100)    115,888     (830,212)
Current asset investment.....           --   4,300,154          --    4,300,154
                                ----------  ----------  ----------  -----------
Net debt.....................    1,633,183   3,099,424          --    4,732,607
                                ==========  ==========  ==========  ===========
Year Ended June 30, 1997
Cash at bank and in hand.....    1,341,204     581,801          --    1,923,005
Leases due within one year...      (78,539)       (883)   (234,345)    (313,767)
Leases due after more than
 one year....................     (830,212)    441,269  (4,148,982)  (4,537,925)
Loans due after more than one
 year........................           --  (1,400,000)         --   (1,400,000)
Current asset investment.....    4,300,154  (4,300,154)         --           --
                                ----------  ----------  ----------  -----------
Net debt.....................    4,732,607  (4,677,967) (4,383,327)  (4,328,687)
                                ==========  ==========  ==========  ===========
Nine Months Ended March 31,
 1998
Cash at bank and in hand.....    1,923,005    (930,761)         --      992,244
Bank overdraft...............           --  (1,286,781)         --   (1,286,781)
                                ----------  ----------  ----------  -----------
                                 1,923,005  (2,217,542)         --     (294,537)
Leases due within one year...     (313,767)         --    (950,963)  (1,264,730)
Leases due after more than
 one year....................   (4,537,925)    242,470  (1,710,248)  (6,005,703)
Loans due within one year....           --  (1,000,000)         --   (1,000,000)
Loans due after more than one
 year........................   (1,400,000) (3,750,000)         --   (5,150,000)
                                ----------  ----------  ----------  -----------
Net debt.....................   (4,328,687) (6,725,072) (2,661,211) (13,714,970)
                                ==========  ==========  ==========  ===========
</TABLE>
 
                                      F-24
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
27. RECONCILIATION OF NET CASH FLOWS TO MOVEMENT IN NET DEBT
 
<TABLE>
<S>          <C>         <C>
Year Ended
 December
 31, 1995
Increase in
 cash in
 the peri-
 od........   1,544,882
Cash inflow
 from in-
 crease in
 debt and
 lease fi-
 nancing...     (50,494)
Debt capi-
 talized as
 shares....     636,520
             ----------
Movement in
 net debt..                2,130,908
Net debt at
 December
 31, 1994..                 (497,725)
                         -----------
Net debt at
 December
 31, 1995..                1,633,183
                         ===========
Six Months
 Ended June
 30, 1996
Decrease in
 cash in
 the peri-
 od........    (291,979)
Cash inflow
 from in-
 crease in
 debt and
 lease fi-
 nancing...    (908,751)
Cash out-
 flow from
 increase
 in liquid
 resources.   4,300,154
             ----------
Movement in
 net debt..                3,099,424
Net debt at
 December
 31, 1995..                1,633,183
                         -----------
Net debt at
 June 30,
 1996......                4,732,607
                         ===========
Year Ended
 June 30,
 1997
Increase in
 cash in
 the peri-
 od........     581,801
Cash inflow
 from in-
 crease in
 debt and
 lease fi-
 nancing...    (920,079)
Cash inflow
 from de-
 crease in
 liquid re-
 sources...  (4,300,154)
New finance
 leases....  (4,422,862)
             ----------
Movement in
 net debt..               (9,061,294)
Net debt at
 June 30,
 1996......                4,732,607
                         -----------
Net debt at
 June 30,
 1997......               (4,328,687)
                         ===========
Nine Months
 Ended
 March 31,
 1998
Decrease in
 cash in
 the peri-
 od........  (2,217,542)
Cash inflow
 from in-
 crease in
 loan fi-
 nancing...  (4,750,000)
Cash inflow
 from net
 increase
 in lease
 financing.  (2,418,741)
             ----------
Movement in
 net debt..               (9,386,283)
Net debt at
 June 30,
 1997......               (4,328,687)
                         -----------
Net debt at
 March 31,
 1998......              (13,714,970)
                         ===========
</TABLE>
 
28. MAJOR NON-CASH TRANSACTIONS
 
  Detailed below are the major non-cash transactions.
 
 YEAR ENDED DECEMBER 31, 1995
 
  There were no major non-cash transactions in this year, other than reported
elsewhere herein.
 
 SIX MONTHS ENDED JUNE 30, 1996
 
  During the period the Company entered into finance lease arrangements in
respect of assets with a total capital value at the inception of the lease of
(Pounds)946,100.
 
 YEAR ENDED JUNE 30, 1997
 
  During the year the Company entered into finance lease arrangements in
respect of assets with a total capital value at the inception of the lease of
(Pounds)4,383,327.
 
                                     F-25
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 NINE MONTHS ENDED MARCH 31, 1998
 
  During the period the Company entered into finance lease arrangements in
respect of assets with a total capital value at the inception of the lease of
(Pounds)2,665,500.
 
29. SUMMARY OF DIFFERENCES BETWEEN UK AND US GENERALLY ACCEPTED ACCOUNTING
    PRINCIPLES (GAAP)
 
 Financial Statements
 
  The consolidated financial statements are prepared in accordance with
accounting principles generally accepted in the United Kingdom. Such
principles differ in certain respects from US GAAP. A summary of the most
significant differences applicable to the Company is set out below.
 
 Accounting estimates
 
  The preparation of financial statements requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure in conformity with generally accepted accounting
principles of contingent assets and liabilities at the date of the financial
statements and their reported amounts of revenues and expenses during the
reported period. Accounting estimates have been employed in these financial
statements to determine reported amounts, including realizability, useful
lives of assets and income taxes. Actual results could differ from those
estimates.
 
  The principal differences between UK GAAP and US GAAP are disclosed below:
 
  (a) Statement of Operation Differences
 
<TABLE>
<CAPTION>
                                 YEAR ENDED       SIX MONTHS                 NINE MONTHS ENDED
                                DECEMBER 31,        ENDED      YEAR ENDED        MARCH 31,
                               ----------------    JUNE 30,     JUNE 30,    ----------------------
                         NOTE   1994     1995        1996         1997         1997         1998
                         ----  ------   -------   ----------   ----------   -----------   --------
                                                                            (UNAUDITED)
<S>                      <C>   <C>      <C>       <C>          <C>          <C>           <C>
(Loss)/Profit on
 ordinary activities
 after taxation under UK
 GAAP...................       58,687   (59,467)    (891,193)  (1,181,593)    (959,560)   (426,105)
US GAAP Adjustments:
Stock based
 compensation--Employee
 Share Option Scheme      (i)      --        --     (110,715)    (188,095)    (141,070)    (95,604)
                               ------   -------   ----------   ----------   ----------    --------
Total US GAAP
 Adjustments............           --        --     (110,715)    (188,095)    (141,070)    (95,604)
Deferred income taxes     (ii)     --        --           --           --           --          --
                               ------   -------   ----------   ----------   ----------    --------
Net effect of US GAAP
 adjustments............           --        --     (110,715)    (188,095)    (141,070)    (95,604)
                               ------   -------   ----------   ----------   ----------    --------
Net (loss)/profit under
 US GAAP................       58,687   (59,467)  (1,001,908)  (1,369,688)  (1,100,630)   (521,709)
                               ======   =======   ==========   ==========   ==========    ========
Primary (loss) earnings
 per ordinary share un-
 der US GAAP             (iii)  187.4 p  (176.8)p      (11.1)p      (10.4)p       (8.4)p      (3.1)p
                               ======   =======   ==========   ==========   ==========    ========
</TABLE>
 
  (b) Equity Reconciliation
 
<TABLE>
<CAPTION>
                                                      JUNE 30,
                                    DECEMBER 31, --------------------  MARCH 31,
                              NOTE      1995       1996       1997       1998
                              ----  ------------ ---------  ---------  ---------
<S>                           <C>   <C>          <C>        <C>        <C>
Equity under UK GAAP........         2,983,728   6,787,015  6,957,569  9,128,506
Stock based deferred compen-
 sations                       (i)          --    (110,715)  (298,810)  (394,414)
Deferred income taxes         (ii)          --          --         --         --
Acquisition Accounting        (iv)          --          --         --         --
                                     ---------   ---------  ---------  ---------
Net effect of US GAAP ad-
 justments..................                --    (110,715)  (298,810)  (394,414)
                                     ---------   ---------  ---------  ---------
Equity under US GAAP           (v)   2,983,728   6,676,300  6,658,795  8,734,092
                                     =========   =========  =========  =========
</TABLE>
 
 
                                     F-26
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 (i) Employee Share Option Scheme
 
  Under UK GAAP no compensation cost is recognized under Employee Share Option
Schemes. Under US GAAP, compensation for services that are received as
consideration for shares issued through the Employee Share Option Scheme are
recognized as the difference between the quoted market price of the stock at
the measurement date less the amount the employee is required to pay (option
exercise price). Compensation costs, as determined above, are charged to
expense over the vesting period.
 
  The vesting period has been assumed to be the period from the date of grant
of the share option to the date the option first becomes exercisable.
 
  The quoted market price of the stock for the periods ended June 1997 and
June 1996 has been taken from the UK's Alternative Investment Market as at May
31, 1996 being the date that dealings in the shares commenced.
 
  The Company applies APB Opinion No. 25 and related interpretations in
accounting for its stock option plans. Had compensation expenses been
determined as provided in SFAS 123 for stock options using the Black-Sholes
option pricing model, the pro forma effect would have been:
 
<TABLE>
<CAPTION>
                                             JUNE 30,     JUNE 30,     MARCH
                                               1996         1997      31, 1998
                                            ----------   ----------   --------
<S>                                         <C>          <C>          <C>
Net loss applicable to ordinary shares--as
 reported.................................  (1,001,908)  (1,369,688)  (521,709)
Net loss applicable to ordinary shares--
 pro forma................................  (1,207,270)  (1,460,869)  (621,663)
Primary net loss per ordinary share--as
 reported.................................       (11.1)p      (10.4)p     (3.1)p
Primary net loss per ordinary share--pro
 forma....................................       (13.4)p      (11.1)p     (3.7)p
</TABLE>
 
  The fair value of each option grant is calculated using the following
weighted average assumptions.
 
<TABLE>
<CAPTION>
                                                                      SIX MONTHS
                                                                        ENDED
                                                                       JUNE 30,
                                                                         1996
                                                                      ----------
<S>                                                                   <C>
Expected life (years)................................................    3.42
Interest rate........................................................    6.00%
Volatility...........................................................   10.58%
Dividend yield.......................................................    0.00%
</TABLE>
 
 (ii) Deferred Taxation
 
  Under UK GAAP provision is made for deferred tax under the liability method
where in the opinion of the directors it is probable that a tax liability will
become payable within the foreseeable future. This means the full potential
liability is not necessarily provided. Additionally, deferred tax assets
should be recognized only when they are expected to be recoverable within the
foreseeable future without replacement by equivalent debit balances.
 
  Under US GAAP deferred tax is provided in full on the liability basis. Under
the full liability method, deferred tax assets or liabilities are recognized
for differences between the financial and tax basis of assets and liabilities
and for tax loss carry forwards at the statutory rate at each reporting date.
A valuation allowance reduces deferred tax assets when it is more likely than
not that some portion or all of the deferred tax assets will not be realized.
 
  The Company has significant losses amounting to approximately
(Pounds)8,300,000 at March 31, 1998, available to relieve future tax on
profits. There is no time limitation on using these losses for UK tax
purposes.
 
                                     F-27
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  In recording these net tax deferred assets, FAS 109 requires the Company to
determine whether it is "more likely than not" that the Company will realize
such benefits and that all negative and positive evidence be considered (with
more weight given to evidence that is "objective and verifiable") in making
the determination. FAS 109 indicates that forming a conclusion that a
valuation allowance is not needed is difficult when there is negative evidence
such as cumulative losses in recent years.
 
  FAS 109 requires recognition of future tax benefits as deferred tax assets,
subject to a valuation allowance based on the likelihood of realizing such
benefits. Even though management believes the Company will be profitable in
the future, due to the risks associated with the timing of generation
facilities becoming operational and the history of recurring losses,
management believes that it would be prudent to make a valuation allowance to
offset the net deferred tax assets.
 
 (iii) Net (Loss)/Income per share
 
  The differences between UK GAAP and US GAAP for calculating fully diluted
earnings (loss) per share is not shown since the effect is antidilutive.
 
 (iv) Acquisition Accounting
 
  The acquisition in April 1995 by Independent Energy Limited UK of IPSCo,
Eukan and Elswick was accounted for under UK GAAP merger accounting
principles, which is substantially the same as the pooling of interests method
under US GAAP. The transaction under US GAAP should be accounted for using the
purchase method of accounting. The difference in the two accounting methods
has the effect on the Balance Sheet prepared under US GAAP of a
reclassification within shareholders equity of reinstating losses of
(Pounds)84,981 to the profit and loss account and increasing the capital
reserve accounts by the same amount. There is no effect on total shareholders
equity or on the statements of operations or cash flow.
 
  The acquisition by IEH of IEUK on May 31, 1996 was accounted for under UK
GAAP using acquisition accounting principles, which are substantially the same
as the purchase method of accounting under US GAAP. The transaction under US
GAAP should be accounted for in a manner similar to the pooling of interest
method. The difference between the two accounting methods has the effect on
the Balance Sheets prepared under US GAAP of a reclassification within
shareholders equity of reinstating losses of (Pounds)414,979 to the profit and
loss account and increasing the capital stock accounts by the same amount.
There is no effect on total shareholders equity or on the statements of
operations or cash flow.
 
 (v) US GAAP Equity Roll Forward
 
  Shareholders equity roll forward in accordance with US GAAP:
 
<TABLE>
<CAPTION>
                                                   JUNE 30,
                                DECEMBER 31, ----------------------  MARCH 31,
                           NOTE     1995        1996        1997       1998
                           ---- ------------ ----------  ----------  ---------
<S>                        <C>  <C>          <C>         <C>         <C>
Balance at beginning of
 period...................         467,953    2,983,728   6,676,300  6,658,759
Other (losses)/gains......  20   2,575,242    4,694,480   1,352,147  2,597,042
Net (loss)................         (59,467)  (1,001,908) (1,369,688)  (521,709)
                                 ---------   ----------  ----------  ---------
Balance at end of period..       2,983,728    6,676,300   6,658,759  8,734,092
                                 =========   ==========  ==========  =========
</TABLE>
 
30. ADDITIONAL US GAAP DISCLOSURE REQUIREMENTS
 
  (a) Cash Flow Information
 
  The consolidated cash flow statements are prepared in conformity with UK
GAAP areas set out on page F-6. The principal differences between these
statements and cash flow statements prepare under US GAAP are as follows:
 
                                     F-28
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
    (i) Under UK GAAP, net cash flow from operating activities is determined
  before considering cash flows from returns on investments and servicing of
  finance and taxes paid. Under US GAAP, net cash flow from operating
  activities is determined after these items.
 
  A summary of the Company's operating, investing and financial activities
classified in accordance with US GAAP is presented below. For purposes of this
summary, cash and cash equivalents consist of cash and deposits with banks.
 
<TABLE>
<CAPTION>
                              YEAR ENDED       SIX MONTHS                NINE MONTHS ENDED
                             DECEMBER 31,        ENDED     YEAR ENDED        MARCH 31,
                          -------------------   JUNE 30,    JUNE 30,   -----------------------
                            1994      1995        1996        1997        1997         1998
                          --------  ---------  ----------  ----------  -----------  ----------
                                                                       (UNAUDITED)
<S>                       <C>       <C>        <C>         <C>         <C>          <C>
Cash (used in) operating
 activities.............   (33,817)   (71,391)   (442,757) (2,270,614) (2,693,271)  (2,020,922)
Cash (used in)/provided
 by financing activi-
 ties...................   252,174  1,989,216   4,657,131   2,311,761     (56,779)   7,104,572
Cash (used in)/provided
 by investing activi-
 ties...................  (166,850)  (372,943) (4,506,353)    540,654  (2,005,612)  (7,301,192)
                          --------  ---------  ----------  ----------  ----------   ----------
Net increase/(decrease)
 in cash and deposits
 with banks.............    51,507  1,544,882    (291,979)    581,801  (4,755,662)  (2,217,542)
Balance at beginning of
 period.................    36,794     88,301   1,633,183   1,341,204   5,641,358    1,923,005
                          --------  ---------  ----------  ----------  ----------   ----------
Balance at end of peri-
 od.....................    88,301  1,633,183   1,341,204   1,923,005     885,696     (294,537)
                          ========  =========  ==========  ==========  ==========   ==========
</TABLE>
 
  The effect of exchange rate change on cash balances held in foreign
currencies during the periods ended March 31, 1998, June 30, 1997 and 1996 and
December 31, 1995 and 1994 amounted to (Pounds)4,673, (Pounds)39,027,
(Pounds)(10,142), (Pounds)(2,143) and nil respectively.
 
  (ii) The amount of taxes and interest paid, net of capitalized interest,
during the periods is:
 
<TABLE>
<CAPTION>
                               YEAR ENDED   SIX
                                DECEMBER   MONTHS    YEAR    NINE MONTHS ENDED
                                  31,      ENDED    ENDED        MARCH 31,
                               ---------- JUNE 30, JUNE 30, -------------------
                               1994 1995    1996     1997      1997      1998
                               ---- ----- -------- -------- ----------- -------
                                                            (UNAUDITED)
<S>                            <C>  <C>   <C>      <C>      <C>         <C>
Interest, net of capitaliza-
 tion......................... 806     --    --     80,862    70,968    158,975
Income taxes..................  --  3,424    --         --        --         --
</TABLE>
 
                                     F-29
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
 (b) Deferred Taxation
 
<TABLE>
<CAPTION>
                                                   JUNE 30,
                                 DECEMBER 31, --------------------  MARCH 31,
                                     1995       1996       1997        1998
                                 ------------ --------  ----------  ----------
<S>                              <C>          <C>       <C>         <C>
DEFERRED TAX LIABILITY
Non current
Fixed assets....................         --     65,490     459,718     955,279
Current
Other...........................         --         --                  (5,003)
                                   --------   --------  ----------  ----------
Total deferred tax liabilities..         --     65,490     459,718     950,276
                                   --------   --------  ----------  ----------
DEFERRED TAX ASSETS
Non current
Fixed asset.....................      1,045         --          --          --
Current
Losses..........................    194,027    632,646   1,590,849   2,575,955
                                   --------   --------  ----------  ----------
Total deferred tax assets.......    195,072    632,646   1,590,849   2,575,955
                                   --------   --------  ----------  ----------
VALUATION ALLOWANCE.............   (195,072)  (567,156) (1,131,131) (1,625,679)
Net deferred tax asset Provided
 under UK GAAP..................         --         --          --          --
                                   --------   --------  ----------  ----------
US GAAP adjustment asset........         --         --          --          --
                                   ========   ========  ==========  ==========
</TABLE>
 
  (c) Other disclosures
 
  Total liabilities, stockholders' equity and total assets were as follows:
 
<TABLE>
<S>                                                                   <C>
December 31, 1995....................................................  3,053,064
June 30, 1996........................................................  7,995,040
June 30, 1997........................................................ 16,851,935
March 31, 1998....................................................... 31,145,922
</TABLE>
 
  Total assets prepared in accordance with US GAAP were as follows:
 
<TABLE>
<S>                                                                   <C>
December 31, 1995....................................................  3,143,144
June 30, 1996........................................................  8,333,378
June 30, 1997........................................................ 17,226,966
March 31, 1998....................................................... 31,536,121
</TABLE>
 
  Long term liabilities prepared in accordance with US GAAP were as follows:
 
<TABLE>
<S>                                                                   <C>
December 31, 1995....................................................     90,080
June 30, 1996........................................................  1,279,265
June 30, 1997........................................................  6,611,766
March 31, 1998....................................................... 11,940,316
</TABLE>
 
                                      F-30
<PAGE>
 
                        INDEPENDENT ENERGY HOLDINGS PLC
 
          NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
 
  (d) Commitments Under Operating Leases
 
  The Company's commitments under operating leases as at March 31, 1998 are as
follows:
 
<TABLE>
<S>                                                                      <C>
Operating leases which expire:
  1998.................................................................. 103,801
  1999..................................................................  77,049
  2000..................................................................  61,992
  2001..................................................................  58,892
  2002..................................................................  50,580
                                                                         -------
                                                                         352,314
                                                                         =======
</TABLE>
 
  Included in the above are subleases of (Pounds)5,250 for the years ending
March 31, 1999 to March 31, 2001 inclusive and (Pounds)1,750 for the year
ended March 31, 2002.
 
  (e) Financial Instruments
 
  Disclosure of estimated fair value of financial instruments is based on the
requirements of Statements of Financial Accounting Standards No. 105, 107 and
119.
 
 Cash, trade debtors, trade creditors and short term borrowings.
 
  The carrying amounts of these items approximate fair value.
 
  The CFD's for hedging of pool purchases notional value at March 31, 1998 is
(Pounds)13.4 million based on volume remaining under the CFD contract.
 
  (f) Reconciliation of tax charge to statutory rate on losses
 
<TABLE>
<CAPTION>
                                                      JUNE 30,
                                    DECEMBER 31, --------------------   MARCH
                                        1995       1996       1997     31, 1998
                                    ------------ --------  ----------  --------
<S>                                 <C>          <C>       <C>         <C>
(Loss) on ordinary activities be-
 fore taxation....................     (65,043)  (891,193) (1,181,593) (426,105)
                                      ========   ========  ==========  ========
Expected tax (credit) charge at
 the statutory rate...............     (23,791)  (293,131)   (366,294) (132,093)
Increase in deferred tax liabili-
 ty...............................      (2,327)   (65,490)   (394,228) (490,558)
Actual tax charge on continuing
 activities.......................          --         --          --        --
                                      --------   --------  ----------  --------
Difference to reconcile...........     (23,791)  (358,621)   (760,522) (622,651)
                                      ========   ========  ==========  ========
Deferred tax asset not recognized.    (128,269)  (437,574)   (958,203) (985,107)
Intangible asset tax allowances...     104,478     79,011     212,411   416,115
Inadmissible expenditure..........          --        (58)    (14,730)  (53,659)
                                      --------   --------  ----------  --------
                                       (23,791)  (358,621)   (760,522) (622,651)
                                      ========   ========  ==========  ========
</TABLE>
 
  A reconciliation has not been provided for the year ended December 31, 1994
as all operations have subsequently been discontinued.
 
  The Company has accumulated losses to be carried forward and relieved in the
future at the following period ends of:
 
<TABLE>
<S>                                                                    <C>
March 31, 1998........................................................ 8,300,000
June 30, 1997......................................................... 5,100,000
June 30, 1996.........................................................   750,000
December 31, 1995.....................................................   149,000
</TABLE>
 
                                     F-31
<PAGE>
 
                                   GLOSSARY
 
  Unless the context indicates otherwise, the following terms have the
meanings shown below:
 
  Bcf--a billion cubic feet of gas at standard conditions
 
  Consumer--an end-user of electricity whose usage is recorded by one meter
 
  CFD--a contract for difference, a hedging instrument
 
  Crude oil or oil--crude oil, including condensate and natural gas liquids
 
  Electricity Act--Electricity Act 1989
 
  Gas or natural gas--any hydrocarbons or mixture of hydrocarbons and other
gases consisting primarily of methane which at normal operating conditions are
in a gaseous state
 
  Generator--a producer of electricity
 
  GW--Gigawatt, 1,000 MW
 
  GWh--Gigawatthour, 1,000 MWh
 
  kW--kilowatt, the unit measurement of the rate at which electricity is
consumed or generated. It is a measurement of power or capacity. One kW is
approximately the power absorbed by 0.8 horsepower
 
  kWh--a unit of electricity equal to one kW produced or consumed for one hour
 
  Mcf--a thousand cubic feet of gas at standard conditions
 
  MW--Megawatt, 1,000 kW
 
  MWh--Megawatthour, 1,000 kWh
 
  NGC--National Grid Company plc
 
  Peaking plant--an electricity generating facility that generates electricity
to be sold when the "peak" demand (and hence price) for electricity makes it
advantageous to generate marginal or higher cost electricity
 
  PES--primary electricity supplier
 
  Proved developed reserves--the oil and gas reserves expected to be produced
through existing wells and existing equipment and operating methods
(additional oil and gas reserves expected to be obtained through the
application of fluid injection or other improved recovery techniques for
supplementing the natural forces and mechanisms of primary recovery are
included only after testing a pilot project or after the operation of an
installed program has confirmed through production response that increased
recovery will be achieved).
 
  Proved reserves--the estimated quantities of crude oil and natural gas which
geological and engineering data demonstrate with reasonable certainty to be
recovered in future years from known reservoirs under existing economic and
operating conditions, i.e., prices and costs as of the date the estimate is
made. Prices include consideration of changes in existing prices provided only
by contractual agreements, but not escalations based upon future conditions.
 
  Proved undeveloped reserves--the oil and gas reserves expected to be
recovered from new wells on undrilled acreage, or from existing wells where a
relatively major expenditure is required for completion, but not including
reserves attributable to any acreage for which an application of fluid
injection or other improved recovery technique is contemplated, unless such
techniques have been proved effective by actual tests in the area and in the
same reservoir (reserves on undrilled acreage are limited to those drilling
units offsetting productive units that are reasonably certain of production
when drilled; proved reserves for other undrilled units can be claimed only
where it can be demonstrated with certainty that there is continuity of
production from the existing formation).
 
                                      G-1
<PAGE>
 
  REC--regional electricity company
 
  Second tier direct sales--a system where a supplier of electricity holding a
second tier license uses the distribution system of a third party to transport
power to an end user and pays a fee for the use of the distribution system
 
  Second tier license--a license issued by the regulator enabling the holder
to be a supplier of electricity
 
  Supplier--the entity that provides and charges the user (customer) for
electricity. The supplier may generate the electricity or purchase it from the
Pool
 
  The Pool--the Electricity Pool of England and Wales, a trading mechanism
where the physical trading of electricity between generators and suppliers
occurs
 
  TWh--Terawatthour, 1,000 GWh
 
                                      G-2
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS, OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, IN CONNECTION WITH
THE OFFERING MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON
AS HAVING BEEN AUTHORIZED BY INDEPENDENT ENERGY, THE UNDERWRITERS, OR ANY
OTHER PERSON. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HERE-
UNDER SHALL UNDER ANY CIRCUMSTANCES CREATE ANY IMPLICATION THAT THERE HAS BEEN
NO CHANGE IN THE AFFAIRS OF INDEPENDENT ENERGY SINCE THE DATE HEREOF. THIS
PROSPECTUS DOES NOT CONSTITUTE AN OFFER OR A SOLICITATION OF AN OFFER TO BUY
ANY SECURITIES BY ANYONE IN ANY JURISDICTION IN WHICH SUCH OFFER OR SOLICITA-
TION IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH OFFER OR SOLICITA-
TION IS NOT QUALIFIED TO DO SO OR TO ANY PERSON TO WHO IT IS UNLAWFUL TO MAKE
SUCH OFFER OR SOLICITATION.
 
                                 ------------
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                            PAGE
<S>                                                                         <C>
Service of Process and Enforcement of Liabilities.........................    3
Available Information.....................................................    4
Presentation of Certain Financial Information.............................    5
Prospectus Summary........................................................    6
Risk Factors..............................................................   11
Company Background and History............................................   16
Use of Proceeds...........................................................   16
Exchange Rates............................................................   17
Nature of Trading Market and Market Information...........................   18
Dividend Policy...........................................................   19
Capitalization............................................................   20
Dilution..................................................................   21
Selected Consolidated Financial Data......................................   22
Management's Discussion and Analysis of Financial Condition and Results of
 Operations...............................................................   24
Business and Properties...................................................   29
The Structure of the United Kingdom Electricity Industry..................   37
Management................................................................   40
Certain Relationships and Related Transactions............................   42
Principal Shareholders....................................................   43
Description of Share Capital..............................................   44
Description of American Depositary Receipts...............................   48
Taxation..................................................................   55
Underwriting..............................................................   60
Legal Matters.............................................................   62
Experts...................................................................   62
Index to Consolidated Financial Statements................................  F-1
Glossary..................................................................  G-1
</TABLE>
 
                                 ------------
  UNTIL      , 1998 (25 DAYS AFTER THE DATE OF THIS PROSPECTUS), ALL DEALERS
EFFECTING TRANSACTIONS IN THE ADSS, WHETHER OR NOT PARTICIPATING IN THIS DIS-
TRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS IS IN ADDITION TO THE
OBLIGATIONS OF DEALERS TO DELIVER A PROSPECTUS WHEN ACTING AS UNDERWRITERS AND
WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
                   [LOGO OF INDEPENDENT ENERGY HOLDINGS PLC]
 
                     8,000,000 AMERICAN DEPOSITARY SHARES
 
                            REPRESENTING 8,000,000
                                ORDINARY SHARES
 
                               ----------------
 
                                  PROSPECTUS
 
                               ----------------
 
                         DONALDSON, LUFKIN & JENRETTE
                            SECURITIES CORPORATION
 
                         JOHNSON RICE & COMPANY L.L.C.
 
                           SOUTHCOAST CAPITAL L.L.C.
 
                                       , 1998
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                    PART II
 
                  INFORMATION NOT REQUIRED IN THE PROSPECTUS.
 
ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
  The following are estimated expenses, other than underwriting commissions,
expected to be incurred by Enterprise in connection with the issuance and
distribution of the securities registered under this Registration Statement.
 
<TABLE>   
<CAPTION>
                                                                     TO BE PAID
                                                                         BY
                                                                     REGISTRANT
                                                                     ----------
   <S>                                                               <C>
   Securities and Exchange Commission registration fee.............. $   23,748
   NASD fees and expenses...........................................      6,940
   Printing and engraving expenses..................................    125,000
   Legal fees and expenses..........................................    200,000
   Accounting fees and expenses.....................................     95,000
   Nasdaq listing fees..............................................     95,000
   Engineering fees.................................................     75,000
   Stamp duty expenses..............................................    990,000
   Miscellaneous....................................................    389,312
                                                                     ----------
     Total.......................................................... $2,000,000
                                                                     ==========
</TABLE>    
 
ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
  Except as hereinafter set forth, there is no provision of Independent
Energy's Memorandum and Articles of Association or any contract, arrangement
or statute under which any director or officer of Independent Energy is
insured or indemnified in any manner against any liability that he may incur
in his capacity as such.
 
  The Memorandum and Articles of Association of Independent Energy provide
that, subject to the provisions of the Companies Act 1985, but without
prejudice to any indemnity to which a director or officer might otherwise be
entitled, every director or officer of Independent Energy shall be indemnified
out of the assets of Independent Energy against any liability, loss or
expenditure incurred by him in defending any proceedings, whether civil or
criminal, which relate to anything done or omitted to be done or alleged to
have been done or omitted to be done by him as an officer or auditor of
Independent Energy and in which judgment is given in his favor or in which he
is acquitted, or incurred in connection with any application in which relief
is granted to him by the court from liability in respect of any such act or
omission or from liability to pay any amount in respect of any such act or
omission or from liability to pay any amount in respect of shares acquired by
a nominee of Independent Energy.
 
  Section 310 of the Companies Act 1985 (as amended by the Companies Act 1989)
provides as follows:
 
  "310. Provisions Exempting Officers and Auditors from Liability
 
  This section applies to any provision, whether contained in a company's
articles or in any contract with the Company or otherwise, for exempting any
officer of the Company or any person (whether an officer or not) employed by
the Company as auditor from, or indemnifying him against any liability which
by virtue of any rule of law would otherwise attach to him in respect of any
negligence, default, breach of duty or breach of trust of which he may be
guilty in relation to the Company.
 
  I. Except as provided by the following subsection, any such provision is
   void.
 
  II. This section does not prevent a company--
 
    A. from purchasing and maintaining for any such officer or auditor
  insurance against any such liability, or
 
                                     II-1
<PAGE>
 
    B. from indemnifying any such officer or auditor against any liability
  incurred by him--
 
      1. in defending any proceedings (whether civil or criminal) in which
    judgment is given in his favor or he is acquitted, or
 
      2. in connection with any application under Section 144(3) or (4)
    (acquisition of shares by innocent nominee) or Section 727 (general
    power to grant relief in case of honest and reasonable conduct) in
    which relief is granted to him by the court."
 
  The Underwriters will each agree, severally, to indemnify Independent
Energy's directors, Independent Energy's officers who sign the Registration
Statement and Independent Energy's authorized representative in the U.S. from
and against certain liabilities based on information relating to such
Underwriter furnished in writing by such Underwriter expressly for use herein.
 
  Independent Energy has obtained directors' and officers' insurance coverage,
which, subject to policy terms and limitations, includes coverage to reimburse
Independent Energy for amounts that it may be required or permitted by law to
pay directors or officers of Independent Energy.
 
ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES
 
  In September 1995, IEUKL sold 9,309 of its ordinary shares in the U.S. at a
price of (Pounds)200 per share. Such shares were subsequently exchanged for
1,861,000 Shares of Independent Energy. In May 1996, Independent Energy sold
1,772,524 Shares in the U.S. and 3,227,476 Shares in the U.K. at a price of
(Pounds)1 per share. In June 1997, Independent Energy sold 1,866,648 Shares in
the U.S. at a price of 75p per Share and 140,000 Shares issuable upon the
exercise of warrants in the U.K. at a price of 75p per Share. In September
1997, Independent Energy sold 1,437,329 Shares in the U.S. and 1,194,329
Shares in the U.K. at a price of 95p per Share. All Shares sold in the U.S.
were offered and sold pursuant to an exemption for registration under Section
4(2) of the Securities Act and all Shares sold in the U.K. were offered and
sold pursuant to an exemption under Regulation S under the Securities Act.
 
ITEM 16. EXHIBITS
 
<TABLE>   
<CAPTION>
 EXHIBIT
   NO.
 -------
 <C>     <S>
    1    Form of Underwriting Agreement
   *3    Memorandum and Articles of Association, as amended, of Independent
         Energy
   *4.1  Form of Deposit Agreement among Independent Energy, The Bank of New
         York, as Depositary, and the holders from time to time of American
         Depositary Receipts evidencing American Depositary Shares representing
         Ordinary Shares
   *4.2  Form of American Depositary Receipt evidencing American Depositary
         Shares representing Ordinary Shares (included in Exhibit 4.1)
    5    Opinion of Masons as to the legality of the Ordinary Shares
    8.1  Opinion of Masons as to U.K. tax matters relative to the Ordinary
         Shares (included in the Prospectus relating to the Ordinary Shares
         under "Taxation" with a confirmation included in Exhibit 5)
    8.2  Opinion of Akin, Gump, Strauss, Hauer & Feld, L.L.P. as to U.S. tax
         matters relative to the Ordinary Shares (included in the Prospectus
         relating to the Ordinary Shares under "Taxation" with a confirmation
         included in this Exhibit)
  *10.1  Accession Agreement to the Pooling an Settlement Agreement
  *10.2  Carried Interest Agreement between Independent Energy UK Limited and
         Altwood Petroleum Limited dated May 21, 1996
</TABLE>    
 
                                     II-2
<PAGE>
 
<TABLE>   
<CAPTION>
 EXHIBIT
   NO.
 -------
 <C>     <S>
  *10.3  Hive-up Agreement dated May 14, 1996 between Eukan Energy Limited and
         Independent Energy UK Limited
  *10.4  Hive-up Agreement dated May 14, 1996 between Elswick Petroleum Limited
         and Independent Energy UK Limited
  *10.5  Second Tier License to Supply Electricity for Independent Energy UK
         Limited dated March 7, 1996
  *10.6  Loan Note Instrument dated June 30, 1997 by the Company with respect
         to (Pounds)1,400,000 10% unsecured Notes due 2002
  *10.7  Warrant Instrument dated June 30, 1997 by the Company with respect to
         140,000 Warrants to purchase ordinary shares
  *10.8  Credit Agreement dated September 5, 1997 between the Company,
         Independent Energy UK Limited Barclays Bank PLC and several lenders
   10.9  Letter Agreement regarding Amendment to Credit Agreement dated June 4,
         1998 between the Company, Independent Energy UK Limited, Barclays Bank
         PLC and several lenders
   10.10 Letter of Variation dated July 15, 1998 between the Company,
         Independent Energy UK Limited and Barclays Bank PLC
  *10.11 Master Equipment Lease Agreement dated April 19, 1996 between
         Machinery Acceptance Corporation and Independent Energy UK Limited
   10.12 Master Finance Lease Agreement dated June 17, 1997 between Debis
         Financial Services Limited and Independent Energy UK Limited
   10.13 Lease Master Agreement dated October 30, 1997 between ING Lease (UK)
         Limited and Independent Energy UK Limited
   21    List of Subsidiaries
   23.1  Consent of Masons (included in Exhibit 5)
   23.2  Consent of Akin, Gump, Strauss, Hauer & Feld, L.L.P. (included in
         Exhibit 8.2)
   23.3  Consent of Pannell Kerr Forster
 **23.4  Consent of Gaffney, Cline & Associates Ltd.
 **24    Powers of Attorney (included on the signature pages hereof)
</TABLE>    
- --------
          
 *  Incorporated herein by reference to the Registration Statement on Form 20-
    F (File No. 0-23451) filed by Independent Energy with the Commission.     
   
**  Previously filed.     
 
ITEM 17. UNDERTAKINGS
 
  The undersigned Registrant hereby undertakes:
 
    (1) To provide to the underwriters at the closing specified in the
  underwriting agreement certificates in such denominations and registered in
  such names as required by the underwriters to permit prompt delivery to
  each purchaser.
 
    (2) Insofar as indemnifications for liabilities arising under the
  Securities Act of 1933 may be permitted to directors, officers and
  controlling persons of the registrant, 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 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 Act and will be governed by the final adjudication of such issue.
 
                                     II-3
<PAGE>
 
    (3) For purposes of determining any liability under the Securities Act of
  1933, 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.
 
    (4) For the purpose of determining any liability under the Securities Act
  of 1933 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-4
<PAGE>
 
                                  SIGNATURES
   
  Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Amendment No. 2 to the Registration Statement to be
signed on its behalf by the undersigned thereunto duly authorized on July 22,
1998.     
 
                                          INDEPENDENT ENERGY HOLDINGS plc
                                          (Registrant)
 
                                                            *
                                          By:__________________________________
                                                     Burt H. Keenan
                                                   Executive Chairman
                                                 
  Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed by the following persons in the capacities and on
the dates indicated.
 
<TABLE>      
<S>                                  <C>                       <C> 

              SIGNATURE                      TITLE                   DATE
 
                 *                   Executive Chairman        July 22, 1998
- -----------------------------------   (Principal               
          Burt H. Keenan              Executive Officer)                
 
                 
                 *                   Managing Director         July 22, 1998   
- -----------------------------------                            
          John L. Sulley                                                
 
                 
                 *                   Executive Director--      July 22, 1998
- -----------------------------------   Finance (Principal       
            Ian Stewart               Financial and                     
                                      Accounting Officer)
 
                                                                  
                 *                   Executive Director--      July 22, 1998
- -----------------------------------   Resources                         
         William E. Evans
 
                 
                 *                   Executive Director--      July 22, 1998
- -----------------------------------   Operations               
           Robert Jones                                                 
 
                 
                 *                   Non-Executive             July 22, 1998
- -----------------------------------   Director                 
            Roy Deakin                                                  
 
                                                                  
                 *                   Non-Executive             July 22, 1998
- -----------------------------------   Director and                      
         Jerry W. Jarrell             Authorized         
                                      Representative in  
                                      the United States  
                                                                  
                 *                   Non-Executive             July 22, 1998
- -----------------------------------   Director                          
             David May
 
* By: /s/Jerry W. Jarrell            Attorney-in-Fact          July 22, 1998
- -----------------------------------                            
         Jerry W. Jarrell                                               
</TABLE>      
                                     II-5

<PAGE>
 
                                                                       EXHIBIT 1

                     8,000,000 AMERICAN DEPOSITARY SHARES
 
                     EACH REPRESENTING ONE ORDINARY SHARE

                        INDEPENDENT ENERGY HOLDINGS plc

                            UNDERWRITING AGREEMENT


                                                    July __, 1998


DONALDSON, LUFKIN & JENRETTE 
   SECURITIES CORPORATION
JOHNSON RICE & COMPANY L.L.C.
SOUTHCOAST CAPITAL L.L.C.
As representatives of the several Underwriters 
   named in Schedule I hereto
c/o  Donaldson, Lufkin & Jenrette Securities 
   Corporation
  277 Park Avenue
  New York, New York 10172

Dear Sirs:

     Independent Energy Holdings plc, an English public limited company (the
"COMPANY"), proposes to sell 8,000,000 American Depositary Shares representing
8,000,000 ordinary shares, nominal value 1 p per share ("ORDINARY SHARES") of
the Company to the several underwriters named in Schedule I hereto (the
"UNDERWRITERS").  The 8,000,000 American Depositary Shares to be sold by the
Company are hereinafter called the "FIRM ADSs" and the 8,000,000 Ordinary Shares
underlying the Firm ADSs are referred to herein as "FIRM SHARES".  The Company
also proposes to sell to the several Underwriters not more than an additional
1,200,000 American Depositary Shares (the "ADDITIONAL ADSs") representing an
additional 1,200,000 Ordinary Shares (the "ADDITIONAL SHARES") if requested by
the Underwriters as provided in Section 2 hereof.  The Firm ADSs and the
Additional ADSs are hereinafter referred to collectively as the "ADSs".  The
Firm Shares and the Additional Shares are hereinafter referred to as the
"SHARES".
<PAGE>
 
     The ADSs will be evidenced by American Depositary Receipts (the "ADRs")
issuable in accordance with a Deposit Agreement dated as of April 17, 1998 (the
"DEPOSIT AGREEMENT") among the Company, the Bank of New York, as Depositary (the
"DEPOSITARY") and all holders from time to time of the ADRs.  The ADSs will be
issued by the Depositary to the Underwriters upon deposit of the Firm Shares
underlying such ADSs with the Depositary.  Unless the context otherwise
requires, references herein to the ADSs shall include the ADRs evidencing the
ADSs.

     Section 1.  Registration Statement and Prospectus.  The Company has
prepared and filed with the Securities and Exchange Commission (the
"COMMISSION") in accordance with the provisions of the Securities Act of 1933,
as amended, and the rules and regulations of the Commission thereunder
(collectively, the "ACT"), a registration statement on Form F-1, including a
prospectus, relating to the ADSs. The registration statement, as amended at the
time it became effective, including the information (if any) deemed to be part
of the registration statement at the time of effectiveness pursuant to Rule 430A
under the Act, is hereinafter referred to as the "REGISTRATION STATEMENT"; and
the prospectus in the form first used to confirm sales of ADSs is hereinafter
referred to as the "PROSPECTUS".  If the Company has filed or is required
pursuant to the terms hereof to file a registration statement pursuant to Rule
462(b) under the Act registering additional ADSs (a "RULE 462(b) REGISTRATION
STATEMENT"), then, unless otherwise specified, any reference herein to the term
"Registration Statement" shall be deemed to include such Rule 462(b)
Registration Statement.  The Company has also prepared and filed with the
Commission in accordance with the provisions of the Act a registration statement
on Form F-6, as amended (the "ADS REGISTRATION STATEMENT") relating to the ADSs.
Unless the context otherwise requires, any reference herein to the "REGISTRATION
STATEMENT" shall include the ADS Registration Statement.

     Section 2.  Agreements to Sell and Purchase and Lock-Up Agreements.   On
the basis of the representations and warranties contained in this Agreement, and
subject to its terms and conditions, the Company agrees to sell, and each
Underwriter agrees, severally and not jointly, to purchase from the Company at a
price per ADS of $______ (the "PURCHASE PRICE") the number of Firm ADSs set
forth opposite the name of such Underwriter in Schedule I hereto.

     On the basis of the representations and warranties contained in this
Agreement, and subject to its terms and conditions, the Company agrees to sell
the Additional ADSs and the Underwriters shall have the right to purchase,
severally and not jointly, up to 1,200,000 Additional ADSs from the Company at
the Purchase Price.  Additional ADSs may be purchased solely for the purpose of
covering over-allotments made in connection with the offering of the Firm ADSs.
The Underwriters may exercise their right to purchase Additional ADSs in whole

                                       2
<PAGE>
 
or in part from time to time by giving written notice thereof to the Company
within 30 days after the date of this Agreement. You shall give any such notice
on behalf of the Underwriters and such notice shall specify the aggregate number
of Additional ADSs to be purchased pursuant to such exercise and the date for
payment and delivery thereof, which date shall be a business day (i) no earlier
than two business days after such notice has been given (and, in any event, no
earlier than the Closing Date (as hereinafter defined)) and (ii) no later than
ten business days after such notice has been given.  If any Additional ADSs are
to be purchased, each Underwriter, severally and not jointly, agrees to purchase
from the Company the number of Additional ADSs (subject to such adjustments to
eliminate fractional shares as you may determine) which bears the same
proportion to the total number of Additional ADSs to be purchased from the
Company as the number of Firm ADSs set forth opposite the name of such
Underwriter in Schedule I bears to the total number of Firm ADSs.

     The Company hereby agrees not to (i) offer, pledge, sell, contract to sell,
sell any option or contract to purchase, purchase any option or contract to
sell, grant any option, right or warrant to purchase, or otherwise transfer or
dispose of, directly or indirectly, any Ordinary Shares, ADSs or ADRs or any
securities convertible into or exercisable or exchangeable for Ordinary Shares,
ADSs or ADRs or (ii) enter into any swap or other arrangement that transfers all
or a portion of the economic consequences associated with the ownership of any
Ordinary Share, ADS or ADR (regardless of whether any of the transactions
described in clause (i) or (ii) is to be settled by the delivery of Ordinary
Shares, ADSs or ADRs, or such other securities, in cash or otherwise), except to
the Underwriters pursuant to this Agreement, for a period of 180 days after the
date of the Prospectus without the prior written consent of Donaldson, Lufkin &
Jenrette Securities Corporation. Notwithstanding the foregoing, during such
period the Company may issue Ordinary Shares upon the exercise of an option or
warrant or the conversion of a security outstanding on the date hereof and may
grant stock options to purchase Ordinary Shares to employees and consultants of
the Company and its subsidiaries; provided, however, that such options do not
vest within 180 days after the date of the Prospectus.  The Company also agrees
not to file any registration statement with respect to any shares of Ordinary
Shares, ADSs or ADRs or any securities convertible into or exercisable or
exchangeable for Ordinary Shares, ADSs or ADRs for a period of 180 days after
the date of the Prospectus without the prior written consent of Donaldson,
Lufkin & Jenrette Securities Corporation; provided, however, that the Company
may file and cause to become effective under the Act one or more registration
statements on Form [ ] relating to the offer, sale and delivery of Ordinary
Shares pursuant to stock options or other employee benefit plans. The Company
shall, prior to or concurrently with the execution of this Agreement, deliver an
agreement executed by each of the directors and officers of the Company to the
effect that such person will not, during the period commencing on the date such
person signs such

                                       3
<PAGE>
 
agreement and ending 180 days after the date of the Prospectus, without the
prior written consent of Donaldson, Lufkin & Jenrette Securities Corporation,
(A) engage in any of the transactions described in the first sentence of this
paragraph or (B) make any demand for, or exercise any right with respect to, the
registration of any Ordinary Shares, ADSs or ADRs or any securities convertible
into or exercisable or exchangeable for Ordinary Shares, ADSs or ADRs.

     Section 3.  Terms of Public Offering.  The Company is advised by you that
the Underwriters propose (i) to make a public offering of their respective
portions of the ADSs as soon after the execution and delivery of this Agreement
as in your judgment is advisable and (ii) initially to offer the ADSs upon the
terms set forth in the Prospectus.

     Section 4.  Delivery and Payment.    Payment for the ADSs shall be made in
U.S. dollars  to the Company by wire transfer in same day funds on the Closing
Date or the applicable Option Closing Date, as the case may be, against deposit
of the Ordinary Shares underlying such ADSs with the London office of The Bank
of New York, as custodian for the Depositary (the "CUSTODIAN"), instruction by
the Custodian to the Depositary to issue such ADSs and delivery of ADRs
evidencing all such ADSs.  The ADRs shall be in definitive form and shall be in
such names and in such denominations as Donaldson, Lufkin & Jenrette Securities
Corporation shall request not later than two business days prior to the Closing
Date or the applicable Option Closing Date (as defined below), with any stamp
duty, stamp duty reserve or other transfer or similar taxes payable in
connection with (i) the deposit by the Company of the Shares with the Depositary
or the Custodian against the issuance of ADRs evidencing ADSs and (ii) the sale
and delivery by the Company of the Shares underlying the ADSs to or for the
account of the Underwriters.  The certificates for the ADRs will be made
available for inspection and packaging not later than 8:00 A.M., New York City
time, on the business day prior to the Closing Date or the applicable Option
Closing Date, as the case may be.  The time and date of delivery of the ADSs
shall be 8:00 A.M., New York City time, on July __, 1998 or such other time on
the same or such other date as Donaldson, Lufkin & Jenrette Securities
Corporation and the Company shall agree in writing.  The time and date of
delivery and payment for the ADSs are hereinafter referred to as the "CLOSING
DATE."  The time and date of delivery and payment for any Additional ADSs to be
purchased by the Underwriters shall be 8:00 A.M., New York City time, on the
date specified in the applicable exercise notice given to you pursuant to
Section 2 hereof or such other time on the same or such other date as Donaldson,
Lufkin & Jenrette Securities Corporation and the Company shall agree in writing.
The time and date of delivery and payment for any Additional ADSs are
hereinafter referred to as an "OPTION CLOSING DATE".

                                       4
<PAGE>
 
     The documents to be delivered on the Closing Date or any Option Closing
Date on behalf of the parties hereto pursuant to Section 8 of this Agreement
shall be delivered at the offices of Davis Polk & Wardwell, 450 Lexington
Avenue, New York, New York 10017.

     Section 5.  Agreements of the Company.  The Company agrees with you:

            (a)  To advise you promptly and, if requested by you, to confirm
     such advice in writing, (i) of any request by the Commission for amendments
     to the Registration Statement or the ADS Registration Statement or
     amendments or supplements to the Prospectus or for additional information,
     (ii) of the issuance by the Commission of any stop order suspending the
     effectiveness of the Registration Statement or the ADS Registration
     Statement or of the suspension of qualification of the ADSs for offering or
     sale in any jurisdiction, or the initiation of any proceeding for such
     purposes, (iii) when any amendment to the Registration Statement or the ADS
     Registration Statement becomes effective, (iv) if the Company is required
     to file a Rule 462(b) Registration Statement after the effectiveness of
     this Agreement, when the Rule 462(b) Registration Statement has become
     effective and (v) of the happening of any event during the period referred
     to in Section 5(d) below which makes any statement of a material fact made
     in the Registration Statement, the ADS Registration Statement or the
     Prospectus untrue or which requires any additions to or changes in the
     Registration Statement, the ADS Registration Statement or the Prospectus in
     order to make the statements therein not misleading. If at any time the
     Commission shall issue any stop order suspending the effectiveness of the
     Registration Statement, the Company will use its best efforts to obtain the
     withdrawal or lifting of such order at the earliest possible time.

            (b)  To furnish to you four signed copies of the Registration
     Statement and the ADS Registration Statement as first filed with the
     Commission and of each amendment to it, including all exhibits, and to
     furnish to you and each Underwriter designated by you such number of
     conformed copies of the Registration Statement and the ADS Registration
     Statement as so filed and of each amendment to it, without exhibits, as you
     may reasonably request.

            (c)  To prepare the Prospectus, the form and substance of which
     shall be satisfactory to you, and to file the Prospectus in such form with
     the Commission within the applicable period specified in Rule 424(b) under
     the Act; during the period specified in Section 5(d) below, not to file any
     further amendment to the Registration Statement and the ADS Registration
     Statement and not to make any amendment or supplement to 

                                       5
<PAGE>
 
     the Prospectus of which you shall not previously have been advised or to
     which you shall reasonably object after being so advised; and, during such
     period, to prepare and file with the Commission, promptly upon your
     reasonable request, any amendment to the Registration Statement and the ADS
     Registration Statement or amendment or supplement to the Prospectus which
     may be necessary or advisable in connection with the distribution of the
     ADSs by you, and to use its best efforts to cause any such amendment to the
     Registration Statement and the ADS Registration Statement to become
     promptly effective.

            (d)  Promptly after the execution of this Agreement and from time to
     time thereafter for such period as in the opinion of counsel for the
     Underwriters a prospectus is required by law to be delivered in connection
     with sales by an Underwriter or a dealer, to furnish in New York City to
     each Underwriter and any dealer as many copies of the Prospectus (and of
     any amendment or supplement to the Prospectus) as such Underwriter or
     dealer may reasonably request.

            (e)  If during the period specified in Section 5(d), any event shall
     occur or condition shall exist as a result of which, in the opinion of
     counsel for the Underwriters, it becomes necessary to amend or supplement
     the Prospectus in order to make the statements therein, in the light of the
     circumstances when the Prospectus is delivered to a purchaser, not
     misleading, or if, in the opinion of counsel for the Underwriters, it is
     necessary to amend or supplement the Prospectus to comply with applicable
     law, forthwith to prepare and file with the Commission an appropriate
     amendment or supplement to the Prospectus so that the statements in the
     Prospectus, as so amended or supplemented, will not in the light of the
     circumstances when it is so delivered, be misleading, or so that the
     Prospectus will comply with applicable law, and to furnish to each
     Underwriter and to any dealer as many copies thereof as such Underwriter or
     dealer may reasonably request.

            (f)  Prior to any public offering of the ADSs, to cooperate with you
     and counsel for the Underwriters in connection with the registration or
     qualification of the ADSs for offer and sale by the several Underwriters
     and by dealers under the state securities or Blue Sky laws of such
     jurisdictions as you may request, to continue such registration or
     qualification in effect so long as required for distribution of the ADSs
     and to file such consents to service of process or other documents as may
     be necessary in order to effect such registration or qualification;
     provided, however, that the Company shall not be required in connection
     therewith to qualify as a foreign corporation in any jurisdiction in which
     it is not now so qualified or to take any action that would subject it to
     general

                                       6
<PAGE>
 
     consent to service of process or taxation other than as to matters and
     transactions relating to the Prospectus, the Registration Statement, the
     ADS Registration Statement, any preliminary prospectus or the offering or
     sale of the ADSs, in any jurisdiction in which it is not now so subject.

            (g)  To mail and make generally available to its stockholders as
     soon as practicable an earnings statement covering the twelve-month period
     beginning after the effective date of the Registration Statement that shall
     satisfy the provisions of Section 11(a) of the Act, and to advise you in
     writing when such statement has been so made available.

            (h)  Prior to the Closing Date or the Option Closing Date, as the
     case may be, to make Ordinary Shares available to the Depositary in
     accordance with the provisions of the Deposit Agreement, and otherwise to
     comply with the Deposit Agreement so that ADRs evidencing ADSs will be
     executed (and, if applicable, countersigned) and issued by the Depositary
     against receipt of such Ordinary Shares and delivered to the Underwriters
     at such Closing Date.

            (i)  During the period of three years after the date of this
     Agreement, to furnish to you as soon as available copies of all reports or
     other communications furnished to the record holders of Ordinary Shares or
     furnished to or filed with the Commission or any national securities
     exchange or trading system on which any class of securities of the Company
     is listed (including the Alternative Investment Market of the London Stock
     Exchange) and such other publicly available information concerning the
     Company and its subsidiaries as you may reasonably request.

            (j)  Whether or not the transactions contemplated in this Agreement
     are consummated or this Agreement is terminated, to pay or cause to be paid
     all expenses incident to the performance of its obligations under this
     Agreement, including: (i) the fees, disbursements and expenses of the
     Company's counsel and the Company's accountants in connection with the
     registration and delivery of the Shares and the ADSs under the Act and all
     other fees and expenses in connection with the preparation, printing,
     filing and distribution of the Registration Statement (including financial
     statements and exhibits), the ADS Registration Statement, any preliminary
     prospectus, the Prospectus and all amendments and supplements to any of the
     foregoing, including the mailing and delivering of copies thereof to the
     Underwriters and dealers in the quantities specified herein, (ii) all costs
     and expenses related to the transfer and delivery of the ADSs to the
     Underwriters, (iii) all costs of printing or producing this Agreement, the
     Deposit Agreement and any other agreements or

                                       7
<PAGE>
 
     documents in connection with the offering, purchase, sale or delivery of
     the ADSs, (iv) all expenses, if any, in connection with the registration or
     qualification of the Shares and ADSs for offer and sale under the
     securities or Blue Sky laws of the several states and all costs of printing
     or producing any Preliminary and Supplemental Blue Sky Memoranda in
     connection therewith (including the filing fees and fees and disbursements
     of counsel for the Underwriters in connection with such registration or
     qualification and memoranda relating thereto), (v) the filing fees and
     disbursements of counsel for the Underwriters in connection with the review
     and clearance of the offering of the ADSs by the National Association of
     Securities Dealers, Inc., (vi) all fees and expenses in connection with the
     preparation and filing of the registration statement on Form 8-A relating
     to the Ordinary Shares and all costs and expenses incident to the listing
     of the ADSs on the Nasdaq National Market, (vii) the cost of printing ADR
     certificates representing the ADSs, (viii) the costs and charges if any of
     depositing Ordinary Shares under the Deposit Agreement against issuance of
     ADRs evidencing the ADSs, (ix) the fees and expenses (including fees and
     disbursements of counsel), if any, of the Depositary and any custodian
     appointed under the Deposit Agreement, (x) the cost and charges of any
     transfer agent or registrar, (xi) all stamp duty or stamp duty reserve tax
     arising as a result of the deposit of the Shares with the Depositary, (xii)
     the costs and expenses of the Company relating to investor presentations on
     any "road show" undertaken in connection with the marketing of the offering
     of the ADSs, and (xiii) all other costs and expenses incident to the
     performance of the obligations of the Company hereunder for which provision
     is not otherwise made in this Section 5(j). Except as expressly otherwise
     provided in this Section 5 or in Section 8 of this Agreement, the
     Underwriters shall pay all of their own costs, expenses, fees and taxes
     incurred in connection with the offer, sale and delivery of the ADSs,
     including the costs and expenses of the Underwriters relating to investor
     presentations on the "road show" described in the preceding sentence, the
     fees and expenses of their counsel and any advertising expenses incurred by
     them; provided, however, that the cost of any aircraft chartered in
     connection with the "road show" shall be paid one-half by the Company and
     one-half by the Underwriters.

            (k)  To use its best efforts to list for quotation, subject to
     notice of issuance, the ADSs on the Nasdaq National Market and to maintain
     the listing of the ADSs on the Nasdaq National Market for a period of three
     years after the date of this Agreement.

            (l)  To use its best efforts to do and perform all things required
     or necessary to be done and performed under this Agreement by the Company
     prior to the Closing Date or any Option Closing Date, as the 

                                       8
<PAGE>
 
     case may be, and to satisfy all conditions precedent to the delivery of the
     ADSs.

            (m)  To designate CT Corporation Systems, New York, New York, a
     Delaware corporation, as the Company's authorized agent for service of
     process, upon which process may be served in any action, suit or proceeding
     which may be instituted in any state or federal court in the State of New
     York by the Underwriters or person controlling the Underwriters asserting a
     claim for indemnification or contribution under or pursuant to Section 7
     hereof, and the Company will accept the jurisdiction of such court in such
     action, and waive, to the fullest extent permitted by applicable law, any
     defense based upon lack of personal jurisdiction or venue.  A copy of any
     such process shall be sent or given to the Company at the address for
     notices specified in Section 10 hereof.

     Section 6.  Representations and Warranties of the Company.   The Company
represents and warrants to each Underwriter that:

            (a)  Each of the Registration Statement and the ADS Registration
     Statement has become effective and no stop order suspending the
     effectiveness of the Registration Statement or the ADS Registration
     Statement is in effect, and no proceedings for such purpose are pending
     before or, to the knowledge of the Company, threatened by the Commission.

            (b)  (i) Each of the Registration Statement and the ADS Registration
     Statement, when it became effective, did not contain and, as amended, if
     applicable, will not contain any untrue statement of a material fact or
     omit to state a material fact required to be stated therein or necessary to
     make the statements therein not misleading, (ii) each of the Registration
     Statement, the ADS Registration Statement and the Prospectus comply as to
     form and, as amended or supplemented, if applicable, will comply as to form
     in all material respects with the Act and (iii) the Prospectus does not
     contain and, as amended or supplemented, if applicable, will not contain
     any untrue statement of a material fact or omit to state a material fact
     necessary to make the statements therein, in the light of the circumstances
     under which they were made, not misleading, except that the representations
     and warranties set forth in this paragraph do not apply to statements or
     omissions in the Registration Statement, the ADS Registration Statement or
     the Prospectus based upon information relating to any Underwriter furnished
     to the Company in writing by such Underwriter through you expressly for use
     therein.

                                       9
<PAGE>
 
            (c)  Each preliminary prospectus filed as part of the registration
     statement as originally filed or as part of any amendment thereto, or filed
     pursuant to Rule 424 under the Act, complied when so filed in all material
     respects with the Act, and did not contain an untrue statement of a
     material fact or omit to state a material fact required to be stated
     therein or necessary to make the statements therein, in the light of the
     circumstances under which they were made, not misleading, except that the
     representations and warranties set forth in this paragraph do not apply to
     statements or omissions in any preliminary prospectus based upon
     information relating to any Underwriter furnished to the Company in writing
     by such Underwriter through you expressly for use therein.

            (d)  Each of the Company and its subsidiaries has been duly
     incorporated and is validly existing as a limited company under the laws of
     England and Wales, with the corporate power and authority to carry on its
     business and to own, lease and operate its properties as described in the
     Prospectus and each is duly qualified as a foreign corporation authorized
     to do business and is in good standing in each jurisdiction in which the
     nature of its business or its ownership or leasing of property requires
     such qualification, except where the failure to be so qualified would not
     have a material adverse effect on the business, prospects, financial
     condition or results of operations of the Company and its subsidiaries,
     taken as a whole.

            (e)  The authorized share capital of the Company conforms as to
     legal matters in all material respects to the description thereof set forth
     in the Registration Statement and the Prospectus, and all of the issued and
     outstanding shares of capital stock of the Company have been duly
     authorized and validly issued, and are fully-paid and not subject to calls
     for further funds and are not subject to any pre-emptive or similar rights;
     and, except as described in the Prospectus, there are no outstanding rights
     (including, without limitation, preemptive rights), warrants or options to
     acquire, or instruments convertible into or exchangeable for, any shares of
     capital stock or other equity interest in the Company or any of its
     subsidiaries, or any contract, commitment, agreement, understanding or
     arrangement of any kind relating to the issuance of any capital stock of
     the Company or any such subsidiary, any such convertible or exchangeable
     securities or any such rights, warrants or option.

            (f)  The Shares have been duly authorized, and, when delivered to
     and paid for by the Underwriters in accordance with the terms of this
     Agreement, will be duly issued and fully paid and not subject to calls for
     further funds and will conform in all material respects to the descriptions
     thereof in the Prospectus, and the issuance and transfer of such Shares is

                                       10
<PAGE>
 
     not subject to any preemptive or similar right that has not been duly and
     validly waived.

            (g)  Upon the deposit of the Shares underlying the ADSs with the
     Custodian pursuant to the Deposit Agreement against issuance of the ADRs
     evidencing the ADSs, all right, title and interest in such Shares, subject
     to the Deposit Agreement, will be transferred to the Depositary free and
     clear of all liens, encumbrances or claims other than those arising under
     applicable securities laws and the Deposit Agreement.

            (h)  Upon the sale and delivery of the Shares underlying the ADSs to
     the Underwriters and payment therefor against deposit thereof with the
     Custodian and delivery of ADRs evidencing all such ADSs as contemplated by
     this Agreement and the Deposit Agreement, good and valid title to the ADSs
     representing such Shares, free and clear of all liens, encumbrances or
     claims, will be transferred to the Underwriters; the ADSs to be delivered
     hereunder are freely transferable to or for the account of the several
     Underwriters; upon delivery by the Depositary of the ADRs evidencing the
     ADSs against deposit of the Shares in accordance with the Deposit
     Agreement, the ADSs will be duly and validly issued; the ADSs and the ADRs
     conform as to legal matters in all material respects to the description
     thereof set forth in the Registration Statement and the Prospectus.

            (i)  Neither the Company nor any of its subsidiaries is in violation
     of its respective Memorandum or Articles of Association or in default in
     the performance of any obligation, agreement, covenant or condition
     contained in any indenture, loan agreement, mortgage, lease or other
     agreement or instrument that is material to the Company and its
     subsidiaries, taken as a whole, to which the Company or any of its
     subsidiaries is a party or by which the Company or any of its subsidiaries
     or their respective property is bound.

            (j)  The execution, delivery and performance of this Agreement and
     the Deposit Agreement by the Company, the compliance by the Company with
     all the provisions hereof and of the Deposit Agreement and the consummation
     of the transactions contemplated hereby and thereby will not (i) require
     any consent, approval, authorization or other order of, or qualification
     with, any court or governmental body or agency (except orders of the
     Commission declaring the Registration Statement and the ADS Registration
     Statement effective under the Act and such as may be required under the
     securities or Blue Sky laws of the various states), (ii) conflict with or
     constitute a breach of any of the terms or provisions of, or a default
     under, the Memorandum or Articles of Association of the 

                                       11
<PAGE>
 
     Company or any of its subsidiaries or any indenture, loan agreement,
     mortgage, lease or other agreement or instrument that is material to the
     Company and its subsidiaries, taken as a whole, to which the Company or any
     of its subsidiaries is a party or by which the Company or any of its
     subsidiaries or their respective property is bound, (iii) violate or
     conflict with any applicable law or any rule, regulation, judgment, order
     or decree of any court or any governmental body or agency having
     jurisdiction over the Company, any of its subsidiaries or their respective
     property or (iv) result in the suspension, termination or revocation of any
     Authorization (as defined below) of the Company or any of its subsidiaries
     or any other impairment of the rights of the holder of any such
     Authorization.

            (k)  The information underlying the estimates of the net proved
     reserves of natural gas of the Company as of March 31, 1998 and the present
     value of the future net cash flows therefrom, which was supplied by the
     Company to Gaffney, Cline & Associates, independent petroleum consultants,
     for purposes of preparing the reserve reports and estimates of the Company
     described in the Prospectus, was supplied in accordance with customary
     industry practices; Gaffney, Cline & Associates were, as of the date of the
     reserve report, and are, as of the date hereof, independent petroleum
     consultants with respect to the Company; other than as set forth or
     contemplated in the Prospectus, the Company is not aware of any facts or
     circumstances that would result in a material adverse change in the
     reserves or the present value of future net cash flows therefrom as
     described in the Prospectus and as reflected in the reserve report.

            (l)  There are no legal or governmental proceedings pending or, to
     the knowledge of the Company, threatened to which the Company or any of its
     subsidiaries is or could be a party or to which any of their respective
     property is or could be subject that are required to be described in the
     Registration Statement, the ADS Registration Statement or the Prospectus
     and are not so described; nor are there any statutes, regulations,
     contracts or other documents that are required to be described in the
     Registration Statement, the ADS Registration Statement or the Prospectus or
     to be filed as exhibits to the Registration Statement that are not so
     described or filed as required.

            (m)  Neither the Company nor any of its subsidiaries has violated
     any foreign, federal, state or local law or regulation relating to the
     environment or hazardous or toxic substances or wastes, pollutants or
     contaminants ("ENVIRONMENTAL LAWS"), the protection of human health and
     safety, or the U.S. Foreign Corrupt Practices Act, as amended (the "FCPA")
     or the rules and regulations promulgated thereunder, except for 

                                       12
<PAGE>
 
     such violations which, singly or in the aggregate, would not have a
     material adverse effect on the business, prospects, financial condition or
     results of operation of the Company and its subsidiaries, taken as a whole.

            (n)  Each of the Company and its subsidiaries has such permits,
     licenses, consents, exemptions, franchises, authorizations and other
     approvals (each, an "AUTHORIZATION") of, and has made all filings with and
     notices to, all governmental or regulatory authorities and self-regulatory
     organizations and all courts and other tribunals, as are necessary to own,
     lease, license and operate its respective properties and to conduct its
     business, except where the failure to have any such Authorization or to
     make any such filing or notice would not, singly or in the aggregate, have
     a material adverse effect on the business, prospects, financial condition
     or results of operations of the Company and its subsidiaries, taken as a
     whole.  Each such Authorization is valid and in full force and effect and
     each of the Company and its subsidiaries is in compliance with all the
     terms and conditions thereof and with the rules and regulations of the
     authorities and governing bodies having jurisdiction with respect thereto;
     and no event has occurred (including, without limitation, the receipt of
     any notice from any authority or governing body) which allows or, after
     notice or lapse of time or both, would allow, revocation, suspension or
     termination of any such Authorization or results or, after notice or lapse
     of time or both, would result in any other impairment of the rights of the
     holder of any such Authorization; and such Authorizations contain no
     restrictions that are burdensome to the Company or any of its subsidiaries;
     except where such failure to be valid and in full force and effect or to be
     in compliance, the occurrence of any such event or the presence of any such
     restriction would not, singly or in the aggregate, have a material adverse
     effect on the business, prospects, financial condition or results of
     operations of the Company and its subsidiaries, taken as a whole.

            (o)  There are no costs or liabilities associated with Environmental
     Laws (including, without limitation, any capital or operating expenditures
     required for clean-up, closure of properties or compliance with
     Environmental Laws or any Authorization, any related constraints on
     operating activities and any potential liabilities to third parties) which
     would, singly or in the aggregate, have a material adverse effect on the
     business, prospects, financial condition or results of operations of the
     Company and its subsidiaries, taken as a whole.

            (p)  This Agreement has been duly authorized, executed and delivered
     by the Company.

                                       13
<PAGE>
 
            (q)  The Deposit Agreement has been duly authorized, and, when
     executed and delivered by the Company, will constitute a valid and legally
     binding agreement of the Company, enforceable in accordance with its terms,
     subject, as to enforcement, to bankruptcy, insolvency, fraudulent transfer,
     reorganization, moratorium and similar laws of general applicability
     relating to or affecting creditors' rights and to general equity
     principles.

            (r)  Pannell Kerr Forster, chartered accountants, are independent
     public accountants with respect to the Company and its subsidiaries as
     required by the Act.

            (s)  The consolidated financial statements included in the
     Registration Statement and the Prospectus (and any amendment or supplement
     thereto), together with related schedules and notes, present fairly the
     consolidated financial position, results of operations and changes in
     financial position of the Company and its subsidiaries on the basis stated
     therein at the respective dates or for the respective periods to which they
     apply; such statements and related schedules and notes have been prepared
     in accordance with generally accepted accounting principles in the United
     Kingdom consistently applied and reconciled to the generally accepted
     accounting principles in the United States; the supporting schedules, if
     any, included in the Registration Statement present fairly in accordance
     with generally accepted accounting principles the information required to
     be stated therein; and the other financial and statistical information and
     data set forth in the Registration Statement and the Prospectus (and any
     amendment or supplement thereto) are, in all material respects, accurately
     presented and prepared.

            (t)  The Company is not and, after giving effect to the offering and
     sale of the ADSs and the application of the proceeds thereof as described
     in the Prospectus, will not be, an "investment company" as such term is
     defined in the Investment Company Act of 1940, as amended.

            (u)  There are no contracts, agreements or understandings between
     the Company and any person granting such person the right to require the
     Company to file a registration statement under the Act with respect to any
     securities of the Company or to require the Company to include such
     securities with the Shares and ADSs registered pursuant to the Registration
     Statement.

            (v)  Since the respective dates as of which information is given in
     the Prospectus (exclusive of any amendments or supplements thereto
     subsequent to the date of this Agreement), (i) there has not occurred any
 

                                       14
<PAGE>
 
     material adverse change or any development involving a prospective material
     adverse change in the condition, financial or otherwise, or the results of
     operations, business, management or operations of the Company and its
     subsidiaries, taken as a whole, (ii) there has not been any material
     adverse change or any development involving a prospective material adverse
     change in the capital stock or in the long-term debt of the Company or any
     of its subsidiaries and (iii) neither the Company nor any of its
     subsidiaries has incurred any material liability or obligation, direct or
     contingent.

            (w)  The Company has filed a registration statement pursuant to
     Section 12(g) of the Exchange Act to register the ADSs and has filed an
     application to list the ADSs on the Nasdaq National Market.

            (x)  The form of certificate for the Shares conforms to the
     requirements of U.K. law and the Memorandum and Articles of Association of
     the Company and the ADSs and the ADRs conform to the requirements of the
     Deposit Agreement and the Nasdaq National Market.

            (y)  Other than as set forth or contemplated in the Prospectus, no
     ad valorem stamp duty, stamp duty reserve tax or issue, documentary,
     certification or other similar tax imposed by any government department or
     other taxing authority of or in the United Kingdom is payable in connection
     with (A) the deposit with the Depositary or the Custodian of Shares against
     the issuance of the ADRs evidencing ADSs in accordance with the Deposit
     Agreement, (B) the issue, sale and transfer of the Shares and ADSs to or
     for the respective accounts of the Underwriters, in either case in
     accordance with the terms of this Agreement or (C) the sale and delivery by
     the Underwriters of the Shares and ADSs to the initial purchasers thereof,
     in either case in accordance with the terms of this Agreement and in the
     manner contemplated in the Prospectus.

            (z)  Each certificate signed by any officer of the Company and
     delivered to the Underwriters or counsel for the Underwriters shall be
     deemed to be a representation and warranty by the Company to the
     Underwriters as to the matters covered thereby.

            (aa)  The Company and each of its subsidiaries maintains a system of
     internal accounting controls sufficient to provide reasonable assurance
     that (i) transactions are executed in accordance with management's general
     or specific authorizations, (ii) transactions are recorded as necessary to
     permit preparation of financial statements in conformity with UK GAAP and
     to maintain asset accountability, (iii) access to assets is permitted only
     in accordance with management's general or specific authorization and (iv)
     the recorded accountability for assets is compared with the existing 

                                       15
<PAGE>
 
     assets at reasonable intervals and appropriate action is taken with respect
     to any differences.

            (bb)  Neither the Company nor any of its subsidiaries nor any person
     acting on its or their behalf has taken, directly or indirectly, any action
     which caused or resulted, or was designed or might reasonably be expected
     to cause or result in, the stabilization or manipulation of the price of
     the Ordinary Shares to facilitate the sale or resale of the Shares or ADSs.

            (cc)  The Company has no reason to believe that the final phase of
     deregulation of the U.K. electricity industry will not take place in
     September 1998.

     Section 7.  Indemnification.  (a) The Company agrees to indemnify and hold
harmless each Underwriter, its directors, its officers and each person, if any,
who controls any Underwriter within the meaning of Section 15 of the Act or
Section 20 of the Securities Exchange Act of 1934, as amended (the "EXCHANGE
ACT"), from and against any and all losses, claims, damages, liabilities and
judgments (including, without limitation, any legal or other expenses incurred
in connection with investigating or defending any matter, including any action,
that could give rise to any such losses, claims, damages, liabilities or
judgments) caused by any untrue statement or alleged untrue statement of a
material fact contained in the Registration Statement (or any amendment
thereto), the Prospectus (or any amendment or supplement thereto) or any
preliminary prospectus, or caused by any omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the
statements therein not misleading, except insofar as such losses, claims,
damages, liabilities or judgments are caused by any such untrue statement or
omission or alleged untrue statement or omission based upon information relating
to any Underwriter furnished in writing to the Company by such Underwriter
through you expressly for use therein; provided, however, that the foregoing
indemnity agreement with respect to any preliminary prospectus shall not inure
to the benefit of any Underwriter who failed to deliver a Prospectus (as then
amended or supplemented, provided by the Company to the several Underwriters in
the requisite quantity and on a timely basis to permit proper delivery on or
prior to the Closing Date) to the person asserting any losses, claims, damages
and liabilities and judgments caused by any untrue statement or alleged untrue
statement of a material fact contained in any preliminary prospectus, or caused
by any omission or alleged omission to state therein a material fact required to
be stated therein or necessary to make the statements therein not misleading, if
such material misstatement or omission or alleged material misstatement or
omission was cured 

                                       16
<PAGE>
 
in such Prospectus and such Prospectus was required by law to be delivered at or
prior to the written confirmation of sale to such person.


     (b)  Each Underwriter agrees, severally and not jointly, to indemnify and
hold harmless the Company, its directors, its officers who sign the Registration
Statement and each person, if any, who controls the Company within the meaning
of Section 15 of the Act or Section 20 of the Exchange Act, to the same extent
as the foregoing indemnity from the Company to such Underwriter but only with
reference to information relating to such Underwriter furnished in writing to
the Company by such Underwriter through you expressly for use in the
Registration Statement (or any amendment thereto), the Prospectus (or any
amendment or supplement thereto) or any preliminary prospectus.

     (c)  In case any action shall be commenced involving any person in respect
of which indemnity may be sought pursuant to Section 7(a) or 7(b) (the
"INDEMNIFIED PARTY"), the indemnified party shall promptly notify the person
against whom such indemnity may be sought (the "INDEMNIFYING PARTY") in writing
and the indemnifying party shall assume the defense of such action, including
the employment of counsel reasonably satisfactory to the indemnified party and
the payment of all reasonable fees and expenses of such counsel, as incurred
(except that in the case of any action in respect of which indemnity may be
sought pursuant to both Sections 7(a) and 7(b), the Underwriter shall not be
required to assume the defense of such action pursuant to this Section 7(c), but
may employ separate counsel and participate in the defense thereof, but the
reasonable fees and expenses of such counsel, except as provided below, shall be
at the expense of such Underwriter).  Any indemnified party shall have the right
to employ separate counsel in any such action and participate in the defense
thereof, but the reasonable fees and expenses of such counsel shall be at the
expense of the indemnified party unless (i) the employment of such counsel shall
have been specifically authorized in writing by the indemnifying party, (ii) the
indemnifying party shall have failed to assume the defense of such action or
employ counsel reasonably satisfactory to the indemnified party or (iii) the
named parties to any such action (including any impleaded parties) include both
the indemnified party and the indemnifying party, and the indemnified party
shall have been advised by such counsel that there may be one or more legal
defenses available to it which are different from or additional to those
available to the indemnifying party.  In any such case, the indemnifying party
shall not, in connection with any one action or separate but substantially
similar or related actions in the same jurisdiction arising out of the same
general allegations or circumstances, be liable for the reasonable fees and
expenses of more than one separate firm of attorneys (in addition to any local
counsel) for all indemnified parties and all such fees and expenses shall be
reimbursed as they are incurred. Such firm shall be designated in writing by
Donaldson, Lufkin & Jenrette Securities Corporation, in the case of parties
indemnified pursuant to Section 7(a), and by the Company, in the case of 

                                       17
<PAGE>
 
parties indemnified pursuant to Section 7(b). The indemnifying party shall
indemnify and hold harmless the indemnified party from and against any and all
losses, claims, damages, liabilities and judgments by reason of any settlement
of any action (i) effected with its written consent or (ii) effected without its
written consent if the settlement is entered into more than twenty business days
after the indemnifying party shall have received a request from the indemnified
party for reimbursement for the fees and expenses of counsel (in any case where
such fees and expenses are at the expense of the indemnifying party) and, prior
to the date of such settlement, the indemnifying party shall have failed to
reimburse the indemnified party in accordance with such request for
reimbursement (other than the payment of amounts being disputed in good faith)
prior to the date of such settlement. No indemnifying party shall, without the
prior written consent of the indemnified party, effect any settlement or
compromise of, or consent to the entry of judgment with respect to, any pending
or threatened action in respect of which the indemnified party is or could have
been a party and indemnity or contribution may be or could have been sought
hereunder by the indemnified party, unless such settlement, compromise or
judgment (i) includes an unconditional release of the indemnified party from all
liability on claims that are or could have been the subject matter of such
action and (ii) does not include a statement as to or an admission of fault,
culpability or a failure to act, by or on behalf of the indemnified party.

       (d)  To the extent the indemnification provided for in this Section 7 is
unavailable to an indemnified party or insufficient in respect of any losses,
claims, damages, liabilities or judgments referred to therein, then each
indemnifying party, in lieu of indemnifying such indemnified party, shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages, liabilities and judgments (i) in such
proportion as is appropriate to reflect the relative benefits received by the
Company on the one hand and the Underwriters on the other hand from the offering
of the ADSs or (ii) if the allocation provided by clause 7(d)(i) above is not
permitted by applicable law, in such proportion as is appropriate to reflect not
only the relative benefits referred to in clause 7(d)(i) above but also the
relative fault of the Company on the one hand and the Underwriters on the other
hand in connection with the statements or omissions which resulted in such
losses, claims, damages, liabilities or judgments, as well as any other relevant
equitable considerations. The relative benefits received by the Company on the
one hand and the Underwriters on the other hand shall be deemed to be in the
same proportion as the total net proceeds from the offering (after deducting
underwriting discounts and commissions but before deducting expenses) received
by the Company, and the total underwriting discounts and commissions received by
the Underwriters, bear to the total price to the public of the ADSs, in each
case as set forth in the table on the cover page of the Prospectus. The relative
fault of the Company on the one hand and the Underwriters on the other hand
shall be determined by reference to, among other 

                                       18
<PAGE>
 
things, whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by the Company or the Underwriters and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission.

     The Company and the Underwriters agree that it would not be just and
equitable if contribution pursuant to this Section 7(d) were determined by pro
rata allocation (even if the Underwriters were treated as one entity for such
purpose) or by any other method of allocation which does not take account of the
equitable considerations referred to in the immediately preceding paragraph. The
amount paid or payable by an indemnified party as a result of the losses,
claims, damages, liabilities or judgments referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any legal or other expenses reasonably incurred by such indemnified
party in connection with investigating or defending any matter, including any
action, that could have given rise to such losses, claims, damages, liabilities
or judgments. Notwithstanding the provisions of this Section 7, no Underwriter
shall be required to contribute any amount in excess of the amount by which the
total price at which the ADSs underwritten by it and distributed to the public
were offered to the public exceeds the amount of any damages which such
Underwriter has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission or alleged omission. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation. The Underwriters' obligations to contribute
pursuant to this Section 7(d) are several in proportion to the respective number
of ADSs purchased by each of the Underwriters hereunder and not joint.

       (e)  The remedies provided for in this Section 7 are not exclusive and
shall not limit any rights or remedies which may otherwise be available to any
indemnified party at law or in equity.

     Section 8.  Conditions of Underwriters' Obligations'.  The several
obligations of the Underwriters to purchase the ADSs under this Agreement are
subject to the satisfaction of each of the following conditions:

            (a)  All the representations and warranties of the Company contained
     in this Agreement shall be true and correct on the Closing Date with the
     same force and effect as if made on and as of the Closing Date.

            (b)  The Registration Statement shall have become effective not
     later than 5:00 P.M., New York City time, on the date of this Agreement or
     at such later date and time as you may approve; and no stop order

                                       19
<PAGE>
 
     suspending the effectiveness of the Registration Statement shall have been
     issued and no proceedings for that purpose shall have been commenced or
     shall be pending before or contemplated by the Commission.

            (c)  You shall have received on the Closing Date a certificate dated
     the Closing Date, signed by Mr. Burt Keenan and Mr. John Sulley, in their
     capacities as the Executive Chairman and Managing Director of the Company,
     confirming the matters set forth in Sections 6(t), 6(v), 8(a) and 8(b) and
     that the Company has complied with all of the agreements and satisfied all
     of the conditions herein contained and required to be complied with or
     satisfied by the Company on or prior to the Closing Date.

            (d)  Since the respective dates as of which information is given in
     the Prospectus other than as set forth in the Prospectus (exclusive of any
     amendments or supplements thereto subsequent to the date of this
     Agreement), (i) there shall not have occurred any change or any development
     involving a prospective change in the condition, financial or otherwise, or
     the earnings, business, management or operations of the Company and its
     subsidiaries, taken as a whole, (ii) there shall not have been any change
     or any development involving a prospective change in the capital stock or
     in the long-term debt of the Company or any of its subsidiaries and (iii)
     neither the Company nor any of its subsidiaries shall have incurred any
     liability or obligation, direct or contingent, the effect of which, in any
     such case described in clause 8(d)(i), 8(d)(ii) or 8(d)(iii), in your
     judgment, is material and adverse and, in your judgment, makes it
     impracticable to market the ADSs on the terms and in the manner
     contemplated in the Prospectus.

            (e)  You shall have received on the Closing Date an opinion
     (satisfactory to you and counsel for the Underwriters), dated the Closing
     Date, of Masons, English counsel for the Company, to the effect that:

                  (i)  each of the Company and its subsidiaries has been duly
          incorporated and is validly existing as a public limited company, in
          the case of the Company, and a limited company, in the case of its
          subsidiaries, under the laws of England and Wales and has the power
          under its Memorandum and Articles of Association to carry on its
          business and to own, lease and operate its properties as described in
          the Prospectus;

                  (ii)  all the issued shares of the Company have been duly
          authorized and validly issued and are fully paid and not subject to
          calls for further funds, or subject to any preemptive or similar
          rights under the Company's Memorandum or Articles of 

                                       20
<PAGE>
 
          Association or English Statute, and no partner of Masons has any
          actual knowledge of any agreement or contract entered into by the
          Company which may subject the issued shares to any such preemptive or
          similar rights;

                  (iii)   the Shares have been duly authorized, and, when
          delivered to and paid for by the Underwriters, in accordance with the
          terms of this Agreement, will be duly issued and fully paid and  not
          subject to calls for further funds and will conform to the description
          thereof in the Prospectus; and the issuance and transfer of such
          Shares is not subject to any preemptive or similar right that has not
          been duly and validly waived;

                  (iv)  upon the registration in the register of members of the
          Company of the Shares underlying the ADSs in the name of the Custodian
          pursuant to the Deposit Agreement, all right, title and interest in
          such Shares, subject to the Deposit Agreement, will be transferred to
          the Depositary free and clear of all liens, encumbrances or claims;

                  (v)  all of the issued shares of each of the Company's
          subsidiaries have been duly authorized and validly issued and are
          fully paid and non-assessable, and are owned by the Company, free and
          clear of any security interest, claim, lien, encumbrance or adverse
          interest of any nature other than security in favor of Barclays Bank
          plc and Barclays Commercial Services Ltd. granted by the Company over
          its assets;

                  (vi)  this Agreement has been duly authorized, executed and
          delivered by the Company;

                  (vii)   the Deposit Agreement has been duly authorized,
          executed and delivered by the Company and constitutes a valid and
          binding agreement of the Company enforceable in accordance with its
          terms except as (i) the enforceability thereof may be limited by
          bankruptcy, insolvency or similar laws affecting creditors' rights
          generally, (ii) the availability of equitable remedies may be limited
          by equitable principles of general applicability and (iii) claims may
          be barred by relevant limitations relating to effluxion of time or may
          be subject to defenses of set off or counterclaim;

                  (viii)   the authorized share capital of the Company conforms
          as to legal matters to the description thereof contained in the
          Prospectus;

                                       21
<PAGE>
 
                  (ix) the statements (A) in the Prospectus under the captions
          "Description of Share Capital" and "Taxation" in the Prospectus and
          identified in the attached extracted sections from the Prospectus and
          (B) Item 14 of Part II of the Registration Statement, in each case
          insofar as such statements are of English law or the Memorandum and
          Articles of Association of the Company, are accurate;

                  (x)  no partner of Masons has actual knowledge of the Company
          or any of its subsidiaries being in violation of its respective
          Memorandum or Articles of Association, provided such opinion does not
          relate to Article 107 of the Articles of Association of the Company
          and, Masons has received a certificate from the Company, attached
          hereto as Exhibit __, stating that neither the Company nor any of its
          subsidiaries is in default in the performance of any agreement that is
          filed as an exhibit to the Registration Statement;

                  (xi)  the execution, delivery and performance of this
          Agreement and the Deposit Agreement by the Company, the compliance by
          the Company with all the provisions hereof and of the Deposit
          Agreement and the consummation of the transactions contemplated hereby
          and thereby will not (A) require any consent, approval, authorization
          or other order of, or qualification with, any U.K. court or
          governmental body or agency, (B) conflict with or constitute a breach
          of any of the terms or provisions of, or a default under, the
          Memorandum or Articles of Association of the Company or any of its
          subsidiaries or any agreement that is filed as an exhibit to the
          Registration Statement, or (C) violate or conflict with any applicable
          law affecting the Company, any of its subsidiaries or their respective
          property;

                  (xii)   Masons is not instructed to act in any legal or
          governmental proceedings pending or threatened to which the Company or
          any of its subsidiaries is or could be a party or to which any of
          their respective property is or could be subject which, if determined
          adversely to the Company or any such subsidiary could individually or
          in the aggregate be expected to have a material adverse effect on the
          Company and its subsidiaries, taken as a whole;

                  (xiii)   in order to ensure the legality, validity,
          enforceability or admissibility in evidence of this Agreement and the
          Deposit 

                                       22
<PAGE>
 
          Agreement in England, it is not necessary that any document be filed,
          recorded or enrolled with any public authority, governmental agency or
          governmental department of England;

                  (xiv)   the Company has the power to submit and has taken all
          necessary corporate action to submit, to the non-exclusive
          jurisdiction of any United States Federal or state court in the County
          of New York, State of New York and to appoint CT Corporation System as
          the authorized agent of the Company, in each case with respect to
          legal proceedings in the United States; and there is no provision of
          English law which would render service of process invalid with respect
          to legal proceedings in the United States;

                  (xv)  the Company can sue and be sued under its own name in
          England and Wales;

                  (xvi)   under the laws of England and under current practice
          of courts in England, (A) the Underwriters would be permitted to
          commence proceedings against the Company in English courts based on
          actions under this Agreement, (B) the Depositary would be permitted to
          commence proceedings against the Company in English courts based on
          actions under the Deposit Agreement, (C) the owners of ADSs issued
          under the Deposit Agreement would be permitted to commence proceedings
          against the Company in English courts based on actions under the
          Deposit Agreement and (D) such courts in England would accept
          jurisdiction over any such action or proceedings, subject to any
          application being made by the Company to stay proceedings on the
          grounds of forum non-conveniens;

                  (xvii)   under the laws of England, the choice of the law of
          the State of New York as the law expressed to govern this Agreement
          and the Deposit Agreement is valid and binding on the Company and the
          courts of England will give effect to each such choice of law upon
          proof of the relevant provisions of such foreign laws, subject,
          however, to the qualification that foreign laws will not be applied to
          the extent contrary to English public policy; any judgment obtained in
          a New York court arising out of or based upon this Agreement that is
          for a definite sum of money, is given on the merits and is recognized
          as final and conclusive would be enforceable against the Company in
          the courts of England, provided that: (A) the judgment was not
          obtained by fraud, (B) recognition or enforcement of the judgment is
          not contrary to 

                                       23
<PAGE>
 
          English public policy or in breach of the rules of natural justice,
          and is not contrary to the provisions of the Protection of Trading
          Interests Act 1980, (C) the judgment does not cover matters which
          relate to issues raised in proceedings in England or which have
          previously been determined by an English court, and (D) the judgment
          does not determine the proprietary or possessory rights in immovable
          property situated outside the State of New York.

                  (xviii)   except as may be described in the Prospectus under
          the heading "Taxation", under the laws of England, cash dividends and
          other distributions declared and payable in English sterling may be
          converted into any other convertible currency in England and may be
          transferred from England, and all such dividends made to holders of
          the ADSs who are non-residents of England and not ordinarily resident
          in the UK may be made without the necessity of obtaining any consents,
          approvals, authorizations, orders or clearances from or registering
          with any English governmental agency or body or any stock exchange
          authority;

                  (xix)   other than as set forth or contemplated in the
          Prospectus, no ad valorem stamp duty, stamp duty reserve tax or issue,
          documentary, certification or other similar tax imposed by any
          government department or other taxing authority of or in the United
          Kingdom is payable in connection with (A) the deposit with the
          Depositary or the Custodian of Shares against the issuance of the ADRs
          evidencing ADSs in accordance with the Deposit Agreement, (B) the
          issue of the ADSs by the Depositary to the Underwriters in accordance
          with the terms of this Agreement or (C) the sale by the Underwriters
          of the ADSs to the initial purchasers thereof in either case in
          accordance with the terms of this Agreement and in the manner
          contemplated in the Prospectus;

                  (xx)  the Extraordinary General Meeting of the Company
          convened for and held on July 2, 1998 (the "EGM") was duly convened
          and held in accordance with all applicable laws, including but not
          limited to the provisions of the Memorandum and Articles of
          Association of the Company and the Notice convening the EGM and the
          accompanying letter to shareholders contained all necessary
          information to ensure that the resolutions to be proposed at the EGM
          could be proposed, considered and passed at the EGM in accordance with
          all applicable laws and the Company's Memorandum and Articles of
          Association and such resolutions were in fact so proposed, considered
          and passed by the requisite majority of holders of shares in
          accordance with the provisions of 

                                       24
<PAGE>
 
          the Companies Act 1985 (as amended), the Company's Memorandum of
          Association and all other applicable laws;

               In giving such opinion, such counsel will state that it has not
          investigated the laws of any jurisdiction other than England and the
          European Union as it applies in the U.K. as they stand and have been
          interpreted in published case law of the courts in England and of the
          European Union as of the date of such opinion, and that it does not
          express or imply an opinion on the laws of any other jurisdiction.

            (f)  The Underwriters shall have received on the Closing Date an
     opinion of Akin, Gump, Strauss, Hauer & Feld, L.L.P., U.S. counsel for the
     Company, dated the Closing Date, substantially in the form attached hereto
     as Exhibit __.

            (g)  You shall have received on the Closing Date an opinion, dated
     the Closing Date, of Davis Polk & Wardwell, counsel for the Underwriters,
     in such form as is reasonably satisfactory to you.

               (h)  Emmet, Marvin & Martin, LLP, counsel for the Depositary,
          shall have furnished to you their written opinion, dated such Closing
          Date, in form and substance satisfactory to you, substantially to the
          effect that:

                  (i)  The Deposit Agreement has been duly authorized, executed
          and delivered by the Depositary and, assuming due authorization,
          execution and delivery by the Company and further assuming that the
          Deposit Agreement is a valid and binding agreement of the Company,
          constitutes a valid and legally binding obligation of the Depositary;

                  (ii)  Upon the issuance by the Depositary of ADRs evidencing
          ADSs against the deposit of the Shares in accordance with the
          provisions of the Deposit Agreement (assuming such Ordinary Shares
          were, at the time of such deposit, (a) duly authorized and validly
          issued, fully paid and non-assessable and (b) registered in compliance
          with the Act), such ADRs will be duly and validly issued and will
          entitle the holders thereof to the rights specified therein and in the
          Deposit Agreement; and

                                       25
<PAGE>
 
                  (iii)  The ADS Registration Statement has been filed on Form
          F-6 and has been declared effective under the Act and, to the best of
          such counsel's knowledge, no stop order suspending the effectiveness
          of the ADS Registration Statement or any part thereof has been issued
          and no proceedings for that purpose have been instituted or are
          pending or contemplated under the Act, and the ADS Registration
          Statement, and each amendment as of their respective effective dates,
          complied as to form and in all material respects with the requirements
          of the Act and the rules and regulations thereunder.

            (i)   You shall have received, on each of the date hereof and the
     Closing Date, a letter dated the date hereof or the Closing Date, as the
     case may be, in form and substance satisfactory to you, from Pannell Kerr
     Forster, chartered public accountants, containing the information and
     statements of the type ordinarily included in accountants' "comfort
     letters" to Underwriters with respect to the financial statements and
     certain financial information contained in the Registration Statement and
     the Prospectus.

            (j)   The Company shall have delivered to you the agreements
     specified in Section 2 hereof which agreements shall be in full force and
     effect on the Closing Date.

            (k)   The ADSs shall have been duly listed for quotation, subject to
     notice of issuance, on the Nasdaq National Market.

            (l)   The Depositary shall have furnished or caused to be furnished
     to you on the Closing Date evidence satisfactory to you evidencing the
     deposit with it of the Ordinary Shares being so deposited against issuance
     of ADRs evidencing the ADSs to be delivered by the Company at the Closing
     Date, and the execution, countersignature (if applicable), issuance and
     delivery of ADRs evidencing such ADSs pursuant to the Deposit Agreement.

            (m)   The Company shall not have failed on or prior to the Closing
     Date to perform or comply with any of the agreements herein contained and
     required to be performed or complied with by the Company on or prior to the
     Closing Date.

            (n)   Any preemptive or other such rights granted to the Company's
     shareholders shall be duly and validly waived by such shareholders in
     accordance with all applicable law in order to complete the offering, sale
     and delivery of the ADSs contemplated hereby.

                                       26
<PAGE>
 
     The several obligations of the Underwriters to purchase any Additional ADSs
hereunder are subject to the delivery to you on the applicable Option Closing
Date of such documents as you may reasonably request with respect to the good
standing of the Company, the due authorization and issuance of such Additional
ADSs and other matters related to the issuance of such Additional ADSs.

     Section 9.  Effectiveness of Agreement and Termination.  This Agreement
shall become effective upon the execution and delivery of this Agreement by the
parties hereto.

     This Agreement may be terminated at any time on or prior to the Closing
Date by you by written notice to the Company if any of the following has
occurred: (i) any outbreak or escalation of hostilities or other national or
international calamity or crisis or change in economic conditions or in the
financial markets of the United States or elsewhere that, in your judgment, is
material and adverse and, in your judgment, makes it impracticable to market the
ADSs on the terms and in the manner contemplated in the Prospectus, (ii) the
suspension or material limitation of trading in securities or other instruments
on the New York Stock Exchange, the American Stock Exchange, the Chicago Board
of Options Exchange, the Chicago Mercantile Exchange, the Chicago Board of
Trade, the Nasdaq National Market, The London Stock Exchange or the Alternative
Investment Market of the London Stock Exchange or limitation on prices for
securities or other instruments on any such exchange or trading system, (iii)
the suspension of trading of any securities of the Company on any exchange,
over-the-counter market or trading system, (iv) the enactment, publication,
decree or other promulgation of any federal or state statute, regulation, rule
or order of any court or other governmental authority which in your opinion
materially and adversely affects, or will materially and adversely affect, the
business, prospects, financial condition or results of operations of the Company
and its subsidiaries, taken as a whole, (v) the declaration of a banking
moratorium by either federal, New York State or English authorities or (vi) the
taking of any action by any federal, state or local government or agency in
respect of its monetary or fiscal affairs which in your opinion has a material
adverse effect on the financial markets in the United States or the United
Kingdom.

     If on the Closing Date or on an Option Closing Date, as the case may be,
any one or more of the Underwriters shall fail or refuse to purchase the Firm
ADSs or Additional ADSs, as the case may be, which it has or they have agreed to
purchase hereunder on such date and the aggregate number of Firm ADSs or
Additional ADSs, as the case may be, which such defaulting Underwriter or
Underwriters agreed but failed or refused to purchase is not more than one-tenth
of the total number of Firm ADSs or Additional ADSs, as the case may be, to be
purchased on such date by all Underwriters, each non-defaulting Underwriter
shall 

                                       27
<PAGE>
 
be obligated severally, in the proportion which the number of Firm ADSs set
forth opposite its name in Schedule I bears to the total number of Firm ADSs
which all the non-defaulting Underwriters have agreed to purchase, or in such
other proportion as you may specify, to purchase the Firm ADSs or Additional
ADSs, as the case may be, which such defaulting Underwriter or Underwriters
agreed but failed or refused to purchase on such date; provided that in no event
shall the number of Firm ADSs or Additional ADSs, as the case may be, which any
Underwriter has agreed to purchase pursuant to Section 2 hereof be increased
pursuant to this Section 9 by an amount in excess of one-ninth of such number of
Firm ADSs or Additional ADSs, as the case may be, without the written consent of
such Underwriter. If on the Closing Date any Underwriter or Underwriters shall
fail or refuse to purchase Firm ADSs and the aggregate number of Firm ADSs with
respect to which such default occurs is more than one-tenth of the aggregate
number of Firm ADSs to be purchased by all Underwriters and arrangements
satisfactory to you and the Company for purchase of such Firm ADSs are not made
within 48 hours after such default, this Agreement will terminate without
liability on the part of any non-defaulting Underwriter and the Company. In any
such case which does not result in termination of this Agreement, either you or
the Company shall have the right to postpone the Closing Date, but in no event
for longer than seven days, in order that the required changes, if any, in the
Registration Statement and the Prospectus or any other documents or arrangements
may be effected. If, on an Option Closing Date, any Underwriter or Underwriters
shall fail or refuse to purchase Additional ADSs and the aggregate number of
Additional ADSs with respect to which such default occurs is more than one-tenth
of the aggregate number of Additional ADSs to be purchased on such date, the 
non-defaulting Underwriters shall have the option to (i) terminate their
obligation hereunder to purchase such Additional ADSs or (ii) purchase not less
than the number of Additional ADSs that such non-defaulting Underwriters would
have been obligated to purchase on such date in the absence of such default. Any
action taken under this paragraph shall not relieve any defaulting Underwriter
from liability in respect of any default of any such Underwriter under this
Agreement.

     Section 10.  Miscellaneous.  Notices given pursuant to any provision of
this Agreement shall be addressed as follows: (i) if to the Company, to
Independent Energy Holdings plc, Dominion Court, 43 Station Road, Solihull, West
Midlands B91 3RT and (ii) if to any Underwriter or to you, to you c/o Donaldson,
Lufkin & Jenrette Securities Corporation, 277 Park Avenue, New York, New York
10172, Attention: Syndicate Department, or in any case to such other address as
the person to be notified may have requested in writing.

     The respective indemnities, contribution agreements, representations,
warranties and other statements of the Company and the several Underwriters set
forth in or made pursuant to this Agreement shall remain operative and in full

                                       28
<PAGE>
 
force and effect, and will survive delivery of and payment for the ADSs,
regardless of (i) any investigation, or statement as to the results thereof,
made by or on behalf of any Underwriter, the officers or directors of any
Underwriter, any person controlling any Underwriter, the Company, the officers
or directors of the Company or any person controlling the Company, (ii)
acceptance of the ADSs and payment for them hereunder and (iii) termination of
this Agreement.

     If for any reason the ADSs are not delivered by or on behalf of the Company
as provided herein (other than as a result of any termination of this Agreement
pursuant to Section 9), the Company agrees to reimburse the several Underwriters
for all out-of-pocket expenses (including the reasonable fees and disbursements
of counsel) incurred by them. Notwithstanding any termination of this Agreement,
the Company shall be liable for all expenses which it has agreed to pay pursuant
to Section 5(j) hereof. The Company also agrees to reimburse the several
Underwriters, their directors and officers and any persons controlling any of
the Underwriters for any and all reasonable fees and expenses (including,
without limitation, the reasonable fees disbursements of counsel) incurred by
them in connection with enforcing their rights hereunder (including, without
limitation, pursuant to Section 7 hereof).

     Except as otherwise provided, this Agreement has been and is made solely
for the benefit of and shall be binding upon the Company, the Underwriters, the
Underwriters' directors and officers, any controlling persons referred to
herein, the Company's directors and the Company's officers who sign the
Registration Statement and their respective successors and assigns, all as and
to the extent provided in this Agreement, and no other person shall acquire or
have any right under or by virtue of this Agreement. The term "successors and
assigns" shall not include a purchaser of any of the Shares from any of the
several Underwriters merely because of such purchase.

     Each party to this Agreement hereby irrevocably agrees that any legal suit,
action or proceeding brought by any Underwriter or by any person controlling any
Underwriter within the meaning of either Section 15 of the Securities Act or
Section 20 of the Securities Exchange Act of 1934, as amended, arising out of or
based upon this Agreement or the transactions contemplated hereby may be
instituted in any state or federal court in the County of New York, the State of
New York, United States of America, and irrevocably waives, to the fullest
extent permitted by law, any objection which such party may now or hereafter
have to the laying of the venue in such courts of any such suit, action or
proceeding, and irrevocably submits to the non-exclusive jurisdiction of any
such court in any such suit, action or proceeding. Each party waives any
immunity to jurisdiction to which such party may otherwise be entitled or become
entitled (including immunity to pre-judgment attachment and execution) in any
legal suit, action or proceeding against such party arising out of this
Agreement or the transactions

                                       29
<PAGE>
 
contemplated hereby which is instituted in any state or federal court in the
County of New York, the State of New York, United States of America, or in any
foreign court.  To the extent permitted by law, each party hereby waives any
objection to the enforcement by any competent foreign court of any judgment
validly obtained in any such proceeding.  Each party hereby designates and
appoints CT Corporation System, 1633 Broadway, New York, NY 10001 as the
authorized agent of such party (the "Authorized Agent") to accept and
acknowledge on behalf of such party service of any and all process which may be
served in any such suit, action or proceeding in any such court.  Such
appointments shall be irrevocable subject to the appointment of a successor
agent in the United States on terms substantially similar to those contained in
this Section 11 as reasonably satisfactory to DLJ.  Each party agrees that
service of process upon the Authorized Agent of such party at such address (or
such other address in the United States as the parties may designate by written
notice to the Representatives) and written notice of such service to such party
shall be deemed in every respect effective service of process upon such party.
Each party represents and warrants that the Authorized Agent of such party has
agreed to act as said agent for service of process and agrees to take all action
that may be necessary to continue such appointment (or the appointment of a
successor agent in the United States). Notwithstanding the foregoing, any action
arising out of or based on this Agreement or the transactions contemplated
hereby may be instituted by any Underwriter or by any person controlling any
Underwriter within the meaning of either Section 15 of the Securities Act or
Section 20 of the Exchange Act in any competent foreign court.

     This Agreement shall be governed and construed in accordance with the laws
of the State of New York.

     This Agreement may be signed in various counterparts which together shall
constitute one and the same instrument.

                                       30
<PAGE>
 
     Please confirm that the foregoing correctly sets forth the agreement
between the Company and the several Underwriters.

                                 Very truly yours,
        
                                 INDEPENDENT ENERGY HOLDINGS plc



                                 By:
                                    ---------------------------------    
                                    Title:
                                          ---------------------------

DONALDSON, LUFKIN & JENRETTE 
  SECURITIES CORPORATION
JOHNSON RICE & COMPANY L.L.C.
SOUTHCOAST CAPITAL L.L.C.

Acting severally on behalf of themselves and the 
  several Underwriters named in Schedule I 
  hereto

By:  DONALDSON, LUFKIN & JENRETTE 
        SECURITIES CORPORATION



By:
   ----------------------------------------------------
   Title:

                                       31
<PAGE>
 
                                                                      SCHEDULE I



 
                    
                    UNDERWRITERS                           NUMBER OF FIRM ADs
                                                             TO BE PURCHASED

                                        
 
Donaldson, Lufkin & Jenrette Securities 
           Corporation

Johnson Rice & Company L.L.C.

Southcoast Capital L.L.C.

 
 
         Total



<PAGE>
 
                                                                       EXHIBIT 5

                                 21  July 1998

Independent Energy Holdings plc
Dominion Court
43 Station Road
Solihull, West Midlands
B91 3RT

Dear Sirs:

     We have acted as solicitors in England to Independent Energy Holdings plc
(the "Company") and have been requested by the Company to give this opinion in
connection with the Registration Statement on Form F-1 filed with the United
States Securities and Exchange Commission by the Company for the purposes of
registering under the United States Securities Act of 1933 (the "Securities
Act") Ordinary Shares of 1p each.

     For the purposes of this opinion words and phrases used but not defined
herein shall have the same meaning as those contained in the Prospectus.

     We are of the opinion that:

(a)  the Ordinary Shares, once allotted and issued by the Company and fully paid
     for by the Underwriters, will be duly authorized and validly issued and
     fully paid and will not be subject to calls for further funds;

(b)  the statement in the section of the Prospectus headed "Service of Process
     and Enforcement of Liabilities" in relation to advice provided by this firm
     as to the enforceability in the United Kingdom is correct;

(c)  the statements in the Prospectus under the heading "Taxation" (in respect
     only of UK taxation), in each case so far as such statements constitute
     summaries of the legal matters, documents or proceedings referred to
     therein, fairly represent the information called for with respect to such
     legal matters, documents and proceedings and fairly summarize the matters
     referred to therein.

     We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the references to us under the captions
"Enforcement of Liabilities" and "Legal Matters" contained in the Prospectus.

                         Yours truly,


                         Masons Solicitors

<PAGE>
 
                                                                     EXHIBIT 8.2
                                 July 21, 1998



Independent Energy Holdings plc
Dominion Court
43 Station Road
Solihull, West Midlands B91 3RT
United Kingdom

Dear Sirs:

     We are acting as United States counsel to Independent Energy Holdings plc
(the "Company") in connection with the Registration Statement on Form F-1 (the
"Registration Statement") filed with the United States Securities and Exchange
Commission by the Company for the purpose of registering under the United States
Securities Act of 1933, as amended (the "Act"), certain of the Company's
Ordinary Shares, nominal value 1p per share, in connection with an offering by
the Company of American Depositary Shares.

     We hereby confirm, in all material respects, our advice with respect to
United States federal tax laws contained in the Prospectus included in the
Registration Statement under the caption "Taxation."

     We hereby consent to the use of our name under the caption "Taxation" and
"Legal Matters" in the Prospectus included in the Registration Statement and to
the filing, as an exhibit to the Registration Statement, of this letter.  In
giving such consent we do not admit that we come within the category of persons
whose consent is required under Section 7 of the Act.

                                       Very truly yours,

                                       AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P.

<PAGE>
 
                                                                    EXHIBIT 10.9

                         [BARCLAYS CAPITAL LETTERHEAD]



John Sulley
Independent Energy UK Limited
Dominion Court, 43 Station Road
Solihull
West Midlands B91 3RT

FAX:  01 21 705 1991

4 June 1998

Dear John:

CREDIT AGREEMENT DATED 5 SEPTEMBER 1997 BETWEEN INDEPENDENT ENERGY UK LIMITED
AND BARCLAYS BANK PLC (THE "CREDIT AGREEMENT")


     Further to our recent correspondence, we hereby confirm our agreement to an
amendment of the following term of the Credit Agreement.

   .   amend the figure contained in Clause I (Interpretation) under the
       definition of Total Commitments from (Pounds)5,000,000 to
       (Pounds)8,000,000.

     We will also need to amend the automatic cancellation/reduction schedule
contained within Clause 7.4(a) and suggest that this be done once we have had
sight of cashflows relating to the proposed new Borrowing Base Projects.  In the
meantime, we would propose that for the purpose of the semi-annual Reduction
Date we continue with the existing reduction profile, treating Total Commitments
as currently documented in the Credit Agreement.

     As discussed, our fee for agreeing to the above amendment is (Pounds)30,000
payable within 10 business days from the date of this letter.

     Please would you sign, date and return the enclosed copy of this letter as
confirmation of your agreement to the above.


Yours sincerely,
/s/ Colin Bousfield
Colin Bousfield                 Agreed by :  /s/ John Sulley
                                            ---------------
Director
Energy Finance                  Date: 16 July 1998
                                     ------------

<PAGE>
 
                                                                   EXHIBIT 10.10

                             [BARCLAYS LETTERHEAD]



PRIVATE AND CONFIDENTIAL
- ------------------------


The Directors
Independent Energy (UK) Limited
Dominion Court
43 Station Road
Solihull B91 3RT                                                 15 July 1998

Dear Sirs:


     This Letter of Variation should be read in conjunction with our original
Facility Letter dated 24th March 1998 and Letters of Variation respectively
dated 2nd April 1998 and 26th June 1998.

     I am pleased to confirm the agreement of the Bank to the temporarily
increase in the overdraft limit to a level of (Pounds)6.0M until the 31st July
1998 whereupon such overdraft limit will reduce to a level of (Pounds)1.5M
through to expiry on the 17th March 1999.  This remains of course subject to the
usual overriding condition that such overdraft facilities are repayable upon
receipt of the Bank's written demand at any time.

     In addition, the Stand-By Letter of Credit line is forthwith increased to
(Pounds)17.00M through to the same date of the 17th March 1999.  This is however
solely to facilitate the requirement whereby the Bank are to provide a
(Pounds)7M guarantee in favour of Vertex Data Science Ltd which in turn will
only be issued under full cash collateral and for a maximum of a two year term.
This cash collateral condition will be subject to review once the company is in
a position to evidence that they have met the levels of turnover required within
the underlying contract with Vertex.  Please re-contact us when such new bank
guarantee is required.

     Assuming that the aforementioned details meet with your approval, would you
please signify your acceptance of this further variation by arranging for the
attached duplicate of this letter to be suitably acknowledged and returned to me
as soon as possible, together with a copy of the supporting Board Resolution, a
specimen of which is also enclosed.


Yours faithfully,

/s/ DR Ashton

DR ASHTON
SENIOR CORPORATE MANAGER

<PAGE>
 
                                                                   EXHIBIT 10.12

                        MASTER FINANCE LEASE AGREEMENT



PARTIES:

1.  "The Lessor": DEBIS FINANCIAL SERVICES LIMITED (registered number 2997555)
    whose registered office is at Marlborough Court, Sunrise Parkway, Linford
    Wood, Milton Keynes, MK14 6YR (together with its assigns and successors in
    title).

2.  "The Lessee": INDEPENDENT ENERGY UK LIMITED (registered no 3033406) whose
    registered office is at St. John's Court, 70 St. John's Close, Knowle,
    Solihull, West Midlands, B93 0NN (together with its permitted assigns and
    successors in title).
<PAGE>
 
1.   INTERPRETATION

1.1  In this Master Finance Lease Agreement and in any Equipment Lease Contract
     (as hereinafter defined) except where the context otherwise requires the
     following expressions shall have the following meanings:

     "BUSINESS DAY" means a day on which banks in London are open for business

     "COMMENCEMENT DATE" means the date specified in the relevant Equipment
     Lease Contract as the date on which the Primary Period commences

     "DEFAULT RATE" means the Finance House Base Rate plus 5.00 per cent annum
     and calculated on a day to day basis

     "EQUIPMENT" means the equipment described in each any and (as the context
     requires) every Equipment Lease Contract for the time being in force
     between the Lessor and the Lessee and as may be further referred to in the
     Acceptance Certificate and all replacements and renewals of such equipment
     and the component parts thereof and all accessories and additions thereto.
     References herein to the Equipment shall (where the context so permits) be
     construed as including a reference to any item thereof.

     "EQUIPMENT LEASE CONTRACT" means any agreement between the Lessor and the
     Lessee from time to time in force for the leasing of the Equipment
     specified in such agreement and which is expressed to be an Equipment Lease
     Contract under this Master Agreement.

     "LESSOR'S COST" means the capital expenditure incurred by the Lessor on the
     acquisition of the Equipment the amount of which is indicated in the
     Equipment Lease Contract

     "LOCATION" means the site designated in the Equipment Lease Contract as the
     location at which the Equipment will be installed

     "MANUFACTURER" means the manufacturer or supplier of the Equipment

     "PERIOD OF HIRE" means the Primary Period and any Secondary Period

     "PRIMARY PERIOD" means the primary period of leasing specified in each
     Equipment Lease Contract

     "RESIDUAL PERCENTAGE" means in respect of each Equipment Lease Contract the
     percentage figure stated in that Equipment Lease Contract

     "SECONDARY PERIOD" means the secondary period of leasing commencing on the
     expiry of the Primary Period and referred to in clause 2.5. below.

                                       2
<PAGE>
 
2.   THE HIRE

2.1  If at any time now or hereafter the Lessor and the Lessee shall enter into
     any Equipment Lease Contract for the leasing by the Lessee of any Equipment
     the terms of this Master Agreement shall, save insofar as the same may be
     expressly excluded contradicted or varied by the terms of that Equipment
     Lease Contract, be incorporated into and govern the Equipment Lease
     Contract.

2.2  A breach of this Master Agreement or of any Equipment Lease Contract for
     the time being in force shall be deemed to be a breach of this Master
     Agreement and of each and every Equipment Lease Contract then in force
     between the parties hereto.

2.3  Save as otherwise provided in this Master Agreement each Equipment Lease
     Contract shall with the terms of this Master Agreement by a separate
     agreement for the leasing of the Equipment therein described, and without
     prejudice to the generality of the foregoing, sums payable pursuant to or
     in respect of any Equipment Lease Contract shall be calculated assessed and
     paid independently of and without regard to any other Equipment Lease
     Contracts.

2.4  The leasing of the Equipment specified in each Equipment Lease Contract
     shall commence on the Commencement Date and shall continue for the Primary
     Period and thereafter for the Secondary Period subject to termination as
     herein or therein provided.

2.5  Provided that the Lessee has fully complied with all its obligations
     hereunder and has not committed a breach of this Master Agreement the
     Lessee may elect to continue to take on lease the Equipment after the
     expiration of the Primary Period for one or more successive periods of one
     year (not exceeding the number of years specified in the relevant Equipment
     Lease Contract) such election to be exercisable by the Lease giving to the
     Lessor not less than three months prior written notice expiring on or
     before the last day of the Primary Period or nay extension thereof (as the
     case may be).  No notice once served may be withdrawn or cancelled by the
     Lessee without the prior consent in writing of the Lessor.  In the event of
     any such extension the provisions of this Master Agreement shall continue
     in full force and effect save that the rentals then payable shall be at the
     rates specified for this purpose in the relevant Equipment Lease Contract.

3.   DELIVERY AND INSTALLATION OF EQUIPMENT

3.1  The Lessor hereby appoints the Lessee to be its agent to receive delivery
     of the Equipment from the Manufacturer and to inspect and to accept or to
     reject the same.  The Lessee shall accept delivery of the Equipment upon
     notification from the Lessor or the Manufacturer that the Equipment is
     ready for delivery.  If the Lease shall refuse or be unable for any reason
     to accept delivery within 28 days after the said notification the Lessor
     shall be entitled to terminate the relevant Equipment Lease Contract and
     the 

                                       3
<PAGE>
 
     Lessee shall indemnify the Lessor against any losses or expenses thereby
     suffered or incurred.

3.2  The Lessee will at its own expense and in sufficient time to facilitate
     delivery of the Equipment suitably prepare the Location for installation of
     the Equipment providing all (if any) necessary electrical and other
     connections fittings and facilities as recommended by the Manufacturer.

3.3  The Lessee shall afford to the manufacturer or its representatives all
     facilities reasonably required by it to enable delivery and installation of
     the Equipment to take place and if so required will permit the Lessor to
     oversee the same.

4.   ACCEPTANCE

4.1  It shall be a precondition to the commencement of lease of each Equipment
     Lease Contract that the Lessee shall deliver to the Lessor a Certificate of
     Acceptance signed by the Lessee in the form annexed to the Equipment Lease
     Contract.  Such Certificate shall be in addition to any certificate or
     acknowledgement that may be received by or given to the Manufacturer and it
     shall be presumed as between the Lessee and the Lessor that the Equipment
     was properly and punctually delivered in good repair and satisfactory order
     and that it has been duly accepted by the Lessee and shall be subject to
     all the terms and conditions of the leasing hereof.

4.2  If at the request of the Lessee the Lessor shall have acquired an interest
     in the Equipment or has become liable to the Manufacturer in respect of any
     Equipment with a view to such Equipment being made the subject of an
     Equipment Lease Contract the Lessee agrees that if such Equipment is
     delivered to it before the relevant Equipment Lease Contract is entered
     into or comes into effect it will hold insure and otherwise deal with such
     Equipment in all respects as if the Primary Period had commenced.

5.   RENTAL

5.1  The Lessee shall pay to the Lessor in respect of the leasing of Equipment
     under an Equipment Lease Contract during the Period of Hire the rental and
     other payments in the amounts and at the intervals specified in such
     Equipment Lease Contract. Payment shall be due without previous demand or
     invoice and shall be made so as to be received by the Lessor in cleared
     funds on its due date. If the date on which any amount is payable by the
     Lessee shall not be a Business Day such amount shall be paid by the Lessee
     on the next subsequent day which is a Business Day. Time shall be of the
     essence in respect of the payment of all sums due hereunder and the Lessee
     shall be deemed to have repudiated this Master Agreement and all Equipment
     Lease Contracts if any rental or other payment remains unpaid for 14 days
     or more after the same becomes due for payment. The Lease shall pay
     interest on a day-to-day basis at the Default Rate on all amounts overdue
     until payment thereof and the rights of the Lessor hereunder shall not in
     any way be affected by any time or other indulgence that the Lessor may
     grant to the Lessee. Payment shall 

                                       4
<PAGE>
 
     be made to the Lessor by direct debit or as the Lessor may otherwise
     direct. Any payment agreed to be made by post shall be at the sole risk of
     the Lessee.

5.2  For the purposes of this Master Agreement and each Equipment Lease Contract
     and references to rent or rental shall mean and include:

     5.2.1  the amounts of rent specified in each Equipment Lease Contract
            adjusted (if applicable) by the provisions of clause 5.3 or 5.4
            below; plus

     5.2.2  an amount equal to any costs and expenses involved in any foreign
            currency exchange, taxes (including VAT) or imposts now or hereafter
            levied or based, on the said rents, this Master Agreement or the
            Equipment its use ownership or acquisition and any imposts, taxes,
            license duties, registration fees and any other charges of a like
            nature howsoever described or amounts in lieu thereof paid or
            payable by the Lessor (other than taxes of the Lessor in respect of
            the overall net profits of the Lessor and other than VAT payable by
            the Lessor on its purchase of the Equipment unless that VAT is not
            recoverable)

5.3  If after the date hereof (other than by reason of insufficiency of profits
     of the Lessor or by virtue of any deliberate or negligent act or omission
     of the Lessor):

     5.3.1  there is a change in the nature method or basis of taxation or in
            the interpretation thereof or in the nature or availability of
            capital allowances applicable to the Lessor in the United Kingdom;
            and/or

     5.3.2  there is not made available to the Lessor for its accounting period
            current on the date on which its expenditure on the Equipment is
            incurred a first year allowance in respect of that expenditure equal
            to 25 per cent of the whole of the Lessor's Cost; and /or

     5.3.3  for each relevant subsequent accounting period of the Lessor such
            expenditure (less the said first year allowance and any writing down
            allowances previously made available to the Lessor for earlier
            accounting periods in respect of the Lessor's Cost) is not similarly
            treated as qualifying expenditure incurred by the Lessor; and/or

     5.3.4  for each such subsequent accounting period there is not made
            available to the Lessor without dispute or delay a writing down
            allowance in accordance with (Pounds)24(2) of the Capital Allowances
            Act 1990 at the annual rate specified in the relevant Equipment
            Lease Contract; and/or

     5.3.5  the Lessor is unable for any reason whatsoever to utilize in full as
            an allowance in taxing its trade, set off in full against its
            profits of any description, or surrender in full (by way of group
            relief) to another member of its group an amount equal to the first
            year allowance and/or writing down allowance which would be
            available 

                                       5
<PAGE>
 
            in any particular accounting period if none of 5.3.2 to 5.3.4
            applied in such manner and at such time or times as the Lessor may
            select; and/or

     5.3.6  the Internal Revenue at any time disallows or withdraws in whole or
            in part the said first year allowance and/or any such writing down
            allowance or postpones disputes disallows or withdraws the ability
            of the Lessor to effect the utilization, set off or (as applicable)
            surrender referred to in clause 5.3.5; and/or

     5.3.7  any legislation passed after the date hereof requires the accounting
            period of the Lessor (or, where an amount equal to the writing down
            allowance has been surrendered by way of group relief to another
            member of the Lessor's group, that member of the Lessor's group)
            which is current at the date hereof or any subsequent accounting
            period to end other than on the same day in the year in which the
            immediately preceding accounting period ended or alters the date on
            which tax (of whatever description) is payable by the Lessor or by
            the member of the Lessor's group; and/or

     5.3.8  there is any change in the rate of corporation tax resulting in that
            rate differing from that set out in the Equipment Lease Contract
            (references therein to the rate of corporation tax being to the rate
            fixed for companies generally and not to the small companies rate);

     and as a result the Lessor's return on its investment in the letting of the
     Equipment is reduced then the Lessor may after giving to the Lessee not
     less than 14 days' notice to that effect adjust the rentals not then due
     but which fall to be paid hereunder during the balance of the Primary
     Period and/or make a retrospective adjustment to any rentals which have
     already been paid during the Primary period in each case of such an amount
     as the Lessor may from time to time certify is necessary to maintain the
     Lessor's net after-tax return on its investment (calculated by the
     actuarial after tax method on funds invested from time to time in the
     lease) at the same level as it would have been if such events had not
     occurred, such certificate in the absence of manifest error to be
     conclusive and binding on the Lessee.  If any such adjustment takes place
     after the expiry of the Primary Period or is made to payments of rental
     already made, it shall be expressed as a single payment of additional
     rental and be due forthwith on demand.

5.4  The Lessee acknowledges that in circumstances where part V of any Equipment
     Lease Contract has been completed, the rental payable during the Primary
     Period of that Equipment Lease Contract will have been calculated by
     reference to the Finance House Base Rate ("FHBR") and on the assumption
     that on or about each Rental Payment Date (as hereinafter defined) that
     rate is the Assumed Rate (as defined in the said Part V).  In those
     circumstances, the following provisions of this clause 5.4 shall apply:

     5.4.1  for the purposes of this clause 'Rental Payment Date' shall mean the
            date on which each payment of rental falls due for payment in
            accordance with the provisions of clause 5.1 above and 'Rental
            Period' shall mean the period commencing on each 

                                       6
<PAGE>
 
            Rental Payment Date and expiring on the date immediately preceding
            the next Rental Payment Date;

     5.4.2  subject to the provisions of clause 5.4.4 below on each Rental
            Payment Date the rentals payable for the Rental Period commencing on
            that date shall be adjusted by reference to FHBR prevailing at the
            beginning of each calendar month of that Rental Payment Date in the
            following manner, that is to say:

     At the beginning of each calendar month of the Period of Hire the FHBR in
     force on that day shall be ascertained, and if the FHBR is lower than or
     higher than the Assumed Rate of interest then the rentals shall be adjusted
     by multiplying the capital outstanding at the time and on each day in the
     month thereafter (as conclusively shown by debis Financial Services
     Limited's records) by the difference between the FHBR and the Assumed Rate
     and dividing the result by 365.  Such calculation shall be made on each day
     of the month.

     The net result of all such variations (if any) shall then be charged or
     refunded (as the case may be) to the Lessee at intervals of six calendar
     months commencing six months after the commencement of the Period of Hire.
     In addition, if this Master Agreement or any Equipment Lease Contract
     expires or terminates for any reason on a date which is not six months
     after the commencement of the Period of Hire or a six monthly anniversary
     of it, the net result of such variations from the commencement of the
     Period of Hire (or, if later, the last preceding six monthly anniversary)
     shall be charged or refunded (as the case may be) to the Lessee on the date
     of such expiry or termination.  Variations shall bear Value Added Tax at
     the applicable rate.  All sums due from the Lessee hereunder shall be
     treated as sums due under this Master Agreement.

     5.4.3  no account shall be taken of any reduction in FHB$R below the
            Minimum Rate (as specified in Part V of the relevant Equipment Lease
            Contract).

5.5  Any payments made by the Lessee to the Lessor or recovered in respect of
     the liabilities of the Lessee under this Master Agreement may be
     appropriated by the Lessor in or towards satisfaction of any sums due and
     owing to the Lessor hereunder notwithstanding that the Lessee may have
     purported to appropriate such payments in some other way and the Lessor may
     also appropriate any such payment in part towards any sums which are due
     hereunder and in part t6owards satisfaction of any sums due by the Lessee
     to the Lessor otherwise than under this Master Agreement.

6.   QUALIFYING PURPOSE

6.1  The Lessee covenants with the Lessor that:

     6.1.1  the Equipment will be used for a qualifying purpose in the requisite
            period within the meaning of s 39 of the Capital Allowances Act 1990
            and will not at any time in that period be used for any other
            purpose (including being leased to a `non-

                                       7
<PAGE>
 
            resident' otherwise than by `permitted leasing' (as such expressions
            are defined in the Capital Allowances Act 1990, s 50).

     6.1.2  it will within 90 30 days (or such longer period as may be
            specified) furnish to the Lessor and to any other person who may be
            empowered by law to require the same such information records or
            other documents as may be required of the Lessee which the Lessee
            has or can reasonably obtain about the leasing of the Equipment or
            the use to which it is or has been put.

7.   LESSEE'S COVENANTS

7.1  The Lessee undertakes and agrees:

            Care of the Equipment
     7.1.1  to take all reasonable and proper care of the Equipment and keep the
            same in good and serviceable condition (reasonable fair wear and
            tear excepted) and to indemnify the Lessor against loss of or damage
            to the Equipment howsoever caused;

            Maintenance
     7.1.2  to carry out all periodical or other maintenance requirements in
            respect of the Equipment prescribed by the Manufacturer's written
            instructions or any written instructions from the Lessor with all
            due care in accordance with any such instructions and at the
            recommended time or times;

            Manuals
     7.1.3  to ensure that any instructions or manuals supplied by the
            Manufacturer for use of the Equipment are or will prior to the
            Equipment being brought into use be fully understood and will be
            observed by the Lessee and any person who will be responsible for
            the use of the same;

            Safety
     7.1.4  to take such further steps as may be properly recommended by the
            Manufacturer or may otherwise be necessary to ensure that the
            Equipment will be safe and without risks to health and safety when
            properly used by the Lessee or authorised users;

            Health and Safety at Work etc Act 1974
     7.1.5  (to the extent relevant) forthwith to comply in all respects with
            the requirements of any improvement or prohibition notice served on
            the Lessee is respect of or relating to the use of the Equipment
            under the Health and Safety at Work etc Act 1974 or any statutory
            modification or re-enactment for the time being thereof (except only
            insofar as the effect of the notice is suspended on the making of an
            appeal against the same in accordance with the provisions of that
            Act);

                                       8
<PAGE>
 
            Licenses
     7.1.6  to obtain effect and keep effective all permissions licenses and
            permits which may from time to time be required in connection with
            the business of the Lessee and the use of the Equipment at the
            premises where it is situated and to comply with all statutes and
            other obligations of all kinds in relation to the Equipment and the
            use thereof and at its own expense to add to or to install with the
            Equipment any safety or other equipment required by any applicable
            law or regulation to be so added or installed for the use or
            operation of the Equipment;

            Operation of equipment
     7.1.7  only to operate the Equipment and to permit the Equipment to be
            operated in a skillful and proper manner and by persons who are
            competent to operate such goods;

            Alterations
     7.1.8  not to make or cause or permit to be made any alteration
            modification or addition to the Equipment without the Lessor's prior
            consent in writing (unless such alteration or modification is to
            give effect to an improvement in design or technology approved by
            the Manufacturer) and that any such alteration or modification of
            whatsoever kind shall belong to and become the property of the
            Lessor and part of the Equipment;

            Storage
     7.1.9  to keep the Equipment suitably housed or (if vehicles) garaged and
            in particular to keep the Equipment in conformity with any statutory
            requirements from time to time applicable thereto;

            Access
    7.1.10  to permit the Lessor and any persons duly authorised by the Lessor
            to enter on any land or premises in which the Equipment is for the
            time being sited so as to inspect and/or repair the Equipment;

            Distress
    7.1.11  not by any act or default to render the Equipment liable to any
            distress execution or other legal process or suffer the appointment
            or the presentation of a petition for the appointment of an
            Administrator under the provisions of Part II of the Insolvency Act
            1986;

            Usage
    7.1.12  not to use or permit the Equipment to be used in contravention of
            any statutory provision or regulation or in any way contrary to law
            or for any purpose for which the Equipment is not designed or
            reasonably suitable;

            Removal of equipment

                                       9
<PAGE>
 
    7.1.13  not to remove the Equipment from the Location and to notify the
            Lessor in writing of any change in the Lessee's address and upon the
            request of the Lessor to inform the Lessor in writing of the
            whereabouts of the Equipment;

            Payment of fees and taxes
    7.1.14  punctually to pay all rents rates taxes and other outgoings payable
            in respect of the Location and any other premises in which with the
            consent of the Lessor the Equipment may be housed and all license
            fees duties and registration charges payable in respect of the
            Equipment and to produce to the Lessor on request receipts for such
            payments;

            Prohibition on dealings
    7.1.15  not to sell or offer for sale assign mortgage pledge sub-let or lend
            out the Equipment or in any way part with the Equipment or any
            interest therein but to keep the Equipment in its own possession
            legal and physical or under its control and to prevent the creation
            of any charge or lien thereon provided that the Lessee may with the
            consent of the Lessor (such consent not to be unreasonably withheld)
            temporarily part with possession of the Equipment for the purposes
            of carrying out maintenance and repairs and provided further that
            such consent shall not be required in the case of emergency repairs
            to the Equipment or in the case of routine maintenance;

            Mortgagees' interests
    7.1.16  to procure that by the terms of any mortgage charge or debenture
            (whether specific or floating) of or in respect of the Lessee's
            assets or any premises in which the Equipment may be installed or
            stored no rights whether present future or contingent are created or
            become exercisable in respect of the Equipment notwithstanding that
            the Equipment may be or have become a fixture thereof. The Lessee
            acknowledges the right on the part of the Lessor to notify any
            mortgagee or chargee from time to time of the Lessee's assets of the
            existence of this Master Agreement and of such of its terms as the
            Lessor shall consider appropriate;

            Plates
    7.1.17  if requested by the Lessor to affix or cause to be affixed to the
            Equipment or any separate part or parts thereof requested by the
            Lessor plates or other forms of marking indicating in terms approved
            by the Lessor that the Equipment is the property of the Lessor and
            is on lease to the Lessee. The Lessee shall ensure that such Plates
            remain so affixed and that the same are conspicuous and are at no
            time removed obligated defaced or covered up;

            Ownership
    7.1.18  that the Equipment shall remain the property of the Lessor
            (notwithstanding that it may have become affixed or attached to any
            land or building) and that the Lessee shall have no right or
            interest therein otherwise than as Lessee and shall at no time 

                                       10
<PAGE>
 
            do or permit to be done any act or thing which might prejudice or
            jeopardise the rights of the Lessor in and to the Equipment.

7.2  The Lessee hereby expressly further warrants and represents to the Lessor
that:

     7.2.1  the Lessee has entered into this Master Agreement and will enter
            into each Equipment Lease Contract in the course of and for the
            purpose of the business or profession carried on by the Lessee and
            that the Lessee is accordingly not to be treated as a `consumer'
            within the meaning of s 12 of the Unfair Contract Terms Act 1977;

     7.2.2  so far as is practicable for the Lessee to do, it has satisfied
            itself that the Manufacturer has carried out or will carry out prior
            to the use thereof by the Lessee all necessary tests and
            examinations to ensure that the Equipment is designed and
            constructed so as to be safe and without risks to health when
            properly used by the Lessee or authorised users;

     7.2.3  the Lessee has and will have full power authority and right and has
            taken or will take all corporate and other action necessary to enter
            into and carry out its obligations under the Master Agreement and
            each Equipment Lease Contract.

8.   INSURANCE

8.1  The Lessee shall throughout the Period of Hire or (if longer) for so long
     as the Equipment remains in its possession or under its control (without
     prejudice to any liability of the Lessee to the Lessor) at its own expense
     insure the Equipment with the insurance company named in the Equipment
     Lease Contract against all loss or damage and also against all risks of
     third party liability arising out of the ownership presence or use of the
     Equipment in an amount equal to whichever is the greater of:

     8.1.1  the full new replacement value of the Equipment; and

     8.1.2  the amount from time to time payable on termination of the leasing
            of the Equipment calculated in accordance with the provisions of
            clause 10.2.3 below.

8.2  The lessee will upon request by the Lessor at any time produce to the
     Lessor every such policy of insurance and the receipt for the current
     year's premium. If the Lessee shall fail to keep the Equipment insured as
     aforesaid to the satisfaction of the Lessor or to produce any such policy
     or receipt as aforesaid the Lessor shall be entitled at the expense of the
     Lessee to insure the Equipment and keep it so insured during the period
     mentioned above and the Lessee will pay to the Lessor on demand any sums
     expended by the Lessor for such purpose with interest at the Default Rate
     from the time of the same having been expended until the date of actual
     repayment.

                                       11
<PAGE>
 
8.3  The interest of the Lessor in the Equipment shall be noted on the policy of
     insurance which policy shall:

     8.3.1  name the Lessor as loss payee;

     8.3.2  not be capable of cancellation by the insurers (at the request of
            the Lessee or otherwise) other than by 30 days' prior notice in
            writing to the Lessor;

     8.3.3  provide that the insurers shall waive any breach of warranty under
            the policy of insurance as against the Lessor.

8.4  The Lessee shall (so far as necessary) irrevocably authorise the insurers
     to pay to the Lessor all monies payable under the said insurance policy in
     respect of any loss or damage to all or any part of the Equipment. The
     Lessee hereby irrevocably authorises the Lessor:

     8.4.1  in the name and on behalf of the Lessee to make any claim or claims
            against the insurers under the said insurance policy in respect of
            any loss of or damage to the Equipment or any part thereof and to
            settle or compromise such claim; and

     8.4.2  to receive and to give a good discharge to the insurers for any
            monies payable in respect thereof.

8.5  The Lessee shall not use or allow the Equipment to be used for any purpose
     not permitted by the terms and conditions of any policy of insurance for
     the time being relating to the Equipment nor do or allow to be done any act
     or thing whereby such insurance may be invalidated.

8.6  In the event of any loss of or damage to all or any part of the Equipment
     the Lessee shall give immediate notice to the Lessor and shall make or
     assist in the making of any appropriate claim or claims under the said
     insurance policy in such manner as the Lessor shall require and shall not
     in any manner settle or compromise any such claim except at the written
     request of the Lessor.

8.7  The Lessee shall promptly reinstate or repair at its own expense Equipment
     which has not become a total loss or a constructive total loss and shall
     continue to pay rental in respect of such Equipment during such
     reinstatement or repair.  All insurance monies received in respect of any
     such loss shall be applied firstly in or towards payment to the Lessor of
     any amounts for the time being due and outstanding from the Lessee to the
     Lessor hereunder and secondly in or towards reimbursing the Lessee for the
     costs of such reinstatement or repairs.

8.8  In the event that any item of the Equipment (`the Destroyed Equipment')
     shall become a total loss or a constructive total loss (whether as a result
     of its being lost destroy damaged 

                                       12
<PAGE>
 
     beyond repair confiscated or otherwise) the Lessee shall pay to the Lessor
     upon demand an amount equal to the aggregate of:

     8.8.1  all payments of rental and all other monies then due or in arrear
            under the relevant Equipment Lease Contract in respect of or
            attributable to the Destroyed Equipment together with interest
            thereon at the Default Rate as provided for in clause 13.8; and

     8.8.2  all other sums and amounts due hereunder in respect of the Destroyed
            Equipment in questions including a sum equal to that payable under
            clause 10.2.3 below in respect of the termination of the leasing of
            the Destroyed Equipment. 

8.9  Follow ing payment by the Lessee of the amounts referred to in clause 8.8
     above the Residual Percentage of any insurance proceeds received by the
     Lessor in respect of the Destroyed Equipment under clause 8.8.2 shall be
     paid to the Lessee by way of rebate of rentals and the leasing of such item
     of the Equipment shall termination but without prejudice to the Lessor's
     rights against the Lessee and until payment by the Lessee of the said
     amount all the rights of the Lessor (including the right to receive rental
     in respect of the Destroyed Equipment) and the obligations of the Lessee
     hereunder shall continue.

8.10 The Lessee shall indemnify the Lessor against any loss liability damage
     cost expense or demand which the Lessor shall notify the Lessee that the
     Lessor will suffer or has suffered as a result of any such payment to the
     Lessee as is referred to in clause 8.9 not being allowed as a trading
     expense in computing for tax purposes the chargeable profits of the Lessor.

9  WARRANTIES RELATING TO THE EQUIPMENT

9.1  The Lessor will use its best endeavours for the term of the relevant
     Equipment Lease Contract to extend to the Lessee or enforce on its behalf
     the benefit of any guarantee condition or warranty which may have been
     given to the Lessor by the Manufacturer or otherwise implied in favour of
     the Lessor.

9.2  Any such guarantee condition or warranty shall only be extended to the
     Lessee or enforced on its behalf on terms that the Lessee shall fully
     indemnify the Lessor to the satisfaction of the Lessor against all costs
     claims damages and expenses incurred or to be incurred in connection with
     the enforcement thereof or the making of any claim thereunder.

                                       13
<PAGE>
 
     EQUIPMENT LEASE CONTRACT

     NO:  1278


AND made pursuant to a Master Finance Lease Agreement dated 17th June 1997 made
between Lessor (1) and Lessee (2) (`Master Lease Agreement')

PARTIES:

1.  `LESSOR':  DEBIS FINANACIAL SERVICES LIMITED (registered number
               2997555) of Marlborough Court, Sunrise Parkway, Linford Wood,
               Milton Keynes, MK14 6YR.

2.  `LESSEE':  INDEPENDENT ENERGY UK LIMITED (registered number
               3033406) of St. John's Court, 70 St. John's Close, Knowle,
               Solihull, West Midlands B93 0NN.

OPERATIVE PROVISIONS:

(a)  The Lessor hereby agrees to let and the Lessee agrees to take on lease the
     Equipment described in Part I below on the terms set out below and
     incorporated herein.

(b)  All the terms of the Master Lease Agreement shall apply to and form part of
     this Equipment Lease Contract as if the same were set out completely
     herein.  In the event of a conflict between the conditions contained in the
     Master Lease Agreement and the conditions contained in this Equipment Lease
     Contract the conditions contained herein shall prevail.
 
PART I EQUIPMENT
 
1.   THE EQUIPMENT:
 
     Type          Model         Quantity   Description        Serial Numbers
 
     Stewart &     2416G-2000    5 New      2,000 KW           KR60RST114-1-B
     Stevenson                              Natural Gas        HR60RST46-1-B
                                            Generator Systems  HR60RST47-1-B
                                                               LR60RST135-1-B
                                                               LR60RST136-1-B

                                       14
<PAGE>
 
2.  Location of Equipment (`Location'):  Trumfleet, Nr. Doncaster

3.  Name and address of Supplier (`Manufacturer'): Stewart & Stevenson Services,
    Inc., 2707 North Loop West, P.O. Box 1637, Houston 77008, Texas, United
    States of America

4.  Name and address of Insurers:  Marsh & McLennan Marine & Energy Ltd

5.  Insurance Policy details:
     Policy No:
     Expiry Date:  31st July 1997

6.  Capital Expenditures (`Lessor's Cost'): GBP4,383,326.40 plus VAT of
                                            (Pounds)822,296.49  Total
                                            (Pounds)5,205,622.89 (all figures 
                                            converted from US Dollars at the 
                                            prevailing rate of USD1.6420/
                                            (Pounds)1 on 19th June 1997

PART II PERIOD OF HIRE

7.   Commencement Date:  17th June 1997 or if later the date of signature of the
     Acceptance Certificate

8.   Primary Period:  84 months

9.   Secondary Period:

PART III RENTAL

10.  Primary Rental Periods:  Initial Rental of   (Pounds)306,832.85 plus VAT of
(Pounds)53,695.75  Total  (Pounds)360,528.60

     followed by 6 monthly rentals of   (Pounds)31,422.97 plus VAT
     followed by 78 monthly rentals of   (Pounds)69,734.47 plus VAT

11.  Frequency:  monthly (in arrears)

12.  Date of First Payment:    23rd July 1997

13.  Secondary Period Rental:  0.25% of Capital Cost (i.e. (Pounds)10,958.32
     plus VAT)

14.  Frequency:  annually (in advance)

                                       15
<PAGE>
 
15.  Place of Rental Payment:
                    Bank:         National Westminster Bank Plc
                    Sort Code:    60-14-55
                    Account No.:  81369778
                    Account Name: debis Financial Services Ltd

16.  Residual Percentage of net sale proceeds:  95%

     Value Added Tax: All rental payments will carry VAT at the rate applicable
     on their due dates. In order to provide evidence of input tax, periodic VAT
     invoices will be supplied by the Lessor. Lessor's VAT registration no. 650
     6886 13.

PART IV TAX ASSUMPTIONS

17.  The Rental for the Primary Period is calculated assuming:

     a rate of Corporation Tax of 33%

     a first year allowance of 25% and thereafter an annual writing down
     allowance of 25%

18.  The Lessee acknowledges that the Equipment includes assets in respect of
     which an election can be made under s 37 of the Capital Allowances Act
     1990. Accordingly there shall deemed to be included in clause 5.3 of the
     Master Lease Agreement as an additional tax assumption the following:

     5.3.9  a balancing allowance is not made available to the Lessor in the
            accounting period of the Lessor during which the Primary Period
            comes to an end equal to the Lessor's Cost less only the cumulative
            writing down allowance claimed prior to that year and the proceeds
            (if any) arising on disposal

PART V INTEREST RATE FLUCTUATIONS

19.  Assumed Rate of interest:  N/A %

20.  Minimum Rate of interest:  N/A %

     Where this Part V has been completed the provisions of clause 5.4 of the
     Master Lease Agreement shall apply

AS WITNESS this Agreement has been signed for and on behalf of the parties
hereto the day and year below written.


Signed
      -----------------------------------------
For and on behalf of INDEPENDENT ENERGY UK LIMITED

                                       16
<PAGE>
 
(duly authorised to sign)


Witness
       -----------------------------------------
Name
       -----------------------------------------
Address
       -----------------------------------------

       -----------------------------------------

       -----------------------------------------
Occupation
           -------------------------------------
Signed: 
       -----------------------------------------

For and on behalf of DEBIS FINANCIAL SERVICES LIMITED

DATED:              1997

                                       17
<PAGE>
 
                                    ANNEXURE

                             ACCEPTANCE CERTIFICATE

Forming party of Equipment Lease Contract numbered 1278 and dated       1997
between (`the Owner') DEBIS FINANCIAL SERVICES LIMITED and (`the Lessee')
INDEPENDENT ENERGY UK LIMITED

The Lessee hereby warrants and certifies that the Equipment:

        1    has been received and delivered and is the Equipment
             comprised in the Equipment Lease Contract;

        2    has been examined and is complete, in good condition and working
             order;

        3    for the purposes of all relevant Safety legislation is considered
             to be safe for use when used in accordance with the Manufacturer's
             instructions and all required safety apparatus has been installed
             or supplied;

        4    is, in consequence of the foregoing, accepted for the purpose of
             the Equipment Lease Contract and generally.

The Lessee further acknowledges that it shall have no rights whatsoever against
the Owner by reason of or in any way arising out of any failure by the
Manufacturer to comply with any obligation owed by the Manufacturer to the
Lessee or to the Owner.


SIGNED BY OR ON BEHALF OF THE LESSEE



- -------------------------------------------


Dated:
      -------------------------------------
(duly authorised to sign)

                                       18

<PAGE>

                                                                   EXHIBIT 10.13
 
                             LEASE MASTER AGREEMENT
                            Dated ____________, 1997

                                  - between -

                           1.  ING LEASE (UK) LIMITED
                                        
                                    - and -


                       2.  INDEPENDENT ENERPY UK LIMITED



                                  WILDE SAPTE

                                     London
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
 
Clause Heading                                           Page No.
<C>        <S>                                           <C>
 
      1.   INTRODUCTORY...............................          1
      2.   DEFINITIONS................................          1
      3.   CONDITIONS PRECEDENT.......................          3
      4.   LEASING OF THE EQUIPMENT...................          3
      5.   DELIVERY AND ACCEPTANCE OF THE EQUIPMENT...          3
      6.   TERM.......................................          3
      7.   RENTAL AND OTHER CHARGES...................          4
      8.   RENTAL ADJUSTMENT..........................          5
      9.   EXCLUSION OF LESSOR'S LIABILITY............          6
     10.   CONDITIONS OF USE..........................          7
     11.   INSURANCE..................................          8
     12.   LOSS OR DAMAGE.............................          9
     13.   LESSEE'S INDEMNITIES.......................         10
     14.   OWNERSHIP OF EQUIPMENT AND ALLOWANCES......         10
     15.   EARLY TERMINATION BY LESSEE................         11
     16.   TERMINATION BY LESSOR......................         11
     17.   PAYMENTS DUE ON TERMINATION................         13
     18.   RETURN OF THE EQUIPMENT....................         13
     19.   SALES AGENCY...............................         14
     20.   LESSEE'S REPRESENTATIONS AND WARRANTIES....         14
     21.   MISCELLANOUS...............................         16
</TABLE>
ANNEX   - CONDITIONS PRECEDENT TO THE LESSOR'S OBLIGATIONS
ANNEX A - DESCRIPTION OF THE EQUIPMENT
ANNEX B - TERMINATION VALUE TABLE

                                       i
<PAGE>
 
LEASE MASTER AGREEMENT

DATE:  _________, 1997

PARTIES:

1.   ING LEASE (UK) LIMITED registered number 2323082 whose registered office is
     at 107 Cheapside, London EC2V 6HJ (the "Lessor"); and

2.   INDEPENDENT ENERGY (UK) LIMITED registered number 3033406 whose registered
     office is at 30 Aylesbury Street, London, EC1R 0ER (the "Lessee")

IT IS AGREED as follows:

1.   INTRODUCTORY

     This Agreement sets out general terms upon which the Lessor is willing to
     enter into arrangements relating to Equipment with the Lessee in relation
     to:

(a)  the leasing of Equipment to the Lessee by the Lessor;

(b)  the sale of Equipment by the Lessee as agent for the Lessor; and

(c)  general legal provisions affecting this Agreement and related documents;

2.   DEFINITIONS

     In this Agreement and all Schedules written pursuant hereto the following
     words or phrases shall bear the following meanings where the context
     admits:

     "ACCEPTANCE DATE" means the date of execution of the Acceptance
     Certificates pursuant to Clause 5(a) below;

     "AGREEMENT TO ACQUIRE" means the agreement to acquire of even date herewith
     between the Seller, the Lessor, the Lessee and the Supplier;

     "ASSOCIATED COMPANY" means any parent or subsidiary company of the Lessee
     or any other company with a common shareholding to that of the Lessee;

     "BASE RATE" means the base rate of Barclays Bank plc from time to time;

     "BUSINESS DAY" means a day upon which banks in London are open for the
     conduct of Sterling business generally (not being a Saturday, Sunday or
     bank holiday);

     "CONTINUATION PERIOD" means any continuation period following the Primary
     Period of any leasing referred to in a Schedule;

     "CREDIT AGREEMENT" means a credit agreement dated 5th September, 1997 and
     made between inter alia, the Lessee and Barclays Bank Plc (as agent) in
     relation to the provision of a revolving credit facility to the Lessees;
<PAGE>
 
     "DEFAULT RATE" has the meaning given to it in Clause 7(e);

     "DIRECT AGREEMENT" means the direct agreement of even date herewith between
     Barclays Bank Plc (as agent), the Lessor and the Lessee;

     "EQUIPMENT" means plant or machinery the subject of this Agreement or any
     Schedule hereto (to include all replacements and renewals thereof and of
     any parts thereof and all additions and accessories which form an integral
     part of such Equipment);

     "EVENT OF DEFAULT" means any of the events set out in clause 16(b);

     "GROUP COMPANY" means any company the ultimate holding company of which is
     Internationale Nederlanden Group;

     "INDEPENDENT INSURANCE" means Independent Insurance Company Limited, a
     company incorporated in England and Wales;

     "LEASE TERM" means the period from the date upon which Equipment becomes
     the property of the Owner until it is redelivered to or recovered by the
     Lessor.

     "NET PROCEEDS OF SALE" means the gross proceeds of sale of the Equipment
     (excluding any VAT) less all costs and expenses incurred in repossessing,
     transporting, storing, insuring, maintaining and repairing the Equipment;

     "OWNER" means the actual owner of Equipment (or in the context of Capital
     Allowances the person to whom it is deemed to belong for the purposes of
     S.60 of the Capital Allowances Act 1990);

     "PARENT" means Independent Energy Holdings Plc;

     "PARENT GUARANTEE" means the guarantee of even date herewith made by the
     Parent in favour of the Lessor;

     "PRIMARY PERIOD" means the primary period of any leasing referred to in a
     Schedule commencing on the date specified therein and continuing for the
     term specified therein;

     "RELEVANT PARTY" has the meaning give to it in Clause 16(b)(iv)(aa);

     "RENTAL" means rental payable by the Lessee pursuant to the terms of a
     Facility Letter or a Schedule;

     "RENTAL PAYMENT DATE" means each of the dates specified as such in a
     Schedule;

     "SCHEDULE" means an agreement for the leasing of Equipment describing
     itself as a Schedule and written to incorporate (in whole or in part) the
     terms of this Agreement;

     "SELLER" means Equipment Supply Company Limited;

     "SUPPLIER" means Stewart & Stevenson Services, Inc.;

                                       2
<PAGE>
 
     "SUPPLIER'S GUARANTEE" means the guarantee of even date herewith made by
     the Supplier in favour of the Lessor;

     "TERMINATION VALUE" has the meaning given to it in Clause 17.l(a)(ii);

     "TOTAL LOSS" has the meaning given to it in Clause 12(c); and

     "VAT" has the meaning given to it in Clause 7(c).

3.   CONDITIONS PRECEDENT

     This agreement shall be effective as from the date on which it is executed
     by the parties hereto PROVIDED HOWEVER THAT the obligation of the Lessor to
     acquire, pursuant to the Agreement to Acquire, and to the lease Equipment
     acquired by it to the Lessee hereunder shall be subject to the prior
     satisfaction in full, or waiver in writing of the conditions precedent set
     out in the Annex.

4.   LEASING OF THE EQUIPMENT

(a)  The Lessor shall let and the Lessee shall take on lease Equipment purchased
     by the Lessor for the purpose of leasing it to the Lessee on the terms set
     out in the Schedules from time to time in force between the parties and
     incorporating the terms of this Agreement.

(b)  Each Schedule shall be deemed to form a separate Agreement for the lease of
     the Equipment therein described but so that any breach of the provisions of
     this Agreement or any Schedule shall be deemed to be a breach of this
     Agreement and every Schedule in force between the parties hereto and the
     same shall become enforceable accordingly.

5.   DELIVERY AND ACCEPTANCE OF THE EQUIPMENT

(a)  Delivery of the Equipment by the Lessor to the Lessee, and acceptance
     thereof by the Lessee shall take place immediately after the Lessee has
     completed a physical inspection of the Equipment and upon delivery of the
     Equipment by the Seller to the Lessor or its agent pursuant to the
     Agreement to Acquire.  Simultaneous with delivery of such Equipment the
     Lessee shall execute and deliver to the Lessor certificates of acceptance
     (the "ACCEPTANCE CERTIFICATES") which shall constitute irrevocable evidence
     of delivery and acceptance the Equipment hereunder.

(b)  The Lessee shall be solely responsible for the delivery of each part of the
     Equipment from the place stated in the relevant Acceptance Certificate to
     any other location on which the whole or any part of the Equipment is or is
     to be located and for the installation and commissioning of the Equipment.

6.   TERM

(a)  Subject to the provisions for earlier termination of the letting of the
     Equipment the Primary Period of the letting of the Equipment comprised in a
     Schedule shall commence on the Acceptance Date.

(b)  The letting of the Equipment shall continue for successive Continuation
     Periods of twelve, months (the first commencing on the date of expiry of
     the Primary Period) unless terminated by the Lessee giving written notice
     to the Lessor not less than thirty (30) days before the expiry of the
     Primary Period or any anniversary thereof PROVIDED THAT the letting of the
     Equipment shall not exceed the expiry of the useful economic life of the
     Equipment and PROVIDED FURTHER THAT if request 

                                       3
<PAGE>
 
     by the Lessor, the Lessee shall before the commencement of any Continuation
     Period have satisfied the Lessor that the Equipment is, and up until the
     end of the Following Continuation Period will be likely to remain, safe for
     use and fit for its purpose.

7.   RENTAL AND OTHER CHARGES

(a)  The Rentals and other payments payable by the Lessee to the Lessor in
     respect of Equipment comprised in a Schedule shall be the respective
     amounts stated in such Schedule and shall be payable on the Rental Payment
     Dates specified in such Schedule.  Such Rentals and payments together with
     all other payments due and payable by the Lessee hereunder or under the
     Agreement to Acquire shall be paid punctually on the due dates and without
     any deduction, counterclaim, set-off or withholding whatsoever and without
     previous demand to the Lessor at its address for the time being or to its
     order.  If under applicable law the Lessee is required to make any
     deduction or withholding, the Lessee shall increase the payment to the
     Lessor so that the net amount received by such Lessor after any deduction
     or withholding shall be equal to the full amount which the Lessor would
     have been paid had payment not been made subject to any deduction or
     withholding.

(b)  The Lessee shall further pay on demand the cost of any modifications or
     additions to the Equipment required by law and of any special equipment or
     accessories requested by the Lessee after the entering into of a Schedule
     but so that the Lessor accepts no liability to supply the same.

(c)  All rentals and other payments to be made under this Agreement are
     calculated without regard to Value Added Tax (or similar tax replacing or
     introduced in addition to the same) ("VAT") and the Lessee agrees that,
     during the Lease Term, in addition to the Rentals and other sums to be
     paid, it will   promptly pay to, or reimburse the Lessor for all VAT and
     any other taxes, assessments or governmental charges levied or assessed
     against or paid by the Lessor on account of the ownership of or otherwise
     in relation to the Equipment, or the use or operation thereof or the
     leasing thereof to the Lessee, or the rent or other sums to be paid in
     respect thereof (excluding any taxes payable on the net income of the
     Lessor).

(d)  Any costs and expenses of whatever kind payable in respect of the Equipment
     and not expressly payable by the Lessor hereunder shall be paid by the
     Lessee on demand.

(e)  The Lessee shall pay interest at the rate of 4% over Base Rate ("DEFAULT
     RATE") for the time being in force and calculated on a daily basis
     compounded quarterly on any amount payable hereunder or under any Schedule
     or the Agreement to Acquire which is not paid on the due date until payment
     is received by the Lessor whether before or after any judgment.

(f)  The Lessee's obligation to pay Rental and make other payments and perform
     its obligations pursuant to or in connection with this Agreement or any
     Schedule or the Agreement to Acquire shall be absolute and unconditional
     and shall not be affected by and shall be irrespective of any contingency
     whatsoever including (but not limited to):

     (i)  any right of set-off, counterclaim, recoupment, defence, deduction,
          withholding or other right (unless and to the extent that the law
          requires any of the same to be exercised);

     (ii) any unavailability of the Equipment for any reason, including, but not
          limited to, requisition thereof, of any prohibition or interruption of
          or other restriction against the Lessor's or the Lessee's use,
          operation or possession of the Equipment, any interference with such
          use, operation or possession or failure to deliver, install or
          commission any part of the Equipment

                                       4
<PAGE>
 
          or any lack or invalidity of title or any other defect in the title,
          quality (satisfactory or otherwise), fitness for any purpose,
          condition, design, or operation of any kind or nature of the
          Equipment, or the ineligibility of the Equipment for any particular
          use or trade, the absence or withdrawal of any permit, licence or
          authorisation required for the ownership, leasing, use, operation or
          location of the Equipment, or the Total Loss of, or any damage to, the
          Equipment or any part thereof;

    (iii) any insolvency, bankruptcy, administration, reorganisation,
          arrangement, readjustment of debt, dissolution, liquidation or similar
          proceedings by or against the Lessor, the Lessee or any Relevant
          Party;

     (iv) any invalidity or unenforceability or lack of due authorisation of, or
          any other defect in, this Agreement or any Schedule or the Agreement
          to Acquire or any particular provision hereof or thereof.

     (v)  any failure or delay on the part of any party hereto duly to perform
          or comply with its obligations under this Agreement or the Agreement
          to Acquire; and

     (vi) any other cause which but for this provision would or might have the
          effect of terminating or in any way affecting any obligation of the
          Lessee hereunder or under the Agreement to Acquire,

     it being the declared intention of the parties that the provisions of this
     Clause and the obligations of the Lessee to pay Rentals and make other
     payments in accordance with this Agreement or the Agreement to Acquire
     shall survive any frustration and that save as expressly provided in this
     Agreement or any Schedule or the Agreement to Acquire no monies payable or
     paid hereunder or under the Agreement to Acquire by the Lessee to the
     Lessor shall in any event or circumstances be repayable to the Lessee.

8.   RENTAL ADJUSTMENT

     The Primary Period Rentals have been calculated assuming, inter alia, that:

(a)  the rate of corporation tax for the financial year ending 31st March 1997
     is 33% and for each subsequent Financial Year is 31%;

(b)  there will be no change in the law of the United Kingdom relating to
     taxation or the practice of any tax authority in relation thereto as it is
     currently applied to the Lessor or the Owner or the group of companies of
     which the Lessor or the Owner is a member or the Primary Period Rentals;

(c)  in respect of the accounting period of the Owner in which any amount of
     expenditure is incurred by the Owner on the provision of the Equipment
     ,writing down allowances will be obtained and retained at a rate of twenty-
     five per cent (25%) per annum in respect of the part of such expenditure
     which is proportionate to the part of the accounting period falling after
     such expenditure is incurred to the date of the Owner's year end and
     thereafter, to the accounting period in which the leasing ends, on a
     reducing balance basis (such balance to include in the next following
     accounting period any part of the remainder of the expenditure not included
     in the Owner's qualifying expenditure for the preceding accounting period);

(d)  each accounting period of the Owner and the Lessor will end on the 31st
     December in each year;

                                       5
<PAGE>
 
(e)  the provision and leasing of the Equipment is the only transaction
     undertaken by the Owner and the Lessor, provided that nothing in this
     assumption shall deem a balancing allowance to be made to the Owner;

(f)  the Equipment shall be sold not later than the last day of the accounting
     period of the Owner in which the Primary Period expires and the disposal
     value shall be a sum not less than the result of writing down the actual
     cost thereof at 25% per annun on a reducing balance basis to the date of
     sale in accordance with Clause 8(a) above.

     If at any time any of these assumptions referred to in this Clause 8 (other
     than 8(e)) do not apply and as a result the Owner or the Lessor or the
     group of companies of which the Owner or the Lessor is a member, will not
     receive the same net after tax return (taking into account its and their
     tax position and all other relevant circumstances) that it or they would
     otherwise have received, then the Lessor may require the Lessee to
     compensate the Lessor and the Owner therefor in such amount and such manner
     (by adjustment of the Primary Period Rental and the Termination Values in
     Annex B of any Schedule or otherwise) as the Lessor determines necessary to
     place the Owner and the Lessor and the group of companies of which the
     Owner or the Lessor is a member in the position that they would have been
     in if such assumption did apply and the Lessee undertakes to pay the amount
     and in the manner so required.  Any determination by the Lessor under this
     clause shall, save in the case of manifest error, be final and binding on
     the Lessee.

9.   EXCLUSION OF LESSOR'S LIABILITY

9.1  Since the Equipment has been selected by the Lessee, warranties have been
     given by the Supplier direct to the Lessee and the Equipment has been or
     will be delivered directly to the Lessee by the Supplier, it is expressly
     agreed and acknowledged that no representation, warranty, term or condition
     of any kind whatsoever (express or implied) is or has been given by or on
     behalf of the Lessor in relation to the Equipment.  All terms, conditions
     and warranties (express or implied and whether statutory, collateral hereto
     or otherwise) relating to the Equipment, its specification, age, quality
     (satisfactory or otherwise), description or as to its fitness for any
     purpose are hereby expressly excluded.  No person not in the actual employ
     of the Lessor is or is to be deemed to be the agent or entitled to act on
     behalf of the Lessor for any purpose.

9.2  The Lessor shall not be liable to the Lessee (in contract or tort or
     otherwise) for any loss, liability, damage or expense of any kind
     (including without limitation consequential loss) arising directly or
     indirectly in connection with the Equipment, its condition or any defect
     therein or from any action or omission (negligent or otherwise) of the
     Lessor, its servants or agents PROVIDED THAT nothing herein shall exclude
     any liability of the Lessor for death or personal injury caused by the
     Lessor's negligence to the extent that such exclusion is prohibited by
     statute.  The Lessor shall not be obliged to supply any replacement for
     the, Equipment or any part thereof in the event of its being defective,
     unusable, lost, damaged or otherwise unfit or unavailable for any period
     and the Lessee shall not be entitled to any remission of rentals or any
     other sum in respect of any such period.

9.3  The Lessee warrants that it has to obtained from the Supplier all such
     warranties, conditions and guarantees as it requires in relation to the
     Equipment.  The Lessor will provide reasonable assistance to the Lessee in
     pursuing any claim against the Supplier on terms that the Lessee fully
     indemnifies the Lessor against all costs, claims, damages and expenses
     incurred or to be incurred in connection with the enforcement thereof, or
     the making of any claim thereunder.

                                       6
<PAGE>
 
10.  CONDITIONS OR USE

(a)  The Lessee shall use the Equipment solely in the conduct of its business in
     compliance with all applicable laws and in a skilful and proper manner and
     in accordance with any operating instructions issued by the manufacturer or
     vendor of the Equipment and by properly qualified and licensed personnel.

(b)  The Lessee shall keep the Equipment at all times in its possession and
     control and shall not assign, sell, offer for sale, pledge, mortgage or
     lend any of the Equipment or the benefit of any Schedule nor pledge the
     credit of the Lessor, nor suffer any of the Equipment to be seized or
     impounded under any legal process nor create or permit to be created any
     lien on any of the Equipment (excluding a repairers lien).  In the event of
     any breach of this subclause (or where a repairer's lien exists) the lessor
     may (but shall not be bound to) pay to any third party such sum as is
     necessary to procure the release of the Equipment from the relevant
     encumbrance and shall be entitled to recover such sum from the Lessee
     forthwith together with all costs and expenses incurred by the Lessor
     together with interest from the date of payment.

(c)  The parties hereto agree that notwithstanding that the Equipment may at any
     time be or become affixed to any land or buildings, it shall remain the
     personal property of the Lessor.  The Lessee shall ensure that all persons
     having any interest at any time in any such land or buildings in which the
     Equipment may from time to time be located shall within thirty (30) days of
     this Agreement or if later upon acquisition of such interest or prior to
     affixation, receive written notice of the relevant ownership thereof and
     obtain from such persons written waivers (in such form as the Lessor may
     reasonably require) of any rights which they may have or acquire in the
     Equipment.

(d)  The Lessee shall notify any holder(s) of any mortgage or any general
     floating charge on its assets or of any charge over its stocks and/or
     machinery or of the land or premises where the Equipment is kept and any
     landlord or owner thereof that the Equipment is the property of the Owner
     and the Lessor, and shall produce evidence to the Lessor of having so done
     and an acknowledgement from every such charges or mortgagee that the
     Equipment will not be subject to the mortgage or charge concerned.  The
     Lessee undertakes at all times during the leasing of any Equipment
     hereunder to notify the Lessor immediately in writing of the creation of
     any such mortgage or charge as is mentioned above and of any enforcement of
     the security thereof or of the appointment of any receiver of any part of
     its assets or property.

(e)  The Lessee shall at all times cause the Equipment to be kept in good repair
     and condition and properly serviced and maintained (reasonable wear and
     tear excepted) by properly skilled and qualified persons in accordance with
     the manufacturer's instructions and shall, at its own expense, replace all
     worn and damaged parts thereof and make all alterations, additions or
     modifications require by applicable law or regulation but shall not make
     any other alterations, additions or modifications.  All replacement parts
     and additions affixed to the Equipment shall, upon such replacement or
     affixation, become the property of the Lessor free and clear of all claims
     and encumbrances.  The Lessee shall not use or permit any of the Equipment
     to be used for any purpose for which it is not expressly designed or
     reasonably suitable for or for any unlawful purpose.

(f)  The Lessee shall keep in effect any permits, licenses or other
     authorisations which are from time to time necessary for the carrying out
     of its obligations under this Agreement.

(g)  Where the Equipment is mobile, the Lessee shall not, without the previous
     written consent of the Lessor and subject to such conditions as the Lessor
     may stipulate, suffer any Equipment to leave the 

                                       7
<PAGE>
 
     United Kingdom. The Lessee shall, forthwith upon request, provide written
     confirmation of the current location of the Equipment.

(h)  The Lessee shall not make any changes to or use the Equipment in any manner
     which would invalidate the manufacturer's or the Supplier's warranty.

(i)  The Lessee shall permit the Lessor or its authorised representatives at all
     reasonable times to inspect the Equipment and for that purpose to grant
     reasonable facilities for such inspection.

(j)  If and whenever required by the Lessor, the Lessee shall affix to the
     Equipment and any separate part or parts thereof plates, tags or markings
     ("Plates") indicating that the Equipment is the property of the Owner and
     the Lessor and the Plates shall be conspicuous and easy to read.  The
     Lessee shall ensure that all Plates remain so affixed and shall not
     obliterate deface or in any way cover up the same nor suffer any other
     person so to do.

11.  INSURANCE

(a)  The Lessee shall, at its own expense, from the earliest date that title to
     or risk in the Equipment passes to the Lessor until the Equipment is sold
     or disposed of by the Lessor.

     (i)  insure the Equipment against accident and third party and public
          liability;

     (ii) insure the Equipment respect of loss or damage howsoever arising, in
          an amount at least equal to its full market replacement value from
          time to time (on an agreed value basis) against all risks, naming the
          Lessor as an additional insured and in respect of a Total Loss of any
          Equipment, and in respect of any loss or damage to the Equipment which
          exceeds (Pounds)25,000 per occurrence, name the Lessor as loss payee;
          and

    (iii) against all other risks required by the Lessor which in its
          reasonable opinion it considers it prudent to insure the Equipment
          against.  If the Lessee is permitted to sub-let any Equipment the
          Lessee may require the sub-lessee to maintain such insurance provided
          that the Lessee indemnities the Lessor against any loss or damage
          resulting from failure by the sub-lessee to insure.

(b)  The Lessee shall effect the insurance in a form and with first-class
     reputable British Insurers to be approved by the Lessor and shall if so
     required by the Lessor produce to the Lessor, a copy of such policy and/or
     evidence of payment of the premium thereon within 21 days of such request
     or, as the case may be, payment.

(c)  The insurance referred to in Clause 1l (a)(i) shall name the Lessor, its
     respective directors, officers, employees and agents as additional
     assureds.

(d)  The Lessee shall ensure that all policies of insurance on or relating to
     the Equipment contain or are endorsed to include provisions that:

     (i)  the insurance shall not be invalidated by any act or omission by the
          Lessee which might otherwise constitute a violation of the terms or
          conditions of the policy;

     (ii) that at least 30 days prior written notice shall be given to the
          Lessor if the Lessee or the insurers wish to cancel terminate or not
          renew any such insurance; and

                                       8
<PAGE>
 
     (iii)  insurers shall waive any right of subrogation against the Lessor and
            any right of contribution from any other insurance carried by the
            Lessor.

(e)  If the Lessee shall not pay the premiums for such insurance as and when the
     same become due then the Lessor may pay such premiums or effect such
     insurance in respect of the Equipment with such insurers as it may think
     fit and the Lessee shall on demand forthwith repay to the Lessor such sums
     as may have been expended by the Lessor in effecting any such policy or
     making such payments together with interest at the Default Rate calculated
     on a daily basis from the time of payment by the Lessor to the time of
     receipt.

(f)  The Lessee shall not use or allow the Equipment to be used for any purpose
     not permitted by the terms or conditions of any such policy of insurance
     from the time being relating to the Equipment nor do or allow to be done
     any act or thing whereby such insurance may be invalidated.

(g)  The Lessee irrevocably authorises the Lessor to give a good discharge to
     the insurance company for any monies paid under any insurance policy
     entered into pursuant to or in connection with this Agreement.  The Lessee
     shall, if so requested by the Lessor, assign to the Lessor or to its order
     the rights, claims and benefits arising under any such policy and shall
     indemnify the Lessor in respect of any stamp duty payable on such
     assignment.

(h)  The Lessee shall forthwith notify the Lessor in writing of any occurrence
     which gives rise or might reasonably be expected to give rise to a claim
     under any policy of insurance entered into pursuant to or in connection
     with this Agreement.  The Lessee shall ensure that any claim is made
     promptly and shall not settle any claim without the prior written consent
     of the Lessor.

(i)  The Lessee shall hold any proceeds received from the insurer strictly on
     trust for the Lessor and shall forthwith pay such moneys to the Lessor.

12.  LOSS OR DAMAGE

(a)  The Lessee shall be solely responsible for and shall indemnify the Lessor
     in respect of all loss of or damage to any Equipment however caused
     occurring at any time or times before physical possession thereof is
     retaken by the Lessor (reasonable wear and tear only excepted) and whether
     or not such loss or damage results from accidental or other damage or from
     the negligence of the Lessee or any sub-lessee or any other person
     howsoever.

(b)  If the Equipment is damaged so as to impair its working efficiency but not
     beyond economic repair the Lessee shall immediately inform the Lessor and
     shall forthwith take all necessary steps to ensure that the Equipment is
     restored to its full working condition and repair as soon as practicable.
     The Lessor shall apply any insurance proceeds received in respect of such
     loss or damage in reimbursement to the Lessee of the cost of reinstatement
     or repairs on completion of the same PROVIDED THAT such proceeds may be
     applied first towards payment of any sums then owing by the Lessee to the
     Lessor under this Agreement or the Agreement to Acquire.

(c)  If during the Lease Term any Equipment is damaged so as to be beyond
     economic repair or if any Equipment is lost, stolen, seized, requisitioned
     or confiscated (a "TOTAL LOSS") the Lessee shall immediately notify the
     Lessor of the fact and shall pay to the Lessor within seven days of such
     notification such sum as would be due in the event of termination of the
     Agreement.  Upon the unconditional receipt of all sums due to the Lessor,
     the Lessor agrees, subject to the provisions of 

                                       9
<PAGE>
 
     Clause 19(d) to pay a sum equal to 97.5% of the insurance monies received
     by the Lessor in respect of such Total Loss to the Lessee by way of rebate
     of Rental.

13.  LESSEE'S INDEMNITIES

(a)  The Lessor shall not be liable to the Lessee for any loss, liability, claim
     or proceedings in respect of any injury or damage of whatever nature and
     however caused arising out of or in connection with Equipment or its use
     and the Lessee shall indemnify the Lessor, its directors, officers,
     employees and agents (each an "Indemnitee") on demand at all times against
     each and all claims, liabilities, losses, damages, demands, costs and
     charges incurred or suffered by any Indemnitee in connection with this
     Agreement, the Agreement to Acquire or the Equipment or any detects therein
     or any breakdown thereof or accident thereto or any injury or damage to
     persons or property occurring (directly or indirectly) as a result of the
     use, possession, transportation, return, sale or other disposition or
     presence of the Equipment, or its condition at any time or times or any
     product or strict liability relating to the Equipment.  This indemnity
     shall include all taxes, penalties fines and other impositions which may be
     imposed on any Indemnitee (whether by statute or otherwise) in connection
     with this Agreement, the Agreement to Acquire or the Equipment or any
     premises on which the Equipment may from time to time be located by the
     Lessee and so far always as any such indemnity may lawfully be given.

(b)  The Lessee shall indemnify the Lessor against, and shall promptly pay to
     the Lessor on demand, all costs and expenses incurred by the Lessor in
     collecting or attempting to collect any Rentals or other sums not paid on
     their due dates and in remedying any other failure of the Lessee to
     observe the terms and conditions of this Agreement, the Agreement to
     Acquire or any Schedule.

(c)  If and to the extent that any sum payable to the Lessor by way of
     indemnity proves to be insufficient by reason of taxation suffered thereon
     to indemnify the Lessor on an after tax basis for the cost incurred by it,
     the Lessee shall on demand pay to the Lessor such additional sum (after
     taking into account any taxation suffered by the Lessor thereon) as shall
     be required to indemnify the Lessor in respect of such insufficiency.

14.  OWNERSHIP OF EQUIPMENT AND ALLOWANCES

(a)  It is expressly understood that Ownership of the Equipment does not pass to
     the Lessee by virtue of this Agreement or any Schedule and the Lessee shall
     have no rights or interest to or in the Equipment save as expressly
     provided under this Agreement and any Schedule.

(b)  All risk or loss or damage to the Equipment shall (without affecting the
     Lessor's title to the Equipment) pass to the Lessee when title to the
     Equipment passes from the Seller to the Lessor under the terms of the
     Agreement to Acquire.

(c)  For the purposes of UK taxation, and irrespective of the accounting
     treatment to be adopted by the Lessee, or where the Lessee consists of more
     than one person, any such person, the Lessee or any person shall not claim
     capital allowances in respect of the Equipment and the Lessee and each such
     person undertakes that it shall not at any time use the Equipment in a way
     which will or could result in the Equipment being used otherwise than for a
     qualifying purpose (as defined by section 39 of the Capital Allowances Act
     1990).

(d)  The Lessee, and where the Lessee consists of more than one person, each
     such person, warrants that it is resident in the UK for UK tax purposes and
     undertakes that it shall remain resident in the UK for 

                                       10
<PAGE>
 
     UK tax purposes throughout the requisite period (as defined by Section 40
     of the Capital Allowances Act 1990).

15.  EARLY TERMINATION BY LESSEE

     The Lessee may, at any time on giving not less than three months' prior
     written notice to the Lessor determine the leasing of any Equipment
     comprised in a Schedule, subject always to all other obligations of the
     Lessee hereunder and under the relative Schedule being duly fulfilled, and
     upon payment of all sums due under clause 17.  Until receipt by the Lessor
     of all such sums the leasing of the Equipment under this Agreement shall
     continue in full force and effect.

16.  TERMINATION BY LESSOR

(a)  The Lessee hereby acknowledges and agrees that the occurrence of any Event
     of Default specified in Clauses 16(b)(i), (ii) and (iii) in respect of this
     Agreement or any Schedule shall go to the root of this Agreement and
     accordingly be a breach of a condition of this Agreement which the Lessor
     shall be entitled to treat as a repudiation by the Lessee of this Agreement
     and the Lessor shall be entitled if any such event, or any other Event of
     Default occurs, to give notice to the Lessee to terminate the leasing of
     the Equipment.

(b)  The occurrence of any of the following events shall be an Event of Default:

     (i)  the Lessee fails to pay any Rental or other sum due hereunder or under
          any Schedule, the Agreement to Acquire or any other agreement with the
          Lessor or with any Group Company on its due date for payment; or

     (ii) the Lessee shall fail to observe or perform any of the other terms and
          conditions of this Agreement, the Agreement to Acquire, any Schedule
          or any other agreement with the Lessor or with any Group Company; or

    (iii) any representation or warranty contained in this Agreement, the
          Agreement to Acquire, any Schedule or any other agreement with the
          Lessor or with any Group Company proves to have been inaccurate when
          made; or

     (iv) (aa) the Lessee, the Parent, the Seller, the Supplier or any other
               guarantor of the Lessee's obligations or any Associated Company
               or Independent Insurance (each a "RELEVANT PARTY") convenes any
               meeting of, or makes any arrangement or composition with, its
               creditors; or

          (bb) the Lessee or any Relevant Party shall have a petition for
               winding up or for the appointment of an administrator presented
               or shall pass a resolution for voluntary winding up (otherwise
               than for the purpose of amalgamation or reconstruction approved
               in writing by the Lessor) or shall have a receiver or
               administrative receiver appointed over any of its business or
               assets; or

          (cc) the Lessee or any Relevant Party ceases to carry on all or any
               substantial part of its business, disposes of all or a
               substantial part of its assets or attempts to do any of the same;
               or

                                       11
<PAGE>
 
          (dd) the Lessee or any Relevant Party is unable, or admits its
               inability to pay its debts as they fall due; or

          (ee) any proceedings shall be instituted by or against the Lessee or
               any Relevant Party seeking to adjudicate it bankrupt or
               insolvent, or seeking the liquidation, winding-up,
               reorganisation, arrangement, adjustment, protection, relief or
               composition on it or its debts under any law relating to
               bankruptcy, insolvency or reorganisation or relief of debtors, or
               seeking the entry of an order for relief or the appointment of a
               receiver, trustee, custodian or other similar official of it or
               any substantial part of its assets; or

          (ff) any event similar to any event referred to in this sub-paragraph
               (iv) inclusive occurs in relation to the Supplier under any other
               law applicable to the Supplier;

      (v) any indebtedness of the Lessee becomes due prior to its stated
          maturity by reason of default or is not paid at maturity or when
          validly demanded; or

     (vi) any distress, diligence, execution or similar process shall be levied
          or attempted against the Equipment or any of the assets of the Lessee;
          or

    (vii) there shall be any change in the ownership or shareholders of the
          Lessee which in the opinion of the Lessor is material; or

   (viii) any insurance policy effected in accordance with the terms of this
          Agreement or in respect of the Lessee's default under this Agreement
          or insolvency is cancelled, terminated or invalidated; or

     (ix) any default occurs under any credit and indemnity insurance provided
          in respect of the Lessee's obligation under this Agreement or any
          Schedule; or

      (x) any event of default (howsoever defined) occurs under the Credit
          Agreement; or

     (xi) the Parent or the Supplier fails to pay any sum due or to observe or
          perform any of the terms and conditions of the Parent Guarantee or
          Supplier's Guarantee respectively; or

    (xii) any Additional Obligor (as defined in the Direct Agreement) shall
          fail to perform or observe any obligation (payment or otherwise) to be
          assumed by such Additional Obligor in connection with the terms of the
          Direct Agreement; or

   (xiii) any event shall occur (whether or not within the control of the
          Lessee) which leads to the Lessor being of the reasonable opinion that
          its rights in respect of any Equipment may be prejudiced or put in
          jeopardy.

(c)  If the Lessor becomes entitled to terminate the leasing of the Equipment
     under this Agreement the Lessee will no longer have the Lessor's consent to
     possession of the Equipment.  The leasing of the Equipment under this
     Agreement will terminate immediately upon the Lessor giving the Lessee
     written notice that it is exercising its right to terminate this Agreement
     pursuant to this Clause 16.

(d)  At any time at which the Lessor is entitled to terminate the leasing of the
     Equipment under this Agreement the Lessor may at its absolute discretion
     elect to terminate the leasing only in relation to a specified item or
     items in a Schedule in which event payments due under Clause 17 in relation
     to such 

                                       12
<PAGE>
 
     termination shall be based on the proportion which the relevant item or
     items bear to the original cost of the Equipment in such Schedule.

17.  PAYMENTS DUE ON TERMINATION

17.1 In the event of termination whether under clauses 12, 15 or 16 the
     Lessor shall forthwith be entitled to recover from the Lessee as a debt an
     amount equal to the aggregate of:

     (a)  the sum of:


          (i)  all arrears of Rentals and all other sums due or in arrears on
               the date of such termination together with an amount equal to the
               Rental due (but for such termination) on the next Rental Payment
               Date (if any) falling (but for such termination) on or after such
               date of termination ("Next Rent Date"); and
          (ii) as compensation for such Lessor's financial loss, by way of
               additional rental, the sum ascertained in accordance with Annex B
               of any Schedule hereto ("Termination Value") for such Equipment
               for the Next Rent Date or, if none, for the last day of the
               Primary Period specified in the Schedule; and

     (b)  such sum as is necessary to compensate the Lessor for any additional
          cost incurred by virtue of the early repayment of its own fixed rate
          borrowings incurred to fund its expenditure on the Equipment (with
          respect to which a certificate of the Lessor shall be conclusive in
          the absence of manifest error).

17.2 (a)  The Lessor may at any time without notice or other formality combine
          any account held by the Lessor in the name of the Lessee or any
          Associated Company with any other account held by the Lessor or by any
          other Group Company in the name of the Lessee or Associated Company;
          and

     (b)  Whether or not any such account shall have been combined the Lessor
          may at any time apply, in the discharge of any amount payable by the
          Lessor to the Lessee on any account, the amount of any liability or
          prospective liability of the Lessee or any Associated Company to the
          Lessor or to any other Group Company on any account whatsoever
          including (without prejudice to that generality) any liability owed by
          the Lessee jointly with other persons or any Associated Company and
          any liability arising in or by contract, tort, restitution or
          assignment.

18.  RETURN OF THE EQUIPMENT

     (a)  Upon the termination of the leasing of Equipment, howsoever occurring,
          the Lessee shall return the Equipment to the Lessor in good working
          order and condition (reasonable wear and tear only excepted) and free
          and clear of all liens and encumbrances at its own risk and cost to
          such address as the Lessor may direct.

     (b)  In the event of default in the above obligation the Lessee grants the
          Lessor or its agent an irrevocable license to enter into or upon any
          premises where the Equipment may be located and shall indemnify the
          Lessor against any claim made in respect of any damage caused to such
          premises by any such entry or by the removal of the Equipment and
          shall pay to the Lessor on demand all expenses and costs incurred by
          the Lessor or its agent in retaking or attempting to retake possession
          of the Equipment.

                                       13
<PAGE>
 
19.  SALES AGENCY

     The Lessee shall be appointed the sales agent of the Lessor upon
     termination of the leasing of any Equipment on the following terms:

     (a)  So long as none of the events referred to in Clause 16(b) has occurred
          and is continuing the Lessee will be appointed, and shall be bound to
          act, as agent to negotiate on the Lessor's behalf a sale of the
          Equipment on the open market for an arm's length price to any third
          party not being connected (within the meaning thereof under S.839
          Income and Corporation Taxes Act 1988) with the Lessee.  The agency
          will have a duration of two months from the date of appointment and be
          determinable at any time thereafter.

     (b)  Any such sale as aforesaid shall be on terms agreed by the Lessor, at
          a price payable to the Lessor in cleared sterling funds in full on
          completion and shall be on an "as-is, where-is" basis, without
          recourse or warranty whatsoever and the Lessee shall not make any
          representations or warranties in respect of the Equipment (whether in
          respect of their description, fitness for purpose, satisfactory
          quality or otherwise) and the Lessee agrees to indemnify the Lessor in
          respect of the Equipment for any breach of condition warranty or other
          term implied by law or for any liability that may result from the
          Lessee's failure to comply with the provisions hereof.  The foregoing
          references to "liability" shall be deemed to include the costs
          incurred by the Lessor in defending any such claims as aforesaid.

     (c)  Provided the Lessee shall have complied with all its obligations under
          the Agreement, the Lessor shall, subject to Clause 19(d), pay to the
          Lessee by way of rebate of Rentals an amount equal to the percentage
          detailed in the Schedule of the Net Proceeds of Sale.

     (d)  If the Lessor determines that any payment which it is required to make
          to the Lessee by way of rebate of rental or otherwise will not or may
          not be fully deductible in computing its liability to corporation tax
          for the accounting period in which the payment is made, the Lessor
          shall be entitled to withhold or retain from that payment such amount
          as the Lessor determines to be necessary to enable it to occupy the
          same after-tax position as it would occupy if the payment were fully
          deductible as aforesaid provided that if after making any such payment
          the Lessor determines that any withholding under this clause has been
          calculated on an incorrect basis such adjustment shall be made between
          the Lessor and the Lessee as the Lessor determines to be necessary to
          enable the Lessor to occupy the same after tax position as it would
          occupy if no such adjustment were necessary.

20.  LESSEE'S REPRESENTATIONS AND WARRANTIES

(a)  Upon entry into this Agreement and upon each occasion it enters into a
     Schedule the Lessee represents and warrants to the Lessor that (save as
     disclosed in writing to the Lessor on that occasion):

          (i)  Status
               ------

               The Lessee is a company duly incorporated and validly existing
               under the laws of its place of incorporation with limited
               liability and has the corporate power to own its assets and carry
               on its businesses as they are now being conducted or as proposed
               to be conducted;

          (ii)  Corporate Power
                ---------------

                                       14
<PAGE>
 
               The Lessee has the corporate power to enter into and perform its
               obligations under this Agreement and any Schedule from time to
               time in force and has taken all necessary action to authorise the
               execution, delivery and performance thereof in accordance with
               their terms;

         (iii) Binding Obligations
               -------------------

               Each of this Agreement and any Schedule from time to time in
               force constitute legal, valid and binding obligations of the
               Lessee enforceable in accordance with its terms;

          (iv) Transactions permitted
               ----------------------

               The execution, delivery and performance of this Agreement and any
               Schedule from time to time in force does not and will not violate
               in any respect any provision of:

               (A)  any law;

               (B)  the Memorandum and Articles of Association of the Lessee; or

               (C)  any mortgage, agreement, undertaking or instrument to which
                    the Lessee is a party or which is binding upon it or its
                    assets, and does not and will not or result in the creation
                    or imposition of, or oblige the Lessee to create, any lien,
                    encumbrance or security interest on any of its assets or
                    undertaking;

          (v)  No Default
               ----------

               No event has occurred which constitutes a default under or in
               respect of any mortgage, agreement, undertaking or instrument to
               which the Lessee is a party or by which it or its assets may be
               bound or the acceleration of any obligation under any agreement
               relating to borrowed monies to which it is a party or which is
               binding upon it or its assets and no event has occurred which,
               with the giving of notice, lapse of time or both or the
               satisfying of other conditions would constitute a default under
               or in respect of any mortgage, agreement, undertaking or
               instrument and no event of the kind referred to in Clause 16(b)
               has occurred and is continuing;

          (vi) Accounts
               --------

               The most recent audited, consolidated (where appropriate)
               accounts of the Lessee (the "Accounts") having been prepared in
               accordance with the generally accepted United Kingdom accounting
               principles and practices consistently applied and in accordance
               with the provisions of the Companies Acts (true and complete
               copies of which have been supplied to the Lessor) give a true and
               fair view of the financial condition of the Lessee (and its
               subsidiaries) and the result of its (and its subsidiaries)
               operations for the period ended on the date to which the Accounts
               were prepared, and there has been no material adverse change in
               the financial condition of the Lessee (and its subsidiaries) as
               shown in the Accounts;

         (vii) No Litigation
               -------------

               No litigation, arbitration, tax claim or administrative
               proceedings are current or pending or, to the best of the
               Lessee's knowledge, information and belief threatened, 

                                       15
<PAGE>
 
               which would have a material adverse effect on the business,
               assets or financial condition of the Lessee or upon the ability
               of the Lessee to fulfil its obligations under this Agreement or
               any Schedule;

        (viii) Insurance Policies
               ------------------

               Neither the Lessee, any Associated Company nor any of their
               respective directors, officers, employees or agents has committed
               any act or omission, nor has any event or circumstance occurred
               which would invalidate, or entitle insurers to invalidate or
               terminate any insurance policy entered into pursuant to this
               Agreement or in respect of the Lessee's default or insolvency;

         (ix)  Credit Agreement
               ----------------

               No event has occurred which constitutes an event of default under
               or in respect of the Credit Agreement.

     (b)  The representations and warranties in Clauses 20(a) (i) to (ix)
          inclusive shall further be deemed to be repeated by the Lessee on and
          as of each date for payment of Rental as if made with reference to the
          facts and circumstances existing at that time.

21.  MISCELLANEOUS

     (a)  No relaxation, neglect, delay or indulgence on the part of the Lessor
          in enforcing the terms and conditions of this Agreement or any
          Schedule shall prejudice the strict rights of the Lessor or be
          construed as a waiver thereof nor shall any waiver by the Lessor of
          any breach of this Agreement or any Facility Letter or Schedule, or
          any deemed repudiation thereof, operate as a waiver of any subsequent
          or continuing breach thereof or any subsequent such repudiation.

     (b)  The Lessee shall not assign any of its rights, obligations and
          liabilities under this Agreement or any document entered into or to be
          entered into in connection with or pursuant to this Agreement.  The
          Lessor may from time to time assign all of its rights, obligations and
          liabilities under this Agreement, the Agreement to Acquire and any
          Schedule or sell or dispose of its rights in any Equipment.

     (c)  The headings in this Agreement are inserted for convenience and shall
          not affect the interpretation thereof.  References to any person shall
          include its successors and assigns.  References to a statute or
          statutory provision shall include reference to any statutory
          modification or re-enactment of the same.  References to "this
          Agreement" shall mean this "Lease Master Agreement" and, unless the
          context otherwise requires, each Schedule.

     (d)  Every notice, request, demand or other communication required or
          permitted to be given under this Agreement shall be sufficiently given
          if in writing, delivered personally or by prepaid first class letter,
          telex or facsimile to the registered office from time to time of the
          party to be served and be deemed to have been received, subject as
          otherwise provided in this Agreement:

          (i)  in the case of telex, on receipt by the sender of the answerback
               code of the recipient at the end of the transmission (provided
               transmission is completed during normal business hours on a
               business day in the place of receipt and if not then shall be

                                       16
<PAGE>
 
               deemed to have been received at the commencement of normal
               business hours on the next Business Day); or

          (ii) in the case of facsimile, at the time of despatch (provided that
               if the date of despatch is not a business day in the place of
               receipt it shall be deemed to have been received at the
               commencement of normal business hours on the next Business Day);
               and

         (iii) in the case of a letter, when delivered personally to the party
               to be served or any director thereof or two days after being put
               in the post.

     (e)  If any provision of this Agreement is to any extent held to be
          invalid, illegal or unenforceable under any applicable law, the
          validity, legality and enforceability, of the remaining provisions
          (and any other application of those provisions) shall not in any way
          be affected or impaired.  Where the provisions of any applicable law
          may be waived, they are where appropriate waived by the parties to the
          fullest extent possible, to the intent that this Agreement shall be a
          valid, binding and enforceable agreement.

     (f)  Punctual payment of amounts payable by the Lessee and timely
          performance by the Lessee of each of its obligations under this
          Agreement shall be of the essence and shall be conditions of this
          Agreement.  Notwithstanding any other provisions hereof, the Lessor
          shall be entitled to set-off or withhold from any sum or sums
          expressed in this Agreement to be payable to the Lessee by such Lessor
          any amount due and payable to any Group Company from the Lessee on any
          account whatsoever.  In the case of failure of the Lessee to comply
          with any provision of this Agreement, the Lessor shall have the right
          (but not the obligation) to effect such compliance and the Lessee
          shall reimburse such Lessor upon demand for expenses related thereto.

     (g)  This Agreement shall not be varied except by agreement in writing
          between the parties hereto.  The rights and remedies herein provided
          are cumulative with and not exclusive of any rights or remedies
          provided by law.  The indemnities by the Lessee contained in this
          Agreement shall continue in full force and effect notwithstanding the
          termination of the leasing of any Equipment through effluxion of time
          or otherwise or the disposal of the Equipment.

     (h)  This Agreement and any Schedules shall in all respects be governed by
          and interpreted in accordance with the laws of England.  The Lessee
          hereby submits to and agrees to accept the non-exclusive jurisdiction
          of the English Courts in connection with any dispute or other matter
          arising out of this Agreement or any provision thereof.

AS WITNESS the hands of the persons duly authorised on behalf of the Lessor and
the Lessee the day and year first above written.

                                       17
<PAGE>
 
                                     ANNEX

                CONDITIONS PRECEDENT TO THE LESSOR'S OBLIGATIONS

1.   The Lessor shall have received each of the following:

     (a)  this Agreement and the Schedules, duly executed and delivered by the
          Lessee;

     (b)  the Agreement to Acquire, duly executed and delivered by the parties
          thereto;

     (c)  the Parent Guarantee, duly executed and delivered by the Parent;

     (d)  the Supplier's Guarantee, duly executed and delivered by the Supplier;

     (e)  evidence satisfactory to the Lessor that credit and indemnity
          insurance in form and substance satisfactory to the Lessor has been
          effected;

     (f)  evidence that the insurances required pursuant to Clause 11 has been
          effected in form and substance satisfactory to the Lessor;

     (g)  a copy, certified as a true copy by a duly authorised officer of the
          Lessee, the Seller, the Parent or the Supplier, as the case may be,
          of:

          (i)  the constitutional documents of such company;

          (ii) a board resolution of such company in form and substance
               satisfactory to the Lessor; and

         (iii) a certificate setting out the names and specimen signatures of
               persons authorised to sign such documents on behalf of such
               company;

     (h)  a legal opinion from Texan lawyers, Vinson & Elkins, in form and
          substance satisfactory to the Lessor;

     (i)  evidence that all applicable customs, duties and taxes in respect of
          the sale and purchase of the Equipment have been discharged;

     (j)  written consent to the lease financing of the Equipment from Barclays
          Bank Plc (as agent) pursuant to the terms of the Credit Agreement;

     (k)  evidence that the Lessee has pursuant to Clause 10(d) given notice to
          the holders of any mortgage or floating charge together with an
          acknowledgement from such mortgagee or chargee that the Equipment will
          not be subject to the mortgage or charge concerned;

     (l)  an invoice issued in favour of the Lessor duly executed by a duly
          authorised officer of the Seller specifying the total purchase cost of
          the Equipment and complying with laws and regulations as to VAT and
          payment instructions issued by the Seller to the Lessor in respect of
          the same;

     (m)  copies of all permissions (including planning permission), consents,
          authorisation and approvals of any government agency or authority
          required in connection with the execution,
<PAGE>
 
          delivery and performance of this Agreement and any Schedules or the
          importation, ownership or use of the Equipment;

     (n)  evidence of the appointment of an agent for the service of process in
          England by the Supplier pursuant to the Supplier's Guarantee and the
          Agreement to Acquire.

2.   The Equipment shall have been delivered to, and accepted by, the Lessee and
     the Lessee shall have delivered to the Lessor duly executed Acceptance
     Certificates for the Equipment.
<PAGE>
 
SIGNED BY                       )
for and on behalf of            )
ING LEASE (UK) LIMITED          )

in the presence of:
(Name):                         )
Signature:                      )
Address:                        )



SIGNED BY                       )
for and on behalf of            )
INDEPENDENT ENERGY              )
UK LIMITED                      )

in the presence of:
(Name):                         )
Signature:                      )
Address:                        )
<PAGE>
 
                            EQUIPMENT SCHEDULE NO.
                          ---------------------------

DATED:  30th October 1997

PARTIES:

1.   ING LEASE (UK) LIMITED, Registered No. 2323082, whose registered office is
     at 107 Cheapside, London EC2V 6HJ ("the Lessor"); and

2.   INDEPENDENT ENERGY UK LIMITED, Registered No. 3033406 whose registered
     office is at 30 Aylesbury Street, London EC1R 0ER ("the Lessee").

TERMS:

1.  LEASE BY THE LESSOR

     The Lessor agrees to let and the Lessee agrees to take on lease the
     Equipment described in the Annex A hereto on the terms of this Equipment
     Schedule.

2.  LEASE MASTER AGREEMENT

     This Schedule incorporates the terms set out in the Lease Master Agreement
     of even date herewith between the Lessor and the Lessee as from time to
     time varied or amended by agreement between us (the "Master Agreement").
     In the event of any conflict between the terms hereof and the terms of the
     Master Agreement the terms hereof will prevail.

3.   TOTAL PURCHASE COST OF EQUIPMENT
     (Pounds)2,665,500 (exclusive of Value Added Tax)

4.   LEASE PERIOD

     (a)  PRIMARY PERIOD from the Acceptance Date to 31st October 2003.

(b)  CONTINUATION PERIODS.  On expiry of the Primary Period the letting of the
     Equipment will (unless terminated in accordance with the Master Agreement)
     continue for successive Continuation Periods of twelve months each in
     accordance with the terms of the Master Agreement, the total duration of
     which shall not exceed the useful economic life of the Equipment.

5.   RENTALS

     (a)  PRIMARY PERIOD

          Rentals during the Primary Period are payable as follows:

          RENTAL PAYMENT DATES             RENTALS
          31st January 1998                140,000.00
          30th April 1998                  380,925.00
          31st July 1998                   189,263.00
<PAGE>
 
          31st October 1998                226,272.00
          31st January 1999                136,272.00
          30th April 1999                  136,272.00
          31st July 1999                   136,272.00
          31st October 1999                136,272.00
          31st January 2000                136,272.00
          30th April 2000                  114,712.00
          31st July 2000                   128,359.75
          31st October 2000                128,359.75
          31st January 2001                128,359.75
          30th April 2001                  128,359.75
          31st July 2001                   128,359.75
          31st October 2001                128,359.75
          31st January 2002                128,359.75
          30th April 2002                  128,359.75
          31st July 2002                   128,359.75
          31st October 2002                128,359.75
          31st January 2003                128,359.75
          30th April 2003                  128,359.75
          31st July 2003                   128,359.75
          31st October 2003                128,359.75

(b)  CONTINUATION PERIODS

     Subject to revision in accordance with the provisions of Clause 8 of the
     Master Agreement the rental payable in respect of any Continuation Periods
     shall be equivalent to 0.25% of the total purchase cost of the Equipment
     set out above and payable annually in advance on the first day of each
     Continuation Period.  Rentals are not returnable in the event of a
     termination of the letting of the Equipment during the course of a
     Continuation Period.

(c)  GENERAL

     Each Rental together with VAT is payable by the Lessee to the account of
     the Lessor with Barclays Bank plc., Cheapside Business Centre, Atlas House,
     7-10 King Street, London EC2V 8AU account number 00253456 or to such
     account as the Lessor may from time to time specify in sterling so that the
     rental is received by the Lessor in cleared funds on or before the due date
     for payment.

     The Rentals payable hereunder are subject to adjustment in accordance with
     the provisions of the Master Agreement.

6.  ACCEPTANCE

     The Lessee hereby warrants that:

     (a)  the Equipment has been delivered to and accepted by the Lessee;

     (b)  full and proper information and manuals relating to its use operation
          and maintenance have been received by the Lessee;

     (c)  the Equipment has been insured in accordance with the provisions
          contained therefor in the Master Agreement;
<PAGE>
 
     (d)  the Equipment shall be installed and commissioned in accordance with
          the manufacturer's specifications.

7.  REBATE OF RENTAL

     In the event of a sale of the Equipment the Lessor shall pay to the Lessee,
     in accordance with the provisions of the Master Agreement, a rebate of
     rental equal to 97.5% of the Net Proceeds of Sale.


Signed by                       )
for and on behalf of            )
ING LEASE (UK) LIMITED          )
in the presence of:             )

(Name):                         )
Signature:                      )
Address:                        )



Signed by                       )
for and on behalf of            )
INDEPENDENT ENERGY              )
UK LIMITED                      )
in the presence of:             )

(Name):                         )
Signature:                      )
Address:                        )
<PAGE>
 
                                    ANNEX A

                          DESCRIPTION OF THE EQUIPMENT

Two (2) Stewart & Stevenson Services, Inc. 16 cylinder superior natural gas
engine with Baylor 2000kw generator sets with Engine Model Nos. 2416-G and
Serial No. 333629 and 333599 respectively and with Generator Model No. G655RST-
467 and Serial Nos.  ES60RST192-1-B and ES60RST191-1-B respectively together
with the parts, components and accessories more particularly described in the
attached packing lists dated 25th September 1997.

One (1) Stewart & Stevenson Services, Inc. 16 cylinder superior natural gas
engine with Baylor 2000kw generator sets with Engine Model No. 2416-G and Serial
No. 333459 and with Generator Model No. G655RST-467 and Serial No. KR60RST115-1-
B together with the parts, components and accessories more particularly
described in the attached packing lists dated 11th March 1997.
<PAGE>
 
                                    ANNEX B
                                    -------

                            TERMINATION VALUE TABLE
                            -----------------------

For any particular Rental Payment Date the Termination Value in respect of the
Equipment shall be the amount set out opposite such date in the column headed
"Termination Value".

RENTAL PAYMENT DATE          TERMINATION VALUE
- ----------------------       ------------------
                                 (Pounds)

31st October 1997                2,665,500
31st January 1998                2,825,606
30th April 1998                  2,747,886
31st July 1998                   2,423,702
31st October 1998                2,287,643
31st January 1999                2,107,660
30th April 1999                  2,017,067
31st July 1999                   1,924,770
31st October 1999                1,830,448
31st January 2000                1,731,258
30th April 2000                  1,633,053
31st July 2000                   1,554,365
31st October 2000                1,459,658
31st January 2001                1,359,289
30th April 2001                  1,259,637
31st July 2001                   1,157,559
31st October 2001                1,053,031
31st January 2002                  944,528
30th April 2002                    835,252
31st July 2002                     722,995
31st October 2002                  608,250
31st January 2003                  494,393
30th April 2003                    376,612
31st July 2003                     253,910
31st October 2003                  128,360
 

<PAGE>
 
                                  EXHIBIT 21

                             Subsidiary Companies



                                   Country of      
Name                              Incorporation     Percentage Shareholding


I.E. (Caythorpe) Ltd                 England        Ordinary shares   100%  
Independent Energy Generation Ltd    England        Ordinary shares   100%
Independent Energy Services Ltd      England        Ordinary shares   100%
Independent Energy Ltd               England        Ordinary shares   100%
Independent Energy Resources Ltd     England        Ordinary shares   100%
Independent Energy (UK) Limited      England        Ordinary shares   100%

<PAGE>
 
                     [LETTERHEAD OF PANNELL KERR FORSTER]
 
                                                                   EXHIBIT 23.3
 
                      CONSENT OF INDEPENDENT ACCOUNTANTS
   
  As independent accountants, we hereby consent to the incorporation by
reference in this Amendment No. 2 to the Registration Statement on Form F-1 of
our report dated 4 June 1998 relating to the financial statements of
Independent Energy Holdings plc as of 31 December 1995, 30 June 1996 and 1997
and 31 March 1998 and for each of the years ended 31 December 1994 and 1995,
the six months ended 30 June 1996, the fiscal year ended 30 June 1997 and the
nine months ended 31 March 1998, and to all references to our firm included in
this Form F-1.     
 
                                          /s/ Pannell Kerr Forster
                                          -------------------------------------
                                          Pannell Kerr Forster,
                                          Chartered Accountants and Registered
                                           Auditors
 
Nottingham, England
   
21 July 1998     


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