ECC INTERNATIONAL CORP
10-Q, 1996-02-13
MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES
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<PAGE>   1
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, DC  20549

                                   FORM 10-Q

(Mark One)

[ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934

For the quarterly period ended         December 31, 1995

                                       or

[   ] TRANSACTION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934

For the transition period from               to

Commission File Number:         1-8988

                            ECC International Corp.
             (Exact name of registrant as specified in its charter)

           Delaware                                      23-1714658
  (State or other jurisdiction              (I.R.S. Employer Identification No.)
of incorporation or organization)


175 Strafford Avenue, Suite 116, Wayne, PA                            19087-3377
(Address of principal executive offices)                              (Zip Code)

                                 (610) 687-2600
              (Registrant's telephone number, including area code)

                                 Not Applicable
        (Former name, former address and former fiscal year, if changed
                               since last report)

     Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding twelve months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for at least the past 90 days.    [ X ] Yes     [  ] No

     As of December 31, 1995, there were  7,754,769 shares of the Registrant's
Common Stock, $.10 par value per share, issued and outstanding.

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

- -------------------------------------------------------------------------------
<PAGE>   2
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                         CONSOLIDATED INCOME STATEMENTS
                  SIX MONTHS ENDED DECEMBER 31, 1995 AND 1994
                 (In Thousands Except Share and Per Share Data)
                                  (Unaudited)

<TABLE>
<CAPTION>
                                                  Six Months         Six Months
                                                     Ended              Ended

                                                   12/31/95           12/31/94
                                                  ----------         ----------
<S>                                               <C>                <C>
Net Sales                                         $   58,671         $   43,332

Cost of Sales                                         45,907             32,187
                                                  ----------         ----------

Gross Profit                                          12,764             11,145
                                                  ----------         ----------

Expenses:
 Selling, General & Administrative                     6,763              6,188
 Systems Development                                     184                681
                                                  ----------         ----------

    Total Expenses                                     6,947              6,869
                                                  ----------         ----------

Operating Income                                       5,817              4,276
                                                  ----------         ----------

Other Income (Expense):
 Interest Income                                         113                 76
 Interest Expense                                       (851)              (673)
 Other - Net                                            (130)               (32)
                                                  ----------         ----------

    Total Other Expense                                 (868)              (629)
                                                  ----------         ----------

Income Before Income Taxes                             4,949              3,647

Provision for Income Taxes                             1,703              1,122
                                                  ----------         ----------

Net Income                                        $    3,246         $    2,525
                                                  ==========         ==========

Earnings Per Common Share and
Common Share Equivalents                          $     0.41         $     0.32
                                                  ==========         ==========

Weighted Average Number of Common and
Common Share Equivalents Outstanding               7,923,003          7,924,471
</TABLE>

        See accompanying notes to the consolidated financial statements.
<PAGE>   3
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                         CONSOLIDATED INCOME STATEMENTS
                 THREE MONTHS ENDED DECEMBER 31, 1995 AND 1994
                 (In Thousands Except Share and Per Share Data)
                                  (Unaudited)



<TABLE>
<CAPTION>
                                                     Three Months    Three Months
                                                         Ended           Ended
                                                       12/31/95        12/31/94
                                                     ------------    ------------
   <S>                                                <C>             <C>
   Net Sales                                          $   31,691      $   22,676
                                                  
   Cost of Sales                                          25,278          17,264
                                                      ----------      ----------
                                                  
   Gross Profit                                            6,413           5,412
                                                      ----------      ----------
                                                  
   Expenses:                                      
     Selling, General & Administrative                     3,505           3,004
     Systems Development                                     125             473
                                                      ----------      ----------
                                                  
                  Total Expenses                           3,630           3,477
                                                      ----------      ----------
                                                  
   Operating Income                                        2,783           1,935
                                                      ----------      ----------
                                                  
   Other Income (Expense):                        
     Interest Income                                          50              27
     Interest Expense                                       (387)           (316)
     Other - Net                                             (70)              5
                                                      ----------      ----------
                                                  
                  Total Other Expense                       (407)           (284)
                                                      ----------      ----------
                                                  
   Income Before Income Taxes                              2,376           1,651
                                                  
   Provision for Income Taxes                                817             462
                                                      ----------      ----------
                                                  
   Net Income                                         $    1,559      $    1,189
                                                      ==========      ==========
                                                  
   Earnings Per Common Share and                  
    Common Share Equivalents                          $     0.20      $     0.15
                                                      ==========      ==========
                                                  
   Weighted Average Number of Common and          
    Common Share Equivalents Outstanding               7,908,195       7,856,795
</TABLE>                                         

        See accompanying notes to the consolidated financial statements.
<PAGE>   4
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                          CONSOLIDATED BALANCE SHEETS
                                 (In Thousands)

<TABLE>
<CAPTION>
                                              (Unaudited)      (Audited)
                                                12/31/95        6/30/95
                                              -----------      ---------
<S>                                             <C>            <C>
ASSETS

Current Assets:
 Cash                                           $ 5,165         $ 3,535
 Accounts Receivable, Net                        15,534           8,778
 Costs and Estimated Earnings in Excess
  of Billings on Uncompleted Contracts           29,579          39,752

 Inventories
    Raw Material                                  8,381           6,897
    Work in Process                               5,008           1,998
    Finished Goods                                1,104           1,140

 Prepaid Expenses and Other                       1,733           1,764
                                                -------         -------

    Total Current Assets                         66,504          63,864

Property, Plant and Equipment - Net              24,572          24,007

Other Assets                                      1,936           1,868
                                                -------         -------

    Total Assets                                $93,012         $89,739
                                                =======         =======

                                                                    Continued...
</TABLE>
<PAGE>   5
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                    CONSOLIDATED BALANCE SHEETS (Continued)
                                 (In Thousands)

<TABLE>
<CAPTION>
                                                    (Unaudited)      (Audited)
                                                     12/31/95         6/30/95
                                                    -----------      ---------
<S>                                                   <C>             <C>
LIABILITIES & STOCKHOLDERS' EQUITY

Current Liabilities:
   Temporary Credit Facility                          $     0         $ 2,534
   Current Portion of Long-Term Debt                    3,000           3,600
   Accounts Payable                                    10,975           7,197
   Accrued Compensation                                 3,939           4,093
   Advances on Long-Term Contracts                      1,156           1,395
   Accrued Profit Sharing                                 812             672
   Other Accrued Expenses                               2,516           3,390
                                                      -------         -------

      Total Current Liabilities                        22,398          22,881
                                                      -------         -------

Deferred Income Taxes                                   1,569           1,569
                                                      -------         -------

Long-Term Debt                                         16,235          16,250
                                                      -------         -------

Commitments and Contingencies

Stockholders' Equity:
   Common stock, $.10 par; authorized
    20,000,000 shares at 12/31/95 and
    6/30/95; reserved for stock options
    and other obligations to issue stock,
    1,450,183 shares at 12/31/95 and
    2,157,528 shares at 6/30/95; issued
    and outstanding, 7,754,769 shares
    at 12/31/95 and 7,657,846 at 6/30/95                  775             766
   Preferred stock, $.10 par; authorized
    1,000,000 shares at 12/31/95 and at
    6/30/95; issued and none outstanding
    at 12/31/95 and 6/30/95                                --              --
   Capital in Excess of Par                            22,401          21,822
   Cumulative Translation Adjustment                      (18)             45
   Retained Earnings                                   29,652          26,406
                                                      -------         -------

Total Stockholders' Equity                             52,810          49,039
                                                      -------         -------

Total Liabilities & Stockholders' Equity              $93,012         $89,739
                                                      =======         =======
</TABLE>

        See accompanying notes to the consolidated financial statements.
<PAGE>   6
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                            FOR THE SIX MONTHS ENDED
                           DECEMBER 31, 1995 AND 1994
                                 (In Thousands)
                                  (Unaudited)

<TABLE>
<CAPTION>
                                                                  Six Months      Six Months
                                                                     Ended           Ended
                                                                   12/31/95        12/31/94
                                                                  ----------      ----------
<S>                                                                 <C>            <C>
Cash Flows From Operating Activities:
   Net Income                                                       $ 3,246        $  2,525
   Items Not Requiring Cash:
   Depreciation                                                       1,819           1,674
   Provision for Doubtful Accounts                                       65              --
   Deferred Income Taxes                                                 --            (129)
Changes in Certain Assets and Liabilities:
   Accounts Receivable                                               (6,821)         (1,569)
   Cost and Estimated Earnings in Excess
       of Billings on Uncompleted Contracts                          10,173          (7,982)
   Inventories                                                       (4,458)            308
   Prepaid Expenses and Other                                            31            (189)
   Accounts Payable                                                   3,778           1,164
   Advances on Long-Term Contracts                                     (239)          1,337
   Accrued Expenses                                                    (888)           (254)
                                                                    -------        --------

Net Cash Provided By (Used In) Operating Activities                   6,706          (3,115)
                                                                    -------        --------

Cash Flows From Investing Activities:
   Additions to Property, Plant and Equipment                        (2,384)         (2,665)
   Other                                                               (131)           (408)
                                                                    -------        --------

Net Cash Used In Investing Activities                                (2,515)         (3,073)
                                                                    -------        --------

Cash Flows From Financing Activities:
   Proceeds From Issuance of Common Stock, Options
    Exercised and Warrants, Including Related Tax Benefit               588           5,398
   New Borrowings under Term Loan                                        --           9,000
   Repayments under Term Loan                                        (1,500)             --
   New Borrowings under Revolving Credit Facility, Net               (1,649)         10,135
   Repayment of Long-Term Debt under Revolving Credit
    Agreement and Notes Payable                                          --         (17,568)
                                                                    -------        --------

Net Cash (Used In) Provided By Financing Activities                  (2,561)          6,965
                                                                    -------        --------

Net Increase in Cash                                                  1,630             777

Cash at Beginning of the Period                                       3,535           2,600
                                                                    -------        --------

Cash at End of the Period                                             5,165           3,377
                                                                    =======        ========
</TABLE>

                                                                    Continued...
<PAGE>   7
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                            FOR THE SIX MONTHS ENDED
                     DECEMBER 31, 1995 AND 1994 (Continued)
                                 (In Thousands)
                                  (Unaudited)



<TABLE>
<CAPTION>
                                                       Six Months       Six Months
                                                          Ended            Ended
                                                        12/31/95         12/31/94
                                                       ----------       ----------
<S>                                                      <C>              <C>
Supplemental Disclosure of  Cash Flow Information:
Cash Paid During the Year For:

   Interest                                              $  870           $  369
   Income Taxes                                          $2,216           $1,839
</TABLE>                                                        

        See accompanying notes to the consolidated financial statements.
<PAGE>   8
              NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS



1.   The accompanying statements are unaudited and have been prepared by ECC
     pursuant to the rules and regulations of the Securities and Exchange
     Commission. The June 30, 1995 balance sheet was derived from audited
     financial statements but does not include all disclosures required by
     generally accepted accounting principles. In the opinion of management such
     consolidated financial statements contain all adjustments, consisting of
     only normal recurring adjustments, necessary to present fairly the
     consolidated financial position, results of operations and cash flows for
     the interim periods presented. The aforementioned consolidated financial
     statements have been prepared substantially in conformity with the
     accounting principles reflected in the consolidated financial statements
     included in the Company's Annual Report on Form 10-K for the fiscal year
     ended June 30, 1995.

2.   Earnings per share for the six and three month periods ended December 31,
     1995 and 1994 are based on net income divided by the weighted average
     number of common share and common share equivalents outstanding.

     Common stock equivalents (stock options, warrants and Employee Stock
     Purchase Plan) are excluded from the calculation of per share data when
     their dilutive effect is not material.

3.   During the second quarter of fiscal year 1996, the Company executed an
     Amendment to its loan facility increasing the maximum available credit
     under the revolving credit portion of the loan facility from $11.0 million
     to $15.0 million. The amendment also increased the maximum available credit
     to the Company's wholly owned subsidiary, ECC Simulation Limited from $2.0
     million to $4.0 million. The original payment terms and covenants of the
     loan facility remain in effect.
<PAGE>   9
                    ECC INTERNATIONAL CORP. AND SUBSIDIARIES
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS


a)   Material Changes in Financial Condition

     During the six month period ended December 31, 1995, the Company's
     principal sources of cash were receipts on accounts receivable and proceeds
     from the exercise of stock options. The principal uses of these and
     existing funds were to make payments on the term loan and revolving credit
     facility and to finance the increase in inventories as well as acquisitions
     of property, plant and equipment.

     Costs and estimated earnings in excess of billings on uncompleted contracts
     decreased and accounts receivable increased due to significant billings on
     several of the Company's contracts which were completed during the second
     quarter of fiscal year 1996 or are substantially near completion. Payments
     on these billings were received in January 1996.

     Raw material inventory increased primarily due to the continued production
     of vending machines for stock in anticipation of future sales orders.

     Work in process inventory increased primarily due to unabsorbed overhead.
     Overhead is absorbed based on an annualized projected rate. Management
     expects that volume during the remaining fiscal 1996 quarters will support
     the currently budgeted overhead rate.

     Finished goods inventory increased primarily due to the completion of
     vending machines in late December which were not shipped until January.

     The increase in accounts payable of approximately $3.8 million is primarily
     the result of material purchases in the vending operation, as well as, raw
     material purchase requirements under one of the Company's major contracts.

     During the second quarter of fiscal year 1996, the Company executed an
     Amendment to its loan facility increasing the maximum available credit
     under the revolving credit portion of the loan facility from $11.0 million
     to $15.0 million. The amendment also increased the maximum available credit
     to the Company's wholly owned subsidiary, ECC Simulation Limited from $2.0
     million to $4.0 million. The original payment terms and covenants of the
     loan facility remain in effect. The Company is required to make quarterly
     payments of principal on the term loan in the amount of $750,000 during
     fiscal year 1996.

     During fiscal year 1996, the Company anticipates spending approximately
     $4.5 million to purchase new machinery and equipment, continue
     refurbishment of the older areas of the Orlando facility and to make
     leasehold improvements to the leased vending and UK facilities.

     Due to the continued growth of the UK operation, the Company signed a new
     lease in December 1995 for approximately 50,000 square feet near the
     existing UK leased facility. Currently, the Company intends to use both
     facilities. The move to this new location will be completed by the third
     quarter of fiscal year 1996.
<PAGE>   10
     Other than as stated above, the Company has no other material commitments
     for capital expenditures. Management believes that with proceeds from the
     revolving credit facility and its projected cash flow the Company will have
     sufficient resources to meet current and future operating commitments.

b)   Material Changes in Results of Operations

     Sales increased for the six and three month periods ended December 31, 1995
     as compared to the same periods ended December 31, 1994. The increase in
     sales is the result of increased volume, particularly in the domestic
     training operation. The sales volume increase for the training operation is
     primarily the result of continued progress on a large cost plus incentive
     fee contract and one large fixed price contract as well as several smaller
     contracts. The UK and vending operation contributed marginally to the
     increase in sales volume over the corresponding six and three month periods
     in the prior fiscal year. The increases in domestic training sales volume
     were offset by the substantial completion of two fixed price type contracts
     during the first two quarters of fiscal year 1996.

     Gross margin as a percentage of sales decreased for the six and three month
     periods ended December 31, 1995 versus the same periods ended December 31,
     1994. The decrease in gross margin is largely the result of the Company's
     change in contract mix in the domestic training operation. While the
     Company has experienced an increase in volume on its' large cost plus type
     contracts, these contracts generally yield lower gross margins than the
     fixed price type. In addition, adjustments were taken to the gross margin
     of two fixed price domestic contracts, which were substantially completed
     during the six month period ended December 31, 1995. These gross margin
     adjustments were primarily the result of protracted acceptance schedules
     which resulted in higher than previously anticipated costs. Higher costs
     than originally anticipated were also incurred on two contracts of the UK
     operation resulting from an increase in training requirements and overtime
     incurred to meet milestone deadlines. These decreases in gross margin were
     slightly offset by an improved margin in the bottle vending operation as
     efficiencies continued to be achieved and production costs declined.

     Sales volume was less than the first quarter in the vending division due to
     a seasonal slowdown in the vending industry. This slowdown is expected to
     continue through the third quarter of fiscal year 1996. As a result of the
     seasonal slowdown and refinements made to the beverage vending machine to
     permit dispensing of 20 ounce bottles, contract labor was reduced during
     the second quarter. Management expects to increase personnel levels to
     accommodate anticipated sales orders of the new bottle vendor during the
     fourth quarter of fiscal year 1996.

     Selling, general and administrative expenses increased for the six and
     three month periods ended December 31, 1995 compared to the six and three
     month periods ended December 31, 1994. The increase is primarily the result
     of higher salaries and advertising costs in the vending division as
     marketing efforts are expanded.

     Systems development expense decreased for the quarter and six month period
     ended December 31, 1995 versus the quarter and six month period ended
     December 31, 1994. The decrease is the result of the reduction of
     development costs associated with the new model frozen/refrigerated vending
     machine which is now in production.

     Interest expense increased for the quarter and six month period ended
     December 31, 1995 versus the corresponding quarter and six month period in
     the previous fiscal year. The increase in interest expense is the result of
     higher borrowings under the Company's revolving credit agreement during the
     quarter and six month period ended December 31, 1995.
<PAGE>   11
                           PART II. OTHER INFORMATION

                             ECC INTERNATIONAL CORP.


Item 4. Submission of Matters to a Vote of Security Holders

     At the Company's Annual Meeting of Stockholders held on December 6, 1995,
     the following proposals were adopted by the vote specified below:

<TABLE>
<CAPTION>
                                                                Broker
Proposal                                For          Against   Abstain   NonVotes
<S>                                     <C>          <C>        <C>       <C>
1) To elect the Board
   of Directors

           Julian Demora                5,659,747    710,085      --        --
           Ajit W. Hirani               6,340,299     29,533      --        --
           Martin S. Kaplan             6,310,447     59,385      --        --
           Herbert Krasnow              5,686,095    683,737      --        --
           Jesse Krasnow                6,336,895     32,937      --        --
           Thomas E. McGrath            6,340,495     29,337      --        --
           Merrill A. McPeak            6,335,575     34,257      --        --
           George W. Murphy             6,341,694     28,138      --        --

2) To Approve the Company's
   1996 Employee Stock
   Purchase Plan                        6,206,638     92,719    70,475      --



3) Ratification of
   Coopers & Lybrand
   as auditors                          6,310,477     16,643    30,212    12,500
</TABLE>
<PAGE>   12

 Item 6.  Exhibits and Reports on Form 8-K
          --------------------------------

          a.  Exhibits

              Exhibit 10.18 - Second Amendment dated as of October 13, 1995 to
              the Term and Revolving Credit Agreement dated as of September 20,
              1994 by and among First Fidelity Bank, National Association and
              ECC International Corp.

              Exhibit 10.19 - Lease between ECC International Corp. and State of
              Wisconsin Investment Board for the premises 2900 Titan Row,
              Orlando, Florida.

              Exhibit 10.20 - Lease between ECC Simulation Limited, ECC
              International Corp. and G.J. King & Son Limited for the premises
              Unit 1 Home Farm Business Centre, Brighton, England.

              Exhibit 10.21 - Lease between ECC Simulation Limited, ECC
              International Corp. and G.J. King & Son Limited for the premises
              Unit 2 Home Farm Business Centre, Brighton, England.

              Exhibit 10.22 - Lease between ECC Simulation Limited, ECC
              International Corp. and G.J. King & Son Limited for the premises
              Unit 3A Home Farm Business Centre, Brighton, England.

              Exhibit 10.23 - ECC International Corp. Executive Savings Plan.


              Exhibit 11 - Schedule of Computation of Earnings Per Share


          b.  Reports on Form 8-K

              None.
<PAGE>   13
                                   SIGNATURES




     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.




                                                   ECC INTERNATIONAL CORP.


Date  February 12, 1996                            /s/ George W. Murphy
      -----------------                            ---------------------------
                                                   George W. Murphy, President
                                                  
                                                  
                                                  
                                                  
                                                  
Date  February 12, 1996                            /s/ Relland Winand
      -----------------                            ---------------------------
                                                   Relland Winand      
                                                   Vice President, Finance

<PAGE>   1

                                                                  EXHIBIT 10.18


                         AMENDMENT TO CREDIT AGREEMENTS

        THIS AMENDMENT ("Amendment") made as of October 13, 1995, between ECC 
INTERNATIONAL CORP. ("ECC"), ECC SIMULATION LIMITED ("Simulation") and FIRST 
FIDELITY BANK, NATIONAL ASSOCIATION ("Bank").


                                   Background

        Bank and ECC entered into a certain Term Loan and Revolving Credit 
Agreement dated as of September 20, 1994 (as amended to date, the "ECC Credit 
Agreement") relative to, inter alia, a Revolver (the "ECC Revolver"), as more 
fully set forth therein, the terms of which are incorporated herein by 
reference. Bank and Simulation entered into a certain Revolving Credit 
Agreement dated as of September 20, 1994 (as amended to date, the "Simulation 
Credit Agreement") relative to a Revolver (the "Simulation Revolver"), as more 
fully set forth therein, the terms of which are incorporated herein by 
reference. The parties desire to amend the ECC Credit Agreement and the 
Simulation Credit Agreement in the manner hereinafter provided.

        NOW, THEREFORE, the parties, INTENDING TO BE LEGALLY BOUND, agree as
follows:

        1.  Maximum Principal Amount of ECC Revolver.  Effective October 13, 
1995 and notwithstanding Section A.2.b. of the ECC Credit Agreement to the 
contrary, the maximum aggregate principal amount of advances, including the 
face amount of Letters of Credit (as defined in the ECC Credit Agreement), to 
be outstanding at any time under the ECC Revolver (the "Maximum Principal 
Amount") shall be an amount which, when taken together with the principal 
amount of cash advances and the face amount of letters of credit outstanding 
under the Simulation Revolver, is not greater than $15,000,000.

        2.  Maximum Principal Amount of Simulation Revolver.  Effective October 
13, 1995 and notwithstanding Section A.1.b. of the Simulation Credit Agreement 
to the contrary, the Maximum Principal Amount (as defined in the Simulation 
Credit Agreement) of advances, including the face amount of letters of credit, 
to be outstanding at any time under the Simulation Revolver shall be an amount 
which is equal to the lesser of (i) $4,000,000 or (ii) an amount which, when 
taken together with the principal amount of cash advances and the face amount 
of letters of credit outstanding under the ECC Revolver, is not greater than
$15,000,000.

        3.  Currency Fluctuations.  Notwithstanding Section A.1.i. of the 
Simulation Credit Agreement to the contrary, if due solely to fluctuations in 
the exchange rate for Dollars and Pounds


        
<PAGE>   2

Sterling, the Equivalent Dollar Amount (as defined in the Simulation Credit 
Agreement) of outstanding cash advances and the face amount of outstanding 
letters of credit made in Pounds Sterling, when taken together with outstanding 
cash advances and the face amount of outstanding letters of credit made in 
Dollars under the Simulation Credit Agreement, exceeds $4,000,000 but does not 
exceed $4,400,000, Simulation need not repay such excess until the Expiration 
Date, provided, that if the same exceeds $4,400,000 or if the Equivalent Dollar 
Amount of outstanding cash advances and the face amount of outstanding letters 
of credit made in Pounds Sterling, when taken together with the sum of
outstanding cash advances and the face amount of outstanding letters of credit
made in Dollars and the principal amount of cash advances and the face amount of
credit outstanding under the ECC Revolver, exceeds $15,000,000, Simulation will
repay the principal of the Simulation Revolver in the amount of such excess
within one (1) Business Day after notice thereof from Bank.

        4.  Simulation Letters of Credit.   Bank agrees that advances under the 
Simulation Revolver may, if requested by Simulation, be in the form of one or 
more letters of credit (each a "Letter of Credit" and, collectively, the 
"Letters of Credit"), subject to the following terms:

                a.  Upon the request of Simulation made to Bank not later than 
ten (10) Business Days prior to the date on which Simulation requests that a 
Letter of Credit be issued hereunder, Bank shall under and subject to the terms 
and conditions hereof issue standby letters of credit under the Revolver for 
the account of Simulation from time to time through but not including the 
Expiration Date, up to an aggregate face amount (the "LC Sublimit") at any time 
outstanding equal to $500,000. letters of Credit issued hereunder shall be 
under such terms, including provisions for draw and expiration date, as shall 
be acceptable to Bank in its discretion, and shall be available only for the 
purpose of securing rental obligations of Simulation for leased locations. 
Letters of Credit shall be denominated in Dollars or Pounds Sterling.

                b.  Bank shall have the right, in its absolute discretion and 
whether or not an Event of Default has occurred or is continuing under the 
Simulation Credit Agreement, to provide the beneficiary of any of the Letters 
of Credit with notice of non-renewal in accordance with the provisions, if any, 
of the Letters of Credit relating thereto.

                c.  Simulation agrees to provide Bank with Cash Collateral 
(meaning for all purposes hereof cash in Dollars) in the following amounts upon 
the following events:


                                       2


<PAGE>   3
                        (1)  On the Expiration Date, Simulation will provide
                             Bank with Cash Collateral in an amount equal to
                             the face amount of all Letters of Credit then
                             outstanding;

                        (2)  If at any time the face amount of Letters of
                             Credit then outstanding exceeds the LC Sublimit,
                             Simulation will at such time provide Bank with
                             Cash Collateral in an amount equal to the
                             aggregate of such excess;

                        (3)  Upon the occurrence of an event of Default,
                             Simulation will provide Bank with Cash Collateral
                             in an amount equal to the aggregate face amount of
                             all outstanding Letters of Credit.

                d.  Cash Collateral provided to Bank pursuant to subparagraph 
c. above shall be held by Bank as security for the prompt satisfaction of all 
of the Liabilities (as defined in the Simulation Credit Agreement), and shall 
be deemed to be "Collateral" for all purposes of the Simulation Credit
Agreement.

                e.  Reimbursement of Letters of Credit Disbursements. 
Simulation agrees to reimburse Bank for the amount of each payment by Bank 
under any Letter of Credit (a "Letter of Credit Disbursement") made by Bank on 
the date (the "Letter of Credit Disbursement Date") on which the Letter of 
Credit Disbursement was made. Such obligation of Simulation to reimburse Bank 
for any such Letter of Credit Disbursement is herein referred to as a 
"Reimbursement Obligation." If any Reimbursement Obligation is not paid in full 
by Simulation to Bank on the corresponding Letter of Credit Disbursement Date 
(for this purpose payments received by Bank after 1:30 p.m., Philadelphia, 
Pennsylvania time on any Business Day shall be deemed to have been made on the 
next succeeding Business Day), the unpaid amount of such Reimbursement 
Obligation shall bear interest for each day from the corresponding Letter of 
Credit Disbursement Date until payment in full thereof (after, as well as 
before, judgment), payable on demand, at the Default Rate (as defined in the 
Revolving Credit Note to be executed pursuant to Section 6.b. hereof).

                f.  Letter of Credit Charges and Fees.  Simulation agrees to 
pay on demand to Bank, with respect to the amendment or transfer of any Letter 
of Credit and each drawing made under any Letter of Credit, documentary and 
processing fees and charges in accordance with Bank's fees and charges in 
effect at the time of such amendment, transfer or drawing, as the case may be. 
Also, a letter of credit fee will be payable by Simulation in the amount of 1% 
of the face amount of each Letter of Credit, payable upon issuance thereof and 
on each anniversary thereof.

                                       3



<PAGE>   4
                g.  Obligations Absolute.  All Reimbursement Obligations of 
Simulation arising from Letter of Credit Disbursements shall be unconditional 
and absolute and shall be paid strictly in accordance with the terms of this 
Agreement under all circumstances whatsoever including, without limitation, the 
following circumstances: (i) any lack of validity or enforceability of any 
Letter of Credit; (ii) the existence of any claim, set-off, defense or other 
right which Simulation may have at any time against any beneficiary or any 
transferee of any Letter of Credit (or any person for whom any such beneficiary 
or transferee may be acting), or any other person, whether in connection with 
the Simulation Credit Agreement, the transactions contemplated therein or any 
unrelated transaction (including any underlying transaction between Simulation 
or any of its subsidiaries or affiliates and the beneficiary for which any 
Letter of Credit was procured); (iii) any draft, demand, certificate or any 
other document presented under any Letter of Credit proving to be forged, 
fraudulent, invalid or insufficient in any respect or any statement therein 
being untrue or inaccurate in any respect, except to the extent Simulation 
proves that such payment constituted negligence or willful misconduct on the 
part of Bank; or (iv) payment by Bank under any Letter of Credit against 
presentation of a demand, draft, certificate or other document which does not 
comply with the terms of the Letter of Credit, except to the extent that 
Simulation proves that such payment constituted negligence or willful 
misconduct on the part of Bank; (v) the failure or delay on the part of Bank in 
giving any notice hereunder; (vi) any draw thereunder being a consequence of 
Bank's non-renewal of any Letter of Credit; or (vii) any other circumstance or 
happening whatsoever, whether similar or dissimilar to any of the foregoing.

                h.  Indemnification; Nature of Duties.

                        (1)  In addition to amounts payable as elsewhere
                             provided in the Simulation Credit Agreement and/or
                             in this Amendment, Simulation hereby indemnifies
                             and holds harmless Bank from and against any and
                             all claims, damages, losses, liabilities, costs or
                             expenses whatsoever which Bank may incur (or which
                             may be claimed against Bank by any person) by
                             reason of or in connection with the issuance or
                             transfer of, or payment or failure to pay under,
                             any Letter of Credit, or the involvement by Bank in
                             any suit, proceeding or action as a consequence,
                             direct or indirect, of Bank's issuance of any
                             Letter of Credit, except for any such claims,
                             damages, losses, liabilities, costs or expenses to
                             the extent, but only to the extent, which 
                             Simulation proves were caused by the gross 
                             negligence or 

                
                                    4
<PAGE>   5

                             willful misconduct of Bank in determining whether
                             a certificate, draft, statement or document 
                             presented under any Letter of Credit complied with 
                             the terms of the Letter of Credit.

                        (2)  As between Simulation and Bank, Simulation assumes
                             all risks of the act or omissions of the
                             beneficiary or any transferee of any Letter of
                             Credit with respect to such beneficiary's or
                             transferee's use of the Letter of Credit. Bank
                             shall not be liable or responsible for: (A) the use
                             which may be made of any Letter of Credit or the
                             proceeds of any drawing thereunder or for any
                             acts or omissions of the beneficiary or any
                             transferee in connection therewith; (B) the
                             validity, sufficiency or genuineness of
                             certificates, drafts or documents presented under
                             any Letter of Credit that appear on their face to
                             be in order, or of any endorsement thereon, even if
                             any of the same should in fact prove to be in any
                             or all respects invalid, insufficient, fraudulent
                             or forged; (C) payment by Bank under any Letter of
                             Credit against presentation of drafts, certificates
                             or documents which do not comply with the terms of
                             the Letter of Credit, including failure of any such
                             drafts, certificates or documents to bear any
                             reference or adequate reference to the Letter of
                             Credit, or for any failure of the beneficiary of
                             any Letter of Credit otherwise to comply fully with
                             the conditions required in order to draw under the
                             Letter of Credit; (D) the validity or sufficiency
                             of any instrument transferring or assigning or
                             purporting to transfer or assign any Letter of
                             Credit or the rights or benefits thereunder or the
                             proceeds thereof, in whole or in part, which may
                             prove to be invalid or ineffective for any reason;
                             or (E) any other circumstances whatsoever in making
                             or failing to make payment under any Letter of
                             Credit, except only that Bank shall be liable to
                             Simulation to the extent, but only to the extent, 
                             of any direct, as opposed to consequential, damages
                             suffered by Simulation which Simulation proves were
                             caused by Bank's gross negligence or willful 
                             misconduct in connection with the matters referred 
                             to in clauses (B) through (E) above. In


                                       5

<PAGE>   6
                             furtherance and not in limitation of the foregoing,
                             Bank may accept drafts, certificates or documents
                             presented to it under any Letter of Credit that
                             appear on their face to be in order, without 
                             responsibility for further investigation,
                             regardless of any notice or information to the
                             contrary, and any action taken or omitted by Bank
                             under or in connection with any Letter of Credit,
                             if taken or omitted in good faith and without 
                             willful misconduct or gross negligence, shall not
                             put Bank to any resulting liability to Simulation.

                i.  Payments to Bank.  All payments to be made by Simulation to 
Bank in respect of Reimbursement Obligations due from Simulation shall be 
payable in Dollars on the day when due without presentment, demand, protest or 
notice of any kind, all of which are hereby expressly waived, and an action 
therefor shall immediately accrue.

                j.  Application.  Simulation shall, as a condition to the 
issuance by Bank of any Letter of Credit, execute and deliver to Bank Bank's 
then standard Letter of Credit Application as Bank may require in connection 
with the issuance of a Letter of Credit, provided, that in the event of any 
express inconsistency between the terms of any such Application and the terms 
hereof, the latter shall control.

        5.  Commitment Fee.  Effective October 1, 1995, and in lieu of the
Commitment Fee payable by ECC under Section F.2. of the ECC Credit Agreement,
ECC shall pay to Bank an unused commitment fee in the amount of 1/4 of 1% of
the average unused portion of Bank's aggregate commitment under the ECC 
Revolver and the Simulation Revolver, determined quarterly and payable in 
arrears at the end of each such quarterly period.

        6.  Conditions.  The obligation of Bank to increase the Maximum 
Principal Amount of the Revolvers as set forth in Sections 1 and 2 hereof is 
subject to the following conditions precedent:

                a.  ECC shall, concurrently herewith, execute and deliver to 
Bank an amended and restated Revolving Credit Note in the face amount of 
$15,000,000, which amended and restated Revolving Credit Note, together with 
any attachments thereto and amendments, modifications or restatements thereof 
or thereto, shall constitute the "Revolving Credit Note" for all purposes of 
the ECC Credit Agreement and other Loan Documents referred to therein;


                                    6
<PAGE>   7
                b. Simulation shall, concurrently herewith, execute and deliver 
to Bank an amended and restated Revolving Credit Note in the face amount of 
$4,000,000, which amended and restated Revolving Credit Note, together with any 
attachments thereto and amendments, modifications or restatements thereof or 
thereto, shall constitute the "Revolving Credit Note" for all purposes of the 
Simulation Credit Agreement and other Loan Documents referred to therein;

                c. Each of ECC and Simulation shall, concurrently herewith, 
deliver to Bank certified resolutions of its Board of Directors authorizing ECC 
and Simulation, as applicable, to execute, deliver and perform this Amendment 
and any documents required to be executed by it in connection herewith.

        7. Reaffirmation. Except as specifically modified by this Amendment, 
the ECC Credit Agreement and the Simulation Credit Agreement and all other Loan 
Documents referred to in either thereof shall remain unchanged and in full 
force and effect, and this Amendment shall be construed as supplemental 
thereto, and each of ECC and Simulation hereby reaffirms all of its Liabilities 
thereunder and agrees that the same are owing to Bank in accordance with the 
terms thereof without off-set, counterclaim or defense of any nature. Each of 
ECC and Simulation further reaffirms all guaranties, liens and security 
interests heretofore granted by it to Bank pursuant to the Loan Documents, 
including without limitation the liens, security interests and guaranties 
granted pursuant to the Security Agreement dated September 20, 1994 among Bank, 
ECC, ECC International, Inc. and Educational Computer Corporation International 
("Security Agreement"), that certain Guarantee and Debenture dated September 
20, 1994 executed and delivered by Simulation to Bank ("Guaranty and 
Debenture") and that certain Guaranty and Surety Agreement dated September 20, 
1994 from ECC, ECC International, Inc. and Educational Computer Corporation to 
Bank ("Guaranty"); and agrees that the ECC Revolver and the Simulation 
Revolver, as the Maximum Principal Amount of each thereof is amended pursuant 
to Sections 1 and 2 hereof, and all Reimbursement Obligations of Simulation, 
constitute a "Liability" for all purposes of said Security Agreement, a 
"Secured Liability" for all purposes of said Guaranty and Debenture and a 
"Liability" for all purposes of said Guaranty.

                                       7

<PAGE>   8


                IN WITNESS WHEREOF, the parties have executed this Amendment as 
of the date first above written.

                                        ECC INTERNATIONAL CORP.


                                        By:  /s/  G. W. Murphy, CEO
                                            -----------------------------------
                                            Name:  George W. Murphy
                                            Title: President/CEO

                                    Attest:  /s/  Richard F. Thompson
                                            -----------------------------------
                                            Name:  Richard F. Thompson
                                            Title:  Secretary/Treasurer



                                        ECC SIMULATION LIMITED


                                        By:  /s/  G. W. Murphy, Director
                                            -----------------------------------
                                            Name:  George W. Murphy
                                            Title:  Director

                                    Attest:  /s/  Richard F. Thompson
                                            -----------------------------------
                                            Name:  Richard F. Thompson
                                            Title:  Secretary/Treasurer



                                        FIRST FIDELITY BANK,
                                        NATIONAL ASSOCIATION


                                        By:  /s/  Jack P. Albaugh
                                            ----------------------------------
                                            Name:  Jack P. Albaugh
                                            Title:  Vice President



                                     8
<PAGE>   9
                                JOINDER


        Each of the undersigned consents to the foregoing Amendment, the terms 
of which are incorporated herein by reference, and agrees with Bank that the 
Revolver for ECC International Corp. and the Revolver for ECC Simulation 
Limited, as the Maximum Principal Amount of each thereof is amended pursuant to
Sections 1 and 2 of the within Amendment, and all Reimbursement Obligations of 
Simulation for letters of credit, constitute a "Liability" for all purposes of 
(A) that certain Guaranty and Surety Agreement dated September 20, 1994 
executed and delivered by Educational Computer Corporation International and 
ECC International, Inc. to Bank, (B) that certain Guaranty and Surety Agreement 
dated September 20, 1994 executed and delivered by Educational Computer 
Corporation International, ECC International, Inc. and ECC International Corp. 
to Bank, and (C) that certain General Security Agreement dated September 20, 
1994 among Bank, ECC International Corp., Educational Computer Corporation 
International and ECC International, Inc.

        IN WITNESS WHEREOF, the undersigned have executed this Joinder this
13th day of October, 1995.


                                        ECC INTERNATIONAL, INC.


                                        By:  /s/  G. W. Murphy, CEO
                                            -----------------------------------
                                            Name:  George W. Murphy
                                            Title: President/CEO


                                        EDUCATIONAL COMPUTER CORPORATION
                                        INTERNATIONAL

                                        By:  /s/  G. W. Murphy, Director
                                            -----------------------------------
                                            Name:  George W. Murphy
                                            Title:  Director


                                     9

<PAGE>   10
                                                      REVOLVING CREDIT NOTE
                                                   Obligation No.______________

                                                               October 13, 1995
                                                     Philadelphia, Pennsylvania

$15,000,000

FOR VALUE RECEIVED, and intending to be legally bound hereby, the undersigned 
Borrower, ECC International Corp., unconditionally promises to pay to the order 
of FIRST FIDELITY BANK, NATIONAL ASSOCIATION (the "Bank"), the principal amount 
of all advances that are now or may hereafter be made hereunder and that are 
then outstanding, together with accrued, unpaid interest thereon and any unpaid 
costs and expenses payable hereunder, on September 19, 1997.

A.  Terms of Note.

    1. Interest Payments. Interest on the principal balance hereof shall, 
       except as provided in subpart A.B. below, accrue at such rates and be
       payable in accordance with Section A.2. of that certain Term Loan and
       Revolving Credit Agreement dated September 20, 1994 between the Bank and
       the Borrower, as amended to date, including by Amendment of even date
       herewith (together with any exhibits thereto and amendments and
       modifications thereto in effect from time to time, the "Loan Agreement").

    2. Computation of Interest. Interest hereunder shall be computed daily on 
       the basis of a year of 360 days for the actual number of days elapsed.
       All payments hereunder shall be made in lawful currency of the United
       States of America and in immediately available funds at the Bank's
       address set forth in the Loan Agreement or at such other address as the
       Bank shall notify the Borrower of in writing.

    3. Incorporation by Reference. This Note is the Revolving Credit Note 
       referred to in the Loan Agreement and is subject to the terms and
       conditions thereof, which terms and conditions are incorporated herein,
       including, without limitation, terms pertaining to definitions,
       representations, warranties, covenants, events of default and remedies.
       Any capitalized term used herein without definition shall have the
       definition contained in the Loan Agreement.

    4. Borrowing Requests; Crediting of Account. Any request for borrowing 
       pursuant to this Note shall be made by the Borrower in writing in the
       form of a "Notice of Borrowing Under Revolving Credit" attached hereto as
       Exhibit A and in accordance with the terms of the Loan Agreement. Unless
       otherwise requested by the Borrower in writing at least one (1) Business
       Day prior to the date of a requested advance, each advance hereunder
       shall be made by crediting the Account as defined in the Loan Agreement
       with the amount of the advance. All advances made by crediting the
       Account or any other account of the Borrower at the Bank shall be
       conclusively presumed to have been properly authorized by the Borrower.

    5. Bank Records of Advance. The Bank may enter in its business records the 
       date and the amount of each advance, each conversion from one interest
       rate basis to another and each payment made pursuant to this Note and the
       Loan Agreement. The Bank's records of such advance, conversion or payment
       shall, in the absence of manifest error, be conclusively binding upon the
       Borrower. In the event the Bank gives notice or renders a statement by
       mailing such notice or statement to the Borrower, concerning any such
       advance, conversion or payment, or the amount of principal and interest
       due on this Note, the Borrower agrees that, unless the Bank receives a
       written notification of exceptions to this statement within forty-five
       (45) calendar days after such statement or notice is mailed, the
       statement or notice shall be an account stated, correct and acceptable
       and binding upon the Borrower.

    6. Advance Requests Exceeding Maximum Principal Amount. The Borrower shall 
       not request the Bank to make any advances under this Note or the Loan
       Agreement which exceeds the Maximum Principal Amount set forth in Section
       A.2.b. of the Loan Agreement. In the event that the principal balance
       outstanding under this Note exceeds at any time the Maximum Principal
       Amount, the Borrower shall immediately, and without demand from the Bank,
       pay to the Bank the amount in excess thereof, and the Borrower agrees
       that until such excess is paid to the Bank, this Note shall evidence and
       be enforceable with respect to any and all amounts outstanding hereunder
       including such excess.

<PAGE>   11
    7. Application of Payments. All payments received on this Note shall be 
       applied first to the Bank's fees, costs and expenses which the Borrower
       is obligated to pay pursuant to the terms hereof and under any other 
       Loan Document, then to accrued and unpaid interest and then to principal 
       or such payments may be applied in such other order as the Bank in its 
       sole discretion shall determine.

    8. Default Rate. At the Bank's option, interest will be assessed on any
       principal which remains unpaid at the maturity of this Note, whether by
       acceleration or otherwise, or upon and following any Event of Default, at
       a rate which is four percent (4%) higher than the rate otherwise charged
       hereunder (the "Default Rate") provided that at no time shall the Default
       Rate exceed the highest rate of interest allowed by law. Such Default 
       Rate of interest shall also be charged on the amounts owed by the 
       Borrower to the Bank pursuant to any judgments entered in favor of Bank
       in respect of this Note or any other Loan Document.

    9. Prepayment. Prepayment of principal may be made subject to payment of 
       all amounts required to be paid in connection with such prepayment as
       provided in the Loan Agreement.

B.  Remedies.

    1. Generally. Upon and following an Event of Default, the Bank, at its 
       option, may exercise any and all rights and remedies it has under this
       Note, the Loan Agreement and/or the other Loan Documents and under
       applicable law, including, without limitation, the right to charge and 
       collect interest on the principal portion of the amounts outstanding 
       hereunder at the Default Rate. Upon and following an Event of Default,
       the Bank may proceed to protect and enforce the Bank's rights under any
       Loan Document and/or under applicable law by action at law, in equity, 
       or other appropriate proceeding, including, without limitation, an 
       action for specific performance to enforce or aid in the enforcement of 
       any provision contained herein or in any other Loan Document.

    2. Remedies Cumulative; No Waiver. The remedies hereunder and under the
       other Loan Documents are cumulative and concurrent, and are not 
       exclusive of any other remedies available to the Bank. No failure or
       delay on the part of the Bank in the exercise of any right, power,
       remedy or privilege shall operate as a waiver thereof, nor shall any
       single or partial exercise of any right, power, remedy or privilege
       preclude any other or further exercise thereof, or the exercise of any
       other right, power, remedy or privilege.

C.  Miscellaneous.

    1. Governing Law. This Note shall be construed in accordance with and 
       governed by the substantive laws of the Commonwealth of Pennsylvania 
       without reference to conflict of laws principles.

    2. Integration. This Note and the other Loan Documents constitute the sole
       agreement of the parties with respect to the subject matter hereof and
       thereof and supersede all oral negotiations and prior writings with
       respect to the subject matter hereof and thereof.

    3. Amendment; Waiver. No amendment of this Note, and no waiver of any one 
       or more of the provisions hereof shall be effective unless set forth in 
       writing and signed by the parties hereto.

    4. Successors and Assigns. This Note (i) shall be binding upon the Borrower 
       and the Bank and their respective successors and permitted assigns, and 
       (ii) shall inure to the benefit of the Borrower and the Bank and their 
       respective successors and permitted assigns; provided, however, that the 
       Borrower may not assign its rights or obligations hereunder or any 
       interest herein without the prior written consent of the Bank, and any 
       such assignment or attempted assignment by the Borrower shall be void and
       of no effect with respect to the Bank.

    5. Severability. The illegality or unenforceability of any provision of 
       this Note or any instrument or agreement required hereunder shall not in 
       any way affect or impair the legality or enforceability of the remaining 
       provisions of this Note or any instrument or agreement required 
       hereunder. In lieu of any illegal or unenforceable provision in this 
       Note, there shall be added automatically as part of this Note a legal 
       and enforceable provision as similar in terms to such illegal or 
       unenforceable provision as may be possible.

    6. Inconsistencies. The Loan Documents are intended to be consistent. 
       However, in the event of any inconsistencies among any of the Loan 
       Documents, such inconsistency shall not affect the validity or 
       enforceability of each Loan Document. The Borrower agrees that in the 
       event of any inconsistency or 


                                      -2-

<PAGE>   12
       ambiguity in any of the Loan Documents, the Loan Documents shall not be 
       construed against any one party but shall be interpreted consistent with 
       the Bank's policies and procedures.

    7. Headings. The headings of sections and paragraphs have been included 
       herein for convenience only and shall not be considered in interpreting 
       this Note.

    8. Schedules. If a Schedule and/or an Exhibit is attached hereto, the 
       provisions thereof are incorporated herein.

    9. Judicial Proceeding; Waivers.

       a. THE BORROWER AGREES THAT ANY SUIT, ACTION OR PROCEEDING, WHETHER 
          CLAIM OR COUNTERCLAIM, BROUGHT OR INSTITUTED BY THE BANK OR THE 
          BORROWER OR ANY SUCCESSOR OR ASSIGN OF THE BANK OR THE BORROWER, ON
          OR WITH RESPECT TO THIS NOTE OR ANY OTHER LOAN DOCUMENT OR THE
          DEALINGS OF THE PARTIES WITH RESPECT HERETO, OR THERETO, SHALL BE 
          TRIED ONLY BY A COURT AND NOT BY A JURY.

       b. THE BANK AND THE BORROWER EACH HEREBY KNOWINGLY, VOLUNTARILY AND
          INTENTIONALLY WAIVE ANY RIGHT TO A TRIAL BY JURY IN ANY SUCH SUIT,
          ACTION OR PROCEEDING. FURTHER, THE BORROWER WAIVES ANY RIGHT IT MAY 
          HAVE TO CLAIM OR RECOVER, IN ANY SUCH SUIT, ACTION OR PROCEEDING, ANY
          SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
          OTHER THAN, OR IN ADDITION TO, ACTUAL DAMAGES.

       c. THE BORROWER ACKNOWLEDGES AND AGREES THAT THIS SECTION IS A SPECIFIC 
          AND MATERIAL ASPECT OF THIS NOTE AND THAT THE BANK WOULD NOT EXTEND 
          CREDIT TO THE BORROWER IF THE WAIVERS SET FORTH IN THIS SECTION WERE 
          NOT A PART OF THIS NOTE.

IN WITNESS WHEREOF, the Borrower has duly executed and delivered to the Bank 
this Note as of the date first above written.

ATTEST:                                 ECC INTERNATIONAL CORP.


By:  /s/  Richard F. Thompson               /s/  G. W. Murphy
     ----------------------------           -----------------------------------
     Name:  Richard F. Thompson             Name:  George W. Murphy
     Title: Secretary/Treasurer             Title: President/CEO

                                                  Address:  175 Stafford Avenue
                                                            Wayne, PA 19087
                                                  Telecopier No. (610) 254-9268


                                      -3-
<PAGE>   13
                                                      REVOLVING CREDIT NOTE
                                                   Obligation No.______________

                                                               October 13, 1995
                                                     Philadelphia, Pennsylvania

$4,000,000

FOR VALUE RECEIVED, and intending to be legally bound hereby, the undersigned 
Borrower, ECC SIMULATION LIMITED, unconditionally promises to pay to the order 
of FIRST FIDELITY BANK, NATIONAL ASSOCIATION (the "Bank"), the principal amount 
of all advances that are now or may hereafter be made hereunder and that are 
then outstanding, together with accrued, unpaid interest thereon and any unpaid 
costs and expenses payable hereunder, on September 19, 1997.

A.  Terms of Note.

    1.  Interest Payments. Interest on the principal balance hereof shall, 
        except as provided in subpart A.B. below, accrue at such rates and be
        payable in accordance with Section A.1. of that certain Revolving Credit
        Agreement dated September 20, 1994 between the Bank and the Borrower, as
        amended to date, including by Amendment (the "Amendment") of even date
        herewith (together with any exhibits thereto and amendments and
        modifications thereto in effect from time to time, the "Loan
        Agreement").

    2.  Computation of Interest. Interest hereunder shall be computed daily in 
        accordance with the Loan Agreement. All payments hereunder shall be made
        in lawful currency of the United States of America or in pounds
        sterling, as set forth in the Loan Agreement, and in immediately
        available funds at the Bank's address set forth in the Loan Agreement or
        at such other address as the Bank shall notify the Borrower of in
        writing.

    3.  Incorporation by Reference. This Note is the Revolving Credit Note 
        referred to in the Loan Agreement and is subject to the terms and
        conditions thereof, which terms and conditions are incorporated herein,
        including, without limitation, terms pertaining to definitions,
        representations, warranties, covenants, events of default and remedies.
        Any capitalized term used herein without definition shall have the
        definition contained in the Loan Agreement.

    4.  Borrowing Requests; Crediting of Account. Any request for borrowing 
        pursuant to this Note shall be made by the Borrower in writing in the
        form of a "Notice of Borrowing Under Revolving Credit" attached hereto
        as Exhibit A and in accordance with the terms of the Loan Agreement.
        Unless otherwise requested by the Borrower in writing at least five (5)
        Business Days prior to the date of a requested advance, each advance
        hereunder shall be made by crediting the Account as defined in the Loan
        Agreement with the amount of the advance. All advances made by crediting
        the Account or any other account of the Borrower at the Bank shall be
        conclusively presumed to have been properly authorized by the Borrower.

    5.  Bank Records of Advance. The Bank may enter in its business records the 
        date and the amount of each advance, each conversion from one interest
        rate basis to another and each payment made pursuant to this Note and
        the Loan Agreement. The Bank's records of such advance, conversion or
        payment shall, in the absence of manifest error, be conclusively binding
        upon the Borrower. In the event the Bank gives notice or renders a
        statement by mailing such notice or statement to the Borrower,
        concerning any such advance, conversion or payment, or the amount of
        principal and interest due on this Note, the Borrower agrees that,
        unless the Bank receives a written notification of exceptions to this
        statement within forty-five (45) calendar days after such statement or
        notice is mailed, the statement or notice shall be an account stated,
        correct and acceptable and binding upon the Borrower.

    6.  Advance Requests Exceeding Maximum Principal Amount. The Borrower shall 
        not request the Bank to make any advances under this Note or the Loan
        Agreement which exceeds the Maximum Principal Amount set forth in
        Section A.1.b. of the Loan Agreement. In the event that the principal
        balance outstanding under this Note exceeds at any time the Maximum
        Principal Amount, the Borrower shall, subject to the terms of the
        Amendment, immediately, and without demand from the Bank, pay to the
        Bank the amount in excess thereof, and the Borrower agrees that until
        such excess is paid to the Bank, this Note shall evidence and be
        enforceable with respect to any and all amounts outstanding hereunder
        including such excess.
 
    7.  Application of Payments. All payments received on this Note shall be 
        applied first to the Bank's fees, costs and expenses which the Borrower
        is obligated to pay pursuant to the terms hereof and under any other
        Loan Document, then to accrued and unpaid interest and then to principal
        or such payments may be applied in such other order as the Bank in its
        sole discretion shall determine.

    8.  Default Rate. At the Bank's option, interest will be assessed on any 
        principal which remains unpaid at the maturity of this Note, whether by
        acceleration or otherwise, or upon and following any Event of Default,
        at a rate which is four percent (4%) higher than the rate otherwise
        charged hereunder (the "Default Rate") provided that at no time shall
        the Default Rate


<PAGE>   14
                exceed the highest rate of interest allowed by law. Such
                Default Rate of interest shall also be charged on the amounts
                owed by the Borrower to the Bank pursuant to any judgments
                entered in favor of Bank in respect of this Note or any other
                Loan Document.

        9.      Prepayment. Prepayment of principal may be made subject to 
                payment of all amounts required to be paid in connection with 
                such prepayment as provided in the Loan Agreement.

B.      Remedies.

        1.      Generally. Upon and following an Event of Default, the Bank, at
                its option, may exercise any and all rights and remedies it has
                under this Note, the Loan Agreement and/or the other Loan
                Documents and under applicable law, including, without
                limitation, the right to charge and collect interest on the
                principal portion of the amounts outstanding hereunder at the
                Default Rate. Upon and following an Event of Default, the Bank
                may proceed to protect and enforce the Bank's rights under any
                Loan Document and/or under applicable law by action at law, in
                equity, or other appropriate proceeding, including, without
                limitation, an action for specific performance to enforce or
                aid in the enforcement of any provision contained herein or in
                any other Loan Document.

        2.      Remedies Cumulative; No Waiver. The remedies hereunder and under
                the other Loan Documents are cumulative and concurrent, and are
                not exclusive of any other remedies available to the Bank. No
                failure or delay on the part of the Bank in the exercise of any
                right, power, remedy or privilege shall operate as a waiver
                thereof, nor shall any single or partial exercise of any right,
                power, remedy or privilege preclude any other or further
                exercise thereof, or the exercise of any other right, power,
                remedy or privilege.

C.      Miscellaneous.

        1.      Governing Law. This Note shall be construed in accordance with
                and governed by the substantive laws of the Commonwealth of
                Pennsylvania without reference to conflict of laws principles.

        2.      Integration. This Note and the other Loan Documents constitute
                the sole agreement of the parties with respect to the subject
                matter hereof and thereof and supersede all oral negotiations
                and prior writings with respect to the subject matter hereof and
                thereof.

        3.      Amendment; Waiver. No amendment of this Note, and no waiver of
                any one or more of the provisions hereof shall be effective
                unless set forth in writing and signed by the parties hereto.

        4.      Successors and Assigns. This Note (i) shall be binding upon the
                Borrower and the Bank and their respective successors and
                permitted assigns, and (ii) shall inure to the benefit of the
                Borrower and the Bank and their respective successors and
                permitted assigns; provided, however, that the Borrower may not
                assign its rights or obligations hereunder or any interest
                herein without the prior written consent of the Bank, and any
                such assignment or attempted assignment by the Borrower shall be
                void and of no effect with respect to the Bank.

        5.      Severability. The illegality or unenforceability of any
                provision of this Note or any instrument or agreement required
                hereunder shall not in any way affect or impair the legality or
                enforceability of the remaining provisions of this Note or any
                instrument or agreement required hereunder. In lieu of any
                illegal or unenforceable provision in this Note, there shall be
                added automatically as part of this Note a legal and enforceable
                provision as similar in terms to such illegal or unenforceable
                provision as may be possible.

        6.      Inconsistencies. The Loan Documents are intended to be
                consistent. However, in the event of any inconsistencies among
                any of the Loan Documents, such inconsistency shall not affect
                the validity or enforceability of each Loan Document. The
                Borrower agrees that in the event of any inconsistency or
                ambiguity in any of the Loan Documents, the Loan Documents shall
                not be construed against any one party but shall be interpreted
                consistent with the Bank's policies and procedures.

        7.      Headings. The headings of sections and paragraphs have been
                included herein for convenience only and shall not be considered
                in interpreting this Note.

        8.      Schedules. If a Schedule and/or an Exhibit is attached hereto,
                the provisions thereof are incorporated herein.

        9.      Judicial Proceeding; Waivers.

                a.      THE BORROWER AGREES THAT ANY SUIT, ACTION OR PROCEEDING,
                        WHETHER CLAIM OR COUNTERCLAIM, BROUGHT OR INSTITUTED BY
                        THE BANK OR THE BORROWER OR ANY SUCCESSOR OR ASSIGN OF
                        THE BANK OR THE BORROWER, ON OR WITH RESPECT TO THIS
                        NOTE OR ANY OTHER LOAN DOCUMENT OR THE DEALINGS OF THE
                        PARTIES WITH RESPECT HERETO, OR THERETO, SHALL BE TRIED
                        ONLY BY A COURT AND NOT BY A JURY.

                                      -2-

<PAGE>   15
    b.  THE BANK AND THE BORROWER EACH HEREBY KNOWINGLY, VOLUNTARILY AND 
        INTENTIONALLY WAIVE ANY RIGHT TO A TRIAL BY JURY IN ANY SUCH SUIT, 
        ACTION OR PROCEEDING. FURTHER, THE BORROWER WAIVES ANY RIGHT IT MAY 
        HAVE TO CLAIM OR RECOVER, IN ANY SUCH SUIT, ACTION OR PROCEEDING, ANY 
        SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
        OTHER THAN, OR IN ADDITION TO, ACTUAL DAMAGES.

    c.  THE BORROWER ACKNOWLEDGES AND AGREES THAT THIS SECTION IS A SPECIFIC 
        AND MATERIAL ASPECT OF THIS NOTE AND THAT THE BANK WOULD NOT EXTEND 
        CREDIT TO THE BORROWER IF THE WAIVERS SET FORTH IN THIS SECTION WERE 
        NOT A PART OF THIS NOTE.

IN WITNESS WHEREOF, the Borrower has duly executed and delivered to the Bank 
this Note as of the date first above written.


ATTEST:                                 ECC SIMULATION LIMITED  


/s/  Richard F. Thompson                By:  /s/  G.W. Murphy, Director
- ----------------------------                 -----------------------------------
Name:  Richard F. Thompson                   Name:  George W. Murphy
Title: Secretary/Treasurer                   Title: Director     

                                                  Address:  175 Strafford Avenue
                                                            Wayne, PA 19087

                                                  Telecopier No. (215) 254-9268


                                      -3-

<PAGE>   1
                                                            EXHIBIT 10.19

                                       Approximately 72,520 Rentable Square Feet
                                       2900 Titan Row, Suite 142
                                       Orlando, Florida  32809


                                     LEASE

        THIS LEASE dated as of January 26th, 1993, by and between STATE OF 
WISCONSIN INVESTMENT BOARD ("Landlord"), and ECC INTERNATIONAL CORP., a 
Delaware Corporation (hereinafter referred to as "Tenant").

                                  WITNESSETH:

        1.      Premises and Term.  In consideration of the obligation of 
Tenant to pay rent as herein provided, and in consideration of the other terms, 
provisions and covenants hereof, Landlord hereby demises and leases to Tenant, 
and Tenant hereby leases from Landlord certain premises (the "Premises") as 
shown on Exhibit A hereto, which Premises are part of a building (the 
"Building") commonly known as Orlando Central Park VIII, and which Building is 
situated within the County of Orange, State of Florida, on the land described 
on Exhibit B hereto and incorporated herein by reference (the "Land") (the 
Land, Building and all other improvements located on the Land, together with 
all easements and appurtenances belonging thereto, are hereinafter collectively 
referred to as the "Property").

        TO HAVE AND TO HOLD the same for a term (the "Lease Term") 
commencing on the Commencement Date, as hereinafter defined, and ending on the 
date that is seven (7) years and zero (0) months thereafter (the "Termination 
Date"), provided, however, that, in the event the Commencement Date is a date 
other than the first day of a calendar month, said term shall extend for said 
number of years and months in addition to the remainder of the calendar month 
following the Commencement Date and the Termination Date shall be adjusted 
accordingly.

        The Commencement Date shall be ninety (90) days from the date that the 
Lease has been fully executed, regardless of the completion of the Landlord's 
Work as defined in Exhibit "C" and whether or not a Certificate of Occupancy 
has been issued.


                                       1
<PAGE>   2
        (a)     Notwithstanding the foregoing, Tenant shall have the one-time 
right to terminate this Lease as of the last day of the sixtieth (60th) month 
of the Lease Term by providing written notice of termination to Landlord no 
later than the last day of the fifty-fourth (54th) month of the Lease Term, 
subject to the following conditions precedent:

        (i)     Tenant shall not then be in default hereunder, and no default 
                shall occur thereafter.

        (ii)    Tenant shall not have theretofore assigned its Interest 
                hereunder nor sublet all or any portion of the Premises.

        (iii)   Tenant pays to Landlord, on or before the last day of the 
                fifty-fourth (54th) month of the Lease Term, the total amount 
                of the remaining unamortized value of the Landlord's 
                Contribution (as hereinafter defined), all leasing commissions
                paid by Landlord in connection with the execution of this 
                Lease and seven (7) months' rent (i.e., $263,778.00) and all 
                other amounts due from Tenant until the end of the sixtieth 
                (60th) month.

        (b)     Tenant has permission to enter upon the Premises during the 
period prior to the Commencement Date, such entry shall be in accordance with 
(i) all the terms, covenants and conditions of the Lease, except the covenant 
to pay Base Rental, and (ii) such other terms and conditions that Landlord may 
require in connection with such entry.

        2.      Base Rent and Security Deposit.

        (a)     Tenant shall pay to Landlord throughout the Lease Term a base 
annual rental of TWO HUNDRED FORTY-SIX THOUSAND FIVE HUNDRED SIXTY-FOUR AND 
NO/100 DOLLARS ($246,564.00) per year plus any and all sales, use, transaction, 
or comparable taxes applicable thereto.  Said base annual rental (the "Base 
Rental") shall be subject to adjustment as hereinafter provided in this Lease. 
Any and all Base Rental, together with all taxes thereon, shall be due and 
payable in advance on or before the first day of January of each year during 
the Lease Term; provided, however, the Base Rental for the calendar year in 
which this Lease is executed shall be payable in advance on or before the 
Commencement Date of the Lease Term.  It is expressly provided, however, that 
so long as Tenant shall not be in default of its obligations under this Lease, 
such Base Rental and the taxes thereon shall, for the convenience of Tenant, be 
payable in equal monthly installments in advance, on or before the first day of 
each calendar month during the Lease Term.  The initial monthly installment 
shall be due and payable on the date of Tenant's execution hereof.  However, 
upon a default by Tenant of any of its obligations hereunder, the Base Rental 
for the balance of the then current calendar year of the Lease Term, together 
with the aggregate of the Base Rental for the remainder of the calender years 
of the Lease Term as provided herein below, shall be immediately due and 
payable.  If this Lease commences on a day other than the


                                    2
<PAGE>   3
first day of the calendar month or ends on a day other than the last day of a 
calendar month, the monthly rental for the fractional month shall be 
appropriately prorated.  Any sum payable hereunder other than Base Rental 
(sometimes referred to herein as "Additional Rent") shall, unless otherwise 
stated, be due on demand.  Tenant shall pay Base Rental and Additional Rent 
promptly when due without notice or demand therefor and without abatement, 
deduction or set-off for any reason whatever.

        (b)     No payment by Tenant or receipt or acceptance by Landlord of a 
lesser amount than the correct Base Rental or Additional Rent shall be deemed 
to be other than a payment on account, nor shall any endorsement or statement 
on any check or any letter accompanying any check or payment be deemed an 
accord and satisfaction, and Landlord may accept such check or payment without 
prejudice to Landlord's right to recover the balance or pursue any other remedy 
provided in this lease or at law.

        (c)     Tenant recognizes that late payment of any rent or other sum 
due hereunder from Tenant to Landlord will result in administrative expense to 
Landlord, the extent of which additional expense is extremely difficult and 
economically impractical to ascertain.  Tenant therefor agrees that if rent or 
any other payment due hereunder from Tenant to Landlord remains unpaid five (5) 
days after the same is due, the amount of such unpaid rent or other payment 
shall be increased by a late charge to be paid Landlord by Tenant in an amount 
equal to five percent (5%) per month of the amount of the delinquent rent or 
other payment.  The amount of the late charge to be paid to Landlord by Tenant 
for any particular month shall be computed on the aggregate amount of 
delinquent rents and other payments, including all accrued late charges, then 
outstanding.  Failure to pay such amount within ten (10) days after demand 
shall be deemed an event of default.  The terms of this paragraph do not in any 
way effect or limit Landlord's remedies pursuant to Paragraph 17 of this Lease 
in the event said rent or other payment is unpaid after the date due.

        (d)     Landlord shall have the same right and remedies (including, 
without limitation, the right to commence a summary proceeding) for a default 
in the payment of Additional Rent as for a default in the payment of Base 
Rental notwithstanding the fact that Tenant may not then also be in default in 
the payment of Base Rental.

        (e)     Tenant agrees to deposit with Landlord on the date hereof the 
sum of TWENTY-FOUR THOUSAND TWO HUNDRED THIRTY-THREE AND NO/100 DOLLARS
($24,233.00), which sum shall be held by Landlord, without obligation for
interest, as security for the performance of Tenant's covenants and obligations
under this Lease, it being expressly understood and agreed that such deposit is
not an advance rental deposit or a measure of Landlord's damages in case of
Tenant's default.  Upon the occurrence of any Event of Default (as defined in
Section 17 hereof) by Tenant, Landlord may, from time to time, without prejudice
to any other remedy provided herein or provided by law, use such funds to the
extent necessary to made good any arrears of rent or other payments due Landlord
hereunder, and to pay or reimburse Landlord for any other damage, expense or
liability caused by or required to cure, such Event of Default; and Tenant shall
pay to Landlord on demand the amount so applied in order to restore the security
deposit to its original amount.  After termination of this Lease any remaining
balance of the security deposit shall be returned by Landlord to Tenant provided
all of Tenant's obligations under this Lease have been fulfilled. The security
deposit shall be transferred to any successor in interest to Landlord hereunder
and notice of such transfer given to Tenant within five (5) days after such
transfer.  Upon such transfer and notice, the transferror shall no longer be
liable for the security but the transferee shall become liable.


                                       3
<PAGE>   4
        3.      Use.

        (a)     The demised Premises shall be used only for the purpose of
manufacturing, receiving, storing, shipping and selling (other than retail)
products, materials and merchandise made and/or distributed by Tenant, and for
such other lawful purposes as may be incidental thereto.  Outside storage,
including without limitation, trucks and other vehicles and the washing thereof
at any time, is prohibited without Landlord's written consent.  Tenant shall at
its own cost and expense obtain any and all licenses, permits and other
governmental approvals necessary for any such use shall promptly deliver to
Landlord copies of such licenses, permits and governmental approvals upon
receipt thereof, and shall comply with the terms and conditions thereof. Tenant
shall comply with all governmental laws, ordinances and regulations applicable
to the use of the Premises, and Tenant's use of the common areas of the
Property, whether now or hereafter in force and shall promptly comply with all
governmental orders and directives for the correction, prevention and abatement
of violations in or upon, or connected with, the use of, the Premises, all at
Tenant's sole expense.  Tenant shall promptly deliver to Landlord a copy of any
such notice of violation it receives.  Tenant shall not permit any objectionable
or unpleasant odors, smoke, dust, gas, noise or vibrations to emanate from the
Premises, nor take any other action which would constitute a nuisance or would
disturb or endanger any other tenants of the Building or unreasonably interfere
with their use of their respective Premises or the common areas of the Property
nor use the Premises or the common areas of the Property in a manner which would
impair the proper and economic maintenance, operation and repair of the
Property.  Without Landlord's prior written consent, Tenant shall not receive,
store or otherwise handle any product, material or merchandise which is
explosive or highly inflammable.  Tenant will not permit the Premises to be used
for any purpose or in any manner (including, without limitation, any method of
storage) which would render the insurance thereon void or cause the State Board
of Insurance authority to disallow any sprinkler credits.  If any increase in
fire and extended coverage insurance premium paid by Landlord or other tenants
of the Building is caused by Tenant's use and occupancy of the Premises, or if
Tenant vacating the Premises and causes an increase in such premiums, then
Tenant shall pay as additional rent the amount of such increase to Landlord.

        (b)     Tenant shall not at any time use the Premises in a manner which 
would violate the Notice of Restrictions, dated August 29, 1985 and recorded 
on September 3, 1985 in Book 3683, page 2548 of the official records of Orange 
County, executed by Orlando Central Park, Inc. (the "Notice of Restrictions").  
Tenant acknowledges receipt of a copy of the Notice of Restrictions.

        (c)     Tenant agrees that the point pressure resulting from Tenant's 
racking system, inventory, forklifts and equipment pertaining to Tenant's use 
of the Premises shall not exceed allowable design floor loading of 3,000 pounds 
per square inch for floor slabs on grade.  Tenant shall be responsible to 
provide steel plates, angles or channels as required to distribute floor 
loading to building design loads.  Tenant shall only use forklifts that have 
rubber wheels or other wheels that will not damage floor slabs.  Tenant shall 
hold harmless Landlord from any loss, liability and expenses, both real and 
alleged, arising out of such damage or repair caused by Tenant's negligence or 
failure to comply with this paragraph and shall, at its sole cost and expense, 
promptly repair any damage or injury to the floor slab and other parts of the 
Building caused by Tenant and its employees, agents or invitees.

        4.      Taxes.

        (a)     As Additional Rent, Tenant agrees to pay monthly in advance 
without demand, deduction or set-off, 1/12th of Tenant's Proportionate Share 
(as defined in Paragraph 4(b)) of all taxes, assessments, and other 
governmental charges of any kind and 


                                       4
<PAGE>   5
nature whatsoever unforeseen as well as foreseen, (including any tax, excise or 
fee measured by or payable with respect to any rent, other than the taxes 
described in paragraph (g) below) (collectively, "Taxes") lawfully levied or 
assessed against the Building or the Property for the calendar year in which 
such month occurs, subject or proration for any partial month during the term 
of the Lease.  Such payments shall initially be based on an estimate thereof 
prepared by Landlord and delivered to Tenant, except if Landlord shall not 
have delivered such a statement prior to the commencement of such year, such 
payments shall be in an amount equal to the previous year's Taxes until 
Landlord shall deliver such a statement.  If Landlord's estimate of Taxes for 
any calendar year is delivered after commencement thereof or if such estimate 
is revised during such year, then the monthly payments described herein shall 
be appropriately adjusted and with respect to any payments previously made, if 
there be any deficiency, Tenant shall pay Landlord the amount thereof within 
twenty (20) days after demand thereof and if there shall be an overpayment, 
then (provided Tenant is not in default under this Lease) Tenant shall be 
forwarded the difference within twenty (20) days or the difference shall be 
credited against Tenant's next rent payment coming due hereunder.  
Notwithstanding the foregoing, Tenant's payments shall be calculated and paid 
in such a manner so that Landlord shall have received Tenant's Proportionate 
Share of any installment of Taxes not less than thirty (30) days prior to the 
date such installment of Taxes is due to the applicable governmental 
authority.  Within one hundred twenty (120) days after the end of each calendar 
year or as soon thereafter as practical, Landlord shall deliver to Tenant a 
statement of Taxes for the year just ended, accompanied by a computation of 
basic tax cost adjustment.  If such statement shows that the aggregate monthly 
tax payments paid for such year by Tenant is less than Tenant's Proportionate 
Share of Taxes as set forth in such statement, then Tenant shall pay the 
difference within twenty (20) days after receipt of such statement.  If such 
statement shows that Tenant's aggregate monthly tax payments for such year 
exceed Tenant's Proportionate Share of Taxes as set forth in such statement, 
then (provided Tenant is not in default under this Lease) Tenant shall be 
forwarded the difference within twenty (20) days or the difference shall be 
credited against Tenant's next rent payment coming due hereunder.  If this 
Lease has been terminated or the term hereof has expired prior to the date of 
such statement, then the adjustment for any deficiency or overpayment of Taxes 
shall survive the termination and shall be paid by the appropriate party 
within twenty (20) days after the date of delivery of the statement.  The 
benefit of any discount for early payment (i.e., payment before the last day 
such Taxes may be paid without being delinquent) of Taxes shall accrue solely 
to the benefit of Landlord.

        (b)     Tenant's Proportionate Share, as used in this Lease, shall mean 
a fraction, the numerator of which is the number of square feet contained in 
the Premises and the denominator of which is the number of square feet 
contained in the Building.  The parties agree that the number of square feet 
contained in the Premises is initially 72,520, the number of square feet 
contained in the Building is 356,583, and Tenant's Proportionate Share is 
initially 20.34%.  To the best of Landlord's knowledge, Landlord warrants that 
the aforementioned square footages are true and correct.

        (c)     If at any time during the term of this Lease, the present 
method of taxation shall be changed so that in lieu of the whole or any part of 
any Taxes levied or assessed against the Building or Property there shall be 
levied, assessed or imposed on Landlord a tax, including a franchise, transfer, 
capital stock or profit tax, assessment, levy or charge then all such taxes, 
assessments, levies or charges, or the part thereof so measured or based, shall 
be deemed to be included within the term "Taxes" for the purposes hereof.


                                       5
<PAGE>   6
        (d)     The Landlord shall have the right to employ a tax consulting 
firm to seek reduced assessments on the Building and the Land within the 
applicable taxing jurisdiction and to attempt to assure a fair tax burden on 
the Building and the Property within the applicable taxing jurisdiction.  
Tenant shall pay to Landlord upon demand from time to time, as Additional Rent, 
the amount of Tenant's Proportionate Share (as defined in subparagraph 4(b) 
above) of the cost of such services.

        (e)     Tenant shall pay as Additional Rent all increases in Taxes 
which may be attributable to additions or improvements to the Premises made by 
Tenant or on Tenant's behalf.  Payment shall be made by Tenant to Landlord 
on the rent payment day next following the issuance of a bill therefor by 
Landlord to Tenant.

        (f)     Any payment to be made pursuant to this Paragraph 4 with 
respect to the real estate tax year in which this Lease commences or terminates 
shall be prorated.

        (g)     The Landlord will receive monthly from Tenant the equivalent of 
six percent (6%) of all amounts paid as rent or for any other payment or 
reimbursement required herein.  Such sum is paid to the State of Florida by the 
Landlord under the Florida Sales Tax Statute.  The Landlord receives no 
monetary benefit from the collection and disbursement of this charge.  Should 
such tax rate change under the Florida Sales Tax Statute, the Landlord will 
receive monthly from Tenant the amount reflective of appropriate changes. 

        5.      Landlord's Repairs.  Landlord shall at its expense maintain 
only the roof, foundation and the structural soundness of the exterior walls of 
the Building, in good repair, reasonable wear and tear excepted.  
Notwithstanding the foregoing, Tenant shall repair and pay for any damage to 
the roof, foundation and structural soundness of the exterior walls of the 
Building and any other part of the Property caused by the negligence or willful 
act of Tenant, or Tenant's employees, agents or invitees, or caused by Tenant's 
default hereunder.  The term "walls" as used herein shall not include windows, 
glass or plate glass, doors, special store fronts or office entries.  Tenant 
shall immediately give Landlord written notice of defect or need for repairs, 
after which Landlord shall have a reasonable opportunity to repair same or cure 
such defect.  Landlord's liability with respect to any defects, repairs or 
maintenance for which Landlord is responsible under any of the provisions of 
this Lease shall be limited to the cost of such repairs or maintenance or the 
curing of such defect.

        6.      Tenant's Repair and Maintenance and Common Area Charges.

        (a)     Tenant shall at its own cost and expense keep and maintain all 
parts of the Premises (except those for which Landlord is expressly responsible 
under the terms of this Lease) in good condition, promptly making all necessary 
repairs and replacements, structural or nonstructural, including but not 
limited to, windows, glass and plate glass, doors, any special office entry, 
interior walls and finish work, floors and floor covering, downspouts, 
gutters, heating and air conditioning systems, dock boards, truck doors, dock 
bumpers, paving, plumbing work and fixtures.  Tenant shall promptly make all 
repairs to the Property resulting from the installation, use or operation of 
its equipment and other personal property in the Property.  Tenant shall not be 
obligated to repair any damage to the Building caused by fire, tornado, or 
other casualty covered by the insurance to be maintained by Landlord pursuant 
to subparagraph 12(a) below, except that Tenant shall be obligated to repair 
all wind damage to glass except with respect to tornado or hurricane damage.

        (b)     Tenant shall not damage any demising wall or disturb the 
integrity and support provided by any demising wall and shall, at its sole cost 
and expense, promptly repair any damage or injury to any demising wall caused 
by Tenant or its employees, agents or invitees.


                                       6
<PAGE>   7

        (c)  Except as otherwise provided herein, Landlord shall perform, with
respect to the exterior of the Building and the common areas of the Property,
the paving and landscape maintenance, exterior painting, common area lighting
maintenance, roof maintenance, general maintenance, and common sewage line
plumbing and shall pay any other similar expenses which are required to maintain
the same.  Tenant shall pay as Additional Rent, monthly, in advance, 1/12 of
Tenant's Proportionate Share (as defined in subparagraph 4(b) above) of the cost
and expense of the care of the exterior of the Building and the grounds around
the Building ("Common Area Maintenance Charges"), including but not limited to
the mowing of grass, care of shrubs, general landscaping, paving and other 
repairs and maintenance of parking area, driveway, curbs and gutters, lighting 
of the  grounds around the Building, Building exterior repainting, window 
cleaning and common sewage line plumbing, (and of any common security services 
or systems), subject to proration for any partial month during the term of the 
Lease; provided, however, that if Tenant can be clearly identified as being 
responsible for obstructions or stoppage of the common sanitary sewage line, 
then Tenant shall pay the entire cost of clearing the same upon demand, as 
Additional Rent.  Such payments shall initially be based on an estimate 
thereof prepared by Landlord and delivered to Tenant except if Landlord shall 
not have delivered such a statement prior to the commencement of such year, 
such payments shall be in an amount equal to the previous year's Common Area 
Maintenance Charges until Landlord shall deliver such a statement.  If 
Landlord's estimate of Common Area Maintenance Charges for any calendar year is
delivered after commencement thereof or if such estimate is revised during such
year, then the monthly payments described herein shall be appropriately adjusted
and with respect to any payments previously made, if there be any deficiency,
Tenant shall pay Landlord the amount thereof within twenty (20) days after
demand therefor and if there shall be an overpayment, then (provided Tenant is 
not in default under this Lease) Tenant shall be forwarded the difference 
within twenty (20) days or the difference shall be credited against Tenant's 
next rent payment coming due hereunder. Notwithstanding the foregoing, Tenant's 
payments shall be calculated and paid in such a manner so that Landlord shall 
have received Tenant's Proportionate Share of any installment of Common Area 
Maintenance Charges not less than thirty (30) days prior to the date such 
installment of Common Area Maintenance Charges is due. Within one hundred 
twenty (120) days after the end of each calendar year or as soon thereafter as 
practicable, Landlord shall deliver to Tenant a statement of Common Area 
Maintenance Charges for the year just ended, accompanied by a computation of 
basic common area maintenance cost adjustment. If such statement shows that the 
aggregate monthly common area maintenance payments paid for such year by Tenant 
is less than Tenant's Proportionate Share of Common Area Maintenance Charges as 
set forth in such statement, then Tenant shall pay the difference within twenty 
(20) days after receipt of such statement. If such statement shows that 
Tenant's aggregate monthly common area maintenance payments for such year 
exceed Tenant's Proportionate Share of Common Area Maintenance Charges as set 
forth in such statement, then (provided Tenant is not in default under this 
Lease) Tenant shall be forwarded the difference within twenty (20) days or the 
difference shall be credited against Tenant's next rent payment coming due 
hereunder. If this Lease has been terminated or the term hereof has expired 
prior to the date of such statement, then the adjustment for any deficiency or 
overpayment of Common Area Maintenance Charges shall survive the termination 
and shall be paid by the appropriate party within twenty (20) days after the 
date of delivery of the statement. In connection with the performance of the 
work as described in this Paragraph 6(d), Landlord shall be allowed to charge a 
ten percent (10%) administrative fee to be paid monthly.


                                       7


<PAGE>   8
        (d) Tenant and its employees, customers and licensees shall have the 
exclusive right to use such parking areas, if any, as may be designated by 
Landlord in writing, subject to reasonable rules and regulations as Landlord 
may from time to time prescribe and subject to rights of ingress and egress of 
other tenants. Landlord shall not be responsible for enforcing Tenant's 
exclusive parking rights against any third parties. There have been no 
exclusive parking rights given to Tenant with the signing of this Lease. 
Landlord shall have no obligation to provide any guard service or to otherwise 
patrol or secure the parking and other common areas. Landlord shall not be 
liable for any injury to person or property or for loss or damage to any 
vehicle or its contents on or about the parking areas. Tenant shall further 
have the non-exclusive right to park automobiles and light trucks (but not heavy
duty trucks or tractors or trailers) on the property owned by Landlord and
described and depicted on Exhibit "E" attached hereto (the "Off-Site Parking
Area"). The Tenant's right to park automobiles and light trucks on the Off-Site
Parking Area shall be revocable by Landlord at any time upon delivery by
Landlord to Tenant of written notice of revocation. The commercial liability
insurance policy required to be maintained by Tenant hereunder shall include
coverage for Tenant's use of the Off-Site Parking Area, and all provisions
contained in this Lease regarding the use of the Premises and Tenant's Indemnity
of Landlord with respect thereto shall apply to Tenant's use of the Off-Site
Parking Area as fully as if the Off-Site Parking Area were a part of the
Property.

        (e) In the event the Building is rail served, Landlord shall have the 
right to coordinate any repairs and other maintenance of any rail tracks 
serving the Building, and if Tenant uses such rail tracks, Tenant shall 
reimburse Landlord from time to time upon demand, as additional rent, for a 
share of the costs of such repairs and maintenance and any other sums specified 
in any agreement to which Landlord is a party respecting such tracks, such a 
share to be a fraction, the numerator of which is the number of square feet 
contained in the Premises, and the denominator of which is the number of square 
feet occupied by rail users in the building. Tenant agrees to sign a joint 
maintenance agreement with the railroad company servicing the Premises, if 
requested by the railroad company.

        (f) Tenant shall, at its own cost and expense, enter into a regularly 
scheduled preventive maintenance/service contract with a maintenance contractor 
for servicing all hot water, heating and air conditioning systems and equipment 
within the Premises. The maintenance contractor and the contract must be 
approved by Landlord. The service contract must include all services suggested 
by the equipment manufacturer within the operation/maintenance manual and must 
become effective (and a copy thereof delivered to Landlord) within thirty (30) 
days of the date Tenant takes possession of the Premises. Tenant shall pay for 
and have provided for its Premises regular termite and pest extermination 
services and regular removal of trash and debris.

        (g) Tenant agrees that no washing of any type (other than reasonable 
restroom or kitchen washing) will take place on the Premises including the 
truck apron, service court and parking areas.

        7. Alterations. Tenant shall not make any alterations or improvements 
to the Premises (including but not limited to roof and wall penetrations) 
without prior written consent of Landlord, which consent may be granted or 
denied in Landlord's sole discretion, and then only by contractors and in such 
manner and with such materials as may be approved by Landlord in Landlord's 
sole discretion. Notwithstanding the foregoing, Tenant may, without the 
consent of Landlord, but at its own cost and expense and in a good workmanlike 
manner erect such shelves, bins, machinery and trade fixtures as it may deem 
advisable, without altering the basic character of the Building and without 
overloading or damaging the Building and in each case complying 


                                       8

<PAGE>   9
with all applicable governmental laws, ordinances, regulations and other 
requirements. All alterations, additions, improvements and partitions erected 
by Tenant shall be and remain the property of Tenant during the term of this 
Lease and Tenant shall, unless Landlord otherwise elects as hereinafter 
provided, remove all alterations, additions, improvements and partitions 
erected by Tenant and restore the Premises to their original condition by the 
Termination Date or upon earlier vacating of the Premises; provided however, 
that if Landlord so elects prior to termination of this Lease or upon earlier 
vacating of the Premises, such alterations, additions, improvements and 
partitions shall become the property of Landlord as of the Termination Date or 
upon earlier vacating of the Premises and shall be delivered up to the Landlord 
with the Premises. All shelves, bins, machinery and trade fixtures installed by
Tenant may be removed by Tenant prior to the Termination Date if Tenant so
elects, and shall be removed by the Termination Date or upon earlier vacating of
the Premises if required by Landlord; upon any such removal Tenant shall restore
the Premises to their original condition. All such removals and restoration
shall be accomplished in good workmanlike manner so as not to damage the
Building. Any such shelves, bins, machinery and trade fixtures or other property
of Tenant which shall remain in the Premises after the Termination Date, may, at
the option of Landlord, be deemed to have been abandoned, and in such case such
items may be retained by Landlord, without accountability and in such manner as
Landlord shall determine, at Tenant's expense including all costs of selling,
disposing, removing and storing such property.

        8. Signs. Building exterior tenant identification signs shall be of 
such order, size and location as shall be designated by Landlord. Exterior 
frames will be furnished by Landlord at Landlord's expense. The cost of Tenant 
identification panels and installing same shall be the responsibility of 
Tenant. No other signs shall be installed by Tenant. Tenant shall not install 
drapes, curtains, blinds or any window treatment, including signs, letters, 
etc., displayed behind windows so as to be visible to the exterior of the 
Premises, without Landlord's prior written approval. Tenant shall secure and 
maintain, at Tenant's sole cost and expense, all required governmental permits 
and approvals and all permits and approvals required pursuant to the Notice of 
Restrictions with respect to any signs.

        9. Inspection and Access.

        (a) Landlord and Landlord's agents and representatives shall have the 
right to enter and inspect the Premises at any reasonable time during business 
hours for the purpose of ascertaining the condition of the Premises to make 
such repairs as may be required or permitted to be made by Landlord under the 
terms of this Lease or to show the Premises to prospective or actual purchasers 
or mortgagees. In the case of an emergency, Landlord shall be entitled to enter 
the Premises at any time. During the period that is six (6) months prior to the 
end of the term hereof, Landlord and Landlord's agents and representatives 
shall have the right to enter the Premises at any reasonable time during 
business hours for the purpose of showing the Premises and shall have the right 
to erect on the Premises a suitable sign indicating the Premises are available. 
Tenant shall give written notice to Landlord at least thirty (30) days prior to 
vacating the Premises and shall arrange such joint inspection of the Premises 
prior to vacating. In the event of Tenant's failure to arrange such joint 
inspection, Landlord's inspection at or after Tenant's vacating the Premises 
shall be deemed correct for purposes of determining Tenant's responsibility for 
repairs and restoration.

        (b) Landlord reserves the right, and Tenant shall permit Landlord, to 
install, erect, use and maintain pipes, ducts and conduits in and throughout 
the Premises, provided said pipes, ducts and conduits do not materially 
interfere with Tenant's


                                       9

<PAGE>   10
operations. Nothing herein contained shall be construed as a grant or demise by 
Landlord to Tenant of the roof or exterior walls of the Building, of the Land, 
and/or of any parking or other common areas located on the Property.

        10. Utilities. Tenant shall, at its own cost and expense, provide its 
own heating, ventilation and air conditioning system. Landlord agrees to 
provide at its own cost water, electricity and telephone service connections to 
the Premises, but Tenant shall pay for all water, gas, heat, light, power, 
telephone, sewer, sprinkler charges and other utilities and services used on or 
from the Premises, together with any taxes, penalties, surcharges or the like 
pertaining thereto and shall furnish all electric light bulbs and tubes. 
Landlord shall have no obligation to provide any utility services to Tenant or 
to perform any cleaning of the Premises. If any such services are not 
separately metered to Tenant, Tenant shall pay its proportionate share of all 
charges incurred jointly with other premises. Landlord shall in no event be 
liable for any interruption or failure of utility services on the Premises. 
Tenant shall not use any such systems in excess of the capacity of the wires, 
cables, equipment and other facilities thereof.

        11. Assignment and Subletting.

        (a) Tenant shall not have the right to assign, mortgage or encumber 
this Lease, whether voluntarily, involuntarily or by operation of law, or to 
sublet the whole or any part of the Premises or to permit the Premises or any 
part thereof to be used or occupied by others, in each case without the prior 
written consent of Landlord. Tenant hereby agrees that Landlord shall be 
entitled to withhold its consent, in its sole discretion, to any such sublease 
or assignment except if the building is one hundred percent (100%) leased and 
the proposed subtenant or assignee is not an existing tenant in a building 
owned or managed by Landlord or an affiliated entity and is not a prospective 
tenant for other space within the Building or for space within any other 
buildings owned and/or managed by Landlord or an affiliated entity, then 
Landlord's consent shall not be unreasonably withheld, subject to the 
provisions set forth below and provided (i) Tenant pays Landlord's reasonable 
costs in reviewing the proposed assignment or sublease in connection with the 
requested consent, including any attorneys' fees incurred by Landlord, (ii) in 
Landlord's reasonable judgment, (x) the proposed sublessee or assignee is a 
reputable party whose financial net worth and financial responsibility is, 
considering the responsibility included, satisfactory to Landlord and (y) the 
nature and character of the proposed sublease or assignee, its business or 
activities and the proposed use of the space are in keeping with the standards 
of the Property, and (iii) Tenant shall not be in default beyond the applicable 
notice and grace period hereunder.

        (b) In the event Tenant proposes to assign or sublease the Premises, 
Tenant shall submit in writing the name and address of the proposed assignee or 
sublessee and a true and complete copy of the proposed sublease or instrument 
of assignment together with information regarding such subtenant or assignee 
sufficient for Landlord to make its determination described in clause (ii) of 
paragraph (a) above. Landlord shall have fifteen (15) days after receipt of 
notice to consent to or deny said proposal. Upon review of said proposal, 
Landlord shall have the sole option to terminate this Lease with Tenant for all 
or, with respect to a proposed partial subletting, part of the Premises, as 
though the early termination date was the Termination Date. With respect to any 
partial termination, the Base Rent and additional rent shall be reduced 
proportionately, and Tenant shall pay for and perform all work required to 
physically separate the remaining premises from the terminated premises and to 
permit lawful occupancy of both. In the event of any termination, Landlord 
shall be free to, and shall have no liability to Tenant if Landlord shall, 
lease the Premises or any portion thereof to Tenant's proposed assignee or 
subtenant. Tenant shall execute all documents requested by Landlord to evidence 
and effectuate any such termination. Tenant shall, at Tenant's own cost and 
expense, discharge

                                       10

<PAGE>   11
in full any outstanding commission obligation on the part of the Landlord with 
respect to this Lease, and any commissions which may be due and owing as a 
result of any proposed assignment or subletting, whether or not the Lease is 
terminated pursuant hereto and rented by Landlord to the proposed subtenant or 
any other tenant.

        (c) Notwithstanding any permitted assignment or subletting, Tenant 
shall at all times remain directly, primarily and fully responsible and liable 
for the payment of the rent herein specified and for compliance with all of its 
other obligations under the terms, provisions and covenants of this Lease. Upon 
the occurrence of an Event of Default as herein defined, if the Premises or any 
part thereof are then assigned or sublet, Landlord, in addition to any other 
remedies herein provided, or provided by law, may at its option collect 
directly from such assignee or subtenant all rents coming due to Tenant under 
such assignment or sublease and apply such rent against any sums due to 
Landlord from Tenant hereunder, and no such collection shall be construed to 
constitute a novation or a release of Tenant from the further performance of 
Tenant's obligations hereunder.

        (d) Any assignment must contain an assumption by the assignee of all of 
the terms, conditions and covenants of this Lease to be performed by Tenant and 
any sublease shall be and shall provide that the subtenant shall be subject to 
and bound by all of the terms, conditions and covenants of this Lease. Each 
sublease and assignment shall provide that the sublessee or assignee, as the 
case may be, shall not have the right to further assign or sublease, without 
the consent of landlord in each instance in accordance with this Article 11.

        12. Fire and Casualty Damage.

        (a) Landlord agrees to maintain standard fire and extended coverage 
insurance covering the Building in an amount not less than 80% (or such greater 
percentage as may be necessary to comply with the provisions of any 
co-insurance clauses of the policy) of the "replacement cost" thereof as such 
term is defined in the Replacement Cost Endorsement to be attached thereto, 
such coverage and endorsements to be defined, provided and limited in the 
standard forms prescribed by the insurance regulatory authority for the State 
in which the Premises are situated for use by insurance companies within such 
state. Subject to the provisions of subparagraphs 12(c), 12(d) and 12(e) below, 
such insurance shall be for the sole benefit of Landlord and under its sole 
control. Tenant agrees to pay to Landlord, as Additional Rent, the amount of 
Tenant's full Proportionate Share (as defined in subparagraph 4(b) above) of 
such insurance costs. Said payments shall be made to Landlord within ten (10) 
days after presentation to Tenant of Landlord's statement setting forth the 
amount due. Any payment to be made pursuant to this subparagraph (a) with 
respect to the year in which this Lease commences or terminates shall bear the 
same ratio to the payment which would be required to be made for the full year 
as the part of such year covered by the term of this Lease bears to a full year.

        (b) In the event that the Building or the Premises is damaged or 
destroyed by fire, tornado and other casualty, Tenant shall give immediate 
written notice thereof to Landlord.

        (c) In the event that the Building or the Premises is (i) totally
destroyed by fire, tornado, or other casualty; or (ii) is so damaged thereby
that rebuilding or repairs cannot in Landlord's estimation be completed within
two hundred (200) days after the date upon which Landlord is notified of such
damage, or if the Building shall be so damaged or destroyed by fire or other
casualty (whether or not the Premises are damaged or destroyed) that its repair
or restoration requires the expenditure (as estimated by a reputable contractor
or architect designated by Landlord) of more than 50 percent of the full
insurable value of the Building


                                       11

<PAGE>   12
immediately prior to the casualty; or (iii) if at least 50 percent of the floor 
area of the Premises is damaged or destroyed by fire or other casualty during 
the last eighteen (18) months of the then current term of this Lease, then, in 
any such cases, Landlord may terminate this Lease by giving Tenant notice to 
such effect within ninety (90) days after the date of the casualty, and upon 
the date specified in such notice (which shall not be less than 10 days after 
such notice is given), this Lease and the estate hereby granted shall terminate 
as if the date specified in such notice were the Termination Date.

        (d) In the event that the Building or the Premises is damaged by any 
peril covered by the insurance to be provided by Landlord under subparagraph 
12(a) above, and Landlord is not entitled to or does not elect to terminate 
this Lease as provided in paragraph (c), then this Lease shall not terminate, 
and Landlord shall at its sole cost and expense thereupon proceed with 
reasonable diligence to rebuild and repair the Building or the Premises, as the 
case may be, to substantially the condition in which they existed prior to such 
damage, except that Landlord shall not be required to rebuild, repair or 
replace any part of the partitions, fixtures, additions and other improvements 
which may have been placed in, on or about the Premises by Tenant. If the 
Premises are untenantable in whole or in part following such damage, the Base 
Rental payable hereunder and Tenant's Proportionate Share shall be abated or 
reduced, as the case may be, in the proportion that the untenantable area of 
the Premises bears to the total area of the Premises from the date of the 
damage or the total area of the Premises from the date of the damage or 
destruction to the date on which any such portion of the Premises shall be made 
tenantable. Landlord shall substantially complete such repairs and rebuilding 
with one hundred fifty (150) days after the date upon which Landlord is 
notified by Tenant of such damage, provided that if construction is delayed 
because of strikes, lockouts, casualties, acts of God, war, material or labor 
shortages, governmental regulations or control or other causes beyond the 
control of Landlord, the period of rebuilding and repairing the Building or the 
Premises, as the case may be, shall be extended for the amount of time Landlord 
is so delayed, not to exceed ninety (90) days (such two hundred day period, as 
it may be so extended, is hereinafter referred to as the "Repair Period"). In 
the event that Landlord should fail to substantially complete such repairs and 
rebuilding within the Repair Period, Tenant may at its option terminate this 
Lease by delivering written notice of termination to Landlord as Tenant's 
exclusive remedy whereupon all rights and obligations hereunder shall cease 
and terminate.

        (e) Notwithstanding anything herein to the contrary, in the event the 
holder of any indebtedness secured by a mortgage or deed of trust covering the 
Premises requires that the insurance proceeds be applied to such indebtedness, 
then Landlord shall have the right to terminate this Lease by delivering 
written notice of termination to Tenant within fifteen (15) days after such 
requirement is made by such holder, whereupon all rights and obligations 
hereunder shall cease and terminate.

        (f) Provided that Landlord's right of full recovery under its fire or 
other property insurance policies are not adversely effected or prejudiced 
thereby, Landlord hereby waives any and all right of recovery which it might 
otherwise have against Tenant and its employees for loss or damage occurring to 
the Property, to the extent the same is covered by Landlord's insurance, 
notwithstanding that such loss or damage may result from the negligence or 
fault of Tenant or its employees. Provided that Tenant's right of full 
recovery under its fire or other property insurance policies are not adversely 
effected or prejudiced thereby, Tenant hereby waives any and all right of 
recovery which it might otherwise have against Landlord, its agents, and its 
and their employees (including, without limitation, Landlord's agent and 
Landlord's property manager), for loss or damage occurring to Tenant's property 
whether or not insured, notwithstanding that such loss or damage may result 
from the negligence or fault of Landlord, but only to the extent the same 
would have been covered by insurance if Tenant had obtained an all risk policy 
of insurance covering such property for the full replacement value thereof 
without deduction. Each of Landlord and Tenant agrees that it will cause its 
insurance carriers to include in its policies a clause or endorsement pursuant 
to which the insurance carriers


                                       12

<PAGE>   13
(i) waive all right of subrogation against the other party, its agents and 
employees and (ii) agree that such policies shall not be invalidated should the 
insured waive in writing prior to a loss any or all right of recover against 
any party for losses covered by such policies. If extra cost shall be charged 
therefor, each party shall advise the other thereof and such party shall not be 
obligated to obtain the same unless the other party agrees to pay the amount of 
the extra cost.

        13.  Liability.

        (a)  Landlord, its trustees, beneficiaries, partners, directors, 
officers and agents and its and their employees, including Landlord's agent and 
Landlord's property manager, shall not be liable for any loss, damage or injury 
to Tenant or any other person or to its or their property, unless caused by or 
resulting from the gross negligence or willful misconduct of Landlord, its 
agents or employees in the operation or maintenance of the Premises or the 
Property. Further, neither Landlord, Landlord's agent nor Landlord's property 
manager, even if negligent, shall be liable for consequential damages arising 
out of any loss of use of the Premises or any equipment or facilities therein 
by Tenant or any person claiming through or under Tenant. In no event shall 
Landlord, Landlord's agent or Landlord's property manager be liable for any 
damages, claims, expenses or liabilities in excess of Landlord's equity in the 
Building regardless of any fault or negligence on the part of Landlord, 
Landlord's agent or Landlord's property manager. Tenant hereby covenants and 
agrees that it will at all times indemnify, pay on behalf of defend, and hold 
harmless Landlord, its trustees, beneficiaries, partners, directors, officers 
and agents and its and their employees including Landlord's agent and 
Landlord's property manager from any loss, liability, claims, costs and 
expenses, including without limitation, attorney's fees and expenses, both real 
and alleged, arising from or in connection with (i) the conduct or management 
of the Premises or of any business therein, or any work or thing whatsoever 
done, or any condition created (other than by Landlord, Landlord's agent or 
Landlord's property manager) in or about the Premises during the term of this 
Lease or during the period of time, if any, prior to the Commencement Date that 
Tenant may have been given access to the Premises; (ii) any act, omission or 
negligence of Tenant or any of its subtenants, agents, contractors, invitees, 
licensees or its or their employees; (iii) any accident, injury or damage 
whatever occurring in, at or upon the Premises not due to the gross negligence 
or willful misconduct of the Landlord; and (iv) any breach or default by Tenant 
in the full and prompt payment and performance of Tenant's obligations under 
this Lease. In case any action or proceeding be brought against Landlord and/or 
its trustees, beneficiaries, partners, directors, officers, agents or its or 
their employees, including Landlord's agent and Landlord's property manager, by 
reason of any such claim, Tenant, upon notice from Landlord shall resist and 
defend such action or proceeding (by counsel reasonably satisfactory to 
Landlord).

        (b)  Tenant shall procure and maintain throughout the term of this 
Lease at its sole cost and expense, (i) naming Landlord, Jones, Lang, Wootton 
Realty Advisors and property manager as additional insured parties, a 
commercial general liability insurance policy, including, without limitation, 
blanket contractual liability coverage (which shall cover Tenant's obligations 
under paragraph (a) above except for the payment of rent), independent 
contractors coverage, broad form property damage, personal injury coverage, 
products/completed operations and premises operations protecting against any 
liability whatsoever, occasioned by any occurrence on or about the Premises 
with limits not less than $5,000,000.00 per occurrence in respect of injury to 
persons (including death), property damage or destruction, including loss of 
use thereof, and Worker's compensation and Employee's Liability insurance (ii) 
naming Tenant as the insured, a fire and all risk policy, boiler and machinery 
and plate glass insurance 


                                     13
<PAGE>   14
policies insuring the full replacement value of Tenant's furniture, trade 
fixtures, inventory and personal property located in the Premises against fire, 
theft, business interruption, sprinkler leakage and water damage and such other 
risks or hazards as are insurable under present and future forms of "All Risk" 
insurance policies, and with a maximum deductible of $1,000,000. All such 
policies shall be procured by Tenant from responsible insurance companies 
satisfactory to Landlord. Certified copies of such policies, together with 
receipt evidencing payment of premiums therefor shall be delivered to Landlord 
prior to the Commencement Date of this Lease. Not less than fifteen (15) days 
prior to the expiration date of any such policies, Tenant shall deliver or 
cause to be delivered to Landlord certified copies of the renewals thereof 
(bearing notations evidencing the payment of renewal premiums). Such policies 
shall further provide that not less than twenty (20) days written notice shall 
be given to Landlord before such policy may be canceled or materially modified. 
If Tenant hires a contractor or subcontractor, contractor shall carry general 
liability insurance naming Landlord, Jones, Lang, Wootton Realty Advisors and 
property manager as additional insurers.

        14. Condemnation.

        (a) In the event that the whole or any part of the Building, Property 
or Premises is taken for any public or quasi-public use under governmental law, 
ordinance or regulation, or by right of eminent domain, or by private purchase 
in lieu thereof (collectively, a "Taking"), and the Taking would prevent or 
materially interfere with the Tenant's use of the Building, Property or 
Premises for the purpose for which they are being used, this Lease shall 
terminate effective when the physical taking of the Premises occurs.

        (b) If a Taking of part of the Premises occurs and this Lease is not 
terminated as provided in the subparagraph (a) above, this Lease shall not 
terminate but the Base Rental payable hereunder and Tenant's Proportionate 
Share during the unexpired portion of the Lease shall be adjusted according to 
the rentable area remaining tenantable.

        (c) Landlord shall be entitled to receive the entire award or payment 
in connection with any Taking without deduction therefrom for any estate vested 
in Tenant by this Lease and Tenant hereby assigns to Landlord any right it may 
have to receive any award or payment as may be allocated to its interests in 
this Lease or the Property in any proceedings related to such a Taking.

        15. Surrender and Holding Over. Tenant will, at the expiration or other 
termination of this Lease, quit and surrender the Premises to Landlord "broom 
clean" and in good order, condition and repair, except for ordinary wear and 
tear and except for damage by fire and other casualties which results in 
termination of the Lease by Landlord as provided for in paragraph 12. Tenant's 
obligation to observe or perform this covenant shall survive the expiration or 
other termination of this Lease. If Tenant retains possession of the Premises 
or any part thereof after such termination, then Landlord may at its option 
serve written notice upon Tenant that such holding over constitutes either (i) 
creation of a month-to-month tenancy, upon the terms and conditions set forth 
in this Lease, or (ii) creation of a tenancy at sufferance, upon the terms and 
conditions set forth in this Lease, provided, however, that in either case the 
monthly rental or daily rental, as the case may be, shall, in addition to all 
others sums which are to be paid by Tenant hereunder be equal to one and 
one-half times the rental being paid to Landlord under this Lease immediately 
prior to such termination. If no such notice is served, then a tenancy at 
sufferance shall be deemed to be created at the rent set forth in the preceding 
sentence. Tenant's payment to Landlord of one and one-half times the rental 
shall represent liquidated damages and not a penalty, it being agreed that the 
damage to Landlord resulting from any failure by Tenant to timely surrender 
possession of the Premises will be substantial and will be impossible to 
measure accurately. The provisions of this paragraph shall not constitute a 
waiver by Landlord of any right of re-entry

                                       14

<PAGE>   15
as herein set forth, nor shall receipt of any rent or any other act in apparent 
affirmance of the tenancy operate as a waiver of the right to terminate this 
Lease for a breach of any of the terms, covenants or obligations herein on 
Tenant's part to be performed.

        16. Quiet Enjoyment. Landlord represents and warrants that it has full 
right and authority to enter into this Lease and that Tenant, upon paying the 
rental herein set forth and performing its other covenants and agreements 
herein set forth shall peaceably and quietly have, hold and enjoy the Premises 
for the Lease Term hereof without hindrance or molestation from Landlord or any 
person claiming by, through and under Landlord, subject to the terms and 
provisions of this Lease.

        17. Events of Default. The following events shall be deemed to be 
"Events of Default" by Tenant under this Lease:

        (a) Tenant shall fail to pay any installment of the Base Rental when 
due, or any payment with respect to Taxes or other Additional Rent hereunder, 
when due, and such failure shall continue to a period of ten (10) days from the 
date that Landlord has provided written notice that payment is past due, 
provided, however, that Landlord shall be obligated to give written notice of 
said failure not more than two (2) times during any twelve (12) month period 
and thereafter, Tenant shall be deemed to have received written notice on the 
date that such payment was due.

        (b) Tenant shall become insolvent, or shall make a transfer in fraud of 
creditors, or shall make an assignment for the benefit of creditors.

        (c) Tenant shall file a petition under any section or chapter of the 
National Bankruptcy Act, as amended, or under any similar law or statute of the 
United States or any State thereof, or Tenant shall be adjudged bankrupt or 
insolvent in proceedings filed against Tenant thereunder.

        (d) A receiver or trustee shall be appointed for all or substantially 
all of the assets of Tenant.

        (e) Tenant shall desert any substantial portion of the Premises.

        (f) Tenant shall fail to execute, within twenty (20) days after demand 
by Landlord, any document that Tenant is obligated to execute pursuant to 
paragraph 20, 21 or 29(d) hereof.

        (g) Tenant shall assign, in whole or in part, its interest in this 
Lease or sublet, in whole or in part, the Premises in violation of paragraph 11.

        (h) Tenant shall fail to comply with any term, provision or covenant of 
this Lease (other than the foregoing in this Paragraph 17), and shall not cure 
such failure within twenty (20) days after written notice thereof to Tenant, 
or, in the case of a failure which cannot be cured with due diligence within 
said twenty (20) day period, shall not notify Landlord within said twenty (20) 
day period of Tenant's intention to duly institute all steps necessary to 
remedy such default, duly institute within said twenty (20) day period all such 
steps, and thereafter diligently and continuously prosecute to completion the 
cure of such failure.

        18. Remedies. Upon the occurrence of any such Event of Default 
described in Paragraph 17 hereof, Landlord shall have the option to pursue any 
one or more of the following remedies without any notice or demand whatsoever:

        (a) Terminate this Lease, in which event Tenant shall immediately 
surrender the Premises to Landlord, and if Tenant fails so to do, Landlord may, 
without prejudice to any other remedy which it may have for possession or 
arrearages in rent, enter upon and take possession of the Premises or any part 
thereof and expel or remove Tenant and any other person who may be occupying 
such Premises or any part thereof, by any suitable action or proceeding at law, 
by force or otherwise without being liable to indictment, prosecution or for 
any claim of damages therefor; and Tenant shall thereupon pay to Landlord all 
Base Rental and

                                       15

                                        
<PAGE>   16
Additional Rent payable up to the time of such termination of this lease, or of 
such recovery of possession of the Premises by landlord, as the case may be and 
agrees to pay to Landlord on demand the amount of all loss and damage which 
Landlord may suffer by reason of such termination, whether through inability to 
relet the Premises on satisfactory terms or otherwise.

        (b) Enter upon and take possession of the Premises or any part thereof 
and expel or remove Tenant and any other person who may be occupying the 
Premises or any part thereof, by suitable action or proceeding at law, by 
force or otherwise without being liable to indictment, prosecution or any 
claim for damages therefor, and relet the Premises and receive the rent 
therefor; and Tenant shall thereupon pay to Landlord Base Rental and Additional 
Rent payable up to the time of such recovery of possession of the Premises by 
Landlord and agrees to pay to the Landlord on demand any deficiency that may 
arise by reason of such reletting. In the event Landlord is successful in 
reletting the Premises at a rental in excess of that agreed to be paid by 
Tenant pursuant to the terms of this Lease, Landlord and Tenant each mutually 
agree that Tenant shall not be entitled, under any circumstances, to such 
excess rental, and Tenant does hereby specifically waive any claim to such 
excess rental.

        Pursuit of any of the foregoing remedies shall not preclude pursuit of
any of the other remedies herein provided or any other remedies provided by law,
nor shall pursuit of any remedy herein provided constitute a forfeiture or
waiver of any rent due to Landlord hereunder or of any damages accruing to
Landlord by reason of the violation of any of the terms, provisions and
covenants herein contained. No act or thing done by the Landlord or its agents
during the Lease Term shall be deemed a termination of this Lease or an
acceptance of the surrender of the Premises, and no agreement to terminate this
Lease or accept a surrender of the Premises shall be valid unless in writing
signed by Landlord. No waiver by Landlord of any violation or breach of any of
the terms, provisions and covenants herein contained shall be deemed or
construed to constitute a waiver of any other violation or breach of any of the
terms, provisions and covenants herein contained. Landlord's acceptance of the
payment of rental or other payments hereunder after the occurrence of an Event
of Default shall not be construed as a waiver of such default, unless Landlord
so notifies Tenant in writing. Forbearance by Landlord to enforce one or more of
the remedies herein provided upon a default shall not be deemed or construed to
constitute a waiver of such default or of landlord's right to enforce any such
remedies with respect to such default or any subsequent default. If, on account
of any breach or default by Tenant in Tenant's obligations under the terms and
conditions of this Lease, it shall become necessary or appropriate for Landlord
to employ or consult with an attorney concerning or to enforce or defend any of
Landlord's rights or remedies hereunder, Tenant agrees to pay any reasonable
attorney's fees to incurred.

        19. Landlord's Right of Self-help. If Tenant shall default in the 
performance of any of Tenant's obligations under this Lease, Landlord, without 
thereby waiving such default, may (but shall not be obligated to) enter upon 
the Premises, without being liable to indictment, prosecution or any claim for 
damages therefor, and remedy such default for the account of Tenant, 
immediately and without notice in a case of emergency, and in any other case 
only if Landlord shall have notified Tenant of such default and the applicable 
grace period for curing such default shall have expired. Tenant agrees to 
reimburse Landlord on demand for any expenses which Landlord may incur in thus 
effecting compliance with Tenant's obligations under this Lease plus interest 
at the rate of one and one-half percent (1 1/2%) per annum or the maximum rate 
permitted by law, whichever is less, and Tenant further agrees that Landlord 
shall not be liable for any damages resulting to the Tenant from such action, 
whether caused by the negligence of Landlord or otherwise.

                                       16
<PAGE>   17
        20. Landlord's Lien. In addition to any statutory lien for rent in 
Landlord's favor, Landlord shall have and Tenant hereby grants to Landlord a 
continuing security interest for all rentals and other sums of money becoming
due hereunder from Tenant, upon all goods, wares, equipment, fixtures,
furniture, inventory, accounts, contract rights, chattel paper and other
personal property of Tenant situated on the Premises, and such property shall
not be removed therefrom without the consent of Landlord until all arrearages in
rent as well as any and all other sums of money then due to Landlord hereunder
shall first have been paid and discharged. In the event of a default under this
Lease, Landlord shall have, in addition to any other remedies provided herein or
by law, all rights and remedies under the Uniform Commercial Code, including
without limitation the right to sell the property described in this Paragraph 20
at public or private sale upon five (5) days' notice to Tenant. Tenant hereby
agrees to execute such financing statements and other instruments necessary or
desirable in Landlord's discretion to perfect the security interest hereby
created. Any statutory lien for rent is not hereby waived, the express
contractual lien herein granted being in addition and supplementary thereto.
Notwithstanding the foregoing, Landlord agrees to subordinate its lien to the
lien of any unrelated third party financing secured by all of such goods, wares,
equipment, fixtures, furniture, inventory, accounts, chattel paper and other
personal property of Tenant situated on the Premises.

        21. Mortgages. Tenant acknowledges and agrees that this Lease and all 
rights of Tenant hereunder are and shall be subject and subordinate to any 
mortgage(s) and/or deed(s) of trust now or at any time hereafter constituting a 
lien or charge upon the Premises or the Improvements provided, however, that if 
the mortgagee, trustee, or holder of any such mortgage or deed of trust elects 
to have Tenant's interest in this Lease superior to any such instrument, then 
by notice to Tenant from such mortgagee, trustee, or holder, this Lease shall 
be deeded superior to such lien, whether this Lease was executed before or 
after said mortgage of deed of trust. This Paragraph 21 shall be self-operative 
and no further instruments of subordination shall be required. However, Tenant 
shall at any time hereafter on demand execute any instruments, releases or 
other documents which may be required by any mortgage for the purpose of 
confirming the subjecting and subordinating of this Lease to the lien of any 
such mortgage. To the extent that the Property is or becomes subject to any 
mortgage or other lien, Landlord shall use commercially reasonable efforts to 
provide Tenant with non-disturbance agreements.

        22. Landlord's Default. In the event that Landlord should become in 
default of any payments due on any such mortgage described in Paragraph 21 
hereof or in the payment of taxes or any other items which might become a lien 
upon the Premises and which Tenant is not obligated to pay under the terms and 
provisions of this Lease, Tenant is authorized an empowered after giving 
Landlord five (5) days prior written notice of such default and Landlord's 
failure to cure such default, to pay any such items for and on behalf of 
Landlord, and the amount of any item so paid by Tenant for or on behalf of 
Landlord, together with any interest or penalty required to be paid in 
connection therewith, shall be payable on demand by Landlord to Tenant; 
provided, however, that Tenant shall not be authorized and empowered to make 
any payment under the terms of this Paragraph 22 unless the item paid shall be 
superior to Tenant's interest hereunder. In the event that Tenant pays any 
mortgage debt in full, in accordance with this paragraph, it shall, at its 
election, be entitled to the mortgage security by assignment or subrogation.

        23. Mechanic's Liens. Tenant shall have no authority, express or 
implied, to create or place any lien or encumbrance of any kind or nature 
whatsoever upon, or in any manner to bind, the interest of Landlord in the 
Premises or to charge the rentals payable hereunder for any claim in favor of 
any person dealing with Tenant, including those who may furnish materials or 
perform


                                    17


 
<PAGE>   18
labor for any construction, alterations or repairs. Tenant covenants and agrees 
that it will pay or cause to be paid all sums legally due and payable by it on 
account of any labor performed or materials furnished in connection with any 
work performed on the Premises on which any lien is or can be validly and 
legally asserted against its leasehold interest in the Premises or the Property 
and that it will save and hold Landlord harmless from any and all loss, cost or 
expense based on or arising out of asserted claims or liens against the 
leasehold estate or against the right, title and interest of the Landlord in 
the Premises or under the terms of this Lease. Tenant at its expense shall 
procure the satisfaction or discharge of record of all such liens and 
encumbrances within thirty (30) days after the filing thereof.

        24. Sale by Landlord.
 
        (a) The term "Landlord" as used herein shall mean only the owner at the 
time in question of the Building and Property. In the event of a sale or 
conveyance of the Building, the transferor shall be and hereby is relieved and 
freed of all obligations of Landlord under this Lease accruing after such 
transfer, and it shall be deemed, without further agreement, that such 
transferee has assumed and agreed to perform and observe all obligations of 
Landlord herein during the period it is the holder of Landlord's Interest under 
this Lease. Tenant agrees to attorn to the transferee.

        (b) Tenant shall look only to Landlord's estate in the Property for the 
satisfaction of Tenant's remedies for the collection of a judgment (or other 
judicial process) requiring the payment of money by Landlord in the event of 
any default by Landlord hereunder, and no other property or assets of Landlord 
or its board of directors and officers, or investment manager, disclosed or 
undisclosed, as the case may be, or any employees or agents of Landlord or the 
investment manager shall be subject to levy, execution or other enforcement 
procedure for the satisfaction of Tenant's remedies under or with respect to 
this Lease, the relationship of Landlord and Tenant hereunder or Tenant's use 
or occupancy of the Premises.

        25. Notices.

        (a) Any notice or demand, consent, approval or disapproval, or 
statement (collectively, "Notices") required or permitted to be given by the 
terms and provisions of this Lease, either by Landlord to Tenant or by Tenant 
to Landlord, shall be in writing and shall be personally delivered with receipt 
acknowledged or sent by United States mail postage prepaid as registered or 
certified mail, return receipt requested addressed as follows (or to such other 
address within the continental United States as such addressee may specify from 
time to time by Notice delivered in accordance herewith):

<TABLE>
<CAPTION>
        <S>                                                    <C>
        If to Landlord's Property Manager, to:                If to Landlord, to:

        State of Wisconsin Investment Board                    State of Wisconsin Investment Board
        c/o Trammell Crow Realty Associates, Inc.              c/o Jones Lang Wootton Realty Advisors
        5955 T.G. Lee Boulevard                                101 East 52nd Street 
        Suite 340                                              New York, New York 10022
        Orlando, Florida 32822                                 Attn:  S.J. Furnary
        Attn:  Elwood B. Coley, Jr.

        If to Tenant, to:                                      With a copy to:

        ECC International Corp.                                ECC International Corp.
        175 Stratford Avenue                                   2900 Titan Row, Suite 124
        Wayne, PA 19087                                        Orlando, Florida 32809
        Attn:  George Murphy                                   Attn:  Jerry Robbins

</TABLE>
        
                                    18
                                
<PAGE>   19
        (b) All rent and other payments required to be made by Tenant to 
Landlord hereunder shall be payable to Landlord at the address hereinabove set 
forth or at such other address as Landlord may specify from time to time by 
Notice delivered in accordance herewith. Tenant's obligation to pay rent and 
any other amounts to Landlord under the terms of this Lease shall not be deemed 
satisfied until such rent and other amounts have been actually received by
Landlord.

        (c) Any notice or document required or permitted to be delivered 
hereunder shall be deemed given, as of the date of delivery or, in the event of 
failure to deliver by reason of changed address of which no Notice was given or 
refusal to accept delivery, shall be deemed given as of the date of such 
failure as indicated by affidavit or on the return receipt or by notice of the 
postal service, as the case may be.

        (d) If and when included within the term "Landlord", as used in this 
instrument, there are more than one person, firm or corporation, all shall 
jointly arrange among themselves for their joint execution of such a Notice 
specifying some individual at some specific address for the receipt of Notices 
and payments to Landlord. If and when included within the term "Tenant", as 
used in this instrument, there are more than one person, firm or corporation, 
all shall jointly arrange among themselves to their joint execution of such a 
Notice specifying some individual at some specific address within the 
continental United States for the receipt of Notices and payments to Tenant. 
All parties included within the terms "Landlord" and "Tenant", respectively, 
shall be bound by Notices given in accordance with the provisions of this 
paragraph to the same effects as if each had received such Notice.

        26. Brokerage. Tenant represents and warrants that it has dealt with no 
broker, agent, or other person in connection with this transaction other than 
Trammell Crow Realty Services, Inc. and Castle Commercial Realty, and that no 
broker, agent, or other person other than Trammell Crow Realty Services, Inc. 
and Castle Commercial Realty, brought about this transaction and Tenant agrees 
to indemnify and hold Landlord and Landlord's agent and Landlord's property 
manager harmless from and against any claims by any other broker, agent, or 
other person claiming a commission or other form of compensation by virtue of 
having dealt with Tenant with regard to this leasing transaction, and for all 
costs, expenses and liabilities in connection therewith, including, without 
limitation, attorneys' fees and expenses.

        27. Hazardous Material. Landlord and Tenant agree as follows with 
respect to the existence or use of hazardous materials and toxic substances on 
or about the Premises:

        (a) Tenant shall not cause or permit any hazardous materials or toxic 
substances to be brought upon, kept or used in or about the Premises by Tenant, 
its agents, employees, contractors or invitees, without the prior written 
consent of Landlord, which consent may be granted or withheld in Landlord's 
sole and absolute discretion. The items attached hereto as Exhibit "F" are 
hereby approved by Landlord for Tenant's use. Tenant's request for Landlord's 
consent shall demonstrate to Landlord's satisfaction that such hazardous 
materials or toxic substances are necessary to the business of Tenant and will 
be transported, used, kept and stored in a manner that complies with all laws 
relating to any such hazardous materials or such toxic substances so brought 
upon or used or kept in or about the Premises. If Landlord grants its consent, 
Tenant shall transport, use, keep and store such hazardous materials or toxic 
substances in a manner that complies with all laws relating to such hazardous 
materials or toxic substances so brought upon or used or kept in or about the 
Premises in accordance with any procedures described in Tenant's request for 
consent. Landlord's consent to any such bringing upon or use of hazardous 
materials or toxic substances upon the Premises shall not be deemed an 
acknowledgement that Tenant's method of transport, use or disposal is safe or in

                                       19

<PAGE>   20
compliance with law and it shall be Tenant's sole obligation (subject to 
Landlord's rights hereunder) to ensure that such method of transport, use and 
disposal is safe and in compliance with law.

        To the best of Landlord's knowledge, Landlord warrants that as of the
execution of this Lease, the Property is clear of hazardous materials or toxic
substances, except as may be present in accordance with applicable laws and in
accordance with the ordinary course of Tenant's business, if presence of
hazardous materials or toxic substances on the Property caused or permitted by
Tenant or any person claiming by, through or under Tenant, including any
employee or agent of Tenant, results in contamination of the Property, or if
contamination of the Property by hazardous materials or toxic substances
otherwise occurs for which Tenant is legally liable to Landlord for damage
resulting therefrom, then Tenant shall indemnify, defend and hold Landlord
harmless from any and all claims, damages, costs, liabilities and losses,
including without limitation, diminution in value of the Property, damages for
the loss or restriction on use of rentable or usable space or any amenity of the
Property, damages arising from any adverse impact on marketing of space in the
Building, and sums paid in settlement of claims, actual attorneys' fees and
expert fees, which arise during or after the term of this Lease as a result of
such contamination. This indemnification of Landlord by Tenant also includes,
without limitation, costs incurred in connection with any investigation of site
conditions, including regular inspections, or any clean-up, remedial, removal or
restoration work required by any federal, state or local governmental agency or
political subdivision or which Landlord otherwise deems necessary to remediate
and remove any such hazardous waste and any contaminated materials, soil or
ground water and to protect any persons or property from injury by reason
thereof if and only if contamination was caused or permitted by any person
claiming by, through or under Tenant including, without limitation, any
employee, contractor, invitee or agent of Tenant. The indemnity and hold
harmless obligations of Tenant under this Paragraph shall survive any
termination of this Lease. Without limiting the foregoing, if any contamination
of the Property is caused or permitted by Tenant or any person claiming by,
through or under Tenant, including any employee or agent of Tenant, Tenant shall
promptly take all actions at its sole expense as are necessary to return the
Property to the condition existing prior to the introduction of any such
hazardous materials or toxic substances to the Property; provided that,
Landlord's approval of such actions shall first be obtained, which approval
shall not be unreasonably withheld so long as such actions, in Landlord's sole
and absolute discretion, would not potentially have any material adverse
long-term or short-term effect on the Property or Landlord, its agents and
employees.

        (b) Landlord shall have the right, at any time, to cause testing wells 
to be installed on or about the Premises, and may at its option cause the 
ground water to be tested to detect the presence of hazardous materials or 
toxic substances at least once every twelve (12) months during the term of this 
Lease by the use of such tests as are then customarily used for such purposes. 
If Tenant so requests, Landlord shall supply Tenant with copies of such test 
results. The cost of such tests and of the maintenance, repair and replacement 
of such wells shall be fully paid for by Landlord unless contamination of the 
Premises with hazardous materials or toxic substances has occurred and was 
permitted by Tenant or any person claiming by, through or under Tenant 
including, without limitation, any employee, contractor, invitee or agent of 
Tenant, in which event, the Tenant shall pay for such audit in addition to all 
other obligations hereunder, within ten (10) days after receiving a statement 
of charges from Landlord. If Landlord tests any area of the Property not leased 
to any Tenant, Tenant shall pay its Proportionate Share of such tests, 
provided, if any contamination is so detected and it is determined that such 
contamination is caused or 

                                       20
<PAGE>   21
permitted by Tenant or any person claiming by, through or under Tenant, 
including any employee or agent of Tenant, Tenant shall pay the entire cost of 
such tests. Tenant shall have the right at any time during the term of this 
Lease to conduct its own test of the ground water underlying the Premises by 
using such wells so long as each of the following conditions are satisfied: (i) 
such tests are conducted by Tenant at its own expense; (ii) it repairs any 
damage to such wells caused by such tests; and (iii) it delivers copies of the 
results of such tests to Landlord.

        (c) Landlord and Landlord's agents shall have the right to inspect the 
Premises for purposes of ascertaining Tenant's compliance with this Paragraph 
27. The cost of such inspections shall be reimbursed to Landlord by Tenant. In 
the event of a spill or mishandling of hazardous materials or toxic substances, 
Tenant shall immediately inform Landlord verbally and in writing. Such notice 
shall identify the hazardous materials or toxic substances involved and the 
emergency procedures taken.

        (d) It shall not be unreasonable for Landlord to withhold its consent 
to any proposed assignment or sublease if (i) the proposed assignee's or 
sublessee's anticipated use of the Premises involves the generation, 
treatment or disposal of hazardous materials or toxic substances; (ii) the 
proposed assignee or sublessee has been required by any prior landlord, lender 
or governmental authority to take remedial action in connection with hazardous 
materials, or toxic substances contaminating a property if the contamination 
resulted from such assignee's or sublessee's actions or use of the property in 
question; or (iii) the proposed assignee is subject to an enforcement order 
issued by any governmental authority in connection with the use, disposal or 
storage of any hazardous materials or toxic substances.

        (e) As used herein, the terms "hazardous materials and/or toxic 
substances" mean (i) any hazardous or toxic substance, material or waste which 
is or becomes regulated by any local, state or federal governments or special 
districts, (ii) any substance or material which is designated as a "hazardous 
substance" pursuant to Section 1311 of the Federal Water Pollution Control Act 
(33 U.S.C. Section 1317), (iii) any substance or material which is defined as a 
"hazardous waste" pursuant to Section 1004 of the Federal Resource Conservation 
and Recovery Act, 42 U.S.C. Section 6901 et seq. (42 U.S.C. Section 6903), or 
(iv) any substance or material which is defined as a "hazardous substance" 
pursuant to Section 101 of the Comprehensive Environmental Response, 
Compensation and Liability Act, 42 U.S.C. Section 9601 et seq. (42 U.S.C. 
Section 9601). References herein to specific statutes or laws shall also be 
references to any applicable successor statutes or laws.

        (f) If Tenant presently uses in its business any materials which may be
hazardous materials or toxic substances as defined in this Paragraph 27, Tenant
shall prior to execution of this Lease deliver to Landlord, (i) a list of all
such hazardous materials and toxic substances (a copy of which list is attached
hereto as Exhibit E), (ii) a plan for use, handling, storage and disposal of
hazardous materials and toxic substances, (iii) the name, address, telephone
number and qualifications of a licensed company that will handle emergency
clean-up for Tenant, and (iv) a written contingency plan for any emergency
involving said hazardous materials and toxic substances. During the term of this
Lease, Lessee shall deliver to Landlord all reports required by all regulatory
agencies governing the use, handling, storage and disposal of hazardous
materials or toxic substances.

        (g) Landlord agrees that Tenant may use the hazardous materials and 
toxic substances enumerated on Exhibit E, subject to the terms of this Lease. 
Tenant shall immediately notify Landlord of any other materials which may be 
used by Tenant or stored by Tenant on or about the Premises which may be 
hazardous or toxic, and shall obtain Landlord's written consent thereto, which 
consent may be granted or withheld in Landlord's sole and absolute discretion, 
prior to such use or storage.

        (h) Any increase in the premiums for necessary insurance on the 
Premises which arises from Tenant's use and/or storage of these materials shall 
be solely at Tenant's expense. Tenant shall procure and maintain at its sole 
expense such additional

                                      21

<PAGE>   22
insurance as may be necessary to comply with any requirement of any federal, 
state or local governmental agency or special district with jurisdiction.

        (i) It is the intent of the parties hereto that the provisions of this 
Paragraph 27 regarding the use and handling of hazardous materials and toxic 
substances shall also apply to Tenant's storage upon the Premises of any 
substances, including, but not limited to, gasoline and diesel fuels in above 
or below ground storage tanks.

        28. No Recordation of Lease. Tenant shall not record this Lease or any 
memorandum hereof.

        29. Miscellaneous.

        (a) Words of any gender used in this Lease shall be held and construed 
to include any other gender, and words in the singular number shall be held to 
include the plural, unless the context otherwise requires.

        (b) The terms, provisions and covenants and conditions contained in 
this Lease shall apply to, inure to the benefit of, and be binding upon, the 
parties hereto and upon their respective heirs, legal representatives, 
successors and permitted assigns, except as otherwise herein expressly 
provided. Landlord shall have the right to assign any of its rights and 
obligations under this Lease. Each party agrees to furnish to the other, 
promptly upon demand, a corporate resolution, proof of due authorization by 
partners, or other appropriate documentation evidencing the due authorization 
of such party to enter into this Lease.

        (c) The captions inserted in this Lease are for convenience only and in 
no way define, limit or otherwise describe the scope or intent of this Lease, 
or any provision hereof, or in any way effect the interpretation of this Lease.

        (d) Tenant agrees from time to time within ten (10) days after request 
of Landlord, to deliver to Landlord, or Landlord's designee, an estoppel 
certificate stating that this Lease is in full force and effect, the date to 
which rent has been paid, the unexpired term of this Lease and such other 
matters pertaining to this Lease as may be reasonably required by Landlord. It 
is understood and agreed that Tenant's obligation to furnish such estoppel 
certificates in a timely fashion is a material inducement for Landlord's 
execution of this Lease, that any such statement delivered pursuant hereto 
shall be deemed a representation and warranty to be relied upon by the party 
requesting the certificate and by others with whom such party may be dealing, 
regardless of independent investigation, and that Tenant shall be liable for 
all loss, cost or expense resulting from the failure of any sale or funding of 
any loan caused by a material misstatement contained in such estoppel 
certificate. In the event Tenant shall fail to return a fully executed copy of 
such certificate to Landlord within the foregoing twenty (20) day period, then 
Tenant shall be deemed to have approved and confirmed all of the terms, 
certifications and representations contained in such certificate and such 
certificate as signed by Landlord shall be fully binding on Tenant.

        (e) This Lease may not be altered, changed or amended except by an 
instrument in writing signed by both parties hereto.

        (f) All obligations of Tenant hereunder not fully performed as of the 
expiration or earlier termination of the term of this Lease shall survive the 
expiration or earlier termination of the term hereof, including without 
limitation all payment obligations with respect to taxes and insurance and all 
obligations concerning the condition of the Premises. Upon the expiration or 
earlier termination of the term hereof, and prior to Tenant vacating the 
Premises, Tenant shall pay to Landlord any amount reasonably estimated by 
Landlord as necessary to put the Premises, including without limitation all 
heating and air conditioning systems and equipment therein, in good condition 
and repair. All such amounts shall be used and held by Landlord for payment of 
such obligations of Tenant hereunder, with Tenant being liable for any 
additional costs therefor upon demand by Landlord, or with any

                                       22

<PAGE>   23
excess to be returned to Tenant after all such obligations have been determined 
and satisfied, as the case may be. Any security deposit held by Landlord shall 
be credited against the amount payable by Tenant under this Paragraph 29(f).

        (g) If any clause or provision of this Lease is illegal, invalid or 
unenforceable under present or future laws effective during the term of this 
Lease, then and in that event, it is the intention of the parties hereto that 
the remainder of this Lease shall not be effected thereby, and it is also the 
intention of the parties to this Lease that in lieu of each clause or provision 
of this Lease that is illegal, invalid or unenforceable, there be added as a 
part of this Lease contract a clause or provision as similar in terms to such 
illegal, invalid or unenforceable clause or provision as may be possible and be 
legal, valid and enforceable.

        (h) Because the Premises are on the open market and are presently being 
shown, this Lease shall be treated as an offer by Tenant, and shall not be 
valid or binding unless and until accepted by Landlord in writing and a fully 
executed copy delivered to both parties hereto.

        (i) All references in this Lease to "the date hereof" or similar 
references shall be deemed to refer to the date first written above.

        (j) If either party hereto is successful in enforcing against the other 
any legal or equitable remedy for a breach of any of the provisions of this 
Lease, the successful party shall be entitled to recover its reasonable 
expenses and attorney's fees as a part of the judgment or decree.

        (k) The duties and obligations of Tenant herein shall be binding upon 
all or any of them. The duties and obligations of Tenant shall run and extend 
not only to the benefit of the Landlord, as named herein, but to the following, 
at the option of the following or any of them (i) any person by, through or 
under which Landlord derives the right to lease the Premises; (ii) the owner of 
the Premises; and (iii) holders of mortgage or rent assignment interests in the 
Premises, as their respective interests may appear; provided, however, nothing 
contained herein shall be construed to obligate Tenant to pay rent to any 
person other than the Landlord until such time as Tenant has been given written 
notice of either an exercise of a rent assignment or the succession of some 
other party to the interest of Landlord.

        (l) If Landlord's consent or approval is required pursuant to any 
provision hereof and Tenant shall request Landlord's consent or approval and 
Landlord shall fail or refuse to give such consent or approval, Tenant shall 
not be entitled to any damages for any withholding by Landlord of its consent 
or approval, it being intended that Tenant's sole remedy shall be an action for 
specific performance or injunction, and that such remedy shall be available 
only in those cases where Landlord has expressly agreed in writing not to 
unreasonably withhold its consent or approval or where as a matter of law 
Landlord may not unreasonably withhold its consent or approval.

                                       23

<PAGE>   24
        30. Additional Provisions. See Additional Provisions Paragraph(s) 31 
through 37, attached hereto and made part hereof as if fully incorporated 
herein and when in conflict with the printed portion of this Lease, said 
Additional Provisions shall prevail.

EXECUTED BY LANDLORD, this 26th day of January, 1995.

ATTEST/WITNESS                   STATE OF WISCONSIN INVESTMENT BOARD
                                             
                                 By: Jones Lang Wootton Realty Advisors,
                                     Its Agent

1) /s/ [Signature]               By: /s/ [Signature]
   ----------------------------      ------------------------------

2) /s/ [Signature]          
   ---------------------------- 


EXECUTED BY TENANT, this 30th day of January, 1995.

ATTEST/WITNESS                   ECC INTERNATIONAL CORP., a Delaware Corporation

1) /s/ [Signature]               By: /s/ [Signature]
   ----------------------------      ---------------------------------

2) /s/ Joe D. Sellers            Title: V.P. Vending Products Division
   ----------------------------         ------------------------------

                                       24

<PAGE>   25
                             ADDITIONAL PROVISIONS

        31. Landlord shall construct within the Premises the improvements 
contemplated by the Preliminary Specifications attached hereto as Exhibit "C" 
and made a part hereof ("Landlord's Work"). Landlord shall construct Landlord's 
Work in a good and workmanlike manner, in accordance with all applicable laws, 
regulation, codes and ordinances, and in accordance with the Work Agreement 
attached hereto as Exhibit "D" and made a part hereof. Landlord shall 
contribute and pay for up to a total of $248,433.00 toward the cost of 
Landlord's Work ("Landlord's Contribution"), and Tenant shall pay to Landlord 
all costs associated with Landlord's Work in excess of Landlord's Contribution 
within ten (10) days after an invoice from Landlord.

        32. The parties agree that one-twelfth (1/12) of Tenant's Proportionate 
Share of Taxes described in Paragraph 4 hereof, at the Premises described in 
Exhibit "A" hereto, is initially estimated to be TWO THOUSAND SIX HUNDRED 
FIFTY-NINE AND 07/100 DOLLARS ($2,659.07) payable as Additional Rent on a 
monthly basis subject to adjustment for end-of-the-year reconciliations as 
provided in Paragraph 4.

        33. The parties agree that one-twelfth (1/12) of Tenant's Proportionate 
Share of common area maintenance expenses described in Paragraph 6 hereof, at 
the Premises described in Exhibit "A" hereto, is initially estimated to be 
SEVEN HUNDRED EIGHTY-FIVE AND 63/100 DOLLARS ($785.63) payable as Additional 
Rent on a monthly basis subject to adjustment for end-of-the-year 
reconciliations as provided in Paragraph 6.

        34. If any holder of any mortgage to which this Lease is subject and
subordinate or any purchaser at a foreclosure sale shall succeed to the rights
of Landlord under this Lease, whether through possession or foreclosure action
or delivery of a new lease or deed, then at the request of such party so
succeeding to Landlord's rights (a "Successor Landlord"), Tenant shall attorn to
and recognize Successor Landlord as Landlord. This Paragraph 34 shall be
self-operative and no further instruments of attornment shall be required.
However, Tenant shall at any time hereafter on demand execute any instrument
that Landlord or Successor Landlord may reasonably request to evidence such
attornment. Upon such attornment this Lease shall continue in full force and
effect as a direct lease between Successor Landlord and Tenant upon all of the
terms, conditions and covenants set forth in this Lease

                                     25

<PAGE>   26
except that Successor Landlord shall not (a) be liable for any previous act, 
omission or default of Landlord under this Lease; (b) be responsible for any 
liability which shall have accrued to Tenant against Landlord; (c) be bound by 
any covenant to undertake or complete any improvements to the Premises or the 
Building or to pay to Tenant any sum, or grant to Tenant any credit, towards 
the cost of preparing, furnishing or moving into the Premises or any portion 
thereof; or (d) be bound by any previous modification, amendment, surrender or 
cancellation of this Lease or by any previous prepayment of more than one 
month's Base Rental or Additional Rent, unless such modification amendment, 
surrender, cancellation or prepayment shall have been expressly approved in 
writing by Superior Landlord.

        35. Radon Gas: Tenant understands and acknowledges that radon is a 
naturally occurring radioactive gas that, when it has accumulated in a building 
in sufficient quantities, may present health risks to persons who are exposed 
to it over time. Levels of radon that exceed federal and state guidelines have 
been found in buildings in Florida. Additional information regarding radon and 
radon testing may be obtained from your county public health unit.

        36. Notwithstanding the provisions of Paragraph 2(a), base monthly 
rental shall increase as per the following schedule:

<TABLE>
            <S>                   <C>
            Months 1-36           $20,547.00 per month plus Florida state sales tax.

            Months 37-84          $23,872.00 per month plus Florida state sales tax.

</TABLE>


                                        26
<PAGE>   27
                                 EXHIBIT "A"

        Approximately 72,520 square feet as outlined in red in Exhibit "B" 
attached hereto and made part thereof, out of a larger building situated on a 
tract of ground, the legal description of which is:

        From the SW corner of the SE 1/4 of Section 28, Township 23 South, Range
        29 East, Orange County, Florida, run N 89 degrees 48 minutes 17 seconds
        East 209.52 feet along the S boundary of said SE 1/4; thence run North
        00 degrees 11 minutes 43 seconds West 957.68 feet to the NW corner of
        ORLANDO CENTRAL PARK NO. 42, as recorded in Plat Book 9, Page 21, Public
        Records of Orange County, Florida; thence run South 89 degrees 48
        minutes 17 seconds West 605.89 feet along the South boundary of ORLANDO
        CENTRAL PARK NO. 46, as recorded in Plat Book 11, Page 60, Public
        Records of Orange County, Florida, to the beginning of a tangent curve
        concave Northeasterly and having a radius of 405.00 feet; thence run
        Northwesterly 191.13 feet along the arc of said curve and said S
        boundary through a central of 27 degrees 02 minutes 21 seconds to the
        Southwest corner of said ORLANDO CENTRAL PARK NO. 46; thence run North
        00 degrees 11 minutes 43 seconds West 68.97 feet along the West boundary
        of said ORLANDO CENTRAL PARK NO. 46 to the most Southerly corner of
        ORLANDO CENTRAL PARK NO. 51, as recorded in Plat Book 14, Page 68,
        Public Records of Orange County, Florida, said most Southerly corner
        being on a non-tangent curve concave Northeasterly and having a radius
        of 345.00 feet; thence from a tangent bearing of North 57 degrees 56
        minutes 32 seconds West, run Northwesterly 135.05 feet along the arc of
        said curve and the Southwesterly boundary of said ORLANDO CENTRAL PARK
        NO. 51, through a central angle of 22 degrees 25 minutes 45 seconds to
        the end of said curve; thence run North 35 degrees 30 minutes 47 seconds
        West 402.36 feet along said Southwesterly boundary to the SW corner of
        said ORLANDO CENTRAL PARK NO. 51; thence run South 00 degrees 11 minutes
        43 seconds East 103.79 feet; thence run North 35 degrees 30 minutes 47
        seconds West 103.79 feet for the POINT OF BEGINNING: thence continue
        North 35 degrees 30 minutes 47 seconds West 149.32 feet to the beginning
        of a tangent curve concave Southwesterly having a radius of 970.00 feet
        and an intersection angle of 10 degrees 00 minutes 00 seconds; thence
        run Northwesterly 169.30 feet along the arc of said curve to the end of
        said curve; thence run North 45 degrees 30 minutes 47 seconds West
        1257.96 feet to the beginning of a tangent curve concave Northeasterly,
        having a radius of 230.00 feet and an intersection angle of 86 degrees
        54 minutes 59 seconds; thence run Northwesterly and Northerly 348.91
        feet on the arc of said curve to the end of said curve; thence run South
        41 degrees 24 minutes 12 seconds West 589.05 feet; thence run South 45
        degrees 30 minutes 47 seconds East 2155.09 feet; thence run North 12
        degrees 01 minutes 43 seconds West 198.98 feet; thence run North 00
        degrees 11 minutes 43 seconds West 309.59 feet to the POINT OF
        BEGINNING.

        Containing 16.5797 acres, more or less.

        Subject to easements.

<PAGE>   28
                                  EXHIBIT "B"

                   Approximately 72,520 Rentable Square Feet

                           2900 Titan Row, Suite 142

                             Orlando, Florida 32809



                            [Schematic of property]

<PAGE>   29
ECC International
12/29/94                          EXHIBIT "C"

1) General Contractor
<TABLE>
<S>                                       <C>

Permit:                                      $2,344
Cut and patch allowance:                       $900
Plumbing-LBR & MTL:                          $8,779  
2 prefab shower units:                       $3,700
1 eye wash unit:                             $1,650
HVAC testing area 7,200 sf-22.5 tons:       $18,787
HVAC assembly area 36,000 sf-90 tons:       $74,250
Fire alarm for duct detector:                $6,899
Electrical-1200 amps total                  $60,000
Brkrm/office/bthroom construction:          $22,150
Compactor ramp                               $1,500
Paint existing office areas:                 $5,010
Replace flooring in office area:             $6,788
Trash:                                         $200
Supervision:                                 $3,800
O&P                                         $21,676

SUB-TOTAL                                  $238,433

</TABLE>

2) Professional Services

<TABLE>
<S>                                       <C>

Architectural                                $3,000
Engineering                                  $5,000
Roof Engineer                                $2,000

GRAND TOTAL                                $248,433

</TABLE>
<PAGE>   30
                        EXHIBIT "C" CONT.

NOTES:

        Electrical scope of work to include:

                * Wire 3 7.5 ton split systems in testing area
                * Wire 9 10 ton split systems in assembly
                * Wire 1 5 ton split system over office break area.
                * Wire 20 2 X 4 lay in light fixtures
                * 2 exit lights
                * Wire/hookup 1 30 gallon water heater
                * Bringing in 2-600 amp services with direct feeders and
                  dedicating 400 amps to HVAC system
                * There are no hookups or wiring of desk mounted tools,
                  equipment or additional lighting included in this proposal
                  other than noted above.

        Plumbing scope of work:

                * 5 Fixtures proposed in men's and women's each 10 total
                * 3 sinks proposed in men's and women's each 6 total
                * 1 floor drain in men's and women's 2-total
                * Code will require 3 drinking fountains in the warehouse area
                  we have not included a cost for this and recommend using
                  bottled water.

        HVAC scope of work to include:

                * The lack of barriers in the assembly and testing areas will
                  cause the HVAC equipment to run more continuously than a
                  balanced space.
                * The areas directly behind the designated conditioned areas
                  may be 10 degrees warmer than the conditioned areas during
                  summertime conditions.
                * The HVAC equipment is proposed without heat strips, the
                  equipment will cool only.
                * It appears that roof deck insulation will not be required,
                  however this will have to be confirmed with the county.

        Exclusions:

                Telephone, Data, or computer cabling.
                It appears that impact fees will be assessed. These fees
                are not included and will be Tenant's responsibility.
                Warehouse floor stripping of sealing.
                Air lines - lbr and mtl.
                Relocation or staging expenses.
                No fire protection upgrades.

<PAGE>   31
                                  EXHIBIT "D"

                                 Work Agreement

        1. Drawings, Plans & Specifications

                (a) Landlord shall cause Preliminary Space Plans to be prepared 
and delivered to Tenant.

                (b) After receipt of Tenant's approval of the Preliminary Space 
Plans, Landlord shall cause the following to be prepared and delivered to
Tenant:

                        (i)  architectural drawings for Landlord's Work 
sufficient to obtain a building permit from the Orange County Building 
Department (which architectural drawings shall include a reflected ceiling 
plan); and

                        (ii) materials, colors and designs of wall coverings 
and finishes.

                (c) The plans, specifications and information described in 
paragraphs 1(a) and (b) above are hereinafter collectively referred to as 
"Landlord's Drawings." The cost of preparation and delivery of Landlord's 
drawings shall be considered part of Landlord's contribution pursuant to 
Paragraph 31.

        2. Landlord's Work

                As contemplated by Paragraph 31 of the Lease, Landlord shall 
construct or cause to be constructed all improvements provided for in
Landlord's Drawings (i.e., Landlord's Work). The cost of Landlord's Work, less
Landlord's Contribution, shall be paid by Tenant to Landlord (as Additional
Rent) within ten (10) days after Tenant's receipt of an invoice therefor.

        3. Fees

                Tenant shall pay to Landlord the cost of Landlord's work (less 
Landlord's Contribution) plus, as Additional Rent, an additional (a) eight 
percent (8%) for general contractors Overhead and Profit, (b) $27.50 per hour 
for each hour (or portion of an hour) of supervision by general contractor, and 
(c) six percent (6%) for construction management. All such fees shall be paid 
by Tenant to Landlord as and when billed by Landlord to Tenant and within ten 
(10) days after Tenant's receipt of each such bill. All payments to be made by 
Tenant to Landlord under this Work Agreement shall be payable by Tenant and 
collectible by Landlord in the same manner and to the same extent as the 
payment of Base Rental under the Lease, regardless of whether the term of the 
Lease has then commenced, and any default by Tenant in the payment of any 
amounts due under this Work Agreement shall entitle Landlord to the same rights 
and remedies to which Landlord is entitled for default by Tenant in the payment 
of Base Rental under the lease.

        4. Tenant's Delay

                (a) If Landlord shall be delayed in substantially completing 
any work it is required to perform hereunder as a result of any act, neglect, 
failure or omission of Tenant, its agents, employees or contractors, including 
without limitation any of the following, such delay shall be deemed a "Tenant
Delay":

                        (i)  Tenant's failure to approve Landlord's Drawings in 
the time period provided in paragraph 5 hereof; or

                        (ii) Tenant's delays in submitting or approving any 
other drawings, plans or

<PAGE>   32
specifications, or in supplying information; or

                        (iii) Tenant's request for materials, finishes or
installations (other than those included in Building Standard Work); or

                        (iv)  Tenant's changes in drawings, plans or
specifications submitted to or prepared by Landlord (including any Revisions);
or

                        (v)   the entering onto the Premises by Tenant, its
agents, employees or contractors to perform any work on the Premises, to
inspect the Premises or otherwise; or

                        (vi)  any delays of contractors or subcontractors
resulting from Tenant's failure to timely approve cost estimates or to make
any payments required hereunder.

                        (vii) any other Tenant delay caused by failure to
comply with the provisions of this Work Agreement.

                (b)  Tenant shall pay to Landlord a sum equal to any
additional cost to Landlord in performing and completing Landlord's Work
resulting from any Tenant Delay. Any such sums shall be in addition to any other
sums payable by Tenant hereunder and shall be paid to Landlord within ten (10)
days after Landlord bills Tenant therefor.

        5. Submissions

                Unless otherwise provided herein, Tenant shall, within five (5)
days after Landlord submits any drawings, plans or other material to Tenant for
Tenant's approval, respond in writing, either (i) approving such drawings, plans
or materials, or (ii) requesting Landlord to make specific changes therein.
All of Tenant's requested changes shall be subject to Landlord's prior written
approval, which shall not be unreasonably withheld, provided, however, that
Landlord shall have no obligation to make any changes requested by Tenant unless
Tenant's request for changes complies with the provisions of Paragraph 6(b)
below. Unless otherwise provided herein, Tenant's failure to respond within the
time period set forth in the preceding sentence shall be deemed approval of
Landlord's submission.

        6. Revisions

                (a) Tenant shall have the right to make changes from time to
time in Landlord's Drawings by submitting to Landlord revised plans and
specifications (herein called the "Revisions"). All Revisions shall be subject
to Landlord's prior written approval, which shall not be unreasonably withheld.
Without limiting the generality of the foregoing, no Revisions will be approved
unless (i) all changes to and modifications from Landlord's Drawings are circled
or highlighted as per standard industry practices and (ii) said Revisions
conform with the requirements of paragraph 6(b).

                (b) Landlord shall not be required to perform, and Tenant
shall not request, work which would (i) require changes to structural components
of the Building or the exterior design of the Building, (ii) require any
material modification to the Building's mechanical installations or other
Building installations outside the Premises, (iii) require installation
(including quality of materials) which are below the quality of building
standard installations, (iv) not comply with all applicable laws, rules,
regulations and requirements of any governmental department having jurisdiction
over the construction of the Building and/or the Premises, (v) be incompatible
with the Building plans filed with the Department of Buildings or any other
department or agency of the City of Orlando or the County of Orange or with the
occupancy of the Building as a first-class warehouse building, or (vi) delay the
completion of any work being performed in the Building or any part thereof
(other than the Premises).

                (c) Any changes required by any governmental department before 
completion of Landlord's Work affecting the construction of the Building and/or 
the Premises shall be performed by Landlord in completing the Premises, shall 
not be deemed to be a violation of the 

<PAGE>   33
Preliminary Space Plan or the Work Agreement and shall be deemed automatically 
accepted and approved by Tenant. Tenant shall reimburse Landlord within five 
(5) days after demand by Landlord for any cost arising out of the changes 
described in this Paragraph 6(c).

                (d) Any changes required by any governmental department after 
completion of the Premises affecting the Premises shall be performed by Tenant 
at Tenant's sole cost and expense by contractors approved by Landlord, which 
approval may be granted or withheld in Landlord's sole discretion.
<PAGE>   34







                            [Schematic of property]





<PAGE>   1
                                                                  EXHIBIT 10.20

                            DATED 1st December 1995


                       G J KING & SON (HOME FARM) LIMITED

                                     - to -

                             ECC SIMULATION LIMITED

                                    - and -

                             ECC INTERNATIONAL CORP



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

                                   AGREEMENT

                                - relating to -


                        Unit 1 Home Farm Business Centre
                       Lewes Road  Brighton  East Sussex

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



                       [SPEECHLY BIRCHAM SOLICITORS LOGO]

<PAGE>   2
THIS AGREEMENT dated the 1st December, 1995

BETWEEN:

(1)  G J KING & SON (HOME FARM) LIMITED whose registered office is situate at
     G J King Business Centre Reeds Lane Sayers Common West Sussex; and

(2)  ECC SIMULATION LIMITED whose registered office is situate at Kingston
     Wharf Brighton Road Shoreham by Sea West Sussex

(3)  ECC INTERNATIONAL CORP a company incorporated in the State of Delaware and
     whose principal place of business is at 175 Strafford Avenue Wayne PA
     19087-3377 USA

     1.  DEFINITIONS

1.1  In this agreement the following terms shall have the following meanings

     1.1.1      "Completion Date"       means not later than five Working Days 
                                        from the latest of (1) 25th March 1998
                                        and (2) the date twenty Working Days
                                        after the date the Landlord notifies
                                        the Tenant that the Premises are vacant
                                        and (3) if a Repairs Notice is served 
                                        by the Tenant pursuant to clause 4.2
                                        hereof ten Working Days after the date
                                        the Landlord notifies the Tenant of
                                        completion of the works pursuant to
                                        clause 4.4 hereof

     1.1.2      "Existing Unit 1 Lease" means a lease of the Premises dated
                                        25th March 1994 made between (1) the
                                        Landlord (2) Systems Support 
                                        Corporation International Limited and
                                        (3) Carterhouse Group PLC which lease


                                      -1-
<PAGE>   3
                                contains inter alia an agreement excluding the 
                                provisions of Sections 24 to 28 (inclusive) of 
                                the Landlord and Tenant Act 1954 as authorised 
                                by a Court Order obtained prior to the grant 
                                thereof and an option for the Landlord to 
                                determine the lease on 24th March 1998 by 
                                giving notice to this effect to the tenant at 
                                any time before 25th March 1997

        1.1.3   "Initial Rent"  means the sum of ONE HUNDRED THOUSAND POUNDS 
                                (Pound Sterling 100,000) a year exclusive of 
                                Value Added Tax

        1.1.4   "Landlord"      means G J King & Son (Home Farm) Limited or 
                                such other person as shall from time to time 
                                be or become the headlessee estate owner of 
                                the Premises

        1.1.5   "Lease"         means the Lease of the Premises to be granted 
                                by the Landlord to the Tenant pursuant to this 
                                agreement if the Option is exercised by the 
                                Tenant such lease to be in the form of the 
                                draft Lease attached hereto

        1.1.6   "Option"        means the option to take the Lease of the 
                                Premises at the Initial Rent (subject to 
                                upward review) which is exercisable by the 
                                Tenant in the manner described in clause 3

                                      -2-
<PAGE>   4
        1.1.7   "Option Period"                 means the period from the date 
                                                of this agreement until 25th
                                                February 1997

        1.1.8   "Premises"                      means the land with the 
                                                building erected thereon or on 
                                                some part thereof known as 
                                                Unit 1 Home Farm Business 
                                                Centre Home Farm Road Brighton
                                                East Sussex as the same are 
                                                more particularly described in 
                                                the Lease

        1.1.9   "Rent Commencement Date"        means the Completion Date or 
                                                (if applicable) Five Working 
                                                Days from the date of the 
                                                Landlord's notice given to the 
                                                Tenant pursuant to clause 5.2 
                                                hereof whichever is the later

        1.1.10  "Repairs Notice"                means a notice served by the 
                                                Tenant pursuant to clause 4.2 
                                                hereof

        1.1.11  "The Surety"                    means ECC International Corp

        1.1.12  "Tenant"                        means ECC Simulation Limited

        1.1.13  "Term Commencement Date"        means 25th March 1998

        1.1.14  "Working Day"                   means a day falling on and 
                                                between Monday and Friday upon
                                                which clearing banks in the City
                                                of London are open for normal
                                                business

                                      -3-
<PAGE>   5
1.2     References to a clause or other provision of this agreement shall
        be to that so numbered or otherwise identified in this agreement unless
        a contrary intention is expressed

1.3     Clause headings are to be ignored for the purposes of interpretation

1.4     References to any statute shall include a reference to any modification 
        or re-enactment thereof

1.5     At any time when the Landlord or the Tenant comprise two or more 
        persons such expression shall include all and any of such persons and 
        obligations expressed or implied to be made by or with any of them 
        shall be deemed to be made by or with such persons jointly and severally

2.      AGREEMENT

In consideration of the sum of ONE POUND (Pound Sterling 1) paid by the Tenant 
to the Landlord (receipt of which the Landlord acknowledges) the Tenant shall 
have the option of taking up the lease of the Premises for a term commencing on 
the Term Commencement Date and expiring on 24th June 2016 at the Initial Rent 
(subject to upward review as provided for in the Lease)

3.      EXERCISE OF THE OPTION

3.1     The Option shall be exercisable by notice in writing from the Tenant to 
        the Landlord at any time during the Option Period

3.2     If the Option shall be exercised:-

        3.2.1   The Landlord shall grant to the Tenant and the Tenant shall 
                accept the Lease for a term commencing on the Term Commencement 
                Date and expiring on 24th June 2016 at the Initial Rent 
                (subject to upward review as provided for in the Lease) and the 
                First Reserved Rent (as defined in the Lease) shall commence to 
                be payable on the Rent Commencement Date and

                                      -4-


<PAGE>   6
                the Landlord shall duly execute the original and deliver it to 
                the Tenant and the Tenant and the Surety shall duly execute 
                the counterpart and deliver it to the Landlord; and

        3.2.2   The Landlord shall within 10 Working Days of the exercise of 
                the Option serve a notice on the tenant under the Existing Unit
                1 lease to determine that lease on 24th March 1998 and if the
                Tenant under the Existing Unit 1 lease does not vacate the
                Premises by 25th March 1998 the Landlord shall use its best
                endeavours to obtain possession of the Premises as soon as
                reasonably practicable

4.      CONDITION OF PREMISES

4.1     The Landlord will give the Tenant notice in writing when the Premises 
        are vacant and shall for a period of 20 Working Days from the date of
        such notice afford the Tenant all necessary facilities and access to the
        Premises to enable the Tenant and its surveyor to satisfy themselves
        that the Premises (including the Main Structure (as defined in the
        Lease) and all fixtures fittings plant machinery and apparatus belonging
        thereto and the walls fences drains appurtenances and decorations
        thereof) are in good and substantial repair and condition and cleansed

4.2     The Tenant may within 20 Working Days from the date of the Landlord's 
        notice given pursuant to clause 4.1 hereof (time to be of the essence)
        give a notice to the Landlord if the Tenant does not consider on
        reasonable and proper grounds that the Premises (including the Main
        Structure (as defined in the Lease) and all fixtures fittings plant
        machinery and apparatus belonging thereto and the walls fences drains
        appurtenances and decorations thereof) are in good and substantial
        repair and condition and cleansed and at the same time shall give full
        details of its reasons for such conclusion

4.3     Upon service of a Repairs Notice the Landlord and the Tenant will 
        endeavour to resolve what if any action should be taken but if they

                                      -5-
<PAGE>   7
        cannot or do not do so the objections not so resolved are to be 
        submitted to an independent chartered building surveyor who shall act as
        an expert such independent chartered building surveyor to be appointed
        by the parties or failing agreement appointed on the request of either
        party by the President for the time being of the Royal Institution of
        Chartered Surveyors and such independent chartered building surveyor
        shall:-

        4.3.1   afford to the parties the opportunity to make representations in
                writing and in reaching his decision he shall consider any
                written representations made by or on behalf of the parties
                hereto which are received by him within 10 Working Days after
                they have been afforded such opportunity and each party shall be
                entitled to receive a copy of any such written representations
                made by or on behalf of the other party and within 5 Working
                Days of such receipt to make written counter representations;
                and

        4.3.2   be entitled to call for such independent expert advice on such 
                matters as he shall think fit; and

        4.3.3   otherwise than as mentioned in sub-clause 4.3.1 he shall have 
                an unfettered discretion to determine the reference to him; and

        4.3.4   give written reasons for his decision if required by either 
                party; and

        4.3.5   determine the reference to him within 30 Working Days of being 
                appointed 

4.4     If a Repairs Notice is served on the Landlord by the Tenant which 
        necessitates the Landlord carrying out works to the Premises such works
        shall be carried out within a reasonable time in a proper and
        workmanlike manner with good materials and on completion of such works

                                      -6-
<PAGE>   8
        the Landlord shall give written notice thereof to the Tenant and afford 
        the Tenant an opportunity to inspect the same

5.      COMPLETION

5.1     The Completion of the grant of the Lease shall take place on the 
        Completion Date and completion shall take place at the office of the 
        Landlord's solicitors

5.2     Without prejudice to any right of action or otherwise which the Tenant 
        may have against the Landlord as result of any failure by the Landlord 
        to observe and perform the Landlord's obligations under this Agreement 
        if the Landlord shall default in completing the Lease on the Completion 
        Date the Landlord shall serve written notice on the Tenant when the
        Landlord is ready and willing to complete the Lease

6.     POSSESSION

Vacant possession of the Premises shall be given on completion of the grant of 
the Lease

7.     TITLE

7.1     Title to the grant of the lease shall consist of a copy of the entries 
        on the register and a copy of the filed plan for title number ESX177917 
        together with a copy of the lease referred to in the Property Register 
        of said title

7.2     The Tenant having investigated and accepted the Landlords title
        to the grant of the lease prior to the date hereof shall raise no
        objection or requisition in respect thereof save for any which may arise
        out of a 94B Search at H.M. Land Registry in respect of adverse entries
        registered after 26th July 1995 being the date the office copy entries
        supplied to the Tenant's solicitors

8.      LICENSE FEE

                                      -7-
<PAGE>   9
 8.1    The Tenant shall pay to the Landlord from the Rent Commencement Date a 
        licence fee equal to the Initial Rent in the same manner as the Initial
        Rent reserved by the Lease and any insurance premium service charge or
        other monies due in respect of the Premises which would be due if the
        Lease had been granted on the Rent Commencement Date plus any Value
        Added Tax payable on such sums

 8.2    On the grant of the Lease any licence fee as aforesaid and/or insurance 
        premium and service charge paid in advance in respect of any period
        beyond the date of the grant of the Lease shall be credited against the
        Initial Rent and/or the insurance premium and service charge due under
        the Lease

 8.3    If any of the monies payable under this clause 8 by the Tenant to the 
        Landlord shall be due but unpaid for ten Days the Tenant shall pay
        interest thereon (if demanded by the Landlord) calculated on the daily
        basis from the due date until receipt by the Landlord at the rate of 4
        per centum per annum above the base rate from time to time of Royal Bank
        of Scotland Plc

 9.     REPRESENTATIONS

The Tenant acknowledges that it has not entered into this agreement in reliance 
on any representation made but not incorporated herein and also acknowledges 
that neither the Landlord nor its agents or advisors nor any other person 
acting for the Landlord has made any representation (whether written oral or 
implied) in relation to any matter contained or referred to in this agreement 
or otherwise

10.     MERGER ON COMPLETION

The provisions of this agreement shall not merge on the completion of the grant 
of the lease of the Premises to the Tenant so far as they remain to be 
performed 

11.     RESTRICTION ON ASSIGNMENT

                                      -8-
<PAGE>   10
This agreement is personal to the Tenant and shall not be capable of assignment 
nor shall the Landlord be required to grant the lease of the Premises to anyone 
other than the Tenant

12.     NOTICES

Any notices or other written communications required to be served or sent under 
the terms of this Agreement shall be served or sent by registered post or by 
recorded delivery to the address of the Surety stated in this agreement or 
to the registered office for the time being of the Landlord or the Tenant

13.     COSTS

The parties shall bear their own costs in connection with and incidental to 
this agreement and the grant of the Lease

14.     TERMINATION

14.1    The Landlord may determine this agreement forthwith by notice in 
        writing to that effect if:-

        14.1.1  The Tenant shall enter into liquidation whether compulsory or 
                voluntary (otherwise than for the purpose of amalgamation or 
                reconstruction) notwithstanding the Tenant may have exercised 
                the Option; or

        14.1.2  The Tenant fails to complete the Lease in accordance with the 
                terms of this agreement

14.2    Any determination under clause 14.1 shall be without prejudice to any 
        other rights or remedies of the Landlord against the Tenant for the 
        breach or non-performance of any of the obligations to be performed by 
        the Tenant under this agreement

14.3    Notwithstanding any such determination the Tenant if and to the extent 
        required by the Landlord will at its expense remove without delay any

                                      -9-
<PAGE>   11
        works carried out by the Tenant to the Premises and reinstate the same 
        to the reasonable satisfaction of the Landlord

15.     REGISTRATION

Notice of this agreement shall be registered against title number ESX177917 
within three months of the date hereof

16.     NATURE OF THIS AGREEMENT

This agreement is a deed and has been executed by the parties as a deed

17.     SURETY

In consideration of the Landlord agreeing to enter into this Agreement with 
the Tenant (at the request of the Surety)

17.1    The Surety hereby unconditionally and irrevocably guarantees to the 
        Landlord the performance by the Tenant of the stipulations and
        obligations and duties on the Tenant's part contained in this Agreement
        and the payment by the Tenant to the Landlord of all sums of money due
        or becoming due to the Landlord thereunder (all of which are hereinafter
        referred to as the "Guaranteed Obligations") and the Surety
        unconditionally undertakes with the Landlord that if and whenever the
        Tenant shall be in default in relation to the Guaranteed Obligations the
        Surety will forthwith upon the written demand of the landlord pay to the
        Landlord the whole amount in respect of which the Tenant is so in
        default and will indemnify and keep indemnified the Landlord in respect
        of any non performance non observance or other breach and will by way of
        primary obligation perform observe or keep (as the case may be) the
        stipulations obligations or duties in respect of which the Tenant is so
        in default

17.2    The Surety shall not be exonerated or discharged from its liability 
        hereunder by any insolvency or the liquidation of the Tenant or the 
        Surety or by the time being given to the Tenant or the Surety or by any

                                      -10-
<PAGE>   12
        other indulgence or concession to the Tenant or the Surety granted or 
        allowed by the Landlord or by the taking holding varying compromising 
        non-enforcement or release by the Landlord or any other rights in 
        respect of all or any of the obligations or liabilities of the Tenant 
        or the Surety under this Agreement or by any variation to the terms of 
        this Agreement

17.3    Moneys payable by the Tenant or the Surety shall be paid to the 
        Landlord to such account in England as the Landlord shall from time to 
        time require in writing

17.4    The Surety represents and warrants to the Landlord that the Surety has 
        full power authority and legal right to enter into the obligations 
        contained in this Clause 17

17.5    The rights and obligations of the parties hereto shall be governed and 
        construed in accordance with English law

17.6    The Surety hereby irrevocably:-

        17.6.1  agrees that the Courts of England and Wales shall have 
                jurisdiction to hear and determine any suit action or proceeding
                arising out of or relating to this Agreement (including this
                Clause 17) and

        17.6.2  waives to the fullest extent permitted by law any objection 
                which the Surety may now or hereafter have to the jurisdiction
                of the Courts of England and Wales to hear and determine any
                suit action or proceeding arising out of or relating to this
                Agreement (including this Clause 17) or any claim that any such
                Court is not a convenient or appropriate forum

        17.6.3  agrees that the process by which any suit action or proceeding 
                is begun may be served on the Surety by being delivered in 
                connection with any suit action or proceeding in England to 
                the Tenant

                                      -11-
<PAGE>   13
17.7    The submission to the jurisdiction of the Courts referred to in Clause 
        17.7 shall not (and shall not be construed as to) limit the right of the
        Landlord to take proceedings against the Surety in any other Court of
        competent jurisdiction nor shall the taking of proceedings in any one or
        more jurisdictions preclude the taking of proceedings in any other
        jurisdiction whether concurrently or not

IN WITNESS the hands of the parties hereto or their duly authorised 
representatives the day and year hereinbefore written


Signed  [Signature Illegible]
        ---------------------------------------
A director for and on behalf of ECC Simulation Limited


[Signature Illegible]


Signed  George W. Murphy
        ----------------------------------------
For an on behalf of ECC International Corp

        State of Pennsylvania
        County of Delaware


        The foregoing instrument was acknowledged before me this 28th day of
        November, 1995 by George W. Murphy of ECC International Corp., a 
        Delaware Corporation, on behalf of the corporation


[SEAL]

                                 NOTARIAL SEAL
                        Margery R. Green, Notary Public
                          Radnor Twp., Delaware County
                      My Commission Expires Jan. 31, 1998
                      -----------------------------------
                  Member, Pennsylvania Association of Notaries

                                      -12-
<PAGE>   14
THIS LEASE made the                                                         1995

BETWEEN

(1)     G J KING & SON (HOME FARM) LIMITED whose registered office is situate
        at G J King Business Centre Reeds Lane Sayers Common West Sussex 
        (hereinafter called "the Landlord") of the first part and

(2)     ECC SIMULATION LIMITED whose registered office is situate at Kingston 
        Wharf Brighton Road Shoreham by Sea West Sussex (hereinafter called  
        "the Tenant") of the second part and

(3)     ECC INTERNATIONAL CORP a company incorporated in the State of Delaware 
        and whose principal place of business is at 175 Strafford Avenue Wayne 
        PA 19087-3377 USA (hereinafter called "the Surety") of the third part

WITNESSETH as follows:-

1.      IN this lease where the context so admits the following expressions 
        shall have the following meanings respectively that is to say:-

        "the landlord"
        means the Landlord hereinbefore named or such other person for the time 
        being entitled to the reversion immediately expectant upon the 
        determination of the Term

        "the Tenant"
        means the Tenant hereinbefore named or such other person in whom the 
        Term shall for the time being be vested and wherever it includes more 
        than one person the covenants on the part of the Tenant hereinafter 
        contained shall be deemed to be joint and several

        "the Plan"
        means the plan numbered 1 annexed hereto

                                      -1-
             

<PAGE>   15
                            [Schematic of property]


<PAGE>   16
        "the Grassed and Planted Areas"
        means the grassed and planted areas which adjoin Home Farm Road Brighton
        East Sussex

        "the Demised Premises"
        means the land with the building erected thereon or on some part thereof
        known as Unit 1 Home Farm Business Centre Home Farm Road Brighton East
        Sussex and the curtilage thereof as the same is shown edged red on the
        Plan and shall include any other building from time to time erected
        thereon or on some part thereof

        "Unit 2"
        means the property adjoining the Demised Premises known as Unit 2 Home
        Farm Business Centre Home Farm Road Brighton aforesaid

        "the Main Structure"
        means the roof foundations floor structures load bearing walls or frame
        stanchions beams window frames external walls external drains pipes and
        other external services of the Demised Premises

        "the Soakaways"
        means the soakaways situated on Unit 2 and drainage pipes leading
        thereto from the Demised Premises

        "Insured Risks"
        means (subject to such exclusions and limitations as are imposed by the
        Insurers and to the extent that insurance cover against any particular
        risk is ordinarily available with a reputable insurer for property such
        as the Demised Premises) subsidence landslip heave fire explosion storm
        tempest lightning aircraft (not being hostile aircraft) and articles
        dropped therefrom riot civil commotion and flood and such other
        insurable risks against which the Landlord shall reasonably deem it
        desirable or expedient to insure

                                      -2-

        
<PAGE>   17
        "Term"
        means a term commencing on 25th March 1998 and expiring on 24th 
        June 2016

        "the Rent Commencement Date"
        means                         1998

        "the Initial Rent"
        means the sum of ONE HUNDRED THOUSAND POUNDS (Pound Sterling 100,000) 
        a year exclusive of Value Added Tax

        "the First Reserved Rent"
        means the yearly rent reserved by Clause 2(A) hereof

        "the Secondly Reserved Rents"
        means

        (1)     a sum representing the cost reasonably and properly incurred or
                a fair proportion thereof (subject to the provisions of 
                Clause 4(7)(h) hereof) of complying with the Landlord's 
                insuring covenant hereinafter contained

        (2)     all other sums payable by the Tenant under the covenants on 
                the part of the Tenant contained in this lease

        (3)     any interest chargeable under the provisions of this lease

        (4)     any additional insurance premiums payable by the Tenant arising
                under the provisions of Clause 4(7) of this lease

        (5)     all expenses costs fees and other sums incurred under the
                provisions Clause 4(24) hereof

        "the Review Dates"
        means 24th June 2000  24th June 2005  24th June 2010 and 24th June 2015

                                      -3-
<PAGE>   18
        "the Review Period" 
        means the period starting with any Review Date up to and including the
        day immediately preceding the next Review Date or starting with the last
        Review Date up to the end of the Term

        "the Service Charge"
        means the sums payable by the Tenant in accordance with Part 2 of the
        Second Schedule hereto

        "the Service Charge Year"
        means the period of twelve months up to the 31st March each year or such
        other period as the Landlord shall from time to time choose

        "the Service Costs"
        means all costs expenses and outgoings whatsoever incurred by the
        Landlord in carrying out the works and providing the services set out in
        Part 1 of the Second Schedule hereto

        "the Landlord's Surveyor"
        means any person or firm of surveyors appointed by or acting for the
        Landlord including an employee of the Landlord to perform the function
        of a Surveyor for any purposes under this lease

        "the Superior Lease"
        means the lease of the Demised Premises and other land and premises
        dated 9th May 1991 and made between Brighton Borough Council of the one
        part and the Landlord of the other part

        "the Superior Lessor"
        means Brighton Borough Council or such other person entitled to the
        benefit of the reversion expectant upon the determination of the
        Superior Lease

        "the Interest Rate"
        means the rate of Four per centum per annum above the base rate from
        time to time of The Royal Bank of Scotland PLC

                                      -4-
<PAGE>   19
        "the Planning Acts"
        means the Town and Country Planning Act 1990 the Planning (Consequential
        Provisions) Act 1990 the Planning (Hazardous Substances) Act 1990 and
        the Planning (Listed Building and Conservation Areas) Act 1990 or any
        statutory consolidation modification or re-enactment of all or any of
        the above Acts

        "the Units"
        means all the units lettered "A" and "B" on the Plan together with the
        forecourt parking and landscaped areas therewith

        "an Individual Unit" 
        means any one of the Units

        "Qualifying Person"
        means a company or corporation registered in the United Kingdom which
        has annual profits (which term shall have a meaning which is consistent
        with the term "profits for the financial year" where used in the Fourth
        Schedule to the Companies Act 1985) in the United Kingdom as shown in
        such company's or corporation's properly audited financial statements
        for the last three 12 month accounting periods immediately preceding the
        proposed assignment of this lease to such company or corporation (the
        last of such accounting periods) expiring not more than 12 months prior
        to the date of such assignment) which are not less than the sum of the
        annual rents pursuant to clauses 2(A) and 2(B) of this lease for the
        year immediately prior to the date of such assignment multiplied by a
        factor of 2.5
 
2.      IN consideration of the rents and tenants covenants hereinafter 
        reserved and contained the Landlord HEREBY DEMISES unto the Tenant the
        Demised Premises TOGETHER WITH the easements and rights specified in
        Part 1 of the First Schedule hereto EXCEPT AND RESERVED unto the
        Landlord and others the easements and rights specified in Part 2 of the
        First Schedule hereto TO HOLD the same unto the Tenant for the Term
        YIELDING AND PAYING to the Landlord without deduction during the


                                      -5-
<PAGE>   20
        Term and proportionately for any fraction of a year the rents set out 
        hereunder

        (A)     The FIRST RESERVED RENT as hereinbefore defined being

                (1)  from the date hereof until the Rent Commencement Date a 
                     peppercorn (if demanded); and 

                (2)  from and including the Rent Commencement Date until and 
                     including the day immediately preceding the first Review 
                     Date the Initial Rent; and

                (3)  during each successive Review Period a rent equal to the 
                     yearly rent previously payable hereunder or such increased
                     rent as shall be ascertained in accordance with Clause 3 
                     hereof whichever shall be the greater BUT during the first
                     Review Period the rent shall not exceed ONE HUNDRED AND 
                     TWENTY THOUSAND POUNDS (Pound Sterling 120,000) a year 
                     exclusive of Value Added Tax

        ALL such rents to be paid by equal quarterly instalments in advance on
        the usual quarter days in every year the first payment of the Initial
        Rent (apportioned in respect of the period from and including the Rent
        Commencement Date up to and including the day immediately preceding the
        next following quarter day) to be payable on the Rent Commencement Date

        (B)       The SECONDLY RESERVED RENTS as hereinbefore defined

                  Such rents to be payable from and including the date hereof or
                  (if earlier) the date of occupation (as determined by the
                  Landlord or the Landlord's Surveyor) and to be paid to the
                  Landlord within fourteen days of demand (except as otherwise
                  provided)

3.      RENT REVIEW


                                      -6-
<PAGE>   21
        (1)     The increased rent for any Review Period shall be (having 
                regard to current open market values) the open market yearly 
                rent at which the whole of the Demised Premises might 
                reasonably be expected to be let at the relevant Review Date

        (A)     On the following assumptions at the relevant Review Date:-

                (i)     that the Demised Premises are fit for immediate 
                        occupation and use and that no work has been carried 
                        out thereon by the Tenant its undertenants or their 
                        respective predecessors in title during the Term which 
                        has diminished the rental value of the Demised Premises 
                        and that in case the Demised Premises have been 
                        destroyed or damaged they have been fully restored


                (ii)    that the Demised Premises are available to let in the 
                        open market by a willing landlord to a willing tenant as
                        a whole without a premium but with vacant possession and
                        subject to the provisions of this lease (other than the
                        amount of the rent hereby reserved but including the
                        provisions for rent review at intervals of every five
                        years) for a term of ten years from the relevant Review
                        Date or the residue then unexpired of the term of this
                        lease (whichever shall be the longer)

                (iii)   that the covenants herein contained on the part of the 
                        Tenant and the Landlord have been fully performed and 
                        observed

        (B)     But disregarding:-

                (i)     any effect on rent of the fact that the Tenant its 
                        undertenants or their respective predecessors in title 
                        have been in occupation of the Demised Premises; and

                                      -7-
<PAGE>   22
        (ii)    any goodwill attached to the Demised Premises by reason of the 
                carrying on thereat of the business of the Tenant its 
                undertenants or their respective predecessors in title in 
                their respective businesses; and

        (iii)   any increase in rental value of the Demised Premises 
                attributable to the existence at the relevant Review Date of 
                any improvement to the Demised Premises or any part thereof 
                carried out with consent where required by and at the expense 
                of the Tenant its undertenants or their respective predecessors
                in title during the Term otherwise than in pursuance of an 
                obligation to the Landlord or its predecessors in title; and

        (iv)    any effect on rental value of any obligation of the Tenant to 
                remove alterations or to restore or reinstate the Demised 
                Premises

        (v)     any rent free period or reduced rent period allowed to the 
                Tenant under the terms of this lease

        (vi)    the provisions of clause 6(4)(b) (c) and (d) hereof

(2)     The increased rent for any Review Period may be agreed at any time 
        between the Landlord and the Tenant or (in the absence of agreement)
        determined not earlier than the relevant Review Date by an arbitrator
        such arbitrator to be nominated in the absence of agreement by or on
        behalf of the President for the time being of the Royal Institution of
        Chartered Surveyors on the application of the Landlord or the Tenant
        made not earlier than six months before the relevant Review Date

(3)     IT IS HEREBY FURTHER PROVIDED in relation to the ascertainment and 
        payment of the reviewed rent as follows:-

                                      -8-
<PAGE>   23
        (A)     The arbitrator shall be a Chartered Surveyor having not less
                than ten years experience in letting and valuation of similar
                property and of similar sized properties to the Demised Premises
                throughout England

        (B)     The arbitration shall be conducted in accordance with the
                Arbitration Acts 1950 and 1979 or any statutory modification or
                re-enactment thereof for the time being in force with the
                further provision that if the arbitrator nominated pursuant to
                Clause 3 hereof shall die or decline to act the President for
                the time being of the Royal Institution of Chartered Surveyors
                or the person acting on his behalf may on the application of
                either the Landlord or the Tenant by writing discharge the
                arbitrator and appoint another in his place

        (C)     When the increased rent has been ascertained as hereinbefore
                provided the Landlord and the Tenant shall record it forthwith
                by each signing and exchanging a separate written memorandum and
                the Landlord and the Tenant shall bear their own costs in
                respect thereof

        (D)     (i)     if the increased rent payable on and from any Review
                        Date has not been agreed by that Review Date rent shall
                        continue to be payable at the rate previously payable
                        and forthwith upon the increased rent being ascertained
                        the Tenant shall pay to the Landlord any shortfall
                        between the rent actually paid and the increased rent
                        payable from the relevant Review Date up to the quarter
                        day immediately following the date that the increased
                        rent is ascertained together with interest on each
                        instalment thereof from the date upon which the same
                        would have been payable if the increased rent had been
                        ascertained on the relevant Review Date to the date of
                        actual

                                      -9-
<PAGE>   24
                        payment thereof at the rate of two per cent below the
                        Interest Rate and the interest so payable shall be
                        recoverable in the same manner as rent in arrear

                (ii)    for the purposes of this proviso the increased rent 
                        shall be deemed to have been ascertained on the date
                        when the same has been agreed between the Landlord and
                        the Tenant or as the case may be the date of the award
                        of the arbitrator

        (E)     Time shall not be of the essence of this Rent Review clause

        (F)     If either the Landlord or the Tenant shall fail to pay any 
                costs awarded against it in an arbitration under the provisions
                hereof within fourteen days of the same being demanded by the
                arbitrator the other shall be entitled to pay the same and the
                amounts so paid shall be repaid by the party chargeable on
                demand

(4)     Without prejudice to the provisions of this Clause if on any Review 
        Date there shall be in force any enactment which shall relate to the
        control of rents and/or which shall restrict the Landlord's right to
        review the rent or recover any increased rent under this lease then the
        Landlord shall be entitled upon the termination or relaxation of such
        restriction to serve notice (hereinafter called "Interim Notice") upon
        the Tenant and from and after the date of the termination or relaxation
        of such restriction until the next Review Date (or until the end of the
        Term) as the case may be the rent shall be increased to whichever is the
        higher of the rent agreed or determined in accordance with the
        provisions hereinbefore contained but at the date of service of the
        Interim Notice (or such lesser sum as may be permitted) or the rent
        payable immediately prior thereto and the provisions

                                      -10-
<PAGE>   25
                of this Clause shall apply accordingly with the substitution of 
                the date of the termination or relaxation of such restriction 
                for the relevant Review Date

4.      THE Tenant hereby covenants with the Landlord as follows:-

        (1)     TO PAY RENT AND INTEREST

                (a)     To pay the rents hereby reserved unto the Landlord 
                        throughout the Term and during a statutory continuation
                        thereof at all times and in manner aforesaid without any
                        deduction whatsoever except as authorised by any
                        statutory enactment for the time being in force

                (b)     If any of the rents hereby reserved shall be due but 
                        unpaid for 14 days to pay interest thereon (if demanded
                        by the Landlord) calculated on a daily basis with three
                        monthly rests from the due date until receipt by the
                        Landlord at the Interest Rate (the Interest Rate shall
                        and apply before as well as after and notwithstanding
                        any judgement of the Court) Provided that this
                        sub-clause shall not prejudice any other right or remedy
                        in respect of such reserved rents

                (c)     If following the occurrence of any of the events 
                        referred to in clause 6(1)(b) hereof acceptance of any
                        of the rents hereby reserved shall be reasonably refused
                        by the Landlord but shall subsequently be accepted
                        without prejudice to any other right or remedy of the
                        Landlord to pay interest thereon (if demanded by the
                        Landlord) calculated on a daily basis with three monthly
                        rests from the due date until acceptance and receipt by
                        the Landlord at the Interest Rate (the Interest Rate
                        shall apply before as well as after and notwithstanding
                        any judgement of the Court) Provided

                                      -11-
<PAGE>   26
                that this sub-clause shall not prejudice any other right or
                remedy in respect of such reserved rents

(2)     TO PAY SERVICE CHARGE AND INSURANCE

        (a)     To pay the Service Charge in the manner set out in Part 2 of the
                Second Schedule hereto

        (b)     To pay on demand therefor the sum representing the cost 
                (subject to the provisions of clause 4(7)(h) hereof) of 
                complying with the Landlord's insuring covenant hereinafter 
                contained

(3)     TO PAY RATES AND TAXES

        To pay and discharge all existing and future rates taxes charges duties 
        assessments and outgoings whatsoever whether parliamentary local or
        otherwise now or hereafter imposed or charged upon the Demised Premises
        or any part thereof or upon the owner or any occupier thereof or payable
        by either in respect thereof (excluding any payable by the Landlord in
        respect of receipt of rent or any other payment made by the Tenant under
        this lease (except any VAT payable on rent or any other payment made by
        the Tenant under this lease) or on any disposition or dealing with or
        the ownership of the reversion of this lease) but including all charges
        in respect of water gas electricity and telecommunications used or
        consumed at the Demised Premises PROVIDED ALWAYS that the Tenant shall
        not agree or by default allow to be fixed the rateable value of the
        Demised Premises or any part thereof without the prior written consent
        of the Landlord such consent not to be unreasonably withheld

(4)     TO REPAIR

                                      -12-
<PAGE>   27
        Well and substantially to repair cleanse maintain amend and keep in good
        and substantial repair the Demised Premises (including the Main
        Structure and all fixtures fittings Plant machinery and apparatus
        belonging thereto) and all additions made thereto and the walls fences
        drains appurtenances and decorations thereof and to renew and replace
        the same from time to time insofar as the same may be or become beyond
        repair at any time during or at the expiration of the Term (howsoever
        determined) damage in all such cases from any of the Insured Risks
        excepted so long as the Policy of insurance effected by the Landlord
        shall not have been vitiated or payment of any Policy moneys refused in
        whole or in part by reason of any act neglect or default of the Tenant
        its undertenants or their respective servants agents or licensees

(5)     TO PAINT AND DECORATE

        In every third year of the Term and also during the last year thereof
        (howsoever determined) to paint in a proper and workmanlike manner the
        outside wood iron and other parts heretofore or usually painted of the
        buildings on Demised Premises and all additions thereto with two coats
        of good quality paint suitable for external use and for the surface and
        material to which it is to be applied such painting in the last year of
        the Term (howsoever determined) to be in colours previously approved in
        writing by the Landlord And in every fifth year of the Term and also in
        the last year thereof (howsoever determined) to paint in a proper and
        workmanlike manner all the inside wood iron and other parts heretofore
        or usually painted of the buildings on the Demised Premises and all
        additions thereto with two coats of good quality paint suitable for the
        surface and material to which it is to be applied such Painting in the
        last year of the Term (howsoever determined) to be in colours Previously
        approved in writing by the Landlord And on the occasion of every such
        external painting to varnish or colour the 

                                      -13-
<PAGE>   28
        external parts usually or previously so dealt with and on the occasion
        of every internal painting to varnish wash stop whiten and colour all
        such parts as have previously been or are usually so dealt with and to
        repaper with suitable paper of good quality (in the last year of the
        Term (howsoever determined in colours previously approved in writing by
        the Landlord) the parts previously or usually papered

(6)     TO CLEAN WINDOWS ETC
        
        To clean internally and externally the windows of the Demised Premises
        as often as occasion shall require and at least once in every month and
        at least once a week to remove all refuse rubbish and scrap which may
        have accumulated on the Demised Premises

(7)     INSURANCE

        (a)     Subject to the Landlord having supplied to the Tenant in 
                writing full particulars of any policy of insurance effected on 
                the Demised Premises and any modification or variation thereof 
                not to do or omit or allow to be done or omitted any act matter 
                or thing whatsoever whereby any policy of insurance effected on 
                the Demised Premises or anything therein or on any adjoining
                or neighbouring premises of the Landlord may become void or 
                voidable or the premiums payable for such insurance increased

        (b)     To the extent that any insurance premium payable in respect of 
                any adjoining or neighbouring premises is increased by any use 
                act neglect omission or default of the Tenant its undertenants 
                or their respective servants agents or licensees in relation to 
                the Demised Premises to pay the Landlord on demand the amount 
                of such increase

                                      -14-
<PAGE>   29
        (c)     In the event of the Demised Premises or any part thereof being 
                destroyed or damaged by any of the insured Risks to give 
                immediate notice thereof in writing to the Landlord

        (d)     In the event of the Demised Premises or any part thereof being 
                destroyed or damaged by any of the Insured Risks and the 
                insurance money under any insurance effected against the same 
                being wholly or partly irrecoverable (by reason of any act 
                neglect omission or default of the Tenant its undertenants or 
                their respective servants agents or licensees) then and in 
                every such case the Tenant will pay to the Landlord forthwith 
                the whole (as the case may require) a fair proportion of the
                cost of completely rebuilding and reinstating the same

        (e)     Subject to the Landlord having supplied in writing to the 
                Tenant full particulars thereof to comply with the requirements 
                and recommendations of the Landlord's insurers

        (f)     Not to store on the Demised Premises any inflammable or any 
                explosive combustible or deleterious substance save that the 
                Tenant may store at the Demised Premises such reasonable 
                quantities of inflammable substances in proper and safe 
                containers as are normally used for its business SUBJECT TO the 
                Tenant obtaining the Landlord's insurers prior written approval 
                thereto and the Tenant paying any increase in insurance premium 
                arising therefrom and on the reasonable request of the Landlord 
                supplying to the Landlord details of the type and amounts of 
                the substances stored on the Demised Premises

        (g)     To repay to the Landlord on demand the proper costs and 
                expenses incurred in obtaining valuations of the Demised 
                Premises for insurance purposes from time to time but so

                                      -15-
<PAGE>   30
                that such valuations shall not be carried out more frequently 
                than once every three years

        (h)     The Landlord may retain for the Landlord's own benefit any 
                commissions or discount received or obtained by the Landlord on 
                or based on the gross premiums and other expenses which would 
                otherwise be paid incurred or suffered by the Landlord in 
                effecting or maintaining such insurance

        (i)     To insure and keep insured in the joint names of the Landlord
                and the Tenant and such other names as the Landlord may
                reasonably require all the plate glass or any substitute or
                alternative material used in windows (if any) and doors in the
                Demised Premises against breakage or damage howsoever caused
                with an insurance company of repute to the full reinstatement
                value thereof and public liability relevant to such breakage
                and pay all premiums necessary for that purpose and whenever
                required produce to the Landlord or its agent the policy of
                insurance and the receipt for the current year's premium and
                whenever a claim arises to use the insurance money forthwith in
                reinstating the same with a like material to the reasonable
                satisfaction of the Landlord's Surveyor making up any deficiency
                out of the Tenant's own moneys

        (j)     To pay to the Landlord on demand the amount of any excess which 
                may be applicable in the event of any claim in respect of any 
                of the Insured Risks

(8)     TO EXECUTE WORKS

        To execute all works on or in respect of the Demised Premises now or
        from time to time throughout the Term lawfully required to be executed
        by any local or public authority             


                                      -16-
<PAGE>   31
        (including works required under the Health & Safety at Work etc. Act 
        1974 the Offices Shops and Railway Premises Act 1963 or any Act amending
        or replacing the same for the time being in force) whether the said
        works shall be required to be executed by the Landlord or by the Tenant
        and in all respects and at the Tenant's own expense to comply with and
        cause to be complied with the provisions of all statutes byelaws and
        regulations for the time being in force and the requirements of any
        competent authority affecting or relating to the Demised Premises or the
        use thereof and at all times to indemnify and to keep indemnified the
        Landlord and the Superior Lessor against all claims demands expenses and
        liability in respect thereof

(9)     NOTICES RECEIVED        

        Within seven days of receipt of the same to give full particulars to 
        the Landlord of any notice direction or order or proposal for a notice
        direction or order made given or issued to the Tenant by any government
        department or local or public authority and if so required by the
        Landlord to produce and supply copies of the same to the Landlord AND
        without delay to take all necessary steps to comply with the same AND
        ALSO at the request of the Landlord to make or join with the Landlord in
        making such objections or representations relating to the same as the
        Landlord shall deem expedient but with due regard being had to the
        Tenant's interest in the Demised Premises

(10)    TO PERMIT ENTRY TO VIEW

        To permit the Landlord and the Superior Lessor and their respective
        Surveyors or other agents during the Term at reasonable hours in the
        daytime on prior appointment to enter the Demised Premises to view the
        state of repair and
        


                                      -17-
<PAGE>   32
        condition of the same and to take inventories of the fixtures therein

(11)    TO PERMIT ENTRY TO REPAIR

        To permit the Landlord and the Superior Lessor or their respective
        agents or the Landlord's Surveyor with or without workmen at any time
        during the Term at reasonable hours in the daytime on prior appointment
        except in the case of emergency to enter upon the Demised Premises for
        the purpose of executing repairs or alterations to or in connection with
        any adjoining premises of the Landlord or the Superior Lessor the
        Landlord or the Superior Lessor making good all damage thereby
        occasioned to the Demised Premises

(12)    TO REPAIR ON NOTICE

        To repair and make good to the satisfaction of the Landlord and the
        Superior Lessor all breaches of covenant defects and wants of reparation
        for which the Tenant may be liable under the covenants herein contained
        of which notice shall have been given by the Landlord to the Tenant
        within two calendar months after the giving of such notice or sooner if
        requisite

(13)    TO COMPLY WITH STATUTORY REQUIREMENTS

        (a)     At all times to observe and comply with the provisions of or 
                imposed under any statute licence or regulation regulating or
                permitting the use of the Demised Premises for the purpose for 
                which they are for the time being used and the requirements of 
                any competent authority in that connection and at the expense 
                of the Tenant to do all that is necessary to obtain maintain 
                and renew all licences and registrations required by law for 
                the use of the Demised Premises for that purpose

                                      -18-

<PAGE>   33
        (b)     At the sole cost of the Tenant to comply with the Planning Acts 
                for the time being in force and of all byelaws orders and 
                regulations licences consents permissions and conditions made 
                thereunder affecting the Demised Premises or any use thereof 
                and to indemnify and keep harmless and indemnified the Landlord 
                against any breach or non-performance of any such requirements 
                and against all costs expenses penalties and levies thereby
                arising

(14)    PLANNING

        In relation to the Planning Acts:

        (a)     Not without prior written consent of the Landlord such consent 
                not to be unreasonably withheld or delayed to apply for 
                permission to carry out on the Demised Premises any development 
                requiring permission under the Planning Acts

        (b)     Not to implement any planning permission relating to the 
                Demised Premises without the prior written consent of the 
                Landlord such consent not to be unreasonably withheld or 
                delayed but without prejudice to the generality of the 
                foregoing such consent shall be given if in the opinion of the 
                Landlord or the Landlord's Surveyor (whose decision shall be 
                final) the value of the Landlord's reversionary interest is not 
                affected thereby

        (c)     Whenever required to permit the Landlord to enter upon the 
                Demised Premises to comply with any requirement lawfully made 
                of it under the Planning Acts by any competent authority 
                notwithstanding that any action reasonably necessary for 
                compliance interferes with the Tenant's enjoyment of the 
                Demised Premises

                                      -19-


<PAGE>   34
        (d)     To pay and satisfy any charge which may hereafter be imposed 
                under the Planning Acts in respect of the carrying out of
                any operations or the institution or continuance of the use of 
                the Demised Premises

        (e)     Unless the Landlord shall otherwise direct in writing to carry 
                out and complete before the expiration or sooner determination 
                of the Term any works stipulated to be carried out to the 
                Demised Premises (notwithstanding that such works are to be 
                carried out by a later date) as a condition of planning 
                permission for any development begun before such expiration or 
                sooner determination

        (f)     If the Tenant shall receive any compensation relating to the 
                Tenant's interest hereunder due to any restriction placed upon 
                the user of the Demised Premises as a result of the Planning 
                Acts then if and when the Tenant's interest hereunder shall be 
                determined by assignment or under the power of re-entry herein 
                contained the Tenant shall forthwith make such provision as is 
                just and equitable for the Landlord to receive its due benefit 
                from such compensation

(15)    PERMITTED USE

        Not to use or permit or suffer to be used the Demised Premises or any
        part thereof otherwise than solely and exclusively as and for use within
        Classes B1(b) or (c) or B2 of the Town and Country Planning (Use
        Classes) Order 1987 (as originally enacted) and uses ancillary thereto
 
(16)    PROHIBITED USES

        Not to use the Demised Premises or any part thereof nor allow the same 
        to be used as the premises of any public or local

                                      -20-
<PAGE>   35
        authority to which the public have access or for any public meeting
        exhibition or entertainment or for any illegal or immoral purpose or for
        the purposes of a club whether or not one where intoxicating liquor is
        supplied to members or their guests nor permit or suffer any sale by
        auction to be held on the Demised Premises or any part thereof or to
        sell serve or supply or permit or suffer to be sold served or supplied
        any  intoxicating liquor thereon or therefrom (save that intoxicating
        liquor may be served to staff in any staff restaurant which is ancillary
        to the use permitted by Clause 4(15) hereof) or play or use or allow to
        be played or used any sound-producing instrument or apparatus on the
        Demised Premises or any part thereof so as to be audible outside the
        Demised Premises nor permit the Demised Premises to be used as a
        sleeping place for any person and not to use the Demised Premises or any
        part thereof or permit or suffer the same to be used for the purpose of
        any betting transactions or for gaming with or between persons resorting
        to the Demised Premises and not to make or permit or suffer to be made
        any application for a Betting Office Licence or a Licence or
        registration under the Gaming Acts 1963 to 1968 in respect of any part
        of the  Demised Premises
 

(17)    NUISANCE

        Not to do or commit or permit or suffer to be done or committed upon the
        Demised Premises or any part thereof any act or thing which shall be a
        nuisance annoyance or disturbance to the Landlord or the Superior Lessor
        or to the owners lessees or occupiers for the time being of any
        adjoining or neighbouring property or to the neighbourhood        

(18)    ALTERATIONS

        (a)     Not at any time during the Term to make any alteration or 
                addition to the sprinkler system (if any) or to make


                                      -21-
<PAGE>   36
                any alterations to the Demised Premises which effect 
                the operation of the sprinkler system (if any) without first
                obtaining the consent in writing of the Landlord such consent
                not to be unreasonably withheld or delayed

        (b)     Not at any time during the Term to make any alteration or 
                addition to the electrical installation of the Demised Premises
                save in accordance with the terms and conditions laid down by
                the Institution of Electrical Engineer's and the Regulations of
                the Electrical Supply Authority;

        (c)     Not at any time during the Term to erect set up or maintain or 
                suffer to be erected set up or maintained on the Demised
                Premises or any part thereof any building shed or similar
                structure whether of a permanent or temporary character

        (d)     Not at any time during the Term to make any change to the 
                external design or appearance of the building constructed on the
                Demised Premises

        (e)     Not to cut maim alter or injure or suffer to be cut maimed 
                altered or injured the Main Structure nor make any external or
                internal alterations in the plan or elevation of the building on
                the Demised Premises or in any party or other wall nor alter or
                change any of the materials or architectural decorations of the
                said building nor make or maintain or suffer to be made or
                maintained any addition thereto either in height or projection
                save that if any such alterations as aforesaid are necessary
                become of a permitted underletting of an Individual Unit then
                the provisions of Clause 4(18)(g) hereof shall apply thereto
                mutatis mutandis




                                      -22-
<PAGE>   37
        (f)     Not at any time during the Term to overload the floors or 
                ceilings or the Main Structure in any way which imposes a weight
                or strain in excess of that which the building on the Demised
                Premises is constructed to bear with due margin for safety or
                which will in any way strain or interfere with the Main
                Structure

        (g)     Not to make any nonstructural erection addition or alteration 
                whatsoever to the Demised Premises (including to walls timbers
                wires pipes drains appurtenances fixtures or fittings thereof)
                without the previous consent in writing of the Landlord (which
                consent shall not be Unreasonably withheld or delayed) such
                consents to be without prejudice nevertheless to the provisions
                of this and sub-clauses (13) (14) and (26) hereof nor except in
                accordance with plans and specifications (with such additional
                copies thereof as the Landlord may reasonably require)
                previously submitted to and approved in writing by the Landlord
                nor carried out except to the satisfaction of its Surveyor

        (h)     Nothing herein contained in this sub-clause (18) shall prevent 
                the Tenant from installing or removing internal nonstructural
                demountable partitioning in the Demised Premises without the
                Landlord's consent provided such works do not adversely affect
                the services in the Demised Premises and the Tenant shall supply
                the Landlord with plans detailing the internal layout of the
                Demised Premises then current on demand by the Landlord

        (i)     Any alterations or additions carried out to the Demised 
                Premises shall at the end or sooner determination of the Term be
                reinstated by the Tenant if requested in writing by the Landlord
                so to do

(19)    SIGNS

                                      -23-
<PAGE>   38
        (1)     Not without the Previous written consent of the Landlord and 
                the Superior Lessor (such consents not to be unreasonably
                withheld) to carry out or permit the painting or writing of any
                notice or advertisement whatsoever whether permanent or
                temporary on the glass of the windows or doors of the building
                on the Demised Premises or (except with the previous written
                consent of the Landlord and the Superior Lessor) the affixing or
                display of any bill notice doorplate sign or advertisement which
                projects over any street or land over when the public has access

        (2)     Without prejudice to the provisions of sub-clause (19)(1) of 
                this Clause not to exhibit put up or permit upon any part of the
                exterior of the building on the Demised Premises and the open
                areas thereof without the previous consent in writing of the
                Landlord and the Superior Lessor (such consents not to be
                unreasonably withheld or delayed) any bill notice sign or
                advertisement other than such as relate solely to the Tenant its
                undertenant or other occupier's business for the time being
                carried on at the Demised Premises PROVIDED and it is hereby
                declared that if any bill notice sign or advertisement displayed
                in or upon any part of the exterior of the building on the
                Demised Premises or in or upon any part of the interior of the
                building on the Demised Premises which is visible from outside
                the building on the Demised Premises shall in the reasonable
                opinion of the Landlord or the Superior Lessor be unsightly
                undesirable or objectionable then the same shall be removed by
                the Tenant within twenty-four hours after the receipt by the
                Tenant of notice requiring the Tenant so to do

(20)    ALIENATION ETC

                                      -24-
<PAGE>   39
(a)     COMPLETE BAR ON CERTAIN DEALINGS

        Not to assign underlet or part with possession or part with or share 
        occupation of the Demised Premises or any part thereof save as 
        hereinafter provided 

(b)     SHARING OCCUPATION

        The Tenant may share occupation or possession of any part of the 
        Demised Premises with any member of the group of companies (as defined
        in Section 42(1) of the Landlord and Tenant Act 1954) of which the
        Tenant is itself a member on the condition that:-

        (i)     no relationship of landlord and tenant is created between the
                Tenant and any such company

        (ii)    the possession or occupation shall forthwith be determined if 
                the Tenant and the relevant member shall cease for any reason 
                whatsoever to be members of the same group of companies

        (iii)   On written request from the Landlord or its agents the Tenant 
                shall supply in writing to the Landlord or its agents details 
                of the identity of any company as aforesaid let into occupation

(c)     ASSIGNING THE WHOLE

        Not to assign the whole of the Demised Premises

        (i)     without the Landlord's prior written consent such consent not 
                to be unreasonably withheld or delayed and

        (ii)    except to an assignee who shall first have

                                      -25-
<PAGE>   40
                (a)     entered into a direct covenant with the Landlord to 
                        observe and perform the covenants and conditions on 
                        the part of the Tenant contained in this lease

                (b)     if reasonably so required by the Landlord procured a 
                        covenant with the Landlord by an acceptable guarantor or
                        guarantors in the terms (mutatis mutandis) set out in 
                        the Third Schedule hereto or in such other form as the 
                        Landlord may reasonably require

(d)     UNDERLETTING THE WHOLE

        Not to underlet the whole of the Demised Premises

        (i)     without the Landlord's prior written consent such consent not 
                to be unreasonably withheld

        (ii)    except to an underlessee who shall first have

                (a)     entered into a covenant with the Landlord to observe 
                        and perform the covenants and conditions on the part 
                        of the Tenant contained in this lease (other than the 
                        covenant to pay rent) and

                (b)     if reasonably so required by the Landlord (in the case 
                        of an underlease for a term of more than 3 years) 
                        procured a covenant with the Landlord by an acceptable 
                        guarantor or guarantors in the terms (mutatis mutandis)
                        set out in the Third Schedule hereto or in such other 
                        form as the Landlord may reasonably require

                                      -26-
<PAGE>   41
(iii)   in consideration of any fine or premium

(iv)    without reserving a yearly rent payable in advance on the usual quarter 
        days equal to the then open market yearly rental value of the Demised
        Premises and where the underlease is for a term of more than 3 years
        such rent shall be reviewable on the same dates and on the same terms as
        the rent payable under this lease and

(v)     except on similar covenants and conditions to those contained in this 
        lease and in particular:

        (a)     for the re-entry on breach of any covenant in the underlease

        (b)     that the underlease will contain similar terms as to the 
                carrying out of and the paying for repairs and proper service 
                charges

(vi)    without taking from any underlessee unqualified covenants (which the 
        Tenant shall enforce):

        (a)     not to assign or underlet the whole of the Demised Premises 
                without prior written consent of the Landlord (under this 
                lease) such consent not to be unreasonably withheld or delayed 
                and

        (b)     not to deal in any other way whatsoever with the Demised 
                premises or any part thereof and

        (c)     to obtain from any assignee of the underlease a covenant with 
                the Landlord (under this lease) to observe and perform

                                      -27-
<PAGE>   42
                        the covenants and conditions on the part of the Tenant
                        contained in this lease (other than the covenant to pay
                        rent) during the term granted by the underlease

(e)     UNDERLETTING AN INDIVIDUAL UNIT

        Not to underlet an Individual Unit

        (i)     without the Landlord's prior written consent such consent not to
                be unreasonably withheld or delayed

        (ii)    without the Tenant erecting or procuring the erection of an 
                internal division wall between the Individual Unit and the
                remaining Unit details of which having been supplied to the
                Landlord in accordance with Clause 4(18)(g) hereof (and for the
                avoidance of doubt the provisions of Clause 4(18)(g) hereof
                shall apply hereto) and without the Tenant complying with all
                statutory requirements insurers requirements and fire authority
                requirements or recommendations in relation thereto

        (iii)   except to an underlessee who shall first have

                (a)     save in the case of an underletting of less than three 
                        years entered into a covenant with the Landlord to
                        observe and perform the covenants and conditions on the
                        part of the Tenant contained in this lease (other than
                        the covenant to pay rent and insofar as they are
                        applicable to the underletting of an Individual Unit)
                        and

                                      -28-
<PAGE>   43
        (b)     if reasonably so required by the Landlord (in the case of an 
                underlease for a term of more than three years) procured a
                covenant with the Landlord by an acceptable guarantor or
                guarantors in the terms (mutatis mutandis) set out in the Third
                Schedule hereto or in such other form as the Landlord may
                reasonably require

(iv)    in consideration of any fine or premium

(v)     without reserving a yearly rent payable in advance on the usual quarter 
        days equal to the then open market yearly rental value of the Individual
        Unit and where the underlease is for a term of more than three years
        such rent shall be reviewable on the same dates and on the same terms as
        set out in Clause 3 hereof

(vi)    (a)     except by way of an underlease providing for the re-entry on 
                breach of any covenant in the underlease

        (b)     save in the case of an underletting of less than three years 
                except on similar covenants and conditions to those in this
                lease (insofar as they are applicable to the underletting of an
                Individual Unit) and in particular that the underlease will
                contain similar terms as to the carrying out or paying for
                repairs and proper services charges

(vii)   without taking from any underlessee unqualified covenants (which the 
        Tenant shall enforce):

                                      -29-
<PAGE>   44
                (a)     not to assign the underlet Individual Unit without the 
                        prior written consent of the Landlord (under this lease)
                        such consent not to be unreasonably withheld or delayed
                        and

                (b)     not to deal in any other way whatsoever with the 
                        Demised Premises or any part thereof

                (c)     save in the case of an underletting of less than three 
                        years to obtain from any assignee of the underlet
                        Individual Unit a covenant with the Landlord (under this
                        lease) to observe and perform the covenants and
                        conditions on the part of the Tenant contained in this
                        lease (other than the covenant to pay rent) during the
                        term granted by the underlease insofar as such covenants
                        and conditions relate to the underlet Individual Unit

(f)     UNDERLEASES FOR LESS THAN 3 YEARS

        Any underlease for a term of three years or less shall exclude the 
        provisions of section 24 to 28 (inclusive) of the Landlord and Tenant 
        Act 1954 by way of agreement authorised by the Court

(g)     RENT REVIEWS UNDER UNDERLEASES

        To procure that in any underletting the yearly rent is reviewed under 
        such under lease in accordance with the terms of the underlease but not
        to agree any rent on review under any underlease without the prior
        written consent of the Landlord such consent not to be unreasonably
        withheld and (if the rent under the underlease is to be awarded by an
        arbitrator in

                                      -30-
<PAGE>   45
                accordance with the provisions therein contained) to procure 
                that the Landlord's representations as to the yearly rent 
                payable thereunder are made to the arbitrator to the 
                reasonable satisfaction of the Landlord

        (h)     ENFORCEMENT OF COVENANTS

                To enforce the performance and observance by every underlessee 
                of the provisions of the underlease (whether of the whole of the
                Demised Premises or an Individual Unit) and not at any time
                either expressly or by implication to waive any breach of the
                covenants or conditions on the part of the under lessee or
                assignee of any underlease nor without the consent of the
                Landlord (such consent not to be unreasonably withheld) to vary
                the terms

        (i)     AGREEMENT

                It is hereby expressly agreed and declared that if the Landlord 
                (acting reasonably) shall not be satisfied that the yearly rent
                to be reserved by a proposed underlease is in accordance with
                sub-clauses (20(d)(iv) or (20)(e)(v) of this Clause 4 (as the
                case may be) then the Landlord may refuse its consent to such
                underletting and such refusal shall be deemed to be reasonable

(21)    TO REGISTER ANY DISPOSITION

        To give notice in writing of every assignment assent transfer under 
        lease change of name charge or devolution of or other instrument
        relating to or affecting the Demised Premises and to produce a certified
        copy of the same within twenty one days after the execution or grant
        thereof to the solicitors of the Landlord and to pay their reasonable
        registration fee

                                      -31-
<PAGE>   46
        (and that of the Superior Lessor) in respect of each such instrument 
        PROVIDED THAT registration of any such document shall not require the
        Landlord to consider the terms thereof and shall not be evidence that it
        has done so

(22)    RE-LETTING

        To permit the Landlord and the Superior Lessor or their agents at any 
        reasonable time in the daytime on prior notice to enter upon the Demised
        Premises and to affix upon any appropriate or suitable part thereof a
        notice board or boards for re-letting at any time six months prior to
        the expiration or sooner determination of the Term or at any time for
        selling and to permit all persons authorised by order in writing of the
        Landlord or its agents to view the Demised Premises at reasonable hours
        in the day time without interruption

(23)    EASEMENTS

        To take all necessary steps to prevent any encroachment upon the 
        Demised Premises or the acquisition of any new right to light passage
        drainage or other easement over upon or under the Demised Premises and
        to give notice in writing to the Landlord of any threatened encroachment
        or attempt to acquire any such easement and throughout the Term to
        preserve unobstructed and undefeated all rights of light and other
        easements appertaining to the Demised Premises and not to permit or
        suffer but give notice in writing to the Landlord of any act matter or
        thing whereby a new easement or encroachment might come to be made into
        against over or upon the Demised Premises or any part thereof and to do
        all such things as the Landlord may reasonably require to prevent the
        same

(24)    LANDLORD'S COSTS

                                      -32-
<PAGE>   47
        To pay to the Landlord on an indemnity basis all reasonable and proper
        Solicitors' (as between a Solicitor and own client) counsels' surveyors'
        and other professional costs expenses and fees incurred by the Landlord

        (a)     In or in contemplation of any proceedings relating to the 
                Demised Premises whether or not under Sections 146 or 147 of the
                Law of Property Act 1925 or the preparation and service of a
                notice thereunder (whether or not any right of re-entry or
                forfeiture has been waived by the Landlord or a notice served on
                the Tenant has been complied with or the Tenant has enjoyed
                relief under the provisions of the said Act or forfeiture is
                avoided otherwise than by relief granted by the Court) and to
                keep the Landlord fully and effectively indemnified against all
                costs expenses claims and demands whatsoever in respect of such
                proceedings

        (b)     In the preparation and service of a schedule of dilapidations 
                at any time during or after the Term and in the inspection of
                the works which are the subject of such schedule whether during
                or after the carrying out thereof

        (c)     In connection with the recovery of any arrears of the rents 
                hereby reserved

        (d)     In respect of any application for consent required by this 
                lease whether or not such consent is granted

(25)    TO YIELD UP

        At the expiration or sooner determination of the Term quietly to yield 
        up the Demised premises and any additions thereto so repaired painted
        cleansed maintained amended kept renewed and replaced as aforesaid

                                      -33-
<PAGE>   48
(26)    THE SUPERIOR LEASE ETC

        At all times during the Term to observe and perform the obligations on
        the part of the Landlord contained in the Superior Lease (except the
        obligation to pay the premium and the obligations in clause 2(4)(i)(ii)
        and (iii)) insofar as the same relate to or affect the Demised Premises
        and to keep the Landlord fully and effectually indemnified against all
        actions proceedings damages costs expenses claims and demands whatsoever
        in respect of any breach thereof

(27)    VALUE ADDED TAX

        Whenever in this lease provision is made for the Tenant to pay any sum
        (including but without prejudice to the generality of the foregoing rent
        legal costs registration fees surveyors and other professional fees
        charges and expenses) on which Value Added Tax is payable or may at the
        election of the Landlord be payable (and provided that the Landlord does
        so elect) then the Tenant shall pay in addition to such sum Value Added
        Tax thereon at the rate appropriate at the time of supply Provided That
        where the Value Added Tax supply is to the Tenant the Landlord shall
        provide the Tenant with a VAT invoice addressed to and in favour of the
        Tenant and where the VAT supply is to the Landlord the Tenant shall pay
        to the Landlord only that part of the Value Added Tax which the Landlord
        is not entitled to recover

(28)    PIPES AND DRAINS

        Not to obstruct or permit the obstruction of any pipes including the
        drains serving the Demised Premises by oil grease hair or other
        deleterious matter but to keep all pipes and drains in or serving the
        Demised Premises thoroughly cleaned as often as may be necessary

                                      -34-
<PAGE>   49
5.      THE Landlord hereby covenants with the Tenant that:-

        (1)     QUIET ENJOYMENT

                The Tenant paying the rents hereby reserved and performing and 
                observing the several covenants conditions and agreements herein
                contained and on the Tenant's part to be performed and observed
                may peaceably and quietly hold and enjoy the Demised Premises
                during the Term without any lawful interruption by the Landlord
                or any person rightfully claiming under or in trust for the
                Landlord

        (2)     THE SUPERIOR LEASE ETC

                To observe and perform the covenants on the part of the 
                Landlord contained in the Superior Lease but only so far as the
                Superior Lessor shall require the same to be observed and
                performed and except as they are by this lease expressly assumed
                by the Tenant

        (3)     TO INSURE

                To insure or cause to be insured the Demised Premises and all
                Landlord's fixtures and fittings therein or thereon of an
                insurable nature (other than those which the Tenant or other
                tenants may be entitled to remove) including all the glass
                herein (save for plate and other glass insured by the Tenant
                pursuant to clause 4(7)(i)) against (i) loss or damage by the
                Insured Risks in such sum (including any incidental expenses) as
                shall be determined from time to time by the Landlord to
                represent the reinstatement cost thereof as new together with
                all professional and other fees and expenses and the cost of
                site clearance and other incidental expenses (ii) public
                liability of the Landlord involving or relating to the Demised
                Premises or any part thereof and (iii) the loss of four years
                rent in some insurance office of repute 

                                      -35-


<PAGE>   50
        and to supply a summary of such insurance and evidence of payment of the
        current premium to the Tenant on request once yearly and in the case of
        destruction or damage to the Demised Premises by any Insured Risk to
        immediately notify the insurer on receiving notification from the Tenant
        of the damage or destruction and to claim all sums due under the
        insurance policy and use all reasonable endeavours to procure the
        payment by the insurer of all sums properly due under the insurance
        policy and apply for and use all reasonable endeavours to obtain all
        planning permissions building regulations consents and other consents or
        licences necessary to enable the Landlord to reinstate the Demised
        Premises and (unless payment of any money payable under any policy of
        insurance shall be wholly or partly withheld or refused either in
        consequence of any exclusion or qualification imposed by insurers or of
        any act neglect or default of the Tenant its undertenants or their
        respective servants agents or licensees) to ensure that all insurance
        moneys (other than for loss of rent and public liability) received by
        the Landlord are with all convenient speed (subject to the necessary
        labour and materials being procurable and to all necessary statutory
        consents being obtained) laid out and applied in rebuilding repairing or
        otherwise reinstating the Demised Premises and to make up any deficiency
        out of its own monies

(4)     INSURANCE PROCEEDS

        Subject to the provisions for reinstatement contained in sub-clause (3)
        of this Clause 5 the building Insurance proceeds shall belong to the
        Landlord for its own use and benefit absolutely

(5)     NOTIFICATION

                                      -36-
<PAGE>   51
                The Landlord will notify its insurers of the Tenant's interest 
                in the Demised Premises and have it noted on the policy or 
                policies of insurance 

6.      PROVIDED ALWAYS and it is hereby agreed and declared as follows:-

        (1)     FORFEITURE AND RE-ENTRY

                That this lease is made upon the express condition that if (a) 
                any of the rents hereby reserved shall be unpaid for twenty one
                days after the due dates whether the same shall have been
                lawfully demanded or not or (b) any Tenant's covenant shall not
                have been observed or performed or (c) if the Tenant being an
                individual or firm shall become bankrupt or be the subject of an
                interim order under Part VIII of the Insolvency Act 1986 or
                being a Company shall go into either compulsory or voluntary
                liquidation (except for the purpose of reconstruction or
                amalgamation) or shall have an administration order made in
                respect of it under the Insolvency Act 1986 or if an
                administrative receiver or a receiver shall be appointed or (d)
                the Tenant shall enter into composition or arrangement with
                creditors or shall suffer any distress or execution to be levied
                on the goods of the Tenant then and in any of the said cases and
                at any time thenceforth it shall be lawful for the Landlord or
                its authorised agent to re-enter into or upon the Demised
                Premises and to repossess and enjoy the same as if this lease
                had not been made but without prejudice to any right of action
                or remedy of either party in respect of any antecedent breach of
                any of the covenants by the other herein contained

        (2)     RENT CESSER

                If during the Term the Demised Premises or any part thereof 
                shall be destroyed or damaged by any Insured Risk so as to be 
                unfit for occupation or use and the policy of insurance

                                      -37-
<PAGE>   52
        effected by the Landlord shall not have been vitiated or payment of the
        policy moneys wholly or partly withheld or refused by reason of any act
        neglect or default of the Tenant its undertenants or their respective
        servants agents or licensees the First Reserved Rent or a fair
        proportion thereof according to the nature and extent of the damage
        sustained shall be suspended until the Demised Premises shall again be
        fit for occupation and use or until the expiration of four years from
        the date of the damage or destruction whichever shall be the earlier and
        any dispute shall be referred to the award of a single arbitrator to be
        appointed in default of agreement upon the application of either party
        by the President for the time being of the Royal Institution of
        Chartered Surveyors in accordance with the provisions of the Arbitration
        Acts 1950 and 1979 or any statutory modification thereof for the time
        being in force

(3)     DETERMINATION BY EITHER PARTY

        If within four years from the date of such damage or destruction as
        aforesaid of the Demised Premises reinstatement or rebuilding of the
        Demised Premises has not been practically completed then after the
        expiration of the said four year period but only before such practical
        completion as aforesaid either party may give written notice to the
        other terminating this lease three months from the date of such notice
        whereupon this lease shall absolutely determine and the rights and
        obligations of the parties shall cease but without prejudice to any
        right or claim arising hereunder and still subsisting at the date of
        determination

(4)     DETERMINATION BY TENANT

        (a)     At any time before 25th November 2002 the Tenant may serve a 
                notice to terminate the Term on 25th December 2003 and if it 
                does so and if the Tenant delivers to the

                                      -38-
<PAGE>   53
                Landlord vacant possession of the Demised Premises by 12 noon on
                25th December 2003 the Term will end at 12 noon on 25th December
                2003 (rent being paid for all that day) but the termination will
                not affect any claim by either party in respect of antecedent
                breaches of the provisions of this lease

        (b)     The provisions of clause 6(4)(a) hereof shall be null and void 
                if the Tenant (with the consent of the Landlord under this
                lease) grants an underlease of the whole of the Demised Premises
                or an Individual Unit at any time before 25th December 2003
                which does not comply with the provisions of sub-paragraph (d)
                hereof save if the Landlord at its discretion releases the
                provisions of this clause 6(4)(b) in the Licence to Underlet

        (c)     Notwithstanding the provisions of clauses 4.20(d) and (e) of 
                this lease the Tenant shall not underlet the whole of the
                Demised Premises or an Individual Unit after a notice to
                terminate has been served by the Tenant pursuant to clause
                6(4)(a) hereof

        (d)     The provisions of sub-paragraphs (b) and (c) above shall not 
                apply in circumstances where an underlease contains an agreement
                authorised by the Court excluding the provisions of Sections
                24-28 (inclusive) of the Landlord and Tenant Act 1954 and is for
                a term which expires on or before 12 noon on 25th December 2003

(5)     NOTICES

        The provisions of section 196 of the Law of Property Act 1925 as amended
        by the Recorded Delivery Service Act 1962 shall apply to all notices
        required to be served under this lease

(6)     MORTGAGEES AND SUPERIOR LESSOR

                                      -39-
<PAGE>   54
        In this lease the powers rights matters and discretions reserved to or
        exercisable by the Landlord including powers to enter inspect repair
        maintain or alter the Demised Premises or any part of the Landlord's
        adjoining premises shall also be reserved to or exercisable by its
        Mortgagees and by the Superior Lessor and their respective servants
        agents or workmen

(7)     SUPERIOR LESSOR'S CONSENT

        In this lease where the consent of the Landlord is required to any
        matter the Superior Lessor's consent shall also be obtained by the
        Tenant if appropriate

(8)     DISPUTES

        Any dispute arising as between the Tenant and the lessee or occupier of
        any adjacent or neighbouring premises belonging to the Landlord as to
        any easement right or privilege enjoyed or used in common shall be
        decided by the Landlord or the Landlord's Surveyor whose decision (save
        in the case of manifest error) shall be binding upon all parties to the
        dispute

(9)     RIGHTS OF ENTRY

        Notwithstanding anything contained in this Lease all rights of entry
        into the Demised Premises (whether by the Landlord its employees or
        agents or other owners tenants or occupiers of the Landlord's adjoining
        or neighbouring property) shall only be exercised in the company of an
        escort provided by the Tenant and the Tenant undertakes to provide such
        escort when required

(10)    RELEASE OF TENANT

                                      -40-
<PAGE>   55
        (a)     Subject to compliance with the provisions of clause 4(20)(c)
                then upon and with effect from completion of a lawful assignment
                of the whole of the Demised Premises by the person at that time
                being the Tenant ("the Assignor") to another ("the Assignee")
                where either the Assignor is a Qualifying Person or the Assignee
                is a Qualifying Person the Assignor shall cease to have any
                liability for any future breach or non observance or non
                performance of the covenants on the part of the Tenant contained
                in this Lease and any surety of the Assignor shall cease to have
                any liability for any future breach or non observance or non
                performance of the covenants on the part of the Tenant contained
                in this Lease pursuant to any covenants given in any guarantee
                or agreement between such surety and the Landlord PROVIDED
                ALWAYS

                (i)     that the Assignor and any surety of the Assignor shall
                        nevertheless remain liable in respect of any subsisting
                        breach of the said covenants occurring prior to the date
                        of the lawful assignment; and

                (ii)    that the Assignor and any surety of the Assignor shall
                        enter into a Deed of Guarantee whereby the Assignor and
                        any surety of the Assignor covenants with the Landlord
                        as surety (in the form reasonably acceptable to it)
                        incorporating a standard of obligations similar to those
                        set out in Third Schedule hereto but adapted to suit the
                        circumstances in which the guarantee is given for the
                        period during which the Assignee remains liable as
                        tenant under the terms of this Lease.

        (b)     If the Assignor and any surety of the Assignor are not released
                from their respective liabilities by the

                                      -41-
<PAGE>   56
        operation of this clause 6(10) because neither the Assignor or the
        Assignee is a Qualifying Person then the Assignor and any surety of the
        Assignor shall in any event cease to have any liability for any future
        breach or non observance or non performance of the covenants on the part
        of the Tenant contained in this Lease with effect from the date of the
        first lawful assignment thereafter by a person at that time being the
        Tenant to another where either of those persons is a Qualifying Person.

(11)    INTERPRETATION

        (a)     Whenever the Demised Premises are vested in more than one 
                person for the Term every covenant on the part of the Tenant 
                herein contained shall be deemed to be made jointly and 
                severally by those persons

        (b)     Words importing the masculine gender shall include the feminine 
                gender and words in the singular shall include the plural

        (c)     The clause headings hereto shall not affect in any way the 
                construction of this lease

(12)    DELIVERY

        The provisions of this lease (other than those contained in this 
        clause) shall have no effect until this lease has been dated

(13)    AGREEMENT FOR LEASE

        It is hereby certified that there is an agreement for lease to which 
        this lease gives effect

                                      -42-

<PAGE>   57
7.      SURETY COVENANTS

The Surety hereby covenants with the Landlord as follows:-

(1)     That the Tenant will throughout the Term and also during such period as 
        the Tenant remains in occupation of the Demised Premises pay the rents 
        hereby reserved on the days and in manner aforesaid and shall duly 
        perform and observe all the covenants hereinbefore on the Tenant's part
        contained and that in the event of the Tenant failing to do so the 
        Surety will indemnify and keep indemnified the Landlord from and 
        against all actions claims demands costs losses and expenses which may 
        be brought or made against or sustained or incurred by the Landlord 
        howsoever arising directly or indirectly out of or in connection with 
        such failure PROVIDED ALWAYS and it is hereby agreed that any neglect 
        or forbearance of the Landlord in endeavouring to obtain payment of the 
        several rents when the same become payable or to enforce performance or 
        observance of the Tenant's covenants and any time which may be given by 
        the Landlord to the Tenant shall not release or exonerate or in any 
        way affect the liability of the Surety under this covenant

(2)     That if for any reason the term hereby granted shall be prematurely 
        determined by forfeiture or if the same shall be disclaimed in 
        circumstances releasing the Tenant from liability the Surety will (if 
        so required by the Landlord within 60 days of the date of such 
        forfeiture or disclaimer) accept from the Landlord a grant of a new 
        lease of the Demised Premises from the date of such determination or 
        disclaimer for the residue of the Term then unexpired at the same 
        several rents hereinbefore reserved and subject to the like covenants 
        and provisos as are herein contained and at the expense of the Surety 
        and on the execution of such further lease the Surety shall execute and 
        deliver to the Landlord a counterpart thereof or (as the case may be) 
        the Surety shall accept the vesting in it of this lease

(3)     That if the Landlord shall not require the Surety to take a lease of 
        the Demised Premises pursuant to Clause 7(2) above the Surety shall 

                                      -43-
<PAGE>   58
        nevertheless upon demand pay to the Landlord a sum equal to the rent and
        to all other payments that would have been payable under this lease but
        for the disclaimer in respect of the period from the date of the said
        disclaimer until the expiration of six months therefrom or until the
        Demised Premises shall have been relet by the Landlord whichever shall
        first occur

(4)     The Surety represents and warrants to the Landlord that the Surety has 
        full power authority and legal right to enter into the covenants 
        contained in this Clause 7

(5)     The rights and obligations of the parties hereto shall be governed and 
        construed in accordance with English law

(6)     The Surety hereby irrevocably:-

        (a)     agrees that the Courts of England and Wales shall have 
                jurisdiction to hear and determine any suit action or 
                proceeding arising out of or relating to this lease (including 
                this Clause 7) and

        (b)     waives to the fullest extent permitted by law any objection 
                which the Surety may now or hereafter have to the jurisdiction 
                of the Courts of England and Wales to hear and determine any 
                suit action or proceeding arising out of or relating to this 
                lease (including this Clause 7) or any claim that any such 
                Court is not a convenient or appropriate forum

(7)     The submission to the jurisdiction of the Courts referred to in Clause 
        7(6) shall not (and shall not be construed as to) limit the right of 
        the Landlord to take proceedings against the Surety in any other Court

                                      -44-
<PAGE>   59
        of competent jurisdiction nor shall the taking of proceedings in any one
        or more jurisdictions preclude the taking of proceedings in any other
        jurisdiction whether concurrently or not

IN WITNESS whereof the parties have executed this lease as a Deed the day and 
year first before written

                      THE FIRST SCHEDULE above referred to

                                     PART 1

                                 TENANTS RIGHTS

1.      A right during the Term to uninterrupted passage and running of water 
        soil drainage gas electricity and telephone lines and other services (in
        common with the Landlord and the Superior Lessor and all other persons
        having the like right) through the sewers pipes drains cables wires or
        other conducting media in the Landlord and the Superior Lessor's
        property adjoining or neighbouring the Demised Premises all such rights
        to cease and determine as and when and to the extent from time to time
        that the said services shall become adopted and maintainable at public
        expense and the right to enter upon the said adjoining or neighbouring
        property of the Landlord and the Superior Lessor to make any necessary
        connections thereto or to cleanse repair renew the same the person
        exercising such right causing as little inconvenience as possible and
        making good any damage thereby caused to the property so entered

2.      With the Landlord's prior written consent (not to be unreasonably 
        withheld or delayed) and upon reasonable prior written notice given to
        the Landlord and all other persons affected thereby the right of access
        into and upon the adjacent premises of the Landlord as may be requisite
        to enable the Tenant to comply with the Tenant's obligations herein
        contained subject to causing as little inconvenience as possible and
        making good any damage caused

                                      -45-
<PAGE>   60
3.      The right during the Term to exhibit the Tenant's name and business 
        details in such manner as the Landlord shall reasonably decide on the
        name board sign erected by the Landlord at the junction of Home Farm
        Road with Lewes Road pursuant to the provisions of the Superior Lease

4.      The right at reasonable times and on reasonable notice (except in 
        emergency) to the Landlord and the tenant or occupier of Unit 2 to enter
        Unit 2 for the purposes of repairing and maintaining the Soakaways
        subject to making good any damage to Unit 2 caused by such entry

                                     PART 2

                                LANDLORDS RIGHTS

1.      Unto the Landlord and the Superior Lessor and all persons now or 
        hereafter entitled thereto the right of free and uninterrupted passage
        and running of water soil drainage gas electricity telephone lines and
        other services from and to any adjoining or neighbouring property by or
        through the sewers pipes drains cables wires conduits and ducts and
        other conducting media which are or may hereafter during the Term be in
        under or upon the Demised Premises and the right to use the Soakaways
        for the purposes of drainage of rainwater and surface water from Unit 1
        but all such rights hereinbefore reserved shall cease and determine as
        and when and to the extent from time to time that the said services
        shall become adopted and maintainable at public expense

2.      Unto the Landlord and the Superior Lessor and their respective tenants 
        the right at any time and from time to time hereafter to build upon and
        use any of their adjoining or neighbouring land and rebuild or alter any
        of the buildings now or hereafter to be erected thereon according to
        such plans (whether as to height extent or otherwise) and in such manner
        as they deem fit notwithstanding any interference thereby occasioned to
        the access of light and air to the Demised Premises or any buildings now
        or hereafter to be erected on the site thereof

                                      -46-
<PAGE>   61
3.      Unto the Landlord and the Superior Lessor all of the air over a level 
        of two metres above the ridge level of the building now constructed on
        the Demised Premises as shown on the drawing numbered 2 annexed hereto
        such level to extend horizontally over the building and elsewhere over
        the site thereof and over a level of one metre above the level of the
        fence now erected along the rear boundary of the Demised Premises

4.      Unto the Landlord with or without workmen and others the right to enter 
        upon the Demised Premises for the purpose of carrying out the works
        referred to in paragraph 5 of Part 1 of the Second Schedule hereto

5.      Unto the Landlord and (in addition in the case of the right reserved
        in paragraph (iii) below the Landlord's tenant or tenants of Unit 2 or
        other the owner or occupier of Unit 2) all persons authorised by the
        Landlord the right at reasonable times and on reasonable notice (except
        in emergency) to enter the Demised Premises for the purposes of (i)
        inspecting the condition and state of repair thereof (ii) carrying out
        any works (whether of repair or otherwise) for which the Tenant is
        liable and which the Tenant has failed to carry out pursuant to Clause
        4(4) and (8) hereof (iii) carrying out any works (whether of repair or
        otherwise) to any property adjoining the Demised Premises or to any
        party structure sewer drain or other thing used by the Tenant in common
        with others (including without prejudice to the generality of the
        foregoing the Soakaways) subject to making good any damage to the
        Demised Premises caused by such entry

                     THE SECOND SCHEDULE above referred to

                                     PART 1

                                 SERVICE COSTS

1.      The repair maintenance and replacement from time to time of any drains 
        pipes cables and wires or other conducting media under any property
        adjoining or neighbouring the Demised Premises until such time and to

                                      -47-
<PAGE>   62
        the extent that the drains pipes cables and wires or other conducting 
        media shall become adopted and maintainable at public expense

2.      Discharging all rates taxes assessments duties and impositions payable 
        in respect of the common parts of the adjoining or neighbouring property
        of the Landlord the use of which is shared by the Tenant with others

3.      Constructing repairing rebuilding and cleansing all party walls and 
        fences and also sewers drains pipes wires and other things the use of
        which is common to the Demised Premises and any other premises and the
        said name board referred to in paragraph 3 of Part 1 of the First
        Schedule hereto

        Maintaining and repairing the Grassed and Planted Areas save for any 
        part of that area which is demised to a tenant

5.      Maintaining and keeping the landscaped areas within the Demised 
        Premises well and properly cultivated and trimmed and cut and free from
        weeds and in a tidy condition and to ensure that the said landscaped
        areas are fully planted out with appropriate plants and shrubs

6.      Providing such other services or carrying out any other work which the 
        Landlord shall from time to time reasonably consider necessary for the
        benefit of the Demised Premises and any other premises on the Landlord's
        adjoining or neighbouring property

7.      Management of the Demised Premises and the adjoining or neighbouring 
        property of the Landlord by the Landlord's surveyor the reasonable and
        proper management fee of the Landlord's Surveyor not to exceed 12-1/2%
        of the total cost incurred by the Landlord for the provision of the
        services referred to in this Part 1 of the Second Schedule hereto

                                      -48-
<PAGE>   63
                                     PART 2

                                 SERVICE CHARGE

1.      The Service Charge to be paid by the Tenant shall be such fair 
        proportion (which may if appropriate be the whole amount) of the actual
        or anticipated Service Costs for each Service Charge Year which shall be
        assessed by the Landlord's Surveyor according to a reasonable and proper
        basis for apportionment applicable from time to time to the Demised
        Premises and the rights hereby granted

2.      The Landlord may make and send to the Tenant notice in writing of the 
        Landlord's estimate of the anticipated Service Costs and the Service
        Charge applicable to the Demised Premises for each Service Charge Year
        and the Tenant shall pay such estimate of the Service Charge by equal
        quarterly instalments in advance on the usual quarter days

3.      The Landlord will (unless prevented by causes beyond its control) 
        prepare and send to the Tenant a detailed statement of the actual
        Service Costs and Service Charge for each Service Charge Year as soon as
        practicable after the end of such year and in the event of the Service
        Charge for the Demised Premises exceeding the aggregate amount paid by
        the Tenant for such year the Tenant will pay the balance due to the
        Landlord forthwith and in the event of the aggregate amount being
        greater the excess will be credited by the Landlord by way of set-off
        against the next instalment of Service Charge due from the Tenant

                      THE THIRD SCHEDULE above referred to

1.      That the Tenant will throughout the Term and also during such period as 
        the Tenant remains in occupation of the Demised Premises pay the rents
        hereby reserved on the days and in manner aforesaid and shall duly
        perform and observe all the covenants hereinbefore on the Tenant's part
        contained and that in the event of the Tenant failing to

                                      -49-
<PAGE>   64
        do so the Surety will indemnify and keep indemnified the Landlord from
        and against all actions claims demands costs losses and expenses which
        may be brought or made against or sustained or incurred by the Landlord
        howsoever arising directly or indirectly out of or in connection with
        such failure PROVIDED ALWAYS and it is hereby agreed that any neglect or
        forbearance of the Landlord in endeavouring to obtain payment of the
        several rents when the same become payable or to enforce performance or
        observance of the Tenant's covenants and any time which may be given by
        the Landlord to the Tenant shall not release or exonerate or in any way
        affect the liability of the Surety under this covenant

2.      That if for any reason the term hereby granted shall be prematurely 
        determined by forfeiture or if the same shall be disclaimed in
        circumstances releasing the Tenant from liability the Surety will (if so
        required by the Landlord) accept from the Landlord a grant of a new
        lease of the Demised Premises from the date of such determination or
        disclaimer for the residue of the Term then unexpired at the same
        several rents hereinbefore reserved and subject to the like covenants
        and provisos as are herein contained and at the expense of the Surety
        and on the execution of such further lease the Surety shall execute and
        deliver to the Landlord a counterpart thereof or (as the case may be)
        the Surety shall accept the vesting in it of this lease

3.      That if the Landlord shall not require the Surety to take a lease of 
        the Demised Premises pursuant to paragraph 2 above the Surety shall
        nevertheless upon demand pay to the Landlord a sum equal to the rent and
        to all other payments that would have been payable under this lease but
        for the disclaimer in respect of the period from the date of the said
        disclaimer until the expiration of six months therefrom or until the
        Demised Premises shall have been relet by the Landlord whichever shall
        first occur

                                      -50-

<PAGE>   1
                                                                   EXHIBIT 10.21


                            Dated 1st December 1995


                       G J KING & SON (HOME FARM) LIMITED


                                     - to -


                             ECC SIMULATION LIMITED


                                    - and -


                            ECC INTERNATIONAL CORP.


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

                                     LEASE

                                - relating to -
                Unit 2 Home Farm Business Centre Home Farm Road
                              Brighton East Sussex

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


                            [SPEECHLY BIRCHAM LOGO]


<PAGE>   2
THIS LEASE is made the 1st December 1995

(1)     G J KING & SON (HOME FARM) LIMITED whose registered office is situate 
        at G J King Business Centre Reeds Lane Sayers Common West Sussex BN6 
        9LS (hereinafter called "the Landlord")

(2)     ECC SIMULATION LIMITED (company registration number 1913659) whose 
        registered office is situate at Kingston Wharf Brighton Road Shoreham 
        by Sea West Sussex BN43 6RN (hereinafter called "the Tenant")

(3)     ECC INTERNATIONAL CORP a company incorporated in the State of Delaware 
        and whose principal place of business is at 175 Strafford Avenue Wayne 
        PA 19087-3377 U S A (hereinafter called "the Surety")

WITNESSETH as follows:-

1.      IN this lease where the context so admits the following expressions 
        shall have the following meanings respectively that is to say:-

        "the Landlord"
        means the Landlord hereinbefore named or such other person for the time 
        being entitled to the reversion immediately expectant upon the
        determination of the Term

        "the Tenant"
        means the Tenant hereinbefore named or such other person in whom the 
        Term shall for the time being be vested and wherever it includes more 
        than one person the covenants on the part of the Tenant hereinafter 
        contained shall be deemed to be joint and several

        "the Surety"
        means the Surety hereinbefore named or any person who shall have 
        covenanted with the Landlord pursuant to Clause 4(20)

                                      -1-
<PAGE>   3
"the Plan"
means the plan numbered 1 annexed hereto

"the Grassed and Planted Areas"
means the grassed and planted areas which adjoin Home Farm Road Brighton East
Sussex

"the Demised Premises"
means the land with the building erected thereon or on some part thereof known 
as Unit 2 Home Farm Business Centre Home Farm Road Brighton East Sussex and the 
curtilage thereof as the same is shown edged red on the Plan and shall include 
any other building from time to time erected thereon or on some part thereof

"Unit 1"
means the property adjoining the Demised Premises known as Unit 1 Home Farm 
Business Centre Lewes Road Brighton aforesaid

"the Main Structure"
means the roof foundations floor structures load bearing walls or frame 
stanchions beams window frames external walls external drains pipes and other 
external services of the Demised Premises

"the Soakaways"
means the soakaways situated on the Demised Premises and drainage pipes leading 
thereto from Unit 1

"Insured Risks"
means (subject to such exclusions and limitations as are imposed by the 
Insurers and to the extent that insurance cover against any particular risk is 
ordinarily available with a reputable insurer for property such as the Demised 
Premises) subsidence landslip heave fire explosion storm tempest lightning 
aircraft (not being hostile aircraft) and articles dropped therefrom riot civil 
commotion and flood and such other insurable risks against which the Landlord 
shall reasonably deem it desirable or expedient to insure

                                      -2-
<PAGE>   4
                            [Schematic of property]
<PAGE>   5
     "Term"
     means 21 years commencing on 24th June 1995

     "The Rent Commencement Date"
     means 24th June 1996

     "the Initial Market Rent"
     means the sum of TWO HUNDRED AND EIGHTY FIVE THOUSAND POUNDS 
     (Pounds Sterling 285,000) per annum exclusive of Value Added Tax

     "the First Reserved Rent"
     means the yearly rent reserved by Clause 2(A)
     hereof

     "the Secondly Reserved Rents"
     means

     (1)  a sum representing the cost reasonably and properly incurred or a fair
          proportion thereof (subject to the provisions of Clause 4(7)(h)
          hereof) of complying with the Landlord's insuring covenant hereinafter
          contained

     (2)  all other sums payable by the Tenant under the covenants on the part
          of the Tenant contained in this lease

     (3)  any interest chargeable under the provisions of this lease

     (4)  any additional insurance premiums payable by the Tenant arising under
          the provisions of Clause 4(7) of this lease

     (5)  all expenses costs fees and other sums incurred under the provisions
          Clause 4(24) hereof

     "the Review Dates"
     means 24th June 2001 24th June 2006 and 24th June 2011

                                      -3-

<PAGE>   6
     "the Review Period"      
     means the period starting with any Review Date up to and including the day
     immediately preceding the next Review Date or starting with the last Review
     Date up to the end of the Term

     "the Landlord's Surveyor"
     means any person or firm of surveyors appointed by or acting for the
     Landlord including an employee of the Landlord to perform the function of a
     Surveyor for any purposes under this lease

     "the Service Charge" 
     means the sums payable by the Tenant in accordance with Part 2 of the Third
     Schedule hereto

     "the Service Charge Year"
     means the period of twelve months up to the 31st March each year or such
     other period as the Landlord shall from time to time choose

     "the Service Costs"
     means all costs expenses and outgoings whatsoever incurred by the Landlord
     in carrying out the works and providing the services set out in Part 1 of
     the Third Schedule hereto

     "the Superior Lease"
     means the lease of the Demised Premises and other land date 5th May 1991
     and made between the Brighton Borough Council of the one part and the
     Landlord of the other part

     "the Superior Landlord"
     means Brighton Borough Council or such other person entitled to the benefit
     of the reversion expectant upon the determination of the Head Lease

     "the Electricity Sub-Station Lease"
     means the electricity sub-station lease dated 20th June 1991 and made

                                      -4-
<PAGE>   7

     between the Superior Landlord of the one part and Seeboard PLC of the other
     part

     "the Interest Rate"
     means the rate of four per centum per annum above the base rate from time
     to time of The Royal Bank of Scotland PLC

     "the Planning Acts"
     means the Town and Country Planning Act 1990 the Planning (Consequential
     Provisions) Act 1990 the Planning (Hazardous Substances) Act 1990 and the
     Planning (Listed Building and Conservation Areas) Act 1990 or any statutory
     consolidation modification or re-enactment of all or any of the above Acts

     "the Units"
     means all the units lettered "A" "B" "C" and "D" on the Plan together with
     the forecourt parking and landscaped areas therewith

     "an Individual Unit"
     means any one of the Units

     "Qualifying Person"
     means a company or corporation registered in the United Kingdom which has
     annual profits (which term shall have a meaning which is consistent with
     the term "profits for the financial year" where used in the Fourth Schedule
     to the Companies Act 1985) in the United Kingdom as shown in such company's
     or corporation's properly audited financial statements for the last three
     12 month accounting periods immediately preceding the proposed assignment
     of this lease to such company or corporation (the last of such accounting
     periods expiring not more than 12 months prior to the date of such
     assignment) which are not less than the sum of the annual rents payable
     pursuant to Clauses 2(A) and 2(B) of this lease for the year immediately
     prior to the date of such assignment multiplied by a factor of 2.5

                                      -5-
<PAGE>   8
2.   IN consideration of the rents and tenants covenants hereinafter reserved
     and contained the Landlord HEREBY DEMISES unto the Tenant the Demised
     Premises TOGETHER WITH the easements and rights specified in Part 1 of
     the First Schedule hereto EXCEPT AND RESERVED unto the Landlord and
     others the easements and rights specified in Part 2 of the First Schedule
     hereto TO HOLD the same unto the Tenant for the Term SUBJECT TO and where
     appropriate with the benefit of the provisions of the Electricity
     Sub-Station Lease in so far as the same affect or benefit the Demised
     Premises YIELDING AND PAYING to the Landlord without deduction during the
     Term and proportionately for any fraction of a year the rents set out
     hereunder

     (A)  The FIRST RESERVED RENT as hereinbefore defined being

          (1)  from the date hereof until the Rent Commencement Date a
               peppercorn (if demanded): and

          (2)  from and including the Rent Commencement Date until and including
               the 24th December 2003 the Initial Market Rent: and

          (3)  from and including the 25th December 2003 until and including the
               23rd June 2006 the yearly rent agreed or determined at 24th June
               2001 in accordance with Clause 3 hereof or THREE HUNDRED AND
               SIXTY EIGHT THOUSAND POUNDS (Pounds Sterling 368,000) per annum
               exclusive of Value Added Tax whichever shall be the greater; and

          (4)  during each successive Review Period commencing with the Review
               Period that commences on the second Review Date (that is 24th
               June 2006) a rent equal to the yearly rent previously payable
               hereunder or such increased rent as shall be ascertained in
               accordance with Clause 3 hereof whichever shall be the greater

                                      -6-

<PAGE>   9
     ALL such rents to be paid by equal quarterly instalments in advance
     on the usual quarter days in every year the first payment of the
     Initial Market Rent (apportioned in respect of the period from 
     and including the Rent Commencement Date up to and including the day 
     immediately preceding the next following quarter day) to be payable 
     on the Rent Commencement Date

     (B)  The SECONDLY RESERVED RENTS are hereinbefore defined

          Such rents to be payable from and including the date hereof or (if
          earlier) the date of occupation (as determined by the Landlord or the
          Landlord's Surveyor) and to be paid to the Landlord within fourteen
          days of demand (except as otherwise provided)

3.   RENT REVIEW

     (1)  The increased rent for any Review Period shall be (having regard to
          current open market values) the best yearly rent at which the whole of
          the Demised Premises might reasonably be expected to be let at the
          relevant Review Date

          (a)  On the following assumptions at the relevant Review Date:-

               (i)   that the Demised Premises are fit for immediate occupation
                     and use and that no work has been carried out thereon by
                     the Tenant its undertenants or their respective
                     predecessors in title during the Term which has diminished
                     the rental value of the Demised Premises and that in case
                     the Demised Premises have been destroyed or damaged they
                     have been fully restored

               (ii)  that the Demised Premises are available to let in the open
                     market by a willing landlord to a willing tenant as a whole
                     without a premium but

                                      -7-


<PAGE>   10
                     with vacant possession and subject to the provisions of 
                     this lease (other than the amount of the rent hereby 
                     reserved but including the provisions for rent review) 
                     for a term of fifteen years from the relevant Review 
                     Date or the residue then unexpired of the term of this 
                     lease (whichever shall be the longer)

               (iii) that the covenants herein contained on the part of the
                     Tenant and the Landlord have been fully performed and
                     observed

          (b)  But disregarding:-

               (i)   any effect on rent of the fact that the Tenant its
                     undertenants or their respective predecessors in title have
                     been in occupation of the Demised Premises and

               (ii)  any goodwill attached to the Demised Premises by reason of
                     the carrying on thereat of the business of the Tenant its
                     undertenants or their respective predecessors in title in
                     their respective businesses and

               (iii) any increase in rental value of the Demised Premises
                     attributable to the existence at the relevant Review Date
                     of any improvement to the Demised Premises or any part
                     thereof carried out with consent where required by and at
                     the expense of the Tenant its undertenants or their
                     respective predecessors in title during the Term otherwise
                     than in pursuance of an obligation to the Landlord or its
                     predecessors in title and 

                                      -8-
<PAGE>   11
               (iv)  any effect on rental value of any obligation of the Tenant
                     to remove alterations or to restore or reinstate the
                     Demised Premises and

               (v)   any rent free period or reduced rent period allowed to the
                     Tenant under the terms of this lease and

               (vi)  the provisions of Clause 6 (4) (b) (c) and (d) hereof

     (2)  The increased rent for any Review Period may be agreed at any time
          between the Landlord and the Tenant or (in the absence of agreement)
          determined not earlier that the relevant Review Date by an arbitrator
          such arbitrator to be nominated in the absence of agreement by or on
          behalf of the President for the time being of the Royal Institution of
          Chartered Surveyors on the application of the Landlord or the Tenant
          made not earlier than six months before the relevant Review Date

     (3)  IT IS HEREBY FURTHER PROVIDED in relation to the ascertainment and
          payment of the reviewed rent as follows:-

          (a)  The arbitrator shall be a Chartered Surveyor having not less than
               ten years experience in letting and valuation of similar property
               and of similar sized properties to the Demised Premises
               throughout England

          (b)  The arbitration shall be conducted in accordance with the
               Arbitration Acts 1950 and 1979 and any statutory modification or
               re-enactment thereof for the time being in force with the further
               provision that if the arbitrator nominated pursuant to Clause 3
               shall die or decline to act the President for the time being of
               the Royal Institution of Chartered Surveyors or the person
               acting on his behalf may on the application of either the
               Landlord or the Tenant by writing discharge the arbitrator and
               appoint another in his place

                                      -9-
<PAGE>   12
          (c)  When the increased rent has been ascertained as hereinbefore
               provided the Landlord and the Tenant shall record it forthwith by
               each signing and exchanging a separate written memorandum and the
               Landlord and the Tenant shall bear their own costs in respect
               thereof

          (d)  (i)  if the increased rent payable on and from any Review Date
                    has not been agreed by that Review Date rent shall continue
                    to be payable at the rate previously payable and forthwith
                    upon the increased rent being ascertained the Tenant shall
                    pay to the Landlord any shortfall between the rent actually
                    paid and the increased rent payable from the relevant Review
                    Date (or in the case of the first review payable from 25th
                    December 2003) up to the quarter day immediately following
                    the date that the increased rent is ascertained together
                    with interest on each instalment thereof from the date upon
                    which the same would have been payable if the increased rent
                    had been ascertained on the relevant Review Date (or in the
                    case of the first review had been ascertained on 25th
                    December 2003) to the date of actual payment thereof at the
                    rate of two per cent below the Interest Rate and the
                    interest so payable shall be recoverable in the same manner
                    as rent in arrear

               (ii) for the purposes of this proviso the increased rent shall be
                    deemed to have been ascertained on the date when the same
                    has been agreed between the Landlord and the Tenant or as
                    the case may be the date of the award of the arbitrator

          (e)  Time shall not be of the essence of this Rent Review clause

          (f)  If either the Landlord or the Tenant shall fail to pay any costs
               awarded against it in an arbitration under the provisions hereof
               within fourteen days of the same being 

                                      -10-
<PAGE>   13
               demanded by the arbitrator the other shall be entitled to pay the
               same and the amounts so paid shall be repaid by the party
               chargeable on demand

     (4)  Without prejudice to the provisions of this Clause if on any Review
          Date there shall be in force any enactment which shall relate to the
          control of rents and/or which shall restrict the Landlord's right to
          review the rent or recover any increased rent under this lease then
          the Landlord shall be entitled upon the termination or relaxation of
          such restriction to serve notice (hereinafter called "Interim Notice")
          upon the Tenant and from and after the date of the termination or
          relaxation of such restriction until the next Review Date for until
          the end of the Term) as the case may be the rent shall be increased to
          whichever is the higher of the rent agreed or determined in accordance
          with the provisions hereinbefore contained but at the date of service
          of the Interim Notice (or such lesser sum as may be permitted) or the
          rent payable immediately prior thereto and the provisions of this
          Clause shall apply accordingly with the substitution of the date of
          the termination or relaxation of such restriction for the relevant
          Review Date

4.  THE Tenant hereby covenants with the Landlord as follows:-

     (1)  TO PAY RENT AND INTEREST

          (a)  To pay the rents hereby reserved unto the Landlord throughout the
               Term and during a statutory continuation thereof at all times and
               in manner aforesaid without any deduction whatsoever except as
               authorised by any statutory enactment for the time being in force

          (b)  If any of the rents hereby reserved shall be due but unpaid for
               14 days to pay interest thereon (if demanded by the Landlord)
               calculated on a daily basis with three monthly rests from the due
               date until receipt by the Landlord at the Interest Rate (the
               Interest Rate shall apply before as well 

                                      -11-
<PAGE>   14
               as after and notwithstanding any judgement of the Court) Provided
               that this Clause 4(1)(c) shall not prejudice any other right or
               remedy in respect of such reserved rents

          (c)  If following the occurrence of any of the events referred to in
               Clause 6(1) hereof acceptance of any of the rents hereby reserved
               shall be reasonably refused by the Landlord but shall
               subsequently be accepted without prejudice to any other right or
               remedy of the Landlord to pay interest thereon (if demanded by
               the Landlord) calculated on a daily basis with three monthly
               rests from the due date until acceptance and receipt by the
               Landlord at the Interest Rate (the Interest Rate shall apply
               before as well as after and notwithstanding any judgement of the
               Court) Provided that this Clause 4(1)(d) shall not prejudice any
               other right or remedy in respect of such reserved rents

     (2)  TO PAY SERVICE CHARGE AND INSURANCE

          (a)  To pay the Service Charge in the manner set out in Part 2 of the
               Third Schedule hereto

          (b)  To pay on demand therefor the sum representing the cost (subject
               to the provisions of clause 4(7)(h) hereof) of complying with the
               Landlord's insuring covenant hereinafter contained

     (3)  TO PAY RATES AND TAXES

          To pay and discharge all existing and future rates taxes charges
          duties assessments and outgoings whatsoever whether parliamentary
          local or otherwise now or hereafter imposed or charged upon the
          Demised Premises or any part thereof or upon the owner or any occupier
          thereof or payable by either in respect thereof (excluding any payable
          by the Landlord in respect of receipt of rent or any other payment
          made by the Tenant under this lease (except any VAT payable on 
          rent or

                                      -12-
<PAGE>   15
          any other payment made by the Tenant under this lease) or on any
          disposition or dealing with or the ownership of the reversion of this
          lease) but including all charges in respect of water gas electricity
          and telecommunications used or consumed at the Demised Premises
          PROVIDED ALWAYS that the Tenant shall not agree or by default allow to
          be fixed the rateable value of the Demised Premises or any part
          thereof without the prior written consent of the Landlord such consent
          not to be unreasonably withheld

     (4)  TO REPAIR

          Well and substantially to repair cleanse maintain amend and keep in
          good and substantial repair the Demised Premises (including the Main
          Structure and all fixtures fittings plant machinery and apparatus
          belonging thereto) and all additions made thereto and the walls fences
          drains appurtenances and decorations thereof and to renew and replace
          the same from time to time insofar as the same may be or become beyond
          repair at any time during or at the expiration of the Term (howsoever
          determined) damage in all such cases from any of the Insured Risks
          excepted so long as the policy of insurance effected by the Landlord
          shall not have been vitiated or payment of any policy moneys refused
          in whole or in part by reason of any act neglect or default of the
          Tenant its undertenants or their respective servants agents or
          licensees

     (5)  TO PAINT AND DECORATE

          In every third year of the Term and also during the last year thereof
          (howsoever determined) to paint in a proper and workmanlike manner the
          outside wood iron and other parts heretofore or usually painted of the
          buildings on the Demised Premises and all additions thereto with two
          coats of good quality paint suitable for external use and for the
          surface and material to which it is to be applied such painting in the
          last year of the Term (howsoever determined) to be in colours
          previously approved in writing by the Landlord and in every fifth year
          of the Term and also in the last year thereof (howsoever determined)

                                      -13-
<PAGE>   16
          to paint in a proper and workmanlike manner all the inside wood iron
          and other parts heretofore or usually painted of the buildings on the
          Demised Premises and all additions thereto with two coats of good
          quality paint suitable for the surface and material to which it is to
          be applied such painting in the last year of the Term (howsoever
          determined) to be in colours previously approved in writing by the
          Landlord and on the occasion of every such external painting to
          varnish or colour the external parts usually or previously so dealt
          with and on the occasion of every internal painting to varnish wash
          stop whiten and colour all such parts as have previously been or are
          usually so dealt with and to repaper with suitable paper of good
          quality (in the last year of the Term (howsoever determined) in
          colours previously approved in writing by the Landlord the parts
          previously or usually papered

     (6)  TO CLEAN WINDOWS ETC

          To clean internally and externally the windows of the Demised Premises
          as often as occasion shall require and at least once in every month
          and at least once a week to remove all refuse rubbish and scrap which
          may have accumulated on the Demised Premises

     (7)  INSURANCE

          (a)  Subject to the Landlord having supplied to the Tenant in writing
               full particulars of any policy of insurance effected on the
               Demised Premises and any modification or variation thereof not to
               do or omit or allow to be done or omitted any act matter or thing
               whatsoever whereby any policy of insurance effected on the
               Demised Premises or anything therein or on any adjoining or
               neighbouring premises of the Landlord may become void or voidable
               or the premiums payable for such insurance increased

          (b)  To the extent that any insurance premium payable in respect of
               any adjoining or neighbouring premises is increased by any 

                                      -14-
<PAGE>   17
               use act neglect omission or default of the Tenant its
               undertenants or their respective servants agents or licensees in
               relation to the Demised Premises to pay the Landlord on demand
               the amount of such increase

          (c)  In the event of the Demised Premises or any part thereof being
               destroyed or damaged by any of the Insured Risks to give
               immediate notice thereof in writing to the Landlord

          (d)  In the event of the Demised Premises or any part thereof being
               destroyed or damaged by any of the Insured Risks and the
               insurance money under any insurance effected against the same
               being wholly or partly irrecoverable (by reason of any act
               neglect omission or default of the Tenant its undertenants or
               their respective servants agents or licensees) then and in every
               such case the Tenant will pay to the Landlord forthwith the whole
               or (as the case may require) a fair proportion of the cost of
               completely rebuilding and reinstating the same

          (e)  Subject to the Landlord having supplied in writing to the Tenant
               full particulars thereof to comply with the requirements and
               recommendations of the Landlord's insurers

          (f)  Not to store on the Demised Premises any inflammable or any
               explosive combustible or deleterious substance save that the
               Tenant may store at the Demised Premises such reasonable
               quantities of inflammable substances in proper and safe
               containers as are normally used for its business SUBJECT TO the
               Tenant obtaining the Landlord's insurers prior written approval
               thereto and the Tenant paying any increase in insurance premium
               arising therefrom and on the reasonable request of the Landlord
               supplying to the Landlord details of the type and amounts of the
               substances stored on the Demised Premises

                                      -15-
<PAGE>   18
          (g)  To repay to the Landlord on demand the proper costs and expenses
               incurred in obtaining valuations of the Demised Premises for
               insurance purposes from time to time but so that such valuations
               shall not be carried out more frequently than once every three
               years

          (h)  The Landlord may retain for its own benefit any commissions or
               discount received or obtained by the Landlord on or based on the
               gross premiums and other expenses which would otherwise by paid
               incurred or suffered by the Landlord in effecting or maintaining
               such insurance

          (i)  To insure the keep insured in the joint names of the Landlord and
               the Tenant and such other names as the Landlord may reasonably
               require all the plate glass or any substitute or alternative
               material used in windows (if any) and doors in the Demised
               Premises against breakage or damage howsoever caused with an
               insurance company of repute to the full reinstatement value
               thereof the public liability relevant to such breakage and pay
               all premiums necessary for that purpose and whenever required
               produce to the Landlord or its agent the policy of insurance and
               the receipt for the current year's premium and whenever a claim
               arises to use the insurance money forthwith in reinstating the
               same with a like material to the reasonable satisfaction of the
               Landlord's Surveyor making up any deficiency out of the Tenant's
               own moneys

          (j)  To pay to the Landlord on demand the amount of any excess which
               may be applicable in the event of any claim in respect of any of
               the Insured Risks

     (8)  TO EXECUTE WORKS

          To execute all works on or in respect of the Demised Premises now or
          from time to time throughout the Term lawfully required to be 
          executed 

                                      -16-
<PAGE>   19

          by any local or public authority (including works required under the
          Health & Safety at Work ect. Act 1974 the Offices Shops and Railway
          Premises Act 1963 or any Act amending or replacing the same for the
          time being in force whether the said works shall be required to be
          executed by the Landlord or by the Tenant and in all respects and at
          the Tenant's own expense to comply with and cause to be complied with
          the provisions of all statutes byelaws and regulations for the time
          being in force and the requirements of any competent authority
          affecting or relating to the Demised Premises or the use thereof and
          at all times to indemnify and to keep indemnified the Landlord and the
          Superior Landlord against all claims demands expenses and liability in
          respect thereof

     (9)  NOTICES RECEIVED

          Within seven days of receipt of the same to give full particulars to
          the Landlord of any notice direction or order or proposal for a notice
          direction or order made given or issued to the Tenant by any
          government department or local or public authority and if so required
          by the Landlord to produce and supply copies of the same to the
          Landlord AND without delay to take all necessary steps to comply with
          the same AND ALSO at the request of the Landlord to make or join with
          the Landlord in making such objections or representations relating to
          the same as the Landlord shall deem expedient but with due regard
          being had to the Tenant's interest in the Demised Premises

     (10) TO PERMIT ENTRY TO VIEW

          To permit the Landlord and the Superior landlord and their respective
          surveyors or other agents during the Term at reasonable hours in the
          daytime on prior appointment to enter the Demised Premises to view the
          state of repair and condition of the same and to take inventories of
          the fixtures therein

     (11) TO PERMIT ENTRY TO REPAIR

                                      -17-
<PAGE>   20
          To permit the Landlord and the Superior Landlord or their respective
          agents or the Landlord's Surveyor with or without workmen at any time
          during the Term at reasonable hours in the daytime on prior
          appointment except in the case of emergency to enter upon the Demised
          Premises for the purpose of executing repairs or alterations to or in
          connection with any adjoining premises of the Landlord and the
          Superior Landlord the Landlord or the Superior Landlord making good
          all damage thereby occasioned to the Demised Premises

     (12) TO REPAIR ON NOTICE

          To repair and make good to the satisfaction of the Landlord and the
          Superior Landlord all breaches of covenant defects and wants of
          reparation for which the Tenant may be liable under the covenants
          herein contained of which notice shall have been given by the landlord
          to the Tenant within two calendar months after the giving of such
          notice or sooner if requisite

     (13) TO COMPLY WITH STATUTORY REQUIREMENTS

          (a)  At all times to observe and comply with the provisions of or
               imposed under any statute licence or regulation regulating or
               permitting the use of the Demised Premises for the purpose for
               which they are for the time being used and the requirements of
               any competent authority in that connection and at the expense of
               the Tenant to do all that is necessary to obtain maintain and
               renew all licences and registrations required by law for the use
               of the Demised Premises for that purpose

          (b)  At the sole cost of the Tenant to comply with the Planning Acts
               for the time being in force and with all byelaws orders and
               regulations licences consents permissions and conditions made
               thereunder affecting the Demised Premises or any use thereof and
               to indemnify and keep harmless and indemnified the Landlord
               against any breach or non-performance of any

                                      -18-
<PAGE>   21
               such requirements and against all costs expenses penalties and
               levies thereby arising

     (14) PLANNING

          In relation to the Planning Acts:-

          (a)  Not without the prior written consent of the Landlord such
               consent not to be unreasonably withheld or delayed to apply for
               permission to carry out on the Demised Premises any development
               requiring permission under the Planning Acts

          (b)  Not to implement any planning permission relating to the Demised
               Premises without the prior written consent of the Landlord such
               consent not to be unreasonably withheld or delayed but without
               prejudice to the generality of the foregoing such consent shall
               be given if in the opinion of the Landlord or the Landlord's
               Surveyor (whose decision shall be final) the value of the
               Landlord's reversionary interest is not affected thereby

          (c)  Whenever required to permit the Landlord to enter upon the
               Demised Premises to comply with any requirement lawfully made of
               it under the Planning Acts by any competent authority
               notwithstanding that any action reasonably necessary for
               compliance interferes with the Tenant's enjoyment of the Demised
               Premises

          (d)  To pay and satisfy any charge which may hereafter be imposed
               under the Planning Acts in respect of the carrying out of any
               operations or the institution or continuance of the use of the
               Demised Premises

          (e)  Unless the Landlord shall otherwise direct in writing to carry
               out and complete before the expiration or sooner determination of
               the Term any works stipulated to be carried 

                                      -19-
<PAGE>   22
               out to the Demised Premises (notwithstanding that such works are
               to be carried out by a later date) as a condition of planning
               permission for any development begun before such expiration or
               sooner determination

          (f)  If the Tenant shall receive any compensation relating to the
               Tenant's interest hereunder due to any restriction placed upon
               the user of the Demised Premises as a result of the Planning Acts
               then if and when the Tenant's interest hereunder shall be
               determined by assignment or under the power of re-entry herein
               contained the Tenant shall forthwith make such provision as is
               just and equitable for the Landlord to receive its due benefit
               from such compensation

     (15) PERMITTED USE

          Not to use or permit or suffer to be used the Demised Premises or any
          part thereof otherwise than solely and exclusively as and for use
          within Classes B1(b) or (c) or B2 of the Town and Country Planning
          (Use Classes) Order 1987 as originally enacted and uses ancillary
          thereto

     (16) PROHIBITED USES

          Not to use the Demised Premises or any part thereof nor allow the same
          to be used as the premises of any public or local authority to which
          the public have access or for any public meeting exhibition or
          entertainment or for any illegal or immoral purpose or for the
          purposes of a club whether or not one where intoxicating liquor is
          supplied to members or their guests nor permit or suffer any sale by
          auction to be held on the Demised Premises or any part thereof or to
          sell serve or supply or permit or suffer to be sold served or supplied
          any intoxicating liquor thereon or therefrom (save that intoxicating
          liquor may be served to staff in any staff restaurant which is
          ancillary to the use permitted by Clause 4(15) hereof or play or use
          or allow to be played or used any sound-producing instrument or

                                      -20-
<PAGE>   23
          apparatus on the Demised Premises or any part thereof so as to be
          audible outside the Demised Premises nor permit the Demised Premises
          to be used as a sleeping place for any person and not to use the
          Demised Premises or any part thereof or permit or suffer the same to
          be used for the purpose of any betting transactions or for gaming with
          or between persons resorting to the Demised Premises and not to make
          or permit or suffer to be made any application for a Betting Office
          Licence or a Licence or registration under the Gaming Acts 1963 to
          1968 in respect of any part of the Demised Premises

     (17) NUISANCE

          Not to do or commit or permit or suffer to be done or committed upon
          the Demised Premises or any part thereof any act or thing which shall
          be a nuisance annoyance or disturbance to the Landlord or the Superior
          Landlord or to the owners lessees or occupiers for the time being of
          any adjoining or neighbouring property or to the neighbourhood

     (18) ALTERATIONS

          (a)  Not at any time during the Term to make any alteration or
               addition to the sprinkler system (if any) or to make any
               alterations to the Demised Premises which affect the operation of
               the sprinkler system (if any) without first obtaining the consent
               in writing of the Landlord such consent not to unreasonably
               withheld or delayed

          (b)  Not at any time during the Term to make any alteration or
               addition to the electrical installation of the Demised Premises
               save in accordance with the terms and conditions laid down by the
               Institution of Electrical Engineers and the Regulations of the
               Electrical Supply Authority

          (c)  Not at any time during the Term to erect set up or maintain or
               suffer to be erected set up or maintained on the Demised

                                      -21-
<PAGE>   24
               Premises or any part thereof any building shed or similar
               structure whether of a permanent or temporary character

          (d)  Not at any time during the Term to make any change to the
               external design or appearance of the building constructed on the
               Demised Premises

          (e)  Not to cut maim alter or injure or suffer to be cut maimed
               altered or injured the Main Structure nor make any external or
               internal alterations in the plan or elevation of the building on
               the Demised Premises or in any party or other wall nor alter or
               change any of the materials or architectural decorations of the
               said building nor make or maintain or suffer to be made or
               maintained any addition thereto either in height or projection
               save that if any such alternations as aforesaid are necessary
               because of a permitted underletting of an Individual Unit then
               the provisions of Clause 4(18)(g) hereof shall apply thereto
               mutatis mutandis

          (f)  Not at any time during the Term to overload the floors or
               ceilings or the Main Structure in any way which imposes a weight
               or strain in excess of that which the building on the Demised
               Premises is constructed to bear with due margin for safety or
               which will in any way strain or interfere with the Main Structure

          (g)  Not to make any nonstructural erection addition or alteration
               whatsoever to the Demised Premises (including to walls timbers
               wires pipes drains appurtenances fixtures or fittings thereof)
               without the previous consent in writing of the Landlord (which
               consent shall not be unreasonably withheld or delayed) such
               consents to be without prejudice nevertheless to the provisions
               of this Clause 4(18) and Clauses 4(13)(14) and (26) nor except
               in accordance with plans and specifications (with such additional
               copies thereof as the Landlord may reasonably required previously
               submitted to and 

                                      -22-
<PAGE>   25
               approved in writing by the Landlord nor carried out except to the
               satisfaction of its surveyor

          (h)  Nothing herein contained in this Clause 4(18) shall prevent the
               Tenant from installing or removing internal nonstructural
               demountable partitioning in the Demised Premises without the
               Landlord's consent provided such works do not adversely affect
               the services in the Demised Premises and the Tenant shall supply
               the Landlord with plans detailing the internal layout of the
               Demised Premises then current on demand by the Landlord

          (i)  Any alterations or additions carried out to the Demised Premises
               shall at the end or sooner determination of the Term be
               reinstated by the Tenant if requested in writing by the Landlord
               so to do

     (19) SIGNS

          (a)  Not without the previous written consent of the Landlord and the
               Superior Landlord (such consents not to be unreasonably withheld)
               to carry out or permit the painting or writing of any notice or
               advertisement whatsoever whether permanent or temporary on the
               glass of the windows or doors of the building on the Demised
               Premises or (except with the previous written consent of the
               Landlord and the Superior Landlord) the affixing or display of
               any bill notice doorplate sign or advertisement which projects
               over any street or land over which the public has access

          (b)  Without prejudice to the provisions of Clause 4(19)(a) not to
               exhibit put up or permit upon any part of the exterior of the
               building on the Demised Premises and the open areas thereof
               without the previous consent in writing of the Landlord and the
               Superior Landlord (such consents not to be unreasonably withheld
               or delayed) any bill notice sign or advertisement

                                      -23-

<PAGE>   26
               other than such as relate solely to the Tenant its undertenants
               or other occupier's business for the time being carried on at the
               Demised Premises PROVIDED and it is hereby declared that if any
               bill notice sign or advertisement displayed in or upon any part
               of the exterior of the building on the Demised Premises or in or
               upon any part of the interior of the building on the Demised
               Premises which is visible from outside the building on the
               Demised Premises shall in the reasonable opinion of the Landlord
               or the Superior Landlord be unsightly undesirable or
               objectionable then the same shall be removed by the Tenant within
               twenty-four hours after the receipt by the Tenant of notice
               requiring the Tenant so to do

     (20) ALIENATION ETC

          (a)  COMPLETE BAR ON CERTAIN DEALINGS

               Not to assign underlet or part with possession or part with or
               share occupation of the Demised Premises or any part thereof save
               as hereinafter provided

          (b)  SHARING OCCUPATION

               The Tenant may share occupation or possession of any part of the
               Demised Premises with any member of the group of companies (as
               defined in Section 42(1) of the Landlord and Tenant Act 1954) of
               which the Tenant is itself a member on the condition that:-

               (i)   no relationship of landlord and tenant is created between
                     the Tenant and any such company

               (ii)  the possession or occupation shall forthwith be determined
                     if the Tenant and the relevant member

                                      -24-
<PAGE>   27
                     shall cease for any reason whatsoever to be members of the
                     same group of companies

               (iii) On written request from the Landlord or its agents the
                     Tenant shall supply in writing to the Landlord or its
                     agents details of the identity of any company as aforesaid
                     let into occupation

          (c)  ASSIGNING THE WHOLE

               (i)  Not to assign the whole of the Demised Premises:-

                    (a)  without the Landlord's prior written consent such
                         consent not to be unreasonably withheld or delayed

                    (b)  except to an assignee who shall first have

                         (aa) entered into a direct covenant with the Landlord
                              to observe and perform the covenants and
                              conditions on the part of the Tenant contained in
                              this lease

                         (bb) if reasonably so required by the Landlord
                              procured a covenant with the Landlord by an
                              acceptable guarantor or guarantors in the terms
                              (mutatis mutandis) set out in the Second Schedule
                              hereto or in such other form as the Landlord may
                              reasonably require

               (ii) Subject to compliance with the provisions of clause
                    4(20)(c)(i) then upon and with effect from completion of a
                    lawful assignment of the whole of the Demised Premises by
                    the person at that time being the Tenant ("the Assignor") to
                    another ("the Assignee") where either the 

                                      -25-
<PAGE>   28
                    Assignor is a Qualifying Person or the Assignee is a
                    Qualifying Person the Assignor shall cease to have any
                    liability for any future breach or non-observance or
                    non-performance of the covenants on the part of the Tenant
                    contained in this lease and any Surety of the Assignor shall
                    cease to have any liability for any future breach or
                    non-observance or non-performance of the covenants on the
                    part of the Tenant contained in this lease pursuant to any
                    covenants given in any guarantee or agreement between such
                    Surety and the Landlord PROVIDED ALWAYS

                    (a)  that the Assignor and any Surety of the Assignor shall
                         nevertheless remain liable in respect of any subsisting
                         breach of the said covenants occurring prior to the
                         date of the lawful assignment; and

                    (b)  that the Assignor and any Surety of the Assignor shall
                         enter into a Deed of Guarantee whereby the Assignor and
                         any Surety of the Assignor covenants with the Landlord
                         as surety (in a form reasonably acceptable to it)
                         incorporating a standard of obligations similar to
                         those set out in the Second Schedule hereto but adapted
                         to suit the circumstances in which the guarantee is
                         given for the period during which the Assignee remains
                         liable as Tenant under the terms of this lease

               (iii) If the Assignor and any Surety of the Assignor are not
                     released from their respective liabilities by the operation
                     of Clause 4(20)(c)(ii) because neither the Assignor or the
                     Assignee is a Qualifying Person, then the Assignor and any
                     Surety of the Assignor shall

                                      -26-
<PAGE>   29
                    in any event cease to have any liability for any future
                    breach or non-observance or non-performance of the covenants
                    on the part of the Tenant contained in this lease with
                    effect from the date of the first lawful assignment
                    thereafter by a person at that time being the Tenant to
                    another where either of those persons is a Qualifying Person

          (d)  UNDERLETTING THE WHOLE

               Not to underlet the whole of the Demised Premises:-

               (i)   without the Landlord's prior written consent such consent
                     not to be unreasonably withheld or delayed

               (ii)  except to an underlessee who shall first have

                     (a)  entered into a covenant with the Landlord to observe
                          and perform the covenants and conditions on the part
                          of the Tenant contained in this lease (other than the
                          covenant to pay rent) and

                     (b)  if reasonably so required by the Landlord procured a
                          covenant with the Landlord by an acceptable guarantor
                          or guarantors in the terms (mutatis mutandis) set out
                          in the Second Schedule hereto or in such other form as
                          the Landlord may reasonably require

               (iii) in consideration of any fine or premium

               (iv)  without reserving a yearly rent payable in advance on the
                     usual quarter days equal to the greater of

                                      -27-
<PAGE>   30
                    (a)  the then open market yearly rental value of the Demised
                         Premises and

                    (b)  the higher of the First Reserved Rent and the Initial
                         Market Rent

                    reviewable on the same dates and on the same terms (as set
                    out in Clause 3 hereof) as the First Reserved Rent

               (v)  except on similar covenants and conditions to those
                    contained in this lease and in particular:-

                    (a)  for the re-entry on breach of any covenant in the
                         underlease

                    (b)  that the underlease will contain similar terms as to
                         the carrying out of and the paying for repairs and
                         proper service charges

               (vi) without taking from any underlessee unqualified covenants
                    (which the Tenant shall enforce):-

                    (a)  not to assign or underlet the whole of the Demised
                         Premises without the prior written consent of the
                         Landlord (under this lease) such consent not to be
                         unreasonably withheld or delayed and

                    (b)  not to deal in any other way whatsoever with the
                         Demised Premises or any part thereof and

                    (c)  to obtain from any assignee of the underlease a
                         covenant with the Landlord 

                                      -28-

<PAGE>   31
                         (under this lease) to observe and perform the covenants
                         and conditions on the part of the Tenant contained in
                         this lease (other than the covenant to pay rent) during
                         the term granted by the underlease

          (e)  UNDERLETTING AN INDIVIDUAL UNIT

               Not to underlet an Individual Unit

               (a)  without the Landlord's prior written consent such consent
                    not to be unreasonably withheld or delayed

               (b)  without the Tenant erecting or procuring the erection of an
                    internal division wall or walls (as the case may be) between
                    the Individual Unit and the remaining Units details of which
                    having been supplied to the Landlord in accordance with
                    Clause 4(18)(g) hereof (and for the avoidance of doubt the
                    provisions of Clause 4(18)(g) hereof shall apply hereto) and
                    without the Tenant complying with all statutory requirements
                    insurers requirements and fire authority requirements or
                    recommendations in relation thereto

               (c)  except to an underlessee who shall first have

                    (aa) entered into a covenant with the Landlord to observe
                         and perform the covenants and conditions on the part of
                         the Tenant contained in this lease (other than the
                         covenant to pay rent and insofar as they are applicable
                         to the underletting of an Individual Unit) and

                    (bb) if reasonably so required by the Landlord procured a
                         covenant with the Landlord by an acceptable guarantor
                         or guarantors in the terms

                                      -29-
<PAGE>   32
                         (mutatis mutandis) set out in the Second Schedule
                         hereto or in such other form as the Landlord may
                         reasonably require

               (d)  in consideration of any fine or premium

               (e)  without reserving a yearly rent payable in advance on the
                    usual quarter days equal to the then open market yearly
                    rental value of the Individual Unit reviewable on the same
                    dates and on the same terms as set out in Clause 3 hereof

               (f)  except on similar covenants and conditions to those in this
                    lease (in so far as they are applicable to the underletting
                    of an Individual Unit) and in particular:-

                    (aa) for the re-entry on breach of any covenant in the
                         underlease

                    (bb) that the underlease will contain similar terms as to
                         the carrying out or paying for repairs and proper
                         services charges

               (g)  without taking from any underlessee unqualified covenants
                    (which the Tenant shall enforce):-

                    (aa) not to assign the underlet Individual Unit without the
                         prior written consent of the Landlord (under this
                         lease) such consent not to be unreasonably withheld or
                         delayed and

                    (bb) not to deal in any other way whatsoever with the
                         Demised Premises or any part thereof

                    (cc) to obtain from any assignee of the underlet Individual
                         Unit a covenant with the Landlord

                                      -30-
<PAGE>   33
                         (under this lease) to observe and perform the covenants
                         and conditions on the part of the Tenant contained in
                         this lease (other than the covenant to pay rent) during
                         the term granted by the underlease insofar as such
                         covenants and conditions relate to the underlet
                         Individual Unit

          (f)  RENT REVIEW UNDER UNDERLEASES

               To procure that in any underletting the yearly rent is reviewed
               under such underlease in accordance with the terms of the
               underlease but not to agree any rent on review under any
               underlease without the prior written consent of the Landlord such
               consent not to be unreasonably withheld and (if the rent under
               the underlease is to be awarded by an arbitrator in accordance
               with the provisions therein contained) to procure that the
               Landlord's representations as to the yearly rent payable
               thereunder are made to the arbitrator to the reasonable
               satisfaction of the Landlord

          (g)  ENFORCEMENT OF COVENANTS

               To enforce the performance and observance by every underlessee of
               the provisions of the underlease (whether of the whole of the
               Demised Premises or an Individual Unit) and not at any time
               either expressly or by implication to waive any breach of the
               covenants or conditions on the part of the underlessee or
               assignee of any underlease nor without the consent of the
               Landlord (such consent not to be unreasonably withheld) to vary
               the terms

          (h)  AGREEMENT

               It is hereby expressly agreed and declared that if the Landlord
               (acting reasonably) shall not be satisfied that the yearly rent
               to be reserved by a proposed underlease is in accordance with
               Clause 4(20)(d)(iv) or 4(20)(i)(e) (as the case may be) then the
               Landlord

                                      -31-
<PAGE>   34
               may refuse its consent to such underletting and such refusal
               shall be deemed to be reasonable

     (21) TO REGISTER ANY DISPOSITION

          To give notice in writing of every assignment assent transfer
          underlease change of name charge or devolution of or other instrument
          relating to or affecting the Demised Premises and to produce a
          certified copy of the same within twenty one days after the execution
          or grant thereof to the solicitors of the Landlord and to pay their
          reasonable registration fee (and that of the Superior Landlord) in
          respect of each such instrument PROVIDED THAT registration of any such
          document shall not require the Landlord to consider the terms thereof
          and shall not be evidence that it has done so

     (22) RE-LETTING

          To permit the Landlord and the Superior Landlord or their agents at
          any reasonable time to enter upon the Demised Premises and to affix
          upon any appropriate or suitable part thereof a notice board or boards
          for re-letting at any time six months prior to the expiration or
          sooner determination of the Term or at any time for selling and to
          permit all persons authorised by order in writing of the Landlord or
          its agents to view the Demised Premises at reasonable hours in the
          daytime without interruption

     (23) EASEMENTS

          To take all necessary steps to prevent any encroachment upon the
          Demised Premises or the acquisition of any new right to light passage
          drainage or other easement over upon or under the Demised Premises and
          to give notice in writing to the Landlord of any threatened
          encroachment or attempt to acquire any such easement and throughout
          the Term to preserve unobstructed and undefeated all rights of light
          and other easements appertaining to the Demised Premises and not to
          permit or suffer but give notice in writing to the Landlord of any 
          act

                                      -32-
<PAGE>   35
          matter or thing whereby a new easement or encroachment might come to
          be made into against over or upon the Demised Premises or any part
          thereof and to do all such things as the Landlord may reasonably
          require to prevent the same

     (24) LANDLORD'S COSTS

          To pay to the Landlord on an indemnity basis all reasonable and proper
          Solicitors' (as between a Solicitor and own client) Counsels'
          Surveyors' and other professional costs expenses and fees incurred by
          the Landlord

          (a)  In or in contemplation of any proceedings relating to the Demised
               Premises whether or not under Sections 146 or 147 of the Law of
               Property Act 1925 or the preparation and service of a notice
               thereunder (whether or not any right of re-entry or forfeiture
               has been waived by the Landlord or a notice served on the Tenant
               has been complied with or the Tenant has enjoyed relief under the
               provisions of the said Act or forfeiture is avoided otherwise
               than by relief granted by the Court) and to keep the Landlord
               fully and effectively indemnified against all costs expenses
               claims and demands whatsoever in respect of such proceedings

          (b)  In the preparation and service of a schedule of dilapidations at
               any time during or after the Term and in the inspection of the
               works which are the subject of such schedule whether during or
               after the carrying out thereof

          (c)  In connection with the recovery of any arrears of the rents
               hereby reserved

          (d)  In respect of any application for consent or approval required by
               this Lease whether or not such consent is granted or such
               approval given

                                      -33-
<PAGE>   36
     (25) TO YIELD UP

          At the expiration or sooner determination of the Term quietly to yield
          up the Demised Premises and any additions thereto so repaired painted
          cleansed maintained amended kept renewed and replaced as aforesaid

     (26) THE SUPERIOR LEASE ETC

          At all times during the Term to observe and perform the obligations on
          the part of the Landlord contained in the Superior Lease (except the
          obligation to pay the premium and the obligations referred to in
          clause 2(4) thereof) and Clause 4(e) of the Electricity Sub-Station
          Lease insofar as the same relate to or affect the Demised Premises and
          to keep the Landlord fully and effectually indemnified against all
          actions proceedings damages costs expenses claims and demands
          whatsoever in respect of any breach thereof

     (27) VALUE ADDED TAX

          Whenever in this lease provision is made for the Tenant to pay any sum
          (including but without prejudice to the generality of the foregoing
          rent legal costs registration fees surveyors and other professional
          fees charges and expenses) on which Value Added Tax is payable or may
          at the election of the Landlord be payable (and provided that the
          Landlord does so elect) then the Tenant shall pay in addition to such
          sum Value Added Tax thereon at the rate appropriate at the time of
          supply Provided That where the Value Added Tax supply is to the Tenant
          the Landlord shall provide the Tenant with a VAT invoice addressed to
          and in favour of the Tenant and where the VAT supply is to the
          Landlord the Tenant shall pay to the Landlord only that part of the
          Value Added Tax which the Landlord is not entitled to recover

     (28) PIPES AND DRAINS

                                      -34-
<PAGE>   37
          Not to observe or permit the obstruction of any pipes including the
          drains serving the Demised Premises by oil grease hair or other
          deleterious matter but to keep all pipes and drains in or serving the
          Demised Premises thoroughly cleaned as often as may be necessary

5.   THE Landlord hereby covenants with the Tenant as follows:-

     (1)  QUIET ENJOYMENT

          The Tenant paying the rents hereby reserved and performing and
          observing the several covenants conditions and agreements herein
          contained and on the Tenant's part to be performed and observed may
          peaceably and quietly hold and enjoy the Demised Premises during the
          Term without any lawful interruption by the Landlord or any person
          rightfully claiming under or in trust for the Landlord

     (2)  THE SUPERIOR LEASE ETC

          To observe and perform the covenants on the part of the Landlord
          contained in:-

          (a)  the Superior Lease but only in so far as the Superior Landlord
               shall require the same to be observed and performed and except as
               they are by this lease expressly assumed by the Tenant and

          (b)  Clauses 4(b) to (d) inclusive of the Electricity Sub-Station
               Lease

     (3)  TO INSURE

          To insure or cause to be insured the Demised Premises and all
          Landlord's fixtures and fittings therein or thereon of an insurable
          nature (other than those which the Tenant or other tenants may be
          entitled to remove) excluding all the glass therein against (i) loss
          or damage by the Insured Risks in such sum (including any incidental

                                      -35-
<PAGE>   38
          expenses) as shall be determined from time to time by the Landlord to
          represent the reinstatement cost thereof as new together with all
          professional and other fees and expenses and the cost of site
          clearance and other incidental expenses (ii) public liability of the
          Landlord involving or relating to the Demised Premises or any part
          thereof and (iii) the loss of four years rent in some insurance office
          of repute and to supply a summary of such insurance and evidence of
          payment of the current premium to the Tenant on request once yearly
          and in the case of destruction or damage to the Demised Premises by
          any Insured Risk to immediately notify the insurer on receiving
          notification from the Tenant of the damage or destruction and to claim
          all sums due under the insurance policy and use all reasonable
          endeavours to procure the payment by the insurer of all sums properly
          due under the insurance policy and apply for and use all reasonable
          endeavours to obtain all planning permissions building regulations
          consents and other consents or licences necessary to enable the
          Landlord to reinstate the Demised Premises and (unless payment of any
          money payable under any policy of insurance shall be wholly or partly
          withheld or refused either in consequence of any exclusion or
          qualification imposed by insurers or of any act neglect or default of
          the Tenant its undertenants or their respective servants agents or
          licensees) to ensure that all insurance moneys (other than for loss of
          rent and public liability) received by the Landlord are with all
          convenient speed (subject to the necessary labour and materials being
          procurable and to all necessary statutory consents being obtained)
          laid out and applied in rebuilding repairing or otherwise reinstating
          the Demised Premises and to make up any deficiency out of its own
          monies

     (4)  INSURANCE PROCEEDS

          Subject to the provisions for reinstatement contained in Clause 5(3)
          hereof the building insurance proceeds shall belong to Landlord for
          its own use and benefit absolutely

     (5)  NOTIFICATION

                                      -36-
<PAGE>   39
          The Landlord will notify its insurers of the Tenant's interest in the
          Demised Premises and have it noted on the policy or policies of
          insurance

     PROVIDED ALWAYS that where any person comprising the Landlord assigns its
     interest in the reversion to the Demised Premises such person shall be
     released from the covenants set out above in this Clause 5 with effect from
     the date of such assignment

6.   PROVIDED ALWAYS and it is hereby agreed and declared as follows:-

     (1)  FORFEITURE AND RE-ENTRY

          That this lease is made upon the express condition that if (a) any of
          the rents hereby reserved shall be unpaid for twenty one days after
          the due dates whether the same shall have been lawfully demanded or
          not or (b) any Tenant's covenant shall not have been observed or
          performed or (c) if the Tenant being an individual or firm shall
          become bankrupt or be the subject of an interim order under Part VIII
          of the Insolvency Act 1986 or being a Company shall go into either
          compulsory or voluntary liquidation (except for the purpose of
          reconstruction or amalgamation) or shall have an administration order
          made in respect of it under the Insolvency Act 1986 or if an
          administrative receiver or a receiver shall be appointed or (d) the
          Tenant shall enter into composition or arrangement with creditors or
          shall suffer any distress or execution to be levied on the goods of
          the Tenant then and in any of the said cases and at any time
          thenceforth it shall be lawful for the Landlord or its authorised
          agent to re-enter into or upon the Demised Premises and to repossess
          and enjoy the same as if this lease had not been made but without
          prejudice to any right of action or remedy of either party in respect
          of any antecedent breach of any of the covenants by the other herein
          contained 

                                      -37-
<PAGE>   40
     (2)  RENT CESSER

          If during the Term the Demised Premises or any part thereof shall be
          destroyed or damaged by any Insured Risk so as to be unfit for
          occupation or use and the policy of insurance effected by the Landlord
          shall not have been vitiated or payment of the policy moneys wholly or
          partly withheld or refused by reason of any act neglect or default of
          the Tenant its undertenants or their respective servants agents or
          licensees the First Reserved Rent or a fair proportion thereof
          according to the nature and extent of the damage sustained shall be
          suspended until the Demised Premises shall again be fit for occupation
          and use or until the expiration of four years from the date of the
          damage or destruction whichever shall be the earlier and any dispute
          shall be referred to the award of a single arbitrator to be appointed
          in default of agreement upon the application of either party by the
          President for the time being of the Royal Institution of Chartered
          Surveyors in accordance with the provisions of the Arbitration Acts
          1950 and 1979 or any statutory modification thereof for the time being
          in force

     (3)  DETERMINATION BY EITHER PARTY

          If within four years from the date of such damage or destruction as
          aforesaid of the Demised Premises reinstatement or rebuilding of the
          Demised Premises has not been practically completed then after the
          expiration of the said four year period but only before such practical
          completion as aforesaid either party may give written notice to the
          other terminating this lease three months from the date of such notice
          and upon expiry of such notice this lease shall absolutely determine
          and the rights and obligations of the parties shall cease but without
          prejudice to any right or claim arising hereunder and still subsisting
          at the date of determination

                                      -38-
<PAGE>   41
     (4)  DETERMINING BY TENANT

          (a)  At any time before 25th November 2002 ECC Simulation Limited may
               serve a notice to terminate the Term on 24th December 2003 and if
               it does so and if ECC Simulation Limited delivers to the Landlord
               vacant possession of the Demised Premises by 12 noon on 24th
               December 2003 the Term will end at 12 noon on 24th December 2003
               (rent being paid for all that day) but the termination will not
               affect any claim by either party in respect of antecedent
               breaches of the provisions of this lease

          (b)  The provisions of Clause 6(4)(a) hereof shall be null and void if
               ECC Simulation Limited (with the consent of the Landlord) grants
               an underlease of the whole of the Demised Premises or an
               Individual Unit at any time before 24th December 2003 which does
               not comply with the provisions of Clause 6(4)(d) hereof save if
               the Landlord at its discretion releases the provisions of this
               Clause 6(4)(b) in the Licence to Underlet

          (c)  Notwithstanding the provisions of Clauses 4(20)(d) and (e) of
               this lease ECC Simulation Limited shall not underlet the whole of
               the Demised Premises nor an Individual Unit after a notice to
               terminate has been served by the Tenant pursuant to Clause
               6(4)(a) hereof
  
          (d)  The provisions of Clauses 6(4)(b) and (c) above shall not apply
               in circumstances where an underlease of the whole of the Demised
               Premises or an Individual Unit contains an agreement authorised
               by the Court excluding the provisions of Sections 24-28
               (inclusive) of the Landlord and Tenant Act 1954 and is for a term
               which expires on or before 12 noon on 24th December 2003

                                      -39-


   
<PAGE>   42
          (e)  For the avoidance of doubt the benefit of the rights referred to
               in Clause 6(4)(a) hereof are personal to ECC Simulation Limited

     (5)  NOTICES

          The provisions of Section 196 of the Law of Property Act 1925 as
          amended by the Recorded Delivery Service Act 1962 shall apply to all
          notices required to be served under this lease

     (6)  MORTGAGEES AND SUPERIOR LANDLORD

          In this lease the powers rights matters and discretions reserved to or
          exercisable by the Landlord including powers to enter inspect repair
          maintain or alter the Demised Premises or any part of the Landlord's
          adjoining premises shall also be reserved to or exercisable by its
          mortgagees and by the Superior Landlord and their respective
          mortgagees servants agents or workmen

     (7)  SUPERIOR LANDLORD'S CONSENT

          In this lease where the consent or approval of the Landlord is
          required under this lease the giving of such consent or approval
          (which shall not be unreasonably withheld) shall be conditional upon
          the consent or approval of the Superior Landlord being obtained so far
          as may be required and the Landlord shall at the request and cost of
          the Tenant use all reasonable endeavours to obtain any such consents
          or approvals whenever they may be so required

     (8)  DISPUTES

          Any dispute arising as between the Tenant and the lessee or occupier
          of any adjacent or neighbouring premises belonging to the Landlord as
          to any easement right or privilege enjoyed or used in common shall be
          decided by the Landlord or the Landlord's surveyor whose decision

                                      -40-
<PAGE>   43
          (save in the case of manifest error) shall be binding upon all parties
          to the dispute

     (9)  COMPENSATION ON VACATING

          (a)  Any statutory right of the Tenant to claim compensation from the
               Landlord on vacating the Demised Premises shall be excluded as
               far as law may allow

          (b)  The Tenant shall indemnify the Landlord against any compensation
               payable by the Landlord pursuant to statute to any person
               deriving title to the whole or any part of the Demised Premises
               through or under the Tenant upon that person quitting where such
               compensation would not have been payable by the Landlord if the
               person quitting had been the lessee under a lease granted by the
               Landlord containing a clause in the form of Clause 6(9)(a)

     (10) RIGHTS OF ENTRY

          Notwithstanding anything contained in this lease all rights of entry
          into the Demised Premises referred to in Part 2 of the First Schedule
          to this lease and Clauses 4(10) 4(11) 4(14)(c) and 4(22) of this lease
          shall only be exercised in the company of an escort provided by ECC
          Simulation Limited (except in the case of emergency) and ECC
          Simulation Limited undertakes to provide such escort without delay as
          and when required. The provisions of this Clause 6(10) shall only
          apply while ECC Simulation Limited remains the tenant of the Demised
          Premises

     (11) INTERPRETATION

          (a)  Whenever the Demised Premises are vested in more than one person
               for the Term every covenant on the part of the Tenant herein
               contained shall be deemed to be made jointly and severally by
               those persons

                                      -41-
<PAGE>   44
          (b)  Words importing the masculine gender shall include the feminine
               gender and words in the singular shall include the plural

          (c)  The clause headings hereto shall not affect in any way the
               construction of this lease

     (12) DELIVERY

          The provisions of this lease (other than those contained in this
          clause) shall have no effect until this lease has been dated

     (13) LAW AND JURISDICTION

          (a)  This lease and the rights and obligations of the parties hereto
               shall be governed by and construed in accordance with English law

          (b)  Any suit action or proceeding arising out of or relating to this
               lease and any action or proceedings to execute or otherwise
               enforce any judgment obtained against the Tenant or the Surety
               for breach of this lease may be instituted in the Courts of
               England and Wales and by executing this lease the Tenant and the
               Surety both unconditionally and irrevocably submit to such
               jurisdiction

7.  THE Surety hereby covenants with the Landlord as follows:-

     (1)  That the Tenant will throughout the Term and also during such period
          as the Tenant remains in occupation of the Demised Premises pay the
          rents hereby reserved on the days and in manner aforesaid and shall
          duly perform and observe all the covenants hereinbefore on the
          Tenant's part contained and that in the event of the Tenant failing to
          do so the Surety will indemnify and keep indemnified the Landlord from
          and against all actions claims demands costs losses and expenses

                                      -42-
<PAGE>   45
               which may be brought or made against or sustained or incurred by
               the Landlord howsoever arising directly or indirectly out of or
               in connection with such failure PROVIDED ALWAYS and it is hereby
               agreed that any neglect or forbearance of the Landlord in
               endeavouring to obtain payment of the several rents when the same
               become payable or to enforce performance or observance of the
               Tenant's covenants and any time which may be given by the
               Landlord to the Tenant shall not release or exonerate or in any
               way affect the liability of the Surety under this covenant

     (2)  That if for any reason the term hereby granted shall be prematurely
          determined by forfeiture or if the same shall be disclaimed in
          circumstances releasing the Tenant from liability the Surety will (if
          so required by the Landlord within 60 days of the date of such
          forfeiture or disclaimer) accept from the Landlord a grant of a new
          lease of the Demised Premises from the date of such determination or
          disclaimer for the residue of the Term then unexpired at the same
          several rents hereinbefore reserved and subject to the like covenants
          and provisos as are herein contained and at the expense of the Surety
          and on the execution of such further lease the Surety shall execute
          and deliver to the Landlord a counterpart thereof or (as the case may
          be) the Surety shall accept the vesting in it of this lease

     (3)  That if the Landlord shall not require the Surety to take a lease of
          the Demised Premises pursuant to Clause 7(2) above the Surety shall
          nevertheless upon demand pay to the Landlord a sum equal to the rent
          and to all other payments that would have been payable under this
          lease but for the disclaimer in respect of the period from the date of
          the said disclaimer until the expiration of six months therefrom or
          until the Demised Premises shall have been relet by the Landlord
          whichever shall first occur

     (4)  The Surety represents and warrants to the Landlord that the Surety has
          full power authority and legal right to enter into the covenants
          contained in this Clause 7

                                      -43-
<PAGE>   46
     (5)  The rights and obligations of the parties hereto shall be governed and
          construed in accordance with English law

     (6)  The Surety hereby irrevocably:-

          (a)  agrees that the Courts of England and Wales shall have
               jurisdiction to hear and determine any suit action or proceeding
               arising out of our relating to this lease (including this Clause
               7) and

          (b)  waives to the fullest extent permitted by law any objection which
               the Surety may now or hereafter have to the jurisdiction of the
               Courts of England and Wales to hear and determine any suit action
               or proceeding arising out of or relating to this lease (including
               this Clause 7) or any claim that any such Court is not a
               convenient or appropriate forum

     (7)  The submission to the jurisdiction of the Courts referred to in Clause
          7(6) shall not (and shall not be construed as to) limit the right of
          the Landlord to take proceedings against the Surety in any other Court
          of competent jurisdiction nor shall the taking of proceedings in any
          one or more jurisdictions preclude the taking of proceedings in any
          other jurisdiction whether concurrently or not

8.   AGREEMENT FOR LEASE

     It is hereby certified that there is no agreement for lease to which this
     lease gives effect

                                      -44-
<PAGE>   47
     IN WITNESS whereof the parties have executed this lease as a Deed the day
     and year first before written
 

                      THE FIRST SCHEDULE ABOVE REFERRED TO
                                     PART 1
                                TENANT'S RIGHTS

1.   A right during the Term to uninterrupted passage and running of water soil
     drainage gas electricity and telephone lines and other services (in common
     with the Landlord and the Superior Landlord and all other persons having
     the like rights) through the sewers pipes drains cables wires or other
     conducting media in the Landlord's and the Superior Landlord's property
     adjoining or neighbouring the Demised Premises all such rights to cease and
     determine as and when and to the extent from time to time that the said
     services shall become adopted and maintainable at public expense and the
     right to enter upon the said adjoining or neighbouring property of the
     Landlord and the Superior Landlord to make any necessary connections
     thereto or to cleanse repair and renew the same the person exercising such
     rights causing as little inconvenience as possible and making good any
     damage thereby caused to the property so entered
  
2.   With the Landlord's prior written consent and upon reasonable prior written
     notice given to the Landlord and all other persons affected thereby the
     right of access into an upon the adjacent premises of the Landlord as may
     be requisite to enable the Tenant to comply with the Tenant's obligations
     herein contained subject to causing as little inconvenience as possible and
     making good any damage caused

3.   The Right during the Term to exhibit the Tenant's name and business details
     in such manner as the Landlord shall reasonably decide on the name board
     sign erected by the Landlord at the junction of Home Farm Road with Lewes
     Road pursuant to the provisions of the Superior Lease

                                      -45-
<PAGE>   48
                                     PART 2
                               LANDLORD'S RIGHTS

1.   Unto the Landlord and the Superior Landlord and all persons now or
     hereafter entitled thereto the right of free and uninterrupted passage and
     running of water soil drainage gas electricity telephone lines and other
     services from and to any adjoining or neighbouring property by or through
     the sewers pipes drains cables wires conduits and ducts and other
     conducting media which are or may hereafter during the Term be in under or
     upon the Demised Premises and the right to use the Soakaways for the
     purposes of drainage of rainwater and surface water from Unit 1 but all
     such rights hereinbefore reserved shall cease and determine as and when and
     to the extent from time to time that the said services shall become adopted
     and maintainable at public expense

2.   Unto the Landlord and the Superior Landlord and their respective tenants
     the right at any time and from time to time hereafter to build upon and use
     any of their adjoining or neighbouring land and rebuild or alter any of the
     buildings now or hereafter to be erected thereon according to such plans
     (whether as to height extent or otherwise) and in such manner as they deem
     fit notwithstanding any interference thereby occasioned to the access of
     light and air to the Demised Premises or any buildings now or hereafter to
     be erected on the site thereof

3.   Unto the Landlord and the Superior Landlord all of the air over a level of
     two metres above the ridge level of the building now constructed on the
     Demised Premises as shown on the drawing numbered 2 annexed hereto such
     level to extend horizontally over the building and elsewhere over the site
     thereof and over a level of one metre above the level of the fence now
     erected along the rear boundary of the Demised Premises

                                      -46-
<PAGE>   49
4.   Unto the Landlord and (in addition in the case of the right reserved in
     paragraph (iii) below the Landlord's tenant or tenants of Unit 1 or the
     owner or occupier of Unit 1) all persons authorised by the Landlord the
     right at reasonable times and on reasonable notice (except in emergency) to
     enter the Demised Premises for the purposes of (i) inspecting the condition
     and state of repair thereof (ii) carrying out any works (whether of repair
     or otherwise) for which the Tenant is liable and which the Tenant has
     failed to carry out pursuant to Clause 4(4) and (8) hereof (iii) carrying
     out any works (whether of repair or otherwise) to any property adjoining
     the Demised Premises or to any party structure sewer drain or other thing
     used by the Tenant in common with others (including without prejudice to
     the generality of the foregoing the Soakaways) subject to making good any
     damage to the Demised Premises caused by such entry

5.   Unto the Landlord with or without workmen and others the right to enter
     upon the Demised Premises for the purpose of carrying out the works
     referred to in paragraph 5 of Part 1 of the Third Schedule hereto

                     THE SECOND SCHEDULE above referred to

1.   That the Tenant will throughout the Term and also during such period as the
     Tenant remains in occupation of the Demised Premises pay the rents hereby
     reserved on the days and in manner aforesaid and shall duly perform and
     observe all the covenants hereinbefore on the Tenant's part contained and
     that in the event of the Tenant failing to do so the Surety will indemnify
     and keep indemnified the Landlord from and against all actions claims
     demands costs losses and expenses which may be brought or made against or
     sustained or incurred by the Landlord howsoever arising directly or
     indirectly out of or in connection with such failure PROVIDED ALWAYS and it
     is hereby agreed that any neglect or forbearance of the Landlord in
     endeavouring to obtain payment of the several rents when the same become
     payable or to

                                      -47-
<PAGE>   50
     enforce performance or observance of the Tenant's covenants and any time
     which may be given by the Landlord to the Tenant shall not release or
     exonerate or in any way affect the liability of the Surety under this
     covenant

2.   That if for any reason the term hereby granted shall be prematurely
     determined by forfeiture or if the same shall be disclaimed in
     circumstances releasing the Tenant from liability the Surety will (if so
     required by the Landlord) accept from the Landlord a grant of a new lease
     of the Demised Premises from the date of such determination or disclaimer
     for the residue of the Term then unexpired at the same several rents
     hereinbefore reserved and subject to the like covenants and provisos as are
     herein contained and at the expense of the Surety and on the execution of
     such further lease the Surety shall execute and deliver to the Landlord a
     counterpart thereof or (as the case may be) the Surety shall accept the
     vesting in it of this lease

3.   That if the Landlord shall not require the Surety to take a lease of the
     Demised Premises pursuant to paragraph 2 above the Surety shall
     nevertheless upon demand pay to the Landlord a sum equal to the rent and to
     all other payments that would have been payable under this lease but for
     the disclaimer in respect of the period from the date of the said
     disclaimer until the expiration of six months therefrom or until the
     Demised Premises shall have been relet by the Landlord whichever shall 
     first occur

                      THE THIRD SCHEDULE above referred to
                                     PART 1
                                 Service Costs

1.   The repair maintenance and replacement from time to time of any drains
     pipes cables and wires or other conducting media under any property
     adjoining or neighbouring the Demised Premises until such time and to the
     extent that the drains pipes cables and wires or other conducting media
     shall become adopted and maintainable at public expense

                                      -48-
<PAGE>   51
2.   Discharging all rates taxes assessments duties and impositions payable in
     respect of the common parts of the adjoining or neighbouring property of
     the Landlord the use of which is shared by the Tenant with others

3.   Construction repairing rebuilding and cleansing all party walls and fences
     and also sewers drains pipes wires and other things the use of which is
     common to the Demised Premises and any other premises and the said name
     board referred to in paragraph 3 of Part I of the First Schedule

4.   Maintaining and repairing the Grassed and Planted Areas save for any part
     of that area which is demised to a tenant

5.   Maintaining and keeping the landscaped areas within the Demised Premises
     well and properly cultivated and trimmed and cut and free from weeds and in
     a tidy condition and to ensure that the said landscaped areas are fully
     planted out with appropriate plants and shrubs

6.   Providing such other services or carrying out any other work which the
     Landlord shall from time to time reasonably consider necessary for the
     benefit of the Demised Premises and any other premises on the Landlord's
     adjoining or neighbouring property

7.   Management of the Demised Premises and the adjoining or neighbouring
     property of the Landlord by the Landlord's surveyor the management fee of
     the Landlord's Surveyor not to exceed 12 1/2% of the total cost incurred by
     the Landlord for the provision of the services referred to in Part 1 of
     this Third Schedule hereto

                                     PART 2
                                SERVICE CHARGES

                                      -49-

<PAGE>   52
1.   The Service Charge to be paid by the Tenant shall be such fair proportion
     (which may if appropriate be the whole amount) of the actual or
     anticipated Service Costs for each Service Charge Year which shall be
     assessed by the Landlord's Surveyor according to a reasonable and proper
     basis for apportionment applicable from time to time to the Demised
     Premises and the rights hereby granted

2.   The Landlord may make and send to the Tenant notice in writing of the
     Landlord's estimate of the anticipated Service Costs and the Service Charge
     applicable to the Demised Premises for each Service Charge Year and the
     Tenant shall pay such estimate of the Service Charge by equal quarterly
     instalments in advance on the usual quarter days

3.   The Landlord will (unless prevented by causes beyond its control) prepare
     and send to the Tenant a detailed statement of the actual Service Costs and
     Service Charge for each Service Charge Year as soon as practicable after
     the end of such year and in the event of the Service Charge for the Demised
     Premises exceeding the aggregate amount paid by the Tenant for such year
     the Tenant will pay the balance due to the Landlord forthwith and in the
     event of the aggregate amount being greater the excess will be credited by
     the Landlord by way of set-off against the next instalment of Service
     Charge due from the Tenant

                                        THE COMMON SEAL of ECC SIMULATION
                                        LIMITED was hereunto affixed in the
                                        presence of:-

                                        Director:

                                        Signatory:

                                        THE COMMON SEAL of ECC  )
                                        INTERNATIONAL CORP. was )
                                        hereunto affixed in the )
                                        presence of:-           )


                                        President:

                                        Secretary:

                                       
                                      -50-

<PAGE>   1

                                                                   EXHIBIT 10.22

                            DATED 1st December 1995

                       G J KING & SON (HOME FARM) LIMITED

                                    -- to --

                             ECC SIMULATION LIMITED

                                   -- and --

                             ECC INERNATIONAL CORP

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

                                   L E A S E

                               -- relating to --

                       Unit 3A Home Farm Business Centre
                        Lewes Road Brighton East Sussex

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

                                     [LOGO]
<PAGE>   2

THIS LEASE made the 1st December 1995

BETWEEN

(1)  G J KING & SON (HOME FARM) LIMITED whose registered office is situate at G
     J King Business Centre Reeds Lane Sayers Common West Sussex (hereinafter
     called "the Landlord") of the first part and

(2)  ECC SIMULATION LIMITED (company number 1913659) whose registered office is
     situate at Kingston Wharf Brighton Road Shoreham by Sea West Sussex
     (hereinafter called "the Tenant") of the second part and

(3)  ECC INTERNATIONAL CORP a company incorporated in the State of Delaware and
     whose principal place of business is at 175 Strafford Avenue Wayne PA
     19087-3377 USA (hereinafter called "the Surety") of the third part

WITNESSETH as follows:-

1.   IN this lease where the context so admits the following expressions shall
     have the following meanings respectively that is to say:-

     "the Landlord"
     means the Landlord hereinbefore named or such other person for the time
     being entitled to the reversion immediately expectant upon the
     determination of the Term

     "the Tenant"
     means the Tenant hereinbefore named or such other person in whom the Term
     shall for the time being be vested and wherever it includes more than one
     person the covenants on the part of the Tenant hereinafter contained shall
     be deemed to be joint and several

     "the Plan"
     means the plan numbered 1 annexed hereto

                                      -1-
<PAGE>   3

     "the Grassed and Planted Areas"
     means the grassed and planted areas which adjoin Home Farm Road Brighton
     East Sussex

     "Block 3"
     means the property shown for the purpose of identification only on the Plan
     and thereon edged green

     "the Forecourt"
     means the forecourt which is for the purpose of identification only hatched
     blue and coloured blue on the Plan

     "the Car Parking Spaces"
     means the fifteen car parking spaces marked A for the purpose of
     identification only on the Plan

     "the Demised Premises"
     means the land with the building erected thereon or on some part thereof
     known as Unit 3A Home Farm Business Centre Home Farm Road Brighton East
     Sussex as the same is shown for identification purposes only edged red on
     the Plan with the curtilage thereof and shall include any other building
     from time to time erected thereon or on some part thereof

     "the Fire Escape"
     means the fire escape which is for the purpose of identification only
     coloured yellow on the Plan

     "the Main Structure"
     means the roof foundations floor structures load bearing walls or frame
     stanchions beams window frames external walls external drains pipes and
     other external services of the Demised Premises

     "Insured Risks"
     means (subject to such exclusions and limitations as are imposed by the
     Insurers and to the extent that insurance cover against any

                                      -2-
<PAGE>   4



                                   [Figure]
<PAGE>   5
     particular risk is ordinarily available with a reputable insurer for
     property such as the Demised Premises) subsidence landslip heave fire
     explosion storm tempest lightning aircraft (not being hostile aircraft) and
     articles dropped therefrom riot civil commotion and flood and such other
     insurable risks against which the Landlord shall reasonably deem it
     desirable or expedient to insure

     "Term"
     means twenty one years commencing on 24th June 1995

     "the Rent Commencement Date"
     means                    1995

     "the Initial Rent"

     means the sum of FORTY THOUSAND POUNDS (pound sterling 40,000) a year
     exclusive of Value Added Tax

     "the First Reserved Rent"
     means the yearly rent reserved by Clause 2(A) hereof

     "the Secondly Reserved Rents"
     means

     (1)  a sum representing the cost reasonably and properly incurred or a
          fair proportion thereof (subject to the provisions of Clause 4(7)(h)
          hereof) of complying with the Landlords insuring covenant hereinafter
          contained

     (2)  all other sums payable by the Tenant under the covenants on the part 
          of the Tenant contained in this lease

     (3)  any interest chargeable under the provisions of this lease

     (4)  any additional insurance premiums payable by the Tenant arising under
          the provisions of Clause 4(7) of this lease

                                      -3-
<PAGE>   6
     (5)  all expenses costs fees and other sums incurred under the provisions
          Clause 4(24) hereof

     "the Review Dates"
     means 24th June 1998 24th June 2003 24th June 2008 and 24th June 2013

     "the Review Period"
     means the period starting with any Review Date up to and including the day
     immediately preceding the next Review Date or starting with the last Review
     Date up to the end of the Term

     "the Service Charge"
     means the sums payable by the Tenant in accordance with Part 2 of the
     Second Schedule hereto

     "the Service Charge Year"
     means the period of twelve months up to the 31st March each year or such
     other period as the Landlord shall from time to time choose

     "the Service Costs"
     means all costs expenses and outgoings whatsoever incurred by the Landlord
     in carrying out the works and providing the services set out in Part 1 of
     the Second Schedule hereto

     "the Landlord's Surveyor"
     means any person or firm of surveyors appointed by or acting for the
     Landlord including an employee of the Landlord to perform the function of a
     Surveyor for any purposes under this lease

     "the Superior Lease"
     means the lease of the Demised Premises and other land and premises dated
     4th June 1990 and made between Brighton Borough Council of the one part and
     the Landlord of the other part as varied by a Deed of Variation dated 5th
     July 1991 and made between Brighton Borough Council of the one part and the
     Landlord of the other part

                                      -4-


<PAGE>   7
     "the Superior Lessor"
     means Brighton Borough Council or such other person entitled to the benefit
     of the reversion expectant upon the determination of the Superior Lease

     "the Interest Rate" means the rate of Four per centum per annum above the
     base rate from time to time of The Royal Bank of Scotland PLC

     "the Planning Acts"
     means the Town and Country Planning Act 1990 the Planning (Consequential
     Provisions) Act 1990 the Planning (Hazardous Substances) Act 1990 and the
     Planning (Listed Building and Conservation Areas) Act 1990 or any statutory
     consolidation modification or re-enactment of all or any of the above Acts

     "CIL" means Computer Imprintable Label System Limited (the present
     tenants of the leases granted by the Landlord) or their assigns of the
     leases of Units 3B 3C and 3D

     "Unit 1 Option Agreement" means an agreement of even date with this Lease
     made between (1) the Landlord and (2) the Tenant whereby the Tenant has an
     option to take up a lease of Unit 1 in accordance with the provisions
     therein contained

     "Unit 1" means Unit 1 Home Farm Business Centre Home Farm Road Brighton
     East Sussex

     "Units 3B 3C and 3D" means the units adjoining the Demised Premises known
     as Units 3B 3C and 3D Home Farm Business Centre Home Farm Road Brighton
     East Sussex

     "Qualifying Person" means a company or corporation registered in the
     United Kingdom which has annual profits (which term shall have a meaning
     which is consistent with the term "profits for the financial year" where
     used in the Fourth Schedule to the Companies Act 1985) in 

                                      -5-
 
<PAGE>   8
     the United Kingdom as shown in such company's or corporation's properly
     audited financial statements for the last three 12 month accounting periods
     immediately preceding the proposed assignment of this lease to such company
     or corporation (the last of such accounting periods expiring not more than
     12 months prior to the date of such assignment) which are not less than the
     sum of the annual rents pursuant to clauses 2(A) and 2(B) of this lease for
     the year immediately prior to the date of such assignment multiplied by a
     factor of 2.5

2.   IN consideration of the rents and tenants covenants hereinafter reserved
     and contained the Landlord HEREBY DEMISES unto the Tenant the Demised
     Premises TOGETHER WITH the easements and rights specified in Part 1 of the
     First Schedule hereto EXCEPT AND RESERVED unto the Landlord and others the
     easements and rights specified in Part 2 of the First Schedule hereto TO
     HOLD the same unto the Tenant for the Term YIELDING AND PAYING to the
     Landlord without deduction during the Term and proportionately for any
     fraction of a year the rents set out hereunder

     (A)  The FIRST RESERVED RENT as hereinbefore defined being

          (1)  from and including the Rent Commencement Date until and including
               the day immediately preceding the first Review Date the Initial
               Rent; and

          (2)  during each successive Review Period a rent equal to the yearly
               rent previously payable hereunder or such increased rent as shall
               be ascertained in accordance with Clause 3 hereof whichever shall
               be the greater

     ALL such rents to be paid by equal quarterly instalments in advance on the
     usual quarter days in every year the first payment of the Initial Rent
     (apportioned in respect of the period from and including the Rent
     Commencement Date up to and including the day immediately preceding

                                      -6-

<PAGE>   9
     the next following quarter day) to be payable on the Rent Commencement Date

     (B)  The SECONDARY RESERVED RENTS as hereinbefore defined

          Such rents to be payable from and including the date hereof or (if
          earlier) the date of occupation (as determined by the Landlord or the
          Landlord's Surveyor) and to be paid to the Landlord within fourteen
          days of demand (except as otherwise provided)

3.   RENT REVIEW

     (1)  The increased rent for any Review Period shall be (having regard to
          current open market values) the open market yearly rent at which the
          whole of the Demised Premises might reasonably be expected to be let
          at the relevant Review Date

     (A)  On the following assumptions at the relevant Review Date:-

          (i)  that the Demised Premises are fit for immediate occupation and
               use and that no work has been carried out thereon by the Tenant
               its undertenants or their respective predecessors in title during
               the Term which has diminished the rental value of the Demised
               Premises and that in case the Demised Premises have been
               destroyed or damaged they have been fully restored

          (ii) that the Demised Premises are available to let in the open market
               by a willing landlord to a willing tenant as a whole without a
               premium but with vacant possession and subject to the provisions
               of this lease (other than the amount of the rent hereby reserved
               but including the provisions for rent review at intervals of
               every five years) for a term of ten years from the relevant
               Review 

                                      -7-

<PAGE>   10
               Date or the residue then unexpired of the term of this lease
               (whichever shall be the longer)

          (iii) that the convenants herein contained on the part of the Tenant
               and the Landlord have been fully performed and observed

     (B) But disregarding:-

          (i)  any effect on rent of the fact that the Tenant its undertenants
               or their respective predecessors in title have been in occupation
               of the Demised Premises; and

          (ii) any goodwill attached to the Demised Premises by reason of the
               carrying on thereat of the business of the Tenant its
               undertenants or their respective predecessors in title in their
               respective businesses; and

          (iii) any increase in rental value of the Demised Premises
               attributable to the existence at the relevant Review Date of any
               improvement to the Demised Premises or any part thereof carried
               out with consent where required by and at the expense of the
               Tenant its undertenants or their respective predecessors in title
               during Term otherwise than in pursuance of an obligation to the
               Landlord or its predecessors in title; and

          (iv) any effect on rental value of any obligation of the Tenant to
               remove alterations or to restore or reinstate the Demised
               Premises

          (v)  any rent free period or reduced rent period allowed to the Tenant
               under the terms of this lease

          (vi) the provisions of clause 6(3) hereof save for Clauses 6(3) (a)
               (c) and (h) hereof

                                      -8-
<PAGE>   11
     (2)  The increased rent for any Review Period may be agreed at any time
          between the Landlord and the Tenant or (in the absence of agreement)
          determined not earlier than the relevant Review Date by an arbitrator
          such arbitrator to be nominated in the absence of agreement by or on
          behalf of the President for the time being of the Royal Institution of
          Chartered Surveyors on the application of the Landlord or the Tenant
          made not earlier than six months before the relevant Review Date

     (3)  IT IS HEREBY FURTHER PROVIDED in relation to the ascertainment and
          payment of the reviewed rent as follows:-

          (A)  The arbitrator shall be a Chartered Surveyor having not less than
               ten years experience in letting and valuation of similar property
               and of similar sized properties to the Demised Premises
               throughout England

          (B)  The arbitration shall be conducted in accordance with the
               Arbitration Acts 1950 and 1979 or any statutory modification or
               re-enactment thereof for the time being in force with the further
               provision that if the arbitrator nominated pursuant to Clause 3
               hereof shall die or decline to act the President for the time
               being of the Royal Institution of Chartered Surveyors or the
               person acting on his behalf may on the application of either the
               Landlord or the Tenant by writing discharge the arbitrator and
               appoint another in his place

          (C)  When the increased rent has been ascertained as hereinbefore
               provided the Landlord and the Tenant shall record it forthwith by
               each signing and exchanging a separate written memorandum and the
               Landlord and the Tenant shall bear their own costs in respect
               thereof

          (D)  (i)  if the increased rent payable on and from any Review Date
                    has not been agreed by that Review

                                      -9-
<PAGE>   12
                    Date rent shall continue to be payable at the rate
                    previously payable and forthwith upon the increased rent
                    being ascertained the Tenant shall pay to the Landlord any
                    shortfall between the rent actually paid and the increased
                    rent payable from the relevant Review Date up to the quarter
                    day immediately following the date that the increased rent
                    is ascertained together with interest on each instalment
                    thereof from the date upon which the same would have been
                    payable if the increased rent had been ascertained on the
                    relevant Review Date to the date of actual payment thereof
                    at the rate of two per cent below the Interest Rate and the
                    interest so payable shall be recoverable in the same manner
                    as rent in arrear

               (ii) for the purposes of this proviso the increased rent shall be
                    deemed to have been ascertained on the date when the same
                    has been agreed between the Landlord and the Tenant or as
                    the case may be the date of the award of the arbitrator

          (E)  Time shall not be of the essence of this Rent Review clause

          (F)  If either the Landlord or the Tenant shall fail to pay any costs
               awarded against it in an arbitration under the provisions hereof
               within fourteen days of the same being demanded by the arbitrator
               the other shall be entitled to pay the same and the amounts so
               paid shall be repaid by the party chargeable on demand

     (4)  Without prejudice to the provisions of this Clause if on any Review
          Date there shall be in force any enactment which shall relate to the
          control of rents and/or which shall restrict 

                                      -10-
<PAGE>   13
          the Landlord's right to review the rent or recover any increased rent
          under this lease then the Landlord shall be entitled upon the
          termination or relaxation of such restriction to serve notice
          (hereinafter called "Interim Notice") upon the Tenant and from and
          after the date of the termination or relaxation of such restriction
          until the next Review Date (or until the end of the Term) as the case
          may be the rent shall be increased to whichever is the higher of the
          rent agreed or determined in accordance with the provisions
          hereinbefore contained but at the date of service of the Interim
          Notice (or such lesser sum as may be permitted) or the rent payable
          immediately prior thereto and the provisions of this Clause shall
          apply accordingly with the substitution of the date of the termination
          or relaxation of such restriction for the relevant Review Date

4.   THE Tenant hereby covenants with the Landlord as follows:-

     (1)  TO PAY RENT AND INTEREST

          (a)  To pay the rents hereby reserved unto the Landlord throughout the
               Term at all times and in manner aforesaid without any deduction
               whatsoever except as authorized by any statutory enactment for
               the time being in force

          (b)  If any of the rents hereby reserved shall be due but unpaid for
               14 days to pay interest thereon (if demanded by the Landlord)
               calculated on a daily basis with three monthly rents from the due
               date until receipt by the Landlord at the Interest Rate (the
               Interest Rate shall and apply before as well as after and
               notwithstanding any judgement of the Court) Provided that this
               sub-clause shall not prejudice any other right or remedy in
               respect of such reserved rents

                                      -11-
<PAGE>   14
          (c)  If following the occurrence of any of the events referred to in
               clause 6(1)(b) hereof acceptance of any of the rents hereby
               reserved shall be reasonably refused by the Landlord but shall
               subsequently be accepted without prejudice to any other right or
               remedy of the Landlord to pay interest thereon (if demanded by
               the Landlord) calculated on a daily basis with three monthly
               rents from the due date until acceptance and receipt by the
               Landlord at the Interest Rate (the Interest Rate shall apply
               before as well as after and notwithstanding any judgement of the
               Court) Provided that this sub-clause shall not prejudice any
               other right or remedy in respect of such reserved rents

     (2)  TO PAY SERVICE CHARGE AND INSURANCE

          (a)  To pay the Service Charge in the manner set out in Part 2 of the
               Second Schedule hereto

          (b)  To pay on demand therefor the sum representing the cost (subject
               to the provisions of clause 4(7)(h) hereof) of complying with the
               Landlord's insuring covenant hereinafter contained

     (3)  TO PAY RATES AND TAXES

          To pay and discharge all existing and future rates taxes charges
          duties assessments and outgoings whatsoever whether parliamentary
          local or otherwise now or hereafter imposed or charged upon the
          Demised Premises or any part thereof or upon the owner or any occupier
          thereof or payable by either in respect thereof (excluding any payable
          by the Landlord in respect of receipt of rent or any other payment
          made by the Tenant under this lease (except any VAT payable on rent or
          any other payment made by the Tenant under this lease) or on any
          disposition or dealing with or the ownership of the

                                      -12-
<PAGE>   15
          reversion of this lease) but including all charges in respect of water
          gas electricity and telecommunications used or consumed at the Demised
          Premises PROVIDED ALWAYS that the Tenant shall not agree or by default
          allow to be fixed the rateable value of the Demised Premises or any
          part thereof without the prior written consent of the Landlord such
          consent not to be unreasonably withheld

     (4)  TO REPAIR

          Well and substantially to repair cleanse maintain amend and keep in
          good and substantial repair the Demised Premises (including the Main
          Structure and all fixtures fittings Plant machinery and apparatus
          belonging thereto) and all additions made thereto and the walls fences
          drains appurtenances and decorations thereof and to renew and replace
          the same from time to time insofar as the same may be or become beyond
          repair at any time during or at the expiration of the Term (howsoever
          determined) damage in all such cases from any of the Insured Risks
          excepted so long as the Policy of insurance effected by the Landlord
          shall not have been vitiated or payment of any Policy moneys refused
          in whole or in part by reason of any act neglect or default of the
          Tenant its undertenants or their respective servants agents or
          licensees

     (5)  TO PAINT AND DECORATE

          In every third year of the Term and also during the last year thereof
          (howsoever determined) to paint in a proper and workmanlike manner the
          outside wood iron and other parts heretofore or usually painted of the
          buildings on Demised Premises and all additions thereto with two coats
          of good quality paint suitable for external use and for the surface
          and material to which it is to be applied such painting in the last
          year of the Term (howsoever determined) to be in colours previously
          approved in writing by the Landlord and in 

                                      -13-
<PAGE>   16
          every fifth year of the Term and also in the last year thereof
          (howsoever determined) to paint in a proper and workmanlike manner all
          the inside wood iron and other parts heretofore or usually painted of
          the buildings on the Demised Premises and all additions thereto with
          two coats of good quality paint suitable for the surface and material
          to which it is to be applied such Painting in the last year of the
          Term (howsoever determined) to be in colours Previously approved in
          writing by the Landlord And on the occasion of every such external
          painting to varnish or colour the external parts usually or previously
          so dealt with and on the occasion of very internal painting to varnish
          wash stop whiten and colour all such parts as have previously been or
          are usually so dealt with and to repaper with suitable paper of good
          quality (in the last year of the Term (howsoever determined in colours
          previously approved in writing by the Landlord) the parts previously
          or usually papered PROVIDED THAT for the avoidance of doubt the Tenant
          shall not be required to paint the external profiled sheet cladding in
          accordance with the covenant hereinbefore contained but shall keep the
          same cleansed and maintained as necessary throughout the Term

     (6)  TO CLEAN WINDOWS ETC

          To clean internally and externally the windows of the Demised Premises
          as often as occasion shall require and at least once in every month
          and at least once a week to remove all refuse rubbish and scrap which
          may have accumulated on the Demised Premises.

     (7)  INSURANCE

          (a)  Subject to the Landlord having supplied to the Tenant in writing
               full particulars of any policy of insurance effected on the
               Demised Premises and of any 

                                      -14-
<PAGE>   17
               modification or variation thereof not to do or omit or allow to
               be done or omitted any act matter or thing whatsoever whereby any
               policy of insurance effected on the Demised Premises or anything
               therein or on any adjoining or neighbouring premises of the
               Landlord may become void or voidable or the premiums payable for
               such insurance increased

          (b)  To the extent that any insurance premium payable in respect of
               any adjoining or neighbouring premises is increased by any use
               act neglect omission or default of the Tenant its undertenants or
               their respective servants agents or licensees in relation to the
               Demised Premises to pay the Landlord on demand the amount of such
               increase

          (c)  In the event of the Demised Premises or any part thereof being
               destroyed or damaged by any of the insured Risks to give
               immediate notice thereof in writing to the Landlord

          (d)  In the event of the Demised Premises or any part thereof being
               destroyed or damaged by any of the Insured Risks and the
               insurance money under any insurance effected against the same
               being wholly or partly irrecoverable (by reason of any act
               neglect omission or default of the Tenant its undertenants or
               their respective servants agents or licensees) then and in every
               such case the Tenant will pay to the Landlord forthwith the whole
               or (as the case may require) a fair proportion of the cost of
               completely rebuilding and reinstating the same

          (e)  Subject to the Landlord having supplied in writing to the Tenant
               full particulars thereof to comply with the requirements and
               recommendations of the Landlord's insurers

                                      -15-
<PAGE>   18
          (f)  Not to store on the Demised Premises any inflammable or any
               explosive combustible or deleterious substance save that the
               Tenant may store at the Demised Premises such reasonable
               quantities of inflammable substances in proper and safe
               containers as are normally used for its business SUBJECT TO the
               Tenant obtaining the Landlord's insurers prior written approval
               thereto and the Tenant paying any increase in insurance premium
               arising therefrom and on the reasonable request of the Landlord
               supplying to the Landlord details of the type and amounts of the
               substances stored on the Demised Premises

          (g)  To repay to the Landlord on demand the proper costs and expenses
               incurred in obtaining valuations of the Demised Premises for
               insurance purposes from time to time but so that such valuations
               shall not be carried out more frequently than once every three
               years

          (h)  The Landlord may retain for the Landlord's own benefit any
               commissions or discount received or obtained by the Landlord on
               or based on the gross premiums and other expenses which would
               otherwise be paid incurred or suffered by the Landlord in
               effecting or maintaining such insurance

          (i)  To insure and keep insured in the joint names of the Landlord and
               the Tenant and such other names as the Landlord may reasonably
               require all the plate glass or any substitute or alternative
               material used in windows (if any) and doors in the Demised
               Premises against breakage or damage howsoever caused with an
               insurance company of repute to the full reinstatement value
               thereof and public liability relevant to such breakage and pay
               all premiums necessary for that purpose and whenever required
               produce to the Landlord or its agent the policy of insurance and
               the receipt for the current 

                                      -16-
<PAGE>   19
               year's premium and whenever a claim arises to use the insurance
               money forthwith in reinstating the same with a like material to
               the reasonable satisfaction of the Landlord's Surveyor making up
               any deficiency out of the Tenant's own moneys

          (j)  To pay to the Landlord on demand the amount of any excess which
               may be applicable in the event of any claim in respect of any of
               the Insured Risks

     (8)  TO EXECUTE WORKS

          To execute all works on or in respect of the Demised Premises now or
          from time to time throughout the Term lawfully required to be executed
          by any local or public authority (including works required under the
          Health & Safety at Work etc. Act 1974 the Offices Shops and Railway
          Premises Act 1963 or any Act amending or replacing the same for the
          time being in force) whether the said works shall be required to be
          executed by the Landlord or by the Tenant and in all respects and at
          the Tenant's own expense to comply with and cause to be complied with
          the provisions of all statutes byelaws and regulations for the time
          being in force and the requirements of any competent authority
          affecting or relating to the Demised Premises or the use thereof and
          at all times to indemnify and to keep indemnified the Landlord and the
          Superior Lessor against all claims demands expenses and liability in
          respect thereof

     (9)  NOTICES RECEIVED

          Within seven days of receipt of the same to give full particulars to
          the Landlord of any notice direction or order or proposal for a notice
          direction or order made given or issued to the Tenant by any
          government department or local or public authority and if so required
          by the Landlord to 

                                      -17-
<PAGE>   20
          produce and supply copies of the same to the Landlord AND without
          delay to take all necessary steps to comply with the same AND ALSO at
          the request of the Landlord to make or join with the Landlord in
          making such objections or representations relating to the same as the
          Landlord shall deem expedient but with due regard being had to the
          Tenant's interest in the Demised Premises

     (10) TO PERMIT ENTRY TO VIEW

          To permit the Landlord and the Superior Lessor and their respective
          Surveyors or other agents during the Term at reasonable hours in the
          daytime on prior appointment to enter the Demised Premises to view the
          state of repair and condition of the same and to take inventories of
          the fixtures therein

     (11) TO PERMIT ENTRY TO REPAIR

          To permit the Landlord and the Superior Lessor or their respective
          agents or the Landlord's Surveyor with or without workmen at any time
          during the Term at reasonable hours in the daytime on prior
          appointment except in the case of emergency to enter upon the Demised
          Premises for the purpose of executing repairs or alterations to or in
          connection with any adjoining premises of the Landlord or the superior
          Lessor the Landlord or the Superior Lessor making good all damage
          thereby occasioned to the Demised Premises

     (12) TO REPAIR ON NOTICE

          To repair and make good to the satisfaction of the Landlord and the
          Superior Lessor all breaches of covenant defects and wants of
          reparation for which the Tenant may be liable under the covenants
          herein contained of which notice shall have 

                                      -18-
<PAGE>   21
          been given by the Landlord to the Tenant within two calendar months
          after the giving of such notice or sooner if requisite

     (13) TO COMPLY WITH STATUTORY REQUIREMENTS

          (a)  At all times to observe and comply with the provisions of or
               imposed under any statute licence or regulation regulating or
               permitting the use of the Demised Premises for the purpose for
               which they are for the time being used and the requirements of
               any competent authority in that connection and at the expense of
               the Tenant to do all that is necessary to obtain maintain and
               renew all licences and registrations required by law for the use
               of the Demised Premises for that purpose

          (b)  At the sole cost of the Tenant to comply with the Planning Acts
               for the time being in force and of all byelaws orders and
               regulations licences consents permissions and conditions made
               thereunder affecting the Demised Premises or any use thereof and
               to indemnify and keep harmless and indemnified the Landlord
               against any breach or non-performance of any such requirements
               and against all costs expenses penalties and levies thereby
               arising

     (14) PLANNING

          In relation to the Planning Acts:

          (a)  Not without the prior written consent of the Landlord such
               consent not to be unreasonably withheld or delayed to apply for
               permission to carry out on the Demised Premises any development
               requiring permission under the Planning Acts

                                      -19-
<PAGE>   22
          (b)  Not to implement any planning permission relating to the Demised
               Premises without the prior written consent of the Landlord such
               consent not to be unreasonably withheld or delayed but without
               prejudice to the generality of the foregoing such consent shall
               be given if in the opinion of the Landlord or the Landlord's
               Surveyor (whose decision shall be final) the value of the
               Landlord's reversionary interest is not affected thereby

          (c)  Whenever required to permit the Landlord to enter upon the
               Demised Premises to comply with any requirement lawfully made of
               it under the Planning Acts by any competent authority
               notwithstanding that any action reasonably necessary for
               compliance interferes with the Tenant's enjoyment of the Demised
               Premises

          (d)  To pay and satisfy any charge which may hereafter be imposed
               under the Planning Acts in respect of the carrying out of any
               operations or the institution or continuance of the use of the
               Demised Premises

          (e)  Unless the Landlord shall otherwise direct in writing to carry
               out and complete before the expiration or sooner determination of
               the Term any works stipulated to be carried out to the Demised
               Premises (notwithstanding that such works are to be carried out
               by a later date) as a condition of planning permission for any
               development begun before such expiration or sooner determination

          (f)  If the Tenant shall receive any compensation relating to the
               Tenant's interest hereunder due to any restriction placed upon
               the user of the Demised Premises as a result of the Planning Acts
               then if and when the Tenant's interest hereunder shall be
               determined by assignment or 

                                      -20-
<PAGE>   23
               under the power of re-entry herein contained the Tenant shall
               forthwith make such provision as is just and equitable for the
               Landlord to receive its due benefit from such compensation

     (15) PERMITTED USE

          Not to use or permit or suffer to be used the Demised Premises or any
          part thereof otherwise than solely and exclusively as and for use
          within Class B1(b) or (c) of the Town and Country Planning (Use
          Classes) Order 1987 (as originally enacted) and uses ancillary thereto

     (16) PROHIBITED USES

          Not to use the Demised Premises or any part thereof nor allow the same
          to be used as the premises of any public or local authority to which
          the public have access or for any public meeting exhibition or
          entertainment or for any illegal or immoral purpose or for the
          purposes of a club whether or not one where intoxicating liquor is
          supplied to members or their guests nor permit or suffer any sale by
          auction to be held on the Demised Premises or any part thereof or to
          sell serve or supply or permit or suffer to be sold served or supplied
          any intoxicating liquor thereon or therefrom (save that intoxicating
          liquor may be served to staff in any staff restaurant which is
          ancillary to the use permitted by Clause 4(15) hereof) or play or use
          or allow to be played or used any sound-producing instrument or
          apparatus on the Demised Premises or any part thereof so as to be
          audible outside the Demised Premises nor permit the Demised Premises
          to be used as a sleeping place for any person and not to use the
          Demised Premises or any part thereof or permit or suffer the same to
          be used for the purpose of any betting transactions or for gaming with
          or between persons resorting to the Demised Premises and not to make
          or permit or suffer to be made any 

                                      -21-
<PAGE>   24
          application for a Betting Office Licence or a Licence or registration
          under the Gaming Acts 1963 to 1968 in respect of any part of the
          Demised Premises

     (17) NUISANCE

          (a)  Not to do or commit or permit or suffer to be done or committed
               upon the Demised Premises or any part thereof any act or thing
               which shall be a nuisance annoyance or disturbance to the
               Landlord or the Superior Lessor or to the owners lessees or
               occupiers for the time being of any adjoining or neighbouring
               property or to the neighbourhood

          (b)  Not to place or cause to be placed or suffer to remain any good
               parcels refuse or rubbish in or about the Forecourt Car Parking
               Spaces pavements or entrances of the Demised Premises or
               otherwise obstruct the same and in all respects to conform to
               such reasonable rules and regulations as the Landlord may from
               time to time make in this respect in the interest of good estate
               management

          (c)  Not to park any vehicles on any part of Block 3 otherwise than in
               the Car Parking Spaces

     (18) ALTERATIONS

          (a)  Not at any time during the Term to make any alteration or
               addition to the sprinkler system (if any) or to make any
               alterations to the Demised Premises which effect the operation of
               the sprinkler system (if any) without first obtaining the consent
               in writing of the Landlord such consent not to be unreasonably
               withheld or delayed 

                                      -22-
<PAGE>   25
          (b)  Not at any time during the Term to make any alteration or
               addition to the electrical installation of the Demised Premises
               save in accordance with the terms and conditions laid down by the
               Institution of Electrical Engineer's and the Regulations of the
               Electrical Supply Authority;

          (c)  Not at any time during the Term to erect set up or maintain or
               suffer to be erected set up or maintained on the Demised Premises
               or any part thereof any building shed or similar structure
               whether of a permanent or temporary character

          (d)  Not at any time during the Term to make any change to the
               external design or appearance of the building constructed on the
               Demised Premises

          (e)  Not to cut maim alter or injure or suffer to be cut maimed
               altered or injured the Main Structure nor make any external or
               internal alterations in the plan or elevation of the building on
               the Demised Premises or in any party or other wall nor alter or
               change any of the materials or architectural decorations of the
               said building nor make or maintain or suffer to be made or
               maintained any addition thereto either in height or projection

          (f)  Not at any time during the Term to overload the floors or
               ceilings or the Main Structure in any way which imposes a weight
               or strain in excess of that which the building on the Demised
               Premises is constructed to bear with due margin for safety or
               which will in any way strain or interfere with the Main Structure

          (g)  Not to make any non-structural erection addition or alteration
               whatsoever to the Demised Premises (including  

                                      -23-
<PAGE>   26
               to walls timbers wires pipes drains appurtenances fixtures or
               fittings thereof) without the previous consent in writing of the
               Landlord (which consent shall not be unreasonably withheld or
               delayed) such consents to be without prejudice nevertheless to
               the provisions of this and sub-clauses (13 (14) and (26) hereof
               nor except in accordance with plans and specifications (with such
               additional copies thereof as the Landlord may reasonably require)
               previously submitted to and approved in writing by the Landlord
               nor carried out except to the satisfaction of its Surveyor

          (h)  Nothing herein contained in this sub-clause (18) shall prevent
               the Tenant from installing or removing internal non-structural
               demountable partitioning in the Demised Premises or installing
               suspended ceilings lighting and heating on the ground floor of
               the Demised Premises without the Landlord's consent provided such
               works do not adversely affect the services in the Demised
               Premises and the Tenant shall supply the Landlord with plans
               detailing the internal layout of the Demised Premises then
               current on demand by the Landlord and provided further that any
               suspended ceilings lighting and heating installed pursuant to
               this paragraph and any carpets laid by the Tenants shall be the
               property of the Tenant and may be removed by the Tenant on
               vacating the Demised Premises but all damage caused to the
               Demised Premises in removing such items shall be made good in a
               proper and workmanlike manner by the Tenant

          (i)  Any alterations or additions carried out to the Demised Premises
               (including without prejudice to the generality of the foregoing
               the suspended ceilings lighting and heating as aforesaid if these
               items are not removed by the Tenant) shall at the end or sooner
               determination of 

                                      -24-
<PAGE>   27
               the Term be reinstated by the Tenant if requested in writing by
               the Landlord so to do

     (19) SIGNS

          (1)  Not without the Previous written consent of the Landlord and the
               Superior Lessor (such consents not to be unreasonably withheld)
               to carry out or permit the painting or writing of any notice or
               advertisement whatsoever whether permanent or temporary on the
               glass of the windows or doors of the building on the Demised
               Premises or (except with the previous written consent of the
               Landlord and the Superior Lessor) the affixing or display of any
               bill notice doorplate sign or advertisement which projects over
               any street or land over which the public has access

          (2)  Without prejudice to the provisions of sub-clause (19)(1) of this
               Clause not to exhibit put up or permit upon any part of the
               exterior of the building on the Demised Premises and the open
               areas thereof without the previous consent in writing of the
               Landlord and the Superior Lessor (such consents not to be
               unreasonably withheld or delayed) any bill notice sign or
               advertisement other than such as relate solely to the Tenant its
               undertenants or other occupier's business for the time being
               carried on at the Demised Premises PROVIDED and it is hereby
               declared that if any bill notice sign or advertisement displayed
               in or upon any part of the exterior of the building on the
               Demised Premises or in or upon any part of the interior of the
               building on the Demised Premises which is visible from outside
               the building on the Demised Premises shall in the reasonable
               opinion of the Landlord or the Superior Lessor be unsightly
               undesirable or objectionable then the same shall be removed by
               the Tenant within twenty-four hours 

                                      -25-
<PAGE>   28
               after the receipt by the Tenant of notice requiring the Tenant so
               to do

     (20) ALIENATION ETC

          (a)  COMPLETE BAR ON CERTAIN DEALINGS

               Not to assign underlet or part with possession or part with or
               share occupation of the Demised Premises or any part thereof save
               as hereinafter provided

          (b)  SHARING OCCUPATION

               The Tenant may share occupation or possession of any part of the
               Demised Premises with any member of the group of companies (as
               defined in Section 42(1) of the Landlord and Tenant Act 1954) of
               which the Tenant is itself a member on the condition that:-

               (i)  no relationship of landlord and tenant is created between
                    the Tenant and any such company

               (ii) the possession or occupation shall forthwith be determined
                    if the Tenant and the relevant member shall cease for any
                    reason whatsoever to be members of the same group of
                    companies

               (iii) On written request from the Landlord or its agents the
                    Tenant shall supply in writing to the Landlord or its agents
                    details of the identity of any company as aforesaid let into
                    occupation

          (c)  ASSIGNING THE WHOLE

               Not to assign the whole of the Demised Premises

                                      -26-


   
<PAGE>   29
               (i)  without the Landlord's prior written consent such consent
                    not to be unreasonably withheld or delayed and

               (ii) except to an assignee who shall first have

                    (a)  entered into a direct covenant with the Landlord to
                         observe and perform the covenants and conditions on the
                         part of the Tenant contained in this lease

                    (b)  if reasonably so required by the Landlord procured a
                         covenant with the Landlord by an acceptable guarantor
                         or guarantors in the terms (mutatis mutandis) set out
                         in the Third Schedule hereto or in such other form as
                         the Landlord may reasonably require

          (d)  UNDERLETTING THE WHOLE

               Not to underlet the whole of the Demised Premises

               (i)  without the Landlord's prior written consent such consent
                    not to be unreasonably withheld

               (ii) except to an underlessee who shall first have

                    (a)  entered into a covenant with the Landlord to observe
                         and perform the covenants and conditions on the part of
                         the Tenant contained in this lease (other than the
                         covenant to pay rent) and

                    (b)  if reasonably so required by the Landlord (in the case
                         of an underlease for a term of more than 3 years)
                         procured a covenant with 

                                      -27-
   
<PAGE>   30
                         the Landlord by an acceptable guarantor or guarantors
                         in the terms (mutatis mutandis) set out in the Third
                         Schedule hereto or in such other form as the landlord
                         may reasonably require

               (iii) in consideration of any fine or premium

               (iv) without reserving a yearly rent payable in advance on the
                    usual quarter days equal to the then open market yearly
                    rental value of the Demised Premises and where the
                    underlease is for a term of more than 3 years such rent
                    shall be reviewable on the same dates and on the same terms
                    as the rent payable under this lease

               (v)  except on similar covenants and conditions to those
                    contained in this lease and in particular:

                    (a)  for the re-entry on breach of any covenant in the
                         underlease

                    (b)  that the underlease will contain similar terms as to
                         the carrying out of and the paying for repairs and
                         proper service charges

               (vi) without obtaining prior to the grant of the underlease an
                    Order of the Court excluding the provisions of Sections 24
                    to 28 (inclusive) of the Landlord and Tenant Act 1954 and
                    providing in the underlease that the landlord and tenant
                    thereunder have agreed to exclude such provisions

                                      -28-


<PAGE>   31
               (vii) without taking from any underlessee unqualified covenants
                    (which the Tenant shall enforce):

                    (a)  not to assign or underlet the whole of the Demised
                         Premises without prior written consent of the Landlord
                         (under this lease) such consent not to be unreasonably
                         withheld or delayed and

                    (b)  not to deal in any other way whatsoever with the
                         Demised Premises or any part thereof and

                    (c)  to obtain from any assignee of the underlease a
                         covenant with the Landlord (under this lease) to
                         observe and perform the covenants and conditions on the
                         part of the Tenant contained in this lease (other than
                         the covenant to pay rent) during the term granted by
                         the underlease

          (e)  RENT REVIEWS UNDER UNDERLEASES

               To procure that in any underletting the yearly rent is reviewed
               under such under lease in accordance with the terms of the under
               lease but not to agree any rent on review under any underlease
               without the prior written consent of the Landlord such consent
               not to be unreasonably withheld and (if the rent under the
               underlease is to be awarded by an arbitrator in accordance with
               the provisions therein contained) to procure that the Landlord's
               representations as to the yearly rent payable thereunder are made
               to the arbitrator to the reasonable satisfaction of the Landlord

          (f)  ENFORCEMENT OF COVENANTS

                                      -29-

<PAGE>   32
               To enforce the performance and observance by an underlessee of
               the provisions of the underlease and not at any time either
               expressly or by implication to waive any breach of the covenants
               or conditions on the part of the under lessee or assignee of any
               underlease nor without the consent of the Landlord (such consent
               not to be unreasonably withheld) to vary the terms

          (g)  AGREEMENT

               It is hereby expressly agreed and declared that if the Landlord
               (acting reasonably) shall not be satisfied that the yearly rent
               to be reserved by a proposed underlease is in accordance with
               sub-clause (20(d)(iv) of this Clause 4 then the Landlord may
               refuse its consent to such underletting and such refusal shall be
               deemed to be reasonable

     (21) TO REGISTER ANY DISPOSITION

          To give notice in writing of every assignment assent transfer under
          lease change of name charge or devolution of or other instrument
          relating to or affecting the Demised Premises and to produce a
          certified copy of the same within twenty one days after the execution
          or grant thereof to the solicitors of the Landlord and to pay their
          reasonable registration fee (and that of the Superior Lessor) in
          respect of each such instrument PROVIDED THAT registration of any such
          document shall not require the Landlord to consider the terms thereof
          and shall not be evidence that it has done so

     (22) RE-LETTING

          To permit the Landlord and the Superior Lessor or their agents at any
          reasonable time in the daytime on prior notice to enter upon the
          Demised Premises and to affix upon any 

                                      -30-
<PAGE>   33
          appropriate or suitable part thereof a notice board or boards for
          re-letting at any time six months prior to the expiration or sooner
          determination of the Term or at any time for selling and to permit all
          persons authorised by order in writing of the Landlord or its agents
          to view the Demised Premises at reasonable hours in the day time
          without interruption

     (23) EASEMENTS

          To take all necessary steps to prevent any encroachment upon the
          Demised Premises or the acquisition of any new right to light passage
          drainage or other easement over upon or under the Demised Premises and
          to give notice in writing to the Landlord of any threatened
          encroachment or attempt to acquire any such easement and throughout
          the Term to preserve unobstructed and undefeated all rights of light
          and other easements appertaining to the Demised Premises and not to
          permit or suffer but give notice in writing to the Landlord of any act
          matter or thing whereby a new easement or encroachment might come to
          be made into against over or upon the Demised Premises or any part
          thereof and to do all such things as the Landlord may reasonably
          require to prevent the same

     (24) LANDLORD'S COSTS

          To pay to the Landlord on an indemnity basis all reasonable and proper
          Solicitors' (as between a Solicitor and own client) counsels'
          surveyors' and other professional costs expenses and fees incurred by
          the Landlord


          (a)  In or in contemplation of any proceedings relating to the Demised
               Premises whether or not under Sections 146 or 147 of the Law of
               Property Act 1925 or the preparation and service of a notice
               thereunder (whether 

                                      -31-
<PAGE>   34
               or not any right of re-entry or forfeiture has been waived by the
               Landlord or a notice served on the Tenant has been complied with
               or the Tenant has enjoyed relief under the provisions of the said
               Act or forfeiture is avoided otherwise than by relief granted by
               the Court) and to keep the Landlord fully and effectively
               indemnified against all costs expenses claims and demands
               whatsoever in respect of such proceedings

          (b)  In the preparation and service of a schedule of dilapidations at
               any time during or after the Term and in the inspection of the
               works which are the subject of such schedule whether during or
               after the carrying out thereof

          (c)  In connection with the recovery of any arrears of the rents
               hereby reserved

          (d)  In respect of any application for consent required by this lease
               whether or not such consent is granted

     (25) TO YIELD UP

          At the expiration or sooner determination of the Term quietly to yield
          up the Demised Premises and any additions thereto so repaired painted
          cleansed maintained amended kept renewed and replaced as aforesaid

     (26) THE SUPERIOR LEASE ETC

          At all times during the Term to observe and perform the obligations on
          the part of the Landlord contained in the Superior Lease (except the
          obligation to pay the premium and the covenant contained in clause
          2(4)) insofar as the same relate to or affect the Demised Premises and
          to keep the Landlord fully and effectually indemnified against all

                                      -32-

<PAGE>   35
          actions proceedings damages costs expenses claims and demands
          whatsoever in respect of any breach thereof

     (27) VALUE ADDED TAX

          Whenever in this lease provision is made for the Tenant to pay any sum
          (including but without prejudice to the generality of the foregoing
          rent legal costs registration fees surveyors and other professional
          fees charges and expenses) on which Value Added Tax is payable or may
          at the election of the Landlord be payable (and provided that the
          Landlord does so elect) then the Tenant shall pay in addition to such
          sum Value Added Tax thereon at the rate appropriate at the time of
          supply PROVIDED THAT where the Value Added Tax supply is to the Tenant
          the Landlord shall provide the Tenant with a VAT invoice addressed to
          and in favour of the Tenant and where the VAT supply is to the
          Landlord the Tenant shall pay to the Landlord only that part of the
          Value Added Tax which the Landlord is not entitled to recover

     (28) PIPES AND DRAINS

          Not to obstruct or permit the obstruction of any pipes including the
          drains serving the Demised Premises by oil grease hair or other
          deleterious matter but to keep all pipes and drains in or serving the
          Demised Premises thoroughly cleaned as often as may be necessary

5.   THE Landlord hereby covenants with the Tenant that:-

     (1)  QUIET ENJOYMENT

          The Tenant paying the rents hereby reserved and performing and
          observing the several covenants conditions and agreements herein
          contained and on the Tenant's part to be performed and observed may
          peaceably and quietly hold and enjoy the Demised 

                                      -33-
<PAGE>   36
          Premises during the Term without any lawful interruption by the
          Landlord or any person rightfully claiming under or in trust for the
          Landlord

     (2)  THE SUPERIOR LEASE

          To observe and perform the covenants on the part of the Landlord
          contained in the Superior Lease but only so far as the Superior Lessor
          shall require the same to be observed and performed and except as they
          are by this lease expressly assumed by the Tenant

     (3)  TO INSURE

          To insure or cause to be insured the Demised Premises and all
          Landlord's fixtures and fittings therein or thereon of an insurable
          nature (other than those which the Tenant or other tenants may be
          entitled to remove) including all the glass herein (save for plate and
          other glass insured by the Tenant pursuant to clause 4(7)(a)) against
          (i) loss or damage by the Insured Risks in such sum (including any
          incidental expenses) as shall be determined from time to time by the
          Landlord to represent the reinstatement cost thereof as new together
          with all professional and other fees and expenses and the cost of site
          clearance and other incidental expenses (ii) public liability of the
          Landlord involving or relating to the Demised Premises or any part
          thereof and (iii) the loss of four years rent in some insurance office
          of repute and to supply a summary of such insurance and evidence of
          payment of the current premium to the Tenant on request once yearly
          and in the case of destruction or damage to the Demised Premises by
          any Insured Risk to immediately notify the insurer on receiving
          notification from the Tenant of the damage or destruction and to claim
          all sums due under the insurance policy and use all reasonable
          endeavours to procure the payment by the insurer of all sums properly
          due under the 

                                      -34-
<PAGE>   37
          insurance policy and apply for and use all reasonable endeavours to
          obtain all planning permissions building regulations consents and
          other consents or licences necessary to enable the Landlord to
          reinstate the Demised Premises and (unless payment of any money
          payable under any policy of insurance shall be wholly or partly
          withheld or refused either in consequence of any exclusion or
          qualification imposed by insurers or of any act neglect or default of
          the Tenant its undertenants or their respective servants agents or
          licensees) to ensure that all insurance moneys (other than for loss of
          rent and public liability) received by the Landlord are with all
          convenient speed (subject to the necessary labour and materials being
          procurable and to all necessary statutory consents being obtained)
          laid out and applied in rebuilding repairing or otherwise reinstating
          the Demised Premises and to make up any deficiency out of its own
          monies

     (4)  INSURANCE PROCEEDS

          Subject to the provisions for reinstatement contained in sub-clause
          (3) of this Clause 5 the building Insurance proceeds shall belong to
          the Landlord for its own use and benefit absolutely

     (5)  NOTIFICATION TO INSURERS

          The Landlord will notify its insurers of the Tenant's interest in the
          Demised Premises and have it noted on the policy or policies of
          insurance

6.   PROVIDED ALWAYS and it is hereby agreed and declared as follows:-

     (1)  FORFEITURE AND RE-ENTRY

                                      -35-
 
<PAGE>   38
          That this lease is made upon the express condition that if (a) any of
          the rents hereby reserved shall be unpaid for twenty one days after
          the due dates whether the same shall have been lawfully demanded or
          not or (b) any Tenant's convenant shall not have been observed or
          performed or (c) if the Tenant being an individual or firm shall
          become bankrupt or be the subject of an interim order under Part VIII
          of the Insolvency Act 1986 or being a Company shall go into either
          compulsory or voluntary liquidation (except for the purpose of
          reconstruction or amalgamation) or shall have an administration order
          made in respect of it under the Insolvency Act 1986 or if an
          administrative receiver or a receiver shall be appointed or (d) the
          Tenant shall enter into composition or arrangement with creditors or
          shall suffer any distress or execution to be levied on the goods of
          the Tenant then and in any of the said cases and at any time
          thenceforth it shall be lawful for the Landlord or its authorised
          agent to re-enter into or upon the Demised Premises and to repossess
          and enjoy the same as if this lease had not been made but without
          prejudice to any right of action or remedy of either party in respect
          of any antecedent breach of any of the convenants by the other herein
          contained

     (2)  RENT CESSER

          If during the Term the Demised Premises or any part thereof shall be
          destroyed or damaged by any Insured Risk so as to be unfit for
          occupation or use and the policy of insurance effected by the Landlord
          shall not have been vitiated or payment of the policy moneys wholly or
          partly withheld or refused by reason of any act neglect or default of
          the Tenant its undertenants or their respective servants agents or
          licensees the First Reserved Rent or a fair proportion thereof
          according to the nature and extent of the damage sustained shall be
          suspended until the Demised Premises shall again be fit for occupation
          and use or until the expiration 

                                      -36-
<PAGE>   39
          of four years from the date of the damage or destruction whichever
          shall be the earlier and any dispute shall be referred to the award of
          a single arbitrator to be appointed in default of agreement upon the
          application of either party by the President for the time being of the
          Royal Institution of Chartered Surveyors in accordance with the
          provisions of the Arbitration Acts 1950 and 1979 or any statutory
          modification thereof for the time being in force

     (3)  DETERMINATION

          (a)  If within four years from the date of such damage or destruction
               as aforesaid of the Demised Premises reinstatement or rebuilding
               of the Demised Premises has not been practically completed then
               after the expiration of the said four year period but only before
               such practical completion as aforesaid either party may give
               written notice to the other terminating this lease three months
               from the date of such notice whereupon this lease shall
               absolutely determine and the rights and obligations of the
               parties shall cease but without prejudice to any right or claim
               arising hereunder and still subsisting at the date of
               determination

          (b)  At any time before 25th January 1997 and Landlord may serve a
               notice on the Tenant to terminate the Term on 23rd June 1998 and
               if the Landlord does so the Term will end at 12 noon on the 23rd
               June 1998 (rent being paid for all that day) but the termination
               will not affect any claim by either party in respect of
               antecedent breaches of the provisions of this lease Provided that
               no such notice to terminate this Lease shall be given by the
               Landlord unless simultaneously therewith he provides reasonably
               evidence that CIL require the Demised Premises for their own use
               and occupation

                                      -37-
<PAGE>   40
          (c)  At any time before the 25th March 1997 the Tenant may serve a
               notice on the Landlord to terminate the Term on 23rd June 1998
               and if the Tenant does so and if the Tenant delivers to the
               Landlord vacant possession of the Demised Premises by 12 noon on
               the 23rd June 1998 the Term will end at 12 noon on the 23rd June
               1998 (rent being paid for all that day) but the termination will
               not affect any claim by either party in respect of antecedent
               breaches of the provisions of this lease

          (d)  The provisions of clause 6(3)(c) hereof shall be null and void if
               the Tenant (with the consent of the Landlord under this Lease)
               grants an underlease of the Demised Premises at any time before
               23rd June 1998 which does not comply with the provisions of
               sub-paragraph (g) hereof save if the Landlord at its discretion
               releases the provisions of this clause 6(3)(d) in the licence to
               underlet

          (e)  Notwithstanding the provisions of clauses 4(20)(d) of this Lease
               the Tenant shall not underlet the Demised Premises after a notice
               to terminate has been served by the Landlord pursuant to clause
               6(3)(b) hereof or served by the Tenant pursuant to clause 6(3)(b)
               hereof

          (f)  Provided that if the Landlord or the Tenant serve notice pursuant
               to sub-paragraphs (b) or (c) hereof and the Tenant exercises the
               option to take a lease of Unit 1 pursuant to the Unit 1 Option
               Agreement the Term will end at 12 noon on the date which is 3
               months after the Rent Commencement Date as defined in the Unit 1
               Option Agreement

          (g)  The provisions of sub-paragraphs (d) and (e) above shall not
               apply in circumstances where an underlease contains an agreement
               authorised by the Court excluding the 

                                      -38-
<PAGE>   41
               provisions of Sections 24 to 28 (inclusive) of the Landlord and
               Tenant Act 1954 and is for a term which expires on or before 23rd
               June 1998

          (h)  At any time before 29th September 2002 the Tenant may serve a
               notice to terminate the Term on 25th December 2003 and if it does
               so and if the Tenant delivers to the Landlord vacant possession
               of the Demised Premises by 12 noon on 25th December 2003 the Term
               will end at 12 noon on 25th December 2003 (rent being paid for
               all that day) but the termination will not affect any claim by
               either party in respect of antecedent breaches of the provisions
               of this lease

          (i)  The provisions of clause 6(3)(h) hereof shall be null and void if
               the Tenant (with the consent of the Landlord under this lease)
               grants an underlease of the Demised Premises or any part thereof
               at any time before 25th December 2003 which does not comply with
               the provisions of sub-paragraph (k) hereof save if the Landlord
               at its discretion releases the provisions of this clause 6(3)(i)
               in the Licence to Underlet

          (j)  Notwithstanding the provisions of clauses 4.20(d) and (e) of this
               lease the Tenant shall not underlet the Demised Premises after a
               notice to terminate has been served by the Tenant pursuant to
               clause 6(3)(h) hereof

          (k)  The provisions of sub-paragraphs (i) and (j) above shall not
               apply in circumstances where an underlease contains an agreement
               authorised by the Court excluding the provisions of Sections
               24-28 (inclusive) of the Landlord and Tenant Act 1954 and is for
               a term which expires on or before 12 noon on 25th December 2003

     (4)  NOTICES

                                      -39-

<PAGE>   42
          The provisions of section 196 of the Law of Property Act 1925 as
          amended by the Recorded Delivery Service Act 1962 shall apply to all
          notices required to be served under this lease

     (5)  MORTGAGEES AND SUPERIOR LESSOR

          In this lease the powers rights matters and discretions reserved to or
          exercisable by the Landlord including powers to enter inspect repair
          maintain or alter the Demised Premises or any part of the Landlord's
          adjoining premises shall also be reserved to or exercisable by its
          Mortgagees and by the Superior Lessor and their respective servants
          agents or workmen

     (6)  SUPERIOR LESSOR'S CONSENT

          In this lease where the consent of the Landlord is required to any
          matter the Superior Lessor's consent shall also be obtained by the
          Tenant if appropriate

     (7)  DISPUTES

          Any dispute arising as between the Tenant and the lessee or occupier
          of any adjacent or neighbouring premises belonging to the Landlord as
          to any easement right or privilege enjoyed or used in common shall be
          decided by the Landlord or the Landlord's Surveyor whose decision
          (save in the case of manifest error) shall be binding upon all parties
          to the dispute

     (8)  COMPENSATION

          Subject to section 38(2) of the Landlord and Tenant Act 1954 neither
          the Tenant nor any assignee or underlessee of the Term or of the
          Demised Premises shall be entitled on quitting the Demised Premises to
          any compensation under the said Act 

                                      -40-
<PAGE>   43
     (9)  LANDLORD AND TENANT ACT 1954

          Having been authorised so to do by an Order of the Lambeth County
          Court dated 28th November 1995 under the provisions of the Landlord
          and Tenant Act 1954 Section 38(4) the Landlord and the Tenant agree
          that the provisions of the Landlord and Tenant Act 1954 Sections 24 to
          28 inclusive shall be excluded in relation to the tenancy created by
          this lease

     (10) RIGHTS OF ENTRY

          Notwithstanding anything contained in this Lease all rights of entry
          into the Demised Premises (whether by the Landlord or its employees or
          agents or other owners tenants or occupiers of the Landlord's
          adjoining or neighbouring property) shall only be exercised in the
          company of an escort provided by ECC Simulation Limited (except in the
          case of emergency) and ECC Simulation Limited undertakes to provide
          such escort without delay when required The provisions of this clause
          6(10) shall only apply while ECC Simulation Limited remains the Tenant
          of the Demised Premises

     (11) RELEASE OF TENANT

          (a)  Subject to compliance with the provisions of clause 4(20)(c) then
               upon and with effect from completion of a lawful assignment of
               the whole of the Demised Premises by the person at that time
               being the Tenant ("the Assignor") to another ("the Assignee")
               where either the Assignor is a Qualifying Person or the Assignee
               is a Qualifying Person the Assignor shall cease to have any
               liability for any future breach or non observance or non
               performance of the covenants on the part of the Tenant contained
               in this Lease and any surety of the Assignor shall cease to have
               any liability for any future breach 

                                      -41-

<PAGE>   44
               or non observance or non performance of the covenants on the part
               of the Tenant contained in this Lease pursuant to any convenants
               given in any guarantee or agreement between such surety and the
               Landlord PROVIDED ALWAYS

               (i)  that the Assignor and any surety of the Assignor shall
                    nevertheless remain liable in respect of any subsisting
                    breach of the said covenants occurring prior to the date of
                    the lawful assignment; and

               (ii) that the Assignor and any surety of the Assignor shall
                    enter into a Deed of Guarantee whereby the Assignor and any
                    surety of the Assignor covenants with the Landlord as surety
                    (in the form reasonably acceptable to it) incorporating a
                    standard of obligations similar to those set out in Third
                    Schedule hereto but adapted to suit the circumstances in
                    which the guarantee is given for the period during which the
                    Assignee remains liable as tenant under the terms of this
                    Lease.

               (b)  If the Assignor and any surety of the Assignor are not
                    released from their respective liabilities by the operation
                    of this clause 6(11) because neither the Assignor or the
                    Assignee is a Qualifying Person then the Assignor and any
                    surety of the Assignor shall in any event cease to have any
                    liability for any future breach or non observance or non
                    performance of the covenants on the part of the Tenant
                    contained in this Lease with effect from the date of the
                    first lawful assignment thereafter by a person at that time
                    being the Tenant to another where either of those persons is
                    a Qualifying Person.

                                      -42-
<PAGE>   45
     (12) INTERPRETATION

          (a)  Whenever the Demised Premises are vested in more than one person
               for the Term every covenant on the part of the Tenant herein
               contained shall be deemed to be made jointly and severally by
               those persons

          (b)  Words importing the masculine gender shall include the feminine
               gender and words in the singular shall include the plural

          (c)  The clause headings hereto shall not affect in any way the
               construction of this lease

     (13) DELIVERY

          The provisions of this lease (other than those contained in this
          clause) shall have no effect until this lease has been dated

     (14) NO AGREEMENT FOR LEASE

          It is hereby certified that there is no agreement for lease to which
          this lease gives effect

7.   SURETY OF COVENANTS

     The Surety hereby covenants with the Landlord as follows:-

     (1)  That the Tenant will throughout the Term and also during such period
          as the Tenant remains in occupation of the Demised Premises pay the
          rents hereby reserved on the days and in manner aforesaid and shall
          duly perform and observe all the covenants hereinbefore on the
          Tenant's part contained and that in the event of the Tenant failing to
          do so the Surety will indemnify and keep indemnified the Landlord from
          and against all actions claims demands costs losses and expenses 
          which 

                                      -43-
<PAGE>   46
          may be brought or made against or sustained or incurred by the
          Landlord howsoever arising directly or indirectly out of or in
          connection with such failure PROVIDED ALWAYS and it is hereby agreed
          that any neglect or forbearance of the Landlord in endeavouring to
          obtain payment of the several rents when the same become payable or to
          enforce performance or observance of the Tenant's covenants and any
          time which may be given by the Landlord to the Tenant shall not
          release or exonerate or in any way affect the liability of the Surety
          under this covenant

     (2)  That if for any reason the term hereby granted shall be prematurely
          determined by forfeiture or if the same shall be disclaimed in
          circumstances releasing the Tenant from liability the Surety will (if
          so required by the Landlord within 60 days of the date of such
          forfeiture or disclaimer) accept from the Landlord a grant of a new
          lease of the Demised Premises from the date of such determination or
          disclaimer for the residue of the Term then unexpired at the same
          several rents hereinbefore reserved and subject to the like covenants
          and provisos as are herein contained and at the expense of the Surety
          and on the execution of such further lease the Surety shall execute
          and deliver to the Landlord a counterpart thereof or (as the case may
          be) the Surety shall accept the vesting in it of this lease

     (3)  That if the Landlord shall not require the Surety to take a lease of
          the Demised Premises pursuant to Clause 7(2) above the Surety shall
          nevertheless upon demand pay to the Landlord a sum equal to the rent
          and to all other payments that would have been payable under this
          lease but for the disclaimer in respect of the period from the date of
          the said disclaimer until the expiration of six months therefrom or
          until the Demised Premises shall have been relet by the Landlord
          whichever shall first occur

     (4)  The Surety represents and warrants to the Landlord that the Surety has
          full power authority and legal right to enter into the covenants
          contained in this Clause 7

                                      -44-
<PAGE>   47
     (5)  The rights and obligations of the parties hereto shall be governed and
          construed in accordance with English law

     (6)  The Surety hereby irrevocably:-

          (a)  agrees that the Courts of England and Wales shall have
               jurisdiction to hear and determine any suit action or proceeding
               arising out of or relating to this lease (including this Clause
               7) and

          (b)  waives to the fullest extent permitted by law any objection which
               the Surety may now or hereafter have to the jurisdiction of the
               Courts of England and Wales to hear and determine any suit action
               or proceeding arising out of or relating to this lease (including
               this Clause 7) or any claim that any such Court is not a
               convenient or appropriate forum

     (7)  The submission to the jurisdiction of the Courts referred to in Clause
          7(6) shall not (and shall not be construed as to) limit the right of
          the Landlord to take proceedings against the Surety in any other Court
          of competent jurisdiction nor shall the taking of proceedings in any
          one or more jurisdictions preclude the taking of proceedings in any
          other jurisdiction whether concurrently or not

     IN WITNESS whereof the parties have executed this lease as a Deed the day
     and year first before written

                      THE FIRST SCHEDULE above referred to

                                      -45-
<PAGE>   48
                                     PART 1

                                 TENANTS RIGHTS

1.   A right of way at all times during the Term for the Tenant its underlessees
     and their respective agents employees and licensees in common with the
     Landlord and all other person having the like right with or without
     vehicles over the part of the Forecourt hatched blue at all times and for
     all purposes connected with the use and enjoyment of the Demised Premises

2.   An exclusive right at all times during the Term to use the Car Parking
     Spaces for the parking of private motor cars in connection with the use and
     enjoyment of the Demised Premises

3.   A right of escape in the case of emergency for the Tenant its underlessees
     and their respective agents employees and licensees in common with the
     Landlord and all other person having a like right over along across and
     down the Fire Escape

4.   A right during the Term to uninterrupted passage and running of water soil
     drainage gas electricity and telephone lines and other services (in common
     with the Landlord and the Superior Lessor and all other persons having the
     like right) through the sewers pipes drains cables wires or other
     conducting media in the Landlord and the Superior Lessor's property
     adjoining or neighbouring the Demised Premises all such rights to cease and
     determine as and when and to the extent from time to time that the said
     services shall become adopted and maintainable at public expense and the
     right to enter upon the said adjoining or neighbouring property of the
     Landlord and the Superior Lessor to make any necessary connections thereto
     or to cleanse repair renew the same the person exercising such right
     causing as little inconvenience as possible and making good any damage
     thereby caused to the property so entered

5.   With the Landlord's prior written consent not to be unreasonably withheld
     or delayed and upon reasonable prior written notice given to

                                      -46-
<PAGE>   49
     the Landlord and all other persons affected thereby the right of access
     into and upon the adjacent premises of the Landlord as may be requisite to
     enable the Tenant to comply with the Tenant's obligations herein contained
     subject to causing as little inconvenience as possible and making good any
     damage caused

6.   The right during the Term to exhibit the Tenant's name and business details
     in such manner as the Landlord shall reasonably decide on the name board
     sign erected by the Landlord at the junction of Home Farm Road with Lewes
     Road pursuant to the provisions of the Superior Lease

                                     PART 2
                                LANDLORDS RIGHTS

1.   Unto the Landlord and the Superior Lessor and all persons now or hereafter
     entitled thereto the right of free and uninterrupted passage and running of
     water soil drainage gas electricity telephone lines and other services from
     and to any adjoining or neighbouring property by or through the sewers
     pipes drains cables wires conduits and ducts and other conducting media
     which are or may hereafter during the Term be in under or upon the Demised
     Premises and the right to use the Soakaways for the purposes of drainage of
     rainwater and surface water from Unit 1 but all such rights hereinbefore
     reserved shall cease and determine as and when and to the extent from time
     to time that the said services shall become adopted and maintainable at
     public expense

2.   Unto the Landlord and the Superior lessor and their respective tenants the
     right at any time and from time to time hereafter to build upon and use any
     of their adjoining or neighbouring land and rebuild or alter any of the
     buildings now or hereafter to be erected thereon according to such plans
     (whether as to height extent or otherwise) and in such manner as they deem
     fit notwithstanding any interference thereby occasioned to the access of
     light and air to the Demised Premises or any buildings now or hereafter to
     be erected on the site thereof

                                      -47-

<PAGE>   50
3.   Unto the Landlord and the Superior Lessor all of the air space from a level
     two metres above the ridge level of the building now constructed on the
     Demised Premises as shown on the drawing numbered 2532/54 annexed hereto

4.   Unto the Landlord with or without workmen and others the right to enter
     upon the Demised Premises for the purpose of carrying out the works
     referred to in paragraph 5 of Part 1 of the Second Schedule hereto

5.   Unto the Landlord and all persons authorised by the Landlord the right at
     reasonable times and on reasonable notice (except in emergency) to enter
     the Demised Premises and/or the Car Parking Spaces for the purposes of (i)
     inspecting the condition and state of repair thereof (ii) carrying out any
     works (whether of repair or otherwise) for which the Tenant is liable and
     which the Tenant has failed to carry out pursuant to Clause 4(4) and (8)
     hereof (iii) carrying out any works (whether of repair or otherwise) to any
     property adjoining the Demised Premises or to any party structure sewer
     drain or other thing used by the Tenant in common with others subject to
     making good any damage to the Demised Premises


                     THE SECOND SCHEDULE above referred to

                                     PART 1
                                 SERVICE COSTS

1.   The repair maintenance and replacement from time to time of any drains
     pipes cables and wires or other conducting media under any property
     adjoining or neighbouring the Demised Premises until such time and to the
     extent that the drains pipes cables and wires or other conducting media
     shall become adopted and maintainable at public expense

2.   The repair and maintenance from time to time of the Forecourt including the
     Car Parking Spaces and the Fire Escape

                                      -48-
<PAGE>   51
3.   The repair and maintenance of external lighting for Block 3

4.   The repair and maintenance of the burglar alarm system for Block 3

5.   The maintenance of the landscaped areas within Block 3 so as to keep the
     landscaped areas properly cultivated and trimmed and cut and free from
     weeds and in a tidy condition and to ensure that the landscaped areas are
     fully planted out with appropriate plants and shrubs

6.   Any insurance premiums expended by the Landlord in respect of the Grassed
     and Planted Area

7.   Discharging all rates taxes assessments duties and impositions payable in
     respect of the common parts of the adjoining or neighbouring property of
     the Landlord the use of which is shared by the Tenant with others

8.   Repairing maintaining and renewing the boundary fence at the rear of Block
     3

9.   Constructing repairing rebuilding and cleansing all party walls and fences
     and also sewers drains pipes wires and other things the use of which is
     common to the Demised Premises and any other premises and the said name
     board referred to in paragraph 3 of Part 1 of the First Schedule hereto

10.  Maintaining and repairing the Grassed and Planted Areas

11.  Providing such other services or carrying out any other work which the
     Landlord shall from time to time reasonably consider necessary for the
     benefit of the Demised Premises and any other premises on the Landlord's
     adjoining or neighbouring property

12.  Management of the Demised Premises and the adjoining or neighbouring
     property of the Landlord by the Landlord's surveyor the reasonably and
     proper management fee of the Landlord's Surveyor not to exceed 12 1/2% of 

                                      -49-
<PAGE>   52
     the total cost incurred by the Landlord for the provision of the services
     referred to in this Part 1 of the Second Schedule hereto


                                     PART 2
                                 SERVICE CHARGE

1.   The Service Charge to be paid by the Tenant shall be such fair proportion
     (which may if appropriate be the whole amount) of the actual or anticipated
     Service Costs for each Service Charge Year which shall be assessed by the
     Landlord's Surveyor according to a reasonable and proper basis for
     apportionment applicable from time to time to the Demised Premises and the
     rights hereby granted

2.   The Landlord may make and send to the Tenant notice in writing of the
     Landlord's estimate of the anticipated Service Costs and the Service Charge
     applicable to the Demised Premises for each Service Charge Year and the
     Tenant shall pay such estimate of the Service Charge by equal quarterly
     instalments in advance on the usual quarter days

3.   The Landlord will (unless prevented by causes beyond its control) prepare
     and send to the Tenant a detailed statement of the actual Service Costs and
     Service Charge for each Service Charge Year as soon as practicable after
     the end of such year and in the event of the Service Charge for the Demised
     Premises exceeding the aggregate amount paid by the Tenant for such year
     the Tenant will pay the balance due to the Landlord forthwith and in the
     event of the aggregate amount being greater the excess will be credited by
     the Landlord by way of set-off against the next instalment of Service
     Charge due from the Tenant


                      THE THIRD SCHEDULE above referred to

1.   That the Tenant will throughout the Term and also during such period as the
     Tenant remains in occupation of the Demised Premises pay the 

                                      -50-
<PAGE>   53
     rents hereby reserved on the days and in manner aforesaid and shall duly
     perform and observe all the covenants hereinbefore on the Tenant's part
     contained and that in the event of the Tenant failing to do so the Surety
     will indemnify and keep indemnified the Landlord from and against all
     actions claims demands costs losses and expenses which may be brought or
     made against or sustained or incurred by the Landlord howsoever arising
     directly or indirectly out of or in connection with such failure PROVIDED
     ALWAYS and it is hereby agreed that any neglect or forbearance of the
     Landlord in endeavouring to obtain payment of the several rents when the
     same become payable or to enforce performance or observance of the Tenant's
     covenants and any time which may be given by the Landlord to the Tenant
     shall not release or exonerate or in any way affect the liability of the
     Surety under this covenant

2.   That if for any reason the term hereby granted shall be prematurely
     determined by forfeiture or if the same shall be disclaimed in
     circumstances releasing the Tenant from liability the Surety will (if so
     required by the Landlord) accept from the Landlord a grant of a new lease
     of the Demised Premises from the date of such determination or disclaimer
     for the residue of the Term then unexpired at the same several rents
     hereinbefore reserved and subject to the like covenants and provisos as are
     herein contained and at the expense of the Surety and on the execution of
     such further lease the Surety shall execute and deliver to the Landlord a
     counterpart thereof or (as the case may be) the Surety shall accept the
     vesting in it of this lease

3.   That if the Landlord shall not require the Surety to take a lease of the
     Demised Premises pursuant to paragraph 2 above the Surety shall
     nevertheless upon demand pay to the Landlord a sum equal to the rent and to
     all other payments that would have been payable under this lease but for
     the disclaimer in respect of the period from the date of the said
     disclaimer until the expiration of six months therefrom or until the
     Demised Premises shall have been relet by the Landlord whichever shall
     first occur 

                                      -51-
<PAGE>   54
                                        THE COMMON SEAL of ECC
                                        (SIMULATION LIMITED was
                                        (hereunto affixed in the
                                        (presence of:-

                                        Director:

                                        Authorised
                                        Signatory

                                        THE COMMON SEAL of ECC  )
                                        INTERNATIONAL CORP. was )
                                        hereunto affixed in the )
                                        presence of:-           )

                                        President:

                                        Secretary:

                                      -52-

<PAGE>   1
                                                                  EXHIBIT 10.23

                            ECC INTERNATIONAL CORP.
                            EXECUTIVE SAVINGS PLAN

     WHEREAS, many senior level employees of ECC International Corp. (the
"Company") are unable to participate fully in the ECC International Corp.
Savings and Investment Plan (the "Savings and Investment Plan") as a result of
limitations imposed by various provisions of the Internal Revenue Code of 1986,
as amended, (the "Code"); and

     WHEREAS, the Company wishes to provide a mechanism by which such executives
may be encouraged and aided in saving part of their compensation for retirement;

     NOW, THEREFORE, the Company has established an Executive Savings Plan (the
"Plan") upon the following terms:

     1. Effective January 1, 1996 (the "Effective Date"), any employee who is an
executive may be designated as a Participant in the Plan by designation of the
Committee on Employee Benefit Plans (the "Committee"), provided that such
individual earns more than a minimum amount set by the Committee, which amount
must be sufficient for such individual to qualify as a Highly Compensated
Employee under the Code during each year of participation. The Plan Year of the
Plan shall end on June 30. The first Plan Year of the Plan shall be the period
beginning on the Effective Date and ending on June 30, 1996.

     2. Election to Participate. Any individual designated as a Participant may
elect to participate in the Plan by submitting a 

<PAGE>   2
form to the Committee electing a percentage of compensation, from 3% to 6% (in
increments of 1%), that will be deposited in the Plan's Investment Accounts. For
the first Plan Year of the Plan, such election must be made on or before the
Effective Date. For any subsequent Plan Year, such election must be made prior
to the first day of the Plan Year. Any individual who elects to participate must
elect not to participate in the Savings and Investment Plan for each fiscal year
during which the individual is participating in this Plan. An individual shall
not be deemed to have participated in the Savings and Investment Plan by virtue
of his account under such plan being adjusted for investment earnings, or by
virtue of his account under such plan receiving a contribution that relates to
compensation earned in a prior Plan Year or prior to the Effective Date of this
Plan. If the Company determines that the Participant has actively participated
in the Savings and Investment Plan while participating in Executive Savings
Plan, then the amount contributed to the Plan's Investment Account on behalf of
such Participant for that Plan Year will be forfeited and returned to the
Company.

     3. Deposit of Funds. The percentage of compensation elected by the
Participant as a Plan contribution will be withheld from all compensation paid
during said Plan Year. Compensation is defined as a Participant's base salary,
plus management incentive and marketing incentive. All amounts withheld will be
deposited in Investment Accounts, as described in Section 5 below, and as 

                                      -2-
<PAGE>   3
directed by the Participant. Each Investment Account will be in the name of
the Participant.

     4. Company Contribution. The Company will contribute an amount equal to 75%
of the amount contributed by the Participant, taking into account only
Participant contributions that do not exceed 6% of the Participant's
compensation. Company contributions shall be made at the same time and in
proportion to the Participant contributions up to the annual maximum. The
contribution will be deposited in the same Investment Account as the
Participant contribution.

     5. Investment Accounts. The Participant contributions and matching Company
contributions will all be deposited in one or more Investment Accounts that are
invested in Vanguard mutual funds, as selected by the Participant from among the
Vanguard mutual funds selected for such purpose by the Committee. The
Participant shall be permitted to change his investment election with respect to
the Vanguard mutual funds once per calendar quarter by providing written notice
to the Committee. Subject to any limitations imposed by Vanguard, the
Participant is free to redirect contributions which are in these Investment
Accounts into any other investment account that the Participant wishes to
establish. However, if there is any forfeiture of Company contributions arising
as a result of the Participant's decision to participate in the Savings and
Investment Plan, then the 

                                      -3-
<PAGE>   4
Participant shall return to the Company all amounts deposited during the year 
of such participation.

     6. General Administration. This Plan shall be administered by the
Committee, which has the authority to interpret all the Plan's provisions and to
implement its terms. It is understood that the Participant contributions are not
entitled to any special income tax treatment and that all contributions are
fully taxable to the individual under the Code, when earned. Withholding with
respect to the Company contributions will be made out of the other amounts paid
to the Participant for the pay period during which the contributions will be
made.

     7. Termination of Participation; Changes in Participant Contributions. Any
individual may elect to cease participation in the Plan at any time by providing
written notice to the Committee. A Participant may change the amount of the
Participant's contributions once per calendar quarter by providing written
notice to the Committee. If any individual ceases to be a Participant during a
Plan Year, that individual may not participate in the Plan for the remainder of
the Plan Year.

     8. Amendment and Termination of the Plan. The company may at any time amend
the Plan by written instrument, notice of which shall be given to all
Participants. In addition, the Company may at any time terminate the Plan.

     9. Not a Contract of Employment. This Plan shall not constitute a contract
of employment between the Company and the 

                                      -4-
<PAGE>   5
Participant. Nothing in this Plan shall give a Participant the right to be 
retained in the service of the Company or to interfere with the right of the 
Company to discipline or discharge a Participant at any time.

     10. Governing Law. The provisions of this Plan shall be construed and
interpreted according to the laws of the Commonwealth of Pennsylvania.

     11. Validity. In case any provision of this Plan shall be held illegal or
invalid for any reason, said illegality or invalidity shall not affect the
remaining parts hereof, but this Plan shall be construed and enforced as if such
illegal and invalid provision had never been inserted herein.

     12. Notice. Any notice required or permitted under the Plan shall be
sufficient if in writing and hand delivered or sent by registered or certified
mail. Such notice shall be deemed as given as of the date of delivery or, if
delivery is made by mail, as of the date shown on the postmark on the receipt
for registration or certification. Mailed notice to the Committee shall be
directed to the Company's address.

     13. Successors. The provisions of this Plan shall bind and inure to the
benefit of the Company and its successors and assigns. The term successors as
used herein shall include any corporate or other business entity that, whether
by merger, consolidation, purchase or otherwise, acquired all or

                                      -5-

<PAGE>   6
substantially all of the business and assets of the Company, and successors of 
any such corporation or other business entity.

     IN WITNESS WHEREOF, the company has caused this instrument to be executed
by its officer thereunto duly authorized as of the 15 day of December, 1995.


                                        ECC INTERNATIONAL CORP.


                                        By:

                                        Title:

                                      -6-


<PAGE>   1
                                                                  Exhibit 11

                 SCHEDULE OF COMPUTATION OF EARNINGS PER SHARE
                     (In Thousands, Except Per Share Data)
                                  (Unaudited)

<TABLE>    
<CAPTION>
                                                    Six Months    Six Months
                                                       Ended         Ended
                                                    December 31   December 31
                                                        1995          1994
<S>                                                 <C>            <C>

Primary                                             

Net Income                                          $    3,246      $    2,525
                                                    ==========      ==========

Weighted Average Shares Outstanding                  7,724,559       7,609,346

Incremental Shares from Assumed
  Exercise of Stock Options                            198,444         315,125
                                                    ----------      ----------

Total Shares                                         7,923,003       7,924,471
                                                    ==========      ==========

Primary Per Share Amounts

Net Income                                          $     0.41      $     0.32
                                                    ==========      ==========

Fully Diluted* 

Net Income                                          $    3,246      $    2,525
                                                    ==========      ==========

Weighted Average Shares Outstanding                  7,724,559       7,609,346

Incremental Shares from Assumed
  Exercise of Stock Options                            198,444         302,849
                                                     ---------      ----------

Total Shares                                         7,923,003       7,912,195
                                                    ==========      ==========

Fully Diluted Per Share Amounts                     

Net Income                                          $     0.41      $     0.32
                                                    ==========      ==========


</TABLE>

* Fully diluted earnings per share calculation is presented in accordance with
  Regulation S-K item 601(b)(11) although not required by footnote 2 to
  paragraph 14 of Accounting Principles Board Opinion No. 15 because it results
  in dilution of less than 3%.

 


<PAGE>   2
                                                                    Exhibit 11

                 SCHEDULE OF COMPUTATION OF EARNINGS PER SHARE
                     (In Thousands, Except Per Share Data)
                                  (Unaudited)
<TABLE>
<CAPTION>

                                         Three Months            Three Months
                                            Ended                   Ended
                                         December 31             December 31
                                            1995                    1994

<S>                                     <C>                      <C>
Primary

Net Income                               $    1,559               $    1,189
                                         ==========               ==========
Weighted Average Shares Outstanding       7,724,891                7,554,038

Incremental Shares from Assumed
  Exercise of Stock Options                 146,170                  302,757
                                         ----------               ----------
Total Shares                              7,871,061                7,856,795
                                         ==========               ==========

Primary Per Share Amounts

Net Income                               $     0.20               $     0.15
                                         ==========               ==========

Fully Diluted*

Net Income                               $    1,559               $    1,189
                                         ==========               ==========

Weighted Average Shares Outstanding       7,724,891                7,554,038

Incremental Shares from Assumed
  Exercise of Stock Options                 183,304                  307,057
                                         ----------               ----------
Total Shares                              7,908,195                7,861,095
                                         ==========               ==========

Fully Diluted Per Share Amounts

Net Income                               $     0.20               $     0.15
                                         ==========               ==========

</TABLE>

* Fully diluted earnings per share calculation is presented in accordance 
  with Regulation S-K item 601(b)(11) although not required by footnote 2
  to paragraph 14 of Accounting Principles Board Opinion No. 15 because it
  results in dilution of less than 3%.


<TABLE> <S> <C>

<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JUN-30-1996
<PERIOD-START>                             JUL-01-1995
<PERIOD-END>                               DEC-31-1995
<CASH>                                           5,165
<SECURITIES>                                         0
<RECEIVABLES>                                   15,627
<ALLOWANCES>                                        93
<INVENTORY>                                     14,493
<CURRENT-ASSETS>                                66,504
<PP&E>                                          53,850
<DEPRECIATION>                                  29,278
<TOTAL-ASSETS>                                  93,012
<CURRENT-LIABILITIES>                           22,398
<BONDS>                                         16,235
                                0
                                          0
<COMMON>                                           775
<OTHER-SE>                                      52,035
<TOTAL-LIABILITY-AND-EQUITY>                    93,012
<SALES>                                         58,671
<TOTAL-REVENUES>                                58,671
<CGS>                                           45,907
<TOTAL-COSTS>                                   45,907
<OTHER-EXPENSES>                                   314
<LOSS-PROVISION>                                    65
<INTEREST-EXPENSE>                                 851
<INCOME-PRETAX>                                  4,959
<INCOME-TAX>                                     1,703
<INCOME-CONTINUING>                              3,246
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,246
<EPS-PRIMARY>                                      .41
<EPS-DILUTED>                                      .41
        

</TABLE>


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