INTERFACE SYSTEMS INC
8-K, 1998-06-03
COMPUTER PERIPHERAL EQUIPMENT, NEC
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                    FORM 8-K


     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


         Date of Report (Date of earliest event reported): May 19, 1998


                             INTERFACE SYSTEMS, INC.
               (Exact name of registrant as specified in charter)


         MICHIGAN                      0-10902                 38-1857379
(State or other jurisdiction   (Commission File Number)      (IRS Employer
    of incorporation)                                      Identification No.)


                              5855 Interface Drive
                            Ann Arbor, Michigan 48103
               (Address of principal executive offices) (Zip Code)

       Registrants' telephone number, including area code: (734) 769-5900





<PAGE>   2



                             INTERFACE SYSTEMS, INC.
                           CURRENT REPORT ON FORM 8-K


ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS.

(a) On May 19, 1998, Interface Systems, Inc. (the "Company" or "ISI") completed
the sale of the distribution business of its wholly owned U.K. subsidiary,
Interface Systems International Ltd. (the "ISIL Distribution Business") to
Fayrewood plc, a U.K. company quoted on the Alternative Investment Market of the
London Stock Exchange ("Fayrewood"), pursuant to a Purchase Agreement, dated May
19, 1998, by and among Fayrewood, Doctor Buylines Limited ("Doctor Buylines"),
Interface Systems International Limited ("ISIL") and the Company, and a Deed of
Variation, dated May 19, 1998, by and among Fayrewood, Doctor Buylines, ISIL and
the Company.

The consideration for the sale of the ISIL Distribution Business of $3.6 million
is approximately equal to 83% of the net assets sold and is subject to
post-closing adjustments based upon an audit of the assets sold and the
liabilities assumed at closing. The net assets sold consist of accounts
receivable, inventory and fixed assets, net of accounts payable. An initial
payment of $2.9 million was paid in cash at closing. The balance of the
consideration is due in approximately 60 days upon completion of an audit of
the net assets sold. The consideration paid in the sale was determined through
arms-length negotiations between the Company and Fayrewood. 

(b)       Not applicable.

ITEM 7.  FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

(a)       Not applicable.

(b)       The pro forma financial information furnished herein reflects the
          disposition of the ISIL Distribution Business on the consolidated
          financial statements of the Company.

<TABLE>
<CAPTION>
                                                                                 Page Number
                                                                                 -----------
<S>                                                                                 <C>   
         Unaudited Pro Forma Consolidated Statement of
           Operations for the Fiscal Year Ended September 30, 1997                    F-2

         Unaudited Pro Forma Consolidated Statement of Operations
           for the Fiscal Year Ended September 30, 1996                               F-3

         Unaudited Pro Forma Consolidated Statement of Operations
           for the Fiscal Year Ended September 30, 1995                               F-4

         Unaudited Pro Forma Consolidated Balance Sheet as of March 31, 1998          F-5
</TABLE>


<PAGE>   3


(c)       The exhibits furnished in connection with this Report are as follows:

           Exhibit
           Number          Description
           ------          -----------

              2.1          Purchase Agreement dated as of May 13, 1998 by and 
                           among Fayrewood plc, Doctor Buylines Limited,
                           Interface Systems International Limited and Interface
                           Systems, Inc.

              2.2          Deed of Variation dated as of May 19, 1998 by and 
                           among Fayrewood plc, Doctor Buylines Limited,
                           Interface Systems International Limited and Interface
                           Systems, Inc.

              2.3          Deed of Release dated as of May 13, 1998 by and 
                           among The First National Bank of Chicago,
                           Interface Systems International Limited and
                           Interface Systems, Inc.



                                    SIGNATURE

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.

Date:  June 3, 1998                 Interface Systems, Inc.
                                    (Registrant)

                                    By:               /s/ John R. Ternes
                                    Name:             John R. Ternes
                                    Title:            Vice president Finance &
                                                      Chief Financial Officer



<PAGE>   4


                      PRO FORMA CONSOLIDATED FINANCIAL DATA

The following Unaudited Pro Forma Consolidated Statements of Operations of the
Company for the fiscal years ended September 30, 1997, 1996 and 1995 reflect 
(i) the ISIL Distribution Business as a discontinued operation and (ii) the 
application of the estimated net proceeds of the sale by the Company in May 
1998 of the ISIL Distribution Business as if the relevant transactions, 
including the loss of $1,791,000 on disposal of the discontinued operations 
recognized in the quarter ended March 31, 1998, had occurred at the beginning 
of the fiscal year ended September 30, 1995.  Pro Forma Consolidated
Statements of Operations for the six months ended March 31, 1998 and 1997 have
not been presented herein because the information that would be presented is
substantially the same as that contained in the Company's previously filed Form
10-Q for the quarter ended March 31, 1998.

The following Unaudited Pro Forma Consolidated Balance Sheet of the Company as
of March 31, 1998 reflects the sale of the ISIL Distribution Business as if it
had occurred on that date.

The pro forma statements do not purport to represent what the Company's
financial position or results of operations would actually have been if the
relevant transactions had occurred at the beginning of the fiscal year ended
September 30, 1995 or on March 31, 1998, or to project the Company's
consolidated results of operations or financial position at any future date or
for any future period.

























                                       F-1


<PAGE>   5



            UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                      FISCAL YEAR ENDED SEPTEMBER 30, 1997
                                 (In thousands)


<TABLE>
<CAPTION>
                                                                      Discontinuance
                                                                        of the ISIL
                                                            ISI        Distribution       Pro Forma
                                                       Consolidated      Business        As Adjusted
                                                       ------------      --------        -----------
<S>                                                     <C>            <C>              <C>      
Net revenues                                            $  81,845       $  (62,761)     $  19,084
Cost of revenues                                           75,103          (60,462)        14,641
                                                        ----------      -----------     ---------
       Gross profit                                         6,742           (2,299)         4,443
Expenses:
   Product development                                      3,719               --          3,719
   Selling, general and administrative                     15,391           (5,924) (1)     9,467
                                                        ----------      -----------     ---------
       Operating income (loss) from
         continuing operations                            (12,368)           3,625         (8,743)
Interest expense                                             (731)             309           (422)
Other income                                                  119               (3)           116
                                                        ----------      -----------     ---------
       Income (loss) from continuing
          operations before income taxes                  (12,980)           3,931         (9,049)
Income tax benefit                                         (2,101)              --         (2,101)
                                                        ----------      -----------     ---------
Income (loss) from continuing operations                $ (10,879)      $    3,931      $  (6,948)
                                                        ==========      ===========     =========

Net loss per share                                      $   (2.47)                      $   (1.58)
                                                        ==========                      =========

Weighted average shares outstanding                         4,411                           4,411
                                                        ==========                      =========

</TABLE>



(1)      Includes elimination of $520,000 of goodwill amortization and 
         write-off related to ISI's investment in the ISIL distribution business
         and $120,000 of professional fees and other general and administrative
         expense incurred by ISI on behalf of ISIL.









                                       F-2


<PAGE>   6
            UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                      FISCAL YEAR ENDED SEPTEMBER 30, 1996
                                 (In thousands)

<TABLE>
<CAPTION>
                                                     Discontinuance
                                                       of the ISIL
                                              ISI     Distribution  Pro Forma
                                         Consolidated   Business    As Adjusted
                                         ------------   --------    -----------
<S>                                         <C>        <C>         <C>     
Net revenues                                $74,583    $(56,312)   $ 18,271
Cost of revenues                             63,798     (53,386)     10,412
                                            -------    --------    --------
       Gross profit                          10,785      (2,926)      7,859
Expenses:
   Product development                        1,956          --       1,956
   Selling, general and administrative       11,621      (2,757)(1)   8,864
                                            -------    --------    --------
       Operating income (loss) from
         continuing operations               (2,792)       (169)     (2,961)
Interest expense                               (340)        276         (64)
Other income                                    200          --         200
                                            -------    --------    --------
       Income (loss) from continuing
          operations before income taxes     (2,932)        107      (2,825)
Income tax benefit                             (969)         --        (969)
                                            -------    --------    --------
Income (loss) from continuing operations    $(1,963)   $    107    $ (1,856)
                                            =======    ========    ========

Net loss per share                          $ (0.44)               $  (0.42)
                                            =======                ========

Weighted average shares outstanding           4,440                   4,440
                                            =======                ========

</TABLE>

(1)  Includes elimination of $100,000 of goodwill amortization expense incurred
     by ISI related to its investment in ISIL.


                                       F-3


<PAGE>   7

            UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                      FISCAL YEAR ENDED SEPTEMBER 30, 1995
                                 (In thousands)


<TABLE>
<CAPTION>
                                                                      Discontinuance
                                                                        of the ISIL
                                                            ISI        Distribution       Pro Forma
                                                       Consolidated      Business        As Adjusted
                                                       ------------      --------        -----------
<S>                                                     <C>             <C>             <C>      
Net revenues                                            $  70,243       $  (48,009)     $  22,234
Cost of revenues                                           57,516          (45,434)        12,082
                                                        ---------       ----------      ---------
       Gross profit                                        12,727           (2,575)        10,152
Expenses:
   Product development                                      1,454               --          1,454
   Selling, general and administrative                     10,506           (2,927)(1)      7,579
                                                        ---------       ----------      ---------
       Operating income (loss) from
         continuing operations                                767              352          1,119
Interest expense                                             (264)             253            (11)
Other income                                                  203               --            203
                                                        ---------       ----------      ---------
       Income (loss) from continuing
          operations before income taxes                      706             (605)         1,311
Income tax benefit                                            540               --            540
                                                        ---------       ----------      ---------
Income (loss) from continuing operations                $     166       $     (605)     $     771
                                                        =========       ==========      =========

Net loss per share                                      $    0.04                       $    0.18
                                                        =========                       =========

Weighted average shares outstanding                         4,239                           4,239
                                                        =========                       =========
</TABLE>





(1)  Includes elimination of $100,000 of goodwill amortization expense incurred
     by ISI related to its investment in ISIL.




                                      F-4
<PAGE>   8




                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                              AS OF MARCH 31, 1998
                                 (IN THOUSANDS)
<TABLE>
<CAPTION>

                                                                Discontinuance        Sale
                                                                  of the ISIL      of the ISIL
                                                    ISI          Distribution     Distribution        Pro Forma
                                               Consolidated        Business         Business         As Adjusted
                                               ------------        --------         --------         -----------
<S>                                              <C>              <C>               <C>              <C>      
Assets
Current assets:
   Cash and cash equivalents                     $   1,049        $      --         $      --        $   1,049
   Accounts receivable, net                         12,864          (10,155)               --            2,709
   Inventories                                       5,780           (2,610)               --            3,170
   Net assets of discontinued operations               --             5,810            (5,040)             770
   Other current assets                              2,746             (629)               --            2,117
                                                 ---------        ----------        ----------       ---------
          Total current assets                      22,439           (7,584)           (5,040)           9,815
Property and equipment, net                          4,298             (596)               --            3,702
Other assets                                         1,478               --                --            1,478
                                                 ---------        ----------        ----------       ---------
                                                 $  28,215        $  (8,180)        $  (5,040)       $  14,995
                                                 =========        ==========        ==========       =========

Liabilities and Stockholders' Equity 

Current liabilities:
   Notes payable                                 $   7,609        $      --         $  (3,249) (1)   $   4,360
   Accounts payable                                  9,176           (7,748)               --            1,428
   Accrued expenses and other                        1,588             (432)               --            1,156
                                                 ---------        ----------        ----------       ---------
          Total current liabilities                 18,373           (8,180)           (3,249)           6,944
Other liabilities                                      711               --                --              711
                                                 ---------        ----------        ----------       ---------
          Total liabilities                         19,084           (8,180)           (3,249)           7,655
Stockholders' equity                                 9,131               --            (1,791) (2)       7,340
                                                 ---------        ----------        ----------       ---------
                                                 $  28,215        $  (8,180)        $  (5,040)       $  14,995
                                                 =========        ==========        ==========       =========

</TABLE>


(1)      Represents reduction of notes payable using the $3.6 million estimated 
         sale proceeds, less sale related expenses. 
(2)      Represents the loss on sale of the ISIL Distribution Business.





                                     F-5

<PAGE>   9
                               INDEX TO EXHIBITS

EXHIBIT NO.                  DESCRIPTION
- -----------                  -----------

   2.1          Purchase Agreement dated as of May 13, 1998 by and among
                Fayrewood plc, Doctor Buylines Limited, Interface
                Systems International Limited and Interface Systems, Inc.

   2.2          Deed of Variation dated as of May 19, 1998 by and among
                Fayrewood plc, Doctor Buylines Limited, Interface
                Systems International Limited and Interface Systems, Inc.

   2.3          Deed of Release dated as of May 13, 1998 by and among The First
                National Bank of Chicago, Interface Systems
                International Limited and Interface Systems, Inc.

<PAGE>   1
                                                                    EXHIBIT 2.1


                                Dated 13 May 1998






                                  FAYREWOOD PLC

                                     - and -

                             DOCTOR BUYLINES LIMITED

                                     - and -

                     INTERFACE SYSTEMS INTERNATIONAL LIMITED

                                     - and -

                             INTERFACE SYSTEMS, INC.




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

                                   ACQUISITION

                      of the business of Interface Systems
                              International Limited

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






                              ASHURST MORRIS CRISP
                                 Broadwalk House
                                 5 Appold Street
                                 London EC2A 2HA

                               Tel: 0171-638 1111
                               Fax: 0171-972 7990

                                  CJA/I33100018



<PAGE>   2

                                    CONTENTS

CLAUSE                                                                 PAGE

1.     INTERPRETATION.....................................................1
2.     SALE AND PURCHASE..................................................6
3.     CONSIDERATION......................................................6
4.     COMPLETION.........................................................8
5.     PROPERTIES.........................................................8
6.     LIABILITIES AND EXCLUDED LIABILITIES...............................9
7.     DEBTORS............................................................9
8.     CONTRACTS.........................................................10
9.     EMPLOYEES.........................................................10
10.    FUTURE TRADING AND TRADE ENQUIRIES................................11
11.    VALUE ADDED TAX...................................................11
12.    WARRANTIES........................................................12
13.    ANNOUNCEMENTS, ETC................................................15
14.    COSTS.............................................................15
15.    ASSIGNMENT........................................................16
16.    ENTIRE AGREEMENT..................................................16
17.    WAIVER, AMENDMENT.................................................16
18.    FURTHER ASSURANCE.................................................16
19.    FAYREWOOD PLC.....................................................16
20.    INTERFACE INC.....................................................17
21.    PURCHASER'S UNDERTAKING...........................................18
22.    ACCESS............................................................18
23.    NOTICES...........................................................18
24.    COUNTERPARTS......................................................19
25.    GOVERNING LAW AND SUBMISSION TO JURISDICTION......................19
26.    INVALIDITY........................................................19
27.    CONFIDENTIALITY...................................................19
SCHEDULE 1...............................................................20
SCHEDULE 2...............................................................21
SCHEDULE 3...............................................................27



<PAGE>   3

THIS AGREEMENT is made on 13 May 1998

BETWEEN:-

(1)    FAYREWOOD PLC (No 03057247) whose registered office is at 1 Pemberton
       Row, Fetter Lane, London EC4A 3BA ("FAYREWOOD");

(2)    DOCTOR BUYLINES LIMITED (No 3360868) whose registered office is at 1
       Pemberton Row, Fetter Lane, London EC4A 3BA (the "PURCHASER");

(3)    INTERFACE SYSTEMS INTERNATIONAL LIMITED (No 2100227) whose registered
       office is at 959 Weston Road, Slough Trading Estate, Slough, Berkshire,
       SL1 4HR (the "VENDOR"); and

(4)    INTERFACE SYSTEMS, INC. whose place of business is at 5855 Interface
       Drive, Ann Arbor, Michigan 48103, USA ("INTERFACE INC.").


RECITALS

(A)    The Vendor carries on the Business (as hereinafter defined) and is the
       beneficial owner, or is otherwise able to procure the transfer, of the
       Assets (as hereinafter defined).

(B)    The Vendor has agreed to sell, and the Purchaser has agreed to purchase,
       the Business as a going concern and the Assets on the terms hereinafter
       set out.

(C)    Interface Inc. has agreed to enter into this agreement to guarantee the
       obligations of the Vendor.

(D)    Fayrewood has agreed to enter into this agreement to guarantee the
       obligations of the Purchaser.

THE PARTIES AGREE AS FOLLOWS:-

1.     INTERPRETATION

1.1    The following words and expressions shall, unless the context otherwise
       requires, have the following meanings:-

       "ACCOUNTS" means the audited financial statements (comprising a balance
       sheet, profit and loss account, statement of source and application of
       funds, notes and directors' report and auditors' certificates) of the
       Vendor for the financial period ended on the Accounts Date;

       "ACCOUNTS DATE" means 30 September 1996;

       "AGREED FORM" means, in relation to a document, in the form agreed
       between the parties on or prior to the date hereof and for the purposes
       of identification signed on their behalf;

       "ASSETS" means the Goodwill, Books and Records, Contracts, Debtors,
       Intellectual Property, Fixed Plant, Loose Plant, Properties and Stock,
       together with all other assets and rights and



                                      -1-
<PAGE>   4


       the benefit of any claims directly and exclusively relating to the
       Business excluding the Excluded Assets;

       "ASSUMED EMPLOYEES" means those employees engaged in the Business as at
       Completion based at the Birmingham location and the Slough Property;

       "BOOKS AND RECORDS" means the lists of customers and suppliers, books of
       account, financial records, and all other records exclusively relating to
       the Business;

       "BUSINESS" means the business of wholesale IT product distribution and
       servicing, including personal computers, PC supplier and consumables as
       well as spare parts and related products carried on at the date hereof by
       the Vendor and wheresoever carried on;

       "COMPLETION" means the completion of the sale and purchase of the
       Business and Assets in accordance with clause 4;

       "CALCULATION DATE" means 12 May 1998;

       "COMPLETION DATE" means the date hereof;

       "CONSIDERATION" means the consideration for the Business and Assets as
       specified or determined in accordance with clause 3;

       "CONTRACTS" means all contracts and arrangements which are wholly or
       partly unperformed or ongoing at the Completion Date relating to the
       Business;

       "DEBTORS" means all those amounts owed to the Vendor directly and
       exclusively in connection with the Business as at the Completion Date;

       "DISCLOSURE LETTER" means the letter of today's date together with the
       attachments thereto addressed by the Vendor's Solicitors to the
       Purchaser's Solicitors disclosing exceptions to the Warranties;

       "ENCUMBRANCE" means any mortgage, charge, pledge, lien, security or other
       third party right or interest (legal or equitable) or restriction over or
       in respect of the use of any relevant asset, security or right;

       "ESCROW ACCOUNT" means the account in the joint names of the Vendor's
       Solicitors and the Purchaser's Solicitors which shall hold the Escrow
       Amount;

       "ESCROW AMOUNT" means (pound)500,000 (five hundred thousand pounds);

       "EXCLUDED ASSETS" means any assets or rights and the benefit of any
       claims as at the Completion Date consisting of or comprised in the
       following:-

       (a)    fixture and fittings at the Slough Property;

       (b)    leasehold improvements at the Slough Property;


                                      -2-
<PAGE>   5

       (c)    the lease of the Slough Property;

       (d)    all sums due from Interface Inc. to the Vendor;

       (e)    cash in hand or at banks;

       (f)    Any credits on the Debtor ledger which were outstanding since
              prior to 1 March 1998 and any Debtors (net of relevant credits
              relating to that particular Debtor) which have been outstanding
              since prior to 1 March 1998;

       (g)    all rights arising under the Intra-Group Agreement;

       (h)    all rights arising in respect of the dealings by the Vendor with
              Al Mulhoff;

       (i)    any asset which does not relate to the Business; and

       (j)    any refund or asset in respect of Taxation.

       "EXCLUDED LIABILITIES" means the following liabilities of the Business at
       the Completion Date:-

       (a)    all sums due from the Vendor to Interface Inc.;

       (b)    any liability due in respect of any period in respect of the
              Slough Property;

       (c)    liabilities of the Vendor to Taxation (excluding liabilities to
              PAYE and VAT in respect of the period after the Calculation Date);

       (d)    amounts owed to any third party by way of overdrafts, loans or
              other borrowings;

       (e)    all obligations arising under the Intra-Group Agreement;

       (f)    all liabilities which have not been provided for in the Net Asset
              Value Statement save for those arising after the Calculation Date;

       (g)    any liabilities in respect of litigation arising out of any matter
              on or before Completion;

       (h)    all liabilities to Al Mulhoff;

       (i)    "goods received not invoiced" accrued for stock received prior to
              31 December 1997;

       (j)    any supplier credits on the payables ledger which have been
              outstanding since prior to 1 January 1998 and payables which have
              been outstanding since prior to 1 January 1998; and

       (k)    any liabilities which do not relate to the Business.


                                      -3-
<PAGE>   6

       "FIXED PLANT" means the fixed plant, machinery, equipment and tooling
       used or intended for use directly and exclusively in the Business
       attached or fixed to the Properties and at the Slough Property to the
       extent not Excluded Assets;

       "GOODWILL" means the goodwill relating to the Business together with the
       exclusive right for the Purchaser to represent itself as carrying on the
       Business in succession to the Vendor;

       "HOLDING COMPANY" has the meaning given to it in section 736 Companies
       Act 1985;

       "INITIAL CONSIDERATION" has the meaning set out in clause 3.2 below;

       "INTELLECTUAL PROPERTY" means the registered intellectual property
       together with:-

       (a)    all know-how directly and exclusively connected with the Business;

       (b)    all copyright, moral rights, design rights, unregistered trade
              marks, logos, drawings, designs and all other intellectual
              property rights directly and exclusively relating to the Business

       and all rights of the Vendor against third parties in respect of any of
       the foregoing;

       "INTRA-GROUP AGREEMENT" means the agreement dated 30 December 1997
       between the Vendor and Interface Inc. providing for the sale of the
       business of the Vendor of selling and marketing connecting and document
       management software and IBM plug compatible printer hardware as well as
       the related assets as of 30 June 1997, being the document in the Agreed
       Form;

       "LEASED ASSETS" means those of the Assets which are subject to lease,
       hire, hire-purchase and other such agreements;

       "LIABILITIES" means all liabilities of the Business but excluding the
       Excluded Liabilities;

       "LOOSE PLANT" means the moveable plant, machinery, equipment, tooling and
       vehicles used or intended for use directly and exclusively in the
       Business;

       "NET ASSET VALUE" means the sum derived by subtracting the amount
       attributable to the Liabilities as at the Calculation Date from the
       amount attributable to the Assets at the Calculation Date, each as shown
       in the Net Asset Value Statement as at the Calculation Date;

       "NET ASSET VALUE STATEMENT" means the statement of net assets or, as the
       context may require, the draft thereof, to be produced and confirmed in
       accordance with clause 3 showing the Net Asset Value as at the
       Calculation Date;

       "PROPERTIES" means the properties brief particulars of which are set out
       in schedule 3;

       "PURCHASER'S ACCOUNTANTS" means Ernst & Young, 7 Roll Buildings, Fetter
       Lane, London EC4A 1N13;


                                      -4-
<PAGE>   7

       "PURCHASER'S GROUP" means the Purchaser, its ultimate holding company and
       any subsidiary of such holding company;

       "PURCHASER'S SOLICITORS" means Matheson Ormsby Prentice of 1 Pemberton
       Row, Fetter Lane, London EC4A 3BA;

       "REGULATIONS" means the Transfer of Undertakings (Protection of
       Employment) Regulations 1981;

       "SLOUGH PROPERTY" means the lease of property of the Vendor at 959 Weston
       Road, Slough, Berkshire and for the avoidance of doubt the telephone
       system is part of the Slough Property;

       "STOCK" means the stock in trade, raw materials, packing materials, work
       in progress and finished goods acquired or produced in the course of the
       Business at the Properties or elsewhere;

       "SUBSIDIARY" has the meaning given to it in section 736 Companies Act
       1985;

       "TAXATION" means any tax and any duty, impost, levy or governmental
       charge in the nature of tax whether domestic or foreign and any fine,
       penalty or interest connected therewith (including Customs Duties and
       Value Added Tax) but excluding any stamp duty or stamp duty reserve tax
       payable on this agreement or any instrument executed pursuant to this
       agreement or any assignment relating to this agreement;

       "TRADE PAYABLES" means those of the Liabilities, as described in the Net
       Asset Value Statement;

       "VENDOR'S ACCOUNTANTS" means Arthur Andersen, 20 Old Bailey, London EC4M
       7AN;

       "VENDOR'S GROUP" means the Vendor, its ultimate holding company and any
       subsidiary of such holding company;

       "VENDOR'S SOLICITORS" means Ashurst Morris Crisp, Broadwalk House, 5
       Appold Street, London, EC2A 2HA;

       "WARRANTIES" means the warranties given pursuant to clause 14 and
       schedule 2.

1.2    The words and expressions defined in schedule 2 shall have the meanings
       set out therein.

1.3    References to the parties hereto include and in the case of individuals
       their respective successors in title, personal representatives, heirs and
       estates and references to the masculine gender shall include the feminine
       and vice versa.

1.4    References to statutes or statutory provisions include references to any
       orders or regulations made thereunder and references to any statute,
       provision, order or regulation include references to that statute,
       provision, order or regulation as re-enacted from time to time before the
       date hereof (subject as otherwise expressly provided herein) and to any
       previous statute, statutory provision, order or regulation amended,
       modified, re-enacted or replaced by such statute, provision, order or
       regulation before the date hereof.


                                      -5-
<PAGE>   8

1.5    References to persons shall include bodies corporate and unincorporated,
       associations, partnerships and individuals.

1.6    Headings to clauses, sub-clauses and paragraphs are for information only
       and shall not form part of the operative provisions of this agreement and
       shall be ignored in construing the same.

1.7    References to recitals, clauses or schedules are to recitals to, clauses
       of and schedules to this agreement.

1.8    The recitals, the schedules and documents in the Agreed Form form part of
       the operative provisions of this agreement and references to this
       agreement shall, unless otherwise expressly stated, include references to
       the recitals, the schedules and documents in the Agreed Form.

1.9    Time shall be of the essence for all payments under this agreement.

2.     SALE AND PURCHASE

2.1    Subject to the terms and conditions of this agreement and so that the
       Vendor shall sell and the Purchaser shall purchase with effect from the
       Completion Date and the Vendor shall sell with full title guarantee (save
       in the case of the Leased Assets in respect of which the Vendor shall
       sell with whatever right title and interest it has in such Assets) and
       the Purchaser shall purchase free from all Encumbrances the Assets and
       the Business as a going concern with effect from the commencement of
       business on the Completion Date and together with all accrued benefits
       and rights attaching thereto.

2.2    The Excluded Assets and the Excluded Liabilities are not included in the
       sale and purchase pursuant to clause 2.1.

2.3    The consideration for such sale and purchase shall be as specified in
       clause 3.

3.     CONSIDERATION

3.1    The Consideration shall be a sum equivalent to 80% of the Net Asset Value
       as specified in the Net Asset Value Statement, plus (pound)75,000
       provided that if any adjustments upwards to the Consideration shall
       result in the Consideration being more than (pound)2,750,000, then the
       Purchaser shall pay only (pound)2,750,000 and the Vendor shall retain
       further receivables (taking receivables in order of the oldest
       receivables first) to those in the Excluded Assets to the extent the
       Consideration would otherwise have exceeded (pound)2,750,000.

3.2    (pound)2,400,000 (less the Escrow Amount) (the "INITIAL CONSIDERATION")
       shall be paid on Completion on account of the Consideration and the
       Escrow Amount shall be paid into the Escrow Account.

3.3    As soon as practicable and in any event within forty five days of the
       Completion Date the Vendor shall procure, using the Vendor's Accountants
       for this purpose, that the Net Asset Value Statement is prepared on a
       basis consistent with the accounting principles and policies on which the
       Accounts have been prepared or would have been prepared using the same
       basis


                                      -6-
<PAGE>   9


       for provisions on debts and valuation of stock (save that any Debtors
       (net of the relevant credit notes) which have been outstanding since
       prior to 1 March 1998 are excluded from the purchase as are payables
       which have been outstanding since prior to 1 January) as were used for
       the preparation of the Accounts.

3.4    When the Net Asset Value Statement shall have been prepared the Vendor
       shall deliver a copy thereof to the Purchaser's Accountants for review.
       The Purchaser's Accountants shall be entitled to examine all the accounts
       and working papers relating to the Net Asset Value Statement or otherwise
       reasonably required for the purposes of such review and discuss the sums
       with the Vendor's Accountant.

3.5    Within fifteen working days after the Vendor has delivered the Net Asset
       Value Statement pursuant to clause 3.4 the parties shall procure that the
       Vendor's Accountants and the Purchaser's Accountants meet to review and
       examine the Net Asset Value Statement to satisfy themselves that it has
       been duly prepared in accordance with this agreement and that the Net
       Asset Value has been correctly derived therefrom. The Vendor's
       Accountants and the Purchaser's Accountants shall then either:-

       (a)    confirm in writing to the parties that the Net Asset Value
              Statement has been so prepared and the Net Asset Value correctly
              derived; and/or

       (b)    give notice in writing to the parties detailing why they are
              unable so to confirm.

       If the Vendor's Accountants or the Purchaser's Accountants fail so to
       confirm or fail to give such notice as aforesaid within the said fifteen
       working days the Net Asset Value Statement and the Net Asset Value shall
       be conclusively deemed to have been accepted and confirmed by the Vendor
       and the Purchaser.

3.6    If the Vendor's Accountants or the Purchaser's Accountants have given
       notice in accordance with clause 3.5(b) the parties will endeavour to
       resolve all matters in dispute as soon as practicable. In the event of
       their failing to resolve such matters within ten working days of the
       giving of such notice by the Vendor's Accountants and the Purchaser's
       Accountants, either party may refer any dispute for resolution to an
       independent chartered accountant appointed by the Vendor and the
       Purchaser or, in default of agreement on such appointment within three
       working days, on the application of either party by the President for the
       time being of the Institute of Chartered Accountants in England and
       Wales. In making such determination such accountant shall act as an
       expert and not as an arbitrator and his decision shall (in the absence of
       manifest error) be final and binding on the parties hereto. The costs of
       such accountant shall be borne by the parties in the proportions he may
       direct or, in the absence of direction, equally.

3.7    Within 3 working days of the Net Asset Value Statement being confirmed or
       deemed to have been confirmed in accordance with Clause 3.5 or being
       determined in accordance with Clause 3.6, an adjusting payment to the
       Initial Consideration should be made to reflect the final Consideration
       by either the Purchaser or the Vendor, as the case may be. Such payment
       will be calculated on the basis of the Net Asset Value Statement,
       together in each case with interest flowing on such amount due at a rate
       equal to Lloyds Bank plc base rate for the time being in force on such
       matter accruing on a daily basis from the Completion Date to the date of
       payment.


                                      -7-
<PAGE>   10

3.8    The Vendor and the Purchaser shall procure the Escrow Account shall be
       opened in the names of the Vendor's Solicitors and the Purchaser's
       Solicitors into which the Escrow Amount shall be paid which shall be
       retained in the Escrow Account being on deposit in such manner as the
       parties agree until final settlement of the Consideration in accordance
       with clause 3.7 when such payment will be made out of the Escrow Account
       to the extent that the Purchaser is entitled to receive payment by way
       reduction in the overall consideration together with interest thereon and
       any sums remaining shall be paid to the Vendor together with interest
       thereon, the Vendor's Solicitors and the Purchaser's Solicitors being
       instructed accordingly by the Vendor and the Purchaser.

4.     COMPLETION

4.1    Completion shall take place at the offices of the Vendor's Solicitors on
       the Completion Date or at such other place or time as the Vendor and the
       Purchaser shall agree in writing.

4.2    On Completion the Vendor shall deliver or, in the case of clauses 4.2(a)
       and 4.2(b) make available to the Purchaser:-

       (a)    the Books and Records;

       (b)    list of all Debtors and a list of all creditors as at the close of
              business on the business day immediately preceding the Calculation
              Date;

       (c)    at the Properties the Loose Plant and all other Assets hereby
              agreed to be sold title to which can be transferred by delivery
              and shall permit the Purchaser to enter into and take possession
              of the Assets;

       (d)    releases under seal or confirmation of releases of any
              Encumbrances to which any of the Assets are subject duly executed
              by those entitled to the benefit thereof;

4.3    The Purchaser shall deliver to the Vendor's Solicitors a banker's draft
       drawn on a town clearing bank for immediately available funds or
       telegraphic transfer in favour of the Vendor's Solicitors for an amount
       equivalent to the Initial Consideration and the receipt of the Vendor's
       Solicitors therefor shall be a good discharge to the Purchaser.

4.4    Save as otherwise agreed in writing by the parties, at Completion the
       Purchaser shall procure that Interface Inc. and each of its subsidiaries,
       will be released from any guarantee, indemnity, bond, letter of comfort,
       or encumbrance or similar obligation given or incurred in relation to or
       which relates to the Liabilities (other than the Excluded Liabilities)
       and shall in the meantime indemnify the Vendor, Interface Inc. and each
       of its subsidiaries against any liability in relation thereto.

5.     PROPERTIES

5.1    The provisions of schedule 3 shall apply in relation to the Properties.

5.2    In respect of the Slough Property the Purchaser shall procure that any
       rent and rates due are paid to the Vendor on such property from the
       Calculation Date until the part of the Slough


                                      -8-
<PAGE>   11

       Property used by the business is vacated by the Purchaser within 30 days
       of completion and otherwise the provision of Schedule 3 shall not apply
       to the Slough Property.

5.3    Within three working days of the Completion Date the Vendor and the
       Purchaser shall agree to appoint an independent surveyor (the "SURVEYOR")
       and in default of agreement on such appointment within three working days
       from the Completion Date, the Surveyor shall be appointed on the
       application of either party by the President of the Royal Institution of
       Chartered Surveyors, and the Surveyor shall be instructed to review the
       Properties to determine what, if any, repairs are required at the
       Properties in order to bring the Properties up to a standard of repair
       sufficient only to satisfy the Tenant's repairing obligations contained
       in the relevant leases. In making such determination the Surveyor shall
       act as an expert and not as an arbitrator and his decision shall be final
       and binding upon the Vendor and the Purchaser. The whole cost of the
       Surveyor's determination shall be borne by the Purchaser. To the extent
       that the Surveyor determines that repairs are required to the Properties
       in accordance with this clause, he shall estimate the cost of such
       repairs (the "ESTIMATE") and the Vendor shall pay to the Purchaser (upon
       receipt by the Vendor of satisfactory evidence of the Purchaser's payment
       for the repairs) the costs of such repairs in excess of (pound)50,000. To
       the extent that the Estimate exceeds (pound)50,000, such excess shall be
       reserved in the Escrow Account for payment to the Purchaser pursuant to
       this clause and when a receipted bill is produced, such sum will be
       released from the Escrow Account to the Purchaser, Provided That the
       Vendor shall only be liable to the extent of receipted bills showing such
       repairs have been carried out and only to the extent that such repairs
       are completed within six months from the Completion Date.

6.     LIABILITIES AND EXCLUDED LIABILITIES

6.1    The Purchaser shall:-

       (a)    with effect from the Completion Date assume liability for and
              indemnify the Vendor against the Liabilities and any and all
              obligations, liabilities, costs, claims, demands and expenses
              arising therefrom;

       (b)    (save as otherwise agreed in writing by the parties) procure the
              substitution of any securities or guarantees given in respect of
              the Liabilities by any member of the Vendor's Group;

       (c)    pay, satisfy and discharge all debts, liabilities and obligations
              incurred by the Vendor or the Purchaser in connection with the
              Business after the Completion Date.

6.2    The Vendor shall pay satisfy and discharge the Excluded Liabilities and
       with effect from the Completion Date indemnify the Purchaser in respect
       thereof and against any and all obligations, debts, costs, claims,
       demands and expenses arising therefrom.

7.     DEBTORS

7.1    At any time on or after Completion as and when required by the Purchaser,
       the Vendor shall deliver to the Purchaser the assignments of such of the
       Debtors as the Purchaser may specify in such form as the Purchaser shall
       require.


                                      -9-
<PAGE>   12

7.2    Notwithstanding clause 7.1 the Vendor undertakes to hold on trust in a
       separate bank account in England and Wales for the benefit of the
       Purchaser any Debtors included in the Assets received by it and to pay
       the same to the Purchaser forthwith on receipt.

8.     CONTRACTS

8.1    If any of the Contracts cannot be transferred to the Purchaser without
       the consent of a third party then the Vendor shall use all reasonable
       endeavours to obtain such consent.

8.2    In any case where the consent in clause 8.1 above is refused or otherwise
       not obtained and until it is obtained or where any of the Contracts are
       incapable of transfer by assignment or by other means to the Purchaser:-

       (a)    the Vendor shall hold the Contracts and any monies, goods or other
              benefits received thereunder as agent of and trustee for the
              Purchaser and shall forthwith upon receipt of the same account for
              and pay or deliver to the Purchaser such monies, goods and other
              benefits;

       (b)    the Purchaser shall perform the Contracts in accordance with their
              terms and conditions as sub-contractor to the Vendor provided that
              sub-contracting is permissible under the terms of the Contract in
              question, and where sub-contracting is not permissible, the
              Purchaser shall perform the Contracts in accordance with their
              terms and conditions as agent for the Vendor and indemnify and
              keep indemnified the Vendor against all costs, claims and damages
              in respect thereof; and

       (c)    the Vendor shall give all reasonable assistance to the Purchaser
              at the cost of the Purchaser to enable it to enforce the rights of
              the Vendor under the Contracts and shall at all times act with
              regard to the Contracts in accordance with the Purchaser's
              reasonable instructions from time to time.

9.     EMPLOYEES

9.1    The Vendor shall use its reasonable endeavours to retain the services of
       the Assumed Employees to the intent that their contracts of employment
       shall continue in force until Completion and then be transferred to the
       Purchaser under the Regulations and shall comply with all its obligations
       under the said contracts of employment, under statute and under any
       agreement with any trade union in relation to the Business.

9.2    Save in respect of any failure by the Vendor to comply with its
       obligations under the Transfer of Undertakings (Protection of Employment)
       Regulations 1981 in connection with the sale of the Business hereunder,
       the Purchaser shall discharge and hereby undertakes to indemnify the
       Vendor against all liabilities, obligations, costs, claims and demands
       arising from or in respect of any of the Assumed Employees after
       Completion.

9.3    If the Purchaser shall so determine and shall serve notice on the Vendor
       within 7 days after the Completion Date, such notice having been signed
       by Debbie Pegler, specifying the Assumed Employees that the Purchaser has
       determined to make redundant, the Vendor shall indemnify the Purchaser
       against redundancy payments and other contractual termination


                                      -10-
<PAGE>   13

       payments, together with the costs of terminating any car lease in
       relation to such employee to such Assumed Employees up to a maximum
       aggregate payment of (pound)100,000.

10.    FUTURE TRADING AND TRADE ENQUIRIES

       The Vendor shall promptly refer to the Purchaser all enquiries relating
       to the Business and assign to the Purchaser all orders directly and/or
       exclusively relating to the Business.

11.    VALUE ADDED TAX

11.1   All amounts expressed in this agreement as being payable by any party
       hereto are expressed exclusive of any value added tax which may be
       chargeable thereon and the amount of any such value added tax shall be
       payable in addition thereto subject as hereinafter provided.

11.2   The Vendor and the Purchaser shall use all reasonable endeavours to
       secure that the conditions of article 5(1) of the Value Added Tax
       (Special Provisions) Order 1995 SI 1268 and of section 49 of the Value
       Added Tax Act 1994 are fulfilled so that the sale of the Business and
       Assets hereunder is properly treated as neither a supply of goods nor a
       supply of services for the purposes of value added tax.

11.3   The Vendor and the Purchaser shall each give notice of the transfer to
       H.M. Customs and Excise.

11.4   The Vendor shall on the Completion Date deliver to the Purchaser all
       records referred to in section 49(1) of the Value Added Tax Act 1994 and
       shall not make any request to H.M. Customs and Excise for such records to
       be retained by the Vendor and the Purchaser hereby undertakes to preserve
       such records for such periods as may be required by law and shall during
       that period afford reasonable access to them at the request of the
       Vendor.

11.5   In the event H.M. Customs and Excise determine that value added tax is
       chargeable on the sale of the Business and Assets hereunder or any of
       them then the Vendor shall immediately notify the Purchaser of such
       determination and the Purchaser agrees that such value added tax shall be
       in addition to the sum specified in clause 3 and the Purchaser shall
       (against production by the Vendor of tax invoices in respect thereof) pay
       the amount of any such value added tax forthwith to the Vendor but such
       payment shall be without prejudice to the right of the Purchaser under
       this agreement to call upon the Vendor to make or join an Appeal against
       the aforesaid determination.

11.6   All value added tax payable in respect of goods and services supplied or
       deemed to be supplied by the Vendor in connection with the Business prior
       to Completion, and all interest payable thereon and penalties
       attributable thereto, shall be paid to H.M. Customs and Excise by the
       Vendor, and the Vendor shall be entitled to receive and to retain for its
       own benefit all reimbursement or credit from H.M. Customs and Excise for
       value added tax borne by the Vendor on goods and services supplied to the
       Vendor prior to Completion and any payments received in respect of value
       added tax overpaid to H.M. Customs and Excise prior thereto.


                                      -11-
<PAGE>   14

12.    WARRANTIES

12.1   The Vendor warrants to the Purchaser in the terms of the Warranties and
       so that the remedies of the Purchaser in respect of any breach of any of
       the Warranties shall continue to subsist notwithstanding completion of
       the sale and purchase hereunder.

12.2   Save in the case of any fraudulent misrepresentation, the Purchaser
       agrees that the Purchaser will have no remedy against the Vendor, and the
       Vendor shall have no liability of whatsoever nature to the Purchaser, in
       respect of any statement of fact or opinion whatsoever, including any
       untrue or misleading statement, warranty or representation, express or
       implied, made to the Purchaser or its agents, officers or employees upon
       which the Purchaser relied or may have relied in entering into this
       agreement and that the Purchaser's sole remedy (save in the case of any
       fraudulent misrepresentation) is for breach of contract in respect of the
       Warranties, undertakings, covenants or indemnities expressly set out in
       this agreement subject to the limitations contained in this agreement.

12.3   Each of the Warranties shall be construed as a separate Warranty and
       (save as expressly provided to the contrary) shall not be limited by the
       terms of any of the other Warranties.

12.4   Save in the case of fraud or wilful non-disclosure by the Vendor, the
       Vendor shall be under no liability in respect of any claim under the
       Warranties and any such claim shall be wholly barred and unenforceable
       unless written notice of such claim setting out full details of the
       relevant claim (including the grounds on which such claim is based and
       the amount claimed to be payable in respect thereof) shall have been
       served upon the Vendor by the Purchaser by not later than 5.00 p.m. up to
       twelve months after the Completion Date and either:-

       (a)    the amount payable in respect of the relevant claim has been
              agreed by the Vendor within 3 months of the date of such written
              notice; or

       (b)    legal proceedings have been instituted in respect of such claim by
              the due service of process on the Vendor within 3 months of the
              later of:-

              (i)    the date of such written notice; and

              (ii)   in the event that the Vendor shall make a request pursuant
                     to clause 12.10(b)(i) in respect thereof the date on which
                     judgment is given by a court of competent jurisdiction or
                     the date settlement is reached (with the consent of the
                     Vendor) in respect of such proceedings or the date on which
                     the Vendor and the Purchaser agree that proceedings or
                     other action against the third party shall be abandoned.

12.5   Save in the case of fraud or wilful non-disclosure the Vendor shall be
       under no liability in respect of any claim under the Warranties:-

       (a)    where the liability of the Vendor in respect of that claim would
              (but for this paragraph) have been less than (pound)30,000; or

       (b)    unless and until and only to the extent that the liability in
              respect of that claim (not being a claim for which liability is
              excluded under clause 12.5(a) above) when 


                                      -12-
<PAGE>   15

              aggregated with the liability of the Vendor in respect of all
              other claims shall exceed (pound)100,000.

12.6   Save in the case of fraud or wilful non-disclosure the aggregate
       liability of the Vendor in respect of all such claims under this
       agreement shall not in any circumstances exceed (pound)500,000.

12.7   The Vendor shall be under no liability in respect of any claim under the
       Warranties if the facts or circumstances giving rise thereto are clearly
       disclosed or referred to in the Disclosure Letter or provided for or
       stated to be exceptions under the terms of this agreement.

12.8   No liability (whether in contract, tort or otherwise) shall attach to the
       Vendor in respect of any claim under the Warranties to the extent that:-

       (a)    the claim or the events giving rise to the claim would not have
              arisen but for an act, omission or transaction of the Purchaser's
              Group otherwise than in the ordinary and proper course of the
              Business as at present carried on or which would not have arisen
              but for any claim, election or surrender or disclaimer made or
              omitted to be made or notice or consent given or omitted to be
              given by the Purchaser's Group under the provisions of any
              statutes relating to taxation;

       (b)    the claim is based upon a liability which is contingent only,
              unless and until such contingent liability becomes an actual
              liability or until the same is finally adjudicated;

       (c)    provision or reserve in respect of the matter giving rise to the
              claim shall have been made in the Net Asset Value Statement or to
              the extent that the matter giving rise to the claim shall have
              been noted in the Net Asset Value Statement;

       (d)    the claim occurs wholly or partly out of or the amount thereof is
              increased as a result of:-

              (i)    any change in the accounting principles or practices of the
                     Purchaser's Group introduced or having effect after the
                     date of this agreement; or

              (ii)   any increase in the rates of taxation made after the date
                     hereof; or

              (iii)  any change in law or regulation or in its interpretation or
                     administration by the English courts, by the Inland Revenue
                     or by any other fiscal, monetary or regulatory authority
                     (whether or not having the force of law);

       (e)    the loss or damage giving rise to the claim is recoverable by the
              Purchaser's Group under any policy of insurance or would have been
              so recoverable but for any change in the terms of insurance since
              the date of this agreement.

12.9   No liability will arise and no claim may be made under any of the
       Warranties to the extent that the matter giving rise to such claim is
       remediable unless within the period of 60 days following the Purchaser
       becoming aware of such matter the Purchaser shall have given written
       notice thereof to the Vendor and such matter shall not have been remedied
       to the 


                                      -13-
<PAGE>   16

       reasonable satisfaction of the Purchaser within the period of 60 days
       following the date of service of such notice.

12.10  (a)    This clause shall apply in circumstances where:-

              (i)    any claim is made against the Purchaser's Group which may
                     give rise to a claim by the Purchaser against the Vendor
                     under the Warranties; or

              (ii)   the Purchaser's Group is or may be entitled to make
                     recovery from some other person of any sum in respect of
                     any facts or circumstances by reference to which the
                     Purchaser has or may have a claim against the Vendor under
                     the Warranties; or

              (iii)  the Vendor shall have paid to the Purchaser an amount in
                     respect of a claim under the Warranties and subsequent to
                     the making of such payment the Purchaser's Group becomes or
                     shall become entitled to recover from some other person a
                     sum which is referable to that payment.

       (b)    The Purchaser shall and shall procure that:-

              (i)    (prior to taking any action against the Vendor under the
                     Warranties in the case of clause 12.10(a)(i) and clause
                     12.10(a)(ii) and subject to the Purchaser being indemnified
                     to the reasonable satisfaction of the Purchaser by the
                     Vendor against all reasonable costs and expenses which may
                     properly be incurred by reason of such action) promptly and
                     diligently take all such action as the Vendor may
                     reasonably request (including the institution of
                     proceedings and the instruction of professional advisers
                     approved by the Vendor to act on behalf of the Purchaser to
                     avoid, dispute, resist, compromise, defend or appeal
                     against any such claim against the Purchaser's Group as is
                     referred to in clause 12.10(a)(i) or to make such recovery
                     by the Purchaser's Group as is referred to in clause
                     12.10(a)(ii) or clause 12.10(a)(iii), as the case may be;
                     and

              (ii)   not settle or compromise any liability or claim to which
                     such action is referable without the prior written consent
                     of the Vendor which consent shall not be unreasonably
                     withheld or delayed; and

              (iii)  in the case of clause 12.10(a)(iii) only, promptly repay to
                     the Vendor an amount equal to the amount so recovered or,
                     if lower, the amount paid by the Vendor to the Purchaser.

12.11  The Purchaser shall promptly:-

       (a)    inform the Vendor in writing of any fact, matter, event or
              circumstance which comes to its notice or to the notice of the
              Purchaser's Group whereby it appears that the Vendor is or may be
              liable to make any payment in respect of any claim under the
              Warranties or whereby it appears the Purchaser's Group shall
              become or may become entitled to recover from some other person a
              sum which is referable to a payment already made by the Vendor in
              respect of such a claim; and


                                      -14-
<PAGE>   17

       (b)    thereafter keep the Vendor fully informed of all developments in
              relation thereto; and

       (c)    provide all such information and documentation (no matter how it
              is recorded or stored) as the Vendor shall reasonably request in
              connection therewith and also in connection with any proceedings
              instituted by or against the Purchaser's Group under clause 12.10.

       provided that the Vendor shall keep such information and documentation 
       confidential.

12.12  The Warranties shall remain in full force and effect after Completion but
       (save in the case of any fraudulent misrepresentation or wilful
       non-disclosure) the Purchaser shall have no right to rescind or terminate
       this agreement after Completion for breach of any of the Warranties or
       under the provisions of the Misrepresentation Act 1967 or for any other
       reason whatsoever and the Purchaser's sole remedy (save as aforesaid) in
       respect of a claim under the Warranties or otherwise shall be against the
       Vendor in damages subject to the limitations contained in this agreement.

12.13  In the event that the Vendor at any time after the date hereof shall wish
       to take out insurance against its liability hereunder the Purchaser
       undertakes to provide such information as the prospective insurer may
       reasonably require before effecting such insurance provided that the
       Purchaser can do so without breaching any of its legal obligations to
       third parties.

12.14  The Purchaser confirms that it has no knowledge at the date hereof of any
       facts which it currently believes (acting reasonably) may lead to claims
       against the Vendor under the Warranties.

12.15  The Purchaser's Group will take or procure the taking of all such steps
       and action as are necessary or as the Vendor may reasonably require in
       order to mitigate any claim under the Warranties and the Purchaser's
       Group shall act in accordance with such request. Nothing in this
       agreement shall or shall be deemed to relieve the Purchaser of any common
       law or other duty to mitigate any loss or damage incurred by it.

13.    ANNOUNCEMENTS, ETC.

       Neither the making of this agreement nor its terms shall be disclosed by
       any party hereto without the prior consent of the other parties unless
       disclosure is required by law or by any Stock Exchange or any regulatory
       authority.

14.    COSTS

14.1   Save as expressly otherwise provided in this agreement each of the
       parties hereto shall bear its own legal, accountancy and other costs,
       charges and expenses connected with the negotiation, preparation and
       implementation of this agreement and any other agreement incidental to or
       referred to in this agreement.

14.2   The Vendor and Interface Inc. confirm to the Purchaser that all
       outstanding payments to its advisors will be paid at the Completion Date.


                                      -15-
<PAGE>   18

15.    ASSIGNMENT

15.1   This agreement and all rights and benefits hereunder are personal to the
       parties hereto and may not be assigned at law or in equity without the
       prior written consent of the other party/parties hereto save that rights
       and benefits may be assigned by the Purchaser (i) within the Purchaser's
       Group (and assigned back if the relevant assignee subsequently leaves the
       Purchaser's Group) and (ii) solely by way of security in respect of
       borrowing incurred by the Purchaser for the purpose of this sale and
       purchase.

16.    ENTIRE AGREEMENT

       This agreement (together with any documents referred to herein)
       constitutes the entire agreement between the parties hereto in connection
       with the subject matter of this agreement.

17.    WAIVER, AMENDMENT

17.1   There shall be no waiver of any term, provision or condition of this
       agreement unless such waiver is evidenced in writing and signed by the
       waiving party.

17.2   No omission or delay on the part of any party hereto in exercising any
       right, power or privilege hereunder shall operate as a waiver thereof,
       nor shall any single or partial exercise of any such right, power or
       privilege preclude any other or further exercise thereof or of any other
       right, power or privilege. The rights and remedies herein provided are
       cumulative with and not exclusive of any rights or remedies provided by
       law.

17.3   No variation to this agreement shall be effective unless made in writing
       and signed by all the parties.

18.    FURTHER ASSURANCE

18.1   At any time after Completion the Vendor shall at the Purchaser's expense
       execute all such documents and do such acts and things as the Purchaser
       may reasonably require for the purpose of vesting in the Purchaser the
       full legal and beneficial title to the Assets and giving to the Purchaser
       the full benefit of this agreement.

18.2   The Vendor and the Purchaser each covenants that it will give all
       assistance and accord every facility reasonably required by the
       Purchaser's Accountants, the Vendor's Accountants or any valuer or
       accountant appointed in accordance with clause 4 for the purposes of
       preparing any certificate, statement, accounts or making any
       determination necessary or desirable for the purpose of this agreement,
       and shall allow them or him access to any assets, accounts, books,
       records or other information relating to the Business held by the
       Purchaser or the Vendor.

18.3   The terms of this agreement shall insofar as they are not performed at
       Completion and subject as specifically otherwise provided in this
       agreement continue in force after and notwithstanding Completion.

19.    FAYREWOOD PLC

       Fayrewood hereby guarantees and covenants to and with the Vendor that in
       the event of:-


                                      -16-
<PAGE>   19

       (a)    the Purchaser being deemed unable to pay its debts within the
              meaning of Section 123(1) (a) (b) (e) or (2) of the Insolvency Act
              1986 or otherwise becomes insolvent or suspends making payment
              with respect to all or any class of its debts or announces an
              intention so to do and/or

       (b)    a petition being presented for the winding up of the Purchaser
              (not being a petition that the Purchaser can demonstrate is
              frivolous, vexatious or an abuse of the process of court or
              relates to a claim to which the Purchaser has a good defence and
              is being vigorously contested by the Purchaser) or an order is
              made or resolution passed for the winding up of the Purchaser or a
              notice is issued convening a meeting for the purpose of passing
              any such resolution and/or

       (c)    any petition is presented or other step is taken for the purposes
              of the appointment of an administrator or an administration order
              is made and/or

       (d)    any administrative or other receiver is appointed of the Purchaser
              or any part of its assets or any other steps are taken to enforce
              any encumbrance over its assets and/or

       (e)    any composition compromise or other arrangement is made by the
              Purchaser with its creditors and/or

       (f)    the Purchaser being unable to or failing to pay its debts or other
              monies due hereunder to the Purchaser

       Fayrewood will hold the Vendor harmless therefrom and the consequences
       thereof and will fulfil on demand by the Vendor all or any of the
       obligations of the Purchaser under this agreement as if Fayrewood had
       entered into such obligations directly with the Vendor and was and is the
       primary obligor in place of and/or in addition to the Vendor.

20.    INTERFACE INC.

       Interface Inc. hereby guarantees and covenants to and with the Purchaser
       that in the event of:-

       (a)    the Vendor being deemed unable to pay its debts within the meaning
              of Section 123(1) (a) (b) (e) or (2) of the Insolvency Act 1986 or
              otherwise becomes insolvent or suspends making payment with
              respect to all or any class of its debts or announces an intention
              so to do and/or

       (b)    a petition being presented for the winding up of the Vendor (not
              being a petition that the Vendor can demonstrate is frivolous,
              vexatious or an abuse of the process of court or relates to a
              claim to which the Vendor has a good defence and is being
              vigorously contested by the Vendor) or an order is made or
              resolution passed for the winding up of the Vendor or a notice is
              issued convening a meeting for the purpose of passing any such
              resolution and/or

       (c)    any petition is presented or other step is taken for the purposes
              of the appointment of an administrator or an administration order
              is made and/or


                                      -17-
<PAGE>   20

       (d)    any administrative or other receiver is appointed of the Vendor or
              any part of its assets or any other steps are taken to enforce any
              encumbrance over its assets and/or

       (e)    any composition compromise or other arrangement is made by the
              Vendor with its creditors and/or

       (f)    the Vendor being unable to or failing to pay its debts or other
              monies due hereunder to the Purchaser

       Interface Inc. will hold the Purchaser harmless therefrom and the
       consequences thereof and will fulfil on demand by the Purchaser all or
       any of the obligations of the Vendor under this agreement as if Interface
       Inc. had entered into such obligations directly with the Purchaser and
       was and is the primary obligor in place of and/or in addition to the
       Vendor and Interface Inc. hereby agrees that all court orders obtained in
       the High Court of Justice in London shall be fully enforceable in the
       State of Michigan, USA and any other jurisdiction in which Interface Inc.
       carries on business or has assets wheresoever in the world.

21.    PURCHASER'S UNDERTAKING

21.1   The Purchaser undertakes to use best endeavours to collect Debtors from
       Completion included in the Excluded Assets on behalf of the Vendor for a
       commission of 2.5% per amount received by the Purchaser in respect of
       such Debtor.

21.2   The Purchaser undertakes to hold on trust in a separate bank account in
       England and Wales for the benefit of the Vendor any Debtors included in
       the Excluded Assets received by it and to pay the same less a commission
       of 2.5% per amount received to the Vendor forthwith on receipt providing
       that no commission will be paid in respect of Debtors being collected by
       Trade Indemnity or the Vendor.

22.    ACCESS

       Each of the Vendor and the Purchaser agree to give access to all books
       and records held by the other after Completion which in any way relate to
       the Business, the Assets, the Liabilities, the Excluded Assets or the
       Excluded Liabilities which each may reasonably request of the other in
       order to fulfil any of the obligations or rights set out in this
       agreement including clause 3, 4.4, 6, 7, 8, 9 or 21.

23.    NOTICES

23.1   Save as specifically otherwise provided in this agreement any notice,
       demand or other communication to be served under this agreement may be
       served upon any party hereto only by posting by first class post or
       delivering the same or sending the same by facsimile transmission to the
       party to be served at its address above, or facsimile number given below
       or at such other address or number in the United Kingdom as he or it may
       from time to time notify in writing to the other parties hereto:-


                                      -18-
<PAGE>   21

       The Vendor       -     Fax no: +00 1 734 769 5589
                              Marked for the attention of Robert Nero

       The Purchaser    -     Fax no: 0171 831 6017
                              Marked for the attention of: Paul Griffiths


23.2   A notice or demand served by first class post shall be deemed duly served
       48 hours after posting and a notice or demand sent by facsimile
       transmission shall be deemed to have been served at the time of
       transmission and in proving service of the same it will be sufficient to
       prove, in the case of a letter, that such letter was properly stamped or
       franked first class, addressed and placed in the post and, in the case of
       a facsimile transmission, that such facsimile was duly transmitted to a
       current facsimile number of the addressee at the address referred to
       above.

24.    COUNTERPARTS

       This agreement may be executed in any number of counterparts and by the
       several parties hereto on separate counterparts, each of which when so
       executed and delivered shall be an original, but all the counterparts
       shall together constitute one and the same instrument.

25.    GOVERNING LAW AND SUBMISSION TO JURISDICTION

25.1   This agreement shall be governed by and construed in accordance with
       English law.

25.2   The parties hereto hereby irrevocably submit to the non-exclusive
       jurisdiction of the High Court of Justice in London for the purpose of
       hearing and determining any dispute arising out of this agreement and for
       the purpose of enforcement of any judgment against their respective
       assets.

25.3   The parties hereto agree that service of any writ, notice or other
       document for the purpose of any proceedings in such court shall be duly
       served upon it if delivered or sent by registered post, in the case of
       Interface Inc. to Ashurst Morris Crisp (marked for the attention of Chris
       Ashworth) as specified in clause 20.1.

26.    INVALIDITY

       If at any time any one or more of the provisions hereof is or becomes
       invalid, illegal or unenforceable in any respect under any law, the
       validity, legality and enforceability of the remaining provisions hereof
       shall not be in any way affected or impaired thereby.

27.    CONFIDENTIALITY

       The Vendor undertakes to keep confidential any information relating to
       the Business in its possession.


IN WITNESS whereof this agreement has been executed as a deed on the date first
above written.


                                      -19-
<PAGE>   22

                                   SCHEDULE 1
                           ALLOCATION OF CONSIDERATION

      The Consideration shall be apportioned among the Assets as follows:-



                                       (pound)
1.     Goodwill                        1

2.     Books and Records               1

3.     Contracts                       1

4.     Debtors                         80% of amount as provided in Net Asset
                                       Value Statement less the Liabilities

5.     Fixed Plant                     80% of amount as provided in Net Asset
                                       Value Statement less the Liabilities

6.     Loose Plant                     80% of amount as provided in Net Asset
                                       Value Statement less the Liabilities

7.     Intellectual Property           (pound)1

8.     Properties                      80% of amount in Net Asset Value 
                                       Statement

9.     Stock                           80% of amount in Net Asset Value 
                                       Statement



                                      -20-
<PAGE>   23


                                   SCHEDULE 2
                                   WARRANTIES

1.     Capacity

2.     Accounts

3.     The Business

4.     Employees











                                      -21-
<PAGE>   24


                                   1. CAPACITY

1.1    STATUS AND POSITION OF THE VENDOR

       The Vendor is a limited liability company, duly incorporated and
       subsisting under the laws of England and is not in liquidation,
       administration or administrative receivership, nor has any resolution
       been passed by the shareholders or creditors to put the Vendor into
       liquidation, administration or administrative receivership.

1.2    POWERS AND AUTHORITY

       The Vendor has all requisite corporate power to enter into and perform
       this agreement and the transactions and matters contemplated thereby
       and has taken all necessary action to authorise the entry into and
       performance of this agreement and the transactions and matters
       contemplated thereby.

1.3    VALIDITY

       Each of the obligations expressed to be assumed by the Vendor under
       this agreement and any agreement hereby contemplated constitutes a
       valid and binding obligation of the Vendor respectively.






                                      -22-
<PAGE>   25
                                 2.  ACCOUNTS

2.1    ACCOUNTS WARRANTY

       The Accounts comply with the provisions of the Companies Act 1985 as
       applicable and have been prepared in accordance with the requirements
       of United Kingdom generally accepted accounting principles and
       practices and give a true and fair view of all the assets and
       liabilities and of the state of affairs, financial position and
       results of the Vendor as at and up to the Accounts Date.

2.2    So far as Interface Inc. is aware having made reasonable enquiries at
       that time the information in the letter to the Purchaser from Barons
       Financial Services Limited of 7 May 1998 with respect to the overheads
       and costs is correct in all material respects.

2.3    So far as Interface Inc is aware, the revenue figures for the months
       of October 1995 to March 1998 on the attached schedule have been
       extracted from the books and records of the Business.

2.4    So far as Interface Inc. is aware:-

       (a)    there is no stock in consignment at the Properties or with
              customers;

       (b)    there has been no investigation by Customs and Excise into the
              Business; and

       (c)    the Vendor has no material warranty liabilities that are not
              covered by manufacturers' warranties.



                                      -23-
<PAGE>   26


                                 3. THE BUSINESS

3.1    BUSINESS SINCE THE ACCOUNTS DATE

       (a)    Since the Accounts Date there has been no material adverse change
              in the financial position of the Business and the Business has
              been carried on on a normal basis and the Vendor has not disposed
              of any material assets used in connection with the Business other
              than in the normal course of business.

       (b)    So far as the Vendor is aware since the Accounts Date no
              substantial customer or supplier of the Business has ceased
              purchasing from or supplying to the Vendor in connection with the
              Business.

3.2    CHARGES AND TITLE TO ASSETS

       The Vendor has not (other than in the ordinary course of trading) created
       or agreed to create or suffered to arise any debenture, mortgage, charge,
       lien or encumbrance over any part of the Assets.

3.3    LITIGATION

       There is no litigation, arbitration, prosecution or other legal
       proceedings relating to the Business which is material and so far as the
       Vendor is aware there are no claims, facts or events which are likely to
       give rise to any such proceedings.

3.4    BUSINESS NAME

       The Business is not carried on under any name other than Interface
       Systems International Limited and ISI.

3.5    INTELLECTUAL PROPERTY

       The Disclosure Letter contains brief details, so far as are known by the
       Vendor, of any agreements, licences or other rights granted in respect of
       the Intellectual Property and the Vendor is not a party to any user,
       licence, know-how, information or assistance or development agreement
       which relates to the Business or under any liability to pay royalties in
       respect of any such matter.

3.6    EFFECT OF SALE OF THE BUSINESS

       The Vendor has not been notified that after Completion (whether by reason
       of an existing agreement or arrangement or otherwise) or as a result of
       the proposed acquisition of the Business and Assets by the Purchaser:-

       (a)    any supplier of the Business will cease supplying the Business or
              may substantially reduce its supplies to the Business;

       (b)    any customer of the Business will cease to deal with the Business
              or may substantially reduce its existing level of business with
              the Business;

                                      -24-
<PAGE>   27

       (c)    any officer or senior employee included in the Assumed Employees
              will leave.

3.7    INSURANCE

       The Vendor has produced to the Purchaser all insurance policies in effect
       in relation to the Business and Assets and the premiums due on all such
       policies have been paid up to date.

3.8    LICENCES

       The Vendor has all licences and permissions required for the carrying on
       of the Business and is not materially in breach of the terms or
       conditions of such licences and permissions and the Vendor is not aware
       of any reason why any of them should be suspended or revoked.

3.9    TERMS OF TRADE

       During the 12 months preceding the date of this agreement the Company has
       paid its suppliers in the normal course of the Business.

3.10   GRANTS AND ALLOWANCES

       In relation to the Business, no grant, allowance, aid or subsidy has been
       applied for and received from any supernational, national or local
       authority or government agency which is liable to be repaid.

3.11   GUARANTEES

       All guarantees, indemnities, bonds, letters of comfort, or encumbrance or
       similar obligation given or incurred in relation to or which relate to
       the Liabilities (other than the Excluded Liabilities) have been
       disclosed.

       MISCELLANEOUS

3.12   The Assets are (save for the Excluded Assets) all the assets used by the
       Vendor in the Business as currently conducted.

3.13   The Vendor has not received written notice from any third party alleging
       that it is in material breach of any Contract.

3.14   The Vendor has not received written notice from any third party alleging
       that the operation of the Business infringes the intellectual property
       rights of any person.

3.15   So far as the Vendor is aware, all rent in respect of the Properties
       where due has been paid.

3.16   The Debtors are properly due and payable in the ordinary course of
       business.

3.17   At the date of this agreement no liability is outstanding for pension
       contributions in respect of any Assumed Employee relating to any period
       prior to the Completion Date.


                                      -25-
<PAGE>   28

                                  4. EMPLOYEES

4.1    The particulars of the Assumed Employees annexed to the Disclosure Letter
       show all remuneration and other benefits which the Vendor is bound to
       provide to each Assumed Employee.

4.2    The terms of employment or engagement of all Assumed Employees are such
       that their employment or engagement may be terminated by not more than
       three month's notice given at any time without liability for any payment
       including by way of compensation or damages (except for unfair dismissal
       or a statutory redundancy payment) and the Vendor has not entered into
       any agreement or arrangement for the management of the Business or any
       part thereof other than with the Assumed Employees engaged in the
       Business.

4.3    Since the Accounts Date the Vendor has not paid or given any increase in
       or improvement to the emoluments of any Assumed Employee and the Vendor
       has not made any announcement or proposal concerning any such emoluments
       with or without retrospective operation.

4.4    Since the Accounts Date the Vendor has not been engaged or involved in
       any material dispute with any Assumed Employee or any labour troubles
       involving the Business which are material and no industrial action
       involving such employees, official or unofficial, is now occurring.

4.5    There is no pension scheme of the Company save for the disclosed payments
       by the Company.


                                      -26-
<PAGE>   29


                                   SCHEDULE 3
                                   PROPERTIES

                                     PART 1

                             Unit 2, Unit 4, Unit 5
                                9 Waterloo Avenue
                                  Chemsley Wood
                                   Birmingham

                                     PART 2

5.1    The Vendor shall use all reasonable endeavours to obtain landlord's
       consent ("Landlord's Consent") to the assignment of the leases of the
       Properties by virtue of which the Vendor is the tenant of the Properties
       (the "Leases" and "Lease" shall mean any one of them).

5.2    The Purchaser shall use all reasonable endeavours to assist the Vendor in
       obtaining Landlord's Consent including supplying accounts, references and
       financial information reasonably required by the landlords under the
       Leases for the purposes of granting Landlord's Consent, including
       providing such security as may reasonably be required by the landlords
       either under the Leases or otherwise.

5.3    The Purchaser shall occupy the Properties from Completion until the date
       each assignment is completed (the "Assignment Date") as licensee of the
       Vendor subject to the following provisions:-

       (i)    The Purchaser shall pay or indemnify the Vendor against all rent
              outgoings and expenses relating to each of the Properties after
              Completion until the Assignment Date.

       (ii)   The Purchaser shall indemnify the Vendor against all costs losses
              liabilities actions proceedings claims or demands arising from the
              possession or occupation of any of the Properties by the Purchaser
              or any of its subsidiary companies and the Purchaser shall observe
              and perform all the covenants and conditions contained or referred
              to in the Leases deeds and agreements affecting the Properties or
              relating to them.

5.4    The Vendor and the Purchaser shall complete each assignment as soon as
       reasonably practicable after Landlord's Consent has been obtained and in
       any event within the time specified in the Landlord's licence. The
       Purchaser shall comply with all registration provisions under the Leases
       and serve all notices and make all applications (including to H M Land
       Registry where appropriate) in order to vest the legal title in each
       Lease in the Purchaser.

5.5    If Landlord's Consent has not been obtained in relation to any of the
       Leases within six months of Completion the Vendor shall on that date
       assign the Leases to the Purchaser and the Purchaser shall accept
       assignments of the Leases on that date which shall be deemed the
       Assignment Date for the purpose of each Lease so assigned.


                                      -27-
<PAGE>   30



Signed as a deed by                                )  John R. Ternes

for and on behalf of                               )
INTERFACE SYSTEMS INTERNATIONAL LIMITED            )
in the presence of:-                               )   Christopher J. Ashworth



Signed as a deed by                            )   Pierce Casey
                                               )   David Kleeman
for and on behalf of                           )
FAYREWOOD PLC in the presence of:-             )   Patrick Spicer


Signed as a deed by                            )   John R. Ternes
                                               )
for and on behalf of                           )
INTERFACE SYSTEMS, INC. in the presence of:-   )   Christopher J. Ashworth



Signed as a deed by                            )   Pierce Casey
                                               )   Paul Griffiths
for and on behalf of  DOCTOR BUYLINES LIMITED  )
in the presence of:-                           )   Patrick Spicer







                                      -28-

<PAGE>   1
                                    
                                                                     EXHIBIT 2.2

                             Dated 19th May 1998






                                FAYREWOOD PLC

                                   - and -
                                      
                           DOCTOR BUYLINES LIMITED

                                   - and -

                   INTERFACE SYSTEMS INTERNATIONAL LIMITED

                                   - and -

                           INTERFACE SYSTEMS, INC.



                                      
                              DEED OF VARIATION











                              ASHURST MORRIS CRISP
                                 Broadwalk House
                                 5 Appold Street
                                 London EC2A 2HA

                               Tel: 0171-638 1111
                               Fax: 0171-972 7990

                                 [CJA/I33100018]



<PAGE>   2


THIS DEED OF VARIATION is made on 19 May 1998

BETWEEN:-

(1)        FAYREWOOD PLC  (No.03057247)  whose  registered  office is at 1 
           Pemberton Row, Fetter Lane, London EC4A 3BA (the "FAYREWOOD");

(2)        DOCTOR BUYLINES LIMITED  (No.3360868)  whose  registered  office is 
           at 1 Pemberton Row, Fetter Lane, London EC4A 3BA (the "PURCHASER");

(3)        INTERFACE SYSTEMS INTERNATIONAL LIMITED (No.2100227) whose registered
           office is at 959 Weston Road, Slough Trading Estate, Slough,
           Berkshire, SL1 4HR (the "VENDOR"); and

(4)        INTERFACE  SYSTEMS,  INC. (whose place of business is at 5855 
           Interface Drive, Ann Arbor, Michigan 48103, USA ("INTERFACE INC.");

RECITALS

This deed is supplemented to, and where applicable supersedes certain provisions
of the acquisition agreement dated 13 May 1998 and made between Fayrewood, the
Purchaser, the Vendor and Interface Inc. (the "AGREEMENT").

THE PARTIES AGREE AS FOLLOWS:-

1.        INTERPRETATION

          Words and expressions used in this deed have the meaning given to them
          in the Agreement unless the context requires otherwise or unless
          expressly provided otherwise herein.

2.        DEFINITIONS

2.1       The definitions in clause 1 of the Agreement shall be amended as 
          follows:-

          (a)     Under the definition of "Escrow  Amount",  the sum of 
                  (pound)500,000 shall be replaced with the sum of 
                  (pound)50,000;

          (b)     A new definition shall be inserted as follows:-

          "WITHHELD AMOUNT" means the sum of (pound)350,000.

3.        CONSIDERATION

3.1       The words "provided that if any adjustments upwards to the
          Consideration shall result in the Consideration being more than
          (pound)2,750,000, then the Purchaser shall pay only (pound)2,750,000
          and the Vendor shall retain further receivables (taking receivables in
          order of the oldest receivables first) to those in the Excluded Assets
          to the extent the Consideration would otherwise have exceeded
          (pound)2,750,000" in clause 3.1 of the Agreement shall be deleted.

                                     -1-
<PAGE>   3

3.2       Clause 3.2 of the Agreement shall be deleted and in its place the 
          following words shall be substituted:-

          "(pound)1,770,000 (being (pound)2,170,000 less the Escrow Amount and 
          the Withheld Amount) (the "INITIAL CONSIDERATION") shall be paid on
          Completion on account of the Consideration and the Escrow Amount shall
          be paid into the Escrow Account".

IN WITNESS whereof this deed has been duly executed the day and year first above
written.







                                     -2-
<PAGE>   4



Signed as a deed by                         ) Pierce Casey    
                                            ) Paul Griffiths  
for and on behalf of                        ) 
FAYREWOOD PLC in the presence of:-          ) Patrick Spicer

Patrick Spicer
Solicitor
1 Pemberton Row
Fetter Lane
London EC6A 3BA

Signed as a deed by
                                            ) Pierce Casey   
for and on behalf of                        ) Paul Griffiths 
DOCTOR BUYLINES LIMITED                     ) 
in the presence of:-                        ) Patrick Spicer  

Patrick Spicer
as above
                                              
Signed as a deed by
                                            ) John R. Ternes
for and on behalf of                        )
INTERFACE SYSTEMS INTERNATIONAL LIMITED     )
in the presence of:-                        ) Christopher J. Ashworth

Signed as a deed by
                                            ) John R. Ternes
for and on behalf of                        )
INTERFACE SYSTEMS, INC.                     )
in the presence of:-                        ) Christopher J. Ashworth








                                     -3-

<PAGE>   1
                                                                     EXHIBIT 2.3





                               Dated 13th May 1998




                       THE FIRST NATIONAL BANK OF CHICAGO


                                      -and-


                                INTERFACE SYSTEMS
                              INTERNATIONAL LIMITED


                                      -and-


                             INTERFACE SYSTEMS, INC.



                                    --------



                                 DEED OF RELEASE


                                    --------








                              Ashurst Morris Crisps
                                 Broadwalk House
                                 5 Appold Street
                                 London EC2A 2HA


<PAGE>   2

                               Tel: 0171-638-1111
                               Fax: 0171-972-7990



THIS DEED OF RELEASE is made on 13th May 1998

BETWEEN:-

(1)       THE FIRST NATIONAL BANK OF CHICAGO acting through its office at 1
          Triton Square, London, NW1 3FN (the "BANK");

(2)       INTERFACE SYSTEMS INTERNATIONAL LIMITED (No: 2100227) whose registered
          office is at 959 Weston Road, Slough Trading Estate, Slough,
          Berkshire, SL1 4HR (the "COMPANY"); and

(3)       INTERFACE SYSTEMS, INC. whose principal place of business is at 5855
          Interface Drive, Ann Arbor, MI 48103 USA (the "PARENT").

WHEREAS:-

(A)       By a Debenture dated 10 March 1997 made between the Company and the
          Bank ( the "DEBENTURE") the Company charged all its assets to the Bank
          for the payment and discharge of all monies, obligations and
          liabilities thereby covenanted to be paid (the "LIABILITIES").

(B)       The Bank has agreed to discharge the Debenture and release all the
          charges therein contained.

(C)       "NET PROCEEDS OF SALE" means the amount of money to be paid to the
          Vendor pursuant to clause 3 of the acquisition agreement in respect of
          the Company to be made on or about the date hereof between Fayrewood
          plc, the Company and the Parent, less:-

          (a)       the amount withheld by Ashurst Morris Crisp in respect of 
               their professional fees, costs and disbursements: and

          (b)       an amount representing the professional fees, costs and
               disbursements of Barons Financial Services (UK) Limited.

          (c)      (pound)50,000 to be paid to the Company.

          in relation to the disposal of the Company.

NOW THIS DEED WITNESSES as follows:-

1.        RELEASE OF CHARGES

          The Bank hereby irrevocably releases and discharges all of the charges
          and other security constituted by the Debenture and irrevocably
          releases and discharges the 


                                       2
<PAGE>   3

          Company from all claims and demands it may have against the Company 
          pursuant to the terms of the Debenture.

2.        PAYMENT TO THE BANK

2.1       The Parent and the Company hereby give absolute and irrevocable
          instruction to Ashurst Morris Crisp on the date hereof to pay to the
          bank from the Net Proceeds of Sale as soon as reasonably practicable
          such sum as represents the total indebtedness of the Company to the
          Bank secured by the Debenture.

2.2       The Parent hereby undertakes to the Bank that on the date hereof if
          there is a shortfall between the sum paid under clause 2.1 above and
          the total indebtedness of the Company to the Bank secured by the
          Debenture (the "Shortfall"), it will pay, or it will procure that
          there shall be paid as soon as reasonably practicable the Shortfall to
          the Bank.

3.        RE-ASSIGNMENT

The Bank hereby reassigns and re-conveys to the Company all assets and property
of the Company which were assigned and/or conveyed to the Bank by way of
security pursuant to the terms of the Debenture.

IN WITNESS whereof this Deed has been duly executed the day and year first
before written.


Signed by:                                                    )  J. E. Barling
Authorized signatory for and on behalf of                     )
THE FIRST NATIONAL BANK OF CHICAGO                            )




Executed as a deed by                                         )  John R. Ternes
INTERFACE SYSTEMS INTERNATIONAL LIMITED                       )
Acting by and                                                 )



Executed as a deed by                                         )  John R. Ternes
INTERFACE SYSTEMS INC.                                        )
Acting by and                                                 )


                                       3


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