HEALTHWORLD CORP
8-K, 1998-08-06
ADVERTISING AGENCIES
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<PAGE>

                   U. S. SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

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

                                   FORM 8-K

                                CURRENT REPORT
                    PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


        Date of Report (Date of earliest event reported) July 23, 1998


                            HEALTHWORLD CORPORATION
             ----------------------------------------------------
            (Exact name of registrant as specified in its charter)

                                   DELAWARE
                 --------------------------------------------
                (State or other jurisdiction of incorporation)

        0-23059                                        13-3922288
        -------                                        ----------
(Commission File Number)                  (IRS Employer Identification Number)

100 Avenue of the Americas, New York, New York                        10013
- ----------------------------------------------                        -----
      (Address of principal executive offices)                      (Zip Code)

       Registrant's telephone number, including area code (212) 966-7640
                                                          --------------
  
<PAGE>



ITEM 2.  ACQUISITION OF ASSETS.

On July 23, 1998, Healthworld Corporation ("Healthworld"), through its
wholly-owned subsidiary Healthworld International Holdings Inc. ("HIH"),
acquired 80% of the capital stock of HFT, a French holding company which owns
100% of the capital stock of Torrent, S.A. ("Torrent"), a French healthcare
communications agency, which in turn owns 100% of the capital stock of each of
Aigue Marine SARL ("Aigue") and Katchina Productions SARL ("Katchina"), each a
French company, from Dominique Agostini ("Agostini"), the founder of Torrent,
for a cash purchase price, exclusive of expenses, of 15,271,000 French Francs
(approximately US$2.56 million), in addition to amounts to be paid in cash on or
prior to April 15, 2000 and April 15, 2002 (such amounts, together, not to
exceed 19,000,000 French Francs (approximately US$3.17 million)) to be based
upon future consolidated operating profits of HFT, Torrent, Aigue and Katchina
(together, the "HFT Group Companies").
  
Beginning on January 1, 2002, Agostini shall have the option to sell the
remaining 20% of the capital stock of HFT owned by him (the "Remaining
Shares") to HIH, and beginning January 1, 2006, HIH shall have the option to
purchase the Remaining Shares from Agostini, in each case at a price not to
exceed 11,000,000 French Francs (approximately US$1.83 million) based upon the
value of the assets and operating profits of the HFT Group Companies at the
end of and for the two years immediately preceding the year in which such
option is exercised. The aggregate purchase price to be paid by HIH to
Agostini for 100% of the capital stock of HFT is not to exceed 45,271,000
French Francs (approximately US$7.55 million).

The Press Release of Healthworld Corporation dated July 28, 1998, pertaining
to the acquisition of the HFT Group Companies by HIH, which is annexed hereto
as Exhibit 20.01, is hereby incorporated by reference in this Form 8-K.

On July 24, 1998, Healthworld, through its wholly-owned subsidiary Healthworld
Holdings Limited ("Holdings"), acquired all of the capital stock of Colwood
House Medical Publications (UK) Limited ("Colwood"), a UK medical education
company, from Clive Davies and Stephen Cantle, for a cash purchase price,
exclusive of expenses, of (pound)4,000,000 (approximately US$6.60 million) and
subsequent payments in cash to take place in April 2000 and August 2001 to be
determined based upon the excess of future operating profits of Colwood in
each of the years 1998 through 2001 over agreed upon target levels. The
aggregate purchase price to be paid by Holdings for the capital stock of
Colwood is not to exceed (pound)7,482,000 (approximately US$12.35 million).

The Press Release of Healthworld Corporation dated July 27, 1998, pertaining
to the acquisition of Colwood by Holdings, which is annexed hereto as Exhibit
20.02, is hereby incorporated by reference in this Form 8-K.

All of the funds expended in the acquisition of each of HFT and Colwood were
derived from the proceeds of the initial public offering of the Common Stock,
par value $.01 per share, of Healthworld, which initial public offering was
completed on December 4, 1997.

                                      2


<PAGE>

  
ITEM 7.  EXHIBITS.

EXHIBIT
NUMBER     DESCRIPTION
- ------     -----------

10.01      -- Share Purchase Agreement between Dominique Agostini and
           Healthworld International Holdings Inc., dated July 23, 1988
           (as translated from the French).

10.02      --  Agreement for the sale and purchase of the share capital of 
           Colwood House Medical Publications (UK) Limited, dated July 24, 1998.

10.03      --  Deed of Indemnity among Clive Davies, Stephen Cantle and 
           Healthworld Holdings Limited, dated July 24, 1998.

20.01      --  Healthworld Corporation Press Release, dated July 28, 1998 
           (incorporated by reference in this Form 8-K).

20.02      --  Healthworld Corporation Press Release, dated July 27, 1998 
           (incorporated by reference in this Form 8-K).

Financial Statements of Colwood and pro forma financial information related to
the acquisition of Colwood will be filed in an amendment to this Form 8-K on
or before October 6, 1998.


                                      3


<PAGE>
  

                                  SIGNATURES

                  Pursuant to the requirements of the Securities Exchange Act

of 1934, the Registrant has duly caused this report to be signed on its behalf

by the undersigned thereunto duly authorized.

                                      HEALTHWORLD CORPORATION

                                            By    /s/ Stuart Diamond
                                                ------------------------
                                                Name: Stuart Diamond
                                                Title: Executive Vice President,
                                                       Chief Financial Officer,
                                                       Secretary and Treasurer

Date:  August 6, 1998


                                      4


<PAGE>

  

                               INDEX TO EXHIBITS

EXHIBIT
NUMBER    DESCRIPTION
- ------    -----------

10.01     -- Share Purchase Agreement between Dominique Agostini and
          Healthworld International Holdings Inc., dated July 23, 1988
          (as translated from the French).

10.02     -- Agreement for the sale and purchase of the share capital of
          Colwood House Medical Publications (UK) Limited, dated July 24,
          1998.

10.03     -- Deed of Indemnity among Clive Davies, Stephen Cantle and
          Healthworld Holdings Limited, dated July 24, 1998.

20.01     -- Healthworld Corporation Press Release, dated July 28, 1998
          (incorporated by reference in this Form 8-K).

20.02     -- Healthworld Corporation Press Release, dated July 27, 1998
          (incorporated by reference in this Form 8-K).


                                      5




<PAGE>

  


                           SHARE PURCHASE AGREEMENT




      THIS AGREEMENT, entered on July 23, 1998, between Mr. Dominique Agostini
      residing at 7, rue des Augustins, 92160 Antony, (hereinafter referred to
      as the "Seller") and Healthworld International Holdings Inc. a company
      organized under the laws of Delaware, United States of America, with
      principal offices at 100 Avenue of the Americas, New York, NY 10013,
      U.S.A., (hereinafter referred to as the "Purchaser") represented by Mr.
      Steven Girgenti, President, witnesseth :



                                  WITNESSETH


      Whereas :

      The corporations listed below shall be referred to as the "HFT Group"
      (excluding any corporations in which any one of the corporations in the
      HFT Group may later acquire an interest) :

          HFT ("HFT"), a societe anonyme with a stock capital of FRF 3,360,600
      divided into 33,606 shares of FRF 100 each, having its registered
      offices at 58, rue Pierre Charron, 75008 Paris, registered in the Paris
      Register of Trade and Companies, # 402 339 329 ;

          Torrent S.A. ("Torrent"), a societe anonyme with a stock capital of
      FRF 1,000,000 divided into 2,500 shares of FRF400 each, having its
      registered offices at 58, rue Pierre Charron, 75008 Paris, registered in
      the Paris Register of Trade and Companies, # 334 489 788 ;

          Aigue Marine SARL ("Aigue Marine"), a societe a responsabilite
      limitee with a stock capital of FRF 500,000 divided into 500 shares of
      FRF 100 each, having its registered offices at 10, rue Lincoln, 75008
      Paris, 75008 Paris, registered in the Paris Register of Trade and
      Companies, # 383 160 918 ;

          Katchina Productions SARL ("Katchina"), a societe a responsabilite
      limitee with a stock capital of FRF 100,500 divided into 670 shares of
      FRF 150 each, having its registered offices at 58, rue Pierre Charron,
      registered in the Paris Register of Trade and Companies, # 347 540 460.

      The Seller represents and warrants that he is the owner of 33,606 shares
      (100%) of the shares of HFT, which in turn owns 100% of the shares of


                                      1
<PAGE>

      Torrent, [the latter owning in turn 100% of the shares of Aigue Marine
      and Katchina].

      (The shares of HFT are hereinafter collectively referred to as the
      "Shares" and individually as a "Share" ; a first block of 26,885 (twenty
      six thousand eight hundred and eighty five) Shares is hereinafter
      referred to as the "First Block" and the remainder, namely 6,721 (six
      thousand seven hundred and twenty one) Shares, as the "Second Block")

      The Seller wishes to sell the First Block to the Purchaser, who in turn
      wishes to acquire the same. The Seller and the Purchaser are further
      willing to enter into certain covenants regarding the future purchase by
      the Purchaser of the Second Block.

      The parties have determined themselves on the basis of the
      representations, warranties and agreements which are recited in this
      agreement.


      Now therefore, the parties have agreed as follows: 


      1. Conditions Of The Sale

      1.1 Purchase of the First Block - Purchase Price -  Payment

      1.1.1 The Seller hereby sells the First Block to the Purchaser, which
      the Purchaser hereby accepts, for the price defined in paragraphs 1.1.2,
      1.1.3 and 1.1.4 below, subject to the provisions of paragraph 1.1.5
      below.

      1.1.2 The down payment agreed between Purchaser and the Seller for the
      First Block is FRF 15,271,000 (fifteen million two hundred and seventy
      one thousand French Francs) (herein the "Down Payment").

      For the purpose of this agreement the expression "Relevant Net Assets"
      for a given fiscal year shall mean the consolidated net assets of the
      HFT Group corporations (as defined above, i.e. excluding any
      corporations in which anyone of the corporations in the HFT Group may
      later acquire an interest) for that year, i.e. the sum of the
      consolidated issued share capital and retained profits of the HFT Group
      corporations (excluding any goodwill resulting from the purchase by any
      one of the HFT Group corporations of shares of any one of such
      corporations not owned by the Seller or anyone of the said corporations
      prior to December 31, 1997), calculated in accordance with United States
      Generally Accepted Accounting Principles consistently applied for all
      periods ("USGAAP"). It is acknowledged that part of the shares of
      Torrent, Aigue Marine and 


                                      2
<PAGE>

      Katchina were acquired by the HFT Group corporations after December
      31, 1997.

      The expression "Relevant Profits" for a given fiscal year shall mean the
      audited consolidated operating profits of the HFT Group corporations (as
      defined above, i.e. excluding any corporations in which anyone of the
      corporations in the HFT Group may acquire an interest in the future) for
      that year, before interest and taxation, computed in accordance with
      USGAAP. Moreover, any management fees other than those of the types
      defined in paragraph 1.3.3 below shall be added back for the purpose of
      calculating Relevant Net Assets and Relevant Profits.

      In calculating the Relevant Net Assets and Relevant Profits as at
      December 31, 1997, and for the year then ended, such calculation has
      been made on a pro-forma basis (Annex A), under the assumption that HFT,
      directly or indirectly owns 100% of Torrent, Aigue Marine and Katchina
      during such period.

      The parties acknowledge that the Down Payment is made up of two parts, 
      namely

          (i) DP1, namely FRF 2,271,000 (two million two hundred and seventy
      one thousand French Francs), and

          (ii) DP2, namely FRF 13,000,000 (thirteen million French Francs).

      The Purchaser has paid the Down Payment, to the Seller, by check or wire
      transfer of immediately available funds, on the date hereof, which is
      hereby acknowledged by the Seller.

      The consolidated bank indebtedness of the HFT Group corporations between
      September 15 and 30, 1998 shall be audited by the Purchaser. In the
      event this would show an average daily net indebtedness in excess of FRF
      100,000 (one hundred thousand French Francs), the Seller shall pay to
      the Purchaser an amount equal to the said average indebtedness, plus any
      interest and charges incurred by reason of the indebtedness over the
      period comprised between the date hereof and September 30, 1998. By way
      of exception, in the event it should appear that over the months of
      October, November and December 1998, the average daily net indebtedness
      is equal to zero, the provisions of the first sentence of this
      grammatical paragraph shall not apply. Any sum which the Seller would be
      owing to the Purchaser under this grammatical paragraph shall be set off
      against any sums which may become due to the Seller under paragraph
      1.1.3 and/or 1.1.4. In the event no sums are due by the Purchaser under
      paragraphs 1.1.3 and/or 1.1.4, or if the said sums are insufficient,
      then the Seller undertakes to pay all such amounts remaining due by him
      under this grammatical paragraph out of his own funds, on or before
      December 31, 2002. For the purpose of interpreting this grammatical
      paragraph, the expenses incurred by Torrent in 


                                      3
<PAGE>

      connection with the purchase of the Aigue Marine and Katchina shares
      which were not owned by Torrent prior to December 31, 1997 shall be
      added to the average bank indebtedness.

      1.1.3 In addition, the Purchaser shall pay to the Seller, no later than
      April 15, 2000, a sum equal to 5.5 times 80% of the average Relevant
      Profits for the two years ended 31 December 1999, less DP2.

      1.1.4 In addition, the Purchaser shall pay to the Seller, no later than
      April 15, 2002, a sum equal to 6.5 times 80% of the average Relevant
      Profits for the two years ended 31 December 2001, less the aggregate of
      DP2 and the payment made pursuant to article 1.1.3 above, if any.

      1.1.5 The Seller agrees, notwithstanding any of the above, that the
      purchase price for the First Block and the Second Block shall not exceed
      FRF 43,000,000 (forty three million French Francs) ; provided, however,
      that (a) the amount paid pursuant to paragraph 1.1.3 above shall not
      exceed FRF 20,000,000 (twenty million French Francs) less the amount of
      DP2 and (b) the amount paid pursuant to paragraph 1.1.4 above shall not
      exceed FRF 32,000,000 (thirty two million French Francs) less the amount
      of DP2 and the amounts paid pursuant to paragraph 1.1.3.

      If the result of the computation for the purposes of paragraph 1.1.3
      above is zero or a negative number, then the Purchaser shall have no
      payment obligation under the said paragraph and the Seller shall have no
      obligation to repay any part of the Down Payment.

      If the result of the computation for the purposes of paragraph 1.1.4
      above is zero or a negative number, then the Purchaser shall have no
      payment obligation under the said paragraph and the Seller shall have no
      obligation to repay any amount received under paragraph 1.1.3, if any
      was received, or any part of the Down Payment.

      During the period from the date hereof to 31 December 2001,
      notwithstanding the above, at the Seller's sole option, the Purchaser
      shall pay to the Seller, or, as the case may be, his heirs (i) all
      amounts due under paragraphs 1.1.3 and 1.1.4, or, (ii) alternately,
      within 15 days after completion of the audit for the preceding year, a
      final payment, equal to 6.5 times 80% of the average of the Relevant
      Profits for the two preceding years, less the sums paid under DP2 and/or
      paragraph 1.1.3 above.


      1.2  Purchase of the Second Block-Purchase Price-Payment

      1.2.1 From January 1, 2002, the Seller shall have the option to sell the
      Second Block to the Purchaser, which the Purchaser accepts as a promise
      to sell only.


                                      4
<PAGE>

      After January 1, 2006, the Purchaser shall have the option to purchase
      the Second Block from the Seller, which the Seller accepts as a promise
      to purchase only.

      If one of the above options is exercised, the Seller shall be required
      to sign the relevant movement orders in favor of the Purchaser and the
      Purchaser shall be required to pay the price (as defined below), with
      respect to the Second Block, within 90 (ninety) days from the date of
      the notice of exercise of the option. The party which shall have taken
      the initiative of exercising his option shall bear the registration tax
      consequences of the sale.

      So long as the Seller shall own the Second Block, the Seller shall have
      the obligation, between January 1 and June 30 of each year, to give
      notice to the Purchaser of his decision to sell or not sell the Second
      Block to the Purchaser. If the decision is to sell, then the
      corresponding movement orders in favor of the Purchaser shall be signed,
      and the purchase price paid, on June 30 of the said year or within 90
      (ninety) days following the notice, whichever is the earlier.

      On the date of acquisition of the Second Block, the Purchaser shall pay
      to the Seller 20% times the Relevant Net Assets as at 31 December of the
      fiscal year of the HFT Group corporations preceding the fiscal year
      during which the purchase of the Second Block shall have occurred
      (hereinafter the "Preceding Year").

      In addition, at the latest on June 30 of the fiscal year following the
      Preceding Year, the Purchaser shall pay a sum equal to 6.5 times 20% of
      the average Relevant Profits for the Preceding Year and the year
      preceding the latter.

      1.2.2 Without prejudice to the above, the Seller hereby undertakes to
      sell the Second Block to the Purchaser and the Purchaser undertakes to
      purchase the Second Bloc from the Seller, within 90 (ninety) days from
      the date of the written request of the Purchaser, provided the said
      request is made prior to 1 January 2002, in any one of the following
      circumstances :

      - a "person" or a "group" (within the meaning of Sections 13(d) and
      14(d)(2) of the Securities Exchange Act of 1934 of the United States of
      America, as amended (the "Exchange Act")), other than senior management
      of Healthworld Corporation becomes the "beneficial owner" (as defined in
      Rule 13d-3 under the Exchange Act) of in excess of 50% of the then
      outstanding voting stock of Healthworld Corporation ; or

      - during the period from the date hereof to 31 December 2001 the Seller
      ceases to work for the HFT Group corporations as a result of death,
      incapacity due to illness, dismissal or termination for any reason ;


                                      5
<PAGE>

      Upon the occurrence of any of the above circumstances, the Purchaser
      shall, at the time of the purchase, pay to the Seller or shall cause to
      be paid to the Seller :

      (a) a sum equal to 20% of the Relevant Net Assets for the fiscal year
      preceding the purchase of the Second Block ;

      (b) 25% of DP2;

      (c) 25% of the amount defined in paragraph 1.1.3. Such amount shall be
      paid within 90 (ninety) days following the notification date if the
      amount defined in paragraph 1.1.3 has been paid on such date or with the
      same due date as such payment, if any.

      (d) 25% of the amount defined in paragraph 1.1.4. Such amount shall be
      paid within 90 (ninety) days following the notification date if the
      amount defined in paragraph 1.1.4 has been paid on such date or with the
      same due date as such payment, if any.

      1.2.3 The Seller agrees that notwithstanding any of the above the
      purchase price for the Second Block as calculated in paragraph 1.2.1 or
      1.2.2 above shall not exceed FRF 11,000,000 (eleven million French
      Francs).

      The Seller undertakes for the future not to sell to a third party the
      shares corresponding to the Second Block, nor to authorize any
      encumbrances on the said shares for the benefit of a third party, and to
      do the necessary so that no encumbrance affect the said shares, without
      the prior written consent of the Purchaser.

      1.3  Post acquisition implications

      1.3.1 In the event of acquisitions being made after the date hereof by
      any one of the HFT Group corporations of the kind defined in paragraph
      3.3, first sentence, below, the results of such acquired businesses,
      whatever may be their respective legal forms, as well as the costs,
      expenses and charges which may be borne by any one of the HFT Group
      corporations as a direct consequence of such acquisitions, shall not be
      taken into account for the purpose of calculating any amounts which may
      become due to the Seller, after the date hereof, under paragraphs 1.1 or
      1.2 above.

      1.3.2 The Seller acknowledges the fact that the Purchaser or any
      Healthworld group company designated by Healthworld, may in the future
      charge management fees to one, several or all the HFT Group companies.


                                      6
<PAGE>

      1.3.3 The Seller agrees that management fees corresponding to (i) costs
      incurred at the Purchaser's request on behalf of, or for the purpose of
      rendering services to, the HFT Group corporations as mentioned in the
      preceding paragraph, and (ii) charges for services made to the said
      corporations by Healthworld B.V. covering the cost of marketing
      operations, to the extent the same do not exceed, on a yearly basis,
      (pound) 21,854 (twenty one thousand eight hundred and fifty four Pounds
      Sterling), shall be regarded as bona fide management fees for the
      purpose of the computation of any amounts which may become due to the
      Seller, after the date hereof, under paragraphs 1.1 or 1.2 above.

      1.3.4 The Purchaser shall pay and the Seller shall accept all sums which
      may become due to the Seller, after the date hereof, under paragraphs
      1.1 or 1.2 above, in such currency as shall be legal tender at the time
      in France (French Franc or Euro). If, at the time of payment there
      exists a lawful option between the French Franc and the Euro, payment
      shall be effected in the currency which the Seller shall notify to the
      Purchaser in writing, at least 30 (thirty) days prior to the time when
      the relevant payment shall be due and payable, failing which the
      Purchaser shall pay the amount in the currency of his choice.


      2  Representations And Warranties Of The Sellers

      The Seller represents and warrants to the Purchaser as follows, except
      as disclosed in the Annexes mentioned in this article 2 or in the last
      annex to this agreement (the "Disclosure Schedule") :

      2.1 General Warranties
      With regard to the Shares, and the assets and liabilities of the HFT
      Group corporations, Seller hereby confers upon Purchaser the warranties
      provided in Sections 1625 et seq. and section 1641 of the Civil code, to
      which this agreement has added further warranties, as permitted by
      Section 1627 of the Civil Code.



      2.2  Capacity of Seller - Admission of the Purchaser as a New Stockholder
      The Seller is the unrestricted owner of the Shares and has full capacity
      to sign this agreement and to perform his obligations thereunder.

      The Purchaser has been approved as a new stockholder of HFT pursuant to
      a decision of the board of directors of HFT dated June 30, 1998.


      2.3 Absence of Charges on the Shares and on the assets of the
      corporations


                                      7
<PAGE>

      The Shares and the assets owned by the HFT Group corporations are free
      from any charge, lien, encumbrance, claim, mortgage, chattel mortgage or
      pledge or any other charge, whether contractual, judicial or deriving
      from by-laws, of any nature whatsoever. Notably, the Pledge of the
      Torrent shares has been lifted as at the date hereof and the said
      shares, as of the same date, are free and clear of all encumbrances.

      More generally, there is no flaw in the Seller's title to the Shares or
      the said corporations' title to the said assets.

      2.4  Title to Corporate Assets 

      The HFT Group corporations hold full title :

      2.4.1 to all the assets which are reflected in the audited consolidated
      balance sheet of the HFT Group corporations as at December 31, 1997
      included in Annex A hereto (the "1997 Balance Sheet"), and,

      2.4.2   to all its intangible assets.

      Since the date of the 1997 Balance Sheet there has been no reduction in
      the net book value of the HFT Group corporations, except for losses
      incurred in the normal course of business from January 1, 1998 to the
      date hereof.

      There exist no assets of the HFT Group corporations that are not
      reflected in the Financial Statements (as defined in section 2.8),
      excepting those which are reflected in the Disclosure Schedule. None of
      the assets reflected in the Financial Statements have been sold or
      otherwise disposed of by the HFT Group corporations, excepting those
      that are reflected in the Disclosure Schedule.

      As regards those assets subject to long- term movable or immovable
      lease-purchase agreements, the HFT Group corporations are the sole
      beneficiary of such lease-purchase agreements and have duly complied
      with all their obligations thereunder. A list of the said assets is
      attached as Annex B.

      2.5  Shares
      The share capital of each of the HFT Group corporations and the par
      value of the Shares are as stated above.
    
      All the Shares are issued and fully paid up and are all of the same
      class.

      The HFT Group corporations have issued no securities other than the
      shares corresponding to their respective capital stocks, as shown above.

                                      8
<PAGE>

      Neither the HFT Group corporations nor the Seller have recognized to
      anyone, contractually or otherwise, any rights which might require (i)
      the issuance, exchange, assignment, contribution or redemption of shares
      or other securities of the HFT Group corporations or (ii) any further
      payments to previous shareholders.

      There exist no stockholder agreements binding the Seller, previous
      stockholders of the HFT Group corporations, the HFT Group corporations,
      except for the agreements with the Healthworld Group.

      2.6  Subsidiaries and Joint Ventures
      With the exception of the stockholding relationships which exist among
      them, the HFT Group corporations have no subsidiaries and hold no
      interest in any other legal entity, whatever may be the nature or form
      of such entity, excepting the interest in Healthworld B.V., with which
      the parties are familiar.

      Notably, neither of the HFT Group corporations any longer holds an
      interest in Duetto S.A., and neither of the said corporations is in any
      way liable to third parties or the Seller with respect to the sale of
      the interest in Duetto S.A. or with respect to any obligation undertaken
      by Duetto S.A. vis-a-vis third parties.

      The HFT Group corporations have not entered with anyone into any
      joint-venture agreements.

      2.7  Organization of the HFT Group corporations
      The HFT Group corporations have been lawfully organized and, since their
      inception, have remained in good standing in regard to their


                                      9
<PAGE>

      respective legal obligations. The HFT Group corporations are in no way
      legally restricted in their ability or capacity to pursue their
      businesses as now pursued and as currently contemplated being pursued.

      2.8  Financial Statements

      2.8.1 The documents listed below, which are represented by the Seller to
      be true and complete namely :

      (a)the audited consolidated balance sheet of the HFT Group corporations
      as of December 31, 1997 and the related audited consolidated statement
      of operations [(verbatim in the French version)], cash flow [(verbatim
      in the French version)] and stockholders' equity [(verbatim in the
      French version)] for each of the years then ended, which, as regards HFT
      and Torrent, have been certified by their respective statutory auditors,
      including all notes and schedules relating thereto, and,

      (b)the balance sheets and operating accounts at December 31, 1995 and
      1996, certified by the statutory auditors as regards HFT and Torrent,
      and approved by the shareholders as regards Katchina and Aigue Marine,
      including all notes and schedules relating thereto,

      are collectively referred to herein as the "Financial Statements" and
      are annexed hereto as Annex A.

      The Financial Statements referred to in 2.8.1 (a) above and any of the
      financial statements required to be delivered pursuant to the terms
      hereof are or will be prepared from the books and records of the HFT
      Group corporations in accordance with USGAAP. All the Financial
      Statements fairly and truly show the financial condition of the HFT
      Group at such dates and the results of its operations as of the dates or
      throughout the periods indicated.

      The pro forma consolidated financial statements of the HFT Group
      corporations and the related notes thereto annexed hereto as Annex A
      have been prepared on a basis consistent with the historical financial
      statements of the HFT Group, give effect to and present fairly, the
      assumptions used in the preparation thereof on a reasonable basis and in
      good faith.

      Except as set forth in the Disclosure Schedule, and to the extent and in
      the amount set forth in the 1997 Balance Sheet, the HFT Group did not
      have any direct or indirect indebtedness, liability, claim loss, damage,
      deficiency or obligation, fixed or unfixed, choate or inchoate,
      liquidated or unliquidated, secured or unsecured, accrued, absolute,
      contingent or otherwise (collectively the "Liabilities"). Except as
      otherwise set forth in the Disclosure Schedule or on the other Annexes
      to this agreement,


                                      10
<PAGE>

      there are no other Liabilities of the HFT Group corporations relating to
      or arising out of any act, transaction, circumstance or state of facts
      which occurred or existed on or after December 31, 1997, other than
      those Liabilities arising in the ordinary course of business consistent
      with past practice, those disclosed in this agreement and such
      Liabilities are of the same character, type and magnitude as incurred in
      the past.

      Except as set forth in the Disclosure Schedule, no expenditure, accrued
      or paid by the HFT Group corporations may be regarded, for tax purposes
      or otherwise, as disproportionate.

      Similarly, the liquidation of corporations other than the HFT Group
      corporations as they exist on the date hereof, or the sale of shares or
      assets previously owned by any one of the HFT Group corporations to the
      Seller or third parties, prior to the date hereof, have been effected in
      such a manner and under such conditions that such liquidations or sales
      will not have a material negative impact on any one of the HFT Group
      corporations, from a tax standpoint or otherwise.

      2.8.2 The Seller warrants that the only dividends paid to the Seller by
      any one of the HFT Group corporations in 1997 or in 1998 were the
      following :

      - 1997 Torrent : FRF 46,400 (voted and paid) ; 

      - 1997 Aigue Marine : FRF 35,000 (voted in 1997 and paid in 1998).

      2.9 Representations and Warranties as to the Absence of Certain Changes
      or Events Since December 31, 1997

      For the period extending between December 31, 1997 and the date hereof,
      excepting for the items disclosed by the Seller in the Annexes referred
      to in this article 2.9 or in the Disclosure Schedule :

      2.9.1 the tangible assets of the HFT Group corporations have not
      suffered any damage, destruction, or loss (whether covered by insurance
      or not) ;

      2.9.2 The French medical advertising market environment is much less
      favorable in 1998 and steps have been taken to remedy the difficulties
      resulting from this state of fact. As a consequence of such
      difficulties, the HFT Group corporations have suffered losses during the
      first half year of 1998. Save for the aforementioned, the HFT Group
      corporations have not experienced nor do they currently anticipate, any
      material adverse change in their businesses, operations or financial
      condition ;

      2.9.3 the HFT Group corporations have not engaged in operations nor
      undertaken obligations other than in the ordinary conduct of their
      respective businesses ;


                                      11
<PAGE>

      2.9.4 the level and conditions of compensation or salary agreed between
      the HFT Group corporations and their directors, officers or employees
      and the profit sharing plans in favor of the above-mentioned persons
      have not undergone any abnormal fluctuation ; all payments due to third
      parties, including non obligatory private pensions, have been paid or
      are accrued as required by law, and all payments in respect of the said
      private pensions due in the year 1998 have either been paid or are
      accrued in the books of the relevant HFT Group corporation or
      corporations ;

      2.9.5 there has been no termination of agreements and the HFT Group
      corporations have waived no rights other than in the normal course of
      business ;

      2.9.6 the HFT Group corporations have remained current as regards their
      financial obligations ;

      2.9.7 the HFT Group corporations are not aware of any claim against them
      which, notably, may jeopardize the marketability of their products or
      services, or render the HFT Group corporations or their directors,
      officers or employees, liable under civil or criminal law ;

      2.9.8 the HFT Group corporations have not lost any major source of
      business nor do they anticipate a significant reduction in the level of
      the same.

      2.10  Industrial and Intellectual Property Rights
      The HFT Group corporations hold full title without any reservation to
      all the industrial and intellectual property rights described in Annex
      D, which Annex gives a full list of the rights owned by the said
      corporations, and no third party has ever challenged the title to or the
      validity of, such rights, nor has infringed the same.

      The activities of the HFT Group corporations, up to the date hereof, are
      not liable to create any conflict with industrial or intellectual
      property rights of third parties.

      The transactions contemplated in this agreement shall not cause any loss
      of or reduction in, any of such rights.

      The HFT Group corporations have granted no licensing rights and, more
      generally, have granted no rights to third parties, bearing on any one
      of the said corporations' industrial and intellectual property rights.
      Similarly, the HFT Group corporations have not received any licensed
      rights and, more generally, have received no rights from third parties
      bearing on industrial or intellectual rights belonging to any such third
      parties.


                                      12
<PAGE>

      2.11  Insurance
      Insurance policies with respect to persons, property and the HFT Group
      corporations' liability and, as the case may be, third party liability,
      are fully binding upon the relevant insurance carriers. There are no
      circumstances existing which would enable the said carriers to refuse or
      limit the coverage provided in the policies ; no carrier has refused to
      renew an insurance policy and there have been no increases in the rates
      or insurance premiums, except in the normal course of business. The HFT
      Group corporations are current with the payment of their premiums. The
      list of insurance policies is shown in Annex E.


      2.12  Contracts

      2.12.1 All contracts to which the HFT Group corporations are parties,
      and which are currently in force, are lawful and binding upon their
      signatories and none of the parties to the said agreements have
      challenged the validity thereof, or breached the same. None of the said
      contracts are the subject matter of current or threatened litigation.
      Contracts, other than service contracts, involving the payment by or to
      the HFT Group corporations after the date hereof, of amounts, per
      contract exceeding FRF 100,000 (one hundred thousand French Francs), are
      listed in Annex F.

      2.12.2 Excepting for the agency agreements, commissioning agreements
      relating to the securing of business or to the sale of the HFT Group
      corporations' goods or services listed in the said Annex F, no contracts
      of such nature are binding on the HFT Group corporations, and if any
      should come to light, the Seller shall bear all the consequences of
      their termination, provided such termination by the relevant corporation
      is notified to the relevant third party or is notified by the latter to
      the relevant corporation, within 18 (eighteen) months from the date
      hereof.

      2.13  Litigation
      All litigation, proceedings or judicial or administrative inquiries or
      audits currently pending or threatened, to which anyone of the HFT Group
      corporations, or, in connection with the conduct of the affairs of the
      HFT Group corporations, the Seller personally or the HFT Group
      corporations' directors, officers or employees, are parties, are listed
      in Annex G. Since January 1, 1993, no court or administrative decision
      has found against the HFT Group corporations or, in connection with the
      conduct of the affairs of the HFT Group corporations, against Seller
      personally or the HFT Group corporations' directors, officers or
      employees, and there is no reason to anticipate that any such decisions
      shall be rendered in respect of facts known, or which should have been
      known to a prudent businessman, to the HFT Group corporations, their
      directors, officers or employees, or the Seller.


                                      13
<PAGE>

      2.14  Taxes - Customs - Social Security and Labor Law Obligations
      All French and foreign returns concerning taxes, turnover taxes, value
      added taxes, recording taxes and other taxes, all customs returns and
      social security and labor law returns and declarations which the HFT
      Group corporations were under an obligation to file were so filed on or
      before due date and the returns and declarations were prepared and
      signed as prescribed by law. The HFT Group corporations have paid or
      done the necessary to book adequate reserves to allow for the payment,
      on due date, of all taxes and dues prescribed by law and resulting from
      such returns.

      No claims for non-reporting, late reporting, late payment or non-payment
      of any of the above taxes or dues, or for non compliance with the law,
      were received by the HFT Group corporations and no fact creates concerns
      that any such claims may be notified. All books and registers that the
      HFT Group corporations must keep as required by law for all of the above
      are in existence, are duly kept, and are up to date.

      In the event of a final reassessment of any one of the above mentioned
      taxes or dues the amounts claimed shall be paid forthwith by the Seller
      to the Purchaser as stated in article 7 below.

      2.15  Conformity with Company Law
      The HFT Group corporations and their directors and officers, in the
      pursuit of their activities, have in all respects complied with their
      legal obligations under company law and the minutes of stockholders' and
      directors' meetings are true and sincere and faithfully reflect the
      position of the HFT Group corporations under company law.

      2.16  Compensation and salaries - Labor Law and Social Security Law
      The HFT Group corporations and their directors and officers, in the
      pursuit of their activities, have in all respects complied with their
      legal obligations under labor law and social security law. The books and
      registers which are required to be kept under social security and labor
      law are true and sincere and faithfully reflect the position of the HFT
      Group corporations under labor and social security law.

      2.17  Permits
      No permit or consent or approval of any governmental authority or agency
      or any other party whatsoever is needed to allow the Seller to fulfill
      its obligations hereunder.

      2.18  Continuation of Business Relationships
      Neither of the customers or suppliers of the HFT Group corporations
      other than those referred to in the Disclosure Schedule may invoke
      contractual provisions allowing for termination on the grounds that an
      

                                      14
<PAGE>

      agreement such as this agreement has been entered into between the
      parties hereto.

      2.19  Interests in the Business of Competitors, Suppliers or Customers
      Neither of the Seller nor any of the directors, officers nor, to the
      best of Seller's knowledge, the employees of the HFT Group corporations,
      have an equity or other interest in the business of any competitor,
      supplier or customer of the HFT Group corporations (except as regards
      Duetto, FMCE and Bio Alliance) and neither of them personally owns or
      has any right whatsoever over the assets used by the HFT Group
      corporations for the pursuit of their activities. As regards Duetto,
      FMCE and Bio Alliance, this representation may not be interpreted as
      forbidding any future continuation of the existing trading
      relationships.

      2.20  Receivables
      The HFT Group corporations' receivables recorded as of June 30, 1998 for
      Aigue Marine and July 20, 1998 for Torrent and Katchina are listed in
      Annex H, and neither of such receivables is delinquent by more than six
      months from the date of the legal fact or act which generated the same,
      and the Seller warrants that all such outstanding and unpaid
      receivables, except those booked as bad debts, shall be fully settled in
      favor of the relevant HFT Group corporation at the latest 6 (six) months
      from the date hereof.

      All the subsidies and grants which the HFT Group corporations have
      received and which they are entitled to receive are mentioned in the
      said Annex H.

      2.21  Environment
      The HFT Group corporations have adhered strictly to all applicable
      environmental laws and regulations, and Sellers, the HFT Group
      corporations and their directors and officers are not aware of any
      problem or dispute in this respect.

      2.22  Stockholder Guarantees - Stockholder Accounts
      The Seller has granted no guarantees in support of the credit of the HFT
      Group corporations, and does not hold receivable or payable accounts in
      the books of any one of the HFT Group corporations, excepting for the
      loan granted by the Seller to Torrent, in the amount of FRF 1,700,000
      (one million seven hundred thousand French francs), as per the agreement
      dated July 23, 1998, attached hereto in the Disclosure Schedule.

      2.23  Intermediaries
      Seller represents that no intermediary, at his request, or at the
      request of the HFT Group corporations or Healthworld B.V. or their
      directors or officers, assisted in procuring the conclusion of this
      agreement and that 


                                      15
<PAGE>

      no fee is therefore payable in this respect, in particular by any one of
      the HFT Group corporations.

      2.24 Year 2000 and Euro Compliance
      Seller represents that the HFT Group companies accounting and software
      systems are compliant with year 2000 and Euro technical requirements.

      2.25  Certificates from URSSAF and the Revenue Service
      The Seller certifies that the certificates of the Chief Tax Collector's
      office and of URSSAF evidencing that, as at their respective dates of
      issuance, the HFT Group corporations had no debt vis-a-vis such
      organizations (Annex I), correspond to his awareness of the HFT Group
      corporations' position vis-a-vis such authorities.


      3. REPRESENTATIONS AND WARRANTIES OF THE PURCHASER

      3.1  Organization
      Purchaser is a duly organized company and has full capacity to sign this
      agreement and to perform the obligations contracted by Purchaser under
      this agreement.

      3.2 Permits 
      No permit whatsoever is needed to allow the Purchaser to fulfill its 
      obligations hereunder.

      3.3 Further Investments in France in the Health Industry
      The Purchaser hereby guarantees that, so long as the Seller shall own
      the Second Block, the Purchaser shall not make any new investments in
      the business of sales forces (medical and pharmaceutical agents
      networks), medical advertising, public relations in the medical area or
      medical training in France otherwise than through one of the HFT Group
      companies.

      In the event of any such acquisition(s), if the Seller is at the time in
      charge of the management of the HFT Group corporations and of the new
      acquisition(s), the Seller agrees that the said added responsibilities
      will not in any way restrict his general obligation to develop the
      business of the HFT Group corporations, as it exists on the date hereof.


      4. REPRESENTATIONS AND WARRANTIES OF THE SELLER REGARDING THE MANAGEMENT
      OF THE HFT GROUP CORPORATIONS SINCE DECEMBER 31, 1997 UP TO THE DATE
      HEREOF


                                      16
<PAGE>

      The Seller represents and warrants to the Purchaser, subject to the
      indications in the Disclosure Schedule, that since December 31, 1997 up
      to the date hereof, the Seller, the managers, officers, and corporate
      authorities of the HFT Group corporations :

      4.1 have operated the businesses of the HFT Group corporations as
      prudent businessmen ;

      4.2 have used their best efforts to preserve the business organization
      of the HFT Group corporations intact ;

      4.3 have done the necessary so that the HFT Group corporations do not
      experience any material adverse change in their businesses, operations
      or financial conditions ;

      4.4 have maintained the tangible assets of the HFT Group corporations in
      sufficient operating condition and state of repair to enable them to
      operate their businesses in the manner in which they were operated
      immediately prior to December 31, 1997 ;

      4.5 have maintained the insurance coverage of the HFT Group corporations
      in full force and effect ;

      4.6 have used their best efforts to keep available to the HFT Group
      corporations the services of their present key employees beyond the date
      hereof ;

      4.7 have paid the accounts payable of the HFT Group corporations and
      satisfied all their other obligations in general ;

      4.8 have used their best efforts to maintain good business relationships
      with the main suppliers and customers of the HFT Group corporations ;

      4.9  have not made any change in their by-laws ;

      4.10 have not made any change in their stock capital nor agreed to any
      issuance or redemption of shares ;

      4.11  have not declared or distributed any dividend, notably to the 
      Seller ;

      4.12 have not contracted any substantial financial obligation, and
      notably have contracted no loans (excepting the loan referred to in
      paragraph 2.22), nor used any credit facility, nor participated in any
      currency or other derivatives hedging, nor waived any right ;

      4.13 have not agreed to any charge on their assets (likewise, the Seller
      has not agreed to any charge on the Shares) ;


                                      17
<PAGE>

      4.14 have not sold or transferred any of their assets, nor waived any
      claim or right whatsoever ;

      4.15 have not made any material changes to the compensations, salaries
      or profit sharing plans of the employees of the HFT Group corporations ;

      4.16 have not hired or terminated any employees or transferred anyone of
      the same, either geographically or among the HFT Group corporations,
      excepting interim workforce contracts, not exceeding a duration of 3
      (three) months for any one of the latter ;

      4.17 have not made any material changes in the accounting methods,
      principles or practices used by the HFT Group corporations ;

      4.18 generally, have not behaved otherwise than as if they were managing
      a third party's affairs as prudent professional business people,
      pursuant to the provisions of s.1372 et seq. of the Civil Code.


      5.   CONFIDENTIALITY

      Seller shall keep confidential any information which has been made
      available to him by or on behalf of Purchaser, in connection with the
      transactions being the subject matter of this agreement (hereinafter
      "Confidential Information"). The Seller shall only use Confidential
      Information for the purpose of finalizing the transactions agreed
      herein. Confidential Information does not include information generally
      available to the public or which may become available to the Seller
      lawfully from a source other than the Purchaser or the HFT Group
      corporations.


      6. OBLIGATIONS OF THE PARTIES PERFORMED PRIOR TO OR ON THE DATE HEREOF

      6.1  Management and Statutory Auditors
      The directors and officers of the HFT Group corporations in office
      (excepting for the Seller), have handed to the Purchaser a letter of
      resignation from their respective offices, effective on the date on
      which their successors will be appointed by the competent corporate
      authorities of the HFT Group corporations. As regards statutory
      auditing, the Seller agrees that the Purchaser may appoint co- statutory
      auditors (in office and alternate), in the event where the Purchaser
      would deem the same to be necessary.

      Seller represents that he has caused the relevant corporate authorities
      of the societes anonymes among the HFT Group corporations to call a


                                      18
<PAGE>

      meeting of the stockholders for July 23, 1998, the agenda of which
      provides for the appointment of successors in lieu of resigning
      directors.


      6.2 Corporate Books and Records 
      Seller has delivered to Purchaser :

          a copy, certified by the president general manager of HFT, of the
      minutes of the appropriate corporate authority, evidencing that such
      authority has accepted Purchaser as a new stockholder ;

          the HFT Group corporations' corporate books and records (minutes
      books, stock movement and stockholder accounts books, attendance
      registers, attendance sheets, trade registry records), all of which
      Seller represents are current on the date hereof and cover the corporate
      life of the HFT Group corporations from its organization.

      6.3  Delivery of the Shares
      Seller has delivered to Purchaser on the date hereof the necessary
      movement orders in favor of Purchaser which Seller represents are
      validly binding upon the Seller for all and every one of the shares
      included in the First Block.

      6.4 Entity Classification Election
      Seller has delivered to the Purchaser copies of the US Internal Revenue
      Service forms 8832, the originals of which have been duly dated and
      signed, and then filed with the US Internal Revenue Service prior to the
      date hereof, in which both Aigue Marine and Katchina have made election
      2(e) on the said forms

      6.5 Purchase by Torrent of Aigue Marine Shares
      By agreement dated July 23, 1998, attached hereto as Annex J, the Seller
      has extended a loan of FRF 1,700,000 (one million seven hundred thousand
      French Francs) to Torrent for the purchase by the latter, prior to the
      date of execution of this agreement, of 245 (two hundred and forty five)
      Aigue Marine shares. The said shares, added to the 255 (two hundred and
      fifty five) shares of Aigue Marine previously owned by Torrent represent
      100% of the capital stock of Aigue Marine. The said loan is
      interest-free and the Purchaser agrees that it shall cause Torrent to
      repay the principal of the loan at the latest one year following the
      date hereof.


      7    INDEMNIFICATION

      The Seller agrees that all representations and warranties made or given
      by the Seller in this agreement or in any certificate or other document
      delivered pursuant hereto by Seller, shall remain in full force and
      effect 


                                      19
<PAGE>

      for a period of three years after the date hereof, excepting as regards
      tax, social security and labor law matters, in which areas the periods
      of the statutory statutes of limitations shall apply (hereinafter the
      "Validity Period").

      Seller undertakes to fully indemnify the Purchaser, up to 80% (eighty
      percent) of any damage to the Purchaser or any one or all of the HFT
      Group corporations (including interest, fees (including attorneys'
      fees), expenses and costs), resulting, directly or indirectly, from a
      violation (i) of an undertaking of the Purchaser made herein, or (ii) of
      a discrepancy between a representation of the Seller made herein and the
      facts observed (hereinafter, collectively, a "Violation"), irrespective
      of the date (prior to the end of the Validity Period), on which the
      Violation has been disclosed or becomes known to the Purchaser.

      For the purpose of calculating the damage to the Purchaser above
      mentioned, the gross amount thereof shall be reduced by any net cash
      benefit (including tax-wise) which may result from the existence of the
      damage. Furthermore, claims shall be subject to a one time claims
      threshold of FRF 250,000 (two hundred and fifty thousand French Francs).
      If that threshold is exceeded, the full amounts claimed shall become
      due, including the first FRF 250,000 (two hundred and fifty thousand
      French Francs).

      Purchaser shall promptly notify Seller in writing of any claim for
      indemnification, specifying in detail the basis of such claim, the facts
      pertaining thereto and, if known, the amount or an estimate of the
      amount which Purchaser regards as owing to it by Seller. Purchaser shall
      provide to Seller, to the extent requested by Seller in writing, as
      promptly as practicable following the claim, all information and
      documentation as shall reasonably be necessary to support and verify the
      claim asserted, and Seller, upon request in writing, shall be given
      reasonable access to all books and records in the possession or control
      of Purchaser or any of its affiliates, which may reasonably be
      considered as related to the claim.

      All claims for compensation with respect to a Violation shall need to be
      notified by the Purchaser to the Seller in writing, at the latest before
      the end of the third month following the end of the Validity Period. All
      claims made timely may be pursued by Purchaser until finally resolved,
      judicially or otherwise, notwithstanding the end of the Validity Period.


      8   SET-OFF - INTEREST
      All amounts which may become due and payable by the Seller to the
      Purchaser hereunder may be set off, in the sole discretion of the
      Purchaser, against any amount which the Purchaser may then be owing to
      the Seller hereunder or otherwise.


                                      20
<PAGE>

      In the event of a dispute as to the existence of a Violation or its
      consequences, the Court shall use, for the purpose of the computation of
      interest on the damages principal, PIBOR (three months) plus three
      interest points, counted from the date on which the damage shall have
      financially impacted the relevant HFT Group corporation or corporations.
      Any sum due by the Purchaser to the Seller hereunder which will not have
      been paid to the Seller on due date shall bear interest in favor of the
      Seller using the P.I.B.O.R. (three months) plus three interest points.


      9. MISCELLANEOUS

      9.1  Further Cooperation
      From the date hereof the Seller, upon request of the Purchaser and at
      Purchaser's cost, shall take any action and sign and deliver any
      documents which may prove necessary to allow Purchaser to fully exercise
      its rights hereunder.

      9.2  Non compete
      The Seller hereby undertakes not to compete directly or indirectly with
      the HFT Group corporations, in any manner or under any form whatsoever,
      in areas of business which are identical or similar to the areas of
      business of any one of the HFT Group corporations or Healthworld B.V.,
      i.e. the area of medical advertising and health in general, for a period
      of time running from the date hereof until the later of the fourth
      anniversary date hereof or 24 (twenty-four) months following the date on
      which the Seller shall have ceased to be a salaried employee and/or a
      corporate officer of any one of the HFT Group corporations.

      In the event the ownership of the Purchaser or of the corporations in
      its group, in the capital stock of the HFT Group corporations were to
      fall below 50%, the Purchaser promises to pay to the Seller a sum equal
      to the compensation which the Seller shall have received as compensation
      from the HFT Group corporations during the fiscal year immediately
      preceding the fiscal year during which the loss of control shall have
      occurred.

      9.3  Successors and Assigns
      The provisions hereof shall inure to the benefit of and be binding upon
      the respective heirs and/or successors of the parties hereto.

      9.4  Modification and Waiver
      No modification of the provisions of this agreement shall be binding
      unless the same is in writing and duly executed by all the parties
      hereto. Each of the parties may waive any one of its rights under this
      agreement but only in a writing notified to the other party.

      9.5  Public Announcements


                                      21
<PAGE>

      Any communications and notices to third parties and all other publicity
      concerning the transactions contemplated by this agreement (other than
      governmental or regulatory filings) shall be planned and coordinated by
      and among each of the parties.

      Unless required by applicable law or the rules and regulations of the
      NASDAQ Stock market, none of the parties shall disseminate or make
      public, or cause to be disseminated or made public, any information
      regarding the transactions contemplated hereunder without the prior
      written approval of the other parties, which approval shall not be
      unreasonably withheld.

      9.6 Treasury Department of the Ministry of Economy
      This agreement is subject to the laws and regulations pertaining to
      foreign investments into France. The Purchaser shall prepare and file
      the requisite investment report to the said authorities.

      9.7  Expenses and Fees
      Any and all expenses, including attorneys fees, in connection with this
      agreement or the transactions contemplated therein, shall be paid by the


                                      22
<PAGE>



      party incurring such expenses. The Seller and the Purchaser agree that
      in no event any one of the HFT Group corporations shall have to pay or
      advance any of such expenses or fees.

      The recording hereof with the registration-tax office shall be effected
      and paid for by the Purchaser. Any and all other taxes, dues or fees and
      contributions resulting from the execution hereof shall be borne by the
      individual or entity obligated to bear the same under the law.

      9.8  Notices
      Any documents, notices, requests or instructions to be given hereunder
      by one of the parties to the other shall be in writing by registered
      letter with bill of receipt requested, as provided below or to any other
      duly notified address.

      If the notice is to the Seller, the same shall be deemed validly made if
      sent to his last known address, with copy to Mr. Michel Duplessis,
      counsel for the Seller.

      If the notice is to the Purchaser, the same shall be deemed validly made
      if sent to the Purchaser at its address first above mentioned, with copy
      to Mr. Stuart Diamond, Healthworld Corporation, and to the law firm of
      Chambaz & Suermondt, 24 rue de Prony, 75017 Paris, counsel for the
      Purchaser.

      9.9  Headings
      The headings of the articles and paragraphs hereof are inserted for
      convenience only and shall not be deemed a constitutive part of this
      agreement and shall not affect the construction thereof.

      9.10  Documents Constituting this Agreement
      This agreement and its Annexes A to J, together with the Disclosure
      Schedule, constitute the sole understanding of the parties with respect
      to the subject matter hereof, and replace all prior verbal or written
      understandings between the parties on the said subject matter.

      9.11  Governing Law and Venue
      This agreement shall be governed by the laws of France. The parties
      agree that any dispute which may arise between them with respect to this
      agreement shall be referred to the Tribunal de Grande Instance of Paris.

                                      23
<PAGE>

                               FINAL STATEMENT :


      This agreement was presented to signature by the parties in a bound and
      sealed format, and each of the parties have in consequence waived the
      formality of initialing each one of the pages of this agreement and of
      its exhibits, the signatures of the parties appearing solely below.



      Signed in Paris on the date indicated on the first page of this
      agreement, in three (3) copies, one of which for the Registration
      Authority,




      Purchaser,                                                  Seller,





      /s/ Steven Girgenti                              /s/ Dominique Agostini
      --------------------------------------           ------------------------
      Healthworld International Holdings Inc.          Dominique Agostini
      by : Steven Girgenti
      title : President


                                      24
<PAGE>

                                LIST OF ANNEXES




 Annexes                                          Description

Annex A                           A Calculation of the Net Assets and Profit
                                  at December 31, 1997, consolidated balance
                                  sheet of the HFT Group at December 31, 1997,
                                  Financial Statements

Annex B                           List of Assets

Annex C                           NONE

Annex D                           List of Industrial and Intellectual Property 
                                  Rights

Annex E                           List of Insurance Policies

Annex F                           List of contracts providing for the payment 
                                  by or to any one of the HFT Group companies 
                                  of amounts exceeding FRF 100,000 per contract

Annex G                           List of litigations, proceedings, judicial 
                                  or adminis-trative inquiries or audits 
                                  currently pending, threatened or expected

Annex H                           Schedule of subsidies and grants which the 
                                  HFT Group companies have received and are 
                                  entitled to receive

Annex I                           Certificates issued by the Revenue Service 
                                  and URSSAF

Annex J                           Loan agreement dated July 23, 1998

Disclosure Schedule


                                      25



<PAGE>


                              DATED 24th July 1998

                     CLIVE DAVIES, STEPHEN CANTLE AND OTHERS

                                      and -

                          HEALTHWORLD HOLDINGS LIMITED


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

                                    AGREEMENT

                for the sale and purchase of the share capital of

                 Colwood House Medical Publications (UK) Limited

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


                                    RAKISONS

                                 Clements House

                              14/18 Gresham Street

                                 London EC2V 7JE

                         Telephone: +44 (0)171 367 8000

                            Fax: +44 (0)171 367 8001

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                               TABLE OF CONTENTS

1   DEFINITIONS..............................................................1
2   AGREEMENT FOR SALE.......................................................7
3   CONSIDERATION............................................................7
4   DEFERRED CONSIDERATION..................................................10
5   NET ASSETS..............................................................13
6   COMPLETION..............................................................15
7   WARRANTIES AND INDEMNITY BY THE VENDORS.................................18
8   ASSIGNMENT AND SUCCESSIONS..............................................19
9   RESTRICTIVE AGREEMENT...................................................20
10  ANNOUNCEMENTS...........................................................22
11  COSTS...................................................................22
12  COMMUNICATIONS..........................................................22
13  INVALIDITY..............................................................23
14  PROPER LAW..............................................................23
15  REsCISSION..............................................................24
SCHEDULE 1 - VENDORS' HOLDINGS..............................................25
SCHEDULE 2 - DETAILS OF THE COMPANY.........................................26
SCHEDULE 3 - WARRANTIES.....................................................27

   1   ACCOUNTS.............................................................27
   2   CORPORATE MATTERS....................................................28
   3   TAXATION.............................................................30
   4   FINANCE..............................................................41
   5   TRADING..............................................................43
   6   ENVIRONMENTAL WARRANTIES.............................................49
   7   EMPLOYMENT...........................................................50
   8   ASSETS...............................................................52
   9   PROPERTIES...........................................................54
SCHEDULE 4 - DEED OF INDEMNITY..............................................56
SCHEDULE 5 - EARNOUT PROTECTION.............................................63
SCHEDULE 6 - LIMITATIONS OF LIABILITY.......................................66

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DATED:
PARTIES:

1.                "Vendors":   the persons whose names and addresses are set out
                               in column 1 of Schedule 1;
2.                "Purchaser": Healthworld Holdings Limited (registered number
                               3458882) whose registered office is at 1 Thames
                               Street, Windsor, Berkshire, SL4 1PL

                  OPERATIVE PROVISIONS

1                 DEFINITIONS

1.1               In this agreement, including the Schedules (other than 
                  Schedule 4), the following words and expressions have the
                  meanings stated, unless they are inconsistent with the
                  context:

                  "Actual Net Assets"

                  the issued share capital of the Company plus or minus the
                  amount standing to the credit of or debited to reserves
                  (including profit and loss account), as shown in the
                  Completion Accounts.

                  "Agreed Form"

                  a form agreed between the parties, a copy of which has been
                  initialled for the purpose of identification by their
                  respective solicitors.

                  "April 1998 Profits"

                  (pound)642,055.

                  "Associate"

                  (in relation to an individual):
                  any relative, that is any issue, spouse, brother, sister or
                  parent;

                  any company which is, or may be, directly or indirectly
                  controlled (within the meaning given in ICTA s840) by the
                  individual or any relative, or by any two or more of them;

                  (in relation to a company) any Subsidiary or holding company
                  of the company, and any other Subsidiary of any holding
                  company of the company, "holding company" having the same
                  meaning as in CA s736; and for this purpose a company is
                  controlled by one or more persons if he or they can exercise
                  more than fifty per cent of the voting rights in it.

                  "Bonus"

                  the amount including employer and employee national insurance
                  and tax to be paid pursuant to clause 4.9.10.

                                      1

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                  "Business Days"

                  a day (other than a Saturday or Sunday or a UK public holiday)
                  on which clearing banks are open for business in England.

                  "CA"

                  Companies Act 1985.

                  "CAA"

                  Capital Allowances Act 1990.

                  "Companies Acts"

                  CA, the former Companies Acts (within the meaning of CA
                  s735(1)) and the Companies Act 1989.

                  "Company"

                  Colwood House Medical Publications (UK) Limited (a company
                  incorporated in England and Wales) details of which are set
                  out in Schedule 2.

                  "Completion"

                  completion of the purchase of the Shares in accordance with
                  clause 6.

                  "Completion Accounts"

                  the balance sheet of the Company as at 30 June 1998 and the
                  profit and loss account for the period from the Last Accounts
                  Date to 30 June 1998, prepared in accordance with clause 5.2.

                  "Completion Date"

                  the date of this agreement.

                  "Consideration"

                  the aggregate of the Initial Consideration, the First Deferred
                  Payment and the Second Deferred Payment.

                  "Deed of Indemnity"

                  a deed in the form set out in Schedule 4.

                  "Deferred Consideration"

                  the First Deferred Payment and the Second Deferred Payment.

                  "Deferred Consideration Loan Note Instrument"

                  the loan note instrument to be guaranteed by Bank of Scotland
                  for payment of the First Deferred Payment and/or the Second
                  Deferred Payment in the Agreed Form.

                  "Deficit"

                  the amount by which the Actual Net Assets are less than the
                  Relevant Net Assets.

                                       2

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                  "Disclosure Letter"

                  the disclosure letter, of today's date, from the Warrantors
                  to the Purchaser but excluding the accompanying documents.

                  "FA"

                  Finance Act.

                  "FRS"

                  a financial reporting standard issued or adopted by The
                  Accounting Standards Board Limited.

                  "First Deferred Payment"

                  a sum equal to the lower of (i) (pound)4.5 x (the amount that
                  the Relevant 1999 Profits exceed the April 1998 Profits) -
                  (pound)18,000 and (ii) (pound)982,000

                  "First Tranche Loan Notes"

                  the loan notes to be issued pursuant to the First Tranche Loan
                  Note Instrument.

                  "First Tranche Loan Note Instrument"

                  the loan note instrument guaranteed by Bank of Scotland for
                  payment of part of the Initial Consideration in the Agreed
                  Form.

                  "Freehold Property"

                  the freehold property known as The Mitfords, Basingstoke Road,
                  Three Mile Cross, Reading, Berkshire RG7 1AT registered at HM
                  Land Registry under title number BK236792.

                  "ICTA"

                  Income and Corporation Taxes Act 1988.

                  "Initial Consideration"

                  that part of the Consideration payable in accordance with
                  clause 3.1

                   "Intellectual Property Rights"

                   a patent, patent application, know-how, trade or service mark
                  (whether registered or unregistered), trade or service mark
                  application, trade name and logo, registered design, design
                  right, copyright, right in databases or other intellectual,
                  industrial or commercial right similar to any of the foregoing
                  in any jurisdiction.

                  "IHTA"

                  Inheritance Tax Act 1984.

                  "Joint Account"

                  the account with Bank of Scotland number 00405315 sort code
                  12-01-03 opened in the joint names of the Purchaser's
                  Solicitors and the Vendors' Solicitors and designated client
                  account re the Purchaser and the Vendors

                                       3

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                  "Joint Account Letter"

                  the letter from the Vendors and the Purchaser to the
                  Vendors' Solicitors and the Purchaser's Solicitors and in the
                  Agreed Form.

                  "Last Accounts"

                  the audited balance sheet of the Company, as at the Last
                  Accounts Date, and the audited profit and loss account of the
                  Company for the year ended on the Last Accounts Date and the
                  directors' report and notes.

                  "Last Accounts Date"

                  30 April 1998.

                  "Leasehold Property"

                  the leasehold property known as Building M, Parkside Business
                  Park, 15 Headley Road, Woodley, Reading, subject to the terms
                  of the lease dated 1 August 1996 made between Stephen Russell
                  Hicks, David John Hicks and John Leslie Hicks (1) and the
                  Company (2).

                  "Loan Notes"

                  the First Tranche Loan Notes, Second Tranche Loan Notes and/or
                  the Third Tranche Loan Notes.

                  "Planning Acts"

                  as defined in the Town and Country Planning Act 1990, s336.

                  "Pre-Completion Dividends"

                  the two interim dividends totalling(pound)700,000 in respect
                  of the financial year ending 30 April 1999.

                  "1998 Profits"

                  the profits of the Company for the 6 months ended 31 December
                  1998 adjusted in accordance with clause 4.11.

                  "1999 Profits"

                  the profits of the Company for the 12 months ended 31 December
                  1999, adjusted in accordance with clause 4.11.

                  "2000 Profits"

                  the profits of the Company for the 12 months ended 31 December
                  2000, adjusted in accordance with clause 4.11.

                  "2001 Profits"

                  the profits of the Company for the 6 months ended 30 June
                  2001, adjusted in accordance with clause 4.11.

                  "Property"

                  the Freehold Property and the Leasehold Property.

                                       4

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                  "Purchaser's Accountants"

                  Arthur Andersen of Abbots House, Abbey Street, Reading,
                  RG1 3BD.

                  "Purchaser's Group"

                  the Purchaser and any Associates of the Purchaser.

                  "Purchaser's Solicitors"

                  Rakisons, Clements House,14/18 Gresham Street, London EC2V
                  7JE.

                  "Relevant Net Assets"
                  (pound)700,000, being the provisional value of the Actual Net
                  Assets of the Company.

                  "Relevant 1999 Profits"

                  two thirds of the aggregate of the 1998 Profits and 1999
                  Profits (as the same is stated in the certificate referred to
                  in clause 4.2.1 and as determined in accordance with
                  clause 4).

                  "Relevant 2001 Profits"

                  the aggregate of:
                  the 1998 Profits;
                  the 1999 Profits;
                  the 2000 Profits; and
                  the 2001 Profits
                  (as the same is stated in the  certificate  referred to in
                  clause 4.2.2 and as determined in accordance with clause 4)
                  divided by 3.

                  "SSAP"

                  a statement of standard accounting practice published by the
                  former Accounting Standards Committee or the present
                  Accounting Standards Board Limited.

                  "Second Deferred Payment"

                  a sum equal to the lower of (i) 6.9 multiplied by the amount
                  that the Relevant 2001 Profits exceeds the April 1998 Profits,
                  less the First Deferred Payment and (ii) the sum of
                  (pound)3,482,000 less the First Deferred Payment.

                  "Second Tranche Loan Notes" 

                  loan notes to be issued in the form of the Deferred 
                  Consideration Loan Note Instrument in respect of the 
                  First Deferred Payment. 

                  "Service Agreements"

                  the service agreements for each of the Vendors in the Agreed
                  Form.

                  "Shares"

                  the 10,000 issued ordinary shares of (pound)1.00 each
                  of the Company.

                                       5

<PAGE>

                  "Subsidiary"

                  a subsidiary as defined in CA s736 (as substituted by section
                  144(1) Companies Act 1989).

                  "Taxation"

                  the same meaning as in the Deed of Indemnity.

                  "TCGA"

                  Taxation of Chargeable Gains Act 1992 

                  "TMA"

                  Taxes Management Act 1970.

                  "Third Tranche Loan Notes"

                  loan notes to be issued in the form of the Deferred
                  Consideration Loan Note Instrument in respect of the Second
                  Deferred Payment.

                  "U.K. GAAP"

                  UK generally accepted accounting principles applied on a
                  consistent basis.

                  "VATA"

                  Value Added Tax Act 1994.

                  "Vendors' Accountants"

                  Kew Ford & Co, 60 High Street, Chobham, Surrey, GU24 8AA or
                  such other accountants as the Vendors (or a majority of them)
                  may notify to the Purchaser in writing from time-to-time.

                  "Vendors' Solicitors"

                  Cameron McKenna, Mitre House, 160 Aldersgate Street, London,
                  EC1A 4DD

                  "Warranties"

                  the warranties set out in clause 7.1 and in Schedule 3.

                  "Warrantors"

                  Clive Davies and Stephen Cantle whose addresses are set out in
                  column 1 of Schedule 1.

                  "Warranty Claim"

                  a claim made by the Purchaser for breach of any of the
                  Warranties or a claim made by the Purchaser under the Deed of
                  Indemnity.

1.2               Unless it is inconsistent with the context a reference to a
                  statutory provision includes a reference to:

1.2.1             any statutory amendment, modification, consolidation or
                  re-enactment (whether before or after the date of
                  this agreement);

1.2.2             any statutory instruments or subordinate legislation or orders
                  made pursuant to the statutory provision;

                                       6

<PAGE>

1.2.3             statutory provisions of which the statutory provision is an
                  amendment, modification, consolidation or re-enactment;

1.2.4             but does not include a substituted provision (unless otherwise
                  stated).

1.3               A reference to the Vendors or the Warrantors includes, where
                  appropriate, their personal representatives.

1.4               Words denoting the singular include the plural and vice
                  versa; words denoting one gender include all genders; words
                  denoting persons include corporations and vice versa.

1.5               Unless otherwise stated, a reference to a clause or Schedule
                  is a reference to a clause of, or Schedule to, this agreement.

1.6               Clause headings in this agreement and in the Schedules are
                  for ease of reference only and do not affect the construction
                  of any provision.

2                 AGREEMENT FOR SALE

2.1               Subject to the terms and conditions of this agreement, the
                  Vendors shall sell with full title guarantee and the Purchaser
                  shall purchase the Shares with all rights attaching to them
                  (other than the right to the Pre-completion Dividends), with
                  effect from the date of this agreement.

2.2               The Vendors waive any pre-emption rights they may have in
                  relation to any of the Shares, whether under the articles of
                  association of the Company or otherwise.

3                 CONSIDERATION

3.1               The Initial Consideration for the Shares shall (subject to
                  adjustment in accordance with the provisions of clause 5) be
                  the sum of (pound)3,240,000 which shall be paid or satisfied
                  in cash and First Tranche Loan Notes to be issued at
                  Completion in the amounts set out opposite the Vendors'
                  respective names in sub-columns (a) and (b) of column 3 of
                  Schedule 1.

3.2               The balance of the Consideration, being the First Deferred
                  Payment and the Second Deferred Payment, shall be paid in
                  accordance with clause 4.

3.3               The Consideration shall, in any event, not exceed
                  (pound)6,722,000

3.4               The Vendors shall share the Consideration in the percentages
                  set out opposite their respective names in column 4 of
                  Schedule 1.

3.5               The Purchaser shall not be entitled to set off from the\
                  Initial Consideration and, save as provided in clause
                  3.6, the Purchaser shall not be entitled to set-off from the
                  First Deferred Payment and/or Second Deferred Payment any
                  amount claimed by it under the Warranties or under the Deed
                  of Indemnity.

                                       7

<PAGE>

3.6               In the event that, prior to the date on which any amount of
                  the First Deferred Payment and/or Second Deferred Payment is
                  payable or paid and/or prior to the date on which all the Loan
                  Notes are redeemed, the Purchaser shall have given written
                  notice to the Warrantors of a Warranty Claim in accordance
                  with this agreement, the following provisions shall apply:

3.6.1             to the extent that any such claim or claims shall have been
                  settled (as defined in clause 3.6.4) but shall
                  not have been satisfied by a Warrantor prior to such date the
                  Purchaser shall be entitled to treat its obligations to issue
                  or redeem the relevant Loan Notes otherwise due to be issued
                  or redeemed to that Warrantor on that date as being reduced
                  pro tanto by the amount of such claim or claims;

3.6.2             to the extent that any such claim shall not have been settled
                  (as defined in clause 3.6.4) but provided that (a) such claim
                  is made in accordance with the terms of Schedule 6 and (b) a
                  leading counsel of more than 10 years' call chosen by
                  agreement between the Vendors' Solicitors and the Purchaser's
                  Solicitors within 14 days of such claim being made or, in
                  default of agreement within 7 days after request by the
                  Vendors' Solicitors or the Purchaser's Solicitors, nominated
                  at the instance of any party by the Chairman of the Bar
                  Council shall have, as soon as practicable after being
                  instructed, given a written opinion that such claim appears to
                  be genuine and such claim will on a balance of probabilities
                  succeed or such claim will have a greater than 50% chance of
                  success (a "Qualifying Claim") then: (a) if the Purchaser
                  intends to exercise a right of set-off over a Loan Note which
                  is yet to be issued an amount equal to the total amount so
                  claimed by the Purchaser from the relevant Warrantor pursuant
                  thereto (in so far as it does not exceed the amount of the
                  First Deferred Payment and/or Second Deferred Payment
                  otherwise payable to that Warrantor) shall be deducted from
                  the amount of the First Deferred Payment and/or the Second
                  Deferred Payment and paid from the Joint Account and (to the
                  extent that the Joint Account is insufficient and no Loan
                  Notes (other than First Tranche Loan Notes) are in issue, by
                  the Purchaser or otherwise to the extent the Joint Account is
                  insufficient and Loan Notes in respect of the Deferred
                  Consideration are in issue as provided in sub-paragraph (b)
                  below of this clause on the date on which the balance of the
                  First Deferred Payment and/or Second Deferred Payment would
                  otherwise be payable into an interest-bearing deposit account
                  with a UK clearing bank in the joint names of the Vendors'
                  Solicitors and the Purchaser's Solicitors (whose respective
                  partners will be the sole persons authorised to operate such

                                        8

<PAGE>

                  account) (an "Escrow Account") to be dealt with in accordance
                  with clause 3.6.3 and no withdrawals shall be made from such
                  account pending the settlement of such Qualifying Claim or (b)
                  if the Purchaser notifies a Warrantor in writing that he
                  intends to exercise a right of set-off over Loan Notes (other
                  than First Tranche Loan Notes) which have been issued and
                  prior to the guarantee in respect of such Loan Notes expiring
                  Loan Notes in a nominal amount equal to the total amount so
                  claimed by the Purchaser from the relevant Warrantor pursuant
                  thereto shall be lodged with the Purchaser's Solicitors who
                  shall hold the same jointly to the order of the Vendors'
                  Solicitors and the Purchaser's Solicitors save that if such
                  certificates are not lodged within 10 Business Days of such
                  notice from the Purchaser the said Loan Notes shall be
                  transferred by the relevant Warrantor into the names of the
                  Vendors' Solicitors and the Purchaser's Solicitors to be held
                  in their joint names pending the settlement of such Qualifying
                  Claim and in that regard the relevant Warrantor hereby
                  appoints the Purchaser as his attorney to do all acts
                  reasonably required to perform such transfer

                  PROVIDED THAT if the relevant claim has not been settled by no
                  later than twenty-one days prior to the expiry of the
                  guarantee contained in the relevant Loan Note then the
                  Purchaser and the relevant Warrantor shall procure (in so far
                  as they are able) that a demand is made for repayment of such
                  Loan Notes and as soon as practicable thereafter a demand is
                  made on Bank of Scotland pursuant to the guarantee and any
                  monies received pursuant to such demand shall be paid into the
                  Escrow Account to be dealt with in accordance with
                  sub-paragraph (a) of this clause.

3.6.3             as soon as possible following the settlement (as defined in
                  clause 3.6.4) of the claim or claims the relevant Warrantor
                  and the Purchaser shall instruct the Vendors' Solicitors and
                  the Purchaser's Solicitors to:

                  (a) either make payment out of the Escrow Account to the
                      Purchaser or cancel (as appropriate) the relevant Loan
                      Notes of a sum equal to the amount for which the claim or
                      claims aforesaid shall have been settled (as defined in
                      clause 3.6.4) in favour of the Purchaser together with a
                      proportion of the total interest earned on the monies
                      deposited in the said account from the date of payment
                      into the Escrow Account until the date of payment out
                      (being that proportion which the sum payable to the
                      Purchaser out of the said account pursuant to this
                      clause bears to the total sums paid into the said account
                      pursuant to clause 3.6.2);

                                       9

<PAGE>

                  (b) as to the balance of the monies standing to the credit of
                      the said account, (less the amount referable to any
                      unsettled Qualifying Claim to which the provisions of
                      clause 3.6.2 shall continue to apply) pay the same to the
                      relevant Warrantor together with interest calculated on
                      the basis set out in paragraph (a) above or return or
                      transfer to the relevant Warrantor the equivalent amount
                      of the Loan Notes (if applicable). 



3.6.4             A claim shall be regarded as settled for the purposes of this
                  clause if subject to the terms of Schedule 6 either:

                  (a) a Warrantor and the Purchaser (or their respective
                      solicitors) shall so agree in writing; or

                  (b) a court of competent jurisdiction has established the
                      liability of the Warrantors and awarded in respect of the
                      quantum of the claim and no right of appeal lies in
                      respect of such judgment or the parties are debarred
                      whether by the passage of time or otherwise from
                      exercising any such right of appeal or the other party
                      has stated in writing that it does not wish to exercise
                      its right of appeal.

4                 DEFERRED CONSIDERATION

4.1               The Purchaser shall procure that the auditors (from time to
                  time) of the Company shall:

4.1.1             in addition to preparing the audited accounts of the Company
                  for the financial year ended 31 December 1999 and no later
                  than 31 March 2000, prepare a certificate of the Relevant 1999
                  Profits;

4.1.2             as soon as practicable following 30 June 2001 but no later
                  than 30 September 2001, prepare a certificate of the Relevant
                  2001 Profits.

4.2               The certificates delivered pursuant to this clause 4.1 above
                  shall be binding on all parties, unless within 15 Business
                  Days of the delivery of the same by the auditors, any of the
                  Vendors notifies the Purchaser in writing of any matters of
                  disagreement with the same in sufficient detail to enable the
                  Purchaser to consider them.

4.3               In the event that a notice is served under clause 4.2 the
                  parties shall attempt to resolve the dispute, but in default
                  of agreement as to the amount of the Relevant 1999 Profits
                  and/or the Relevant 2001 Profits within 15 Business Days of
                  such notice being delivered, the dispute shall be determined
                  by a single independent accountant to be appointed jointly by
                  the parties, or in default of agreement, within 5 Business
                  Days after request by the Vendors or

                                       10

<PAGE>

                  the Purchaser, appointed (on the application of any of the
                  parties) by the President for the time being of the Institute
                  of Chartered Accountants in England and Wales.

4.4               The said accountant shall be instructed (as appropriate):

4.4.1             to give his decision on the adjustments in dispute referred
                  to him as soon as practicable;

4.4.2             to ensure that his decision is consistent with the
                  requirements of this clause 4 and the principles and bases
                  in this agreement as relevant; and

4.4.3             to consider only the adjustments in dispute.

4.5               The said accountant shall act as expert and not as an
                  arbitrator and his decision on any matter shall be
                  final and binding on the Vendors and the Purchaser. His fees
                  shall be payable between the Vendors and the Purchaser as may
                  be determined by him.

4.6               The parties shall each procure (so far as they are able)
                  that they, their respective accountants and the Company will
                  afford each other and their respective accountants and (if
                  applicable) any independent accountant appointed pursuant to
                  clause 4.4 all facilities and full and prompt access to the
                  Company's premises, papers, books of account, records,
                  returns, directors and employees and such other relevant
                  documents (including working papers prepared by the
                  Purchaser's Accountants which support their calculations) as
                  are in their respective possession to enable the determination
                  of the Relevant 1999 Profits and/or the Relevant 2001 Profits
                  in accordance with this clause 4. 

4.7               Subject to clause 3.5, the Purchaser shall enter into the
                  Deferred Consideration Loan Note Instrument and pay to the
                  Vendors the First Deferred Payment in the form of definitive
                  certificates in respect of the Second Tranche Loan Notes in
                  the percentages set out opposite their respective names in
                  column 4 of Schedule 1 on the later of:

4.7.1             14 April 2000;

4.7.2             15 days after Healthworld Corporation files the applicable
                  regulatory filing with the Securities Exchange Commission or
                  its equivalent for the financial year ended 31 December 1999
                  which shall be deemed to be no later than 30 June 2000;

4.7.3             the certificate becoming binding under clause 4.2; and

4.7.4             the resolution of any disagreement in respect of that
                  certificate in accordance with clauses 4.2 to 4.6.

4.8               Subject to clause 3.5, the Purchaser shall enter into the
                  Deferred Consideration Loan Note Instrument and pay
                  to the Vendors the Second

                                       11

<PAGE>

                  Deferred Payment in the form of definitive certificates in
                  respect of the Third Tranche Loan Notes in the percentages set
                  opposite their respective names in column 4 of Schedule 1
                  within 15 days of the later of:

4.8.1             the certificate becoming binding under clause 4.2; and

4.8.2             the resolution of any disagreement in respect of the said
                  certificate in accordance with clauses 4.2 to 4.6.

4.9               In their determination of the Relevant 1999 Profits and/or
                  the Relevant 2001 Profits referred to in this
                  clause 4, the auditors shall adjust the relevant profits in
                  the following manner:

4.9.1             so as to adopt bases and policies of accounting applied
                  for the purposes of the Last Accounts;

4.9.2             to exclude any assets or profits or costs or liabilities
                  or losses incurred in respect of any acquisitions of any
                  company or business by the Purchaser or any of its Associates
                  after Completion;

4.9.3             to exclude any profits or losses of a capital nature arising
                  on a disposal of fixed assets, investments, plant or other
                  assets of the Company;

4.9.4             to exclude any payment made or liability incurred by the
                  Company by virtue of a breach of the provisions of Schedule 5;

4.9.5             before deducting any corporation tax;

4.9.6             save as provided in clause 4.9.10, after deducting all and any
                  accrued salaries, bonuses or other incentive payments due to
                  management and employees of the Company;

4.9.7             save as provided in clause 4.9.12, before deducting any
                  interest;

4.9.8             to exclude any liability incurred by the Company which
                  relates to payments due and payable by a member of the
                  Purchaser's group (other than the Company);

4.9.9             to exclude any liability of the Company in respect of the
                  payment or funding of the Pre-Completion Dividends;

4.9.10            to exclude any liability incurred by the Company in respect of
                  the bonus (including employer and employee national insurance
                  and tax totalling the sum of (pound)60,000) paid to Winifred
                  McFadzean immediately following Completion;

4.9.11            to exclude any liability of the Company in relation to the
                  Leasehold Property;

4.9.12            to include any interest on any borrowings incurred by the
                  Company (other than to fund the Pre-Completion Dividends or
                  the Bonus) whether from the Purchaser or otherwise for the
                  period from 1 July 1998 to 31 December 1998 with the consent
                  of the Vendors and in the event that such monies are borrowed
                  from the

                                       12

<PAGE>

                  Purchaser or its Associates the interest shall be deemed to
                  accrue at an annualised rate equal to LIBID rate as the same
                  may fluctuate from time to time. but subject to the above
                  matters, so as to comply with UK GAAP.

4.10              If the Purchaser shall not have paid the First Deferred
                  Payment and/or the Second Deferred Payment on or before the
                  due date for payment specified in clauses 4.7 or 4.8 (as the
                  case may be) then without prejudice to the Vendors' rights,
                  interest shall accrue on the amount unpaid at the rate of 3
                  per cent per annum over the base rate of Bank of Scotland from
                  time to time calculated on a daily basis and to be paid at the
                  same time as the outstanding balance of the First Deferred
                  Payment and/or the Second Deferred Payment to which it relates
                  is paid.

5                 NET ASSETS

5.1               Immediately following Completion the Purchaser shall procure
                  that the Purchaser's Accountants shall prepare as soon as
                  practicable and in any event within 30 Business Days after the
                  date of Completion draft Completion Accounts and a draft
                  statement of the Actual Net Assets and the Deficit (if any)
                  and submit the same to the Vendors and the Vendors'
                  Accountants together with any relevant working papers which
                  support their calculations.

5.2               The Completion Accounts shall (subject as provided in this
                  agreement):

5.2.1             be prepared as if the period from the Last Accounts Date to
                  30 June 1998 was a financial period of the Company;

5.2.2             show a true and fair view of the assets and liabilities of the
                  Company as a whole as at 30 June 1998 and of the profits of
                  the Company as a whole for the period ended on 30 June 1998;

5.2.3             adopt bases and policies of accounting applied for the
                  purposes of the Last Accounts.

5.3               The Vendors shall procure that the Vendors' Accountants review
                  the draft Completion Accounts and the draft statement of the
                  Actual Net Assets and the Deficit delivered by the Purchaser's
                  Accountants pursuant to clause 5.1 and, within 15 Business
                  Days of the delivery of those items (or such longer period as
                  the Vendors and the Purchaser may agree in writing), notify
                  the Purchaser and the Purchaser's Accountants in writing of
                  any matters of disagreement with those drafts in sufficient
                  detail to enable the Purchaser's Accountants to consider them
                  and, in the absence of any such written notification within
                  that period, the drafts shall be deemed to be agreed by the
                  Vendors whereupon the draft Completion Accounts shall
                  constitute the Completion Accounts and the

                                       13

<PAGE>

                  Actual Net Assets and the Deficit contained in the draft
                  statements shall constitute the Actual Net Assets and the
                  Deficit.

5.4               If within 25 Business Days of the delivery of any notification
                  referred to in clause 5.3, there remains any outstanding
                  dispute in relation to the draft Completion Accounts or the
                  draft statements of the Actual Net Assets and the Deficit,
                  such dispute shall be referred to a single independent
                  chartered accountant for final settlement, such accountant to
                  be nominated jointly by the Vendors and the Purchaser or,
                  failing such nomination within 10 Business Days after request
                  by the Vendors or the Purchaser, nominated at the request of
                  either party by the President for the time being of the
                  Institute of Chartered Accountants in England and Wales. The
                  said accountant shall be instructed (as appropriate):

5.4.1             to give his decision on the adjustments in dispute referred to
                  him as soon as practicable;

5.4.2             to ensure that his decision shall be consistent with the
                  requirements of this clause and the principles and bases in
                  this agreement as relevant; and

5.4.3             only to consider the adjustments in dispute specifically
                  referred to him.

                  The said accountant shall act as expert and not as arbitrator
                  and his decision on any matter (in the absence of manifest
                  error) shall be final and binding on the parties. His fees
                  shall be payable between the Vendors and the Purchaser as may
                  be determined by him.

5.5               The Vendors shall repay to the Purchaser a sum equivalent to
                  the Deficit within 2 Business Days following the determination
                  of the Deficit in accordance with this clause 5 and the
                  Vendors shall pay interest (calculated on a daily basis) on
                  any unpaid balance of such sum (from time to time) until
                  payment of such sum in full at 3% above the base rate of Bank
                  of Scotland from time to time. The Consideration shall be
                  adjusted by the amount of the Deficit.

5.6               The parties shall each procure (so far as they are able) that
                  they, their respective accountants and the Company will afford
                  each other and their respective accountants and (if
                  applicable) any independent accountant appointed pursuant to
                  clause 5.4 all facilities and full and prompt access to the
                  Company's premises, papers, books of account, records,
                  returns, directors and employees and such other relevant
                  documents (including working papers prepared by the
                  Purchaser's Accountants which support their calculations) and
                  as are in their respective possession or control to enable the
                  determination of the Completion Accounts, the Actual Net
                  Assets and the Deficit in accordance with this clause 5.

                                       14

<PAGE>

6                 COMPLETION

6.1               Completion shall take place at the offices of the Purchaser's
                  Solicitors when all the transactions mentioned in clauses 6.2
                  to 6.7 shall take place.

6.2               The Vendors shall deliver to the Purchaser:

6.2.1             duly completed and signed transfers in favour of the
                  Purchaser, or as it directs, of the Shares, together with the
                  relative share certificates;

6.2.2             the Deed of Indemnity duly executed by the Vendors;

6.2.3             the resignation of Anthony Clive Davies as secretary of the
                  Company including an acknowledgement stating that he has no
                  claim of any nature whatsoever against the Company arising out
                  of this resignation as secretary in the Agreed Form;

6.2.4             the resignation of the auditors of the Company confirming that
                  they have no outstanding claims and containing a statement
                  under CA s394 (1) that there are no such circumstances as are
                  mentioned in that section;

6.2.5             a power of attorney in the Agreed Form executed by each of the
                  Vendors in favour of the Purchaser empowering the Purchaser to
                  exercise the Vendors' rights as shareholders of the Company
                  pending the stamping and registration of the transfers
                  referred to in clause 6.2.1;

6.2.6             a deed of termination in the Agreed Form in respect of the
                  shareholders agreement dated 25 November 1997 between the
                  Vendors and the Company.

6.3               There shall be delivered (in the case of the statutory books,
                  certificates of incorporation and incorporation on change of
                  name and common seal referred to in clause 6.3.1, current
                  statements and reconciliation referred to in clause 6.3.3 and
                  the written confirmations referred to clause 6.3.4) or made
                  available (in the case of the remaining items of this clause
                  6.3) to the Purchaser:

6.3.1             the statutory books, books of account and documents of record
                  of the Company, complete and up-to-date, and its certificate
                  of incorporation, certificate of incorporation on change of
                  name and common seals;

6.3.2             all the current cheque books of the Company, together with
                  current statements of all its accounts to a date within 5
                  Business Days of Completion and a reconciliation to
                  Completion, and the appropriate forms to amend, in such manner
                  as the Purchaser requires, the mandates given to the relevant
                  bank;

6.3.3             written confirmation in the Agreed Form from the Vendors that
                  there are no subsisting guarantees given by the Company in
                  favour of the Vendors or any of their respective Associates
                  and that, after compliance with clause 6.4, none of the
                  Vendors or their respective Associates will be indebted to the
                  Company.

                                       15

<PAGE>

6.4               The Vendors shall repay, or procure to be repaid, all
                  monies owing by them and/or their Associates at Completion to
                  the Company, whether due for payment or not.

6.5               The Warrantors shall enter into their respective Service
                  Agreements.

6.6               Board meetings of the Company shall be held at which:

6.6.1             such persons as the Purchaser nominates are appointed
                  additional directors;

6.6.2             the transfers referred to in clause 6.2.1 are approved
                  (subject to stamping);

6.6.3             the resignations referred to in clauses 6.2.3 and 6.2.4 are
                  submitted and accepted;

6.6.4             the accounting reference date of the Company shall be changed
                  to 31 December; and

6.6.5             the registered office of the Company shall be changed to
                  1 Thames Street, Windsor, Berkshire, SL4 1PL.

6.6.6             an extraordinary general meeting is convened to approve the
                  adoption of new articles of association in the Agreed Form.

6.7               At Completion the Purchaser shall lend (interest free) to the
                  Company the amount of (pound)700,000 and the Vendors shall
                  procure that the Company shall pay immediately the
                  Pre-Completion Dividends.

6.8               Upon completion of the matters referred to in clauses 6.2 to
                  6.7 the Purchaser shall deliver to the Vendors' Solicitors:
                  the Initial Consideration:

                  (a) in cleared funds in respect of the cash element to the
                      bank account of the Vendors' Solicitors (Lloyds Bank Plc,
                      39 Threadneedle Street, London, account number 0230949,
                      sort code 30:00:09); and

                  (b) by way of definitive certificates in respect of the
                      relevant amount of the First Tranche Loan Notes;

6.8.2             the Deed of Indemnity duly executed by the Purchaser;

6.8.3             the Service Agreements duly executed by the Company;

6.8.4             a letter duly executed by the Bank of Scotland in the Agreed
                  Form; and board minutes of the Purchaser approving, inter
                  alia, the acquisition of the Company.

6.9               At Completion the Purchaser shall pay the sum of
                  (pound)1,000,000 into the Joint Account and the Vendors and
                  the Purchaser shall issue irrevocable written instructions
                  to the Vendors' Solicitors and the Purchaser's Solicitors
                  (respectively) to operate the Joint Account in accordance with
                  the terms of the Escrow Letter.

                                       16

<PAGE>

6.10              The Warrantors and the Purchaser shall exercise all voting
                  rights and other powers of control available to them in
                  relation to the Company so as to procure (insofar as they are
                  able to do so by the exercise of those rights and powers)
                  that, within 45 days of 30 June and 31 December (a "Dividend
                  Date") in each year following Completion and subject to Part
                  VIII CA and to the provisions of this clauses 6.12 and 6.13,
                  an amount equal to the cash generated from trading profits of
                  the Company after corporation tax payments are distributed to
                  the Purchaser by way of dividend.

6.11              Subject to clauses 6.12 and 6.13, the Purchaser shall issue an
                  irrevocable direction to the Company that the cash payable to
                  the Purchaser pursuant to clause 6.10 is paid to the Joint
                  Account.

6.12              The maximum aggregate amount comprised in the Joint Account
                  shall not exceed (pound)3,500,000.

6.13              Dividends and payments shall only be made under clause 6.10
                  until payment of the First Deferred Payment and the Second
                  Deferred Payment (if any) has been made in accordance with
                  clauses 4.7 and 4.8, respectively.

6.14              All interest accruing on the Joint Account shall belong to the
                  Purchaser. No payment shall be made on the Joint Account or
                  instructions given to Bank of Scotland in respect of the Joint
                  Account except in accordance with the Joint Account Letter
                  and/or clause 3.6.2.

6.15              Subject to clause 3.6.2, as soon as practicable following the
                  relevant certificate becoming binding under clause 4.2 or
                  the resolution of any disagreement in respect of the said
                  certificate in accordance with clauses 4.2 to 4.6 for the
                  purposes of each of the Relevant 1999 Profits and the
                  Relevant 2001 Profits, the parties shall procure that a copy
                  of each certificate is delivered to the Vendors' Solicitors
                  and the Purchaser's Solicitors setting out the amount of
                  monies which shall be paid by way of the First Deferred
                  Payment and the Second Deferred Payment respectively and the
                  parties shall procure and shall irrevocably authorise the
                  Vendors' Solicitors and the Purchaser's Solicitors to
                  jointly instruct the Bank to pay from the Joint Account to
                  the cash collateral account designated by Bank of Scotland
                  as the "Deferred Consideration Loan Note Guarantee Cash
                  Collateral Account" the amount stated in the relevant
                  certificate.

6.16              The Purchaser shall not be obliged to complete the purchase
                  of any of the Shares unless the purchase of all the Shares is
                  completed in accordance with this agreement.

                                       17
<PAGE>

6.17              Immediately following Completion the Purchaser shall make
                  available to the Company by way of interest free loan the
                  amount of (pound)60,000 to enable the Company to pay the
                  Bonus.

7                 WARRANTIES AND INDEMNITY BY THE VENDORS

7.1               Each of the Warrantors jointly and severally warrant to the
                  Purchaser that:

7.1.1             each Vendor will perform his obligations under this agreement
                  and (where applicable) the Deed of Indemnity and that each of
                  this agreement and (where applicable) the Deed of Indemnity
                  constitute, or when executed will constitute, binding
                  obligations on him in accordance with their respective terms;

7.1.2             save as fairly set out in the Disclosure Letter, the
                  Warranties are true and accurate;

7.1.3             the contents of the specific disclosures in the Disclosure
                  Letter are true and accurate.

7.2               Each of the Warranties is without prejudice to any other
                  Warranty and, except where expressly stated otherwise, no
                  clause governs or limits the extent or application of the
                  Warranties.

7.3               Save as provided otherwise in this agreement, the rights and
                  remedies of the Purchaser in respect of a breach of the
                  Warranties shall not be affected by Completion by
                  investigations made by or on behalf of the Purchaser into the
                  affairs of the Company by the Purchaser rescinding or failing
                  to rescind this agreement, or failing to exercise or delaying
                  the exercise of any right or remedy, or, save as aforesaid, by
                  any other event or matter, except a specific and duly
                  authorised written waiver or release, and no single or partial
                  exercise of any right or remedy shall preclude any further or
                  other exercise.

7.4               Save in the case of fraud none of the information supplied\
                  by the Company or its professional advisers to the Vendors, or
                  their agents, representatives or advisers, in connection with
                  the Warranties and the contents of the Disclosure Letter, or
                  otherwise in relation to the business or affairs of the
                  Company, shall be deemed a representation, warranty or
                  guarantee of its accuracy by the Company to the Vendors, and
                  the Vendors waive any claims against the Company which they
                  might otherwise have in respect of it.

7.5               In relation to any Warranty which refers to the awareness,
                  knowledge, information or belief of the Warrantors the
                  Warrantors shall be deemed to have made all reasonable
                  enquiries into the subject matter of that Warranty except as
                  otherwise provided in paragraph 6.2 of Schedule 3 and as
                  specifically stated in the Disclosure Letter.

                                       18

<PAGE>

7.6               Notwithstanding any rule of law or equity to the contrary, any
                  release, waiver or compromise or other arrangement which the
                  Purchaser agrees to or effects in relation to one of the
                  Warrantors in connection with this agreement, and in
                  particular the Warranties, shall not affect the rights and
                  remedies of the Purchaser as regards any other of the
                  Warrantors.

7.7               The parties agree that the terms of Schedule 6 shall apply in
                  determining the liability of the Warrantors pursuant to this
                  clause 7 and to the Warranties and to the Deed of Indemnity as
                  stated in that Schedule.

7.8               The Warrantors shall indemnify the Purchaser on demand against
                  all liabilities (which includes, without limitation, all
                  losses directly relating to such liabilities) incurred by the
                  Purchaser or the Company after Completion in respect of:

7.8.1             the acquisition of shares by their respective spouses prior to
                  Completion;

7.8.2             any claim in respect of the lease of the Leasehold Property
                  which arises either after Completion or to the extent not paid
                  by the Company prior to Completion including without
                  limitation all rent, service charges and other payments which
                  fall due by the Company under such lease provided that the
                  Warrantors shall be given full conduct of all matters relating
                  to the Leasehold Property and neither the Purchaser nor the
                  Company shall take any action in relation to the Leasehold
                  Property without the prior written consent of the Warrantors;

7.8.3             any liability to Taxation in connection with salaries paid to
                  Lesley Davies and/or Alison Cantle.

7.9               The Purchaser hereby warrants to the Vendors that all
                  authorisations, approvals, consents and licences required by
                  the Purchaser for entering into and the performance of its
                  obligations under this agreement and the Deed of Indemnity
                  have been obtained and have not been rescinded.

8                 ASSIGNMENT AND SUCCESSIONS

8.1               The Purchaser may transfer any of the Shares together with the
                  benefit of each of the Warranties and the Deed of Indemnity
                  to any Associate of the Purchaser and/or, in the event that
                  any Vendor makes a demand under the Loan Notes against Bank
                  of Scotland as guarantor, to Bank of Scotland and, in either
                  case, the transferee shall accordingly be entitled to
                  enforce each of the Warranties and the Deed of Indemnity
                  against the Warrantors in the case of an Associate of the
                  Purchaser for so long as and providing such persons remain
                  an Associate of the Purchaser as if it were named in this
                  agreement and the Deed of Indemnity as the Purchaser.

                                       19

<PAGE>

8.2               This agreement and the Deed of Indemnity binds each party's
                  successors and assigns and personal representatives (as the
                  case may be).

8.3               Except as expressly provided above, none of the rights of the
                  parties under this agreement or the Warranties or Deed of
                  Indemnity may be assigned or transferred.

9                 RESTRICTIVE AGREEMENT

9.1               In this clause 9 the following words have the following 
                  meanings:

                  "Prohibited Business"

                  any business or activity carried on by the Company or an
                  Associate at the Relevant Date or at any time in the Relevant
                  Period;

                  "Prospective Customer"

                  any person, firm or company who was at the Relevant Date
                  negotiating with the Company or an Associate with a view to
                  dealing with the Company or that Associate as a customer;

                  "Protected Supplier"

                  any supplier of the Company or an Associate (as appropriate)
                  during the Relevant Period;

                  "Relevant Date"

                  in respect of each Vendor, the later of the date of Completion
                  and the termination of the employment of the Vendor with the
                  Company;

                  "Relevant Period"

                  the 3 year period ending with the Relevant Date;

                  "Restricted Customer"

                  any person, firm, company or other entity who was at any time
                  in the Relevant Period a customer of the Company or an
                  Associate (as appropriate);

                  "Territory"

                  United Kingdom.

9.2               To assure to the Purchaser the full benefit of the business
                  and goodwill of the Company, each of the Vendors undertakes by
                  way of further consideration for the obligations of the
                  Purchaser under this agreement, as separate and independent
                  agreements, that he will not, subject to clause 9.6:

9.2.1             disclose to any person, or himself use for any purpose, and
                  shall use all reasonable endeavours to prevent the publication
                  or disclosure of, information concerning the businesses,
                  accounts or finances of the Company, or their clients' or
                  customers' transactions or affairs, of which he has knowledge;

                                       20

<PAGE>

9.2.2             for three years after the Relevant Date directly or indirectly
                  on his own account or on behalf of or in conjunction with any
                  person, firm or company or other organisation carry on or be
                  engaged, concerned or interested in the Territory in:

                  (a) any Prohibited Business; or

                  (b) any other business similar to any Prohibited Business;

9.2.3             for three years after the Relevant Date directly or indirectly
                  on his own account or on behalf of or in conjunction with any
                  person, firm or company or other organisation canvass or
                  solicit or by any other means seek to conduct Prohibited
                  Business with or conduct Prohibited Business with any
                  Restricted Customer.

9.2.4             for three years after the Relevant Date directly or indirectly
                  on his own account or on behalf of or in conjunction with any
                  person, firm or company or other organisation canvass or
                  solicit or by any other means seek to conduct Prohibited
                  Business with or conduct Prohibited Business with any
                  Prospective Customer with whom he shall have had dealings at
                  any time in the Relevant Period or with whom and to his
                  knowledge any employee of the Company or an Associate shall
                  have had dealings in the course of their duties;

9.2.5             for three years after the Relevant Date directly or indirectly
                  induce or seek to induce any senior employee or executive of
                  the Company or an Associate engaged in the Prohibited Business
                  who was such a senior employee or executive at the Relevant
                  Date to leave the employment of the Company or that Associate
                  whether or not this would be in breach of contract on the part
                  of the employee;

9.2.6             for three years after the Relevant Date directly or indirectly
                  seek to entice away from the Company or an Associate or
                  otherwise solicit or interfere with the relationship between
                  the Company or that Associate and any Protected Supplier.

9.3               The Vendors agree that the covenants and undertakings
                  contained in clause 9.2 are reasonable and are entered into
                  for the purpose of protecting the goodwill of the business of
                  the Company and that accordingly the benefit of the covenants
                  and undertakings may be assigned by the Purchaser and its
                  successors in title without the consent of the Vendors.

9.4               Each covenant and/or undertaking contained in clause 9.2 shall
                  be construed as a separate covenant or undertaking. If one or
                  more of the covenants and/or undertakings is held to be
                  against the public interest or unlawful or in any way an
                  unreasonable restraint of trade, the remaining covenants and
                  undertakings shall continue to bind the Vendors.

9.5               If any covenant or undertaking contained in clause 9.2 were
                  void but would be valid if the period of application were 
                  reduced or if some part of the covenant or

                                       21

<PAGE>

                  undertaking were deleted, the covenant or undertaking in
                  question shall apply with such modification as is necessary to
                  make it valid.

9.6               The provisions of this clause 9 shall cease to apply if the
                  Purchaser shall default in any of its obligations to issue or
                  redeem any of its Loan Notes (save where such default is
                  rectified by Bank of Scotland pursuant to guarantees of Loan
                  Notes or if capable of remedy is remedied within 90 days of
                  such default).

10                ANNOUNCEMENTS

                  No announcement shall be made in respect of the subject matter
                  of this agreement, except as specifically agreed between the
                  parties, unless an announcement is required by law, the
                  regulators of any recognised stock exchange on which
                  securities of any of the parties or their respective
                  Associates are traded or any other regulatory or government
                  authority or accounting requirements or practices.

11                COSTS

11.1              Subject to clause 11.2, all expenses incurred by or on behalf
                  of the parties, including all fees of agents, representatives,
                  solicitors and accountants engaged by any of them in
                  connection with the negotiation, preparation or execution of
                  this agreement, shall be borne solely by the party who
                  incurred the liability, and the Company shall have no
                  liability in respect of them.

11.2              If the Purchaser determines or rescinds this agreement as a
                  result of fraudulent misrepresentation, then, in addition to
                  any right or remedy which it may have against any of the
                  Vendors for breach of this agreement or the Warranties, the
                  Warrantors shall jointly and severally indemnify the Purchaser
                  for all costs, charges and expenses incurred by it in
                  connection with the negotiation, preparation and determination
                  or rescission of this agreement and all matters which it
                  contemplates.

12                COMMUNICATIONS

12.1              All communications between the parties with respect to this
                  agreement shall:

12.1.1            be delivered by hand, or sent by post to, in the case of the
                  Vendors or the Warrantors, the address of the addressee as set
                  out in this agreement, in the case of the Purchaser, its
                  registered office from time to time; or to such other address
                  in Great Britain as the addressee notifies for the purpose of
                  this clause; or

                                       22

<PAGE>

12.1.2            be sent by facsimile transmission to the facsimile
                  transmission numbers stated below or such other numbers as
                  notified for the purpose of this clause provided that a hard
                  copy follows by pre-paid first class post.

12.2              Communications shall be deemed to have been received as
                  follows:

12.2.1            if sent by post - 3 Business Days after posting;

12.2.2            if delivered by hand - on the day of delivery, if delivered
                  at least 2 hours before the close of business hours on a
                  Business Day, and otherwise on the next Business Day;

12.2.3            if sent by facsimile transmission - at the time of
                  transmission, if received at least 2 hours before the close of
                  business hours on a Business Day, and otherwise on the next
                  Business Day.

                  For this purpose "business hours" mean between the hours of
                  09.00 and 18.00 inclusively local time.

12.3              A communication to the Vendors or the Warrantors must be
                  delivered or sent in accordance with clause 12.1 to both of
                  the Warrantors. Communications addressed to the Purchaser
                  shall be marked for the attention of the Chief Executive of
                  the Purchaser, currently W.L. Milton, and copied to the CEO of
                  Healthworld Corporation, currently S. Girgenti, at 100 Avenue
                  of the Americas, New York, NY 10013, USA.

12.4              The facsimile transmission numbers referred to in clause
                  12.1 are:

                  for the Vendors and/or the Warrantors: in the case of Mr and
                  Mrs Davies - 01276 858192; in the case of Mr and Mrs Cantle -
                  01252 812948;

                  for the Purchaser: 01628 630298 and a copy to Healthworld
                  Corporation: 001 212 966 2743,

13                INVALIDITY

                  If a term in or provision of this agreement is held to be
                  illegal or unenforceable, in whole or in part, under an
                  enactment or rule of law, it shall to that extent be deemed
                  not to form part of this agreement and the enforceability of
                  the remainder of this agreement shall not be affected.

14                PROPER LAW

14.1              The construction, validity and performance of this agreement
                  shall be governed by the laws of England and Wales and the
                  parties submit to the non-exclusive jurisdiction of the
                  English courts of England and Wales.

                                       23

<PAGE>

15                RESCISSION

                  Save in the event of fraud, no right of rescission shall be
                  available to the Purchaser by reason of any breach of the
                  Warranties or any other provision of this agreement or the
                  Deed of Indemnity after the date which falls 6 months after
                  Completion.

Executed by the parties as a deed on the date of this agreement.

                                       24

<PAGE>

                         SCHEDULE 1 - VENDORS' HOLDINGS

<TABLE>
<CAPTION>

          1                          2                  3                                 4

Vendor's name and address        Number of       Amount of Initial               Proportion of Deferred
                                  Shares           Consideration                    Consideration
                                                     (pound)
                                                  (a)               (b)
                                                 Cash          First Tranche
                                                                Loan Notes

<S>                             <C>             <C>           <C>                <C>
Anthony Clive Davies               4,580         300,000         1,183,920                45.8%
Barn Platt
Castle Grove Road
Chobham
Woking
Surrey  GU24 8EF

Stephen Robert Cantle              4,790       1,000,000            551,960               47.9%
Broomrigg House
Broomrigg Road
Fleet
Hampshire  GU13 8LR

Lesley Davies                        420          33,900            102,180                4.2%
Barn Platt
Castle Grove Road
Chobham
Woking
Surrey  GU24 8SF

Alison Cantle                        210          33,900             34,140                2.1%
Broomrigg House
Broomrigg Road
Fleet                                          _________          _________               _____
Hampshire  GU13 8LR                            1,367,800          1,872,200                100%
                                               =========          =========                ====
</TABLE>

                                       25
<PAGE>

                       SCHEDULE 2 - DETAILS OF THE COMPANY


<TABLE>
<S>                                <C>                                                <C>
Company number:                     2213846

Date of incorporation:              26 January 1988

Share Capital:                      Authorised                                          Issued

                                    10,000 ordinary                                     10,000 ordinary
                                    shares of (pound)1 each                             shares of (pound)1 each

Registered office:                  The Mitfords
                                    Basingstoke Road
                                    Three Mile Cross
                                    Reading
                                    Berkshire RG7 1AT

Directors:                          Anthony Clive Davies
                                    Stephen Robert Cantle

Secretary:                          Anthony Clive Davies

Accounting reference date:.         30 April

Security granted by the Company:    Mortgage debenture dated 9 September 1997 in
                                    favour of National Westminster Bank plc

                                    Legal Mortgage dated 9 September 1997 over
                                    the Property in favour of National
                                    Westminster Bank plc

                                       26

<PAGE>

                             SCHEDULE 3 - WARRANTIES

1                 ACCOUNTS

1.1               The Last Accounts

1.1.1             The Last Accounts were prepared in accordance with the
                  historical cost convention; and the bases and policies of
                  accounting, adopted for the purpose of preparing them, are the
                  same as those adopted in preparing the audited accounts of the
                  Company in respect of the three last preceding accounting
                  periods.

1.1.2             The Last Accounts:

                  (a) give a true and fair view of the assets and liabilities of
                      the Company at the Last Accounts Date and its profits for
                      the financial period ended on that date;

                  (b) comply with the requirements of the Companies Acts;

                  (c) comply with the FRSs then in force applicable to a United
                      Kingdom company;

                  (d) save as stated therein are not affected by extraordinary,
                      exceptional or non-recurring items.

1.1.3             No amount included in the Last Accounts in respect of an 
                  asset, whether fixed or current, exceeds its purchase price or
                  production cost (within the meaning of CA Sched 4), or (in the
                  case of current assets) its net realisable value at the Last
                  Accounts Date.

1.2               Valuation of stock-in-trade and work in progress

                  In the Last Accounts and in the accounts of the Company for
                  the three preceding financial years stock in trade and work in
                  progress have been treated in accordance with SSAP 9.

1.3               Depreciation of fixed assets

                  In the Last Accounts and in the accounts of the Company for
                  the three preceding financial years, fixed assets have been
                  depreciated in accordance with SSAP 12.

1.4               Book debts

1.4.1             No part of the amounts included in the Last Accounts, or
                  subsequently recorded in the books of the Company, as owing
                  by debtors is overdue by more than twelve weeks, or has been
                  released on terms that the debtor pays less than the full
                  book value of his debt, or has been written off, or is
                  regarded by the Company as irrecoverable in whole or in
                  part.

                                       27
<PAGE>

1.4.2             The amounts due from debtors as at Completion (less the
                  amount of any relevant provision or reserve, determined on the
                  same basis as that applied in the Last Accounts and disclosed
                  in the Disclosure Letter) will be recoverable in full in the
                  ordinary course of business; and none of those debts is
                  subject to a counter-claim or set off, except to the extent of
                  the provision or reserve.

1.5               Books and records

                  All the accounts, books, ledgers and financial records, of
                  the Company:

                  (a) are in its possession; and

                  (b) have been properly and accurately kept in all material
                      respects;

                  (c) which constitute accounting records, are sufficient to
                      show and explain the Company's transactions and are such
                      as to disclose with reasonable accuracy, at any time, the
                      financial position of the Company at that time in 
                      accordance with s221 CA.

2                 CORPORATE MATTERS

2.1               Directors and shadow directors

2.1.1             The only directors of the Company are the persons whose names
                  are listed as such in Schedule 2.

2.1.2             No person is a shadow director (within the meaning of CA s741)
                  of the Company but is not treated as one of its directors for
                  all the purposes of the Companies Acts.

2.2               Subsidiaries, associations and branches

2.2.1             The Company: 

                  (a) is not the legal and beneficial owner of nor has agreed
                      to acquire share or loan capital of a company (whether
                      incorporated in the United Kingdom or elsewhere);

                  (b) has no branch, agency or place of business, or a permanent
                      establishment (as that expression is defined in the
                      relevant double taxation relief order) outside the United
                      Kingdom.

2.2.2             There are no subsidiary undertakings of the Company, within
                  the meaning of CA s258. 

2.3               Options over the Company's capital

                  Except as required by this agreement, there are no agreements
                  or arrangements in force which provide for the issue,
                  allotment or transfer of, or grant to any person the right
                  (whether conditional or otherwise) to call for the issue,
                  allotment or transfer of, share or loan capital of the Company
                  (including an option or right of pre-emption or conversion).

                                       28
<PAGE>

2.4               Issues of capital

2.4.1             None of the Shares were issued at a discount.

2.4.2             No share or loan capital has been issued or allotted, or
                  agreed to be issued or allotted, by the Company since the Last
                  Accounts Date.

2.5               Transfers of Shares

                  None of the Shares were, or represent assets which were, the
                  subject of a transfer at an undervalue (within the meaning of
                  Insolvency Act 1986, s238 or s339) within the past five years.

2.6               Single member companies

                  The Company has never had only one member.

2.7               Commissions

                  No one is entitled to receive from the Company a finder's fee,
                  brokerage or other commission in connection with the sale and
                  purchase of the Shares under this agreement.

2.8               Memorandum and articles of association, statutory books and
                  resolutions

2.8.1             The copy of the memorandum and articles of association of the
                  Company attached to the Disclosure Letter is accurate and
                  complete and has embodied in it, or annexed to it, a copy of
                  every resolution which is referred to in CA s380.

2.8.2             The register of members and other statutory books of the
                  Company have been properly kept and contain an accurate and
                  complete record of the matters with which they should deal.

2.8.3             No notice or allegation has been received that the
                  statutory books of the Company are incorrect or should be
                  rectified.

2.8.4             Since the Last Accounts Date no alteration has been made to
                  the memorandum or articles of association of the Company and
                  no resolution of the shareholders of the Company has been
                  passed (other than resolutions relating to routine business at
                  annual general meetings).

2.8.5             The Company has not passed an elective resolution under CA
                  s379A, which remains in force.

2.8.6             Notice of any written resolution passed or to be passed by the
                  Company on or after 1 April 1990 was duly given to its
                  auditors in accordance with CA s381B and no notice of
                  objection was given by the auditors.

2.9               Documents filed

2.9.1             All returns, particulars, resolutions and documents required
                  by the Companies Acts or any other legislation to be filed
                  with the Registrar of Companies, in respect of the Company
                  have been duly filed and were correct; and the

                                       29

<PAGE>

                  Company has complied with the Companies Acts in connection
                  with their formation, the allotment or issue of shares,
                  debentures and other securities, the payment of dividends and
                  the conduct of their business.

2.9.2             All charges in favour of the Company have (if appropriate)
                  been registered in accordance with the provisions of CA ss395,
                  409, 410 and 424.

2.10              Possession of documents

                  All documents of title relating to the assets of the Company,
                  and an executed copy of all subsisting written agreements to
                  which the Company is a party, and the original copies of all
                  other documents which are in force or otherwise relevant to
                  the Company which are owned by, or which ought to be in the
                  possession of, the Company are in its possession or under its
                  control.

2.11              Investigations

                  So far as the Vendors are aware, no investigations or
                  enquiries by, or on behalf of, any governmental or other body
                  in respect of the affairs of the Company are taking place or
                  pending.

3                 TAXATION

3.1               Administration

3.1.1             All returns, notifications, computations and payments which
                  should have been made or given by the Company for Taxation
                  purpose were made or given within the requisite periods and
                  are up-to-date, correct and on a proper basis; and none of
                  them is, or is likely to be, the subject of a dispute with the
                  Inland Revenue or other Taxation authorities.

3.1.2             No application for a consent or clearance on behalf of the
                  Company, or affecting the Company has been made.

3.1.3             The Company has not taken any action which has had, or is
                  likely to have, the result of altering or prejudicing, for a
                  period commencing after the Last Accounts Date, an arrangement
                  or agreement which it has with a Taxation authority.

3.1.4             The Company has not paid nor, since the Last Accounts Date,
                  become liable to pay a penalty or interest charged under a
                  Taxation statute.

3.1.5             In calculating the provision or reserve for Taxation in the
                  Last Accounts (including deferred Taxation) which has been
                  noted as not having been provided for in the Last Accounts,
                  there has not been taken into account any indexation allowance
                  under TCGA s53 (The indexation allowance etc) which as a
                  result of FA 1994 s93 (Indexation losses) is not available or
                  is less than it would otherwise have been.

                                       30

<PAGE>

3.2               PAYE and deductions

                  The Company has not been the subject of an investigation
3.2.1             involving a Taxation authority and, so far as the
                  Vendors are aware, there are no circumstances rendering it
                  likely that an investigation will take place.

3.2.2             The Company has paid all national insurance contributions for
                  which it is liable and has not been party to any scheme or
                  arrangement to avoid any liability to account for primary or
                  secondary national insurance contributions.

3.2.3             The Company has properly operated the PAYE system, by duly
                  deducting tax from all payments made, or treated as made, to
                  its employees or former employees, and accounting to the
                  Inland Revenue for all tax deducted and for all tax chargeable
                  on benefits provided for its employees or former employees.

3.2.4             The Company does not provide nor has it provided nor has
                  it agreed to provide:

                  (a) assessable income of an employee in the form of tradable
                      assets within the meaning of ICTA s203F (PAYE: tradable
                      assets) or (as respects  provision  made on or after 6
                      April 1998) in the form of readily convertible assets
                      within the meaning of s 203F, including assessable income
                      within s 203FA (PAYE: enhancing the value of an asset);

                  (b) for an employee by reason of his employment non-cash
                      vouchers to which ICTA s203G (PAYE: non-cash vouchers)
                      applies, credit-tokens to which ICTA s203H (PAYE:
                      credit-tokens) applies or cash vouchers to which ICTA
                      s203I(PAYE: cash vouchers) applies.

3.2.5             The Company has sufficient records relating to past events to
                  calculate the liability to Taxation or relief from Taxation
                  which would arise on a disposal or realisation of any of its
                  assets or a discharge of any of its liabilities.

3.2.6             The Company has not received a notice under ICTA s23
                  (Collection from lessees and agents) which is outstanding.

3.2.7             The Company has not made any payments to or provided benefits
                  for any officer or employee or ex-officer or ex-employee of
                  the Company, which is not allowable as a deduction in
                  calculating profits of the Company for Taxation purposes.

3.3               Taxation claims, liabilities and reliefs

3.3.1             The Disclosure Letter contains full and accurate details of
                  all matters relating to Taxation in respect of which the
                  Company (either alone or jointly with another person) is, or
                  at Completion will be, entitled:

                  (a) to make a claim (including a supplementary claim) for,
                      disclaimer of or election for relief under a Taxation
                      statute;

                                       31

<PAGE>

                  (b) to appeal against an assessment to or a determination
                      affecting Taxation;

                  (c) to apply for the postponement of Taxation;

                  (d) to require the postponement or reduction of an allowance;

                  (e) to elect to treat machinery or plant as a short-life asset
                      within CAA s 37 (Election for certain machinery or plant
                      to be treated as short-life assets).

3.3.2             The Company has not made a claim under TCGA s24(2)(Disposals
                  where assets lost or destroyed, or whose value becomes
                  negligible) or s280 (Consideration payable by instalments) or
                  under TCGA Sched 4 (Deferred charges on gains before 31 March
                  1982).

3.3.3             The Company is not, or will it become, liable to pay, or to
                  reimburse or indemnify any person in respect of, Taxation (or
                  an amount corresponding to Taxation) in consequence of the
                  failure by another person (not being the Company) to discharge
                  that Taxation or amount, where the Taxation or amount relates
                  to a profit, income or gain, transaction, event, omission or
                  circumstance arising or occurring or deemed to have arisen or
                  occurred (whether wholly or partly) prior to Completion.

3.3.4             No relief from Taxation has been claimed or given to the
                  Company, or was taken into account in determining the
                  provision for Taxation in the Last Accounts, and which could
                  be withdrawn, postponed or restricted as a result of an act,
                  omission, event or circumstance arising or occurring at or
                  before Completion.

3.4               Distributions and deductibility of payments

3.4.1             The Company has not repaid, or agreed to repay, or redeemed,
                  or agreed to redeem, shares, or capitalised, or agreed to
                  capitalise profits or reserves in the form of redeemable
                  shares or debentures.

3.4.2             No distribution within the meaning of ICTA s209
                  (Distributions etc) has been made by the Company except
                  dividends shown in its audited accounts nor is the Company
                  bound to make any such distribution.

3.4.3             The Company has not since October 6 1996

                  (a) treated as franked investment income any qualifying
                      distribution received which would fall to be treated as a
                      foreign income dividend under FA 1997 Schedule 7
                      (Special treatment for certain distributions); nor

                  (b) made any qualifying distribution which would fall to be
                      so treated.

3.4.4             No outstanding security (within the meaning of ICTA s254(1)
                  (Company distributions, tax credits etc.: interpretation)), of
                  the Company was issued in such

                                       32
<PAGE>

                  circumstances that the interest payable on it, or any other
                  payment in respect of it, falls to be treated as a
                  distribution under ICTA s209 (Meaning of "distribution").

3.4.5             No rents, interest, annual payments or other sums of an income
                  nature paid, or payable, since the Last Accounts Date by the
                  Company, or which the Company is under an obligation to pay
                  are or may be wholly or partially disallowable as deductions
                  in computing profits or as charges against profits for the
                  purposes of corporation tax by reason of ICTA s74 (General
                  rules as to deductions not allowable), ICTA s125 (Annual
                  payments for non-taxable consideration), ICTA s338 (Allowance
                  of charges on income and capital), ICTA s577 (Business
                  entertainment expense) ICTA s770 (Sales etc at an undervalue
                  or overvalue), ICTA ss779 to 785 (Leased assets), ICTA s787
                  (Restriction of relief for payments of interest) or otherwise.

3.4.6             The Company has not received a capital distribution to
                  which TCGA s189 (Capital distribution of chargeable gains:
                  recovery of tax from shareholder) could apply.

3.4.7             The Company has not incurred expenditure which was not or will
                  not be wholly deductible in computing, or against, profits as
                  a trading expense or expense of management, or as a charge on
                  income or non trading deficit, or in computing income for the
                  purposes of Schedules A or D, except for expenditure on the
                  acquisition of an asset to be held otherwise than as
                  stock-in-trade, details of which are set out in the Disclosure
                  Letter.

3.5               Carry forward of losses and ACT

3.5.1             Nothing has been done, and no event or series of events has
                  occurred, which is likely to cause in relation to the Company
                  the disallowance of the carry forward or carry back of losses,
                  excess charges or advance corporation tax under ICTA s393
                  (Losses other than terminal losses), s393A (Losses : set-off
                  against profits of the same or an earlier accounting period),
                  s768 (Change in ownership of company: disallowance of trading
                  losses), s768A (Change in ownership: disallowance of carry
                  back of trading losses), or ICTA s245 (Calculation etc. of ACT
                  on change of ownership of company) or s245A (Restrictions on
                  the application of s240 in certain circumstances).

3.5.2             The Company will not be restricted by ICTA s245B (Restriction
                  on set-off where asset transferred after change of ownership
                  of company) as to the amount of relief available to it in
                  respect of surplus ACT.

3.5.3             The Disclosure Letter gives details of all claims under ICTA
                  s242 (Set-off of losses etc against surplus of franked
                  investment income) for all periods up to 1 July 1997.

                                       33
<PAGE>

3.6               Close companies

3.6.1             The Company is, and has been at all times during the six years
                  ended on the Last Accounts Date, a close company as defined in
                  ICTA s414 (Close companies).

3.6.2             The Company has not, since the Last Accounts Date, made a
                  distribution within ICTA s418 (`Distribution' to include
                  certain expenses of close companies).

3.6.3             The Company has not made (and will not be deemed to have made)
                  any loan or advance to a participator so as to become liable
                  to make any payment under ICTA s419 (Loans to participators
                  etc), and the Company has not released nor written off the
                  whole or part of any such loan or advance

3.6.4             The Company is not nor has it been a close investment-holding
                  company within the meaning of ICTA s13A (close
                  investment-holding companies).

3.7               Group relief and group surrender

                  The Company is not and never has been a member of a group for
                  the purposes of ICTA Part X Ch IV (Group relief).

3.8               Capital allowances

3.8.1             All expenditure which the Company has incurred or is likely to
                  incur under a subsisting commitment on the provision of
                  machinery or plant has qualified or will qualify (if not
                  deductible as a trading expense of a trade carried on by the
                  Company) for writing-down allowances under CAA s24
                  (Writing-down allowances and balancing adjustments).

3.8.2             All capital allowances made or to be made to the Company in
                  respect of capital expenditure incurred, or to be incurred
                  under a subsisting commitment, have been made, or will be
                  made, in taxing its trade.

3.8.3             Since the Last Accounts Date the Company has not done, omitted
                  to do, agreed to do or permitted to be done anything as a
                  result of which a disposal value may be brought into account
                  under CAA s24 (Writing-down allowances and balancing
                  adjustments), or there may be any recovery of excess relief
                  under CAA s46 (Recovery of excess relief: new expenditure).

3.8.4             No event has occurred since the Last Accounts Date which
                  may be treated as a notional sale by the Company of machinery
                  or plant pursuant to CAA s26 (The disposal value).

3.8.5             The Company is not nor may be in dispute with another person
                  as to the entitlement to capital allowances under CAA s51
                  (Application and interpretation of Chapter VI: Fixtures).

3.8.6             No capital expenditure incurred or to be incurred be
                  Company has been or will be deemed under CAA s159 (Capital
                  expenditure, capital sums and time

                                       34

<PAGE>

                  when capital expenditure is incurred) to have been or be
                  incurred on a date other than that upon which the obligation
                  to pay the expenditure became or becomes unconditional.

3.8.7             No election has been made by the Company under CAA s11 (Long
                  Leases) in relation to a building or structure, or s53
                  (Expenditure incurred by equipment lessor) or s55 (Expenditure
                  incurred by incoming lessee: transfer of allowances) in
                  relation to fixtures.

3.8.8             The Company, which has obtained or is entitled to capital
                  allowances under CAA Part I in respect of capital expenditure
                  incurred on the construction of a building or structure in (or
                  partly in) an enterprise zone, or which has entered into a
                  contract under which it will or may incur such expenditure,
                  has not been nor is it a party to such arrangements as are
                  mentioned in CAA s4A(7) (Realisation of capital value).

3.9               Transactions not at arm's length

3.9.1             The Company has not carried out, nor been engaged in, a
                  transaction or arrangement to which ICTA s770 (Sale etc. at
                  an undervalue or overvalue) has been or may be applied.

3.9.2             The Company does not own, nor has it agreed to acquire, an
                  asset, nor has it received or agreed to receive services or
                  facilities (including the benefit of licences or agreements),
                  the consideration for the acquisition or provision of which
                  was or will be in excess of its market value or determined
                  otherwise than on an arm's length basis.

3.9.3             The Company has not disposed of nor acquired an asset in such
                  circumstances that TCGA s17 (Disposals and acquisitions
                  treated as made at market value) could apply.

3.10              Base values and acquisition costs

3.10.1            If each of the capital assets of the Company was disposed of
                  at Completion for a consideration equal to its book value in
                  or adopted for the purpose of the Last Accounts, no liability
                  to corporation tax on chargeable gains or balancing charge
                  under CAA (if each asset was treated as if used for the
                  purpose of a separate trade) would arise; and, for the purpose
                  of determining the liability to corporation tax on chargeable
                  gains, there shall be disregarded reliefs and allowances
                  available to the Company other than amounts falling to be
                  deducted under TCGA s38 (Acquisition and disposal costs etc).

3.10.2            The Company has not, since the Last Accounts Date, engaged in
                  a transaction in respect of which there may be substituted for
                  Taxation purposes, a

                                       35

<PAGE>

                  consideration which is different from the actual consideration
                  given or received by it.

3.11              Tax avoidance

3.11.1            The Company has not, since the Last Accounts Date, engaged in,\
                  or been a party to a scheme or arrangement of which the main
                  purpose, or one of the main purposes, was the avoidance of, or
                  a reduction in liability to, Taxation.

3.11.2            The Company has not, since the Last Accounts Date, been a
                  party to a transaction to which any of the following has been
                  or could be applied other than transactions in respect of
                  which all necessary consents or clearances have been obtained:

                  (a) ICTA ss703 to 709 (Cancellation of tax advantages from
                      certain transactions in securities);

                  (b) ICTA s765 (Migration etc. of companies);

                  (c) ICTA s776 (Transactions in land: taxation of capital
                      gains);

                  (d) TCGA ss135 to 138 (Company reconstructions and
                      amalgamations);

                  (e) TCGA s139 (Reconstruction or amalgamation involving
                      transfer of business).

3.11.3            The Company has not at any time entered into or been a party
                  to a transaction or series of transactions containing one or
                  more steps inserted without any commercial or business
                  purpose.

3.12              Depreciatory transactions and value shifting

3.12.1            No allowable loss, which may accrue on the disposal by the
                  Company of an asset is likely to be reduced by reason of TCGA
                  s177 (Dividend stripping).

3.12.2            No chargeable gain or allowable loss arising on a disposal
                  by the Company is likely to be adjusted in accordance with
                  TCGA s30 (Value shifting: Tax-free benefits).

3.13              Stock dividends and deep discount securities

3.13.1            The Company has not issued or owns share capital to which
                  ICTA s249 (Stock dividends treated as income) or TCGA s141
                  (Stock dividends: consideration for new holding) could apply.

3.13.2            The Company has not since 13 March 1984 owned or issued a
                  deep discount security within the meaning of ICTA s57 and
                  Sched 4 (Deep discount securities).

3.14              Chargeable gains

3.14.1            In determining the liability to corporation tax on chargeable
                  gains in respect of an asset which has been acquired by the
                  Company, or which the Company has agreed to acquire (whether
                  conditionally, contingently or otherwise):

                                       36

<PAGE>

                 (a) the sums allowable as a deduction will be determined solely
                     in accordance with TCGA s38 (Acquisition and disposal costs
                     etc) and s53 (The indexation allowance and interpretative
                     provisions);

                  (b) the amount or value of the consideration, determined in
                      accordance with TCGA s38(1)(a), will not be less than the
                      amount or value of the consideration actually given by it
                      for the asset;

                  (c) the amount of expenditure on enhancing the value of the
                      asset, determined in accordance with TCGA s38(1)(b), will
                      not be less than the amount or value of all expenditure
                      actually incurred by it on that asset.

3.14.2            No asset owned or agreed to be acquired by the Company (other
                  than plant and machinery in respect of which it is entitled to
                  capital allowances) is a wasting asset within the meaning of
                  TCGA s44 (Meaning of "wasting asset").

3.14.3            The Company is not owed a debt (not being a debt on a
                  security), upon the disposal or satisfaction of which a
                  liability to corporation tax on chargeable gains will arise by
                  reason of TCGA s251 (Debts: General provisions).

3.14.4            No part of the consideration given by the Company for a new
                  holding of shares (within the meaning of TCGA s126
                  (Reorganisation or reduction of share capital: Application of
                  Sections 127 to 131)) will be disregarded by virtue of TCGA
                  s128(2) (Consideration given or received by holder).

3.15              Losses

3.15.1            The Company has not incurred a capital loss to which TCGA
                  s18(3) (Transactions between connected persons) is
                  applicable.

3.15.2            The Company is not treated as a limited partner under ICTA
                  s118 (Restriction on relief: companies).

3.15.3            The Company had not immediately prior to the execution of
                  this agreement an allowable loss which was a pre-entry loss
                  within the meaning of TCGA Schedule 7A (Restriction on set-off
                  of pre-entry losses).

3.15.4            No capital loss of the Company is liable to be restricted or
                  disallowed under the provisions relating to pre-entry gains
                  within the meaning of TCGA Schedule 7AA.

3.16              Replacement of business assets

                  The Company has not made a claim under TCGA ss23 (Receipt of
                  compensation and insurance money not treated as a disposal),
                  152 (Replacement of business assets: Roll-over relief), 153
                  (Assets only partly replaced), 154 (New assets which are
                  depreciating assets), 175 (Replacement of business assets by
                  members of a group) or 247 (Rollover relief on compulsory

                                       37

<PAGE>

                  acquisition) which would affect the amount of the chargeable
                  gain or allowable loss which would, but for the claim, have
                  arisen on a disposal of any of its assets.

3.17              Loan Relationships

3.17.1            The Company applies an authorised accruals method of
                  accounting (as that term is defined in FA 1996 s85) in respect
                  of all loan relationships (as defined in s81) to which it is a
                  party.

3.17.2            The Disclosure Letter contains full and accurate particulars
                  of any loan relationship to which the Company is a party,
                  whether as debtor or creditor, where any party to that loan
                  relationship is connected with the Company for the purposes of
                  FA 1996 Part IV Chapter II.

3.17.3            The Disclosure Letter contains full and accurate particulars
                  of any loan relationship to which the Company is a party and
                  to which FA 1996 s92 (Convertible securities etc) or s93
                  (Relationships linked to the value of chargeable assets)
                  apply.

3.17.4            The Disclosure Letter contains full and accurate particulars
                  of any debtor relationship (as defined in FA 1996 s103) of the
                  Company which relates to a relevant discounted security to
                  which FA 1996 Schedule 9 para 17 (Discounted securities where
                  companies have a connection) or para 18 (Discounted securities
                  of close companies) applies.

3.17.5            The Company has not entered into a transaction to which FA
                  1996 Schedule 9 para 11(1) (Transactions not at arm's length)
                  applies.

3.17.6            The Company has not been, or is entitled to be, released from
                  any liability which arises under a debtor relationship of the
                  Company.

3.17.7            The Disclosure Letter contains full and accurate particulars
                  of

                  (a) any loan relationship to which the Company is a party,
                      whether as debtor or creditor, to which FA 1996 Schedule
                      15 para 8 (Transitional provisions for chargeable assets
                      held after commencement) has applied or will apply on the
                      occurrence of a relevant event (as defined by para 8(2))
                      in respect thereof;

                  (b) in each case, the amount of any deemed chargeable gain or
                      deemed allowable loss which has arisen or will arise in
                      consequence of the relevant event; and

                  (c) any election made pursuant to FA 1996 Schedule 15 para 9
                      (Election for alternative treatment of amounts specified
                      in para 8).

                                       38
<PAGE>

3.18              Value added tax

3.18.1            The Company:

                  (a) has duly registered and is a taxable person for the
                      purposes of value added tax;

                  (b) has complied in all material respects with all statutory
                      requirements, orders, provisions, directions or conditions
                      relating to value added tax;

                  (c) maintains complete, correct and up-to-date records for the
                      purposes of the relevant legislation.

3.18.2            The Company:

                  (a) has not applied for treatment as a member of a group;

                  (b) is not or has agreed to become an agent, manager or
                      factor (for the purposes of VATA s47 (Agents, etc.))
                      of any person who is not resident in the United Kingdom,
                      or the VAT representative within VATA s48 (VAT
                      representatives) of such a person;

                  (c) is not in arrears with a payment or return, or liable to
                      an abnormal or non-routine payment, or a forfeiture or
                      penalty, or to the operation of a penal provision;

                  (d) has not been required by the Commissioners of Customs and
                      Excise to give security.

3.18.3            The Disclosure Letter contains full particulars of claims for
                  bad debt relief made, or which may be made, by the Company
                  under VATA s36 (Bad debts).

3.18.4            All supplies made by the Company are taxable supplies, and the
                  Company is not and will not be denied credit for any input tax
                  by reason of VATA s26 (Input tax allowable under s25) and
                  regulations made thereunder.

3.18.5            No document has left the possession of the Company which, if
                  improperly used by a third party, would lead to a liability on
                  its part to pay an amount of value added tax under VATA Sched
                  11 para 5 (Recovery of VAT, etc.) which, but for the use,
                  would not have been payable by it.

3.18.6            The Company has not within the past twelve months received a
                  surcharge liability notice under VATA s59 (The default
                  surcharge).

3.18.7            The Company has not received a penalty liability notice under
                  VATA s64 (Repeated misdeclarations) or has made a return which
                  contains a material inaccuracy within the meaning of that
                  section.

3.18.8            The Company has not given a certificate for bvalue added tax
                  purposes falling within VATA s62 (Incorrect certificates as to
                  zero rating etc).

                                       39

<PAGE>

3.18.9            The Company has not made a claim for repayment of value added
                  tax under VATA s80 (Recovery of overpaid VAT) which has not
                  been satisfied and in respect of which the Commissioners of
                  Customs and Excise have raised or could raise the defence of
                  unjust enrichment.

3.18.10           The Company has not acquired or brought into use on or after
                  1 April 1990 a computer or item of computer equipment costing
                  (pound)50,000 or more or land or buildings (or parts of
                  buildings) costing (pound)250,000 or more.

3.18.11           The net total of all errors required by law to
                  be corrected in VAT returns submitted by the Company (adding
                  up all under declarations and subtracting all over
                  declarations) as at the date of this agreement does not exceed
                  (pound)500.

3.19              Inheritance tax

3.19.1            The Company has not made a transfer of value (as defined in
                  ITA s3 (Transfers of value)).

3.19.2            No Inland Revenue charge for unpaid inheritance tax (as
                  provided by ITA ss237 and 238 (Inland Revenue charge for
                  unpaid tax)) is outstanding over an asset of the Company or in
                  relation to shares in the capital of the Company.

3.19.3            There are not in existence any circumstances whereby any power
                  mentioned in ITA s212 (Powers to raise tax) could be exercised
                  in relation to any shares, securities or other assets of the
                  Company, or could be exercised but for ITA s204(6) (Limitation
                  of liability).

3.20              Stamp duty

3.20.1            The Company has duly paid or has procured to be paid all
                  stamp duty on documents to which it is a party or in which it
                  is interested and which are liable to duty.

3.20.2            The Company has made all returns and paid all stamp duty
                  reserve tax (SDRT) in respect of any transaction relating to
                  chargeable securities to which it is a party or in respect of
                  which it is liable to account for SDRT under FA 1986 Part IV.

3.20.3            Within the past five years the Company has not made a claim
                  for relief or exemption under FA 1930 s42 (Relief from
                  transfer stamp duty in case of transfer of property as between
                  associated companies) or under FA 1986 s75 (Acquisitions:
                  reliefs).

3.20.4            The Company is not a party to a document held outside the
                  United Kingdom which, if brought into the United Kingdom,
                  would be liable to stamp duty under Stamp Act 1891 s14(4)
                  (Terms upon which instruments not duly stamped may be received
                  in evidence).

                                       40

<PAGE>

3.21              Deferred taxation

                  Where provision for deferred taxation is not made in the Last
                  Accounts, full details of the amounts of deferred taxation are
                  disclosed in the Disclosure Letter.

4                 FINANCE

4.1               Capital commitments

                  There were no commitments on capital account outstanding at
                  the Last Accounts Date with a value in excess of (pound)15,000
                  and, since the Last Accounts Date, the Company has not made or
                  agreed to make capital expenditure, or incurred or agreed to
                  incur capital commitments or disposed of or realised capital
                  assets or an interest in capital assets with a value in excess
                  of (pound)15,000.

4.2               Dividends and distributions

4.2.1             Since the Last Accounts Date and other than the Pre-completion
                  Dividends no dividend or other distribution (as defined in
                  ICTA Part VI Chapter II as extended by ICTA s418) has been, or
                  is treated as having been, declared, made or paid by the
                  Company.

4.2.2             All dividends or distributions declared, made or paid by the
                  Company were declared, made or paid in accordance with its
                  articles of association and the applicable provisions of the
                  Companies Acts.

4.3               Bank and other borrowings

4.3.1             Full and accurate details of all limits on the Company's bank
                  overdraft facilities are set out in the Disclosure Letter.

4.3.2             The total amount borrowed by the Company from its bankers does
                  not exceed its overdraft facilities.

4.3.3             The total amount borrowed by the Company (as determined in
                  accordance with the relevant instrument) does not exceed any
                  limitation on its borrowing powers contained in its articles
                  of association or other relevant document.

4.3.4             The Company has no outstanding nor has agreed to create nor
                  issue any loan capital; and it has not factored any of its
                  debts, or engaged in financing of a type which would not
                  require to be shown or reflected in the Last Accounts, or
                  borrowed money which it has not repaid, apart from normal
                  trade credit or borrowings not exceeding the amounts shown in
                  the Last Accounts.

4.3.5             The Company has not, since the Last Accounts Date, repaid or
                  become liable to repay any loan or indebtedness in advance of
                  its stated maturity.

4.3.6             The Company has not received notice (whether formal or
                  informal) from a lender of money, requiring repayment or
                  intimating the enforcement of a security; and, so far as the
                  Warrantors are aware, there is nothing likely to give rise to
                  a notice.

                                       41
<PAGE>

4.4               Loans by and debts due to the Company

4.4.1             The Company has not lent money which has not been repaid to
                  it, or owns the benefit of any debt (whether or not due for
                  payment), other than debts which have arisen in the ordinary
                  course of its business.

4.4.2             The Company has not made a loan or quasi-loan contrary to
                  the Companies Acts.

4.4.3             The Company has not made a loan, which remains outstanding,
                  on terms entitling it to receive either a rate of interest
                  varying with, or a share of, the profits of a business.

4.5               Liabilities

4.5.1             There has been no exercise, purported exercise or claim for a
                  charge, lien, encumbrance or equity over fixed assets of the
                  Company.

4.5.2             There is no dispute directly or indirectly relating to fixed
                  assets of the Company.

4.5.3             The Company has not been the tenant of, or a guarantor in
                  respect of, leasehold property other than the Property.

4.6               Bank accounts

                  Since the date of each bank statement provided pursuant to
                  clause 6 there have been no payments out of the account to
                  which the statement relates, except for payments in the
                  ordinary and normal course of business.

4.7               Continuation of facilities

                  In relation to all debentures, acceptance credits, overdrafts,
                  loans or other financial facilities outstanding or available
                  to the Company (referred to in this clause as "facilities"):

                  (a) the Disclosure Letter sets out full and accurate details
                      and there are attached to it accurate copies of all
                      documents relating to the facilities;

                  (b) there has been no contravention of, or non-compliance
                      with, the provisions of those documents;

                  (c) no steps for the early repayment of indebtedness have
                      been taken or threatened;

                  (d) none of the facilities is dependent on the guarantee or
                      indemnity of, or security provided by, a person other
                      than the Company.

4.8               Creditors

                  There is no amount in excess of (pound)1,000 owing by the
                  Company to a creditor which has been due for more than seven
                  weeks.

                                       42
<PAGE>

4.9               Government grants

                  The Company has not applied for or received a grant or subsidy
                  or financial assistance from a government department or agency
                  or a local or other authority.

5                 TRADING

5.1               Changes since Last Accounts Date

                  Since the Last Accounts Date and, in particular, but without
                  limitation, in the period from 1 July 1998 to the date of
                  Completion:

                  (a) the business of the Company has been continued in the
                      normal course;

                  (b) there has been no deterioration in the gross income of
                      the Company.

5.2               Vendors' other interests and liabilities to the Company

5.2.1             Neither the Warrantors nor their respective Associates, have
                  any rights or interests, directly or indirectly, in businesses
                  other than those now carried on by the Company, which are or
                  are likely to be, or become, competitive with the businesses
                  of the Company, except as registered holder or owner with full
                  title guarantee of securities listed on the Stock Exchange, or
                  traded on the alternative investment market of the Stock
                  Exchange, and in respect of which a Warrantor, with his
                  Associates, holds with full title guarantee less than 5 per
                  cent of any single class of the securities in that company.

5.2.2             There is no outstanding indebtedness of a Vendor, or his
                  Associates, to the Company.

5.3               Effect of sale of Shares

5.3.1             So far as the Warrantors are aware, after Completion (whether
                  by reason of an existing agreement or arrangement or
                  otherwise) as a result of the proposed acquisition of the
                  Company by the Purchaser:

                  (a) no supplier of the Company will cease, or be entitled to
                      cease, supplying it or may substantially reduce its 
                      supplies to it;

                  (b) no customer of the Company will cease, or be entitled to
                      cease, to deal with it or may substantially reduce its
                      existing level of business with it;

                  (c) the Company will not lose the benefit of a right or
                      privilege which it enjoys;

                  (d) no officer or senior employee of the Company is likely to
                      leave.

5.3.2             Compliance with the terms of this agreement does not and
                  will not:

                  (a) conflict with, or result in the breach of, or constitute
                      a default under an agreement or arrangement to which the
                      Company is a party, or a

                                       43
<PAGE>

                      provision of the memorandum or articles of association of
                      the Company or an encumbrance, order, judgement, award,
                      injunction, regulation or other restriction or obligation
                      by which or to which an asset of the Company is bound or
                      subject;

                  (b) relieve another person from an obligation to the Company
                      (whether contractual or otherwise), or enable another
                      person to determine such an obligation, or a right or
                      benefit enjoyed by the Company, or to exercise a right,
                      whether under an agreement with, or otherwise in respect
                      of, the Company;

                  (c) result in the creation, imposition, crystallisation or
                      enforcement of an encumbrance on assets of the Company;

                  (d) result in present or future indebtedness of the Company
                      becoming due and payable, or capable of being declared
                      due and payable, prior to its stated maturity.

5.4               Conduct of businesses in accordance with memoranda and
                  articles of association

5.4.1             The Company has carried on business and conducted its affairs
                  in accordance with its memorandum and articles of association
                  from time to time.

5.4.2             The Company is empowered and duly qualified to carry on
                  business in all jurisdictions in which it carries on business.

5.5               Joint ventures and partnership

5.5.1             The Company is not, nor has it agreed to become, a participant
                  in or member of a joint venture, consortium, partnership or
                  other unincorporated association.

5.5.2             The Company is not, nor has it agreed to become, a party to an
                  agreement or arrangement for sharing commissions or other
                  income.

5.6               Agreements relating to the management and business

                  There are no agreements or arrangements between the Company
                  and a person who is a shareholder, or the owner with title
                  guarantee of an interest, in it, or in a company in which the
                  Company is interested, or an Associate of such a person,
                  relating to the management of the Company's business, or the
                  appointment or removal of directors of the Company, or the
                  ownership or transfer of ownership or the letting of assets of
                  the Company, or the provision, supply or purchase of finance,
                  goods, services or other facilities to, by or from the
                  Company, or in any other respect relating to its affairs.

5.7               Agency agreements and agreements restricting business

5.7.1             The Company is not a party to an agency, distributorship,
                  marketing, purchasing, manufacturing or licensing agreement
                  or arrangement, or a restrictive trading or

                                       44
<PAGE>

                  other agreement or arrangement pursuant to which its business
                  is carried on, or which restricts its freedom to carry on its
                  business in the United Kingdom or elsewhere in such manner as
                  it thinks fit.

5.7.2             The Company is not bound by an undertaking or assurances given
                  to a court or governmental agency.

5.8               Unfair trade and restrictive practices

5.8.1             The Company has not committed, nor omitted to do, anything
                  which is likely to give rise to a fine or penalty.

5.8.2             The Company is not a party to an agreement, practice or
                  arrangement which:

                  (a) contravenes the Trade Descriptions Act 1968;

                  (b) contravenes the Fair Trading Act 1973 Part XI;

                  (c) would, or might, result in a reference of a "consumer
                      trade practice", within the meaning of the Fair Trading
                      Act 1973 s13, or be liable to reference to the Consumer
                      Protection Advisory Committee under Part II of the
                      said Act;

                  (d) contravenes the Consumer Credit Act 1974;

                  (e) contravenes, or is invalidated (in whole or in part) by,
                      or is subject to registration under, the Restrictive Trade
                      Practices Acts 1976 and 1977;

                  (f) contravenes, or is invalidated by, the Resale Prices Act
                      1976;

                  (g) contravenes the Treaty of Rome;

                  (h) contravenes any other anti-trust, anti-monopoly or
                      anti-cartel legislation or regulations.

5.8.3             The Company has not engaged in an anti-competitive practice
                  as defined in the Competition Act 1980.

5.9               Litigation, disputes and winding up

5.9.1             The Company is not engaged in litigation or arbitration
                  proceedings, as plaintiff or defendant; there are no
                  proceedings pending or threatened, either by or against the
                  Company; and, so far as the Warrantors are aware, there is
                  nothing which is likely to give rise to litigation or
                  arbitration.

5.9.2             There is no dispute with a revenue or other official
                  department in the United Kingdom or elsewhere in relation to
                  the affairs of the Company and, so far as the Warrantors are
                  aware, there is nothing which is likely to give rise to a
                  dispute.

5.9.3             There are no claims pending or threatened and, so far as the
                  Warrantors are aware, likely to arise, against the Company, by
                  an employee or third party in respect of an accident or
                  injury, which are not fully covered by insurance.

                                       45

<PAGE>

5.9.4             No order has been made, or petition presented, or resolution
                  passed for the winding up of the Company; no distress,
                  execution or other process has been levied in respect of the
                  Company which remains undischarged; and there is no
                  unfulfilled or unsatisfied judgment or court order outstanding
                  against the Company.

5.9.5             The Company has not stopped payment nor is insolvent nor
                  unable to pay its debts within the meaning of Insolvency Act
                  1986 s123 (but omitting any requirement to prove anything to
                  the satisfaction of the court).

5.10              Compliance with statutes

5.10.1            Neither the Company, nor any of its officers, agents or 
                  employees (during the course of their duties in relation to
                  it), has committed, or omitted to do, an act or thing, the
                  commission or omission of which is, or could be, in
                  contravention of an act, order, regulation or the like
                  (whether of the United Kingdom or elsewhere) giving rise to a
                  fine, penalty, default proceeding or other liability on its
                  part.

5.10.2            The Company has conducted and is conducting its business in
                  accordance with all applicable laws and regulations, whether
                  of the United Kingdom or elsewhere.

5.10.3            The Company does not carry on (or has, at any time when not an
                  authorised person under Chapter III, Financial Services Act
                  1986, carried on) investment business in the United Kingdom
                  within the meaning of that Act.

5.11              Data protection

5.11.1            The Company has complied with all relevant requirements of the
                  Data Protection Act 1984 including:

                  (a) the data protection principles established in the Act;

                  (b) requests from data subjects for access to data held by it;

                  (c) the requirements relating to the registration of data
                      users.

5.11.2            The Company has not received a notice or allegation from
                  either the data protection registrar or a data subject
                  alleging non-compliance with the data protection principles or
                  prohibiting the transfer of data to a place outside the United
                  Kingdom.

5.11.3            No individual has claimed, or will have the right to claim,
                  compensation from the Company under the Act for loss, or
                  unauthorised disclosure, of data.

5.12              Documents stamped

                  All documents which affect the right, title or interest of the
                  Company in or to any of its properties, undertaking or assets,
                  or to which the Company is a party, and which attract stamp
                  duty have been duly stamped within the requisite period for
                  stamping.

                                       46

<PAGE>

5.13              Business names

                  The Company does not use a name for any purpose other than its
                  full corporate name.

5.14              Transactions involving directors

                  The Company has not been a party to a transaction to which CA
                  s320 or s330 may apply.

5.15              Powers of attorney and authority

5.15.1            No power of attorney given by the Company is in force.

5.15.2            No authorities (express or implied) by which another person
                  may enter into a contract or commitment to do anything on
                  behalf of the Company are outstanding.

5.16              Licences and consents

                  The Company has obtained all necessary licences and consents
                  for the proper carrying on of its business (short particulars
                  of each licence and consent being set out in the Disclosure
                  Letter); all the licences and consents are valid and
                  subsisting; the Company is not in breach of any of the
                  licences or consents; and, so far as the Warrantors are aware,
                  there is nothing that might prejudice their continuation or
                  renewal.

5.17              Subsisting contracts

5.17.1            The Company is not a party to a contract, transaction,
                  arrangement or liability which:

                  (a) is outside the ordinary and proper course of business;

                  (b) is for a fixed term of more than six months;

                  (c) is of a long-term nature (that is, unlikely to have been
                      fully performed, in accordance with its terms, more than
                      six months after the date on which it was entered into or
                      undertaken);

                  (d) cannot be terminated by it, in accordance with its terms,
                      on sixty days' notice or less;

                  (e) is of a loss-making nature (that is, known by the
                      Warrantors to be likely to result in a loss to it on
                      completion of performance);

                  (f) involves payment by it of amounts determined by reference
                      to fluctuations in the index of retail prices, or another
                      index, or in the rate of exchange for a currency;

                  (g) involves an aggregate outstanding expenditure by it of
                      more than (pound)50,000;

                                       47
<PAGE>

                  (h) involves, or is likely to involve, the supply of goods the
                      aggregate sales value of which will represent in excess of
                      10 per cent of its turnover for the preceding financial
                      year; or

                  (i) is a contract for hire or rent, hire purchase, or purchase
                      by way of credit sale or periodical payment.

5.17.2            The provisions of the written contracts provided by the
                  Vendors and accompanying the Disclosure Letter
                  reflect the actual terms of such contracts.

5.18              Defaults under agreements by the Company

5.18.1            The Company is not:

                  (a) in default under an agreement or arrangement to which it
                      is a party, or in respect of another obligation or
                      restriction by which it is bound;

                  (b) in default under an obligation existing by reason of
                      membership of an association or body.

5.18.2            No threat or claim of default under an agreement, obligation
                  or arrangement has been made, and is outstanding, against the
                  Company; so far as the Warrantors are aware, there is nothing
                  whereby an obligation, right, benefit or entitlement may be
                  prematurely terminated or rescinded by any other party, or by
                  which the terms may be worsened.

5.19              Other party's defaults

                  So far as the Warrantors are aware, no party to an agreement
                  or arrangement with, or under an obligation to, the Company is
                  in default under it, being a default which is material in the
                  context of the Company's financial or trading position; and,
                  so far as the Warrantors are aware, there is nothing likely to
                  give rise to a default.

5.20              Outstanding offers

                  No offer, tender or the like is outstanding which may be
                  converted into an obligation of the Company by the unilateral
                  act of another person.

5.21              Purchases and sales from or to one party

                  Not more than 25 per cent of the aggregate amount of all the
                  purchases, and not more than 25 per cent of the aggregate
                  amount of all the sales, of the Company are obtained, or made,
                  from or to the same supplier or customer, (including a person
                  connected with the supplier or customer); and so far as the
                  Warrantors are aware, no material source of supply to the
                  Company, or material outlet for the sales of the Company, is
                  or is likely to be in jeopardy.

5.22              Guarantees and indemnities

                  No guarantee, or agreement for indemnity or for suretyship
                  given by the Company or for its accommodation is outstanding.

                                       48

<PAGE>

5.23              Insider contracts

5.23.1            No agreement or arrangement to which the Company is a party
                  and which a Vendor, or an Associate of a Vendor, or a director
                  of the Company, or an Associate of such director, is or has
                  been interested, whether directly or indirectly, is
                  outstanding or existed during the past three years.

5.23.2            The Company is not a party to, and its profits or financial
                  position during the past three years have not been affected
                  by, an agreement or arrangement which was or is not at arm's
                  length.

5.24              Management reports

                  There have been no reports, concerning the Company by
                  financial or management consultants during the past three
                  years.

5.25              Pollution

                  So far as the Warrantors are aware, the Company has complied,
                  and has adequate facilities to continue to comply, with all
                  legislation relating to the disposal of industrial effluent.

6                 ENVIRONMENTAL WARRANTIES

6.1               For the purposes of this clause the expression "Environmental
                  Legislation" means:

6.1.1             The Environmental Protection Act 1990 ("the EPA");

6.1.2             The Control of Pollution Act 1974;

6.1.3             The Planning (Hazardous Substances) Act 1990;

6.1.4             The Radioactive Substances Act 1960;

6.1.5             The Clean Air Act 1968;

6.1.6             The Health and Safety at Work etc Act 1974;

6.1.7             The Alkali etc Works Regulation Act 1906;

6.1.8             The Public Health Act 1936;

6.1.9             The Safety (Emissions into the Atmosphere) Regulations 1983.

6.2               So far as the Warrantors are aware and having made no
                  environmental searches or surveys, the Company is in
                  compliance with Environmental Legislation and no offence has
                  been committed on or in connection with the Freehold Property
                  or any activities, processes or substances in, on, over or
                  under the Freehold Property under the Environmental
                  Legislation.

6.3               No writ, summons, order, enforcement notice, prohibition
                  notice or other notice has been issued or served and no
                  direction of any public or other statutory authority has been
                  made with regard to the Freehold Property and/or any
                  activities, processes or substances, in, on, over, or under
                  the Freehold

                                       49
<PAGE>


                  Property pursuant to the Environmental Legislation and no
                  prosecutions have been instituted with respect thereto.

6.4               No complaints have been made by any third party with regard
                  to the Freehold Property and/or any activities, processes or
                  substances in, on, over or under the Freehold Property as a
                  result of any actual or alleged breach of the Environmental
                  Legislation or the presence of any waste (as defined in the
                  EPA) of any kind, noise, vibration, smell, fumes or similar
                  matters nor have any such matters been spilled, released,
                  discharged or disposed of in the soil or water in, under or
                  upon the Freehold Property.

6.5               The Company has not received nor applied for any grants or
                  funds from any public authority in connection with
                  environmental improvements on the Freehold Property.

7                 EMPLOYMENT

7.1               Employees and terms of employment

7.1.1             Complete and accurate particulars of the identities, dates of
                  commencement of employment, or appointment to office, and
                  terms of employment of all the employees and officers of the
                  Company, including profit sharing, commission or discretionary
                  bonus arrangements, are contained in the Disclosure Letter.

7.1.2             There are no agreements or arrangements between the Company
                  and a trade union or other body representing employees.

7.1.3             No contract of service exists between the Company and a
                  director or employee in relation to which the requirements of
                  CA s319 have not been fulfilled.

7.2               Bonus schemes

7.2.1             There are no schemes in operation entitling an employee of the
                  Company to a commission or remuneration calculated by
                  reference to the whole or part of the turnover, profits or
                  sales of the Company.

7.2.2             The Company has not registered a profit-related pay scheme
                  under the provisions of ICTA Part V Chapter III.

7.3               Changes in remuneration

7.3.1             During the period to which the Last Accounts relate and since
                  the Last Accounts Date or (where employment or holding of
                  office commenced after the beginning of the period) since the
                  commencing date of the employment or holding of office:

                  (a) no change has been made in the rate of remuneration,
                      emoluments or pension benefits, of an officer, ex-officer
                      or senior executive of the Company (a senior executive
                      being a person in receipt of remuneration in excess of
                      (pound)25,000 per annum);

                                       50
<PAGE>

                  (b) no change has been made in any other terms of employment
                      of an officer or senior executive.

                  (c) The Company is not obliged nor accustomed to pay anything
                      other than in respect of remuneration or pension benefits,
                      to or for the benefit of an officer or employee of the
                      Company, or their Associates.

                  (d) No negotiations for an increase in the remuneration or
                      benefits of an officer or employee of the Company are
                      current or, so far as the Warrantors are aware, likely to
                      take place within six months after Completion.

7.4               Termination of contracts of employment

7.4.1             All contracts of service to which the Company is a party
                  are determinable at any time on three months' notice
                  or less without compensation (other than compensation in
                  accordance with the Employment Rights Act 1996).

7.4.2             No executive of the Company, who is in receipt of remuneration
                  in excess of (pound)25,000 per annum, and no officer of the
                  Company has given or received notice terminating his
                  employment, except as expressly contemplated in this
                  agreement, or will be entitled to give notice as a result of
                  this agreement.

7.5               Industrial disputes and negotiations

                  The Company nor its employees is involved in an industrial
                  dispute, and there are no facts known to the Company or its
                  directors or to the Warrantors which might suggest that there
                  may be an industrial dispute involving the Company or that
                  this agreement may lead to an industrial dispute.

7.6               Industrial agreements

                  The Company has not entered into a collective agreement with a
                  trade union nor has it recognised a trade union for any such
                  (or other) purpose nor has it done anything which amounts to
                  entering into a collective agreement or recognising a trade
                  union under the Trade Union and Labour Relations
                  (Consolidation) Act 1992.

7.7               Redundancies

                  No employee will become redundant and be entitled to a
                  redundancy payment as a result of this agreement.

7.8               Pensions

                  The Company is not under a legal or moral obligation, nor is
                  it a party to an ex-gratia arrangement, to pay pensions,
                  gratuities, superannuation allowances or the like, or
                  otherwise to provide "relevant benefits" within the meaning of
                  ICTA s612(1), to or for any of its past or present officers or
                  employees or their

                                       51
<PAGE>

                  dependants; and there are no retirement benefits, or pension
                  or death benefits, or similar schemes or arrangements in
                  relation to the Company.

7.9               Personal injury

                  No employee has suffered personal injury during the course of
                  his employment with the Company at any time during the last 5
                  years.

7.10              No employee has notified the Company that he is disabled under
                  the Disability Discrimination Act 1995 and no "reasonable
                  adjustments" under section 6 of such Act have been requested
                  and/or, so far as the Warrantors are aware, contemplated.

8                 ASSETS

8.1               Ownership of assets

8.1.1             The Company owned at the Last Accounts Date, and had good and
                  marketable title to, all the assets included in the Last
                  Accounts (other than the Property) and (except for current
                  assets subsequently sold or realised in the ordinary course
                  of business) still owns and has good and marketable title to
                  them and to all assets acquired since the Last Accounts
                  Date.

8.1.2             The Company has not created, nor granted, nor agreed to create
                  or grant, a security interest or other encumbrance in respect
                  of fixed assets included in the Last Accounts (excluding the
                  Property), or acquired or agreed to be acquired since the Last
                  Accounts Date, otherwise than in the ordinary course of its
                  business.

8.1.3             None of the assets, undertaking, goodwill or uncalled capital
                  of the Company (excluding the Property) is subject to, and the
                  Company has not agreed to grant an option, charge, lien or
                  encumbrance, or right of pre-emption.

8.2               Retention of title

                  The Company does not hold goods which it purchased on terms
                  that property does not pass until full payment is made or all
                  indebtedness discharged.

8.3               Insurance

8.3.1             Nothing has been done or omitted to be done which could make
                  any policy of insurance of the Company void or voidable, or
                  which is likely to result in an increase in premium. Full
                  particulars of all insurances maintained by the Company have
                  been disclosed to the Purchaser. Such policies are current, in
                  full force and effect and all premiums due on all such
                  policies of insurance have been paid.

                                       52
<PAGE>

8.3.2             No claim is outstanding under any of the said policies and,
                  so far as the Warrantors are aware, no circumstances exist
                  which are likely to give rise to a claim.

8.4               Leased assets

                  No circumstance has arisen or so far as the Warrantors are
                  aware is likely to arise in relation to an asset held by the
                  Company under a lease or similar agreement as a result of
                  which the rental payable has been, or is likely to be,
                  increased and, in particular, all the leased assets have at
                  all relevant times been used for a qualifying purpose within
                  the meaning of CAA s39.

8.5               Plant in working order

8.5.1             The plant, machinery, vehicles and other equipment used in
                  connection with the business of the Company:

                  (a) are in a good state of repair and condition and in
                      satisfactory working order and have been regularly and
                      properly maintained;

                  (b) are in its possession and control, and are its absolute
                      property, except for the items which are the subject of
                      the hire purchase, leasing or rental agreements listed in
                      the Disclosure Letter, or in respect of which the
                      outstanding payments do not exceed (pound)1,000;

                  (c) are not expected to require replacements or additions
                      at a cost in excess of (pound)10,000 within the next
                      six months;

                  (d) are all capable, and (subject to normal wear and tear)
                      will remain capable, throughout the period of time during
                      which they are each written down to a nil value in the
                      accounts of Company (in accordance with the accounting
                      principles disclosed in the Last Accounts) of doing the
                      work for which they were designed or purchased.

8.5.2             Copies of all maintenance contracts have been provided to the
                  Purchaser prior to Completion and are in full force.

8.6               Intellectual property rights and trade secrets

8.6.1             No Intellectual Property Rights are owned by the Company.

8.6.2             Neither the business of the Company [nor any licence granted
                  by the Company]` nor any process or products of the Company
                  infringes an Intellectual Property Right of another person or
                  involves the unlicensed use of an Intellectual Property Right.

8.6.3             Particulars of any licences granted to the Company in
                  relation to Intellectual Property Rights are set out in the
                  Disclosure Letter and the Company has not committed a breach
                  of the licences.

                                      53

<PAGE>

8.6.4             The Company has no liability to pay compensation under the
                  Patents Act 1977, ss40 and 41.

8.6.5             The Company has not (otherwise than in the ordinary and
                  normal course of business) disclosed, or permitted to be
                  disclosed, or undertaken or arranged to disclose, to a person
                  other than the Purchaser any of its know-how, technical
                  information, trade secrets, confidential information, price
                  lists or lists of customers or suppliers.

8.6.6             The Company is not a party to a secrecy agreement or
                  agreement which may restrict the use or disclosure of
                  information. 

8.6.7             Nothing has been done or omitted by the Company which would
                  enable a licensee under a licence granted by the Company to
                  terminate it, or which constitutes a breach of its terms.

8.7               Year 2000

                  So far as the Warrantors are aware, in relation to hardware
                  and software used in the business of the Company, none of it
                  contains embedded logic or code which will fail to recognise
                  year 2000 as such, or which might fail or cause other
                  hardware or software to cease to perform according to
                  specification or to the needs of the Company's business by
                  reason of the date change after 31 December 1999, or cannot
                  accurately and correctly process data including dates from
                  different countries.

9                 PROPERTIES

9.1               Title

                  The Property comprises all the properties owned, occupied or
                  otherwise used by the Company in connection with its business.

9.2               Statutory obligations

9.2.1             As far as the Warrantors are aware, the Company has complied
                  and is complying with applicable statutory and by-law
                  requirements with respect to the Freehold Property, and in
                  particular with the requirements as to fire precautions and
                  under the Public Health Acts, the Housing Acts, the Highway
                  Acts, Offices, Shops and Railway Premises Act 1963, the
                  Factory Acts and the London Building Acts.

9.2.2             As far as the Warrantors are aware, there is no unperformed
                  obligation with respect to the Freehold Property necessary to
                  comply with the requirements (whether formal or informal) of
                  a competent authority exercising statutory or delegated
                  powers. 

                                      54

<PAGE>

9.2.3             No licences are required, whether under the Licensing Act
                  1988 or otherwise, in relation to the Freehold Property.

9.2.4             Save in respect of the Leasehold Property, the Company has
                  not at any time been a tenant under any lease.

                                      55

<PAGE>

                        SCHEDULE 4 - DEED OF INDEMNITY

DATED:
PARTIES:

1. "Covenantors": The persons whose names/addresses are set out in the schedule

2. "Purchaser":   Healthworld Holdings Limited (registered number 3458882) whose
                  registered office is at 1 Thames Street, Windsor, Berkshire 
                  SL4 1PL

RECITAL

This deed is entered into in accordance with an agreement (the "Agreement") made
between the Covenantors and the Purchaser relating to the acquisition of the
entire issued share capital of Colwood House Medical Publication (UK) Limited
(registered in England and Wales under no: 2213846). 

1                 Definitions

1.1               In this deed:

1.1.1             the same meaning is given to words and expressions defined in
                  the Agreement except where otherwise provided or expressly
                  defined below;

1.1.2             "Taxation" means all forms of taxation, duties and levies
                  whatsoever and whenever imposed, whether by governmental or
                  other authority and whether of the United Kingdom or
                  elsewhere, and (without limitation) includes: 

1.1.3             income tax, corporation tax, capital gains tax, inheritance 
                  tax, stamp duty, value added tax, customs and other import
                  duties and national insurance contributions and any payment
                  whatsoever which the Company may be or become bound to make to
                  any person as a result of any enactment relating to taxation
                  and any other taxes, duties or levies supplementing or
                  replacing any of the above;

1.1.4             all interest, fines and penalties incidental, or relating, to
                  any such taxation, duties or levies, whatsoever.

1.2               "Relief" includes (without limitation) any loss, relief,
                  allowance, exemption, set-off or deduction in computing, or
                  against, profits, income or gains of any description or from
                  any source, or credit against Taxation.

1.3               "Liability to Taxation" means any liability to make a payment
                  in respect of Taxation but does not include:-


1.3.1             the loss, counteracting or clawing back of any Relief which
                  would otherwise have been available to the Company;

                                      56

<PAGE>

1.3.2             the nullifying, cancellation or set-off of a right to
                  repayment of Taxation which would otherwise have been
                  available to the Company;

                  PROVIDED however that if the loss, counteracting or clawing
                  back of any Relief referred to in paragraph 1.3.1, or the
                  nullifying, cancellation or set-off of a right to repayment
                  as referred to in paragraph 1.3.2 results in a liability of
                  the Company to make a payment in respect of Taxation in
                  respect of an accounting period commencing prior to
                  Completion, that liability shall itself be a "Liability to
                  Taxation" for the purposes of this deed.

1.4               "Claim for Taxation" includes (without limitation) any
                  notice, demand, assessment, letter or other document issued,
                  or action taken, by or on behalf of the Inland Revenue or
                  Customs and Excise authorities or any other statutory or
                  governmental authority or body whatsoever in any part of the
                  world or any form of self-assessment under the Pay and File
                  system introduced by the Finance Act 1990, whereby the
                  Company is, or is likely to be, subject to a Liability to
                  Taxation (whether or not it is primarily payable by the
                  Company and whether or not the Company has, or may have, any
                  right of reimbursement).

1.5               "Final Determination" means, in relation to a Claim for
                  Taxation where there is an appeal against that assessment or
                  self-assessment: 

1.5.1             an agreement under section 54 Taxes Management Act 1970 or
                  any legislative provision corresponding to that section;

1.5.2             a decision of a court or tribunal from which either no appeal
                  lies or in respect of which no appeal is made within the
                  prescribed time limit.

1.6               References to paragraphs are to paragraphs of this deed,
                  unless otherwise stated.

2                 Covenant

2.1               Subject as provided below, the Covenantors jointly and
                  severally covenant with the Purchaser that they will
                  indemnify the Purchaser against:

2.1.1             any Liability to Taxation or any depletion in the value of
                  the assets of the Company, arising by reason of, or in
                  consequence of, or in connection with, any Liability to
                  Taxation; and

2.1.2             the costs, charges and expenses reasonably incurred by the
                  Company in relation to any demands, actions, proceedings and
                  claims in respect of Liabilities to Taxation or Claims for
                  Taxation.

2.2               The covenant in paragraph 2.1 shall apply only where the
                  Liability to Taxation or the Claim for Taxation:- 

                                      57

<PAGE>

2.2.1             results from or is made wholly or partly in respect of or in
                  consequence of any acts, omissions or transactions whatsoever
                  of the Company occurring or entered into on or before the
                  Completion Date; or

2.2.2             results from, or is calculated by reference to, any actual or
                  deemed income, profits or gains earned, received or accrued,
                  or deemed to have been earned, received or accrued, on or
                  before the Completion Date; or

2.2.3             results from, or is calculated by reference to, any dividend
                  or distribution declared, paid or made, or deemed to have
                  been paid or made, on or before the Completion Date other
                  than the Pre-Completion Dividends.

2.3               If any payment due from the Covenantors under this deed will
                  be, or has been, subject to a Liability to Taxation, the
                  Purchaser shall be entitled to receive from the Covenantors
                  on demand such amount as ensures that the net receipt, after
                  Taxation, to the Purchaser in respect of the payment is the
                  same as it would have been were the payment not subject to
                  Taxation in the hands of the Purchaser.

3                 Exclusions

3.1               The indemnity in paragraph 2.1 shall not apply to any
                  Liability to Taxation or Claim for Taxation: 

3.1.1             to the extent that allowance, provision or reserve is made in
                  the Last Accounts or is specifically referred to and
                  quantified in the notes to those accounts;

3.1.2             for which the Company is, or may become, liable wholly or
                  primarily as a result of transactions in the ordinary course
                  of its business after the Last Accounts Date;

3.1.3             to the extent that the Liability to Taxation or Claim for
                  Taxation arises as a result of any increase in rates of
                  Taxation made after the Last Accounts Date;

3.1.4             which is attributable to the Company ceasing to be entitled
                  to the small companies' rate of corporation tax as a result
                  of the purchase of the Shares by the Purchaser; 

3.1.5             to the extent that it would not have arisen but for the fact
                  that the treatment in future accounts of the Company of
                  assets or liabilities, or of the Taxation attributable to
                  timing differences, is different from the treatment in the
                  Last Accounts. 

3.2               If any provision or reserve for Taxation in the Last Accounts
                  or the Completion Accounts shall at the date of any payment
                  required to be made by the Warrantors provide to have been an
                  overprovision or overreserve, then the amount of such
                  overprovision or overreserve shall be set-off against any
                  actual

                                      58

<PAGE>

                  liability of the Warrantors in respect of any claim(s) under
                  the Deed of Indemnity.

3.3               The provisions of Schedule 6 of the Agreement shall apply to
                  this deed.

4                 Mitigation

4.1               Except as provided in paragraph 4.2, the Covenantors shall be
                  liable under the indemnity in paragraph 2.1 notwithstanding
                  any Reliefs, rights of repayment, or other rights or claims
                  of a similar nature which may be available to any person
                  entitled to the benefit of the indemnity to set against or
                  otherwise mitigate any Liability to Taxation so that the
                  indemnity in paragraph 2.1 shall take effect as though the
                  Reliefs, rights of repayment, or other rights or claims were
                  not available.

4.2               The provisions of paragraph 4.1 shall not apply if and to the
                  extent that the Reliefs, rights of repayment or other rights
                  or claims arose wholly or mainly by reason of any act,
                  omission or transaction of the Company on or before the Last
                  Accounts Date.

4.3               Where and to the extent that paragraph 4.2 applies, credit
                  shall be given to the Covenantors against any liability under
                  this deed for any such Reliefs, rights of repayment or other
                  rights or claims as are mentioned in paragraph 4.1.

4.4               When the Covenantors have satisfied an obligation under this
                  deed to indemnify the Purchaser against a Liability to
                  Taxation and the Purchaser or the Company has (whether by
                  operation of law, contract or otherwise) a right of
                  reimbursement (including by way of indemnity) against any
                  other person or persons in respect of the Liability to
                  Taxation, the Purchaser shall or shall procure that the
                  Company shall take all reasonable steps to enforce the right,
                  and repay to the Covenantors any sum recovered by the
                  Purchaser or the Company by reason of the right, or shall or
                  shall procure that the Company shall, at the request and
                  expense of the Covenantors, assign the right to the
                  Covenantors, in such form as they shall reasonably require.

5                 Notification of claims

                  The Purchaser shall notify the Covenantors in writing of any
                  Claim for Taxation which comes to its or the Company's notice,
                  whereby it appears that the Covenantors are or may become
                  liable to indemnify the Purchaser under this deed as soon as
                  reasonably practicable after the date on which the Claim for
                  Taxation comes to the notice of the Purchaser and no later
                  than 10 Business Days prior to the expiry of any time limit
                  for appealing the Claim for Taxation except that failure to
                  give such notice shall not prejudice the Purchaser's right to
                  bring a claim under this deed.

                                      59

<PAGE>

6                 Dates for and quantum of payments

6.1               This clause shall apply solely for determining the date on
                  which any payments or repayments shall be made by or to the
                  Covenantors pursuant to this deed and (where expressly
                  provided) the amounts of the payments or repayments.

6.2               The Covenantors shall make payment to the Purchaser to the
                  extent that, and on the date on which, the Company discharges
                  or is deemed to discharge a Liability to Taxation in respect
                  of which the Purchaser is entitled to be indemnified under
                  this deed.

6.3               The Purchaser shall make a repayment to the Covenantors to
                  the extent that, and on the date on which, the Purchaser or
                  the Company receives any repayment of any amount paid in
                  respect of any Liability to Taxation pursuant to paragraph
                  6.2. Any repayment to the Covenantors pursuant to this
                  paragraph 6.3 shall not prejudice the rights of the Purchaser
                  against the Covenantors in the event that a further Liability
                  to Taxation is imposed upon the Company, whether in respect
                  of matters to which the repayment relates or otherwise.

6.4               For the purposes of paragraph 6.2, the Company shall be
                  deemed to discharge a Liability to Taxation:

6.4.1             on the date on which the Company pays any amount of Taxation;
                  or

6.4.2             on the date on which any Liability to Taxation would have
                  fallen due but for Reliefs, rights of repayment, or other
                  rights or claims of a similar nature to which paragraph 4.1
                  applies.

6.5               For the purpose of paragraph 6.3, the Company shall be deemed
                  to receive a repayment:

6.5.1             on the date on which the Company receives a repayment of
                  Taxation to which paragraph 6.2 applies;

6.5.2             if and when the Company would have received a repayment but
                  for a Liability to Taxation in respect of which the Company
                  is not entitled to be indemnified under this deed;

6.5.3             if and when the Company would have received a repayment had
                  the Liability to Taxation been discharged by a payment of
                  Taxation; or

6.5.4             if and when the Company is able to obtain the benefit of a
                  reduction in its Liability to Taxation as a result of the
                  right to repayment.

6.6               Upon Final Determination of a relevant Claim for Taxation the
                  Covenantors shall promptly pay to the Purchaser such amount,
                  or further amount in addition to any sums already paid under
                  this deed, as is required to cover the full liability of the
                  Covenantors under this deed.

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<PAGE>

6.7               Any dispute in relation to the provisions of paragraphs 6.4,
                  6.5 or 6.6 may be referred, by the Purchaser or the
                  Covenantors, to the auditors for the time being of the
                  Company, acting as experts and not as arbitrators, whose
                  certificate shall be final and binding upon the parties in
                  the absence of manifest error.

6.8               In lieu of making any payment under this deed to the
                  Purchaser the Covenantors shall at the direction of the
                  Purchaser be entitled to make it direct to the Inland Revenue
                  on behalf of the Company and any such payment shall pro tanto
                  discharge the obligations of the Covenantors under this deed.

7                 General

7.1               The provisions of the Agreement relating to notices shall
                  apply to notices to be given under, or in

                  connection with, this deed except that references to
                  "Warrantors" in these provisions will be deemed to be
                  references to "Covenantors".

7.2               The construction, validity and performance of this deed shall
                  be governed by the laws of England and Wales.

                  Executed by the parties as a deed on the date of this deed.

                                      61

<PAGE>

                                   SCHEDULE

Anthony Clive Davies
Barn Platt
Castle Grove Road
Chobham
Woking
Surrey  GU24 8EF

Stephen Robert Cantle
Broomrigg House
Broomrigg Road
Fleet
Hampshire  GU13 8LR

                                      62

<PAGE>

                        SCHEDULE 5 - EARNOUT PROTECTION

The Purchaser on behalf of itself, its Associates and assignees undertakes to
the Vendors that for the period from Completion to 30 June 2001, it shall
(otherwise than as required by law or pursuant to a commitment (whether legally
binding or not) created on or before Completion or otherwise than in the
ordinary course of business as carried on immediately before Completion) not
take any action or suffer anything to be done which it is reasonably able to
prevent with the intention of frustrating or preventing the maximum amount of
the Consideration being payable and being paid and (without prejudice to the
generality of the foregoing) during such period it shall exercise its powers in
relation to the Company and its rights as the beneficial owner of the whole or
the issued share capital of the Company to procure that, save with the prior
written consent of the Warrantors:

1                 the Company complies with the provisions of the Service
                  Agreement in favour of each of Clive Davies and Stephen
                  Cantle;

2                 neither the Company nor the Vendors nor any other employee of
                  the Company shall be required to provide the Purchaser or any
                  member of the Purchaser's Group or any other person with any
                  services or facilities which would cause unreasonable
                  interference with or be materially detrimental to the ability
                  of the Company to carry on its business properly, efficiently
                  and profitably;

3                 subject to the provisions of the Service Agreements Clive
                  Davies and Stephen Cantle shall have day to day operational
                  control of the Company;

4                 the Company shall not be required to make a substantial
                  change to the nature or scope of its business or trading
                  activities;

5                 no dismissal of senior employees (being a person in receipt
                  of remuneration in excess of (pound)25,000 per annum) and no
                  material change of the terms of conditions of such senior
                  employees shall be made unless such dismissal is by way of
                  summary termination in accordance with the terms of the
                  relevant terms and conditions of employment;

6                 no remuneration shall be payable by the Company for any
                  director of the Company appointed from time-to-time by or at
                  the direction of the Purchaser; 

7                 the Company will carry on its business as from time to time
                  constituted in good faith and on commercially reasonable
                  arm's length terms in the ordinary course and for its own
                  benefit and will not act with the intention of running down
                  the business of the Company in order to deprive the Vendors
                  of any Consideration; 

                                      63

<PAGE>

8                 there shall be no merger or amalgamation of the business of
                  the Company with any other company or business and the
                  Company shall not dispose of the whole of or substantially
                  the whole of its business, undertaking or assets and the
                  Company shall not cease to carry on business other than in
                  circumstances to which the provisions of the Insolvency Act
                  1986 apply; 

9                 the Company, as a wholly owned subsidiary of the Purchaser,
                  receives the benefits and advantages generally enjoyed by the
                  other subsidiaries of the Purchaser subject to payment of any
                  applicable costs, charges or expenses for such benefits and
                  advantages; 

10                other than in circumstances to which the provisions of the
                  Insolvency Act 1986 apply, the Company will not cease its
                  present trade nor will it petition for the liquidation of the
                  Company nor permit or procure the passing of a resolution for
                  a member's voluntary winding up of the Company; 

11                other than in accordance with contract or in circumstances to
                  which the provisions of the Insolvency Act 1986 apply, the
                  Purchaser will not directly or indirectly request or procure
                  the appointment of a receiver or administrator over the whole
                  or any party of the assets or undertaking of the Company; 

12                the Company does not make any change to its accounting
                  reference date save the changes of such date to 31 December
                  to be implemented on Completion;

13                the Company shall not enter into or agree to enter into any
                  joint venture, partnership or agreement or arrangement for
                  the sharing of profits or assets;

14                subject (after reasonable endeavours by the Purchaser in this
                  respect at the cost of the Company) to funds being available,
                  the Purchaser will make available to the Company sufficient
                  monies to enable the Company to carry on its business in the
                  ordinary and normal course;

15                the Company will not receive any professional services from a
                  third party, including without limitation an audit and/or any
                  accountancy and financial management services, having a cost
                  (exclusive of Value Added Tax) in excess of (pound)9,500 per
                  annum per type of service nor enter into any transaction
                  involving the purchase by the Company of any capital asset;

16                it will not and will procure that any of its Associates will
                  not directly or indirectly endeavour to entice away from the
                  Company or offer employment or a contract for service to or
                  employ or engage any present employee of the Company nor
                  directly or indirectly endeavour to entice away from the
                  Company (other than by way of a general advertisement placed
                  in the public 

                                      64

<PAGE>

                  domain) or offer employment or a contract for service to or
                  employee or engage any present employee of the Company;

17                no management charges, service charges or other related costs
                  or any property charges paid by the Company to the Purchaser
                  or any of the Purchaser's subsidiaries shall be incurred by
                  the Company;

18                the Company shall not be required to relocate the whole or a
                  material part of its business to new premises or office
                  accommodation outside the radius of 40 miles from its current
                  premises;

19                the Company shall not pay any dividends, other than as
                  provided in clause 6.9 and shall not make any loans to or
                  replay any loans from the Purchaser and/or any Associated.

                                      65

<PAGE>

                     SCHEDULE 6 - LIMITATIONS OF LIABILITY

Notwithstanding anything in this agreement to the contrary, the provisions of
this Schedule shall operate to limit the liability of the Warrantors in respect
of any Warranty Claim by the Purchaser.

1                 LIMITATIONS ON QUANTUM

1.1               Save in the event of fraud or dishonesty or gross negligence
                  on the part of the Warrantors: 

1.1.1             subject to paragraphs 1.1.2, 1.1.3 and 1.1.4, the total
                  liability of the Warrantors for breach of the Warranties or
                  under the Deed of Indemnity shall not in any event exceed an
                  amount equal to the aggregate of the Consideration actually
                  received by the Vendors from time-to-time together with the
                  Pre-Completion Dividends; the Bonus and plus (pound)18,000;

1.1.2             the Warrantors shall not be liable in respect of any
                  individual claim under the Warranties or the Deed of
                  Indemnity unless the amount that would otherwise be
                  recoverable from the Warrantors in respect of such claim but
                  for this paragraph exceeds (pound)2,000; 

1.1.3             subject to paragraph 1.1.2, the Warrantors shall not be
                  liable in respect of any claim or claims under the Warranties
                  or the Deed of Indemnity unless and until (and then in
                  respect of all such claims and not merely the excess) the
                  aggregate amount that would otherwise be recoverable from the
                  Warrantors in respect of all such claims shall exceed
                  (pound)50,000; 

1.1.4             the total liability of each of the Warrantors shall in
                  respect of all claims under the Warranties and/or the Deed of
                  Indemnity be limited to the aggregate of (pound)2,000,000 and
                  one half of the amount of the First Deferred Payment and the
                  Second Deferred Payment actually paid by the Purchaser from
                  time-to-time;

1.1.5             the amount of any claim(s) under the Warranties or under the
                  Deed of Indemnity in respect of any particular matter or
                  circumstance shall be counted only once, so that the
                  Purchaser shall not be entitled to aggregate any claims which
                  it may make (or be entitled to make) under the Warranties
                  and/or the Deed of Indemnity in respect of that particular
                  matter or circumstance. 

1.2               Nothing in this schedule shall in any way restrict or limit
                  the general obligation of the Purchaser to mitigate any loss
                  or damage which it may suffer in consequence of any breach of
                  this agreement.

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<PAGE>

2                 TIME LIMITS FOR BRINGING CLAIM

                  Save in the event of fraud, no claim shall be brought against
                  the Warrantors in respect of any breach of the Warranties or
                  under the Deed of Indemnity unless the Purchaser shall have
                  given to the Warrantors written notice of such claim
                  specifying (in reasonable detail) the matter which gives rise
                  to the breach or claim, the nature of the breach or claim and
                  an estimate of the amount claimed:

                  (a)   on or before the date of the sixth anniversary of
                        Completion in respect of claims relating to Taxation; or

                  (b)   on or before the date of the second anniversary of
                        Completion in respect of any other matters; 

                  PROVIDED that the liability of a Warrantor under this
                  paragraph shall absolutely determine (if such claim has not
                  been previously satisfied, settled or withdrawn) if legal
                  proceedings in respect of such claim have not been commenced
                  within twelve months of the service of such notice and for
                  this purpose proceedings shall not be deemed to have been
                  commenced unless they have been properly issued and validly
                  served upon that Warrantor.

3                 CONDUCT OF WARRANTY CLAIMS

                  Upon the Purchaser becoming aware of any claim, act or demand
                  against it or matter likely to give rise to any of these in
                  respect of the Warranties or the Deed of Indemnity, the
                  Purchaser shall:

                  (a)   forthwith notify the Warrantors in writing as soon as it
                        appears to the Purchaser that any assessment or claim
                        of a third party received by or coming to the notice of
                        the Purchaser may result in a Warranty Claim (except
                        that failure by the Purchaser to give such notice shall
                        not prejudice its ability to bring a Warranty Claim or
                        to effect set-off pursuant to clause 3.6);

                  (b)   make no admission of liability, agreement, settlement or
                        compromise with any third party in relation to any such
                        Warranty Claim without having first consulted the
                        Warrantors.

4                 ACTS OF THE PURCHASER

                  No claim shall lie against the Warrantors under the Warranties
                  or under the Deed of Indemnity if such claim is wholly or
                  partly attributable to any voluntary act, omission,
                  transaction or arrangement carried out by the Purchaser or on
                  its behalf or by persons deriving title from the Purchaser or
                  the cessation of 

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<PAGE>

                  any business carried on by the Company in any case on or
                  after Completion otherwise than as required by law or
                  pursuant to a commitment (whether legally binding or not)
                  created on or before Completion

5                 LAST ACCOUNTS

                  No matter shall be the subject of a claim for breach of any of
                  the Warranties or under the Deed of Indemnity to the extent
                  that allowance, provision or reserve in respect of such matter
                  shall have been made in the Last Accounts or has been included
                  in calculating creditors or deducted in calculating debtors in
                  the Last Accounts or shall have been otherwise taken account
                  of or reflected in the Last Accounts.

6                 COMPLETION ACCOUNTS

                  No matter shall be the subject of a claim for breach of any
                  of the Warranties or under the Deed of Indemnity to the
                  extent that allowance, provision or reserve in respect of
                  such matters shall have been made in the Completion Accounts
                  or has been included in calculating creditors or deducted in
                  calculating debtors in the Completion Accounts or shall have
                  been otherwise taken into account or reflected in the
                  Completion Accounts and in all cases which shall have
                  resulted in a reduction in the Consideration pursuant to
                  clause 5.5.

7                 RECOVERY FROM THIRD PARTIES

                  If the Warrantors pay at any time to the Purchaser an amount
                  pursuant to a claim in respect of the Warranties or under the
                  Deed of Indemnity and the Purchaser subsequently recovers
                  from some other person any sum in respect of any matter
                  giving rise to such claim, the Purchaser shall as soon as
                  practicable repay to the Warrantors so much of the amount
                  paid to the Purchaser as does not exceed the sum recovered
                  from such other person less all costs, charges and expenses
                  properly incurred by the Purchaser in recovering that sum
                  from such other person.

8                 RETROSPECTIVE LEGISLATION

                  No liability shall arise in respect of any breach of any of
                  the Warranties or under the Deed of Indemnity to the extent
                  that liability for such breach occurs or is increased wholly
                  or partly as a result of any legislation not in force at the
                  date hereof which takes effect retrospectively.

                                      68

<PAGE>

9                 TAXATION

9.1               The Warrantors shall have no liability in respect of a
                  Warranty Claim to the extent that such claim would not have
                  occurred or arisen but for any change in the basis of, method
                  of calculation of, or increase in the rate or rates of
                  Taxation or changes in the practice of the Inland Revenue
                  made or coming into effect after the date of this agreement
                  or the withdrawal of any extra-statutory concession currently
                  granted by any tax authority.

9.2               The Warrantors shall have no liability in respect of a
                  Warranty Claim to the extent that such claim occurs or arises
                  or is increased as a result of any change made after
                  Completion in any accounting or taxation policies or practice
                  of the Company, the Purchaser or the Purchaser's Group.

10                NO LIABILITY FOR CONTINGENT OR NON-QUANTIFIABLE CLAIMS

                  If any breach of the Warranties or liability under the Deed
                  of Indemnity arises by reason of some liability which, at the
                  time such breach or claim is notified to the Warrantors, is
                  contingent only or otherwise not capable of being quantified,
                  then the Warrantors shall not be under any obligation to make
                  any payment in respect of such breach or claim unless and
                  until such liability ceases to be contingent or becomes
                  capable of being quantified, as the case may be. So long as
                  such claim shall have been notified to the Warrantors in
                  accordance with paragraph 2 above, as appropriate, then the
                  proviso to that paragraph shall be amended in relation to
                  such claim so as to require that legal proceedings be
                  commenced within twelve months from the date on which the
                  said liability ceases to be contingent or becomes capable of
                  being quantified, as the case may be, in order for the
                  liability of the Warrantors not to determine.

11                INFORMATION OF THE PURCHASER

                  The Purchaser acknowledges and declares that in entering into
                  this agreement it has not relied and is not relying on any
                  warranties, representations, covenants, undertakings,
                  indemnities, promises, forecasts or other statements
                  whatsoever whether written or oral (and whether implied or
                  otherwise) (collectively "Representations"), other than those
                  expressly set out in this agreement and in the Deed of
                  Indemnity, and the Purchaser hereby irrevocably and
                  unconditionally waives any right it may have to claim damage
                  for, or to rescind this agreement by reason of, any
                  Representation not 

                                      69

<PAGE>

                  expressly set out in this agreement or the Deed of Indemnity
                  unless such Representation was made fraudulently.

12                PAYMENT OF CLAIM TO BE REDUCTION IN PURCHASE PRICE

                  Any payment made by the Warrantors in respect of any claim
                  under the Warranties or the Deed of Indemnity shall be deemed
                  to be a reduction in the Consideration.

13                INSURANCE

                  No claim shall lie against the Warrantors under the Warranties
                  if such claim is wholly or partly recoverable by the Purchaser
                  or the Company or any member of the Purchaser's Group under
                  the terms of any insurance policy of the Company which is in
                  force as at the date of Completion.


                                      70

<PAGE>

EXECUTED and DELIVERED as a deed            )
by ANTHONY CLIVE DAVIES in the              )     /s/ Anthony Clive Davies
presence of:                                )


Witness signature: /s/ Scott Lesner

Witness name: Scott Lesner

Witness address: 146 Regal Way, Kenton, Harrow, Middx, HA3, O5Q

Occupation: Trainee Solicitor

EXECUTED and DELIVERED as a deed            )
by STEPHEN ROBERT CANTLE in the             )     /s/ Stephen Robert Cantle
presence of:                                )


Witness signature: /s/ Scott Lesner

Witness name: Scott Lesner

Witness address: 146 Regal Way, Kenton, Harrow, Middx, HA3, O5Q

Occupation: Trainee Solicitor

EXECUTED and DELIVERED as a deed            )
by LESLEY DAVIES in the                     )     /s/ Anthony Clive Davies
presence of:                                )     As Attorney for Lesley Davies


Witness signature: /s/ Scott Lesner

Witness name: Scott Lesner

Witness address: 146 Regal Way, Kenton, Harrow, Middx, HA3, O5Q

Occupation: Trainee Solicitor

                                      71

<PAGE>

EXECUTED and DELIVERED as a deed            )
by ALISON CANTLE in the                     )     /s/ Stephen Robert Cantle
presence of:                                )     As Attorney for Alison Cantle


Witness signature: /s/ Scott Lesner

Witness name: Scott Lesner

Witness address: 146 Regal Way, Kenton, Harrow, Middx, HA3, O5Q

Occupation: Trainee Solicitor

EXECUTED and DELIVERED as a deed            )
by HEALTHWORLD HOLDINGS LIMITED             )
acting by:                                  )

                                                  /s/ Stuart Diamond
                                                  Director

                                                  /s/ Andrew J. Turnbull
                                                  Company Secretary

                                      72

</TABLE>


<PAGE>



DATED:   24th July 1998
- -----
PARTIES:
- -------

1.       "Covenantors":    The persons whose names/addresses are set out in the
         -------------     schedule



2.       "Purchaser":      Healthworld Holdings Limited (registered number
         -----------       3458882) whose registered office is at 1 Thames
                           Street, Windsor, Berkshire SL4 1PL

RECITAL
- -------

This deed is entered into in accordance with an agreement (the "Agreement") made
between the Covenantors and the Purchaser relating to the acquisition of the
entire issued share capital of Colwood House Medical Publication (UK) Limited
(registered in England and Wales under no: 2213846).

1        Definitions

1.1      In this deed:

1.1.1    the same meaning is given to words and expressions defined in the
         Agreement except where otherwise provided or expressly defined below;

1.1.2    "Taxation" means all forms of taxation, duties and levies whatsoever
         and whenever imposed, whether by governmental or other authority and
         whether of the United Kingdom or elsewhere, and (without limitation)
         includes:

1.1.3    income tax, corporation tax, capital gains tax, inheritance tax, stamp
         duty, value added tax, customs and other import duties and national
         insurance contributions and any payment whatsoever which the Company
         may be or become bound to make to any person as a result of any
         enactment relating to taxation and any other taxes, duties or levies
         supplementing or replacing any of the above;

1.1.4    all interest, fines and penalties incidental, or relating, to any such
         taxation, duties or levies, whatsoever.

1.2      "Relief" includes (without limitation) any loss, relief, allowance,
         exemption, set-off or deduction in computing, or against, profits,
         income or gains of any description or from any source, or credit
         against Taxation.

1.3      "Liability to Taxation" means any liability to make a payment in
         respect of Taxation but does not include:-

1.3.1    the loss, counteracting or clawing back of any Relief which would
         otherwise have been available to the Company;

1.3.2    the nullifying, cancellation or set-off of a right to repayment of
         Taxation which would otherwise have been available to the Company;


<PAGE>

         PROVIDED however that if the loss, counteracting or clawing back of any
         Relief referred to in paragraph 1.3.1, or the nullifying, cancellation
         or set-off of a right to repayment as referred to in paragraph 1.3.2
         results in a liability of the Company to make a payment in respect of
         Taxation in respect of an accounting period commencing prior to
         Completion, that liability shall itself be a "Liability to Taxation"
         for the purposes of this deed.

1.4      "Claim for Taxation" includes (without limitation) any notice, demand,
         assessment, letter or other document issued, or action taken, by or on
         behalf of the Inland Revenue or Customs and Excise authorities or any
         other statutory or governmental authority or body whatsoever in any
         part of the world or any form of self-assessment under the Pay and File
         system introduced by the Finance Act 1990, whereby the Company is, or
         is likely to be, subject to a Liability to Taxation (whether or not it
         is primarily payable by the Company and whether or not the Company has,
         or may have, any right of reimbursement).

1.5      "Final Determination" means, in relation to a Claim for Taxation where
         there is an appeal against that assessment or self-assessment:

1.5.1    an agreement under section 54 Taxes Management Act 1970 or any
         legislative provision corresponding to that section;

1.5.2    a decision of a court or tribunal from which either no appeal lies or
         in respect of which no appeal is made within the prescribed time limit.

1.6      References to paragraphs are to paragraphs of this deed, unless
         otherwise stated.

2.       Covenant
         --------

2.1      Subject as provided below, the Covenantors jointly and severally
         covenant with the Purchaser that they will indemnify the Purchaser
         against:

2.1.1    any Liability to Taxation or any depletion in the value of the assets
         of the Company, arising by reason of, or in consequence of, or in
         connection with, any Liability to Taxation; and

2.1.2    the costs, charges and expenses reasonably incurred by the Company in
         relation to any demands, actions, proceedings and claims in respect of
         Liabilities to Taxation or Claims for Taxation.

2.2      The covenant in paragraph 2.1 shall apply only where the Liability to
         Taxation or the Claim for Taxation:-

2.2.1    results from or is made wholly or partly in respect of or in
         consequence of any acts, omissions or transactions whatsoever of the
         Company occurring or entered into on or before the Completion Date; or

                                       2

<PAGE>

2.2.2    results from, or is calculated by reference to, any actual or deemed
         income, profits or gains earned, received or accrued, or deemed to have
         been earned, received or accrued, on or before the Completion Date; or

2.2.3    results from, or is calculated by reference to, any dividend or
         distribution declared, paid or made, or deemed to have been paid or
         made, on or before the Completion Date other than the Pre-Completion
         Dividends.

2.3      If any payment due from the Covenantors under this deed will be, or has
         been, subject to a Liability to Taxation, the Purchaser shall be
         entitled to receive from the Covenantors on demand such amount as
         ensures that the net receipt, after Taxation, to the Purchaser in
         respect of the payment is the same as it would have been were the
         payment not subject to Taxation in the hands of the Purchaser.

3        Exclusions
         ----------
 
3.1      The indemnity in paragraph 2.1 shall not apply to any Liability to
         Taxation or Claim for Taxation:

3.1.1    to the extent that allowance, provision or reserve is made in the Last
         Accounts or is specifically referred to and quantified in the notes to
         those accounts;

3.1.2    for which the Company is, or may become, liable wholly or primarily as
         a result of transactions in the ordinary course of its business after
         the Last Accounts Date;

3.1.3    to the extent that the Liability to Taxation or Claim for Taxation
         arises as a result of any increase in rates of Taxation made after the
         Last Accounts Date;

3.1.4    which is attributable to the Company ceasing to be entitled to the
         small companies' rate of corporation tax as a result of the purchase of
         the Shares by the Purchaser;

3.1.5    to the extent that it would not have arisen but for the fact that the
         treatment in future accounts of the Company of assets or liabilities,
         or of the Taxation attributable to timing differences, is different
         from the treatment in the Last Accounts.

3.2      If any provision or reserve for Taxation in the Last Accounts or the
         Completion Accounts shall at the date of any payment required to be
         made by the Warrantors provide to have been an overprovision or
         overreserve, then the amount of such overprovision or overreserve shall
         be set-off against any actual liability of the Warrantors in respect of
         any claim(s) under the Deed of Indemnity.

3.3      The provisions of Schedule 6 of the Agreement shall apply to this deed.

                                       3

<PAGE>



4        Mitigation
         ----------

4.1      Except as provided in paragraph 4.2, the Covenantors shall be liable
         under the indemnity in paragraph 2.1 notwithstanding any Reliefs,
         rights of repayment, or other rights or claims of a similar nature
         which may be available to any person entitled to the benefit of the
         indemnity to set against or otherwise mitigate any Liability to
         Taxation so that the indemnity in paragraph 2.1 shall take effect as
         though the Reliefs, rights of repayment, or other rights or claims were
         not available.

4.2      The provisions of paragraph 4.1 shall not apply if and to the extent
         that the Reliefs, rights of repayment or other rights or claims arose
         wholly or mainly by reason of any act, omission or transaction of the
         Company on or before the Last Accounts Date.

4.3      Where and to the extent that paragraph 4.2 applies, credit shall be
         given to the Covenantors against any liability under this deed for any
         such Reliefs, rights of repayment or other rights or claims as are
         mentioned in paragraph 4.1.

4.4      When the Covenantors have satisfied an obligation under this deed to
         indemnify the Purchaser against a Liability to Taxation and the
         Purchaser or the Company has (whether by operation of law, contract or
         otherwise) a right of reimbursement (including by way of indemnity)
         against any other person or persons in respect of the Liability to
         Taxation, the Purchaser shall or shall procure that the Company shall
         take all reasonable steps to enforce the right, and repay to the
         Covenantors any sum recovered by the Purchaser or the Company by reason
         of the right, or shall or shall procure that the Company shall, at the
         request and expense of the Covenantors, assign the right to the
         Covenantors, in such form as they shall reasonably require.

5        Notification of claims
         ----------------------

         The Purchaser shall notify the Covenantors in writing of any Claim for
         Taxation which comes to its or the Company's notice, whereby it appears
         that the Covenantors are or may become liable to indemnify the
         Purchaser under this deed as soon as reasonably practicable after the
         date on which the Claim for Taxation comes to the notice of the
         Purchaser and no later than 10 Business Days prior to the expiry of any
         time limit for appealing the Claim for Taxation except that failure to
         give such notice shall not prejudice the Purchaser's right to bring a
         claim under this deed.

                                       4

<PAGE>



6        Dates for and quantum of payments
         ---------------------------------

6.1      This clause shall apply solely for determining the date on which any
         payments or repayments shall be made by or to the Covenantors pursuant
         to this deed and (where expressly provided) the amounts of the payments
         or repayments.

6.2      The Covenantors shall make payment to the Purchaser to the extent that,
         and on the date on which, the Company discharges or is deemed to
         discharge a Liability to Taxation in respect of which the Purchaser is
         entitled to be indemnified under this deed.

6.3      The Purchaser shall make a repayment to the Covenantors to the extent
         that, and on the date on which, the Purchaser or the Company receives
         any repayment of any amount paid in respect of any Liability to
         Taxation pursuant to paragraph 6.2. Any repayment to the Covenantors
         pursuant to this paragraph 6.3 shall not prejudice the rights of the
         Purchaser against the Covenantors in the event that a further Liability
         to Taxation is imposed upon the Company, whether in respect of matters
         to which the repayment relates or otherwise.

6.4      For the purposes of paragraph 6.2, the Company shall be deemed to
         discharge a Liability to Taxation:

6.4.1    on the date on which the Company pays any amount of Taxation; or

6.4.2    on the date on which any Liability to Taxation would have fallen due
         but for Reliefs, rights of repayment, or other rights or claims of a
         similar nature to which paragraph 4.1 applies.

6.5      For the purpose of paragraph 6.3, the Company shall be deemed to
         receive a repayment:

6.5.1    on the date on which the Company receives a repayment of Taxation to
         which paragraph 6.2 applies;

6.5.2    if and when the Company would have received a repayment but for a
         Liability to Taxation in respect of which the Company is not entitled
         to be indemnified under this deed;

6.5.3    if and when the Company would have received a repayment had the
         Liability to Taxation been discharged by a payment of Taxation; or

6.5.4    if and when the Company is able to obtain the benefit of a reduction in
         its Liability to Taxation as a result of the right to repayment.

6.6      Upon Final Determination of a relevant Claim for Taxation the
         Covenantors shall promptly pay to the Purchaser such amount, or further
         amount in addition to any sums already paid under this deed, as is
         required to cover the full liability of the Covenantors under this
         deed.

                                       5

<PAGE>


6.7      Any dispute in relation to the provisions of paragraphs 6.4, 6.5 or 6.6
         may be referred, by the Purchaser or the Covenantors, to the auditors
         for the time being of the Company, acting as experts and not as
         arbitrators, whose certificate shall be final and binding upon the
         parties in the absence of manifest error.

6.8      In lieu of making any payment under this deed to the Purchaser the
         Covenantors shall at the direction of the Purchaser be entitled to make
         it direct to the Inland Revenue on behalf of the Company and any such
         payment shall pro tanto discharge the obligations of the Covenantors
         under this deed.

7        General
         -------

7.1      The provisions of the Agreement relating to notices shall apply to
         notices to be given under, or in connection with, this deed except that
         references to "Warrantors" in these provisions will be deemed to be
         references to "Covenantors".

7.2      The construction, validity and performance of this deed shall be
         governed by the laws of England and Wales.

         Executed by the parties as a deed on the date of this deed.




                                       6


<PAGE>



                                    SCHEDULE


Anthony Clive Davies
Barn Platt
Castle Grove Road
Chobham
Woking
Surrey  GU24 8EF

Stephen Robert Cantle
Broomrigg House
Broomrigg Road
Fleet
Hampshire  GU13 8LR




<PAGE>


EXECUTED and DELIVERED as a deed            )
by ANTHONY CLIVE DAVIES in the              )  /s/ Anthony Clive Davies
presence of:                                )


Witness signature:  [illegible]


Witness name:  [illegible]


Witness address:  [illegible]


Occupation:  Solicitor


EXECUTED and DELIVERED as a deed            )
by STEPHEN ROBERT CANTLE in the             )  /s/ Stephen Robert Cantle
presence of:                                )


Witness signature:  [illegible]


Witness name:  As above


Witness address:

Occupation:


EXECUTED and DELIVERED as a deed            )
by HEALTHWORLD HOLDINGS LIMITED             )  /s/ Stuart Diamond
acting by:                                  )


                                            Director

                                            /s/ Andrew J. Turnbull

                                            Company Secretary



<PAGE>



                     [Healthworld Corporation Letterhead]


                                                     Contact:  Steven Girgenti
                                                       Chief Executive Officer
                                                       Healthworld Corporation
                                                                (212) 625-4216

                                                                Stuart Diamond
                                                       Chief Financial Officer
                                                       Healthworld Corporation
                                                                (212) 625-4249

                                                         FOR IMMEDIATE RELEASE

                 HEALTHWORLD CORPORATION ACQUIRES TORRENT S.A.

         New York, New York, July 28, 1998 - Healthworld Corporation (NASDAQ:
HWLD), announced today the acquisition of 80% of Torrent S.A., France's
leading independent healthcare communications agency. Torrent, formed in 1986,
has been operating as a licensee of Healthworld B.V. since 1993. The Company
reported 1997 revenues of $4.4 million and has 31 full-time employees. Torrent
clients include Glaxo Wellcome, Rhone Poulenc Rorer, and Boots Healthcare. A
recently won contract was for Pfizer's Viagra.
         The purchase price for the 80% interest was $2.56 million.
Healthworld has an option to acquire the remaining 20% of Torrent S.A., which
will continue to be held by Mr. Dominique Agostini, founder of the company.
Mr. Agostini will remain as President and be instrumental in expanding the
business by adding existing Healthworld services not presently offered by
Torrent.
         "Torrent is one of the most respected and successful healthcare
communications companies in Europe winning the French Healthcare Agency of the
Year honors in 1996 and the recipient of the 1997 Best Ad Award in France. The
acquisition of Torrent is the first of the Healthworld B.V. affiliates. With
France being the second largest pharmaceutical market in Europe, Torrent
represents an important growth opportunity for Healthworld," Steven Girgenti,
Chairman and Chief Executive Officer of Healthworld Corporation commented.
         Healthworld is an international marketing and communications services
company specializing in healthcare. The company provides many of the world's
largest pharmaceutical and other healthcare companies with a comprehensive
range of integrated strategic marketing services designed to accelerate the
market acceptance of new products and to sustain marketability throughout
their life cycles, including advertising and promotion, contract sales,
consulting, publishing, medical education, public relations, interactive
multimedia, database marketing and marketing research services.
         This press release contains statements which constitute
forward-looking statements within the meaning of Section 27A of the Securities
Act of 1933, as amended, and Section 21E of the Securities Exchange Act of
1934, as amended. Those statements include statements regarding the intent,
belief or current expectations of the Company and its management team.
Prospective investors are cautioned that any such forward-looking statements
are not guarantees of future performance and involve risks and uncertainties,
and that actual results may differ materially from those projected in the
forward-looking statements. Such risks and uncertainties include, among other
things, competitive, economic and regulatory factors in the health care
marketing and communications industry and the pharmaceutical and health care
industry, general economic conditions and other risks and uncertainties that
may be detailed, from time-to-time, in Healthworld's reports filed with the
Securities and Exchange Commission.




<PAGE>



(BW) (HEALTHWORLD) (HWLD) Healthworld Corporation Acquires Colwood House

         NEW YORK -- (BUSINESS WIRE) -- July 27, 1998 -- Healthworld
Corporation (NASDAQ: HWLD), announced today the acquisition of Colwood House
Medical Publications, a leading UK medical education company. Colwood's
services include communications strategy and planning, publications
management, opinion leader and Advisory Group management, medical writing,
medical journalism, public relations and symposia development and management.
Colwood House reported Fiscal 1997 gross revenues of $4.3 million, net
revenues of $3.4 million, and has a staff of 44 full-time employees. Current
clients include most of the top European-based companies: Roche-Basle, Bayer,
Glaxo Wellcome, Roche-UK, Glaxo-UK, Allen & Hanbury, SmithKline Beecham,
Knoll, Janssen, Schering and Pharmacia & Upjohn.
         Healthworld acquired Colwood House, for an initial purchase price of
approximately $6.6 million paid in cash at closing, plus up to an additional
$5.6 million in the aggregate paid in cash in two installments in April 2000
and August 2001, if future operating earnings of Colwood House exceed
established target levels. As part of the transaction Healthworld has entered
into employment agreements with Clive Davies and Stephen Cantle, Joint
Managing Directors of Colwood.
         "Colwood is a perfect complement to our current U.S. and Europe-based
communications business. Colwood represents a tremendous growth opportunity in
medical education and will add to the overall profitability of Healthworld,"
said Steven Girgenti, Chairman and Chief Executive Officer of Healthworld.
"Colwood's experience and expertise in internationally focused communications
programs, especially pre-product launches provides the group with excellent
business development opportunities. The acquisition will also allow us to
realize strong synergies with Medical Education Technologies, our wholly-owned
medical education subsidiary in the U.S."
         Davies enthusiastically commented: "This move allows Colwood for the
first time to develop its existing international business outside of Europe
and augment its existing services with the specialized branding, advertising,
design and related services of the Healthworld companies. Healthworld's
communications expertise in the U.S. will enhance our strategic consultancy
throughout the product cycle."
         Healthworld is an international marketing and communications services
company specializing in healthcare. The company provides many of the world's
largest pharmaceutical and other healthcare companies with a comprehensive
range of integrated strategic marketing services designed to accelerate the
market acceptance of new products and to sustain marketability throughout
their life cycles, including advertising and promotion, contract sales,
consulting, publishing, medical education, public relations, interactive
multimedia, database marketing and marketing research services.
         This press release contains statements which constitute
forward-looking statements within the meaning of Section 27A of the Securities
Act of 1933, as amended, and Section 21E of the Securities Exchange Act of
1934, as amended. Those statements include statements regarding the intent,
belief or current expectations of the Company and its management team.
Prospective investors are cautioned that any such forward-looking are not
guarantees of future performance and involve risks and uncertainties, and that
actual results may differ materially from those projected in the
forward-looking statements. Such risks and uncertainties include, among other
things, competitive, economic and regulatory factors in the health care
marketing and communications industry and the pharmaceutical and health care
industry, general economic

<PAGE>

conditions and other risks and uncertainties that may be detailed, from
time-to-time, in Healthworld's reports filed with the Securities and Exchange
Commission.


         CONTACT:          Steven Girgenti
                            Chief Executive Officer
                            Healthworld Corporation
                                (212) 625-4216
                              or
                           Stuart Diamond
                            Chief Financial Officer
                            Healthworld Corporation
                                (212) 625-4249



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