<PAGE>


                      DATED 11th MARCH 1993



                    BANTRY INVESTMENTS LIMITED

                             -AND-

                  TONY STONE ASSOCIATES LIMITED


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


                             LEASE


          OF PART GROUND FLOOR, 116/134 BAYHAM STREET
                      CAMDEN TOWN, LONDON NW1


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



                            Reid Minty
                         92 Seymour Place
                              London
                             W1H 5DB

<PAGE>

THIS LEASE is made the eleventh day of March __, 19__ BETWEEN BANTRY
INVESTMENTS LIMITED a Company register Gibraltar whose registered office is
at Library Ramp PO BOX 104 Gibraltar and whose address in the United Kingdom
is c/o Fox Associates 1 Bayham Street London NW1 OER (hereinafter called "the
Landlord") of the one part and TONY STONE ASSOCIATES LIMITED a Company
registered in England and having its registered office at 116 Bayham Street
London NW1 OBA (hereinafter called "the Tenant") of the other part
WITNESSETH as follows:

1.   PARTICULARS AND INTERPRETATION IN THIS LEASE

1.1  The expression "the Landlord" shall where the context so admits include
     the person for the time being entitled to the reversion immediately
     expectant on the determination of the term hereby created;

1.2  The expression "the Tenant" shall where the context so admits include
     its successors in title and permitted assign;

1.3  Words importing the neuter gender include the masculine and feminine
     genders;

1.4  Words importing the singular number only include the plural number and
     vice versa and where there are two or more persons included in the
     expressions "the Tenant" "and the Guarantor" respectively covenants
     expressed to be made by the Tenant and the Guarantor  respectively shall
     be deemed to be made by such persons jointly and severally;

1.5  The expression "Superior Landlord" shall mean any Landlord (other than
     the Landlord) holding an estate or interest in reversion on the Premises
     or on the said term whether immediate to the Landlord or otherwise;

1.6  Such of the division walls as divide the Premises from other premises of
     the Landlord shall be deemed to be party walls or fences and to belong
     in equal moieties (considered as divided vertically down the middle
     throughout the whole length) to the property on either side thereof

1.7  The expression "the Previous Lease" means the Lease of premises situated
     on the basement First and Second Floors of the building known as 116/134
     Bayham Street, Camden Town, London NW1 dated the 23rd day of October
     1990 and made between the Landlord  (1) and the Tenant (2) for a term of
     twenty five years from the 23rd day of October 1990

2.   DEMISE AND RENTS

IN consideration of the rents and the Tenant's covenants hereinafter reserved
and contained the Landlord HEREBY DEMISES unto the Tenant ALL THOSE the
premises ("the Premises") being part Ground Floor of the building situate and
known as 116/134 Bayham Street Camden Town London NWl ("the Building") as the
same is shown edged red on the plan ("the Plan") annexed hereto and includes:

(i)       all doors and windows and window and door frames and the glass
          (including any plate glass) fitted therein (but excluding the
          paintwork and decoration of the external surfaces of such doors
          windows and window frames):

<PAGE>


(ii)      on half (severed vertically) of all non-structural partitions
          separating the Premises from any other part of the Building;

(iii)     all other internal non-structural partitions;

(iv)      the ceilings and floors;

(v)       the plaster or other finish on all structural walls and ceilings
          within the Premises;

(vi)      all pipes and sanitary and water apparatus which are within the
          Premises and serve the Premises alone

but excludes:

(i)       the main structure of the Building including (but not by way of
          limitation) the roof and the roof joists above the ceilings of
          premises in the Building the foundations and the exterior and the
          load bearing columns and walls the main beams decks or girders
          supporting the floors of the Building of any premises comprised
          within  the Building ("the Main Structure");

(ii)      any pipes and other service conduits in the Premises which serve
          any other part of the Building.

TOGETHER with the easements and rights set out in Part 1 of the First
Schedule hereto but except and reserving from the demise in favour of the
Landlord and the tenants and occupiers of other portions of the Building of
which the Premises form part and other persons entitled thereto the easements
and rights set out in Parl 2 of the First Schedule hereof

TO HOLD unto the Tenant for a term of twenty five years from (and including)
the 23rd day of October 1990 and expiring on the 22nd day of October 2015
("the Term") subject to the restrictive covenants conditions stipulations
exceptions reservations easements and other matters referred to or contained
in the Entries on the Register at H M Land Registry of the Landlord's Title
Number NGL468360 YIELDING AND PAYING therefor unto the Landlord yearly during
the Term and so in proportion for any less time than a year the respective
rents following (that is to say):

FIRST from the commencement date of the Term until the 2nd day of September
1993 the rent of a peppercorn (if demanded)

And thereafter from (and including) the third day of September 1993 until the
22nd day of April 1994 the exclusive yearly rent of FORTY ONE THOUSAND SEVEN
HUNDRED AND SIXTY  POUNDS (L41,760.00)

And thereafter from (and including) the 23rd day of April 1994 until the 22nd
day of April 1995 the exclusive yearly rent of FORTY SIX THOUSAND AND EIGHTY
POUNDS (L46,080.00) and thereafter from (and including) the 23rd day of April
1995 until the 22nd day of October 1995 the exclusive yearly rent of FIFTY
THOUSAND FOR HUNDRED POUNDS (L50,400.00)

And thereafter for the next five years of the Term ("the second period")
either the yearly rent reserved above or the market rent (as hereinafter
defined) of the Premises at the commencement of the said period whichever is
the higher

<PAGE>

And thereafter for the next five years of the Term ("the third period")
either the yearly rent reserved above and payable immediately prior to the
commencement of the third period or the market rent (as hereinafter defined)
of the Premises at the commencement of the said period whichever is the higher

And thereafter for the next five years of the Term ("the fourth period")
either the yearly rent reserved above and payable immediately prior to the
commencement of the fourth period or the market rent (as hereinafter defined)
of the premises at the commencement of the said period whichever is the higher

And thereafter for the last five years for the Term ("the last period")
either the yearly rent reserved above and payable immediately prior to the
commencement of the last period or the market rent (as hereinafter defined)
of the premises at the commencement of the said period whichever is the
higher

the said rents in all cases to be paid without any deduction (except
for tax authorised by statutory to be deducted) by equal quarterly payments
in advance on the usual quarter days in every year ("the Rent Payment Days")
and the Tenant shall give to the Bankers for the time being of the Landlord
(as nominated from time to time in writing by the Landlord to the Tenant) a
standing order directing such quarterly payments to be made on the due dates
at the Bankers of the Landlords the first of such rent payments to be a
proportionate part for the period from the date ("the first Rent Payment
Date") hereof to the date one day before the next Rent Payment Date and shall
be made on the execution hereof

SECONDLY by way of further or additional rent an amount equal to a fair
proportion (to be determined failing agreement by the Landlord's Surveyor
whose determination shall be final and binding on the parties hereto save in
case of manifest error) of the yearly sum or sums properly expended by or
demanded of the Landlord in insuring the Building, and the Landlord's
fixtures and fittings therein against loss or damage by fire explosion
lightning impact vehicles aircraft (not being hostile aircraft) and articles
dropped therefrom flood storm or tempest bursting and overflowing of water
tanks apparatus or pipes riot civil commotion malicious damage theft
following forcible and violent entry into or exit from the Premises
subsidence and accidental damage and against such other risks as the Landlord
shall reasonably think necessary ("the Insured Risks") in a sum equal to the
full cost of reinstatement (including Architects' and Surveyors' fees
demolition and site clearance charges and three years' loss of rent such
amount to be paid by the Tenant within 14 days of demand

THIRDLY by way of further or additional rent due in each year of the Term a
Service Charge equal to such proportion of the total cost ("the total cost")
incurred or estimated by the Landlord in respect of the Services and Expenses
specified in the Third Schedule to the Previous Lease and the costs of the
Landlord carrying out its obligations set out herein as the Area of the
premises bears to the aggregate Area of all other parts of the Building let
or intended to be let by the Landlord (the expression "Area" means the Net
Internal Area measured in accordance with the Code of Measuring Practice
issued by the Royal Institution of Chartered Surveyors and the Incorporated
Society of Valuers and Auctioneers as amended from time to time) such Service
Charge to be calculated and payable in accordance with the following
provisions

(1)  The Service Charge shall be payable in advance on the usual quarter days

<PAGE>

(2)  For the period from the date hereof to the 31st day of December 1993 the
     Tenant shall pay an estimated Service Charge at the rate of
     L6,600 per annum the first payment (being a proportionate payment) in
     respect of the period up to the quarter day next following the date
     hereof to be made on or before the execution hereof

(3)  The total cost to the Landlord during each financial year of the
     Landlord shall be certified by a Chartered Accountant appointed by the
     Landlord and shall contain a fair summary of the items referred to in it
     and shall include the fees of the Chartered Accountant for such
     certification and an amount for general management expenses up to 10 per
     cent of the said total cost if the Landlord shall manage the Building
     and up to 12.5% maximum thereof plus VAT if the Landlord shall appoint
     managing agents and the said certificate shall (save in case of manifest
     error be conclusive evidence of all matters of fact referred to in it
     but the Tenant shall be entitled to inspect the audited account on
     request and be provided with copies of the same

(4)  For the purpose of assessing payment on account of the Service Charge
     for each financial year of the Landlord subsequent to the 31st day of
     December 1993 the Service Charge for such year shall be provisionally
     based on actual cost of providing the services calculated and certified
     as aforesaid for the previous financial year of the Landlord and until
     the actual costs of providing service for such year shall have been
     certified by the Landlord the Tenant shall continue to make equal
     quarterly payments in advance on the usual quarter days in every year at
     the rate based on the last cost certified by the Landlord (or on the
     aforementioned estimated Service Charge if no certificate shall have been
     issued by the Landlord)

(5)  Any under-payment or over-payment in respect of the Service Charge for a
     particular financial year or lesser period shall be adjusted on the
     quarter day next following the certification in manner aforesaid of the
     actual costs to the Landlord of carrying out the said works and
     providing the said services and facilities during that year or period

(6)  The Landlord will not charge the Tenant and the Service Charge shall not
     include any part of the total cost as shall be attributable from time to
     time from other parts of the Building as shall be designed and available
     for letting whether let or unlet or which are occupied by the Landlord
     during the whole or proportionately for any part of the relevant Service
     Charge year

(7)  The Tenant shall also pay by way of Service Charge if requested by the
     Landlord a reasonable provision (to be determined by the Surveyor acting
     as an expert and not as an arbitrator) towards the Landlord's
     anticipated expenditure during the Term in respect of:

     (a)  periodically recurring items whether recurring at regular or
          irregular intervals and

     (b)  such of the Landlord's obligations as relate to the renewal of
          replacement of the items referred to

PROVIDED that:

          (i)   such reasonable provision in respect of items in sub-paragraph
                (7)(b) aforesaid shall be determined on the assumption that
                the cost of replacement of such items is calculated on such
                life expectancy as the Surveyor may reasonably determine
                (acting as an expert and not as an

<PAGE>

                arbitrator) and that each year the Tenant will be required to
                pay a rateable proportion towards the anticipated cost of
                renewal or replacement to the intent that a fund or funds be
                accumulated sufficient to cover the cost of renewal or
                replacement by the end of the anticipated life of each such
                item except that the Tenant shall not be require to make any
                provision towards expenditure by the Landlord that it is
                anticipated will be incurred by the Landlord after the expiry
                of the Term

          (ii)  nothing in the provisions herein contained shall oblige the
                Landlord to establish and/or maintain any such fund sufficient
                in whole or in part to cover such cost of replacement or
                renewal of any such item

          (iii) any expenditure by the Landlord in respect of a recurring
                item referred to in this Schedule or in respect of its
                obligations in connection with the renewal or replacement of
                an item referred to where either:

               (a)  a fund has been established in connection
                    with such recurring item or the renewal or
                    replacement of that item ("the Specific
                    Fund") or

               (b)  a part of a fund ("the General Fund") has
                    been allocated by the Landlord for such
                    recurring item or the renewal of replacement
                    of that item

           shall first be met out of the Specific Fund or as appropriate out
           of the General Fund to the extent of the credit allocated for that
           item by the Landlord in the General Fund

     (iv)  the certificate referred to in paragraph (3) aforesaid shall
           indicate whether or not the Landlord has established and is
           maintaining any fund or funds pursuant to this paragraph and shall
           provide full details of any such fund or funds

     (v)   All sums received by the Landlord pursuant to sub-paragraph (7)
           aforesaid shall be credited to an account separate from the
           Landlord's own money and shall be held by the Landlord upon trust
           during the period of 80 years from the date of this Lease (which
           shall be the perpetuity period applicable to the provisions) for
           the persons whom from time to time shall be the tenants of the
           Building to apply the same and any interest accruing for the
           purposes set out in this paragraph and at the expiry of such
           period any such sums unexpended shall be paid to the persons who
           shall then be the tenants of the Building in shares equal to the
           percentage which the Service Charge payable by each tenant
           respectively bears to the total of all the Service Charge paid by
           the tenants of the Building

AND FOURTHLY by way of further or additional rent all sums of money which
become payable to the Landlord or its Agents by virtue of any provision of
this Lease

3.   VAT

All sums payable under or in connection with this Lease in respect of rent or
any other monies payable or taxable supplies received by the Tenant shall be
deemed to be exclusive of Value Added Tax (or any similar tax which shall
replace Value Added Tax) which may be chargeable thereon (but without any
obligation upon the Landlord to exercise any election to waive exemption in
respect of such tax) and upon the production by the Landlord or its agent to
the Tenant of an invoice appropriate to that tax the Tenant shall pay and
indemnify the Landlord in

<PAGE>

respect of such tax in addition to those sums and the Landlord shall have the
same remedies for non-payment of the tax as if the tax were part of the rent
or other such moneys or supply

4.   MARKET RENT

The market rent ("the Market Rent") of the Premises shall be the amount which
shall be agreed between the Landlord and the Tenant to be the open market
rent for the time being reasonably obtainable as between a willing landlord
and a willing tenant in respect of the Premises let as a whole with vacant
possession for a term equal to the residue of the term hereby granted or
fifteen years whichever shall be the longer (in both cases commencing on the
commencement of the relevant period) without payment of any fine or premium
and in all other respects on the terms and conditions of this Lease
(including the provision for the review of rent but excluding the amount of
rent payable)

ASSUMPTIONS

4.1            Upon the suppositions (if not facts)

     4.1.1     That all parts of the Premises are then ready fit and
               available for immediate use and occupation and could and would
               be immediately occupied whether by any willing tenant or
               under-tenant;

     4.1.2     That the Landlord and the Tenant have complied with all the
               obligations on the part of the Landlord and the Tenant
               respectively imposed by these presents (but without prejudice
               to any rights of either party in regard thereto); and

     4.1.3     That if the Premises or any part thereof or the means of
               access thereto or any services enjoyed therewith shall have
               been destroyed or damaged the same had before the relevant
               period been fully reinstated; and

     4.1.4     That the whole of the Premises are then and will (throughout
               the term required to be calculated for the purposes of such
               lease) remain in good and substantial repair and condition fit
               for immediate occupation and use; and

     4.1.5     That the Premises have been fully fitted out and equipped so
               as to be ready for immediate occupation and use by such
               willing tenant for the Assumed Use; and

     4.1.6     That the Premises have and will have throughout the term
               required to be calculated for the purposes of such lease the
               benefit of all necessary or appropriate rights easements
               quasi-rights quasi-easements permissions approvals services
               facilities or amenities (whether the same be required from the
               Landlord or from any other person or authority) so as to
               enable the willing tenant properly and beneficially to occupy
               use and enjoy the Premises for the Assumed Use;

     4.1.7     That the willing Lessee and its potential assignees or
               underlessees of the Demised Premises suffer no disadvantage at
               the relevant review date or at any time during the term
               arising from an actual or potential election by the Landlord
               to waive exemption in respect of Value Added Tax (or any
               similar tax which shall replace Value Added Tax) so far as
               concerns rent payable or of any taxable supply received by the
               Tenant under or in connection with this Lease

     4.1.8     That the Landlord is able to and does make full recovery of
               Value Added Tax paid or payable on payments made by it in
               connection with this Lease and which the Tenant is obliged to
               reimburse the Landlord (whether by way of service charge or
               otherwise) under the terms of this Lease

     4.1.9     That for the purpose of this clause 4 the Assumed Use shall
               mean as offices only

<PAGE>

DISREGARDS:

4.2  Taking no account of

     4.2.1     Any goodwill attributable to the Premises by reason of any
               trade or business carried on therein by the Tenant or any
               permitted Under tenant; and

     4.2.2     Any effect on rent of the fact that the Tenant or any
               permitted Under tenant has carried out any works to the
               premises (to which the Landlord shall have given written
               consent) excluding works carried out pursuant to an obligation
               to the Landlord; and

     4.2.3     Any effect on rent of the fact that the Tenant or any
               permitted Under tenant may have been in occupation of the
               Premises; and

     4.2.4     Any effect on rent of the absence of any rent free period or
               contribution towards fitting out costs or other inducement
               which it might then be the practice in the open market to make
               or allow to tenants on a new letting with vacant possession

     4.2.5     Any diminution of rental value which is attributable to work
               carried out by or anything done or omitted by the Tenant or
               any such predecessor in title or other person as aforesaid;

     4.2.6     Any effect on rental value of anything by reason whereof the
               Premises fail to comply with the lawful requirements of any
               competent authority in respect of health or safety

     4.2.7     All restrictions whatsoever relating to rent or to security of
               tenure contained in any Act of Parliament and any directions
               thereby given relating to any method of determining rent as
               may be permitted by law

     4.2.8     Any adverse effect upon rent of any temporary works operations
               or other activities on any adjoining or neighbouring property;

5.   REFERRAL TO EXPERT

5.1  If in any circumstances whatsoever the Market Rent shall not have been
     agreed between the Landlord and the Tenant by the date three months
     before the commencement ("the Review Date") of any period ("the Review
     Period") of the Term for which a rent review is stipulated then the
     question may at any time thereafter at the joint expense of the parties
     be referred by either party to the decision of a Surveyor ("the
     Surveyor") practising in or having knowledge of rental values in the
     area in which the Premises are situate

5.2  The Surveyor shall be mutually agreed by the Landlord and the Tenant or
     in default of agreement to be nominated by the President for the time
     being of The Royal Institution of Chartered Surveyors

5.3  The Surveyor whether agreed or nominated as aforesaid shall act as an
     expert and not as an Arbitrator

5.4  The Surveyor's decision shall be binding on both the Landlord and the
     Tenant but he shall be required to:

     5.4.1     Afford the Landlord and the Tenant an opportunity to make
               written representations to him

     5.4.2     Afford the Landlord and the Tenant an opportunity to comment
               on any such written representations received by his

     5.4.3     Give written reasons for his decision

<PAGE>

6.  MEMORANDUM

At the joint expense of the parties a deed of variation recording the Market
Rent in the form set out in the First Schedule to the Previous Lease shall be
prepared and completed in duplicate forthwith after the same has been agreed or
determined

7.   LATE REVIEW

7.1  In the event of the Market Rent not having been agreed or determined prior
     to any Review Date for any reason whatever then the Tenant shall continue
     to pay to the Landlord in the manner hereinbefore provided rent ("the
     Previous Yearly Rent") at the yearly rate payable immediately before such
     Review Date

7.2  On the Rent Payment Date immediately following the date on which such
     agreement or determination shall have been made the Tenant shall pay to the
     Landlord

     7.2.1     the amount whereby the yearly rent agreed or determined as
               aforesaid shall exceed the Previous Yearly Rent but duly
               apportioned on a daily basis

     7.2.2     interest on such amount at the rate of Barclays Bank plc base
               rate from time to time upon each and every quarterly instalment
               of additional yearly rent which would have fallen due on or after
               such Review Date if the amount of the additional yearly rent had
               been ascertained before such Review Date (the amount of such
               interest being calculated on a day to day basis in respect of
               each such quarterly instalment of additional yearly rent as
               aforesaid for the period from the date upon which the relevant
               instalment would have become payable if ascertained before such
               Review Date up to and including the date of payment)

7.3  In the event that such rate shall cease to exist such other comparable rate
     of interest shall apply as the Landlord and the Tenant may from time to
     time agree or in default of agreement shall be determined by an Arbitrator
     appointed on the application of either party by the President for the time
     being of the Institute of Chartered Accountants in England and Wales in
     accordance with the Arbitration Acts 1950 to 1979.

8.   SAME TERMS

This Lease is made upon the same terms and subject to the same covenants
provisos and conditions as are contained in the Previous Lease except as to the
premises demised the term of years granted and the rents reserved and except as
to such modifications as are set out in the Second Schedule hereto so that this
Lease shall be construed and take effect as if such terms covenants provisos and
conditions were (except as aforesaid) repeated in this Lease in full with such
modifications only as are necessary to make them applicable to this demise

9.   TENANT'S COVENANTS

The Tenant covenants with the Landlord to observe and perform all the
covenants and conditions on its part contained in the Previous Lease (as
modified as above)

10.  LANDLORD'S COVENANTS

The Landlord covenants with the Tenant to observe and perform all the
covenants and conditions on its part contained in the Previous Lease

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

                     THE FIRST SCHEDULE above referred to

<PAGE>

                                    PART 1

EASEMENTS AND RIGHTS GRANTED

1    the right of free passage and running of water soil gas electricity and
     other services to and from the Premises through any sewers drains pipes
     wires and channels now or during the period of the term as hereinafter
     defined running under or through any adjoining or neighbouring premises
     now or during such period belonging to the Landlord (but not including any
     right or easement unless the same be expressly herein referred to)

2    The full right and liberty for the Tenant and all persons authorised by it
     (in common with all other persons entitled to the like right) at all times
     by day or night to go pass and re-pass through and along or use part of the
     forecourt and the entrance hall of the Building leading to the Premises and
     the lavatories and cloakrooms for males and females respectively situated
     in the common parts of the Building and such other lavatories and
     cloakrooms as shall hereafter from time to time be allocated at its
     discretion by the Landlord for use by the Tenant and staff employed at the
     Premises

3    The right of support and protection now enjoyed by the Premises from the
     Main Structure and adjacent premises in the Building capable of providing
     such support and protection

4    With the Landlord's prior consent (which shall not be unreasonably
     withheld) the full right and liberty for the Tenant and his authorised
     servants agents and workmen at all reasonable times on reasonable notice
     (except in emergency) to enter into and upon the remainder of the Building
     as shall be necessary for the purpose of repairing maintaining or altering
     cleaning renewing or examining the Premises and any part thereof the
     subject matter of any easements or any other rights set out in this Clause
     2 and to make or permit any connections and disconnections which may be
     necessary in relation thereon or for the purpose of carrying out any work
     which may be necessary for the protection of the Premises PROVIDED that in
     the exercise of such right the Tenant or such persons exercising such
     rights shall cause as little inconvenience and interference as is
     practicable and shall forthwith make good any damage caused thereby.

5    The right to park two motor vehicles in the forecourt of the Building in
     spaces designated from time to time by the Landlord in the area shown
     hatched black on the plan annexed hereto

                                    PART 2

EXCEPTIONS AND RESERVATlONS

     PASSAGE OF WATER ETC

1    The free passage and running of water soil gas electricity and all other
     service for any adjoining or neighbouring premises within the Building
     through any sewers drains pipes wires and channels now or which at any
     time within such period as aforesaid shall run under or through the
     Premises and to make connections with such sewers drains pipes wires and
     channels for the purpose of exercising the said fee passage of water
     soil gas electricity and all other services as aforesaid

     LIGHT AND AIR

2    All rights of light air and other easements and rights (but without
     prejudice to those expressly hereinbefore granted to the Tenant) now or
     hereafter belonging to be enjoyed by any adjacent or neighbouring land
     or building over or against the Premises

     SUPPORT AND SHELTER

<PAGE>

3    The right to support and shelter and all other easements and rights now
     or hereafter belonging to or enjoyed by the Building other than the
     Premises and all adjacent or neighbouring land or buildings an interest
     wherein in possession or reversion is at any time during the term hereby
     granted vested in the Landlord

                        THE SECOND SCHEDULE AFORESAID

                     MODIFICATIONS OF TENANT'S COVENANTS

In Clause 28.1 the following words shall not apply and shall be excluded from
this Lease this is to say:

     "save that the Tenant may with previous written consent in writing of the
     Landlord such consent not to be unreasonably withheld or delayed underlet
     the whole or any part of each of the first second and basement floors
     provided that no more than four underlettings are created"



The Common Seal of BANTRY
INVESTMENTS LIMITED was
affixed in the presence of


 ...........................................

 ...........................................  Secretary