Holding(s) in Company

Gresham Computing PLC
21 March 2007



TR-1:               NOTIFICATION OF MAJOR INTERESTS IN SHARES 

1. Identity of the issuer or the underlying issuer of existing            GRESHAM COMPUTING PLC
shares to which voting rights are attached:

2. Reason for the notification     (please tick the appropriate box or boxes)

An acquisition or disposal of voting rights

An acquisition or disposal of financial instruments which may result in the acquisition of
shares already issued to which voting rights are attached

An event changing the breakdown of voting rights
Other (please specify):

DECLARATION OF MAJOR SHAREHOLDINGS AS PER FSA TRANSITIONAL PROVISION 7                            X

3. Full name of person(s) subject to the notification              J O HAMBRO CAPITAL MANAGEMENT GROUP
obligation:                                                                      LIMITED

4. Full name of shareholder(s) (if different from 3.):

5. Date of the transaction (and date on which the threshold is                     N/A
crossed or reached if different):

6. Date on which issuer notified:                                             20 MARCH 2007

7. Threshold(s) that is/are crossed or reached:                                THROUGH 11%

8. Notified details:




A: Voting rights attached to shares

Class/type of     Situation previous to   Resulting situation after the triggering transaction
shares            the Triggering
                  transaction
 if possible      Number of   Number of   Number of     Number of voting rights   % of voting rights
using the ISIN    Shares      Voting      shares
CODE                          Rights      Direct        Direct       Indirect     Direct       Indirect

ORDINARY SHARES   5,520,750   5,520,750   5,895,750     5,895,750                 11.71%

GB0008808825      UNDER S.198
                  ON 22/5/06


B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting
instrument                           Period/ Date              that may be acquired if    rights
                                                               the instrument is
                                                               exercised/ converted.



Total (A+B)
Number of voting rights                            % of voting rights
5,895,750                                          11.71%


9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively
held, if applicable:



Proxy Voting:

10. Name of the proxy holder:                                      -

11. Number of voting rights proxy holder will cease to hold:       N/A

12. Date on which proxy holder will cease to hold voting rights:   N/A


13. Additional information:                  FIRST NOTIFICATION UNDER DTR SOURCEBOOK

14. Contact name:                            CHRIS ERRINGTON, COMPANY SECRETARY

15. Contact telephone number:                01489 555500




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