Director/PDMR Shareholding

Diploma PLC
08 November 2006

                                                                   NEWSRELEASE
 
            FOR IMMEDIATE RELEASE

                                                               8 November 2006

                  DIPLOMA PLC - DIRECTORS' INTERESTS IN SHARES

            Diploma PLC, the international specialised distribution group, has
            today been notified that the following Directors have received the
            following number of ordinary shares in the Company in respect of
            Matching Awards which have vested, pursuant to the Diploma PLC 2004
            Bonus Share Matching Plan.

                            No. of Ordinary Shares            Market Price at 
                                                              date of Vesting
            BM Thompson             11,860                         £8.50P
            I Henderson              8,551                         £8.50P
            NP Lingwood              5,270                         £8.50P

            The shares were transferred to the Directors by Ogier Employee
            Benefit Trustee, as trustee of the Diploma Employee Benefit Trust
            ('the Trust'). Accordingly the number of ordinary shares in the
            Company held by the Trust has, following this transfer, been reduced
            by 25,681 to 154,842.

            Each of the Executive Directors of the Company, BM Thompson, I
            Henderson, NP Lingwood, is deemed to be beneficially interested in
            all the shares held in the Trust from time to time by virtue of
            being a potential beneficiary under the Trust.

            The Bonus Share Matching Plan was withdrawn in 2005 and no further
            Awards are outstanding under this Plan.



            For further enquiries please contact:

            Bruce Thompson, Chief Executive Officer     020 7638 0934
            Nigel Lingwood, Group Finance Director      020 7448 4875




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