Director/PDMR Shareholding

Diploma PLC
26 November 2007


             NEWSRELEASE             DIPLOMAPLC

                                                          12 CHARTERHOUSE SQUARE
                                                                 LONDON EC1M 6AX
                                                  TELEPHONE: [phone]
                                                  FACSIMILE: [phone]


             FOR IMMEDIATE RELEASE

                                                               26 November 2007


             DIPLOMA PLC - DIRECTORS' INTERESTS IN SHARES

             Diploma PLC, the international group of specialised distribution
             businesses, has today been notified that the following Directors
             have received ordinary shares in the Company as set out below:


             Received        Market price

             BM Thompson     23,625       ordinary shares of 5p each        880p
             I Henderson     14,175       ordinary shares of 5p each        880p
             NP Lingwood     14,175       ordinary shares of 5p each        880p


             The shares were received pursuant to the vesting of an award of
             shares made on 29 November 2004 under the Company's Long Term
             Incentive Plan ('LTIP'). The vesting of the award was subject to
             performance conditions as set out in the LTIP and measured over a
             three year period ended 30 September 2007. Further details relating
             to the performance conditions will be set out in the Annual Report
             2007, which will be posted to shareholders on 6 December 2007.

             The shares were transferred to the Directors by Ogier Employee
             Benefit Trustee Limited, 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 51,975 to 150,612 shares.

             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.


             For further enquiries please contact:

             Bruce Thompson, Chief Executive Officer     020 7549 5700
             Nigel Lingwood, Group Finance Director      020 7549 5705




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