Director/PDMR Shareholding

Diploma PLC
22 March 2007


    FOR IMMEDIATE RELEASE
                                                                 22 March 2007


                                  DIPLOMA PLC
                                        
    NOTIFICATION OF TRANSACTION OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL
                  RESPONSIBILITY ('PDMR') OR CONNECTED PERSON
                                        
    Diploma PLC, the international group of specialised distribution businesses,
    has been informed that Ogier Employee Benefit Trustee Limited, as trustee of
    the Diploma Employee Benefit Trust, has today purchased 32,500 ordinary
    shares in the Company at a price of £8.48.

    Each of the Executive Directors of the Company, BM Thompson, I Henderson and
    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:

    Nigel Lingwood, Group Finance Director     020 7448 4875




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