Director Declaration

Diploma PLC
25 February 2008



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


    FOR IMMEDIATE RELEASE

                                                                25 February 2008

                      DIPLOMA PLC - DIRECTORS' DECLARATION

    Diploma PLC, the international group of specialised distribution businesses,
    has been advised that Mr I Grice, a Non-Executive Director of the Company,
    is no longer Group Chief Executive of Alfred McAlpine plc, following the
    successful sale of the Group to Carillion plc.


    For further enquiries please contact:

    Nigel Lingwood, Group Finance Director     020 7549 5705




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