Director Shareholding

Diploma PLC
18 May 2005


News Release  
     
     FOR IMMEDIATE RELEASE

                                                                    18 May 2005

                  DIPLOMA PLC - DIRECTORS' INTERESTS IN SHARES


     Diploma PLC, the specialised international distribution group, has been
     informed that Ogier Employee Benefit Trustee Limited, as trustee of the
     Diploma Employee Benefit Trust, purchased 77,656 ordinary shares in the
     Company at a price of £6.60 on Wednesday, 18 May 2005.

     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:

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


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