Director Shareholding

Diploma PLC
19 May 2005


News Release   
     
     FOR IMMEDIATE RELEASE
                                                                    19 May 2005

                  DIPLOMA PLC - DIRECTORS' INTERESTS IN SHARES


     Diploma PLC, the specialised international distribution group, has been
     notified today that Mr J Rennocks, the Chairman of the Company, has become
     beneficially interested in 3,500 ordinary shares of the Company, following
     a purchase of shares on 16 May 2005 at 673 pence per share.


     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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