Director Shareholding

Diploma PLC
18 January 2005


                  DIPLOMA PLC - DIRECTORS' INTERESTS IN SHARES

Diploma PLC, the international specialised distribution group, announces that 
the following Directors have purchased ordinary shares in the Company, pursuant 
to the Diploma PLC 2004 Bonus Share Matching Plan.

                         No. of Ordinary Shares
 
     BM Thompson                  6,996               £6.38
     I Henderson                  5,045               £6.38
     NP Lingwood                  3,110               £6.38

                   
The shares were purchased by Ogier Employee Benefit Trustee, as nominee for each 
of the above Directors.

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 7638 0934 
     Nigel Lingwood, Group Finance Director          020 7448 4875



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