Total Voting Rights

Diploma PLC
24 January 2008


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

   FOR IMMEDIATE RELEASE

                                                                 24 January 2008

                                  DIPLOMA PLC
                            VOTING RIGHTS AND CAPITAL

   In conformity with the Transparency Directive's Transitional Provision 6, the
   Company advises that at the date of this Announcement:

   Diploma PLC's capital consists of 113,239,555 ordinary shares in issue with
   voting rights of one vote per share. Diploma PLC does not hold any ordinary
   shares in Treasury.

   Therefore, the total number of voting rights in Diploma PLC is 113,239,555.
   The above figure (113,239,555) may be used by shareholders as the denominator
   for the calculations by which they will determine if they are required to
   notify their interest in, or a change to their interest in, Diploma PLC under
   the FSA's Disclosure and Transparency Rules.


   For further enquiries please contact:

   Nigel Lingwood, Group Finance Director     020 7549 5705




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