Holding(s) in Company

Diploma PLC
5 May 2004


LETTER TO:  DIPLOMA PLC
            4 May 2004

Companies Act 1985 (as amended):
Disclosure of Interests in Shares

In accordance with Part VI of the Companies Act 1985 (as amended) (the 'Act'),
we write to inform you that Prudential plc and all of its subsidiary companies,
no longer have a notifiable interest in the issued share capital of your
company.

For the purposes of S210 of the Act, the address for those companies identified
herein is Laurence Pountney Hill London EC4R 0HH.

From:  Richard Harding 
       for and on behalf of Prudential plc


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