Holding(s) in Company

Diploma PLC
19 August 2004


                                  DIPLOMA PLC
                        20 Bunhill Row, London EC1Y 8UD
              (Registered in England No. 3899848 at above address)
                    Telephone: [phone] Fax: [phone]



Company Announcements Office, London Stock Exchange

No. of pages inc. this one: 1



19 August 2004

Dear Sirs,

We have received a letter today from Fidelity International Limited and its
subsidiary Fidelity Investment Services Ltd notifying their interest in 9.17% of
our issued share capital.


Yours faithfully

Nigel Lingwood

N P Lingwood

Company Secretary




                      This information is provided by RNS
            The company news service from the London Stock Exchange
     HOLQKCKPBBKDAFD