Holding(s) in Company

Diploma PLC
02 August 2006


 
FOR IMMEDIATE RELEASE

                                                                   2 August 2006

Dear Sirs

We received a letter today from Slater Investments Limited notifying us of
their interest in 610,201 shares, representing 2.7% of the Company's issued
share capital.

Yours faithfully



NP Lingwood
Company Secretary



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