Director/PDMR Shareholding

DIPLOMA PLC

12 CHARTERHOUSE SQUARE, LONDON EC1M 6AX

TELEPHONE: +44 (0)20 7549 5700

FACSIMILE: +44 (0)20 7549 5715

FOR IMMEDIATE RELEASE

14 May 2015

DIPLOMA PLC - DIRECTOR'S INTEREST IN SHARES

Diploma PLC (the "Company") has been notified that on 13 May 2015, Ms Marie-Louise Clayton, a non-Executive Director of the Company, sold 5,000 ordinary shares of 5p each in the Company at 7.95 pence per share.

For further information, please contact:

Diploma PLC -

Anthony Gallagher, Group Company Secretary 020 7549 5700