Result of AGM

DIPLOMA PLC

12 CHARTERHOUSE SQUARE, LONDON EC1M 6AX

TELEPHONE: +44 (0)20 7549 5700

FACSIMILE: +44 (0)20 7549 5715

FOR IMMEDIATE RELEASE

16 January 2013

RESULTS OF ANNUAL GENERAL MEETING

The Company has submitted copies of resolutions, duly passed at the AGM of Diploma PLC held earlier today, concerning items other than ordinary business to the National Storage Mechanism and these will shortly be available for inspection at www.hemscott.com/nsm.do

All of the resolutions put to shareholders at the Annual General Meeting were passed by poll votes. The results of poll votes cast are available on the Company's website at www.diplomaplc.com

Company Secretary

Diploma PLC