Acquisition Completion

RT/DYGERT INTERNATIONAL INC - COMPLETION

Further to the announcement made on 23 December 2008, Diploma PLC is pleased to confirm that on Monday, 12 January 2009, it completed the acquisition of the assets and business of RT/Dygert International Inc, following the satisfaction of certain administrative conditions.

For further enquiries please contact:

Bruce Thompson, Chief Executive Officer 020 7549 5700

Nigel Lingwood, Group Finance Director  020 7549 5705

NOTE TO EDITORS:

Diploma PLC is an international group of businesses supplying specialised technical products and services to the Life Sciences, Seals and Controls industries.

Diploma achieves stable growth and attractive margins from its focus on supplying specialised technical products to markets which value high levels of customer service, technical support and value adding activities. A high proportion of revenues are generated from essential products and services funded by operating, rather than capital budgets.

The Group employs ca. 1,000 employees and its principal operating businesses are located in the UK, Germany, US and Canada.

Over the last five years, the Group has grown adjusted earnings per share at an average of ca. 21% p.a. through a combination of organic growth and acquisitions. The current market capitalisation is ca. £140m.