Holding(s) in Company

Diploma PLC 03 December 2007 TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES (1). Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: Diploma PLC 2. Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights: (YES) An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: ( ) An event changing the breakdown of voting rights: ( ) Other (please specify): ( ) 3. Full name of person(s) subject to the notification obligation (iii): Lincoln Vale European Master Fund, L.P Philip A. Cooper Managing Partner By: Lincoln Vale General Partner L.P. Acting by its General Partners, Lincoln Vale European Partners GP LLC 4. Full name of shareholder(s) (if different from 3.): Lincoln Vale European Partners Master Fund, L.P. 5. Date of the transaction and date on which the threshold is crossed or reached if different): November 30, 2007 6. Date on which issuer notified: December 3, 2007 7. Threshold(s) that is/are crossed or reached: 5.0% 8. Notified details: A: Voting rights attached to shares Class/type of shares Situation previous to if possible using the the Triggering ISIN CODE transaction Number of shares Number of voting Rights GB0001826634 959,173 959,173 Resulting situation after the triggering transaction Class/type of shares Number of shares Number of voting rights % of voting rights if possible using the ISIN CODE Direct Direct Indirect Direct Indirect GB0001826634 1,144,780 1,144,780 5.05% B: Financial Instruments Resulting situation after the triggering transaction Type of Expiration Date Exercise/Conversion Number of voting % of voting financial Period/ Date rights that may be rights instrument acquired if the instrument is exercised/ converted. Total (A+B) Number of voting rights % of voting rights 1,144,780 5.05% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: The voting interest of Lincoln Vale European Partners Master Fund, L.P. is entirely attributed to Lincoln Vale European Partners GP LLC, acting by its General Partner, Lincoln Vale General Partner L.P. LEGAL ADDRESSES BUSINESS ADDRESSES Lincoln Vale European Partners Lincoln Vale European Partners Master Fund, L.P. Master Fund, L.P. PO Box 309GT, Ugland House 55 Old Bedford Road South Church Street, George Town Lincoln, MA 01773 Grand Cayman U.S.A Cayman Islands Lincoln Vale European Lincoln Vale European Partners GP LLC Partners GP LLC PO Box 309GT, Ugland House 55 Old Bedford Road South Church Street, George Town Lincoln, MA 01773 Grand Cayman U.S.A Cayman Islands Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: 14. Contact name: Joseph A Zadlo Associate, Lincoln Vale LLC 15. Contact telephone number: +1.781.541.6382 This information is provided by RNS The company news service from the London Stock Exchange

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