Holding(s) in Company

21 May 2010 11:46

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying Interserve Plc issuer of existing shares to which voting rights are attached: ii 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights X An acquisition or disposal of qualifying financial instruments which

may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights Other (please specify):

3. Full name of person(s) subject to JPMorgan Asset Management Holdings Inc. the notification obligation: iii

4. Full name of shareholder(s) (if JPMorgan Asset Management (UK) Limited different from 3.):iv

5. Date of the transaction and date 18 May 2010 on which the threshold is crossed or reached: v 6. Date on which issuer notified: 20 May 2010 7. Threshold(s) that is/are crossed 5% downwards or reached: vi, vii

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of Situation previous Resulting situation after shares to the triggering the triggering transaction transaction if possible Number Number Number Number of % of voting using of of of voting rights x the ISIN CODE Shares Voting shares rights Rights Direct Direct xi Indirect Direct Indirect xii

GB0001528156 6,490,959 6,490,959 6,132,040 4.87% B: Qualifying Financial Instruments Resulting situation after the triggering transaction

Type of financial Expiration Exercise/ Number of voting % of voting

instrument date xiii Conversion Period rights that may be rights xiv acquired if the instrument is exercised/ converted.

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financ Exercise Expiration Exercise/ Number of voting % of voting

ial price date xvii Conversion rights instrument rights xix, xx instrument period refers to xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 6,132,040 4.87%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi

Total disclosable holding for JPMorgan Asset Management Holdings Inc: 6,132,040 (4.87%)

JPMorgan Asset Management (UK) Limited: 6,132,040 (4.87%) Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy N/A holder will cease to hold: 12. Date on which proxy holder will N/A cease to hold voting rights: 13. Additional information: N/A 14. Contact name: Mr Trevor Bradbury 15. Contact telephone number: 0118 932 0123