Holding(s) in Company

TR-1: Notifications of Major Interests in Shares Identity of the issuer or the underlying Serco Group PLC issuer of existing shares to which voting rights are attached: 2: Reason for notification (yes/no) An acquisition or disposal of voting rights yes An acquisition or disposal of qualifying financial instruments which no may result in the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic no effect to qualifying financial instruments An event changing the breakdown of voting rights no Other (please specify): no 3. Full name of person(s) subject to the Standard Life Investments Ltd notification obligation: 4. Full name of shareholder(s) (if Vidacos Nominees different from 3.): 5. Date of the transaction (and date on 27 October 2009 which the threshold is crossed or reached): 6. Date on which issuer notified: 28 October 2009 7. Threshold(s) that is/are crossed or 3% DIRECT reached: 8: Notified Details Voting rights attached to shares Class/type of share If possible use GB0007973794 ISIN code Situation previous to the triggering transaction Number of shares Number of voting rights below 3% below 3% Resulting situation after the triggering transaction Number of shares Number of voting rights Percentage of voting rights Direct Indirect Direct Indirect 14,707,853 14,707,853 3.004% Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ No. of voting Percentage of financial date conversion rights that may voting rights instrument period/date be acquired (if the instrument exercised/ converted) Delta C: Financial Instruments with similar economic effect to Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Exercise Expiration Exercise/ Number of % of voting instrument price date Conversion voting rights period rights instrument refers to Nominal Total (A+B+C) Number of voting rights Percentage of voting rights 14,707,853 3.004% DIRECT 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: 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: Serco Group plc is disclosing this information in accordance with DTR 5.8.12 14. Contact name: Chris Winters, Assistant Company Secretary 15. Contact telephone number: 01256 744108

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Serco Group (SRP)
UK 100

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