Holding(s) in Company

TR-1: Notifications of Major Interests in Shares 1. 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 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 Ignis Investment Services Limited notification obligation: 4. Full name of shareholder(s) (if different from 3): 5. Date of transaction (and date on 19 December 08 which the threshold is crossed or reached if different): 6. Date on which issuer notified: 23 December 08 7. Threshold(s) that is/are crossed or 3% reached: 8: Notified Details A: Voting rights attached to shares Class/type Situation previous Resulting situation after the triggering of shares to the triggering transaction transaction If possible use ISIN code Number of Number Number Number of voting Percentage of shares of of rights voting rights voting shares rights Direct Indirect Direct Indirect Ordinary 14,699,154 3.02 Share GB0007973794 B: Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ No. of voting Percentage of financial date conversion rights that may be voting rights instrument period/date acquired (if the instrument exercised/ converted) N/A Total (A+B) Number of voting rights Percentage of voting rights 14,699,154 3.02 9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable: Pearl Group Limited Impala Holdings Limited Pearl Group Holdings (No. 1) Ltd Ignis Asset Management Ltd Ignis Investment Servces Ltd (indirect) Bank of New York Nominees Limited (1,858,924 0.38%) Vidacos Nominees Ltd (10,940,852 2.25%) Mellon Bank NA (1,064,883 0.22%) Nortrust Nominees Ltd (383,794 0.08%) State Street Nominees (450,701 0.09%) Proxy Voting: 10. Name of proxy holder: N/A 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 Serco Group plc 15. Contact telephone number: 01256 744108

Companies

Serco Group (SRP)
UK 100

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