Correction : Blocklisting Application

Details of Allocation of Blocklistings Amongst Serco Group plc Executive Option
Plans



Application has been made to The UK Listing Authority and the London Stock
Exchange for block listings totalling 10,000,000 ordinary shares of 2p each to
trade on the London Stock Exchange and to be admitted to the Official List upon
issuance. The shares shall rank equally with the existing issued shares of the
Company.

The Block listings consist of: 8,500,000 ordinary shares to be issued under the
1998 Serco Group plc Executive Option Plan and 1,500,000 ordinary shares to be
issued under the 2005 Serco Group plc Executive Option Plan.