Additional Listing

Serco Group plc (the "Company") was notified that, on 20 April 2012, the
individuals below, each a person discharging managerial responsibility,
exercised nil cost conditional share awards and entered into transactions in
the Company's ordinary shares as detailed in the table below. The shares that
were sold on the London Market were sold at 562.0407 pence per share.

Details of the exercise and sale transactions are as follows:-

                          Awards    Shares    Shares
                       exercised      sold  retained
                                                    
Ed Casey                  13,924    13,924         0
                                                    
Guy Leach                  9,331     4,817     4,514
                                                    
Robert McGuiness          11,278     5,822     5,456
                                                    
Tom Riall                 11,278    11,278         0

This notice is given in fulfilment of obligations under DTR3.1.2R and DTR3.1.4R
(1)(a).