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|                                      |                Copenhagen, 5 May 2008 |
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Extraordinary change in the round lot size of G4S plc.                          
The OMX Nordic Exchange, part of The NASDAQ OMX Group, Inc., has decided        
extraordinarily to lower the trading lot size of G4S plc. - SAXESS Short name   
G4S (ISIN: GB00B01FLG62) from 1.000 shares today to 500 shares as of Tuesday May
6, 2008.                                                                        
                                                                                
As a consequence the order book for G4S plc. will be cleared for all orders     
prior to the opening of the trading day on Tuesday May 6, 2008, and,            
consequently, all overnight orders will have to be replaced.                    

For further information, please contact: Helene Gaustad Jeppesen, Surveillance, 
tel. +45 33 93 33 66