According to an Exchange Notice dated June 18, 2007, Group 4 Securicor Plc will change its company name to G4S Plc. OMX Derivatives Market will change ticker code as well as series names of existing option and future series in Group 4 Securicor in connection to the name change. The new ticker code will be implemented as from June 25, 2007. For further information, please see attachment.