Change of Registered Office

24 September 2007

                                  Corero Plc                                   

                          ("Corero" or the "Company")                          

                         Change of registered address                          

The Company advises that its registered office has been moved to 3rd Floor, 3
London Wall Buildings, London Wall, London EC2M 5SY.

Contacts                                                                       
                                                                               
Corero PLC                                                                     
                                                                               
Ian Selby (Finance Director)                                       01923 695191
                                                                               
John East and Partners Limited                                    0207 628 2200
                                                                               
John East/Virginia Bull                                                        
                                                                               
College Hill Associates                                           0207 457 2020
                                                                               
Matthew Smallwood/Jamie Ramsay