Response to media speculation

National Grid Transco PLC
25 June 2004



National Grid Transco plc

For Immediate Release                                   25 June 2004


Media Speculation on Potential Acquisition of Crown Castle's UK Towers Business

National Grid Transco ('NGT') notes recent speculation regarding a potential
acquisition of the UK operations of Crown Castle International Corp ('Crown
Castle').

NGT confirms that it has entered into discussions with Crown Castle.

Further announcements will be made as appropriate.


CONTACT DETAILS


National Grid Transco:

Investors

Marcy Reed                              [phone]           [phone](m)

Alexandra Morton                        [phone]           [phone](m)

Terry McCormick                         [phone]           [phone](m)

Louise Clamp                            [phone]           [phone](m)


Media

Clive Hawkins                           [phone]           [phone](m)

Citigate Dewe Rogerson                  [phone]

Anthony Carlisle                        [phone](m)


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