US Debt Shelf Regn Statement

National Grid PLC
29 June 2006


                               National Grid plc

                      US debt shelf registration statement


National Grid plc today announces that on Wednesday 28 June 2006 it filed a debt
shelf registration statement on Form F-3 with the United States Securities and
Exchange Commission (SEC) which is now effective.

This announcement does not constitute an offer of any securities which will only
be made pursuant to a prospectus filed with the SEC.


Contact details

Investors
Malcolm Cooper
Phone: [phone]
[e-mail]

Media
Malcolm Cooper
Phone: [phone]
[e-mail]


29 June 2006


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