Publication of Prospectus

National Grid PLC
18 November 2005


Publication of Supplementary Prospectus

The following supplementary prospectus has been approved by the UK Listing
Authority and is available for viewing:

Supplementary Prospectus for the National Grid plc / National Grid Electricity
Transmission plc Euro 6,000,000,000 Euro Medium Term Note Programme

To view the full document, please paste the following URL into the address bar
of your browser.

http://www.rns-pdf.londonstockexchange.com/rns/3314u_-2005-11-17.pdf


For further information, please contact

Andrew Kluth
Assistant Treasurer
National Grid plc
1-3 Strand
London WC2N 5EH

Tel:      [phone]
Fax:     [phone]




DISCLAIMER - INTENDED ADDRESSEES



Please note that the information contained in the Supplementary Prospectus may
be addressed to and/or targeted at persons who are residents of particular
countries (specified in the Prospectus for the National Grid plc / National Grid
Electricity Transmission plc Euro 6,000,000,000 Euro Medium Term Note Programme
dated 18 August 2005) only and is not intended for use and should not be relied
upon by any person outside these countries. Prior to relying on the information
contained in the Supplementary Prospectus you must ascertain from the Prospectus
whether or not you are part of the intended addressees of the information
contained therein.



Your right to access this service is conditional upon complying with the above
requirement.


                      This information is provided by RNS
            The company news service from the London Stock Exchange