Medium Term Note Programme

National Grid PLC
28 March 2007


                                National Grid plc

                        EURO MEDIUM TERM NOTE PROGRAMME


National Grid plc announces that it has today issued EUR 50,000,000 4.255 per
cent Instruments due 2008, Series No 46 as part of the National Grid plc /
National Grid Electricity Transmission plc EUR 12,000,000,000 Euro Medium Term
Note Programme.

28 March 2007


Contact

Media
Clive Hawkins            020 7004 3147

Investors
Andrew Kluth             020 7004 3365



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