Working on an electricity distribution line in the US

2007/08 – Performance Summary

A brief synopsis of the results and performance of the Company (see Important Information).

The Company’s 2008 Annual General Meeting (‘AGM’) will be held at 2pm on 28 July 2008 at The ICC, Broad Street, Birmingham B1 2EA. Displays highlighting what we do will be in place before and after the meeting and it will be possible to speak to National Grid representatives and those of Capita, our Registrars. A light lunch will be provided between 12.30pm and 1.30pm. A shuttle bus will run from Birmingham New Street to the ICC and limited free parking, on a first come first served basis, is available for the duration of the meeting. The formal Notice of AGM, containing details of the proposed resolutions and the Board’s voting recommendations is available on our website at www.nationalgrid.com.

If you intend to come to the meeting, please bring your admission card. If you are unable to attend, please complete the proxy card either online at www.nationalgrid.com/shareholders or by completing, signing and returning the hard copy proxy card in the reply paid envelope. ADS holders should return the Voting Instruction Card.

The results of the meeting, for which a poll will be called on all resolutions, will be announced to the London Stock Exchange and the number of votes cast will be made available on our website, as soon as possible after the meeting.