ANNEX 1 — SUMMARY
FORM 6-K
SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549
Report of Foreign Issuer
Pursuant to Rule 13a – 16 or 15d – 16 of
The Securities Exchange Act of 1934
Announcements sent to the London Stock Exchange
National Grid plc, 1-3 Strand, London, WC2N 5EH, United Kingdom
Update – Routine announcements from 18 December 2009 to 4 February 2010
| DATE | DETAILS | |
| 2 February 2010 | Blocklisting Six Monthly Return | |
| 1 February 2010 | Voting Rights and Capital (Transfer of shares from Treasury and end-month) | |
| 21 January 2010 | Notification of Directors’ Interests -Scrip Dividend and Dividend Reinvestment: | |
| 18 January 2010 | Voting Rights and Capital (Transfer of shares out of Treasury) | |
| 12 January 2010 | Crescent Holdings Gmbh continuing interest at above 4% | |
| 12 January 2010 | Voting Rights and Capital (Transfer of shares out of Treasury) | |
| 7 January 2010 | Directors Interests-Share Incentive Plan-monthly update | |
| 4 January 2010 | Voting Rights and Capital (Transfer of shares out of Treasury – and end month) | |
| 31 December 2009 | Directors’ Interests- Sharesave Scheme Grant of options- S Lucas | |
| 21 December 2009 | Voting Rights and Capital (Transfer of shares out of Treasury) | |
Note:During the period two ‘same day’ National Grid plc Forms 6-k were sent as follows:
| 4 | February 2010: ‘National Grid plc Interim Management Statement for the period 01 October 2009 to 3 February 2010’ |
20 January 2010: ‘National Grid plc- Scrip Dividend’;
and‘Trading of Ordinary Shares- Scrip Dividend’
21 December: ‘Postponement of transmission price control review’.