Blocklisting Interim Review

RNS Number : 9532W

National Grid PLC

05 August 2009

National Grid plc ('NG')

5th August 2009

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Block Listing Six Monthly Return

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NB: References are to NG Ordinary shares of 1117/43p.

1. Name of Company	National Grid plc
2. Name of Scheme	Employee Shareschemes
3. Period	1 February 2009 to 31 July 2009
4. Shares not issued at end of last period:	1,289,177
5. Shares issued/allotted during period:	Nil
6. Balance not yet issued/allotted at end of period:	1,289,177
7. No. of shares originally listed and date of admission:	On 1 August 2005, following NG's capital consolidation, a total of 2,712,727,627 New Ordinary Shares of 1117/43 pence were in issue. See Note below:

Note: The Company's share repurchase programme (into Treasury) continued until 24 September 2008. Sharescheme operations continue to be principally satisfied by transfer of treasury shares. Total number of shares in issue at end of the period: 2,581,974,851; of which the holding of Treasury shares at 31 July 2009 was 146,972,808; leaving a balance of 2,435,002,043 shares with voting rights.