Notification of Directors' Interests

RNS Number : 9713J

National Grid PLC

18 June 2014

National Grid plc (National Grid)

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Notification of Directors' Interests
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National Grid Deferred Share Plan- 2014 Award

Yesterday (17 June 2014), National Grid received notification from UBS Trustees (Jersey) Limited, as Trustee of the trust operating in conjunction with the National Grid Deferred Share Plan ("DSP"), that the following Executive Directors were granted an award of Ordinary shares in National Grid (the 'Shares') or American Depositary Shares (ADSs) under the DSP on Tuesday 17 June 2014, calculated by reference to a share price of 839.22p or an ADS price of $73.415. The awards will vest on the third anniversary of the date of grant (June 2017). The Shares and ADSs will be transferred to participants net of deductions as soon as practicable thereafter.

Awards to the Executive Directors are as follows:

Director	Number of Shares/ADSs
Tom King	6,566 ADSs
Steve Holliday	69,653 Shares
Andrew Bonfield	47,048 Shares
Nick Winser	41,924 Shares
John Pettigrew	14,350 Shares

DSP-2011 Award Release

Yesterday, National Grid received notification from UBS Trustees (Jersey) Limited, as Trustee of the National Grid Group Employee Share Trust (the 'Trust'), confirming that the 2011 awards made to Executive Directors under the DSP were released on 16 June 2014 being the third anniversary) of the date of the awards in accordance with the plan rules. The number of shares disclosed below that have been transferred to participants by the Trustee are net of shares sold to cover statutory deductions and associated costs.

The Shares and ADSs released to Executive Directors are as follows:

Director	Number of Shares/ADSs
Tom King	8,024 ADSs
Steve Holliday	51,137 Shares
Andrew Bonfield	15,328 Shares
Nick Winser	25,397 Shares
John Pettigrew	7,647 Shares

The total share interests of the above directors, following these changes, are:

Director	Number of shares/ADSs
Tom King	282,311 ADSs
Steve Holliday	2,348,340 Shares
Andrew Bonfield	995,342 Shares
Nick Winser	1,142,199 Shares
John Pettigrew	367,027 Shares