Director/PDMR Shareholding

RNS Number : 0637I

National Grid PLC

27 June 2013

National Grid plc (National Grid)

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Notification of Directors' Interests
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Performance Share Plan-2009 Award Release

Yesterday, the Trustee of the National Grid Employee Share Trust (UBS Trustees (Jersey) Limited) confirmed that the 2009 awards made to certain Executive Directors under the National Grid Performance Share Plan were released following completion of the one year retention period on 25 June 2013, in accordance with the plan rules. The number of Shares/ADSs disclosed below that have been transferred to participants by the Trustee are net of Shares/ADSs sold to cover statutory deductions and associated costs.

Director	Number of Shares/ADSs
Steve Holliday	51,678 Shares
Nick Winser	25,828 Shares
Tom King	8,845 ADSs

Long Term Performance Plan

Today, National Grid received a further notification from UBS Trustees (Jersey) Limited that the following Executive Directors were granted an award of Shares/ADSs on 27 June 2013 in National Grid plc under the National Grid Long Term Performance Plan, calculated by reference to a share price of 731.01p and an ADS price of $56.1784 the extent to which awards will vest will depend upon the Company's performance against the relevant conditions. Subject to performance, 75% of the Shares/ADSs will vest in July 2016 and the remaining 25% will vest in July 2017 and Shares/ADSs will be transferred to participants net of deductions.