Sharesave Grant

National Grid PLC
29 December 2006

29 December 2006

National Grid plc (NG)

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Directors' Interests

(Sharesave Scheme - Grant of options)

Yesterday, options were granted to eligible group employees under the Employee
Sharesave Scheme, in the fifth invitation under the Scheme. The following
executive director was included:

National Grid Ordinary shares at option price of 558p per share

Sharesave Option Granted To:    Number of NG      Exercise Period            Total interest Now
                                Shares
Steve Lucas                     1,693             6 months from 1 April 2010 549,321



Contact: D C Forward, Assistant Secretary (0207 004 3226)




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