Monday 25th February 2013
National Grid plc (National Grid)
Notification of Major Interest in National Grid Ordinary Shares
National Grid received, late on Friday 22nd February UK time, a notification on Form TR-1 from The Capital Group Companies, Inc. that its total interest in National Grid voting ordinary shares was, at 21 February 2013, at 10.905%, a total of 399,638,038 shares.
This notice is given in fulfilment of National Grid's obligations under the FSA's Disclosure and Transparency Rules.
D C Forward
Assistant Secretary
0207 004 3226