Corporate Brokers

1 October 2010

National Grid plc

Following a comprehensive review of its corporate broking arrangements, National Grid announces the appointment of Bank of America Merrill Lynch and Barclays Capital as its joint corporate brokers.

CONTACTS

Investors

David Rees +44 (0)20 7004 3170 +44 (0)7901 511322 (m)

Victoria Davies +44 (0)20 7004 3171 +44 (0)7771 973447 (m)

Media

Chris Mostyn +44 (0)20 7004 3149 +44 (0)7774 827710 (m)

Deborah Taylor +44 (0)20 7004 3148 +44 (0)7787 568375 (m)

Brunswick

Tom Burns +44 (0)20 7404 5959 +44 (0)7974 982333 (m)

Tom Batchelar +44 (0)20 7404 5959 +44 (0)7974 982359 (m)