National Grid PLC — Annual Report 2011

Jun 29, 2011

11-K 1 y91883e11vk.htm FORM 11-K e11vk PAGEBREAK

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 11-K

þ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

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For the fiscal year ended December 31, 2010

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OR

o TRANSITION REPORT PURSUANT TO 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 1-14958

National Grid USA Companies’ Incentive Thrift Plan I National Grid USA 40 Sylvan Rd Waltham, MA 02451-1120

National Grid plc 1-3 Strand London WC2N 5EH England

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REQUIRED INFORMATION

The financial statements required by Form 11-K are filed as exhibits and incorporated herein by reference.

EXHIBITS

99.1	Financial statements of National Grid USA Companies’ Incentive Thrift Plan I
99.2	Consent of Clifton Gunderson LLP, independent registered public accounting firm

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the National Grid USA Service Company, Inc. Benefits Committee (the Plan Administrator for the National Grid USA Companies’ Incentive Thrift Plan I) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

/s/ Lorraine Lynch
Lorraine Lynch
Member National Grid USA Service Company, Inc. Investment Committee

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