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When did Gordon Brown serve as prime minister of the United Kingdom?

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Gordon Brown served as prime minister of the United Kingdom from 2007 to 2010.1

He officially assumed the office on June 27, 2007, following the resignation of Tony Blair. Brown remained in the position until May 11, 2010, when he tendered his resignation after the Labour Party failed to secure a majority in the British general election and subsequent negotiations to form a coalition government were unsuccessful.2