LONDON - MAY 13:  Chancellor Gordon Brown smiles as he arrives to speak at the Fabian Society on May 13, 2007 in London, England. The event, billed as a Labour leadership candidate's hustings saw Gordon Brown, Michael Meacher and John McDonnell debating the future of the Labour Party and government at the left of centre think tank. Getty Images logo Getty Images 57 months ago

LONDON - MAY 13: Chancellor Gordon Brown smiles as he arrives to speak at the Fabian Society on May 13, 2007 in London, England. The event, billed as a Labour leadership candidate's hustings saw Gordon Brown, Michael Meacher and John McDonnell debating the future of the Labour Party and government at the left of centre think tank.