EDINBURGH, UNITED KINGDOM - FEBRUARY 22:  Gordon Brown, Chancellor of the Exchequer, addresses a audience of Labour Party members and business people February 22, 2007 in Edinburgh, Scotland. Former environment minister Michael Meacher has announced he will challenge Gordon Brown for the Labour leadership. Getty Images logo Getty Images 60 months ago

EDINBURGH, UNITED KINGDOM - FEBRUARY 22: Gordon Brown, Chancellor of the Exchequer, addresses a audience of Labour Party members and business people February 22, 2007 in Edinburgh, Scotland. Former environment minister Michael Meacher has announced he will challenge Gordon Brown for the Labour leadership.