Sine 1945, when World War II ended and Britain has its last great electoral landslide, there have been ten prime ministers: Attlee, Churchill, Eden, Macmillan, Home, Wilson, Heath, Callagham, Thatcher and Major. These are politicians of very different background, style and effectiveness, who together span a period of hectic change in Britain's fortunes. Clearly, there is a special need for analysis of their contributions to be coherent and consistent, and thus the pattern set by the first volume in the series, on the US presidency, is particularly relevant to the British case.