<p>Harold Wilson is the only post-war leader of any party to serve as Britain''s Prime Minister on two separate occasions. In total he won four General Elections, spending nearly eight years in Downing Street. Half a century later, he is still unbeaten, Labour''s greatest ever election winner. How did he do it - and at what cost?<br><br>Critics then and now have painted him as an opportunistic political calculator, even as a Soviet secret agent. In this powerful new portrait, drawing on previously unavailable sources and first-hand parliamentary insight, acclaimed biographer Nick Thomas-Symonds reveals a more complex figure. Wilson was a new kind of politician but, in his own way, this media-savvy harbinger of modernity was also a deeply traditional man, whose actions often suggest nothing less than a spiritual mission.<br><br>In an intriguing paradox, Wilson, influenced by the distinctively democratic faith of his Yorkshire boyhood, united a fractured Labour Party, ushering in the cul