Jeremy Corbyn is the most unlikely revolutionary: a middle-aged, middle-class former grammar schoolboy, who honed his radicalism on the mean streets of rural Shropshire. Until recently, he was barely known outside political circles, yet today he is the leader of the Labour Party having won by a landslide, riding a wave of popular enthusiasm. When he was first persuaded to run, not even Corbyn himself dreamed he would somehow tap into a summer 2015 zeitgeist, an unforeseen populist fervour for change. From Corbyn's cosy rural upbringing, through three marriages - including his decision to divorce one wife for sending their son to grammar school - and his long espousal of contentions causes, including Irish republicanism and a free Palestine, Comrade Jeremy is the story of the most unexpected leadership contest ever to take place in modern British politics.