Today, Oswald Mosley is remembered as one of Britain's most unpleasant and despised political figures. Yet at the opening of his career he was a rising star of British politics. Charismatic, talented and intelligent, it seemed that that Mosley was destined for greatness. If he had not abandoned mainstream politics for his journey towards fascism, he could have reached 10 Downing Street.

So what if things had turned out differently?

In A Greater Britain, Ed Thomas charts the alternative career of a successful Oswald Mosley, who scales the heights of power in inter-war Britain, becoming one of the 20th century's most influential – and divisive – figures in the process. As Mosley entrenches himself in power, befriends Benito Mussolini and reforms Britain along his own, corporatist lines, it quickly becomes apparent that world history will never be the same again.