On iplayer now
www.bbc.co.uk/programmes/m00084tb
Yes, he did have about a third of the seats in the Reichstag. His influence was beginning to decline, so he forced an election. Hindenburg, who was paranoid about communists and socialists, thought he could control Hitler.
I don't think there's an obvious Hitler figure in the UK (yet), but most of the other players are there.
It's not so much that history will repeat itself (well, I hope not) but the parallels such as the influence of the super wealthy, their using of disenchanted working class, the use of violence, which politicians said was nothing to do with them, the manipulation of the law, weak leaders, who thought they could "use" the little Austrian corporal, rigged elections, the blind devotion of the masses, the demonization of "others" (socialists, Jews, gays, the unemployed, etc), fear of the bullies and so on …
Why risk it?