Sir Ed Davey is a mallet wielding, man on a mission. That mission is to demolish the Conservative 'blue wall' which he's already made a hole in after the surprise Liberal Democrat victory at the Chesham and Amersham by-election in June this year. With a First class degree from Oxford, he could have ended up as a spy, but instead chose the path well trodden for a PPE graduate, politics, taking a job as Economics Researcher to the then leader, Paddy Ashdown. He's committed to renewable energy and brought us wind farms during a stint as Energy Secretary in the Coalition Government in 2012, but can he keep the lights on for the Liberal Democrats?

Presenter: Mark Coles

Producers: Julie Ball Bob Howard Editor: Richard Vadon