Christmas Special: David Walliams, JLS, McFly and Hilary Devey

Alan's Christmas special is full of festive frolics plus the odd song or two by Alan's Christmas house band McFly, who perform a special medley of their greatest hits. Chart toppers JLS join Alan on the sofa along with ex-Dragon's Den star Hilary Devey, who chats to Alan about her two new programmes for Channel 4, and David Walliams who drops by to talk about Christmas.