Tess Daly and Claudia Winkleman host a special festive edition of the show, which sees Jay Blades, Fred Sirieix, Mel Giedroyc, Moira Stuart, Anne-Marie and Adrian Chiles taking to the floor to impress judges Craig Revel Horwood, Shirley Ballas, Motsi Mabuse and Anton Du Beke. The contestants will also be taking part in a group routine alongside the professional dancers, and there will be musical performances from guests Jamie Cullum, Gary Barlow and Sheridan Smith