Jason Manford, Roisin Conaty, Sam Simmons

Jimmy Carr returns with this comedy version of the famous afternoon game show, with Sean Lock, Bill Bailey and Paul Foot going up against guest captain Sarah Millican with Rob Delaney and Romesh Ranganathan. Nina Conti joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the letters and numbers at the board