Jimmy Carr hosts a brand new episode with guest captain Lee Mack and Catherine Tate going up against Sean Lock and Miles Jupp. John Cooper Clarke joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Guest captain Lee Mack and Bob Mortimer take on Sean Lock and Victoria Coren Mitchell. Alex Horne and the Horne Section join Dictionary Corner, with Susie Dent and Rachel Riley.