Jimmy Carr returns to host a brand new episode with guest captain Claudia Winkleman and Johnny Vegas going up against Jon Richardson and Reginald D Hunter. Sara Pascoe joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters. Joe Wilkinson will also be appearing.

Jimmy Carr hosts with Sean Lock and David Mitchell going up against Jon Richardson and Katherine Ryan. Brett Domino Trio joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Jimmy Carr returns to host a brand new episode with Sean Lock and David O'Doherty who go up against Jon Richardson and Natasia Demetriou. John Kearns joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts as Sean Lock and Roisin Conaty go up against Jon Richardson and Nish Kumar. Adam Buxton joins Susie Dent in Dictionary Corner, with Rachel Riley.

Jimmy Carr returns to host a brand new episode with Sean Lock and Henning Wehn who go up against Jon Richardson and Victoria Coren Mitchell. Tom Allen joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters with 'help' from Joe Wilkinson.