Jimmy Carr hosts the popular quiz as Sean Lock and Henning Wehn compete against Jon Richardson and Victoria Coren Mitchell. Tom Allen joins the show's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters with 'help' from Joe Wilkinson.

Jimmy Carr hosts the popular quiz as Sean Lock and Roisin Conaty compete against Jon Richardson and Nish Kumar. Adam Buxton joins the show's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts the popular quiz as Sean Lock and David O'Doherty compete 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 the popular quiz as Sean Lock and David Mitchell compete against Jon Richardson and Katherine Ryan. The Brett Domino Trio join Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Guest captainandnbsp;Claudia Winklemanandnbsp;andandnbsp;Johnny Vegasandnbsp;go up againstandnbsp;Jon Richardsonandnbsp;andandnbsp;Reginald D Hunter.andnbsp;Sara Pascoeandnbsp;joinsandnbsp;Susie Dentandnbsp;in Dictionary Corner, whileandnbsp;Rachel Rileylooks after the numbers and letters.andnbsp;Joe Wilkinsonandnbsp;will also be appearing.

Jon Richardson and Michelle Wolf take on guest captain Jonathan Ross with Johnny Vegas. Pappy's join Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Guest captain Lee Mack and Catherine Tate vs Sean Lock and Miles Jupp. John Cooper Clarke joins Susie Dent in Dictionary Corner, and Rachel Riley looks after the letters and numbers.

Jimmy Carr hosts as Jessica Hynes and guest captain David Walliams take on Jon Richardson and Rhod Gilbert. Sam Simmons joins Countdown's resident lexicographer Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts the comedy panel show's version of the words and numbers quiz, with Sean Lock and Victoria Coren Mitchell going up against guest captain Lee Mack and Bob Mortimer. Alex Horne and the Horne Section join Susie Dent in Dictionary Corner, while Rachel Riley looks after the vowels, consonants and numbers.

Jimmy Carr hosts the comedy panel show's version of the words and numbers quiz. Guest captain Richard Ayoade is joined by Rob Beckett, going up against Jon Richardson and Claudia Winkleman, with Adam Riches accompanying Susie Dent in Dictionary Corner and Rachel Riley dishing out the all-important consonants, vowels and numbers.

Jimmy Carr hosts the comedy panel show's version of the words and numbers quiz, with Sean Lock and Danny Dyer taking on Joe Wilkinson and Gabby Logan, while David O'Doherty joins Countdown's resident lexicographer Susie Dent in Dictionary Corner and Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts the comedy panel show's version of the words and numbers quiz, with David Mitchell and Cariad Lloyd, taking on Jon Richardson and Russell Howard. Sam Simmons joins Susie Dent in Dictionary Corner, while Rachel Riley looks after the numbers and letters.