Jimmy Carr hosts with Sean Lock and Katherine Ryan who take on Jon Richardson and Joe Wilkinson in the classic words and number quiz. Dr John Cooper Clark in Dictionary Corner with Susie Dent and Rachel Riley looks after the numbers.

Jimmy Carr hosts the words and numbers quiz with Jon Richardson and David Mitchell who take on guest captain Joe Wilkinson and Roisin Conaty. Tom Allen is in Dictionary Corner.

Jimmy Carr hosts new editions of the famous words and numbers quiz, as 8 Out of 10 Cats team captains Sean Lock and Jon Richardson are joined by celebrity guests Miles Jupp and Rhod Gilbert. Countdown regular Susie Dent is in Dictionary Corner with Nick Helm, while the country's favourite boffin Rachel Riley provides the letters and numbers with a little help from comedian Joe Wilkinson.

Jimmy Carr hosts the words and numbers quiz that this week pits Sean Locke and Claudia Winkleman against Jon Richardson and Henning Wehn. Nick Helm joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts as Jon Richardson and Rhod Gilbert take on Lee Mack and Rob Beckett. Tim Key is in Dictionary Corner with Susie Dent, and Rachel Riley is assisted by Joe Wilkinson.

Jimmy Carr hosts the game show mash-up, with Rachel Riley and Susie Dent. Jon Richardson and Sara Pascoe take on Sean Lock and Richard Ayoade. Nick Helm joins Susie in Dictionary Corner.

Jimmy Carr hosts as Jon Richardson and Lucy Beaumont take on Roisin Conaty and Joe Wilkinson. Bec Hill joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts as Jonathan Ross and Joe Wilkinson take on Roisin Conaty and Ahir Shah. Catherine Cohen joins Susie Dent in Dictionary Corner while Dr Anne-Marie Imafidon looks after the numbers and letters.

Jimmy Carr hosts while team captain Sean Lock and Vic Reeves take on guest captain Lee Mack with Sara Pascoe. Alex Horne and the Horne Section join Susie in Dictionary Corner.

Jimmy Carr hosts. Sean Lock and Johnny Vegas take on guest captain Sarah Millican with Rob Beckett. Vic Reeves is in Dictionary Corner with Susie Dent and Rachel Riley.

Jimmy Carr hosts. Sean Lock and Bill Bailey take on special guest captain Joe Wilkinson with Isy Suttie. Joe Lycett is in Dictionary Corner with Susie Dent.

Jimmy Carr hosts. Sean Lock and Greg Davies take on Jon Richardson and Holly Walsh. Vic Reeves is in Dictionary Corner with Susie Dent.

Jimmy Carr hosts as Jon Richardson and Cariad Lloyd take on guest captains Alan Carr and Kevin Bridges, Elis James and Jon Robins are in Dictionary Corner, with Susie Dent and Rachel Riley

Jimmy Carr hosts the words and numbers game show mash-up, with `Countdown' regulars Rachel Riley and Susie Dent. Roisin Conaty and Joe Wilkinson play against Jon Richardson and Nabil Abdulrashid. David O'Doherty is in Dictionary Corner.

Jimmy Carr presents as Jon Richardson and Asim Chaudhry take on Joe Wilkinson and Roisin Conaty. Lucy Pearman is in Dictionary Corner with Susie Dent, while Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts another helping of chaos, comedy and Countdown. Joe Wilkinson and Alex Brooker take on Kevin Bridges and Judi Love. Brian Butterfield (Peter Serafinowicz) joins Susie Dent in Dictionary Corner, while maths whizz Rachel Riley looks after the numbers.

Jimmy Carr hosts while 8 Out of 10 Cats team captains Sean Lock and Jon Richardson are joined by celebrity guests. In this show Jason Manford joins Sean, while Rhod Gilbert teams up with Jon. Countdown regular Susie Dent is in the Dictionary Corner with Danny Dyer, while the country's favourite boffin Rachel Riley provides the letters and numbers with a little help from comedian Joe Wilkinson.

Jimmy Carr hosts, alongside team captains Sean Lock and Jon Richardson, who are joined by Jo Brand and Claudia Winkleman. Bill Bailey joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley provide the letters and numbers.

Jimmy Carr hosts the comedy panel show's version of the famous quiz, with team captains Sean Lock and Jon Richardson joined by guests Vic Reeves and Jo Brand. Countdown regular Susie Dent is in Dictionary Corner with Adam Buxton, maths expert Rachel Riley looks after the letters and numbers, and there's a special appearance by Rob Beckett.

Jimmy Carr hosts as Jon Richardson and Jack Whitehall take on Sean Lock and Roisin Conaty. Rob Beckett joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley.

Jimmy Carr hosts, as Sean Lock and Miles Jupp take on Jon Richardson and Greg Davies. Holly Walsh is in Dictionary Corner.

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 Sean Lock and Miles Jupp v guest captain Alan Carr and Roisin Conaty. Ivan Brackenbury joins Susie in Dictionary Corner.

Jimmy Carr hosts as Sean Lock and Richard Ayoade take on Jon Richardson and Katherine Ryan. David O'Doherty is in Dictionary Corner with Susie Dent, and Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts the chaotic comedy twist on Channel 4's classic brainteaser quiz. In this episode, Joe Wilkinson and Josh Widdicombe take on Rhod Gilbert and Thaniya Moore. Frankie Monroe (Joe Kent-Walters) joins Susie Dent in Dictionary Corner, while maths whizz Rachel Riley looks after the numbers.