Katherine Ryan and Joe Lycett take on Sean Lock and Johnny Vegas. Jimmy Carr hosts. Rachel Riley looks after the numbers. Christopher Bliss joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts with Rachel Riley and Susie Dent. Sean Lock and Paul Foot take on Jon Richardson and Angela Barnes. John Cooper Clarke joins Dictionary Corner.

Jimmy Carr and Rachel Riley host as Sean Lock and Harriet Kemsley compete against Jon Richardson and Joe Lycett. Mat Ewins joins Susie Dent in Dictionary Corner.

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.

Jon Richardson and Joe Wilkinson take on Lee Mack and Katherine Ryan. Brett Domino is in Dictionary Corner. Jimmy Carr hosts, with Rachel Riley and Susie Dent.

Jimmy Carr hosts as Sean Lock and Kerry Godliman take on Jon Richardson and Joe Wilkinson. With Susie Dent, Rachel Riley and Dictionary Corner guest Mr Swallow, aka Nick Mohammed.

Jimmy Carr hosts as Jon Richardson and Tom Allen take on Sean Lock and Rosie Jones. With guest Adam Riches as Sean Bean, plus experts Susie Dent and Rachel Riley.

Jimmy Carr hosts as Sean Lock and Daisy May Cooper take on Richard Ayoade and Ivo Graham. Adam Buxton joins Susie Dent in Dictionary Corner and Joe Wilkinson assists Rachel Riley.

Jimmy Carr hosts the classic words and numbers quiz as Sean Lock and Harry Hill take on Jon Richardson and Rose Matafeo, while Alex Horne joins Susie Dent in Dictionary Corner. Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts as Sean Lock and Joe Wilkinson take on Jon Richardson and Kiri Pritchard-McLean. The Brett Domino Trio join Susie Dent 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 as Sean Lock and Miles Jupp take on Jon Richardson and Sophie Duker in the classic words and numbers quiz. Lee and Dean join Susie Dent in Dictionary Corner. Joe Wilkinson is at the numbers board with Rachel Riley.

Jimmy Carr hosts as Sean Lock and Kevin Bridges take on Jon Richardson and Victoria Coren Mitchell in the classic words and numbers quiz. Spencer Jones joins Susie Dent in Dictionary Corner, and Rachel Riley looks after the numbers and letters.

Jimmy Carr hosts as Sean Lock and Harriet Kemsley take on Jon Richardson and Chris McCausland. Nick Helm is in Dictionary Corner and Joe Wilkinson is at the numbers board.

Sean Lock and Miles Jupp take on Jon Richardson and Rose Matafeo, while Vic Reeves joins Susie Dent in Dictionary Corner. Hosted by Jimmy Carr, with regular Countdown mathematician Rachel Riley looking after the numbers and letters.

Sean Lock and Victoria Coren Mitchell take on Jon Richardson and James Acaster in the classic panel game. Morgana Robinson joins Susie Dent in Dictionary Corner, with Rachel Riley.

Sean Lock and Joe Wilkinson take on Jon Richardson and Sara Pascoe. Sam Simmons is in Dictionary Corner, while maths whizz Rachel Riley looks after the letters and numbers.

Sean Lock and Rob Beckett take on special guest team captains Alan Carr and Sarah Millican. Nick Mohammed joins Susie Dent is in Dictionary Corner, while maths whizz Rachel Riley looks after the letters and numbers.

Sean Lock and Sara Pascoe take on Alan Carr and Tom Allen, while Rosie Jones is in Dictionary Corner.

Sean Lock and Harriet Kemsley take on special guest team captain Alan Carr and Catherine Tate, while Adam Buxton joins Susie Dent in Dictionary Corner

Sean Lock and Katherine Ryan take on Jon Richardson and Joe Wilkinson. Adam Riches as Sean Bean is in Dictionary Corner.

Jimmy Carr hosts the words and numbers quiz that this week pits Sean Locke and Johnny Vegas against guest captain Alan Carr and Lou Sanders. The Brett Domino Trio join Susie Dent in Dictionary Corner.

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 the words and numbers quiz that this week pits Sean Locke and Joe Wilkinson against guest captain Richard Ayoade and Aisling Bea. Tom Allen joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts the words and numbers quiz that this week pits Sean Locke and David Mitchell against Jon Richardson and Sara Pascoe. Ellie White and Natasia Demetriou join Susie Dent in Dictionary Corner.

Jimmy Carr hosts the words and numbers quiz that this week pits Sean Locke and Michelle Wolf against Jon Richardson and Rob Beckett. Spencer Jones joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts the words and numbers quiz that this week pits Sean Locke and Joe Wilkinson against Jon Richardson and Harriet Kemsley. James Veitch joins Susie Dent in Dictionary Corner.

Katherine Ryan hosts a special, celebrating 100 years of women's suffrage. Roisin Conaty and Jessica Hynes go against Sara Pascoe and Lolly Adefope. Also featuring Morgana Robinson, Susie and Rachel.

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 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 Rob Beckett take on Jon Richardson and Claudia Winkleman. Plus special guests Nick Mohammed and Joe Wilkinson.

Jimmy Carr hosts as Sean Lock and Phil Wang take on guest captain Alan Carr and Harriet Kemsley. Plus special guests David O'Doherty and Joe Wilkinson.

Jimmy Carr hosts as Sean Lock and Richard Ayoade take on Jon Richardson and Jessica Knappett. Plus special guests Alex Horne and the Horne Section.

Sean Lock and Kevin Bridges take on Joe Wilkinson and Victoria Coren Mitchell. Adam Kay joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts the final in the current series. Sean Lock and Roisin Conaty take on guest captain Alan Carr and Joe Lycett. Plus guest Spencer Jones in Dictionary Corner.

Jimmy Carr hosts as Jon Richardson and Joe Wilkinson take on guest captain Kevin Bridges and Jessica Knappett. With Dr John Cooper Clark in Dictionary Corner.

Jimmy Carr hosts as Lee Mack and Victoria Coren Mitchell take on Alan Carr and Dane Baptiste, Sam Simmons is in Dictionary Corner with Susie Dent and Rachel Riley

Jimmy Carr hosts as Alan Carr and Josh Widdicombe take on Joe Wilkinson and Sara Pascoe. Bill Bailey is in Dictionary Corner with Susie Dent, and Rachel Riley.

Jimmy Carr hosts as Johnny Vegas and Rhod Gilbert take on Joe Wilkinson and Roisin Conaty, Tom Allen is in Dictionary Corner

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 show while guest captain Kathy Burke and Roisin Conaty take on guest captains Johnny Vegas and Bob Mortimer. John Cooper Clarke is in Dictionary Corner.

Jimmy Carr hosts the show as captain Jon Richardson and Jason Manford take on guest captain Alan Carr and Katherine Ryan. Ivan Brackenbury is in Dictionary Corner.

Jimmy Carr hosts with Sean Lock and Vic Reeves who take on Jon Richardson and Sara Pascoe. David O'Doherty is in Dictionary Corner with Susie Dent, and Rachel Riley.

Jimmy Carr hosts as Jason Manford and Joe Wilkinson take on Lee Mack and Fay Ripley, Alex Horne and Horne Section are in Dictionary Corner.

The comic mash-up, hosted by Jimmy Carr. Jon Richardson and Joe Lycett take on Sean Lock and Michelle Wolf, while Adam Riches is in Dictionary Corner.

Jimmy Carr hosts, and it's Jon Richardson and Jonathan Ross against Lee Mack and Victoria Coren Mitchell, with Jessie Cave in Dictionary Corner.

Jimmy Carr hosts as Sean Lock and Stephen Mangan take on guest captains Richard Ayoade and Katherine Ryan. Bill Bailey is in Dictionary Corner

Jimmy Carr hosts with Sean Lock and Stephen Mangan who take on Noel Fielding and Fay Ripley, the Brett Domino Trio are in Dictionary Corner

Jimmy Carr hosts the words and numbers quiz with Jon Richardson and Phil Wang vs guest captain Russell Howard and Roisin Conaty. Nick Helm is in Dictionary Corner.

Jimmy Carr hosts while Jon Richardson and David O'Doherty take on guest captain Johnny Vegas and Jamie Laing. Holly Walsh is in Dictionary Corner.

Jimmy Carr hosts the words and numbers quiz with Sean Lock and Joe Wilkinson who take on Jon Richardson and Jayde Adams, David Baddiel is in Dictionary Corner.

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 while Jon Richardson and Michelle Wolf take on guest captain Jonathan Ross and Johnny Vegas, Pappy's is in Dictionary Corner

Jimmy Carr hosts, and it's Jon Richardson and James Acaster versus Lee Mack and Sarah Millican, with John Cooper Clarke in Dictionary Corner

Jimmy Carr hosts, and it's Jon Richardson and Chris Addison against Joe Wilkinson and Katherine Ryan, with David O'Doherty in Dictionary Corner.

Guest captain David Walliams and Jonathan Ross take on Jon Richardson and Joe Lycett. Isy Suttie joins Susie Dent in Dictionary Corner, while Rachel looks after the letters and numbers.

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.

Guest captain David Walliams and Jessica Hynes take on Jon Richardson and Rhod Gilbert. Sam Simmons is in Dictionary Corner, with Susie Dent and Rachel Riley.

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.

Jimmy Carr hosts with guest captain Richard Ayoade and Rob Beckett vs Jon Richardson and Claudia Winkleman. Adam Riches joins Dictionary Corner, with Susie Dent and Rachel Riley.

Jimmy Carr hosts with Sean Lock and Danny Dyer vs Joe Wilkinson and Gabby Logan. David O'Doherty joins Dictionary Corner, with Susie Dent and Rachel Riley.

Jimmy Carr hosts, David Mitchell and Cariad Lloyd take on Jon Richardson and Russell Howard. Sam Simmons joins Susie Dent in Dictionary Corner, while Rachel Riley flips the tiles.

Jimmy Carr hosts as Sean Lock and Henning Wehn go up against Jon Richardson and Victoria Coren Mitchell. Tom Allen joins Dictionary Corner and there's help from Joe Wilkinson.

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 hosts as Sean Lock and David O'Doherty go up against Jon Richardson and Natasia Demetriou. John Kearns joins Susie Dent in Dictionary Corner, with Rachel Riley.

Jimmy Carr hosts as Sean Lock and David Mitchell go up against Jon Richardson and Katherine Ryan. Brett Domino Trio joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts with guest captain Claudia Winkleman and Johnny Vegas versus Jon Richardson and Reginald D Hunter. Sara Pascoe joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts while Sean Lock and Vic Reeves take on Jon Richardson and Aisling Bea. David O'Doherty is in Dictionary Corner with Susie Dent and Rachel Riley.

Sean Lock and Bob Mortimer take on Jon Richardson and Holly Walsh. Isy Suttie's in Dictionary Corner with Susie Dent. Claudia Winkleman stands in for Rachel Riley on letters-and-numbers duty.

Jimmy Carr hosts. Jon Richardson and Alex Brooker take on Johnny Vegas and Sara Pascoe. Tom Allen's in Dictionary Corner. Claudia Winkleman and Rob Beckett stand in for Rachel Riley.

Jimmy Carr hosts while Sean Lock and Rebecca Front take on Jon Richardson and Kevin Bridges. Joe Lycett is in Dictionary Corner with Susie Dent and Rachel Riley is on letter-and-number duty.

Jimmy Carr presides over the hit comedy panel show where Sean Lock and Katherine Ryan take on Jon Richardson and David Mitchell. Nick Helm is in Dictionary Corner.

Jimmy Carr hosts as Sean Lock and Jason Manford take on Jon Richardson and Roisin Conaty, while Sam Simmons joins Susie Dent in Dictionary Corner, with Rachel Riley

Sean Lock and Rob Beckett take on Jon Richardson and Cariad Lloyd. Jamie Laing is in Dictionary Corner with Susie Dent, Rachel Riley deals the letters and numbers and Jimmy Carr hosts.

Jimmy Carr hosts with Sean Lock and Miles Jupp, who take on Jon Richardson and Sara Pascoe. Sam Simmons is in Dictionary Corner with Susie Dent and Rachel Riley.

Jimmy Carr hosts while Sean Lock and Isy Suttie take on Jon Richardson and Richard Osman. Alex Horne and the Horne Section are in Dictionary Corner with Susie Dent and Rachel Riley.

Jimmy Carr hosts with Sean Lock, Bill Bailey and Paul Foot who take on Sarah Millican, Rob Delaney and Romesh Ranganathan. Nina Conti joins Susie Dent in Dictionary Corner, with Rachel Riley.

Jimmy Carr hosts with Sean Lock and Kevin Bridges who take on Jon Richardson and Kathy Burke. Joe Lycett joins Susie Dent, while Nick Helm 'assists' Rachel Riley.

Jimmy Carr hosts as Sean Lock and Rhod Gilbert go up against Jon Richardson and Sara Pascoe; Johnny Vegas is in Dictionary Corner while Joey Essex 'assists' Rachel Riley

Jimmy Carr hosts, while Jon Richardson and Katherine Ryan take on Sean Lock and Rob Beckett, Greg Davies is in Dictionary Corner

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

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 Bob Mortimer take on Sarah Millican and Katherine Ryan. Alex Horne and the Horne Section joins Dictionary Corner with Susie Dent, and Rachel Riley.

Jimmy Carr hosts. Sean Lock and Roisin Conaty take on guest captain Sarah Millican and Rhod Gilbert. David O'Doherty joins Dictionary Corner with Susie Dent and Rachel Riley.

Jimmy Carr hosts. Sean Lock and Seann Walsh take on guest captain Joe Wilkinson and Danny Dyer. Bill Bailey is in Dictionary Corner with Susie Dent and Rachel Riley.

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 Mel Giedroyc vs guest captain Lee Mack with David O'Doherty. Susie Dent is joined by Adam Buxton in Dictionary Corner, with Rachel Riley.

Jimmy Carr hosts. Sean Lock and Freddie Flintoff take on guest captain Bill Bailey with Roisin Conaty. Rob Beckett is in Dictionary Corner, with Susie Dent and Rachel Riley.

Jimmy Carr hosts. Sean Lock and Liza Tarbuck take on special guest captain Sarah Millican with Romesh Ranganathan. Phill Jupitus is in Dictionary Corner with Susie Dent.

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 as Sean Lock and Henning Wehn take on guest captain Bill Bailey with Jessica Hynes. Tom Allen is in Dictionary Corner with Susie Dent, plus Rachel Riley with the numbers and letters.

Jimmy Carr hosts, with Sean Lock and Sara Pascoe taking on Jon Richardson and Josh Widdicombe. Susie Dent is joined by Alex Horne & The Horne Section in Dictionary Corner.

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 Sean Lock and David Mitchell take on Jon Richardson and Katherine Ryan. David O'Doherty joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'assists' Rachel Riley.

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 Jon Richardson and Aisling Bea take on Sean Lock and Reginald D. Hunter. Holly Walsh is in Dictionary Corner with Susie Dent, while Joe Wilkinson attempts to 'help' Rachel Riley.

Jimmy Carr hosts as Jon Richardson and Johnny Vegas take on Sean Lock and Romesh Ranganathan. Josie Long joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley.

Jimmy Carr plays host as Jon Richardson and Bob Mortimer take on Sean Lock and Vic Reeves, while Jack Whitehall joins Susie Dent in Dictionary Corner,

Jimmy Carr hosts with Sean Lock and Jason Manford going up against guest captain Sarah Millican, and Jonathan Ross. Bill Bailey joins Susie Dent in Dictionary Corner.

Jimmy Carr hosts the first of three new comedy editions of the famous quiz. Team captains Sean Lock and Jon Richardson are joined by Peep Show star David Mitchell and stand-up comedienne Roisin Conaty. Phill Jupitus is in Dictionary Corner with Susie Dent, while Joe Wilkinson `helps' Rachel Riley with 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 David Baddiel and Trevor Noah. Countdown regular Susie Dent is in Dictionary Corner with Joey Essex, while maths expert Rachel Riley provides the letters and numbers with help from Alex Horne and the Horne Section.

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 returns with Sean Lock and Jon Richardson, who are joined by Jonathan Ross and Roisin Conaty. David O'Doherty joins Susie Dent in Dictionary Corner, and Joe Wilkinson 'helps' Rachel Riley.

Guests are Freddie Flintoff and Rhod Gilbert. Henning Wehn joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley provide the letters and numbers.

Jimmy Carr and team captains Sean Lock and Jon Richardson are joined by Josie Long and Rob Beckett. Vic Reeves joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley.

Jimmy Carr hosts the comedy panel show's version of the famous quiz, with team captains Sean Lock and Jon Richardson joined by guests Jason Manford and Stephen Mangan. Countdown regular Susie Dent is in Dictionary Corner with Tim Key, while maths expert Rachel Riley provides the letters and numbers with a little `help' from 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, alongside team captains Sean Lock and Jon Richardson, who are joined by Bill Bailey and Josh Widdicombe. Jake Yapp joins Susie Dent in Dictionary Corner, while Joe Wilkinson 'helps' Rachel Riley provide the letters and numbers.

Jimmy Carr hosts the Cats/Countdown mash-up, with Sean Lock, Jon Richardson, Bob Mortimer and Richard Osman. Matthew Crosby joins Susie Dent in Dictionary Corner, and Joe Wilkinson 'helps' Rachel.

Jimmy Carr hosts the famous words and numbers quiz with regular 8 Out of 10 Cats team captains Sean Lock and Jon Richardson who play against each other. Celebrity guests joining the teams are Rhod Gilbert, Kevin Bridges and Josie Long, alongside Joe Wilkinson, Countdown's resident lexicographer Susie Dent and the country's favourite boffin Rachel Riley.

Jimmy Carr plays host along with regular 8 Out of 10 Cats team captains Sean Lock and Jon Richardson who are joined by Miles Jupp and Aisling Bea. Countdown regular Susie Dent is in Dictionary Corner with help from Nick Helm while the country's favourite boffin Rachel Riley provides the letters and numbers with help from comedian Joe Wilkinson.

Jimmy Carr hosts the comedy panel show's version of the famous quiz, with team captains Sean Lock and Jon Richardson joined by guests Kathy Burke and Josh Widdicombe. Countdown regular Susie Dent is assisted in Dictionary Corner by Dara Ó Briain, while Rachel Riley provides the letters and numbers with a little help from Joe Wilkinson

Jimmy Carr hosts this edition along with regular 8 Out of 10 Cats team captains Sean Lock and Jon Richardson who are joined by Dara Ó Briain and Sharon Horgan. Countdown's Susie Dent is in Dictionary Corner with help from Adam Buxton, while Rachel Riley provides the letters and numbers with 'help' from comedian Joe Wilkinson.

Jimmy Carr hosts the show, with captains Sean Lock and Jon Richardson who are joined by James Corden and Jack Dee. Joe Lycett and Joe Wilkinson assist Susie Dent and Rachel Riley.

Jimmy Carr hosts with 8 Out of 10 Cats team captains Sean Lock and Jon Richardson who are joined by Kevin Bridges and James Corden. Peter Serafinowicz is in Dictionary Corner with Countdown's Susie Dent, while Rachel Riley provides the letters and numbers with 'help' from Joe Wilkinson.

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 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 famous words and numbers quiz, as 8 Out of 10 Cats team captains Sean Lock and Jon Richardson are joined by celebrity guests Sarah Millican and Humphrey Ker. Countdown regular Susie Dent is in Dictionary Corner with Rich Hall, 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 iconic words and numbers quiz, as 8 Out of 10 Cats team captains Sean Lock and Jon Richardson are joined by celebrity guests Sarah Millican and Chris Ramsey. Countdown regular Susie Dent shares Dictionary Corner with Abandoman, while the country's favourite boffin Rachel Riley dispenses the letters and numbers with a little help from comedian Joe Wilkinson.

Jimmy Carr hosts this edition with captain Jon Richardson and special guest captain Lee Mack who are joined by celebrity guests Bob Mortimer and Adam Hills. Countdown regular Susie Dent is in Dictionary Corner with help from Alex Horne and the Horne Section while the country's favourite boffin, Rachel Riley, provides the letters and numbers with a little help from comedian Joe Wilkinson.

Jon Richardson and special guest captain Lee Mack are joined by celebrity guests Henning Wehn and David O'Doherty. Countdown regular Susie Dent is joined by Vic Reeves in Dictionary Corner, while Rachel Riley provides the letters and numbers with a little 'help' from comedian Joe Wilkinson.

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 famous words and numbers quiz as 8 Out of 10 Cats team captain Jon Richardson alongside actor Stephen Mangan take on Lee Mack and 'Pointless' boffin Richard Osman. Henning Wehn is in the Dictionary Corner along with Countdown regular Susie Dent. Meanwhile, Rachel Riley provides the letters and numbers with a little help from comedian Joe Wilkinson.

The Original Episode of 8 Out of 10 Cats Does Countdown which was aired during Channel 4's Mash-Up Week

Jimmy Carr, Sean Lock and Jon Richardson take on the famous words and numbers quiz. Jimmy Carr hosts proceedings, and Sean Lock faces Jon Richardson in a rematch of the original encounter. David O'Doherty is in Dictionary Corner along with Countdown regular Susie Dent. Meanwhile the country's favourite boffin Rachel Riley provides the letters and numbers with a little help from comedian Joe Wilkinson.

Jon Richardson and special guest captain Lee Mack are joined by celebrity guests Henning Wehn and David O'Doherty. Countdown regular Susie Dent is joined by Vic Reeves in Dictionary Corner, while Rachel Riley provides the letters and numbers with a little 'help' from comedian Joe Wilkinson.

Jimmy Carr hosts this festive edition as Sean Lock and Kathy Burke take on Jon Richardson and David Baddiel. Alex Horne and The Horne Section joins Susie Dent and Rachel Riley.

Jimmy Carr hosts this festive edition as Sean Lock and Johnny Vegas take on Jon Richardson and Katherine Ryan. David O'Doherty joins Susie Dent and Rachel Riley.

Jimmy Carr hosts this festive edition as Sean Lock and Kathy Burke take on Jon Richardson and Russell Howard. Joe Lycett joins Susie Dent and Rachel Riley.

Jimmy Car hosts while Johnny Vegas and Sara Pascoe take on Jon Richardson and Richard Osman . Susie Dent is joined by David O'Doherty in Dictionary Corner, with Rachel Riley and Joe Wilkinson.

Jimmy Carr hosts a special version of the game show to tie in with the General Election. Team captains Jon Richardson and Alan Carr are joined by guests Romesh Ranganathan, Sarah Millican and John Kearns.

Jimmy Carr hosts as Jon Richardson and Catherine Tate take on Sean Lock and Joe Wilkinson. Joe Lycett joins Dictionary Corner, with Susie Dent and Rachel Riley.

Jimmy Carr hosts as Sean Lock and Kathy Burke take on Jon Richardson and David Mitchell. Plus James Acaster and Joe Wilkinson join Susie Dent and Rachel Riley.

Jimmy Carr hosts the special Christmas edition, while Sean Lock and Bob Mortimer take on Jon Richardson and Lucy Beaumont. They are joined by guests Adam Buxton, Joe Wilkinson, Susie Dent and Rachel Riley.

A chance to watch top moments from the comedy game-show mash-up, with guests including Richard Ayoade, Aisling Bea, Alan Carr, David Mitchell, Katherine Ryan and Johnny Vegas.

A chance to watch top moments, as comedians including Kevin Bridges, Roisin Conaty, Joe Lycett and Joe Wilkinson join Jimmy Carr, Susie Dent and Rachel Riley.

Jimmy Carr, Susie Dent and Rachel Riley host a festive edition. Jon Richardson and Sarah Millican take on Sean Lock and David Mitchell. With guest David O'Doherty.

A classic episode of '8 Out of 10 Cats Does Countdown' featuring the best of Sean Lock

Jimmy Carr hosts a festive edition, as Jon Richardson and Sarah Millican take on Lee Mack and Jason Manford. With Nick Mohammed, Joe Wilkinson and Countdown regulars Susie Dent and Rachel Riley.