Jimmy Carr hosts a combination of the comedy panel show and the long-running words and numbers quiz, inviting Jon Richardson and Jack Dee to take on Lee Mack and Rose Matafeo in a festive-themed edition. They're joined by guests Stevie Martin and Joe Wilkinson, and Countdown regulars Susie Dent and Rachel Riley.

Jimmy Carr hosts a combination of the comedy panel show and the long-running words and numbers quiz, with Jonathan Ross and Russell Kane taking on Alan Carr and Judi Love. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate, while Josh Jones is in Dictionary Corner.

Jimmy Carr hosts the comedy words-and-numbers quiz as Roisin Conaty and Joe Wilkinson take on Jon Richardson and Nabil Abdulrashid. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate, aided by David O'Doherty in Dictionary Corner.

Jimmy Carr hosts the comedy words-and-numbers quiz as Richard Ayoade and Sara Pascoe take on Jon Richardson and Chris McCausland. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate, aided by Morgana Robinson in Dictionary Corner.

Jimmy Carr hosts and regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate as Jon Richardson and Jo Brand take on Joe Wilkinson and Jamali Maddix. Rachel Parris is in Dictionary Corner.

Jimmy Carr hosts and regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate Alan Carr and Harriet Kemsley play against Jonathan Ross and Maisie Adam. Huge Davies is in Dictionary Corner.

Jimmy Carr hosts a combination of the comedy panel show and the long-running words-and-numbers quiz, with Jon Richardson and Lucy Beaumont taking on Richard Ayoade and Joe Wilkinson. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate, alongside Dictionary Corner guest Finlay Christie.