Jimmy Carr hosts a special Christmas edition of 8 Out Of 10 Cats Does Countdown, packed with festive surprises. Joe Lycett and Danny Dyer take on Jon Richardson and Roisin Conaty. Rachel Riley looks after the letters and numbers, and Mr Swallow (Nick Mohammed) joins Susie Dent in Dictionary Corner. And as a Christmas treat, Cats Does Countdown royalty Joe Wilkinson is back to help/annoy Rachel.

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

Jimmy Carr hosts the words and numbers game show mash-up, with 'Countdown' regulars Rachel Riley and Susie Dent. Alan Carr and Harriet Kemsley play against Jonathan Ross and Maisie Adam. Huge Davies is in Dictionary Corner.

Jimmy Carr hosts the words and numbers game show mash-up, with Countdown regulars Rachel Riley and Susie Dent. Jon Richardson and Jo Brand take on Joe Wilkinson and Jamali Maddix. Rachel Parris is in Dictionary Corner.

Jimmy Carr hosts the words and numbers game show mash-up, with Countdown regulars Rachel Riley and Susie Dent. Richard Ayoade and Sara Pascoe take on Jon Richardson and Chris McCausland. Morgana Robinson is in Dictionary Corner.

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 hosts the words and numbers game show mash-up, with 'Countdown' regulars Rachel Riley and Susie Dent. Jonathan Ross and Russell Kane take on Alan Carr and Judi Love. Josh Jones is in Dictionary Corner.