Jimmy Carr hosts the comedy panel show's version of the famous quiz, with team captains Sean Lock and Jon Richardson joined by guests Jonathan Ross and Roisin Conaty. Countdown regular Susie Dent is in Dictionary Corner with David O'Doherty, while maths whizz Rachel Riley provides the letters and numbers with a little 'help' from 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 Andrew Flintoff and Rhod Gilbert. Countdown regular Susie Dent is in Dictionary Corner with Henning Wehn, while maths whizz Rachel Riley provides the letters and numbers with a little `help' from Joe Wilkinson.

Tonight, Jimmy Carr introduces Josie Long and Rob Beckett to play alongside Jon Richardson and Sean Lock, Vic Reeves waxes lyrical in Dictionary Corner and Joe Wilkinson turns up once more to 'assist' 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 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.

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