Kevin Bridges, Kathy Burke, Joe Lycett

Jack Whitehall and Roisin Conaty join host Jimmy Carr and team captains Sean Lock and Jon Richardson for more comic innuendos, unpredictable conundrums and unforgivable puns in the comedy panel show's version of the words-and-numbers quiz. Rob Beckett is with Countdown's resident lexicographer Susie Dent in Dictionary Corner, while comedian Joe Wilkinson is back to 'help' Rachel Riley with her mathematical sums and duties.