8 Out of 10 Cats Does Countdown: Season 18, Episode 7

18 - 7: Katherine Ryan, Joe Wilkinson, Adam Riches

Sean Lock and Katherine Ryan take on Jon Richardson and Joe Wilkinson in the classic words-and-numbers quiz, while Adam Riches as Sean Bean joins Susie Dent in Dictionary Corner. Hosted by Jimmy Carr, with regular Countdown mathematician Rachel Riley looking after the numbers and letters.