Guz Khan, Katherine Ryan, Joe Wilkinson, Alasdair Beckett-King

Jimmy Carr hosts a hybrid of the comedy panel show and words-and-numbers quiz, as on Jon Richardson and Guz Khan take on guest captain Katherine Ryan and Joe Wilkinson. Mathematician Rachel Riley looks after the letters and numbers, while Alasdair Beckett-King joins lexicographer Susie Dent in Dictionary Corner