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

The new series of Cats Does Countdown continues. Jimmy Carr hosts as Jon Richardson and Amy Gledhill take on Richard Ayoade and Guz Khan. Sam Campbell joins Susie Dent in Dictionary Corner. With Rachel Riley.