Celebrity Mastermind

David Blunkett answers questions on the Harry Potter novels, Shaun Williamson tackles the life [of] Richard Burton, Antony Worrall Thompson opts for the works of Escoffier, and Jeremy Bowen's knowledge of the Arab/Israeli Six Day War is tested. With John Humphrys.

Bill Oddie, Charlie Higson, Julia Somerville and Germaine Greer answer questions on American jazz, James Bond, Winnie the Pooh and Australian rainforests respectively. John Humphrys asks the questions.

Stephen Fry is tested on Sir Arthur Conan Doyle's Sherlock Holmes, Gyles Brandreth takes the life and works of Sir John Gielguid as his specialist subject, the Poet Laureate Andrew Motion has his knowledge of Philip Larkin tested, and athlete Tanni Grey-Thompson faces questions on the first three Star Wars films.