Four more celebrities face John Humphrys and try to answer questions in the black chair. The contenders hoping to show off their knowledge tonight are Ade Edmondson, Bill Turnbull, Jan Ravens and Benjamin Zephaniah.

John Humphrys asks the questions in this celebrity version of television's toughest quiz. The famous faces being quizzed on their specialist subject and general knowledge tonight are Wayne Sleep, Yvette Fielding, Spoony and Brian Sewell. Subjects include Henry VIII and Ray Charles.