John Humphrys presents as four more celebrities put their reputations on the line in the famous black chair. The contenders are Horrible Histories actor Laurence Rickard, Springwatch presenter Martin Hughes-Games, model and presenter Vogue Williams and the BBC's deputy political editor John Pienaar.

John Humphrys puts four celebrities to the test in another episode of the classic quiz. Taking part tonight are the presenter of BBC Click, Spencer Kelly, the Citizen Khan actor Abdullah Afzal, the actress Jessica Regan and the comedian Andrew Maxwell.