The contestants' specialist subjects include Formula One between 1990 and 2004, sharks, the life and reign of Queen Victoria and Anthony Horowitz's Alex Rider novels.
Topics include the works of Jane Austen, the Eurovision Song Contest, Albert Einstein and the history of the Grand National 1990-2004.
John Humphrys poses questions about JK Rowling's Harry Potter novels, the history of the VW Beetle, Liverpool Football Club 1995-2004, and the Girls in Love series by Jacqueline Wilson.
The contestants answer questions about the life of Mozart, Malorie Blackman's Noughts and Crosses series, British Olympic medallists from 1948 to 2000 and The Simpsons. Show more
Specialist subjects include dinosaurs, Vincent Van Gogh, the life and career of Sachin Tendulkar and the Tudors.
The topics chosen by the finalists include James Bond villains, frogs, Western European geography and The Princess Diaries.