Subjects are Joni Mitchell, sitcom Bleak Expectations, Alan Turing, and aviation to 1914.

The subjects for the grand final include Thunderbirds and English test cricket since 1970.

Subjects are Reading FC, Benjamin Britten, Venice, the history of Ulster and Prohibition.

The subjects include British summer Olympic champions and William Marshal.

The subjects include Ever Decreasing Circles and the life and works of Sylvia Plath.

The subjects in this semi-final include Men Behaving Badly and Inspector Barnaby novels.

The subjects in this semi-final include the X-Men comics and Eamon de Valera.

The subjects in the first semi-final include the life and career of Brian Clough.

The subjects include A Bit of Fry and Laurie, Jock Stein and Stax Records.

The subjects include the Apollo missions and the Great Train Robbery.

The subjects are Gavin and Stacey, Sir John Gielgud, Jackie Robinson and William Morris.

The subjects include Scottish pop music from 1980-1999 and Aston Villa FC.

The subjects are Pearl Jam, Watergate, Middlesbrough FC and AE Housman.

The subjects are The West Wing, Jesse Owens, Manfred von Richthofen and Billy Bragg.

The subjects include Barbara Castle, Archbishop Makarios and Joe Meek.

The subjects are World War II in Europe, Josephine Butler, Freemasonry and Pete Seeger.

Subjects include The IT Crowd, Homer's Iliad and the history of Hong Kong from 1841-1997.

Subjects include Vincent van Gogh, Burnley FC and the Tom Kirk novels by James Twining.

Subjects include the films of Martin Scorsese, Donald Campbell and Pop Larkin.

Subjects include the the Song of Ice and Fire novels and the FA Cup in the 1970s.

Subjects include the history of Las Vegas and Paul Simon.

Subjects include Kathleen Ferrier, Everton FC and the Albigensian Crusade.

Subjects include the films of Kevin Smith and the novels of Neil Gaiman.

Subjects include silent cinema, the band Hawkwind, the Ballets Russes and King Henry V.

Subjects include Catherine of Aragon, post-war Labour, Rush and Robert Fergusson.