Episode 21—2022/23

21/31 Subjects are U2, toy dog breeds, the Mitford sisters and guest stars in Friends.

Episode 20—2022/23

20/31 Subjects include the Great Fire of London and The Lord of the Rings by JRR Tolkien.

19/31 Subjects include the films of Nicole Kidman and the children's books of Roald Dahl.

18/31 The subjects are Catherine the Great, Wallace and Gromit, Egon Schiele and hyenas.

17/31 Subjects include Marcus Trescothick, Thomas Cromwell and the films of Wes Anderson.

16/31 Subjects include Stephen Hawking and the music of Radiohead.

15/31 Subjects include the British Industrial Revolution and the films of Christopher Guest.

14/31 Subjects include Christina Aguilera and the US space shuttle program.

13/31 Subjects include William Morris, Georges Remi and Tintin, and Torchwood.

12/31 The specialist subjects include the films of Judy Garland, The Cure and Hi-de-Hi!