Blackmail is a 1929 British thriller directed by Alfred Hitchcock and starring Anny Ondra, John Longden, and Cyril Ritchard. Based on the 1928 play of the same name by Charles Bennett, the film is about a London woman who is blackmailed after killing a man who tries to rape her.

The British Museum Reading Room, situated in the centre of the Great Court of the British Museum, used to be the main reading room of the British Library. In 1997, this function moved to the new British Library building at St Pancras, London, but the Reading Room remains in its original form at the British Museum.