Something different for day 11. I'm taking you back in time, courtesy of the sterling work done by the BFI.

Passions run deeper than the Northern Line in Anthony Asquith's tale of love, jealousy, treachery and murder on the London Underground. Eighty years later, your average tube ride might not be quite as eventful, but anyone who has exploited the city's public transport system to romantic advantage will find much to recognise.