I'm not sure it is from a film. It's certainly from none that i recognise (all his well known films) and it sounds quite modern at times.
I would have said that it sounds like something specially written for the BFI and their trailer. If you listen carefully to the music it seems to mimick a few different films and themes and even has the striking violins at the right cue with a scene from Psycho.
Smile you sonofabitch!