During the summer Film 4 house a series of outdoor cinema screenings in the amazing setting of Somerset House. They'll be classic films and new releases throughout August usually. Bring snacks, sleeping bags, cushions cos you'll be sitting on the stone floor, but it's a great a night out. I've watched Hot Fuzz, Point Break, Shaun of the Dead, Raiders of the Lost Ark and Silence of the Lambs there.
Somerset House, Strand, London WC2R 0RN, UK