Following on from the last five Surprise Films, Phyllida Lloyd’s Herself, Paul Briganti’s dark comedy Greener Grass, Bart Layton’s crime flick American Animals and Halina Reijn's comic horror Bodies Bodies Bodies Sundance Film Festival: London will again feature an unannounced screening. Details will only be revealed as the opening credits roll. With just one screening, this will be one of the festival’s hottest tickets. Latecomers may not be admitted