It’s time again for Secret Cinema. We’ve been here before, so you know the drill: a secret film to be screened at an unusual location, with the picture you’re about to watch only emerging as the opening credits roll. The organisers are currently erecting an open-air site (pictured) in London Fields, Hackney, for the event, which will be the biggest yet; there’s no word on what the flick will be, but fans take a stab at what’s on offer by ploughing through the clues on the website, or in the following (optional) dress code: ” Late 70′s. Funked out. Stripes. Tribal. Groovy hats and bandanas.” Secret Cinema at London Fields, E8, 6.30pm Sunday 6th September. Tickets cost £18.