Pop-Up Screens aim to bring brilliant films to cool locations. For this one, head to Greenwich Peninsula for a lot of lovely food, amazing popcorn and a fully stocked bar. If you’d prefer to bring your own picnic that’s ok, but it must be noted you will be missing out on burgers from the guy that supplies Harrods. This time around it’s Back To The Future. When Marty McFly (Michael J Fox) finds himself trapped back in 1955 after him and his old, nutty professor friend Doc Emmett Brown (Christopher Lloyd) have a dangerous run in with a time machine and some Libyans, he's no idea what to do. After screwing with his own timeline by almost kissing his teenage mum, Marty has to find the Doc and convince to help him sort his mess out and get…back to the future. Certificate PG. Runtime: 1 hour 42 minutes. Bring stuff to keep you warm/dry in the British weather and something to sit on. Please do not bring a tent. Doors open 1 hour 30 minutes before the start time. The film starts when it gets dark.