U.F.O. is a 2012 British science fiction film about an alien invasion, is written and directed by independent British film maker Dominic Burns (known for How to Stop Being a Loser and Airborne). It is already the third feature film for which he is responsible. However, it marks his debut as writer-director.
The film is about five friends who wake up one morning to find that there is no power, cell phones or radio. The group wanders in the darkness for two days when they see a city-sized UFO above the city. Soon civilization starts to break down and the five friends find themselves in the middle of lawless anarchy.