This is based on a real incident when a group of British Muslims who were friends, got captured by the Americans in Afghanistan shortly after the September 11 incident. They were held in Guantanamo Bay in Cuba for two years where they were interrogated.
Interesting "mockumentary" style where the group of friends recounted what happened with interspersed documentary footages! The first part of the film looked like a tour programme about the adventures in Pakistan and Afghanistan. The second part describes their captive lives where they were not allowed to talk to each other and was physically and mentally strained! Liked the flashback scenes that contrasted their "before and after" lives.
Internet Movie Database Link