Factual error: When Barry swallows the car key on the way to the airport, he holds and swallows a Ford car key, yet they are driving a Citroen Xsara. (00:08:18)
Continuity mistake: When the movie starts with the guys filming a video, the position of the rifle in the guy's hands is inconsistent in every single angle.
Factual error: When the main characters are confronted by the police in London in their 'fun-run' costumes, when they make a run from the police on a metal walkway that leads under a bridge, it is the Five Weirs Walk in Sheffield, not London.
Factual error: The 'Kebabish' shop, where Waj takes hostages and then blows up in, is supposed to be in London but is in fact in an area of Sheffield called The Wicker.
Factual error: When the main characters are stanging outside the van in London putting on their costumes, it is in fact Sheffield because they are parked next to the railway bridge in an area called The Wicker.