The Guernsey number plates shown on a car are incorrect. There should be no spacing between any of the digits, and the front plate should be silver numbers on a black background.
Although the film is set in July 2005, it was clearly filmed during the autumn/winter months, as evidenced by the characters' clothing and overcast skies.
Although the film is set in July 2005, one of the police cars has a number plate not issued until late 2007.
The film is set in July 2005, however an advertisement for the ps3 video game "Haze" (released in May 2008) can be seen on a bus.