Monty mentions that he'd like to be the girl from 'X-Men' who can walk through walls. Both Anna Paquin and Brian Cox have appeared in at least one 'X-Men' movie, though neither as Kitty Pryde (the girl who can walk through walls).

In the scene where the DEA is searching the flat there is a cordless telephone from Bang & Olufsen (Beocom 6000), with the phone placed incorrectly on the base. The phone is located next to the stereo. The phone is placed with the keypad facing the camera and not away from it as it is supposed to. This is also indicated by the LED on the base which is red, indicating that the phone is not charging, the LED would have been green if the phone were placed correctly.

While filming a fight scene, Barry Pepper accidentally broke Edward Norton's nose.