Continuity mistake: After all the shooting at Eddy's place, Rory and Plank shoot each other, Rory was standing up and then we hear a body slump to the floor, (just after the two shots). When we see the interior again, Rory is on the couch. Falling on the couch wouldn't have made that noise and I doubt he would have been able to pick himself up after a point blank blast with a shotgun.
Factual error: When Vinnie Jones goes to the guy having the sunbed he lifts the top of the bed up and smashes it down on the guy's face, breaking his nose and making it bleed. He does this a few times. The thing is, no sunbed's canopy will come down so low it could touch your face. Even fully closed, inside the sunbed will be enough room above your nose of at least 6-9 inches. Even if the sunbed's canopy is closed with a huge force, unless it breaks the bottom half off then there is no way the top half can touch your face. They are designed like this to prevent accidents.
Continuity mistake: The last scene, when Tom is to throw the rifles out from the bridge, before doing so, he unwraps them to take a final look. Then he wraps them again, takes them out of the car and throws. When he realizes that the rifles are lying on the other side of the rail he tries to grab them. Then we can see that they are tied together with two strings, although Tom only wrapped them.
Revealing mistake: When Dog's gang begins getting in the van after the robbery, the guy who knocked out the traffic warden is sitting in the back of the van. The actor sees the others start getting into the van, so he lifts the traffic warden's head up from the floor and just about starts his dialog. He then seems to realize that he's jumping the gun and quickly pushes the traffic wardens head back down. A few seconds later the whole gang is in the van, so the guy in the back picks the traffic warden's head back up and starts his dialog like he was supposed to.
Continuity mistake: When Dog and his gang are about to get their drugs hijacked, watch as Dog sits down and picks up the phone. He turns right around, enough to see Bacon, who doesn't move. But in the next shot, Bacon moves his shotgun to point it at Dog while Dog is still turning his head.