In the gun fight outside the private bank, the rear window of the Volvo that Jack Regan is crouching behind keeps reverting back to intact glass between shots, repeatedly shattering in the same place after being fired at.
During the car chase through the caravan park, Carter can be seen leaning out of the passenger side window to shoot at the other car. In the next shot, the window has (very quickly) been rolled back up and Carter is sitting back in the seat.
Just before attending the armed robbery at QTZ, a watch shows it is 10am. After the chase Regan's phone displays the time as 16:15. Also, the large white Samsung with no signal clearly differs from the black phone he was using in the car when being told to stand down.
During an arrest scene one of the characters says to the suspect: "You have the right to remain silent..." This is part of the Miranda used by United States law enforcement and would not be used in the UK. In Britain the caution that must be given at the time of an arrest begins with, "You do not have to say anything but it may harm your defense if you do not mention when questioned something that you later rely on in court..."
When George aims to take a shot at the fleeing bank robber on the bicycle and fires, a click sounds to indicate he is out of rounds. If the pistol was out of rounds then the slide would be locked in the rear position, which it is not.