Continuity mistake: When the woman that Carter has slept with is walking up stairs while nude, the position of the robe she carries changes between shots.
Continuity mistake: The Ford Cortina that Jack Carter drives in the film changes number plates. The first time we see it in the film (tailing Kinnear's Cadillac) its registration number is YBB372H. For the rest of this car's appearances in the film, the licence plate is YBB371H. The front bumper is also missing when Carter first drives to Kinnear's house, and mysteriously reappears before being ripped off in a later scene. (00:24:20)
Continuity mistake: The Land Rover that Kinnear's henchmen drive around in at the start is the same Land Rover that the police arrive in to arrest Kinnear at the end.
Continuity mistake: When Kinnear's house is raided by the police a maroon Humber Hawk is parked facing the house wall when they go in, and facing away when they drag Kinnear out.