Continuity mistake: When Cole and the halfbreed duel with knives, the fabric they hold in their mouths as a tether keeps flipping over, meaning the end of the cloth hangs out the left side of the mouth, then the right, and left again - several times for both actors - even tho the fight is continuous and they make no moves that would change this.
Continuity mistake: When John is pushing his car through the snow (with his wife and daughter) you can see the snow on the road is thick and solid. When John enters the phone box the snow suddenly becomes very slushy and muddy. (00:01:30)
Continuity mistake: In the very last scene, Hoskins opens the back left hand passenger door. He gets in, and is seated right on the edge of the seat (as far left as he can go) when the car takes off, and Brosnan pops up and aims a gun at Hoskins. Hoskins does not move. However, from the camera angle, Brosnan is pointing a gun at the middle of the row of seats, whereas Hoskins is sitting on the far left.
Continuity mistake: When Blackthorne tries to open the door in order to leave the room he woke up in, his hand tears the paper wall. The damage to the paper then changes between shots. (00:11:20)