Revealing mistake: During the opening sequence involving Harold and the clothesline, there is a foreign object on the lens of the camera - noticeable in the bottom left corner in several shots.
Continuity mistake: When Jason is chasing Chris, Chris runs into a bedroom and onto a bed, and then grabs a chair to smash a window, and the chair flies out the window. However, when Chris falls out the window we see the chair again, however the chair is a totally different chair, as the spindles on the legs of the chair have totally changed, and the back to the chair is different. (01:14:35)
Continuity mistake: When Shelly screeches out onto the road, after the windows on the car are smashes by Ali, you can see a large 'Olympia' lorry parked perfectly straight, outside a garage. Then between shots when Shelly goes speeding towards the gang's motorbikes, the lorry is suddenly parked at an angle, now sticking right out into the road. (00:32:20)
Continuity mistake: When Rick is about to go for a drive in his car, and Chris is begging to come, we see Rick is holding just keys and that Chris's hands are empty. It cuts to the POV of Jason watching them from the stable, and Rick hasn't moved or picked anything up. It then cuts back to a closer view of them again, and now Rick has a golden coloured coat in his hand. (00:33:50)