During filming, the engine sounds for Andrew Powell's character Roach's bike were accidentally wiped. As a result they were subsequently re-recorded on a completely different motorcycle to that actually ridden by Powell in the film.
Hold up. Where you taking him?
Ambulance: To the hospital morgue.
Cleaver: Where's 'is head?
Ambulance: Take your pick, they're over there.
When Kim (Amanda Noar) brings the cups of tea out to the workshop after Noddy and Buzzer unload the bike from the van, she calls Noddy "Neil" by mistake - Neil Morrissey being the actor's name. He was also Amanda Noar's husband at the time.