Continuity mistake: In Episode 9 of Season 1, Roy Galloway sells his Ford Cortina to a car dealer. He has to wait a day for paperwork and drives away in a Vauxhall Cavalier A242 GLO. He revisits the car dealer, and his Cortina is up for sale on the forecourt for £1495, then drives away in the Cavalier. However, in the next episode, he is back to driving the same Ford Cortina. Again, you don't see the registration, but in Episode 11, it's visible: BBH 469T, the same as in the pilot episode. (00:20:36 - 00:22:20)
The Bill (1984)
1 continuity mistake in season 1 - chronological order
Starring: Graham Cole, Jeff Stewart, Simon Rouse, Trudie Goodwin
Continuity mistake: Season 19, Episode 159. When Des Taviner flips and drives the area car wildly around an industrial estate and into a gas storage facility, you can see that during the sequence the Vauxhall Vectra he is driving starts off as a Y registration, then changes for several shots to a P registration, and then finally back to a Y registration when it blows up inside the building.
PC Cathy Bradford: D'you think Reg is all right?
PC Gary Best: He's not exactly Rambo is he?
Insp. Gina Gold: Reg may not be a superhero, but I know who I'd like to be with me in a tight corner and it wouldn't be you, Best, all right.