At around the 11-12 minute mark, Ian Huntley is seen driving down a dark country road and into a field whilst in the red Vauxhall Nova (G443 SAV) from Gangs of London S1 E1. After a brief cutaway to Huntley sat inside the car, the next shot reverts to an exterior of him sat inside the red Ford Fiesta (J112 YR5G) used in earlier scenes.
In the dark, a G reg Vauxhall becomes a J reg Ford in successive scenes.