Character mistake: When Hunt was interviewing Rocket, he asked him who killed the "P*ki". At the time, the Asian man who had been shot was still alive in hospital, only to die later in that episode.
Factual error: The reflection of a blue DAF XF lorry can be seen in a window. These lorries were not made until many years later. (00:31:51)
Episode #2.3 - S2-E3
Factual error: Sam and Gene arrive at a construction site to investigate stolen explosives. There is a green first generation Range Rover parked on the site. The Range Rover has its driver side (right side) side view mirror mounted on the door. In 1973 Range Rovers had side view mirrors mounted on the front end of the front wing (fender), not the door. The mirror was not mounted to the door until after 1978. (00:08:58)
Factual error: Stopford House in Stockport is used for the exterior shots of the police station. It was constructed in 1975 and wouldn't have existed in 1973 when the show is set.
Factual error: Gay pride flags are visible in a window. The 6 color flags shown were introduced in 1979 (though an 8 color flag preceded it in 1978). (00:30:44)
Factual error: Throughout the show in many street scenes and visible on some houses are satellite dishes. These were not available in 1973, only terrestrial TV through regular aerials. The first commercial satellite service In the UK was launched in 1989 by SKY.
Continuity mistake: When Gene and Sam are having a discussion in the gents, his tie goes from being lopsided to straight, despite his hands never leaving his pockets.
Chosen answer: Sam is using the modern wording of the right-to-silence caution prescribed by legislation such as the Criminal Justice and Public Order Act 1994. In the 1970s, the wording would have been different, if it was used at all.
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