Factual error: In episode three, there is a building in the background somewhere with the letters "PALACE" on the side, this is a hotel. However in 1973 the very same building was called the Refuge not the Palace.
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Continual references are made to The Wizard of Oz. In episode 1 of season 1, Tyler leaves the station with the intention of walking back to reality. He says to Cartwright that he is going to 'follow the yellow brick road'. In episode two, after the principal drama has resolved Tyler suggests to Hunt that his 'guv' transfer him back to the division he came from. Hunt obliges by picking up his phone and saying that the Wizard of Oz will sort it out 'because of the wonderful things he does'. Throughout the series Hunt insultingly refers to Tyler as 'Dorothy'. And in the final episode, the song 'Over The Rainbow' can be heard in the soundtrack. See more...
Episode 3 (season 1, episode 3)
Factual error: Dialogue in the episode states that the date was 16 March 1973. However, in the first scene, the song that is played on the soundtrack is "Ballroom Blitz" by The Sweet, which was not released until August 1973.
Factual error: Sam conducted the taped interview, stating that it was 'Wednesday 16th March'. In 1973, 16 March was a Friday, not a Wednesday. However, 16 March was a Wednesday in 2005, the year the episode was written.
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