Factual error: When the factory comes to a stand still during the strike the cars on the production line are Ford Cortina mark 1s, which went out of production in 1966, two years before this film is set.
Factual error: Desmond Decker's record "the Israelite's" is heard on the radio. This record was issued in 1969, the year after this film is set.
Factual error: A triumph Toledo is parked outside the hotel - these cars did not start production until 1970, two years after this film is set.
Continuity mistake: When Rita and their friends come out in front of the press after the meeting with the Secretary of State, Lady Castle joins them. First they are seen in front with Lady Castle standing between Rita and Connie. Next cut they are seen from the back and Lady Castle stands between Connie and Brenda, once removed from Rita. Another cut, front again and everything back to normal.
Barbara Castle: I am what is known as a fiery redhead. Now, I hate to make this a matter of appearance and go all womanly on you, but there you have it. And me standing up like this is in fact just that redheaded fieriness leaping to the fore. Credence? I will give credence to their cause. My god! Their cause already has credence. It is equal pay. Equal pay is common justice, and if you two weren't such a pair of egotistical, chauvinistic, bigoted dunderheads, you would realise that. Oh, my office is run by incompetents and I am sick of being patronised, spoken down to, and generally treated as if I was the May Queen. Set up the meeting!