Towards the end of the episode, Norman gets on a number 39 bus and sits upstairs. Later, he is in the same seat, but the bus has turned into a number 23.
The returning office shown reading out Jeremy Thorpe's result at the 1979 General Election is shown as female but in reality it was a male. The candidates are shown on a stage, side by side, when in reality they where bunched around the returning officer. Also, Auberon Waugh for the "Dog Lovers" party is shown on the stage, but in reality he was not present at the count.
The light effects in the discotheque Norman visits the night before he takes the witness stand wouldn't have existed in those days.
Norman Scott is seen sitting on the top deck of a number 23 bus passing what is intended to be Jeremy Thorpe's real residence, a flat at Orme Court on Bayswater Road, London W2. The 23 bus route was introduced in 1992, some 13 years after the Jeremy Thorpe trial was conducted. In 1979 the only double-decker London Transport bus routes passing Thorpe's flat were the number 12 and the number 88. The number 23 was introduced as a variant of the number 15 route and passed through Bayswater from Shepherds Bush to East Ham along Westbourne Grove, to the north.