Factual error: In the 1953 scene the Morris Oxford parked in a driveway is a 1957 model.
Factual error: In the 1953 sequence the schoolboys in the changing room all have mullet hairstyles that were current when this film was made in 1978, but not for the setting.
Factual error: In the 1953 sequence when the headmaster is driving Fiona and Paul home, the yellow car parked in the road is a Vauxhall Viva HC, which didn't start production until 1970.
Factual error: In the sequence set in 1740 during the battle a modern wooden park bench can be seen outside the castle. (00:44:30)
Factual error: In the dark ages sequence during the trial of the witches a row of electricity pylons can be seen in the distance.
