Corrected entry: The address for the house in this movie is 55 Ludovico place. The name of the institute in A Clockwork Orange (1971) where Alex is deprogrammed of violence was the Ludovico Institute.
Corrected entry: Frank kills Kirsty's father and wears his skin, the bone structure gives a person their features. Her father's skin would not have fit so nicely on Frank and he would not look like her father.
Correction: It's a supernatural force at work that allows the dead Frank to walk around and wear other people's skin like his own. Why shouldn't it also include a subtle rearranging of his features when necessary?
Corrected entry: When Larry and Julia move into the house, they clear out everything, even all of Frank's possessions, yet somehow Frank is able to obtain his switchblade near the end of the movie.
Correction: You never actually see them clear out absolutely everything; it is just assumed that they do. It would be reasonable if one or both of them chose to hang onto personal effects that had belonged to Frank, as they did not know if he would someday come back to claim them.
Corrected entry: The pet shop Kirsty works in has a marmoset in a cage; British pet shops don't sell such animals, it's illegal.
Correction: Illegal, yes. But it happens. See http://www.monkeyworld.co.uk/topic.php?TopicID=163&Template=standard, amongst others.
Corrected entry: Despite being set in England, all telephones give the US style "single ring" rather than the UK's "double ring".
Correction: The ring depends on the telephone, not the network or location.
Correction: This is only trivia if there is a reason for the address; otherwise it only qualifies as coincidence.