The chip shop that Gregory and Carol go to is called Capaldi's. It was owned by a member of the family of actor Peter Capaldi.
In all Clare Grogan's close-up scenes, she is filmed from one side to hide the scars on her left cheek. For the longer shots of her face (eg the dancing-lying-down scene), her cheek was filled with mortician's wax to hide the scar. Several months before filming, the actress received terrible injuries when a broken glass was thrust into her face as she was fleeing a brawl in a Glasgow bar.
Dubbed with milder Scottish accents for the original American release.
The headmaster (Chic Murray) is interrupted as he is playing whimsical tunes on the school piano during the lunch break and responds "Off you go, you small boys". This scene was included after director Bill Forsyth heard Murray playing a piano in the school gym to entertain the rest of the cast between filming his scenes. The piece that he plays in the film is his own composition, entitled "Chic's Tune". When his agent discovered this, he insisted that Murray be paid a fee for its use.