Barry Norton was originally cast in the role of the romantic juvenile, but he was deemed inappropriate for the role and was replaced by William Janney.
Although June Lang played the romantic ingenue, she never worked with Laurel and Hardy on this picture and, in fact, never met them.
Barry Norton was the original juvenile lead, but according to William Janney, who replaced him, Norton's professionalism was his undoing. Norton knew his lines and cues perfectly, but when Stan and Ollie began ad-libbing, Norton fell apart and couldn't keep up. Janney was brought in, and most of the scenes were re-written to keep Janney from falling into the same trap as Norton. Janney and "the boys" ultimately shared very few scenes.
The date on the office calendar in "Bonnie Scotland" is June 16, the same day as Stan Laurel's birthday.
The sets from The Little Minister were used for the Scottish scenes.