Whilst it claims to be a dockyard town on the South Coast, the opening scene containing a Southdown bus going to North End is in Portsmouth. Also the scene on the A27 with Portchester castle in the background

Martha Dacre quotes from "Life a duty" by Ellen Sturgis Hooper (February 17, 1812 - November 3, 1848): "I slept, and dreamed that life was Beauty; / I woke, and found that life was Duty."

During the blackout as the air raid sirens are sounding, the lights of Portsmouth can be seen clearly in the background.