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.
The film opens with a screen displaying the statement that the setting is a "Naval Base somewhere in England ...". The following scene starts with a Southdown bus heading for the North End (of Portsmouth) pulling into a bus stop. There is also a scene on the A27 with Portchester Castle in the background. Along with other scenes these all indicate that the setting is Portsmouth.
The car which Helen drives to the docks is a Wolseley 14/60 or similar.
The 'Militant Housewives League' car is a Morris Cowley, Morris Ten or Morris Twelve.