The plane with registration G-AKEL seen near the start of the film is a Miles M.65 Gemini 1A.
Priscilla Ogier's debut.
Valerie Shevaloff's debut.
The radio newsreader is Alvar Liddell who was a real life BBC newsreader. He was one of the most famous voices of World War 2 and he made some historic announcements. Clips of his broadcasts are used in many WW2 films and documentaries.