The plot device of the Italian Prince Bruno and his possible marriage to an American starlet echoes the wedding of Prince Rainier of Monaco and Grace Kelly the previous year.
When Bassett goes to hire the buses from Carlton-Ricketts, he offers a £20 deposit. Carlton-Ricketts asks for a "pony" instead. A "pony" is English slang for £25.
The entrance hall of the school has a Roll Of Honour board dedicated to a dozen or so former pupils who "Rendered invaluable Service to our American allies 1942-45" with their married names and current US state, and their maiden names below.
Flash Harry's bubble car is a Heinkel Kabine.
"Scuola La Lupa", the name of the Italian school, can be translated as the School of the She-Wolves.