In one scene, actor Conrad Phillips sits up in bed reading the movie tie-in paperback of Ian Fleming's "Dr. No". This James Bond film released the previous year famously featured "The Switch" co-star Zena Marshall as Miss Taro.
The end of the film Conrad Phillips character visits Zena Marshall's character in hospital. The Hospital was St Mary Abbots Hospital, in Kensington (Royal Borough of Kensington and Chelsea) and the name can be clearly seen in the brief shot of the exterior. The Hospital, like many hospitals grew out of workhouses and workhouse infirmaries, was renamed St May Abbots In the 1920's and finally became a general hospital in the 1930's. It was bombed in the Second World War. In 1940 4 people were killed and much damage caused and in 1944 it received a direct hit from a V1 (Flying Bomb) killing 5 nurses, 7 adult and 6 child patients. In 1948 it became part of the National Health Service. The hospital eventually became a dedicated to geriatric and psychiatric care finally closing in 1992. The site was redeveloped into luxury flats.
Passed by the BBFC in April 1963, it was March 1964 before The Switch went out on general release as support for X3 agent spécial (1964) on Rank release.