Originally, the above film wasn't going to be Will Hay's last. A few years later, he planned another comedy with director Marcel Varnel. Unfortunately, due to the director being killed in a car crash and Will Hay suffering ill health, the project was canceled.
The climatic scene on the face of Big Ben, was used for the 1978 version of "The Thirty Nine Steps."
The reference in the trial scene to workhouses is a reminder that they still existed in England at the time, though since 1930 they were officially called Public Assistance Institutions until their final abolition in 1948.