Ask a Policeman

Ask a Policeman is a 1939 British comedy film directed by Marcel Varnel which stars Will Hay, Moore Marriott and Graham Moffatt. The title comes from the popular music hall song Ask a Policeman. The Turnbotham Round police force are threatened with dismissal by their Chief Constable and decide to manufacture some smugglers to keep their jobs. When they encounter real smugglers, their plans begins to fall apart.

They also leave a keg of whisky unattended in order to frame someone as a smuggler and then accidentally discover a real smuggling ringSergeant Dudfoot talking about his life as a policeman at Turnbotham Round during a radio broadcast. His staff Albert and Harbottle played by Graham Moffatt and Moore Marriott enter with Harbottle after theyve been poaching and Harbottle ruins the broadcast. ........

Source: Wikipedia