Mary From the Dairy is a comic song made famous by British comedian Max Miller, The Cheeky Chappie, in the 1930s and 1940s.
Sam Kern, the composer, said that the idea for the song came to him as he was sitting in the Express Dairies in Charing Cross Road.
He started writing the song on a cigarette packet, took it to an orchestrator Arthur Parry and rushed to the Mile End Empire where he met Miller.
He was talking to Sam Kern in the Express Dairies one day and he told him he had an idea for a song, "Mary from the Milk Bar".
[6] Miller sang the song playing the character ‘’Harry Hawkins’’ in the feature film Hoots Mon!