The pub sign "The Man With The Load Of Mischief" at 54 minutes 20 seconds was intact 14 years later and used in the September 1973 promotional video for Rod Stewart's "Oh No Not My Baby" (In colour)
A general election seemed imminent in Britain at the time the film was made, and Sidney Gilliat, the director, had every reason to expect a summer election, as this was widely predicted. He therefore timed this film for a summer release. However, the incumbent Conservatives, who had lost a great deal of credibility after the Suez Crisis of 1956, put it off until the autumn, which Gilliat said led to the film being less of a box-office hit than he'd hoped. (The Conservatives won the election with an overall majority of 49).
Last film of Gordon Harker. He was reunited for it with Alastair Sim, his co-star in the "Inspector Hornleigh" films of some twenty years earlier.
The Shakespearian epigraph to the film comes from "Romeo And Juliet".
When Left, Right and Centre went out on general release on the ABC circuit in September 1959 it was supported by the Merton Park crime drama "Wrong Number" which starred Peter Elliot, who had a small role in Left, Right and Centre.