The producers of the second 'Lord Peter Wimsey' series, starring Edward Petherbridge as Lord Peter Wimsey, wanted to film a version of this story, but because the rights had been sold to Hollywood years before, they were unable to do so; Petherbridge did act in a version of "Busman's Honeymoon," but it was for the stage and not television or the movies.
Richard Thorpe was the original director starting 4 August 1939, traveling to various locations in England. World War II started in early September, and the film was shelved until March 1940 with Arthur B. Woods as director.
This film was first telecast in Los Angeles Tuesday 19 February 1957 on KTTV (Channel 11), followed by Philadelphia Thursday 14 March 1957 on WFIL (Channel 6), and by New York City Friday 12 April 1957 on WCBS (Channel 2); it was first aired in San Francisco 6 January 1958 on KGO (Channel 7).
This movie was "based on a 1936 play co-authored by Sayers [Dorothy L. Sayers] that she later reworked into the novel 'Busman's Honeymoon'," according to the film's Warner Archive Collection DVD sleeve notes.
The later same title Haunted Honeymoon (1986) is not a remake of this 1940 film of the same name "Haunted Honeymoon" (aka "Busman's Honeymoon"). The two pictures were made and first released around forty-six years apart.