Filming originally started in April 1938, as "Asking For Trouble", a musical directed by Sonnie Hale, and starring Jessie Matthews, Kent Taylor, and Noel Madison, but was abandoned.
Kathleen Byron is thought to be the model, shown in close-up, glaring at Alastair Sim's character following the giant wind fan incident, and although she does resemble Byron, it doesn't seem to have ever been confirmed to have been her. Considering Byron was seventeen at the time and did not leave drama school until the early 1940s (in at least one interview, she discussed The Young Mr. Pitt (1942), also directed by Carol Reed, as being the first movie on which she worked) it seems unlikely that it is her.
Terry-Thomas can be heard in this movie. Made during his days as an extra, he imitated the "moo" of a cow.
Debut of actress Kathleen Byron .