While popular in England where it was a box-office success and nominated for a BAFTA award, this movie did not sit well with Welsh audiences, who considered it too stereotypical.
The fourth Ealing comedy to be released in 1949, the others being Passaporto per Pimlico (1949), Whisky a volontà (1949) and Sangue blu (1949).
The actual station name for "Hafod uwchben ceubwll y marchog coch" was Nant y Moel Station, Ogmore Vale, South Wales. The station has long disappeared. Word for word translation of fictitious station is: "House Above the Hole in the Field of the Red Knight".
All of the music in the movie was adapted from traditional Welsh songs.