The football match from which the main action sequences were taken was between Arsenal and Brentford, and took place on Saturday 6th May 1939 with The Bees playing in a a special striped kit to simulate The Trojans (closer shots feature the Oxford and Cambridge Blues as the Trojans).
The Gunners/Trojans replay kicks off at 3pm on Wednesday 26th April (dating the film to 1939), with the original match therefore presumably being held on Saturday 22nd April.
A sequel, "The Denham Studio Mystery", was mooted by Thorold Dickinson but never made. It was planned that it would incorporate footage shot by Josef von Sternberg for his aborted film "I, Claudius (1937)."
The film uses film footage from a First Division fixture between the teams Arsenal and Brentford, which took place on 6 May 1939. This was the last match of the 1938-1939 season. It was also Arsenal's last official league fixture to take place before the outbreak of World War II in September 1939.
The film provoked a spin-off novel by Leonard Gribble, which was republished in 2018 by the British Library.