The film uses actual from three games. The fictional FA Cup 5th round game shown Bostock v Chelsea is actually footage of Brentford v Grimsby Town from Mar 25th 1972. The fictional FA Cup semi-final Bostock v Leicester City played at Bramall lane Sheffield is actually footage of Sheffield United v Leicester City Apr 26th 1975. The fictional Cup Final Bostock v Leeds United is actually footage of the 1973 FA Cup Final Sunderland v Leeds United.
The scene where new Bostock Manager Bertie Mason is introduced to his new players is a direct spoof of the 1980 Granada TV Documentary "City" when John Bond is shown meeting with his players for the first time.
Leicester City actually did reach the FA Cup Semi-final in 1974, but they lost to Liverpool 3-1 in a replay after a 0-0 draw in the first game.
Only a passing mention is made of the first two games of the FA Cup run, but they are not mentioned by name.