In 1920 the Football League admitted the clubs from the first division of the Southern League (the Southern League continued with its remaining clubs) and Grimsby Town, who had failed to be re-elected to the Second Division the season before and been replaced by Cardiff City (of the Southern League).
I 1920 optog The Football League klubberne fra Southern Leagues First Division (Southern League fortsatte med dens resterende klubber) samt Grimsby Town, som ikke var blevet genvalgt til Second Division den foregående sæson og blevet erstattet af Cardiff City (fra Southern League).