Swindon Town won their second Southern League championship, whilst Coventry City and Merthyr Town were relegated to Division Two.
Croydon Common won the Division Two championship on goal difference and were promoted to Division One along with runners-up Luton Town.
Division Two club Stoke applied to join the Football League, but finished third in the ballot and were rejected.
Several Welsh clubs in Division Two left the League at the end of the season, though many returned after World War I.
A total of 20 teams contest the division, including 18 sides from previous season and two new teams.