1931 Speedway Southern League

[2][3][4] Both Birmingham teams based at Perry Barr and Hall Green had left the league but the latter did ride in the National Trophy.

[5][6] Harringay Canaries resigned in June to be replaced by a Belle Vue team,[7][8] who then rode both in the Northern and Southern Leagues, the latter as Manchester.

[9] The Wembley Lions won their second consecutive title[10] finishing three points clear of 1929 champions Stamford Bridge.

[11] Another rider Noel Johnson of Plymouth had been killed in a challenge match against Coventry reserves on 25 August.

First round Semi final round First leg Second leg Crystal Palace won on aggregate 114–76 Crystal Palace Harringay (withdrew) High Beech Lea Bridge Leicester/Coventry Manchester (Belle Vue) Nottingham Southampton Stamford Bridge Wembley West Ham Wimbledon