| League | British League |
|---|---|
| No. of competitors | 18 |
| Champions | Reading Racers |
| Knockout Cup | Belle Vue Aces |
| Individual | Ivan Mauger |
| London Cup | Hackney Hawks |
| Midland Cup | Wolverhampton Wolves |
| Highest average | Anders Michanek |
| Division/s below | British League (Div 2) |
The 1973 British League season was the 39th season of the top tier of motorcycle speedway in the United Kingdom and the ninth season of the British League.[1][2]