| League | British League |
|---|---|
| No. of competitors | 18 |
| Champions | Ipswich Witches |
| Knockout Cup | Belle Vue Aces |
| Individual | Peter Collins |
| Midland Cup | Oxford Rebels |
| London Cup | Wimbledon Dons |
| Highest average | Ivan Mauger |
| Division/s below | 1975 National League |
The 1975 Gulf Oil British League season was the 41st season of the top tier of motorcycle speedway in the United Kingdom and the 11th season known as the British League.[1]