| Competition | British League |
| Season | 1975 |
| No. of competitors | 18 |
| Champion | Ipswich Witches |
The 1975 British Speedway League was the eleventh season of the highest tier of motorcycle speedway in Great Britain. Reading Racers returned after a one season absence to increase the size of the league back to eighteen teams. The Ipswich Witches won their first title.
| Team | PL | W | D | L | Pts |
| Ipswich Witches | 34 | 26 | 1 | 7 | 53 |
| Belle Vue Aces | 34 | 25 | 2 | 7 | 52 |
| Newport Wasps | 34 | 24 | 1 | 9 | 49 |
| Exeter Falcons | 34 | 20 | 3 | 11 | 45 |
| Sheffield Tigers | 34 | 21 | 0 | 13 | 42 |
| Reading Racers | 34 | 21 | 0 | 13 | 42 |
| Leicester Lions | 34 | 16 | 4 | 14 | 46 |
| Oxford Rebels | 34 | 18 | 0 | 16 | 34 |
| Wimbledon Dons | 34 | 16 | 2 | 16 | 34 |
| Halifax Dukes | 34 | 15 | 3 | 16 | 33 |
| Cradley United | 34 | 15 | 2 | 17 | 32 |
| King's Lynn Stars | 34 | 14 | 3 | 17 | 31 |
| Wolverhampton Wolves | 34 | 13 | 1 | 20 | 27 |
| Hull Vikings | 34 | 10 | 4 | 20 | 24 |
| Poole Pirates | 34 | 10 | 3 | 21 | 23 |
| Coventry Bees | 34 | 9 | 2 | 23 | 20 |
| Hackney Hawks | 34 | 8 | 3 | 23 | 19 |
| Swindon Robins | 34 | 8 | 0 | 26 | 16 |
M = Matches; W = Wins; D = Draws; L = Losses; Pts = Total Points
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