| League | National League Division One |
|---|---|
| No. of competitors | 9 |
| Champions | Wembley Lions |
| National Trophy | Wimbledon Dons |
| London Cup | Wembley Lions |
| Highest average | Aub Lawson |
| Division/s below | National League (Div 2) National League (Div 3) |
The 1951 National League Division One was the 17th season of speedway in the United Kingdom and the sixth post-war season of the highest tier of motorcycle speedway in Great Britain. [1]