| League | National League Division One |
|---|---|
| No. of competitors | 9 |
| Champions | Wembley Lions |
| National Trophy | Wimbledon Dons |
| London Cup | Wembley Lions |
| Highest average | Graham Warren |
| Division/s below | National League (Div 2) National League (Div 3) |
The 1950 National League Division One was the 16th season of speedway in the United Kingdom and the fifth post-war season of the highest tier of motorcycle speedway in Great Britain.[1]