NPL Division One South East
- England
- 20 teams
Defunct · last season 2020-21
Split from NPL Division One East (2018) (2018–now), NPL Division One West (2018) (2018–now)
4 seasons
- 2020-21Champions: Leek Town
- 2019-20Champions: Leek Town
- 2018-19Champions: Atherton Collieries
- 2018-19Champions: Atherton Collieries
Sources: Wikipedia, API-Football