The National League South consisted of 21 teams after the 2019–20 season and did so for the final time.
Team changes Following the COVID-19 pandemic-related cancellation of the four Step 3 leagues' 2020–21 seasons, no teams were promoted to or relegated from the National League South. ;
To National League South Relegated from
2020–21 National League • None ;
From National League South Promoted to
2021–22 National League • None
Stadia and locations Managerial changes National League South table Results table Play-offs Quarter-finals Semi-finals Final Top scorers Hat-tricks ;Notes 4 Player scored 4 goals
Monthly awards Each month the Vanarama National League announces their official Player of the Month and Manager of the Month. == References ==