[2] Reflecting the late end to the previous season and aiming at maximising the likelihood of fans being present in stadiums when the season starts, the 2020–21 National League began on 3 October 2020.
[4] However, owing to the cessation and voidance of the 2020–21 seasons for the North and South divisions, promotion and relegation was suspended.
However, on 26 March 2021, having not fulfilled a fixture since 30 January, Dover Athletic's results were expunged and the club deducted 12 points for the 2021–22 season.
Additionally, following the National League North and South divisions being declared null and void on 18 February, no teams were relegated this season.
However, the knock-on effect of Macclesfield Town's closure might have caused the number of relegated teams to be reduced even further.
Following Bury's expulsion from the English Football League in 2019, and the completion of the 2019–20 National League with two northern and one southern teams in the relegation zone, the division was left one team short.