[1] After the abandonment of the previous season due to the COVID-19 pandemic,[2] the league's constitution largely remained unchanged, with the planned structural changes being put back to this season.
This season, the Premier Division champions were to be promoted to Step 4.
On 24 February 2021, after fixtures had been suspended in December 2020, the FA curtailed the season for all leagues at Steps 3–6, again due to the COVID-19 pandemic.
[4] The Premier Division remained at 20 clubs, with the same constitution as the previous season except for the absence of Solent University, who resigned from the league in June 2020.
Division One was reduced from 20 clubs to 19 after Pewsey Vale resigned during the previous season.