[1] Starting this season, the league consisted of two Step 6 divisions of twenty clubs each.
[2] On 13 March 2020, on advice from the Football Association, the league announced that all South West Peninsula League matches would be suspended due to the coronavirus pandemic, initially for a period of ten days.
[3] On 16 March, the FA decided to postpone all matches across all FA Competitions until 3 April, and a league statement confirmed the postponement of all matches for the foreseeable future.
[4] On 26 March 2020, the league season was formally abandoned, with all results being expunged, and no promotion or relegation taking place to or from the two divisions.
[5] On 30 March 2020, sixty-six non-league clubs sent an open letter to the Football Association requesting that they reconsider their decision.