The winner over two legs would play in the higher league the next season, meaning greater potential movement throughout the divisions.

Starting in season 1973–74, the Scottish Rugby Union organised the full member clubs into six leagues.

Since the advent of the leagues, the Scottish Rugby Union and its member clubs have re-organised the competition several times, usually to change the number of teams.

The Caledonia Region covers the whole North of Scotland from Fife and Stirling, all the way to Orkney and Eilean Siar.

In League One, with the exception of Carrick the teams remained the same as the 2019-20 season, due to the covid 19 pandemic.