Regional 1 South Central is a level five league in the English rugby union system, with the twelve teams drawn from across southern and South East England. The other level five leagues are Regional 1 Midlands, Regional 1 North West, Regional 1 North East, Regional 1 South East and Regional 1 South West.
Prior to 2022, Regional 1 South Central and Regional 1 South East were part of a unified level five league known as London & South East Premier.
London Welsh are the champions and are promoted to National League 2 East
The twelve teams in this league are drawn from across southern England, with the league champions promoted to National 2 East. The league's bottom two teams are relegated to either Regional 2 Thames or Regional 2 South Central depending on their geographic location. The season runs from September to April and comprises twenty-two rounds of matches, with each club playing each of its rivals home and away. The results of the matches contribute points to the league table as follows:
Departing were London Welsh, promoted to National 2 East while Brighton (11th) and Horsham (12th) were relegated to Regional 2 South East.
Departing were Havant, promoted as champions replaced by Wimbledon who were relegated from National League 2 East. Also departing are Bournemouth who were relegated to Regional 2 South Central. Marlborough transferred across to Regional 1 South West. Ordinarily Horsham would have dropped to Regional 2 South East but due to obtaining the highest amount of points across those finishing in a relegation place (11th) they earned a reprieve as the demise of Jersey Reds meant there was a corresponding adjustment across multiple leagues.
Joining the league are Jersey and Old Alleynians who were promoted as champions of Regional 2 South Central and Regional 2 South East respectively.
Departing were champions Wimbledon, promoted to National League 2 East, while two teams were relegated - RWB (11th) and Sutton & Epsom (12th) to Regional 2 South Central and Regional 2 South East respectively. Also departing on a level transfer to Regional 1 Midlands were Banbury and Oxford Harlequins.
Three teams were promoted - Hammersmith & Fulham, Horsham and Marlborough from Regional 2 Thames, Regional 2 South East and Regional 2 South Central respectively. CS Rugby 1863 and Tunbridge Wells are both transferred from Regional 1 South East. The remaining seven teams played in this league last season.
This was the first season following the RFU Adult Competition Review. The new league was made up of teams from both the London & SE and South West divisions.