Current season or competition: 2023–24 Regional 1 South East | |
| Sport | Rugby union |
|---|---|
| Instituted | 1987 (as London 1) |
| Number of teams | 12 |
| Country |  England |
| Holders | Colchester (1st title) (2023–24) |
| Most titles | Barnes, Basingstoke, Canterbury, Havant and Westcombe Park (2 titles) |
| Website | clubs.rfu.com |
Regional 1 South East (formerly known as London & South East Premier and National League 3 London & South East) is a level five league in the English rugby union system.[1] It is one of six leagues at this level. When this division began in 1987 it was known as London Division 1. The format of the league was changed at the beginning of the 2009–10 season following re-organisation by the Rugby Football Union while the name change from National League 3 to Premier was introduced for the 2017–18 season to make it more obvious that it is a regional league.[1] London & South East Premier was the highest regional rugby union league covering London and south east England. Following the RFU Adult Competition Review the league was decreased from 14 to 12 and the name changed to Regional 1 South East. Part of the area formerly covered by London & South East Premier is now covered by a new league Regional 1 South Central.
Colchester are the current champions.
- ^ a b "Renaming of RFU National 3 Leagues". Oxfordshire RFU. Retrieved 16 July 2017.