English rugby union system

Rugby union in England is organised as a multi-tier league pyramid linking fully professional national divisions to regional community competitions, with promotion and relegation connecting most levels. Since 2022–23, the RFU has operated a revised competition framework across the community game, and from 2023–24 promotion and relegation at the top has been conducted via a two-legged play-off between the Premiership’s bottom club and the RFU Championship winners, subject to minimum standards criteria.

Source: Wikipedia — English rugby union system (CC BY-SA 4.0)