It runs parallel to the Premiership Rugby seasons.

Split into north and south pools, it comprises twelve sides.

Players from feeder clubs are allowed to play under dual registration for additional development benefit.

Bristol United have been included in the Shield since its inception regardless of league status.

The top two teams from each pool then enter the finals stage where they will face their intra-pool opponent in the semi-final before progressing to the final against a team from the opposite pool.