The league is organised into three sections reflecting the disciplines played:
- Ladies Level Doubles (Fours)
- Mens Level Doubles (Sixes)
- Mixed Doubles (Sixes)
Each section is split into a number of divisions according to the number of teams entered, with promotions and demotions between divisions at the end of each season. Each team in a division plays all the other teams in the same division, once at home and once away, during a season. A player can only represent one club in each section, but can play for different clubs in different sections.
- For each Sixes match, a team provides three pairs, and each pair plays one rubber against each of the opposing pairs (i.e. nine rubbers). A rubber consists of the best of three games to 21 (with setting) and the total number of rubbers won in each match determines the ranking within the division.
- For each Fours match, a team provides four players, each of whom plays two games with all the other members of the team in turn against their opposite numbers. Games are played to 21 (with no setting) and the number of matches won determines the ranking within the division.
The match season runs from September to May, and any matches not completed in this time are forfeited.