[1] 114 teams competed across the three divisions of the league, which form the second, third and fourth tiers of the British basketball league system, an increase of 8 teams on the 2022–23 season.
The following teams have changed division since the 2022–23 season: Promoted from Division 2 Relegated to Division 2 Withdrew from league Quarter-finals Semi-finals Final Quarter-finals Semi-finals Final Basketball England announced proposed structure changes prior to the start of the 2023–24 season.
Division 3 would be limited to forty teams from the 2024/25 season, with all Division 3 teams competing in 2023/24 for a spot in the 2024/25 structure.
The remaining teams will form a new Conference League sitting under Division 3, with promotion and relegation taking place between the new Division 3 and Conference leagues via promotion playoffs.
[4] First Round Quarter-finals Semi-finals Final