Teams
Current
- Castleford Tigers
- Catalans Dragons
- Huddersfield Giants
- Hull FC
- Hull Kingston Rovers
- Leeds Rhinos
- Leigh Leopards
- St Helens
- Salford Red Devils
- Wakefield Trinity
- Warrington Wolves
- Wigan Warriors
Former
- Barrow Raiders
- Batley Bulldogs
- Belle Vue Rangers
- Bradford Bulls
- Bramley
- Brighouse Rangers
- Carlisle
- Castleford
- Crusaders RL
- Dewsbury Rams
- Doncaster RLFC
- Featherstone Rovers
- Halifax Panthers
- Heckmondwike
- Holbeck
- Hunslet RLFC
- Keighley Cougars
- Leeds Parish Church
- Liversedge
- London Broncos
- Manningham
- Morecambe
- Newcastle Thunder
- Oldham
- Paris St Germain
- Pilkington Recreation
- Prescot Panthers
- Rochdale Hornets
- Runcorn
- Sheffield Eagles
- Stockport
- Swinton Lions
- Toulouse Olympique
- Tyldesley
- Whitehaven RLFC
- Widnes Vikings
- Workington Town
- York Knights