Current

• Barrow Raiders
• Blackpool Gladiators
• Blackpool Panthers
• Carlisle
• Leigh Leopards
• Oldham
• Prescot Panthers
• Rochdale Hornets
• St Helens
• Salford Red Devils
• Swinton Lions
• Warrington Wolves
• Whitehaven RLFC
• Widnes Vikings
• Wigan Warriors
• Workington Town

Former

• Askam
• Belle Vue Rangers
• Chadderton
• County Amateurs
• Coventry
• Lancashire Amateurs
• London Broncos
• Maryport
• Morecambe
• Pemberton Rovers
• Pilkington Recreation
• Runcorn
• St Helens Amateurs
• Streatham and Mitcham
• Whitehaven Amateurs