| 18 Foot Skiff, UK Class Association |
| 29er, GBR Class Association |
| 405 UK Hobie Class Association |
| 420 British International Class Association |
| 470 Class Association |
| 49er, GBR Class |
| 505, International Class Association of Great Britain |
| Albacore, National Association |
| B14, Class Association |
| British Moth, Boat Association |
| Cadet, UK National Class Association |
| Cherub, UK Class Association |
| Contender, British Association |
| Enterprise, UK Association |
| Europe, UK International Class |
| Finn, British Association |
| Fireball, UK Class Association |
| Flying 15, British Isles Association |
| Flying Dutchman, UK Class Organisation |
| GP14 Ireland Class Association |
| GP14 UK Class Association |
| Graduate Dinghy Association |
| Heron Dinghy Class Association |
| International 12 Ft Dinghy, Class Association |
| International 14 Class Association |
| International Moth, UK Class Association |
| Javelin, UK Class Association |
| Lark Class Owners’ Association |
| Laser SB3 Class Association |
| Laser, International Class Association |
| Laser, UK Association |
| Leader Class Owners’ Association |
| Merlin Rocket Owners’ Association |
| Miracle Association |
| Mirror UK Association |
| Mirror, International Class Association of Ireland |
| Musto Skiff, International Class Association |
| National 12 Class Association |
| Norfolk Punt Club |
| OK UK International Class Association |
| Optimist, International Class Association |
| Osprey Class Association |
| Phantom Class Association |
| Scorpion, National Class Association |
| Shrimper Owners’ Association |
| Signet Class Owners’ Association |
| Snipe GB International |
| Solo, National Class Association |
| Splash, UK Class |
| Tempest, UK Association |
| Thames A Rater, Thames Sailing Club |
| Topper, GB Class Association |
| UK 12 foot skiff, Official Class Association |
| Vortex Class |
| Wanderer, Class Owners’ Association |
| Wayfarer Class Association |
| Wineglass Dinghy Owners’ Assocation |
