Mendip

Bristol Exploration Club
Shepton Mallet Caving Club
Mendip Caving Group (MCG)
Axbridge Caving Group
Cheddar Caving Group
Cave Climb.com

Yorkshire

Bradford Pothole Club
Craven Pothole Club
Northern Pennine Club (NPC)
Red Rose Cave & Pothole Club

Devon

Devon Speleological Society (DSS)

Wales

Chelsea Speleological Society (CSS)
South Wales Caving Club
Westminster Speleological Group
United Cavers Exploration Team

Derbyshire

Orpheus Caving Group

Cave Rescue

West Brecon Cave Rescue Team
Devon Cave Rescue Organisation
Mendip Cave Rescue

Others

Bernie`s Cafe
Ingle Sport
Caving Supplies
BCA
Caving UK
OFD Virtual Tour
Dan Yr Ogof Showcave
Mendip Weather Station