General

• www.ogof.org.uk - South Wales caves
• Caves of North Wales
• Ogof Ffynnon Ddu virtual tour
• UK Caving wiki
• British Cave Research Association
• British Caving Association
• British Cave Rescue Council
• Council of Northern Caving Clubs
• The UK's currently known Entrances to Hell

Discussion boards

• UK Caving
• Aditnow - uk mines resource
• Mine Explorer - uk mines resource
• Dark Places

MAPS

• http://maps.nls.uk/geo/find/ - OS Six-inch England and Wales, 1842-1952
• http://bgs.ac.uk/data/maps/home.html - British Geological Survey maps

Publications/Bookshops

• Descent
• Cave Radio & Electronics Group
• Speleology Magazine (formerly BCRA's Caves & Caving)
• Moore Books
• siop lyfrau'r hen bost - big selection of North Wales mining books (Blaenau Ffestiniog)
• British Caving Library - cross referenced index of books, journals and maps.  Some dating back 100 years

Photography

• H2O photography – CCC member and professional photographer Annette Price
• UK Caving pool on Flickr
• Brendan Marris on Flickr

Caving equipment

• Bernies - Ingleton, Yorkshire
• Starless River - Barnard Castle, County Durham / mobile shop
• Caveclimb - Cheddar
• Caving Supplies - Buxton, Derbyshire
• Hitch n Hike - Bamford, Derbyshire (closed)
• Up & Under - Cardiff
• Inglesport - Ingleton, Yorkshire
• Crickhowell Adventure Gear
• Jump Suits - made to measure under/oversuits
• Caving Gear - North Wales
• Firefly Electronics - slave flash units
• ledcaplamps - Roy Fellows bat fryers
• Mine Explorer Retro - Mike Hrybyk's lamp for Oldham headsets
• Rude Nora - waterproof caving lamp
• SAR Products - formerly Troll
• Abacus - stock of the infamous Beal Black Death (intervention) 11mm rope

Other Outdoor Suppliers

• V12 Outdoor - Climbing gear, Llanberis