UK Regional Cave and Mines Access guides summary

Mendip

Council of Sothern Caving Clubs (CSCC): https://access-guide.cscc.org.uk

Charterhouse Area Caves Create a Permit: https://permits.charterhouse-caving-company.ltd.uk

South Wales

Llangattock area: https://chelseaspelaeo.org/cave%20info.htm

Penwyllt area: https://www.swcc.org.uk/joomla-swcc/caving/local-caves-access

Devon and Cornwall

Devon and Cornwall Underground Council (DCUC): https://dcuc.org.uk/cave-access/

Derbyshire

Peak District: https://peakdistrictcaving.info/home/the-caves

Northern

Council of Northern Caving Clubs (CNCC): https://cncc.org.uk/caving/

Do note this is not a definitive list.