I have no financial connection with the diving trade and the diving gear trade.
Links corrected 20 February 2020.
www.bsac.com/home/ :: BSAC
www.thehds.com/ :: HDS (= Historical Diving Society)
www.aquanaut.com/mlist/index.html :: Aquanaut Mailing List Archives
www.ukdiving.co.uk :: UK Diving, scuba diving resource for the UK with Dive International
www.users.globalnet.co.uk/~diving/ :: Welcome to 'Cirrus' (Diving in Anglesey)
www.buyrope.co.uk/diving-safety/ :: diving safety resources
www.divingdoc.com/ :: site dedicated to diving medicine
www.hawaiianshirtsonline.co.uk/scuba-diving-glossary/ :: glossary of scuba diving terms