Training Agencies
BSAC: British Sub Aqua Club
DAN: Divers Alert Network
IANTD: International Association of Nitrox & Technical Divers
PADI: Professional Association of Diving Instructors
SDI: Scuba Diving International
TDI: Technical Diving International

Technical Diving
Deep Image: A collection of deep wreck images by Leigh Bishop
Dive125: Dive the South & East UK coast aboard Dave & Sylvia's offshore 125
Starfish Enterprise: UK technical diving team
U-boat.Net: U-boat information website

Rebreathers
Ambient Pressure Diving: Manufacturer of the Inspiration & Evolution CCR
Closed Circuit Research: Manufacturer of the Ouroboros CCR
Diver Dave's Rebreather Site: The inner workings of CCR's, old and new
InnerSpace Systems Corp: Manufacturer of the Megalodon CCR
Jetsam Technologies: Manufacturer of the Kiss Classic & Sport CCR
Rebreather World: Information & photos of various CCR's
Rebreathers Worldwide: Rebreather information & photos by Jan Willem Bech

Equipment
Custom Divers: Technical diving equipment manufacturer
Delta P Technology: Manufactures of the VR2 & VR3 dive computer
O-Three: Drysuit manufacturer

Decompression Diving Software
DDPlan: Gordon Henderson's freeware OC & CCR decompression software
DivePlan: Greg Roach's decompression software for Psion 5 & other EPOC handheld PDA's
GAP: Kees Hofwegen & Peter Fjelsten's freeware OC & CC decompression software
Pro Planner: DOS based OC & CC decompression software

Miscellaneous
Divers Lodge: Recreational & Technical diving centre in Hurghada, Egypt
Red Sea College: Recreational & Technical diving centre in Sharm El-Sheikh, Egypt
Tavern 1 & Tavern 2 Bar: Popular British bars in Sharm El-Sheikh, Egypt
Norwich Scuba: Recreational & Technical diver training in East Anglia
Sail Rock Divers: Recreational & Technical diver training in Thailand