Ahhh but to dig up the dead. . . BSAC considers long primary hoses and primary donate a no-fly zoneyou're in the UK, king of dive clubs. Find one local to you with divers that are like minded and try to find a mentor. Other than that, read read read. If you want to be serious about your dive planning and self sufficiency, I would recommend taking a GUE fundamentals course aka Fundies.