One-upmanship is an inescapable part of adventure travel. There’s no hallowed reverence for centenary years, heritage properties or a hospitality legacy here; instead the metrics are faster, higher, deeper, stranger. Recent studies have suggested those inclined to such pursuits might be hard-wired that way, with a “reduced cortical thickness, or gray matter, in brain regions associated with decision making and self-control”. If you suspect your own brain might be light on some of that gray matter, Pelorus is the travel company for you. Night skiing off-piste in British Columbia? They’re the first to offer it. Fancy chartering a superyacht in Antarctica or diving in the Belize jungle? They can sort that, too. Set up by Geordie Mackay-Lewis and Jimmy Carroll, two former British Army officers with experience in luxury adventure travel, there are no set templates for trips. Each itinerary is completely bespoke, so do your worst.