As the only double amputee who has stood on the summit of Mt Everest,  Mark can truly define the often-used saying, “Attitude determines your Altitude”.

Having lost his legs at 23 due to frostbite and then going on to be the first double amputee to have stood on the roof of the world, the summit of Mount Everest, Mark  has carved out careers as a scientist, a world recognised winemaker, business innovator, a medal-winning paralympic athlete, trekking guide, philanthropist and a leading international motivational speaker.