Born in 1955. Scottish climber and IFMGA guide. He established many new hard winter routes in Scotland. His Himalayan climbs include a new route on the south face of Pumori, Lhotse West Summit, and the third ascent of the Muztagh Tower. However, he has also made significant attempts on what were then major unclimbed lines, such as the northeast ridge of Everest and Kalanka north face. His most significant high mountain achievement is undoubtedly the first complete ascent of the Mazeno Ridge of Nanga Parbat, a route awarded a Piolet d’Or in 2013.