Greg Boswell is one of Scotland's most experienced and talented winter climbers, with myriad hard first ascents up to XII/12 to his name. Originally from West Cumbria, Will Sim is one of Britain's best all round climbers, having made hard ascents of everything, from sport climbs to new routes in the greater ranges. Like Greg, he is particularly drawn to the adventurous side of climbing. The pair of them first climbed together in Scotland in winter and have since made numerous first ascents and early repeats of hard Scottish routes. In 2017, after a few years of climbing separately, they teamed up for a month-long trip to Alaska, where they established two hard first ascents in stunning weather.