A passionate mountaineer and writer, Guy lives with his family in Aberdeen, Scotland, where he works for a low carbon energy engineering consultancy. He has put up new rock and winter climbs in regions as diverse as Africa, the Middle East, the Alps, Peru, Norway and the Greater Himalaya. However, it is for his explorations in Scotland he is rightly best known, having for many years been at the forefront of exploratory climbing there both in winter and on rock.
In the early 2000’s Guy made second ascents of many of the hardest winter test-pieces from the 1980’s and 1990’s, and since then has pioneered dozens of first ascents across Scotland up to grade X. These are typically long and sustained mixed routes, often in very remote locations, and always climbed from the ground up. This committing and adventurous approach encapsulates the very essence of what Scottish winter climbing is all about.
Guy has also established a reputation for finding beautiful new hard lines on Scottish mountain rock, climbing a batch of high-quality routes in the Cairngorms and Northwest Highlands up to E7. Despite his penchant for quality over quantity, he has now climbed more than 300 new routes in Scotland alone, making him one of the country’s most prolific pioneers of recent times.
He has also now published three coffee table books on Scottish climbing – the Great Mountain Crags of Scotland (2015); The Great Sea Cliffs of Scotland (2020) and The Great Mixed Climbs of Scotland (2025) – with several other books in the pipeline.