Edinburgh born Will Bosi is one of the world's top climbers. At just 17 years of age, Will became the youngest Brit to have climbed 9a with his repeat of Rainshadow at Malham Cove. In 2018 he became first British male in 20 years to reach the final of a lead World Cup, and in 2021 he made the first ascent of his hardest route to date, King Capella, which he proposed at 9b+.

More recently, Will has turned his attentions towards bouldering, where he has quickly established himself as one of the leading lights of the scene, with three 9A ascents in just eighteen months.