Will Bosi is one of the most accomplished young climbers in the UK, having already reached the upper echelons of climbing achievement. He was the second Brit to climb 9b, the youngest to ever climb 9a and the first male competitor to make a World Cup final in decades. In 2021 he made the first ascent of King Capella, at Siurrana, for which he proposed a grade of 9b+. If confirmed it would make him the first British climber to have achieved this level of difficulty. With all this and more under his belt, it's exciting to think what may lie ahead for this committed and talented young climber.
Will, who hails from Edinburgh, Scotland, was introduced to climbing when he was six years old by his brother and says he was hooked straight away. By the time Will reached his teens he was making good progress through the grades, climbing his first 7c, 7c+ and 8a in 2012, when he was just 14. That year he also qualified for the GB Junior Team and made finals at his first IFSC World Youth Championships, in Singapore, where he placed fourth. The following year, alongside ticking his first 8a+, 8b and 8b+ routes, he also claimed two silver medals at European Youth Cup lead and speed events.
“Back then I had no idea really you could be a professional climber,” says Will, “but I definitely knew I wanted to climb as much as possible!”
Clearly, Will was starting to make a name for himself as one of Britains best young competition climbers, but his achievements outdoors were fast proving that the youngster was one to watch on real rock, too. His first landmark outdoor ascent came in 2015 when, at 16, Will climbed his first 8B+ (V14) boulder, Monk Life, at Kyloe-in-the-Woods, Northumberland. Impressively, it took Will only two sessions work out the moves before sending the boulder promptly on his third visit.
Little more than six months later, Will achieved another landmark ascent—and made history—by becoming the youngest Brit to climb 9a. Then 17 years old, Will took eight sessions to complete Steve McClure’s infamous Rainshadow at Malham Cove. According to Will this route constituted his first real project, taking eight days to achieve, whereas previous routes he usually climbed within two days.
“[Rainshadow] had been a goal of mine for so long,” says Will, “so the feeling of topping it out was amazing! However I definitely had other routes in mind so I knew it was a stepping stone.”
One of the “other routes” Will had in mind was Hubble at Raven Tor, and this was the the next seriously high-profile route he turned his attention to in the autumn of 2016. Since being upgraded from 8c+, the Ben Moon line from 1990, which contains a powerful 8B+ crux section on undercuts, is considered by many to be the first 9a route in the world.
“They are both very different routes style-wise, that’s for sure,” says Will of how the two 9a routes compared. “Rainshadow took eight sessions whereas Hubble took six, but I’m definitely more of a power climber, so Hubble suited me better.”