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Our Team

"Group of like-minded individuals with a common purpose within the business as friends who have worked together for many years. We are an extended family."

Andy Bowman
Founder & General Manager

Andy has been climbing for over 45 years, it has dictated the direction of his life. With over 30 years experience working some of the most important and influential brands in the outdoor business his one man agency expanded to incorporate 8 people over this time. 5 years ago he sold the business to travel and climb but the chance to work with Black Diamond was too great, so here we are, the old crew back together for the new adventure.

Sean Manley

Head of Sales and Marketing

Snow & Trail Category Specialist

Sean came to us from his co-owned ski school business in France. One summer he got the call from Bigstone, he was our primary 5.10 bike representative alongside the Arcteryx UK work and rejoined the dedicated Bigstone crew to head up all things Backcountry Ski and Snow alongside handling our key Trail Category.

Joanne Keen
Head of Operations & Finance

Jo has worked in the Outdoor business for over 20 years. With Bigstone from the start when we represented Boreal & Mammut through to the ‘glory’ years with 5.10 and establishing the Arcteryx business in the UK, she rejoins us after a sabbatical and heads up all our office administration and financial management.

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Adam Simpson

Sales Manager

Climb Category Specialist

Adam became hooked on climbing over a decade ago and it has become the main focus of his life ever since. This obsession pulled him from a background in design to work with brands like Mountain Hardware and Kendal Mountain Festival. A self professed "gear geek" he now has the pleasure of overseeing the climbing category at Black Diamond in the UK.

George Staples

Sales, Service and Marketing Specialist

George is currently the youngest and potentially fastest member of the Bigstone team. An accomplished runner and triathlete George has unparalleled enthusiasm for the outdoors.

George will be supporting customer service, day to day operations, retail marketing, events and has already become a key linchpin in the Bigstone team. 

Sidonie Graham

Sales, Service and Marketing Specialist

Sid lives and breaths climbing! Originally from the North East but now based in Sheffield. Sidonie has a super strong rock climbing background: Former GB team member, yoga teacher and previously worked part time as coach at The Depot Climbing.

Sid will be Supporting all things climbing, specifically Gyms / Climbing Wall accounts, events, marketing, customer service and bolsters the new generation of people here at Bigstone.

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Rhys Henderson

Sales Ambassador

After many carefree years alternating ski seasons with working in outdoor centres, Rhys got a proper job in the outdoor industry.  Proud to have worked for some of the best brands around (Salomon, Patagonia, Scott, MHW), Rhys couldn’t believe his good fortune when Andy Bowman invited him to become part of the Bigstone crew with a brief to increase the profile of Black Diamond Running along side our other product lines.


Rhys handles dedicated retailer sales as well as supporting our many dealer and customer events around the UK.

Iain Innes

Tech Trainer

One of our Black Diamond UK ambassadors and former GB Team Youth Olympian (Alpine Ski) Iain supports our training and events tapping into his vast winter sports, climbing and running experience.


Iain always has a project on the go weather thats skiing far out lines in Scotland, ticking off summer Alpine Mountaineering routes or simply setting the Fastest known unsupported Time running up Mt Blanc from Les Houches. Iains enthusiasm for his sports embodies why we all work within the industry and it’s great to have him working with the team.

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