Meet the Team Behind Your Transformation
Elite Coaches. Proven Results.
Not Personal Trainers. Performance Coaches.
Every coach at BTX holds advanced qualifications — and more importantly, every one of them has walked the path personally. They’ve competed, they’ve struggled, they’ve rebuilt. That’s what makes them different.
We don’t hire trainers who stand and watch. We hire coaches who show up, who know your name, who remember that you mentioned your knee plays up on deadlift day. BTX is a small team by design — because real transformation is built on relationships, not volume.
192
Five-Star Reviews
5.0★
Google Rating
500+
Transformations
6am–10pm
7 Days a Week
The Coaches
Seven coaches. Combined decades of experience across strength, nutrition, body recomposition, HYROX, calisthenics, and rehabilitation. Each one personally selected by James Cooper — because at BTX, the standard isn’t negotiable.
James Cooper
Founder & CEO
Educated at King’s College London. The youngest British-born BJJ black belt recipient in history. James built BTX on one principle: elite coaching produces elite results.
Szymon Binkowski
Head Coach
Born in Poland, trained everywhere. Szymon turned his own transformation into a methodology — his clients’ results speak for themselves across 192 five-star reviews.
Mariyan Voykov
Manager & Senior Coach
Hyrox · Endurance · Strength & Conditioning
MSc Sports and Exercise Science and a BSc in Biomedical Science, with 10+ years in the industry. Mariyan coaches Hyrox, marathon, cycling and CrossFit athletes, and brings the physiology behind every session.
Giuseppe Marchesani
Senior Coach
From corporate law to elite coaching. Giuseppe spent 4 years at Fitness First before joining BTX — because he recognised a team that holds the same non-negotiable standard he does.
Benjamin
Coach · Sports Science Lecturer
Qualified since 2009. Former college lecturer in Anatomy, Physiology and Nutrition. Benjamin brings academic rigour and warm hands-on coaching to every client who walks through the door.
Nicoletta
Coach
Deeply technical. Passionately human. Nicoletta’s coaching is built on movement quality and precise biomechanics — because the way you move determines how far you can go.
No Commitment. No Sales Pitch.
Train With the Best in North London
A 15-minute call with one of our coaches. We’ll understand your goals, answer your questions honestly, and tell you whether BTX is the right fit — no pressure, no obligation.