Onyx Fitness
every session has a purpose
every member has a plan
nobody trains alone
Onyx is a private coaching gym in North Finchley, London. We offer coach-led classes, personal training and a community built around actually showing up and actually getting results.
Most gyms just give you access. We give you a programme, a coach and a community.
At Onyx, every session is coach-led and every programme is designed with purpose. There's no wandering the floor wondering what to do, no training in isolation and no wasted effort. You get expert coaching, a structured plan and a group of people around you who show up consistently because that's what actually drives results.
This isn't just about the hour you spend with us. Onyx is built to support every part of your training life from coached sessions and 1-2-1 training to programming you can follow anywhere and in-house support when your body needs it. This is what training properly actually feels like.
Small group coaching classes
Our most popular way to train. Every session is coach-led with a small member-to-coach ratio, structured programming and a group of people around you who keep showing up. Four class types, all abilities welcome.
See all classes and view timetable →1-2-1 personal training
Fully bespoke coaching built around your goals, your schedule and your starting point. Specialists in strength, boxing, mobility, fat loss and body transformation — matched to the right coach from the start.
Training outside of classes
Your membership goes beyond the studio. Follow Onyx programming via the app at home, outside or while travelling — or use open gym slots to train independently in the studio whenever it suits you.
In-house osteopathy
Our resident osteopaths specialise in sports injuries, chronic pain and movement rehabilitation — available as standalone appointments or integrated directly alongside your training programme.