By far it’s the best boxing class I’ve done. The participant to instructor ratio is amazing (especially when you compare to places like BLOK or AnotherSpace) and the focus is on actually boxing and technique comes at the same time, rather than classes that spend AGES on technique and no boxing. The coaches are really friendly too.

Onyx is the best gym I've been to by far. I used to always avoid classes in gyms, but Onyx classes are fun, personal and progressive. It feels like a group PT session, which is the opposite to most gym classes out there. I love going here as the coaches are all really nice people and really experienced trainers.

My training has improved significantly since onyx. Its challenging, fun, intense, and safe given Im someone who has had extensive injuries in the past. Would say Its a good place both for beginners and people who like to be challenged. Trainers are experienced, professional, and all round lovely humans.

Dropped in during the open weekend. Was warmly welcomed at reception by one of the coaches and put through my paces during a conditioning class. All the coaches were very attentive and ensured I knew what I was doing. I will be back and recommend the gym to all looking for a good workout.

Exercise has never been more fun or more appealing, and it’s all thanks to coaches who are at the top of their game and well-planned classes. The addition of heart rate monitors and a projector allow u to track how hard you're working and push yourself that extra mile during sessions.

My second year with Christian and though I’ve moved out of the area, I have kept my training sessions with him. Highly professional, he’s meticulous, has great people skills (puts one at ease), and monitors the progress. Training is never boring and I’m very happy with the results,

Onyx is a boutique gym with trainers who really know their stuff. The classes are fun, inclusive and cater to all levels whether you’re a beginner or advanced. The team have created something really special with a great atmosphere that makes it a great place to train.

DId a 'SWEAT' session yesterday evening and me and my daughter loved it! Great trainer ( sorry forgot his name - 7:30 pm instructor ) , very knowledgeable, happy to explain exercises and very supportive! Thanks for a great session! We will definitely be back! …

My friends and I had a personal training session at 6am on the rings. Vic was brilliant, we were amazed at how much our technique and range of mobility improved in an hour. Highly recommend Onyx, a good feel and great place to work out with top personal trainers.

As an athlete myself I only have respect for personal trainers who know their stuff. These guys are experienced and knowledgeable. They deliver structured fitness programmes which show their understand the body and its biomechanics. Keep up the good work!

Really nice gym with a group very experienced coaches, each with their own specialisms. I attented the Movement and Mobility class in the opening week and thoroughly enjoyed it. I’m looking forward to trying out the Functional Strength class next!

The movement and mobility class I attended was a thoroughly enjoyable experience - and it worked muscles I didn't know I had! Both coaches (Vik and Jack) were excellent, really patient and knowledgeable. Would highly recommend, and I will be back!

I had the pleasure of a Muay Thai PT session with Christian today, top quality training. Amazing looking gym, backed up by all of the equipment in a friendly relaxed environment. Left the building feeling better than when I entered! Thanks! :D

This is a new, really well thought out top training zone. The classes are varied and cater for all levels . They are good times of the day too and easy to book on-line. If you want one to one sessions, these are also available from positive

AMAZING GYM!!! Onyx has great facilities and high quality equipment. Classes are always challenging in a good way which keeps you motivated! They focus on ALL the different muscle groups, movement and mobility; always ensuring that we are

Been to a few sessions and can already tell you won't find a gym like this anywhere else in London, let alone North London... Definitely worth checking out if you're tired of the standard, stale, soulless gym atmosphere currently plaguing

I have not been asked to do a review and don’t normally do stuff like this. But there I was living in a new area where I knew no one closer than a 12 min drive away with 2 teens who do their own thing, but sitting on the sofa under a pile

For anyone that’s intimidated or nervous to walk into a gym environment with Onyx you don’t need to be. With small classes, led by excellent personal trainers and friendly members you will have fun and get a great workout at the same time!

Got recommended by a friend and she did not exaggerate how good this gym is. Solid group PT sessions, I go two times per week and getting so much stronger with good weight training programs, which help a lot with other sports I enjoy. On

Christian, Jack, Clark & Ellie, Ibi & Natasha & Thierry have been absolutely amazing! I was searching for gyms in the area Whetstone for 6.30 am morning classes as I have to work. There were hardly any, but I found this little gem! Ellie

I have been training with Vik for over a year now and have to say he is the best trainer I have ever had. His knowledge and enthusiasm is inspiring. I have had great results so far and am still really enjoying our sessions and achieving

Onyx is an absolute gem. Fantastic (and brand new!) equipment with highly professional trainers who really challenge you to push yourself physically and mentally. What I like most about is that the trainers make rigorous exercise fun, I

I have been training at various gyms for the past 20 years. Onyx Fitness, Finchley is in my opinion one of the best. The staff are very professional and welcoming. All training sessions are totally different targeting various parts of

Great environment for classes and PT 1-2-1s, the PTs at Onyx are knowledgeable and really help in all aspects of training, pushing your limits, testing your strength, helping with any issues. Friendly atmosphere and excellent set up.

I've trained with Jack and has been a really good PT session both times. The way they look at exercise is so different and mindful. The space is lovely and really inviting. The staff are all really nice.

Really great class! Adapted to suit abilities and the staff really know how to get the best from you without being overbearing. Very friendly, supportive and knowledgeable. I was dead after the session!

I absolutely love this gym! The sessions are a perfect blend of challenge and accomplishment. The trainers are phenomenal, providing excellent guidance, and the programs are both diverse and effective.

super friendly, positive and knowledgeable trainers in a very modern, well kitted out and clean gym which is a joy to be taught and train in. first time today, will def be going back for more !!

I've just popped into their gym in North Finchley yesterday. The first impact was a very positive one ..... cleaned and organised place....nice structure and equipment...professional staff!

The coaches made me feel very welcome and made my experience thoroughly enjoyable! They were encouraging throughout the session and definitely push you beyond your limits!

Onyx is one of a kind and so are the coaches! They are experienced, attentive and push you to be better each visit! Thank you for creating a great space!

Such an amazing gym with brilliant PTs. I have never had a bad class and even having loved make sure I travel to make as many classes as I can!!

Great all around experience. Coaching standard is excellent, would highly recommend to anyone looking to get in shape or already in shape.

Vic and the team are second to none. The A team of personal trainers in one place. Where else would you want to go?

Been a member for a few years now.The team are brilliant and make sessions feel very personal.Simply The Best .

Great people! I'm was apprehensive on my first visit but super nice people, felt welcome and enjoyed myself.

Excellent and friendly coaches. I never thought I'd enjoy the gym this much.

Hidden gem of a gym in North Finchley! Great facilities & friendly PTs.

The Boxing is 5 Stars because of the value and quality teachers

Great small gym classes.