Get Fit Fast – Achieve Your Goals – Feel More Confident



Get Fit Fast – Achieve Your Goals – Feel Confident

Outdoor Group Fitness

Book Your Free Trial

Come and join us at one of our outdoor group fitness sessions, book your free trial and reap the benefits of outdoor group fitness classes with others in your community.

Book your free trial now.

#GETFITFAST with One Element





East Hampshire



Tooting & Streatham


Free Trial

Our outdoor fitness sessions are based on pre-season sports training and are not only designed to deliver swift increases in your fitness and energy levels, but you’ll also meet new friends in the One Element family. Book a free trial so you can see for yourself!


Watch the video

Free Trial

Our outdoor fitness sessions are based on pre-season sports training and are not only designed to deliver swift increases in your fitness and energy levels, but you’ll also meet new friends in the One Element family. Book a free trial so you can see for yourself!

Watch the video

Outdoor group fitness

“We use our outdoor fitness classes to build a supportive, positive, social atmosphere to deliver the best fitness results. The training is deliberately challenging but we motivate everyone to work at their own pace, within their abilities. That’s what One Element is all about.”

Tom Marien, One Element, Founder


We encourage and
inspire, without
the shouting.

At One Element,  we have been developing our HiiT or circuit training format programmes since 2007. Each week we systematically rotate the sessions we know work. So we can build on the previous week’s session. Helping to ensure that your fitness levels continue to improve and you see results.



When I lived in London I became a bit addicted to one element! I loved the workouts, the community,... the support and the skills of the trainers. Tom is absolutely fantastic at what he does, very knowledgable and has built an amazing company. If I still lived there it would still be a crucial part of my week, and I haven't found a boot camp as good since I more
I've often wondered how people 'get the fitness bug' after years of me failing to keep my... attendance up at the gym. I found the gym too monotonous, boring and unfriendly. I then discovered One Element 4 years ago and finally I have the fitness bug🥳 I attend 3 times every week and really look forward to it. It is different each week so every muscle is being worked and I have made amazing great new friends as there is a strong social side to One Element. I love training outside and cannot ever imagine going back to exercising indoors. I thought I'd be a fair weather girl but it turns out the winters are the best! Give it a try, you won't look back!read more
I love training with One Element! Such a friendly group of people who somehow managed to get me... excited about training outside. The trainers are fantastic and the workouts are varied (any level is welcome). It can be tough at times but totally worth it!!! I always feel great after a One Element session and I can see myself getting fitter which feels amazing. Would highly recommend ☺️read more
Started One Element this year and loving it! As someone who works 12+ hours a day means it's hard... to motivate myself to get to the gym so being able to get fresh air on the common and get fit is a win win for me!
Would recommend to everyone and anyone! Very welcoming bunch of people and great for all fitness levels! Give it a go once and you'll be coming back for more!
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I’ve been a member since 2011 and I love it. I’ve met the most amazing people and I love the... variety and friendliness of the sessions. Everyone is supportive no matter what your ability and it’s a great way to keep fit in a fun, friendly environment. Great coaches too. Highly recommend!read more
I’ve been coming to OE for a scarily impressive number of years now! - Tooting is a great group of... fun, supportive and lovely people. Kate works us hard but is the best trainer I’ve ever had - incredibly motivational and alongside getting fit and healthy we have a great laugh too - what’s not to like?!read more
One of the most friendly group of people you could ever train with. Very varied and challenging... sessions with no one either left out or forgotten about and training to suit all levelsread more
Fantastic group of local people all encouraging you to reach your own goals, whatever your level of... fitness. Great trainers, and training outside feels healthier, hardier and something else positive beginning with h that would make a nice alliteration - but can’t think of appropriate word right now... had I trained this eve I would have greater clarity of thought (another benefit, albeit short term, clearly!) Anyway, just try it out - if you come back after your first session you’ll be hooked for years - promise!read more
Great way to get fit outside whilst making new friends and having fun!
Try it out with a free... trialread more
I have been training with Tom and his team for about 6 months and I absolutely love it. I feel... fitter, stronger, and I actually enjoy training so much more now i can do it in such a supportive and friendly environment. I am making friends now I know I will have for a very long time. Thank you One Element for making my life better!read more
I love One Element! The fitness sessions vary each week to keep things fresh and the community of... people, including Tom and his exceptional trainers, make it the best fitness company out there. It’s easy to stick to it, because it’s so much fun, and the socials, holidays, talks from inspiring athletes, team sporting opportunities and just the camaraderie of training with friends in a group make it simply the best. I can’t recommend it highly more
I've really enjoyed the way One Element not only gives you the benefits of high intensity training,... but also helps with the nutritional and recovery side as well. And once you add in the fun social side of the club, this really has to be one of the best social fitness clubs about! Highly more
I was never motivated in the gym so decided to try One Element. That was nearly 8 years ago and I... still love it. It won't take long to see a huge difference in your fitness levels as the tailored HIIT sessions get results. All trainers encourage you to push yourself harder in a positive way so you don't feel intimidated. I've made great friends along the way and recommend anyone to give it a go. You won't regret it!read more
It's a great way to get fit, meet new people, make friends and have fun at the same time, come rain... or shine.
I joined One Element in 2011 and it's one of the best decisions I've ever made.
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One Element provided me with essential strength and endurance training to complete the London... Marathon 2018. The sessions are the best I've done and the community is more
A brilliant way to keep fit. You can be pushed to your limits or take it as easy as you wish. Three... things are guaranteed - you will get fitter, you will have fun and you will be meet some great people. Outside of training there are regular fantastic sport and social events organised. I would recommend to anybody of any age and any fitness level. Give it a go!read more