CrossFit® TwentyThree
The center is an official CrossFit® affiliate. Last checked: 08/09/2025
CrossFit is a registered trademark owned by CrossFit, LLC, which is not affiliated with FitFit UK.
Information about CrossFit® TwentyThree
, Dover
CrossFit® TwentyThree: Opinions
Fantastic experience: I'm halfway through the 14 day trial and loving CF23 so far. George & Alex are such great coaches, taking you through all the movements extremely clearly and motivating throughout the workout. I was new to CrossFit so was a bit apprehensive about some of the lifts before starting but they've really helped me focus on form and slowly scale weights up, which is great for beginners. The workouts are varied and a good range of timeslots available. It's also a super friendly and welcoming vibe generally, from the coaches to the members. Feels like a community to train in at all levels which is really nice. Highly recommend!
Fantastic experience: So glad I took a chance on that IG ad! Alex and George have done an amazing job with CF23, and it’s a credit to them. The coaching is first class, and they bring their knowledge, their enthusiasm and energy to every session. Really great variety of classes and workouts every day, never feel like it’s repetitive and I can feel and see my improvements week on week, I’m looking forward to every session! Can’t recommend it enough!
Fantastic experience: A CrossFit box was the only thing missing in Forest Hill. Not anymore, and not any given box. CF23 has everything you need to enhance your fitness and health journey wherever you are. The 2 founders are ridiculously friendly. Their Moto is "Strength in Numbers" for 3 reasons: the name 23, the results you can see and easily measure, and above all, the community to support you to smash your targets.
Fantastic experience: CrossFit 23 is an incredible home to its talented coaches and wonderful community. George and Alex continuously push you to what they know you can achieve (which is more than what you think you are capable of). Coaching, facilities, community - all top top tier
Fantastic experience: I've known the owners and coaches since before they opened CF23. They've created the most amazing box, which is welcoming of anyone. They genuinely care about there members and are doing everything they can to create a community and help people get fit.
Fantastic experience: Awesome coach, awesome people and awesome atmosphere. I am new to crossfit but already seeing a huge difference in my athletic and physical ability and this is all thanks to the team at CrossFit Twenty Three.
Fantastic experience: I am loving every minute of my time at CrossFit Twenty Three! The training is exceptional, the community so friendly and supportive, and my strength and fitness has never been better. I couldn’t recommend it more!
Fantastic experience: Such a great gym & community. The coaches make you feel so welcome and are sooo knowledgeable about everything fitness. Definitely give it a try.
Fantastic experience: I've joined regular gyms before and also signed up for home fitness programmes but struggled to be motivated to keep it up. I did the 14 day trial and loved it straight away. I've never done anything like this before, I've been more into yoga, pilates, swimming, running or dance; so it was a shock to me to enjoy this kind of fitness! I love CrossFit TwentyThree because the coaches are AMAZING. George and Alex are incredible professionals, they tailor every session to individual's needs, they care deeply about member's experiences and fostering a community and take the time to organise a range of socials. The culture they set is so inclusive and welcoming and I feel so lucky to be part of it. I've met loads of awesome people and I've never felt in better shape. Can't recommend it enough!
Fantastic experience: CF23 is absolutely awesome. As a first timer to Crossfit, I wasn’t sure what to expect but Alex and George have created an incredible gym. They provide top quality coaching in an environment that is incredibly friendly and welcoming regardless if you are a beginner or expert. Great variety of workouts, lovely people which makes for a fantastic local community and fun socials too. By far the best fitness decision that I have made and has quickly become very addictive! I couldn’t recommend it more highly to people considering joining.
Fantastic experience: Best CrossFit gym I’ve been to - coaches Alex and George are super knowledgeable, supportive, and diligent about proper form and safety. The focus on community means the gym has a kind atmosphere that motivates people to do their best. Classes always run to time and there’s a great mezzanine space for pre/post workout stretches, as well as showers. Would encourage anyone thinking about starting CrossFit or coming to a new box to check out CF23!
Fantastic experience: Absolutely incredible community. Could not recommend CF23 more highly. The co-founders come-trainers are absolutely first-class. In the three short months I’ve been going I’ve seen my fitness and technique progress at a rate I didn’t think possible. I put that down to the skill and ability of both Alex and George. The take away is that they really care about your time and your fitness, and so does the community. ☀️
Fantastic experience: The word crossfit scared me a little, but Alex and George the trainers/owners put those worries to rest instantly. They are Incredibly warm and welcoming from the get go and really encourage learning. The classes suit all levels from beginner to pro and although they are group classes you get individual on the spot guidance, and it’s pretty much your own person PT but you get 2 !! Whether you’re training to get quicker, lift more or get fitter, this place has it all. They really are at the top of the game and the community that comes with it, is a very added and welcome bonus.
Fantastic experience: A really welcoming gym. Sense of community is extremely strong. All workouts are scaled for your fitness level and George and Alex are great with encouraging you to do your best! Fun socials too - couldn't recommend it more!
Fantastic experience: This gym is great. The instructors are excellent and really considerate of different abilities. Highly recommend.
Fantastic experience: CrossFit23 is fantastic. So impressed with what the owners/coaches Alex and George have created. The community they have built is fantastic and the quality of their coaching is top notch. I’ve tried various group fitness environments over the years and can hand on heart say this is the best I’ve been to. They bring an amazing energy in all the classes and are welcoming to all abilities. Somehow they manage to coach every person in the room individually in every class. Couldn’t recommend CF23 more.
Fantastic experience: Fantastic atmosphere, facilities, and trainers. The trainers really make you feel welcome and help to drive excellent workouts. There is a great community, and all the equipment is spot on. Look forward to going here each day.
Fantastic experience: A must try, not just if you’re into CrossFit but if you’re into fitness at all. Great vibe and lovely friendly community. The coaches are so patient and very knowledgeable, the space is always clean and tidy. Worth coming in for anyone considering it.
Fantastic experience: Although I'm a total newbie to Crossfit, the coaches and founders (Alex and George) are so welcoming and supportive that it didn't feel daunting starting at all. The coaches break down every movement so everyone learns the proper technique together and, as the class sizes are limited, they offer lots of 1:1 coaching during the classes. The coaches also offer movement modifications so, no matter what your skill level/experience is, you can always comfortably challenge yourself. There is such a friendly and supportive atmosphere in every class, with everyone celebrating each other's achievements. CrossFit TwentyThree is building such a great community in Forest Hill (both inside and outside of the gym), and I cannot recommend them highly enough!!
Fantastic experience: Brilliant gym
Fantastic experience: New CrossFit box opened by coaches Alex and George. I can highly recommend them, very friendly, knowledgeable and supportive no matter if you are a seasoned athlete or someone who wants to try out something new. Coaches gave me lot of support on my baby steps in CrossFit after long term injury and helped me better myself. Thank you guys!
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