CrossFit TwentyThree
At CrossFit TwentyThree, you'll learn the power of functional fitness using the official CrossFit methodology under the expert guidance of our highly experienced coaches. Located in Forest Hill, London, we operate out of a newly expanded, bigger space fully equipped to cater to all athletic levels. Our box is built for more than just sweaty workouts—it is built on a foundation of genuine community. From your very first reps to the post-workout fist bumps, our mission is to provide an inclusive, motivating space where coaches care about your personal progress. No matter your starting point, we help you safely scale movements, build sustainable habits, and crush your fitness goals.
Expanded New Facility
Train in our newly opened, larger space designed specifically to accommodate premium rigging, cardio equipment, and heavy lifting safely.
Power in Community
We foster a supportive culture where athletes celebrate each other's achievements, building friendships that extend far beyond the gym floor.
Inclusive Scaling
Our experienced coaches adapt every workout to match your individual capabilities, ensuring a safe entry point for complete beginners.
Alex Watson
Head Coach & Co-Owner
An experienced CrossFit coach dedicated to helping athletes master foundational movements and safely push their physical boundaries.
George Bretherton
CrossFit Coach
Specializes in scaling workouts for beginners and mastering gymnastic elements, ensuring every member feels confident on the gym floor.
Sarah, 29 yrs
"CrossFit TwentyThree has completely transformed how I view fitness. The community is so welcoming and there's absolutely no ego. The coaches make sure your form is perfect every single class."
Michael, 36 yrs
"The coaches here genuinely care. Coming to this newly expanded box is the highlight of my day. If you're on the fence about starting, just book the 14-day trial!"
Main CrossFit Training Floor
A spacious, open-plan athletic zone equipped with specialized pull-up rigs, Olympic barbells, bumper plates, and kettlebells.
Engine and Conditioning Zone
Features premium conditioning equipment including Concept2 Rowers, SkiErgs, and Assault AirBikes to build maximum aerobic capacity.
Community and Social Space
A designated area for members to catch up before or after classes, grab a coffee, and connect with fellow community members.
14-Day Trial Program
A dedicated two-week trial allowing prospective members to experience our coaching, community, and training atmosphere with zero pressure.
CrossFit WOD (Workout of the Day)
Our core high-intensity group training program incorporating cardiovascular endurance, gymnastics, and weightlifting.
Unit 1 Dulwich Business Centre\\r\\nForest Hill, London, Greater London, United Kingdom
Open in Google MapsPlace ID: ChIJz_9B1HgDdkgRRAvmv3ZjyDE
CrossFit WOD
Entraînement du jour - séance intense et variée
Olympic Weightlifting
Specialized class
Open Gym
Accès libre à l'espace d'entraînement
Gymnastics Conditioning
Gymnastique - mobilité et skill work
Team WOD Saturdays
Entraînement du jour - séance intense et variée
Strengths
- Spacious Brand New Box - Our newly opened, larger facility allows for optimal workout setups, better equipment distribution, and spacious class sizes.
- Strong Supportive Culture - Driven by our motto 'Strength in Numbers,' we foster a highly inclusive and motivating community that keeps you accountable.
- Top-Tier Certified Coaches - Led by experienced coaches who place technical mastery and safety at the absolute forefront of every session.
Watch points
- No Wet Facilities - While we provide premium showers and changing rooms, we do not have an on-site sauna, steam room, or pool.
- Popular Peak Class Hours - Our early morning and late evening CrossFit sessions are highly popular and require booking in advance to secure a spot.
CrossFit WOD
Our signature class combining functional cardiovascular endurance, bodyweight gymnastics, and weightlifting. Perfect for building all-around physical readiness.
Objective: Functional Fitness & Conditioning
Olympic Weightlifting
A technique-focused class specifically targeting the Snatch, Clean & Jerk, and foundational strength building to improve explosive power.
Objective: Technical Strength & Power
Open Gym
Unstructured gym hours where members can work on personal skill deficiencies, follow specific programs, or catch up on missed training sessions.
Objective: Individual Practice
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Located on Malham Road within the Dulwich Business Centre in Forest Hill, Southeast London. It is a highly active, accessible neighborhood situated nicely between East Dulwich and Sydenham.
Public transport
Easily reached via Forest Hill Railway Station (London Overground), which is only a short walk from the gym floor. Local buses stop frequently along nearby Stanstead Road.
Parking
On-street parking is readily available along Malham Road and the surrounding commercial business estate areas.
Landmarks
Approach
We live by the phrase 'Strength in Numbers.' We believe that true fitness gains are forged through shared effort, encouragement, and a culture that leaves ego outside the door.
Methodology
We utilize the official CrossFit methodology: executing constantly varied functional movements at safe but challenging relative high intensities.
Progression
We systematically scale workouts for every individual athlete. Progression is carefully tracked, ensuring safe mechanical form before scaling up weight or speed.
Unlimited Monthly Membership
- Unlimited CrossFit WOD Classes
- Access to Olympic Weightlifting
- Full Open Gym access
- Discounts on community events
3x Weekly Membership
- Up to 3 classes per week
- Open Gym access
- Full community support
First visit
Please arrive 10-15 minutes prior to your first class. Our welcoming coaches will introduce themselves, tour our brand new space with you, and review your health goals.
Required equipment
Bring standard, comfortable athletic clothing, flat-soled training shoes, and a reusable water bottle to stay hydrated.
What a typical session looks like
Every structured session lasts exactly 60 minutes and includes a warm-up, a skill or strength section, the main high-intensity WOD, and a guided cool-down stretch.
Weightlifting & Rigs
Cardio Machines
Gymnastics Accessories
The Annual CrossFit Open
An exciting global event where our local community tests their fitness levels in a highly supportive, team-focused atmosphere.
Saturday Community Partner WOD
Team workouts where members pair up to complete fun, high-energy physical challenges together, followed by a social meetup.
Alex Watson
Alex co-founded CrossFit TwentyThree with the vision of building a powerhouse community. He loves breaking down complex weightlifting mechanics to make lifting safe, approachable, and fun for all levels.
George Bretherton
George is dedicated to making sure every athlete, no matter their background, feels included. He focuses extensively on range of motion and core gymnastics fundamentals.
CrossFit Inc.
Officially affiliated with CrossFit Inc., ensuring quality training methods and standardized safety procedures.
Flexible membership tiers are available including Unlimited and Part-time access. A dedicated 14-day trial is offered for new local members to experience the facility. Contact us directly for active rates and custom corporate plans.