C3 Fitness gym floor with modern equipment
Premium Fitness Experience

PUSH BEYOND YOUR LIMITS

Core strength. Cardio power. Total conditioning. At C3 Fitness, every rep, every run, every session is engineered to get you results — faster.

2,400+ Active Members
18+ Expert Coaches
6 AM–11 PM Open Daily
0 Members
0 Coaches
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C3 Fitness training floor
Coach guiding member through workout
#1 Rated
Gym 2024

A Gym Built
Around Results

C3 Fitness was founded on one belief: that every person deserves a training environment that pushes them to be their best. We're not a big-box gym — we're a performance facility.

Our three pillars — Core, Cardio, and Conditioning — form the foundation of every program we offer. Whether you're a first-timer or a competitive athlete, our expert coaches build a path tailored to your goals.

State-of-the-Art Equipment

Over 200 premium machines and free-weight stations, refreshed annually.

Community-First Culture

Members support each other. Our coaches know every name on the floor.

Progress Tracking

Monthly assessments, body composition scans, and personalised goal reviews.

Get Started Today

Training Programs

Six results-driven programs — each designed to target a different dimension of your fitness.

HIIT Cardio
Cardio

HIIT Cardio Blast

High-intensity interval training that maximises calorie burn and cardiovascular conditioning in just 45 minutes.

45 min Intermediate
Strength & Power
Strength

Strength & Power

Progressive overload barbell programming for raw strength gains. Squat, deadlift, press — coached to perfection.

75 min Advanced
Functional Conditioning
Conditioning

Functional Conditioning

Sport-inspired metabolic circuits combining sleds, battle ropes, kettlebells and plyometrics for elite athleticism.

50 min Intermediate
Yoga & Mobility
Recovery

Yoga & Mobility

Active recovery, deep stretching and breathwork to accelerate recovery, prevent injury and restore movement quality.

60 min All levels
1-on-1 Personal Training
Personal

1-on-1 Personal Training

Fully bespoke sessions built around your goals, schedule and current fitness level. Maximum results, zero guesswork.

60 min All levels

Choose Your Plan

Transparent pricing. No hidden fees. Cancel anytime.

Starter

Everything you need to begin your C3 journey.

£ 29 /mo
  • Full gym floor access
  • 2 group classes / week
  • Fitness assessment
  • Locker room & showers
  • Personal training sessions
  • Nutrition coaching
  • Body composition scans
Get Started

Elite

Unlimited access. Dedicated coach. Zero compromises.

£ 99 /mo
  • Full gym floor access
  • Unlimited group classes
  • 4 PT sessions / month
  • Weekly body scan
  • 1-on-1 nutrition coaching
  • App & progress tracking
  • Priority booking + guest passes
Get Started

All plans include a 7-day free trial. No credit card required to start.

Your Coaches

Certified, experienced, and genuinely invested in your success.

Marcus Reid - Head Coach

Marcus Reid

Head Strength Coach

10 years coaching elite athletes and beginners alike. CSCS certified with a background in competitive powerlifting.

Powerlifting Strength Mobility
Priya Nair - Cardio Specialist

Priya Nair

Cardio & HIIT Specialist

Former marathon runner turned HIIT coach. Certified in sports nutrition and functional movement. High-energy, results-focused sessions.

HIIT Running Nutrition
James O'Connor - Conditioning Coach

James O'Connor

Conditioning & Athletic Coach

Specialist in sport-specific conditioning, plyometric programming, and metabolic training. Works with amateurs to semi-professionals.

Athletic Performance Plyometrics Sport S&C
Sophie Chen - Wellness Coach

Sophie Chen

Yoga & Recovery Coach

500hr certified yoga instructor and movement therapist. Specialises in recovery programming, injury rehab, and mindfulness-based training.

Yoga Recovery Rehab

What Our Members Say

"I've been at C3 for 14 months and dropped 22kg. The coaches actually care about your progress — Marcus checks in every single week. Best investment I've ever made."

DK
Daniel K. Member since 2023

"Came in knowing nothing about lifting. Within 3 months I had my first 100kg deadlift. The programming is smart and the community keeps you coming back."

TW
Tom W. Elite member

"Sophie's yoga and recovery sessions have completely changed how I train. I'm stronger, more mobile, and no longer dealing with the back pain that had plagued me for years."

AN
Amelia N. Member since 2022

"As a competitive footballer, James' conditioning programme has genuinely taken my performance to another level. The sport-specific approach is exactly what I needed."

RB
Ryan B. Semi-pro footballer

"Switched from a big chain gym and the difference is night and day. Equipment is excellent, it's never overcrowded, and the staff know your name on day one."

LC
Laura C. Starter member
C3 Fitness training

Your First Week is Free

No commitment. No credit card. Just show up and see why 2,400+ members chose C3.

Claim Free Trial

Built to Perform

12,000 sq ft of premium training space, maintained to the highest standard.

Free Weights Zone

Full Olympic platform setup, dumbbells to 60kg, cable systems and specialty bars.

Cardio Suite

60+ treadmills, bikes, rowers and cross-trainers — all with personal entertainment screens.

Group Studio

Dedicated 3,000 sq ft studio for classes, with sprung flooring and professional sound.

Recovery Zone

Ice bath, sauna, stretching area and foam rolling station for optimal recovery.

Premium Changing Rooms

Spacious, hotel-quality changing rooms with secure lockers, towels and amenities.

Nutrition Bar

Post-workout shakes, healthy snacks and hydration options available throughout the day.

Start Your Journey

Fill in the form and one of our team will be in touch within 24 hours to arrange your free trial week and initial consultation.

Location 14 Performance Way, Fitness Quarter, London, EC1A 1BB
Phone +44 20 7946 0958
Email hello@c3fitness.co.uk
Hours Mon–Fri: 6am–11pm · Sat–Sun: 7am–9pm
Thanks! We'll be in touch within 24 hours.