The Complex Gym - A brand new 12,000 sq ft gym in Kent
We’re based just a few minutes from the A2 in Darenth and open for all training levels; offering flexible memberships, premium equipment and a friendly atmosphere.
About The Complex Gym
Who We AreThe Complex Gym is Kent’s newest training facility, just 5 minutes from the A2 in Darenth and 10 minutes from the Dartford Crossing.
Inside you’ll find 140+ machines from Hammer Strength, Life Fitness, Matrix, Watson, and Nautilus across 12,000sqft of purpose-built space.
Our fully equipped gym offers free parking and a welcoming, inclusive atmosphere.
Free On-Site Parking
Open 7 Days A Week
140+ Premium Brand Machines

Choose Your Membership Plan
Membership PlansWhether you’re looking for a monthly membership plan or just visiting for a day, we’ve got options to suit how you train.
Monthly Membership
£40/ monthly
16+ only. Please read the full Terms and Conditions
- Gym Only
- Minimum 3 Payments
- Monthly Rolling Direct Debit
- £10 Joining Fee
Under 16’s
£30/ monthly
Please read the full Under 16's policy.
- Full Gym Access
- Monthly Rolling Direct Debit
- Proof of ID Required
- Minimum 3 Payments
- Membership for Under 16's
- £10 Joining Fee
Senior Citizen / Blue Light Card
£30/ monthly
16+ only. Please read the full Terms and Conditions
- Full Gym Access
- Monthly Rolling Direct Debit
- Proof of ID Required
- Minimum 3 Payments
- Membership for NHS, Police, Fire Service
- £10 Joining Fee
Take a look inside The Complex Gym
Our GymFrom premium strength and cardio equipment, to functional training and conditioning areas, The Complex Gym has you covered for any type of training. See more of your new gym.
What people are saying
TestimonialsSee what people are saying about The Complex Gym through verified Google reviews and leave us a review while you’re here.
Where we are located
Our LocationJust a few minutes from the A2 and Dartford Crossing, The Complex Gym is ideally located for members from Dartford, Gravesend, Greenhithe and beyond.
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