OUR ROOTS & REBEL SPIRIT

In 2014, Sol Gilbert and Alan McGuinness ignited a fitness revolution with the launch of Underground Gym in Brighton. Since then, we’ve expanded to Newhaven and Tunbridge Wells, building a community where fitness and friendship thrive. Named ‘Best Independent Gym on the South Coast’ in 2019, we’re committed to continuously elevating your fitness experience.

Founder
Alan McGuinness

Experienced Company Director with a demonstrated history of working in the health wellness and fitness industry. Skilled in Crisis Management, Negotiation, Leadership, Accountability, Leisure Industry, and Management. Strong business development professional with a Master's degree focused in International Relations and Affairs from University of Sussex.

Founder
Sol Gilbert

Sol Gilbert, a notable figure in British MMA, transitioned from fighter to coach and entrepreneur. With a professional MMA record of 9-5-1 and an amateur boxing record of 33-9-2, Sol founded ZT Fight Skool, producing top-tier fighters. He expanded his fitness empire with Underground Gym, catering to diverse clientele, and Coached, a wellness space. Sol’s online coaching business is a six-figure success. Integral to his journey is his wife, Donna Poplett. A father of three, Sol balances family life with his professional endeavors, inspiring many with his dedication and resilience.

JOIN OUR CREW

Passionate about fitness and ready to make a difference? We're looking for enthusiastic individuals to inspire and support our members on their fitness journeys.

Our team is the heart of our gym, and we’re always on the lookout for talented people ready to contribute to our community. Think you've got what it takes?

PERSONAL TRAINERS

your partners in progress

At Underground Gym, our personal trainers are key to your fitness journey. We handpick each trainer for their expertise and ability to help you reach your goals. Whether you want to bulk up, slim down, or master a skill, they’re the experts you need. Ready to meet the team that will transform your workouts?

Outstanding Support
for Your Fitness Journey

At our gym, we’re dedicated to supporting your fitness journey. Our team provides personalised guidance and expert advice to help you achieve your goals and make the most of every workout.

3000+
Total Clients
7780
Muscle Increased
25+
Expert Instructors
10+
Years in Operation

JOIN THE UNDERGROUND

WHERE RESULTS AREN’T JUST PROMISED—THEY’RE INEVITABLE

Step into the top-rated realm of Underground Gym, where we’re all about real gains, real guidance, and real grit. Our lineup spans from strength building to a vibrant fitness community. Become a member and start seeing the results that only the Underground can deliver.

Ready to transform?

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Join
Flexible Membership
No Hidden Fees