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features

HCM People: Sol GilbertCo-founder: Underground Gym

It’s our goal to launch two more self-funded clubs in the next three years. After that we’re open to anything: mergers or a private equity acquisition

Published in Health Club Management 2019 issue 4
Sol Gilbert
Sol Gilbert

What is your backstory?
I’m an ex-professional MMA fighter and have been in the industry since I was a teenager, first with a gym in Brighton, then Courtney’s in London and Dragons back in Brighton. After that, I went on to launch my own martial arts school.

In 2014, I teamed up with my business partner, Alan McGuinness and we expanded my gym, so members could do their strength and conditioning work with us. At the same time we rebranded to Underground Gym, so we would be perceived as less of a fight school – which was intimidating to some people – and attract a more diverse crowd.

What’s the Underground Gym brand all about?
We have three equal parts. Combat, comprising MMA, boxing, Brazilian Ju Jitsu and Muay Thai. Strength training with free weights and plate loaded equipment and power and Olympic lifting. Finally, we offer conditioning with disciplines like Parkour and calisthenics.

The mix of these three aspects means the gym floor is not as ‘alpha’ as bodybuilding gyms and our members train across a number of disciplines. Our USP is the community we create at each club, which is largely down to our staff, who are all former professional athletes – their personalities create the atmosphere and DNA of the brand.

Do all three sites offer the same?
Each site has been slightly bigger and more costly! Brighton, the original flagship site, offers the core facilities. Newhaven was the second site and is slightly larger, with a sauna and a group exercise studio. Tunbridge Wells is the largest site and has a Fit 3D body scanner, MMA Octagon, a Parkour area and Eat Naked restaurant.

What’s the membership model?
Gym membership is £39 a month, with a £20 joining fee which gets waived for certain groups, such as single parents or service personnel. Gym and fitness classes are £49 a month and gym and the more specific classes, such as Olympic lifting or Parkour, are £59 a month.

There’s also a pay-as-you-go option which costs £9.99. We’ve just developed a small group training package to help people to get better results without the expense of PT. This starts at £12.

Who are your members?
A large proportion are millennials who come before and after work. But we do have more 40-50-year-olds coming mid-morning and there’s about a 60/40 split between males and females.

What have been the main challenges with getting the brand up and running?
We’ve self-funded, so sometimes that’s been stressful. Finding the right sites and the right staff is a challenge.

As we now have multiple locations, the main goal has been to ensure we offer the same experience across all three and that they run efficiently, offering the same quality experience – even if Alan and I are only in the club once a week.

To do this, we’ve created a more formal staff structure, with managers and supervisors, to make sure everyone is singing from the same hymn sheet.

What do you look for in a site?
We look for industrial units in residential areas, with ample parking and supportive councils. Our aim is to own the south coast of the UK, so Tunbridge Wells was further north than we’d originally planned, but it was such a good location that we had to go for it.

Retailers like John Lewis and Marks & Spencer and showrooms for Bentley and BMW are within a kilometre of the club in Tunbridge Wells – it’s such an affluent area, we thought if we can’t make a gym work here, we might as well give up!

It’s an old gymnastics facility, so loads of the infrastructure was already in place, including a foam pit, which has allowed us to create a Parkour, street-running park.

We opened on 23rd November after a 30-day turnaround, adding a restaurant, widening the reception area and bringing in new kit from Core Health and Fitness, Carbon Claw and Xenios.

What are your future plans?
It’s our goal to launch two more self-funded clubs within the next three years and we’re looking for sites in Worthing and Eastbourne. After that, we’re open to anything: mergers with other chains or a private equity acquisition.

What are your predictions for the health and fitness industry?
More focus on boutiques and small group training. I also think people will get fed up of data and technology and want workouts to be more simple. There will be more cross training, but less club hopping – people will get bored of going to different places because they won’t build a community. So, I think we’ll see more ‘clubs within a club’, offering an interesting mix of facilities.

Sign up here to get HCM's weekly ezine and every issue of HCM magazine free on digital.
Alan McGuinness
Alan McGuinness
Gilbert and McGuinness look for industrial units in residential areas
Gilbert and McGuinness look for industrial units in residential areas
The Underground Gym offers a combination of combat, strength and Parkour/calisthenics
The Underground Gym offers a combination of combat, strength and Parkour/calisthenics
https://www.leisureopportunities.co.uk/images/imagesX/156873_625136.jpg
Underground Gym's co-founder, Sol Gilbert, talks about breaking the rules with a new gym model
Sol Gilbert, co-founder: Underground Gym ,Sol Gilbert, Underground Gym, combat, strength, Parkour
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features

HCM People: Sol GilbertCo-founder: Underground Gym

It’s our goal to launch two more self-funded clubs in the next three years. After that we’re open to anything: mergers or a private equity acquisition

Published in Health Club Management 2019 issue 4
Sol Gilbert
Sol Gilbert

What is your backstory?
I’m an ex-professional MMA fighter and have been in the industry since I was a teenager, first with a gym in Brighton, then Courtney’s in London and Dragons back in Brighton. After that, I went on to launch my own martial arts school.

In 2014, I teamed up with my business partner, Alan McGuinness and we expanded my gym, so members could do their strength and conditioning work with us. At the same time we rebranded to Underground Gym, so we would be perceived as less of a fight school – which was intimidating to some people – and attract a more diverse crowd.

What’s the Underground Gym brand all about?
We have three equal parts. Combat, comprising MMA, boxing, Brazilian Ju Jitsu and Muay Thai. Strength training with free weights and plate loaded equipment and power and Olympic lifting. Finally, we offer conditioning with disciplines like Parkour and calisthenics.

The mix of these three aspects means the gym floor is not as ‘alpha’ as bodybuilding gyms and our members train across a number of disciplines. Our USP is the community we create at each club, which is largely down to our staff, who are all former professional athletes – their personalities create the atmosphere and DNA of the brand.

Do all three sites offer the same?
Each site has been slightly bigger and more costly! Brighton, the original flagship site, offers the core facilities. Newhaven was the second site and is slightly larger, with a sauna and a group exercise studio. Tunbridge Wells is the largest site and has a Fit 3D body scanner, MMA Octagon, a Parkour area and Eat Naked restaurant.

What’s the membership model?
Gym membership is £39 a month, with a £20 joining fee which gets waived for certain groups, such as single parents or service personnel. Gym and fitness classes are £49 a month and gym and the more specific classes, such as Olympic lifting or Parkour, are £59 a month.

There’s also a pay-as-you-go option which costs £9.99. We’ve just developed a small group training package to help people to get better results without the expense of PT. This starts at £12.

Who are your members?
A large proportion are millennials who come before and after work. But we do have more 40-50-year-olds coming mid-morning and there’s about a 60/40 split between males and females.

What have been the main challenges with getting the brand up and running?
We’ve self-funded, so sometimes that’s been stressful. Finding the right sites and the right staff is a challenge.

As we now have multiple locations, the main goal has been to ensure we offer the same experience across all three and that they run efficiently, offering the same quality experience – even if Alan and I are only in the club once a week.

To do this, we’ve created a more formal staff structure, with managers and supervisors, to make sure everyone is singing from the same hymn sheet.

What do you look for in a site?
We look for industrial units in residential areas, with ample parking and supportive councils. Our aim is to own the south coast of the UK, so Tunbridge Wells was further north than we’d originally planned, but it was such a good location that we had to go for it.

Retailers like John Lewis and Marks & Spencer and showrooms for Bentley and BMW are within a kilometre of the club in Tunbridge Wells – it’s such an affluent area, we thought if we can’t make a gym work here, we might as well give up!

It’s an old gymnastics facility, so loads of the infrastructure was already in place, including a foam pit, which has allowed us to create a Parkour, street-running park.

We opened on 23rd November after a 30-day turnaround, adding a restaurant, widening the reception area and bringing in new kit from Core Health and Fitness, Carbon Claw and Xenios.

What are your future plans?
It’s our goal to launch two more self-funded clubs within the next three years and we’re looking for sites in Worthing and Eastbourne. After that, we’re open to anything: mergers with other chains or a private equity acquisition.

What are your predictions for the health and fitness industry?
More focus on boutiques and small group training. I also think people will get fed up of data and technology and want workouts to be more simple. There will be more cross training, but less club hopping – people will get bored of going to different places because they won’t build a community. So, I think we’ll see more ‘clubs within a club’, offering an interesting mix of facilities.

Sign up here to get HCM's weekly ezine and every issue of HCM magazine free on digital.
Alan McGuinness
Alan McGuinness
Gilbert and McGuinness look for industrial units in residential areas
Gilbert and McGuinness look for industrial units in residential areas
The Underground Gym offers a combination of combat, strength and Parkour/calisthenics
The Underground Gym offers a combination of combat, strength and Parkour/calisthenics
https://www.leisureopportunities.co.uk/images/imagesX/156873_625136.jpg
Underground Gym's co-founder, Sol Gilbert, talks about breaking the rules with a new gym model
Sol Gilbert, co-founder: Underground Gym ,Sol Gilbert, Underground Gym, combat, strength, Parkour
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Europe’s largest low-cost operator, Basic-Fit, has agreed to acquire 41 Wellyou clubs in Germany for ...
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Until has opened its fourth club at Canary Wharf, in the iconic YY London building. ...
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Strength training has moved from the margins to the mainstream.
Opinion: Building smarter strength spaces for today’s operators
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Featured supplier news: CoverMe extends matching service to personal training, rewriting how members and personal trainers connect
CoverMe, the global leader in fitness workforce management, today launches CoverMe PT, an on-demand personal training platform that connects the right personal trainer to the right client in under 10 seconds.
Featured supplier news
Featured supplier news: Cornerstone Connect helps Active Blackpool tackle health inequalities
Active Blackpool is deploying Cornerstone Connect, a new digital interface allowing disparate information from multiple systems to be aggregated into one dataset, to support its focus on reducing health inequalities and improving healthy life expectancy.
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Company profile: Fold
Fold is the company behind the UK's leading at home foldable reformer pilates bed, bringing ...
Company profiles
Company profile: Gladstone Software
Gladstone’s software is built to streamline operations, reduce admin burden, and boost engagement. Operators can ...
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Supplier Showcase - Future-proofing
Catalogue Gallery
Click on a catalogue to view it online
Featured press releases
Panatta press release: On Air Fitness chooses Panatta and its Made in Italy fitness equipment
French fitness chain On Air Fitness, with 113 clubs across France and internationally (Spain, Morocco and Portugal) and more than 430,000 members, has chosen to introduce Panatta equipment — a 12-machine circuit from the premium Free Weight Special line —
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ukactive press release: UK Active announces plans for National Fitness Day 2026
UK Active has announced the details of National Fitness Day 2026, with the flagship campaign set to take place on Wednesday 16 September 2026.
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Crown Sports Lockers: Lockers
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Oakworks Inc: Spa and beauty equipment
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Aquaform s.r.l.: Water experiences and hydrotherapy solutions
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Stratford, East London.
Lee Valley Regional Park Authority
Property & Tenders
Y Felinheli, LL56 4QN
Newmark
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The Langham Huntington Pasadena , Pasadena, United States
Diary dates
06-08 Oct 2026
Messe Stuttgart, Stuttgart, Germany
Diary dates
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Diary dates
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Koelnmesse Exhibition Centre, Cologne, Germany
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