Been going since it opened, the gym has a great atmosphere and is very social with lots of great people who train there. However I’ve become more disappointed over time with the lack of care over the actual gym itself, it’s almost as if no one is in charge. Most of the weights plates have deteriorated over the last year missing the inner rings so wobble around a lot on the barbell. No one seems to put plates back and there seems to be a lack of plates in general on heavy machines. Whenever I’ve put this forward to anyone at the desk it’s always on “their list to do” but never actually gets done. Also not really any new machines been added over the three years mainly stuff been removed. Like the cage and the parkour area… would also be nice to see more blocks for the community of Olympic lifters as the one set that is there seems to be falling apart. And some cast iron plates for the growing power lifting community!

This is most certainly the best gym I’ve ever used. Every single member of staff is friendly, helpful and encouraging. You are always made to feel welcome and at ease. The equipment is new, clean and there’s a lot of it to choose from. It is well maintained and the whole environment is clean and well laid out. I would recommend this gym to anyone and everyone…

Amazing gym. The staff are great and the members are so friendly. Loads of equipments as the place is massive! Will definitely be coming back. 🙌

Great gym, great staff, only complaints are size of car park and changing rooms. But given the quality of the gym itself and equipment I don't mind this at all. Fairly priced also.

Best gym in Tunbridge Wells! I was trying to find a half decent gym in the local area and spent weeks trying to find one that suits me. As soon as I found this gym I had to start a membership and I have continued to go this gym for months and not had a single problem would recommend for anyone!

Luke and the front of staff team are first class hosts. The gym is always clean and tidy and there is plenty of equipment to go around - I never find myself having to queue. If you want to work out in clean environment that is not pretentious then underground gym is your place to go.

Reminiscent of a bigger much better 80's gym 💪where people train and don't walk about wondering who is lookin at 'em. Good eye candy for the females lol (just saying). Fab sections around the gym including Muay Thai, BJJ, Boxing, Power Lifting to name a few. Could do with more benches or folk to move on after 30 min. I was there nearly 3 hours and couldn't get one, not much area to do floor work... More spin classes please! But all in all the best gym I've been to so far since moving South....

As a newbie to a gym and being a self-conscious middle-aged woman who thought the gym was for younger people I can't rate Underground Tunbridge Wells high enough and I've seen the gym is for all ages. The staff are fabulous, helpful and very welcoming and I have to say all the other gym users are great too which makes a nice atmosphere. The gym itself is spacious, well equipped and clean. I thoroughly enjoy going a few times a week and look forward to seeing the changes as I get fitter and toned.

Easily the best gym in Kent! Have been going since it opened. Awesome staff, plenty of equipment and a great atmosphere! Can't ask for more!

The nicest staff, coaches & people in general. A super welcoming gym & great facilities. They’re always happy to accommodate your requests. I love gyming here as I’m quite introvert everyone’s just doing their own thing 💜

First ever gym I’ve been to and felt fully settled. I genuinely won’t look at moving anywhere else now. The staff are extremely welcoming, the members are respectful and there’s a nice close knit vibe. Great space for functional fitness with an open layout. Amazing variety of equipment, including a rig. The only thing that would make it PERFECT is if they had gymnastics rings from a wall bracket so that you could do muscle ups… the rings are currently on the rig which doesn’t give enough space/height for RMU.

Great equipment, friendly staff (mainly) and well positioned gym. Has plenty of deadlift platforms and squat racks so you're very rarely waiting to do your sets. Good mix of people that attend, so all ages and levels. It's the first gym that I've properly committed to so I think that speaks volumes.

Great gym, staff are excellent, friendly and they listen. If you report something wrong it gets fixed or sorted. Other members are friendly too, keep to yourself or talk to others, it's your choice. The equipment is great, everything you need if you are a beginner or an experienced athlete. Happy to be a member.

It's the best gym I have ever used! There is so much space with all the equipment you will ever need. The staff are incredibly friendly and helpful, and the coaches are absolutely brilliant, too. On top of all this, there is a kickboxing and boxing ring with specialist coaches for a varied amount of martial arts. All in all, the perfect venue 👌

My partner and I joined the Underground gym about 1 year ago. The gym is large and can seem daunting from the outside and 1st few visits but it’s actually the most friendly and well equipped gym in the area. The staff are all very knowledgeable and friendly, always welcome you by name. There is so much equipment you will be spoilt for choice. Lots of weights, strength and weight assist machines, cardio equipment, floor space, calisthenics area, even boxing bags and a ring. Recently we have joined the early mornings circuit class, a small additional charge per month. It’s a fantastic class, every day is different and challenges you which really differentiates the Underground gym. It’s a great gym for all abilities, remember your only competition is you so join and challenge yourself.

Great gym - well equipped and plenty of space. Very clean and tidy. The staff are really friendly and helpful. I train there with my PT Livvy and have been to an early morning strength training class there. Livvy really knows her stuff, full of energy and enthusiasm making it an enjoyable experience.

I have always found gyms to be very daunting being overweight but the staff and environment at underground removed any concerns and self conscious feelings I had. I have been training her with an amazing PT at underground, Fowler Fitness, and she has really helped me understand what does and doesn’t work for my body and goals and has made me feel equipped to exercise when I’m not with her, if there are any concerns or help needed the staff are always attentive and relaxed in their approach to help anyone who needs it. Fantastic gym and would highly recommend

Lovely staff, especially Ben Peers. Lovely guy always looking out for regulars and helping where he can. Gym always looks nice and clean and good variety of equipment all round. I especially like the callisthenics and weight lifting area!

Great gym in a huge space and plenty of equipment. The staff are always welcoming and helpful and the price for what the gym offers is great!

Great gym with a plenty of space and a decent amount of equipment. Decent atmosphere where people just get on with their work out and it isn't flooded with teenagers sitting on equipment for ages. I only really come during off-peak times so can't say how busy it gets. I don't think the "people in gym" counter on the app is always accurate. I reckon they could do with an additional pec fly/rear felt fly machine. Parking is pretty limited but you can park on the street nearby. Admin experience not ideal too... I requested my membership be paused whilst I was dealing with an injury. It as confirmed via email they'd pause it for 2 months but the monthly fee was still taken. Still, probably one of the best gyms in the area. Nearly 5 stars but a few minor improvements would make a difference.

Amazing gym, all the gear you need, amazing friendly staff, and a really nice atmosphere with customers.

Really good gym but needs attention to a few things. For a gym this size it’s getting tatty. Only 2 row machines , one not working the other foot strap too short. Very tatty handles for the cable cross that are broken and ready for the bin. Some of the 20kg plates have had it but still in use. These are only small things that make a difference so hopefully the management take note.

Having been to every gym in the area for a visit or a trial, this is the one for me. Huge, well laid out area with lots of machines and equipment for different training styles. Parking is a bit of an issue, and it can get slightly crowded and the music can be a touch overbearing, but other than that, no complaints.

Amazing facilities with all the equipment you could need. Super friendly and helpful staff. In general a great community and anyone can be part of it for as little as £13 a week! Best gym in the area by far.

Don't advertise or show price on website, force you to fill out equality forms and not upfront about costs. That most likely means everyone at the gym is paying different prices to each other. Still be giving this gym a skip.

*EDIT* The gym used to be so good but went downhill- it is very "Bro" now. Very few classes or variety. All the good staff members have left (i believe only one original member of staff remaining).The atmosphere is totally different- it's a real shame as it was the best gym in the area by far.***** I joined Underground not long after it opened at the beginning of 2019. This is by far the best gym I have ever been to. The atmosphere in the gym is really positive, the classes are varied and fun, there is a huge selection of equipment and plenty of it - no waiting turns! The staff are knowledgeable and friendly and most importantly the community feel at the gym is brilliant. The gym is miles ahead of other gyms in the area.