Hammer Strength
Machine name
One line on why this one earned its square metre.
Plate-loadedMachine names and photos to follow — the brand marks are standing in for now.
Open now
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Nothing on
this flooris filler.
Darkside Gym is a 24/7/365 bodybuilding gym in Gloucester. Every machine here was picked, hunted down or waited for — never ordered off a page to fill a gap.
- Where
- Unit H, Innsworth Technology Park, Gloucester GL3 1DL
- Open
- 24 hours a day, 365 days a year
- Membership from
- £36 a month, or £9 a session
- Contract
- Rolling — cancel anytime
- Minimum age
- 16, with ID if you're under 18
- Parking
- Free, on site — see the FAQ for weekday spaces
Most gyms buy a floor plan. We built a collection.
More than a place to train — a community driven by progress, consistency and respect for the work. No egos, no roped-off zones, no sales pitch at the door. Beginners and competitive athletes on the same floor, and it works.
The floor
Watson, Hammer Strength, Body Masters, Arsenal Strength, Nytram, Magnum, Rogers, gym80 and a dozen more. Filter by what you're training — everything here is on site and free to use, at any hour.
Twenty manufacturers on one floor
Arsenal Strength
Machine name
One line on why this one earned its square metre.
Plate-loaded
Watson Gym Equipment
Machine name
One line on why this one earned its square metre.
Free weights
Magnum Fitness Systems
Machine name
One line on why this one earned its square metre.
Free weights
Cybex
Machine name
One line on why this one earned its square metre.
Cable & pulley
Body Masters
Machine name
One line on why this one earned its square metre.
Plate-loaded
gym80
Machine name
One line on why this one earned its square metre.
Cable & pulley
StairMaster
Machine name
One line on why this one earned its square metre.
CardioWhy people
stay
Kit gets people through the door once. The rest of it is why they're still here three years later.
Access
Open every hour
24/7/365. Members train at 5am, at midnight, on Christmas Day. Nothing is roped off out of hours — you're trusted with the whole floor.
Getting here
Park outside
Free parking on site. No retail-park circling at six o'clock, no ticket machine, no permit. There are a couple of weekday rules — they're in the FAQ.
Fuel
Home of Alpha Neon
Our own supplement range. Order online and collect it at the gym, so there's no waiting in for a parcel.
Room
No egos
It's weights-heavy and it's serious, but nobody here started strong. First session, we'll walk you round it properly.
Not just
the kit
Read the reviews and the same two names keep coming up. That isn't an accident.
Who runs it
Adrian & Lisa
They own it, they're in it, and they're the reason half the reviews read the way they do. Members mention being supported through injuries, plateaus and the bad months as often as they mention the equipment.
Turn up during the day and one of them will walk you round it properly. No clipboard, no tour that ends at a contract.
Made here
Alpha Neon
Our own supplement range — the reason this is the home of Alpha Neon rather than a shelf of someone else's tubs. Order online, or use click and collect and pick it up next time you train.
There's kit to wear as well. The hoodies get mentioned in the reviews nearly as often as the machines do.
Shop Alpha Neon
Membership
Rolling contract, cancel any time. Charged on the 1st of the month — your first payment is prorated.
24/7/365
£36Per month
- Full access, every hour of the year
- Rolling contract, cancel any time
- Nothing on the floor restricted
- App-based door entry
Student
£33.50Per month
- Everything in 24/7/365
- Valid student ID required
- Rolling contract, cancel any time
Joint
£67Per month, two people
- Two members, one direct debit
- Full 24/7/365 access for both
- Rolling contract, cancel any time
Register online before your first visit — including for single sessions and passes. The paperwork has to be completed online and we can't let anyone train until it's done. It only takes a few minutes.
You must be 16 or over to join. Anyone aged 16–18 (or who looks it) will need valid ID — that's our insurer's rule, not ours.
5.0
On Google, across 42 reviews
Not one of them is about the changing rooms.
Been to every gym in Gloucester. This is the best there is.
Best kit in Gloucester and Cheltenham. Especially good for experienced lifters.
Weights focused, an abundance of equipment, and a genuinely good vibe.
Adrian and Lisa support you mentally as well as physically.
Epic gym, best around. Great vibe and a big range of equipment.
Good people, good equipment, good atmosphere. Best of all are the dogs.
Amazing kit, amazing atmosphere, and Adrian genuinely knows his stuff.
Great kit, great atmosphere, great people.
Nothing is restricted. You're trusted to respect the place.
Amazing owners, the best equipment, and good parking.
Questions
The ones we get asked most. Anything else, message us on WhatsApp.
Yes — please register online before you come down, even for a single session or a pass.
There's paperwork that has to be completed online, and we can't let anyone train until it's all done. It takes a few minutes.
Do it at home and you can walk in, scan the door and get straight on the floor.
Head to the signup portal. You'll need a bank card, Link Pay, Google Pay or Apple Pay.
Once you're done, download the app, log in, scan the door and you're in.
If it says you've reached the maximum number of allowed devices, message us. It's a 30-second fix.
Yes. In the app: Menu → Memberships → Add Hold.
In the app: Menu → Memberships → Cancel.
Cancel at least 24 hours before payment is due — that's 00:01 on the 1st of the month.
Parking is free and on site.
Monday to Friday, 9am–4pm, please use the yellow-marked spaces. The spaces outside the cafe become available from 1.30pm.
Outside those hours, any space is fine — just park sensibly. If you end up blocking someone in, let us know.
We do. Message us and we'll talk through what you're after.
16 or over. If you're 16–18 (or look it), bring valid ID. This one's set by our insurance, so there's no wiggle room.
Get in touch first and we'll sort it. We're happy to work with videographers, photographers and creators — we just need to know you're coming.
Come
and see it
Where
Unit H, Innsworth Technology Park
Innsworth Lane, Innsworth
Gloucester GL3 1DL
Innsworth Lane, Innsworth
Gloucester GL3 1DL
Hours
Open 24 hours, 365 days a year.
Parking
Free, on site. Weekdays 9am–4pm, use the yellow-marked spaces — the ones outside the cafe free up from 1.30pm. Any other time, take any space and park sensibly. If you block someone in, let us know.
Talk to us
Photo — the unit from outside, so people recognise it