Location: Sloane Square (241 Pavilion Road, London, SW1X 0BP)
Reason: KX’s sister gym KXU offers a pay-as-you-go approach with three studios tailored to cater for all needs.
From deadlifts to detoxes, KXU is a seamless blend of group fitness, personal training, spa treatments and a nutrition bar under one roof.
With 10 different class concepts, from Evolve to The Games, Yoga to U-Cycle, KXU has something for everyone to help you build strength, improve cardiovascular fitness and find your flow.
Beyond fitness, there is a state-of-the-art Medi-spa for relaxation, rejuvenation and recovery that offers a vast range of treatments.
Price: Are you sitting down?
An unlimited monthly membership
(which, OK, does include cryo and infrared) is a steep £340.
Looking for just the spa membership? It's yours for £180 a month.
Best for? Those who want a potent, powerful, punchy all-in-one experience. Are U ready?
Best gyms in North London
Third Space: Islington
Where? Islington (15 Esther Anne Place, London, N1 1UL)
Why? Third Space is pioneering training for life.
The luxury gym brand is all about having every element of your training covered, from recovery to injury prevention and perfect form.
Plus, when you join any Third Space gym, you'll be taken through a movement screening to highlight back problems, weak knees and posture alignments.
From this, a bespoke fitness plan is created.
Their Islington branch also boasts 'Little Space', a separate dedicated area for families with a family swimming pool and kid-friendly rig.
If the state-of-the-art gym and changing rooms don't sway you, then how about the wealth of technical classes and top-shelf PTs they've got on the books? Thought so.
How much? £230 across all branches apart from Mayfair, which is £265.
Best for? World-class equipment, top-tier trainers and a family space.
The Gym Group: Wembley
Location: Wembley (11 & 12 High Road, Central Square, Wembley HA9 7AJ)
Reason: Located behind Wembley Central tube station, The Gym Wembley is one of the best in London for its affordability and flexible membership approach.
Open 24/7, The Gym offers state-of-the-art cardio equipment and a selection of classes
Meeting the needs of all levels of experience for the ridiculously reasonable price of just £23.99 per month.
Price: Membership costs £23.99 a month with no contract, while you can currently use the code "save" to save 50% on your first month's membership. Yippee!
Best for? Neat budgets.
Best gyms in South London
Third Space Wimbledon
Location: Wimbledon (4 Queen’s Rd, Wimbledon, London, SW19 8YE)
Reason: Yes, this is the third Third Space gym in our round-up, but with good reason.
The website dubs it a 'world-class wellness space', and WH Fitness Director Bridie can concur.
Besides a multi-functional fitness space with every sort of equipment you could think of (including a recovery zone with full body compression suits and body rollers),
There's individual HIIT, spin and yoga studios, and in our opinion, the two jewels in the crown:
a stunning reformer Pilates studio (unlimited classes are available with every membership), and an elite spa, featuring 3 types of sauna, a steam room, plunge pool, hydrotherapy pools and a 25 m four lane swimming pool.
The gym also hosts over 100 classes per week, after which you can freshen up in the pristine changing rooms, complete with Cowshed toiletries, GHD hair tools and super soft towels.
Price: £220 per month, or £245 a month for access to all Third Space clubs, excluding Mayfair and Islington. It's a lot, we know, but trust us when we say it's not just a gym; it's a full-blown spa.
Best for? A luxury gym experience, with no expense spared.
The Foundry Vauxhall
Where? Vauxhall (Black Prince Community Hub, 5 Beaufoy Walk, London SE11 6HU)
Why? The sense of community at strength-training massive The Foundry is what sets it apart from its competitors.
Whether you're taking part in the gym's famed fitness classes (Strong, Sweat or Combine) or a personal training sesh, trust us when we say you'll feel more motivated than ever before.
'Our 45 minute classes constantly achieve 5* reviews:
no frills, no gimmicks, no tag-backs, and we don't charge extra for DOMS,' the website reads. We concur.
Price: The 21-day challenge, including six small group PT sessions, unlimited classes, movement screening and lifestyle support, is £150.
Best for? A team spirit that accepts no excuses.
One LDN: Fulham
Location: Fulham (Imperial Wharf, 17 The Blvd, Fulham, London, SW6 2UB)
Reason: Choose between personal training, or strength and conditioning classes, and get your resistance training form on track.
If you're new, they advise you to arrive early so you can get your technique right before a session.
If you work one on one, you'll be guided through the state of the art kit, led by some of the best coaches who also have experience of CrossFit and weightlifting for Great Britain.
The gym's expertise is not limited to weights, however, and they have all the other classes and equipment you'd expect from a premium gym-meets-boutique-fitness-studio all under one roof.
Price: £95 per month for a rolling membership, £120 for one month, £29.99 for a 7-day pass, or £15 for one-off use.
Personal training prices on request.
Best for? A big and well-equipped space. No more gym queue etiquette required.
Gym On
Location: Battersea
Reason: If you’re looking for something with less of a chain gym vibe, Gym On may be more of your cup of tea.
It’s an independent, boutique gym with all the equipment you’d want for a standard cardio or strength workout, with the added bonus of group training classes, beauty treatments and coffee, too.
Price: From £60 per month.
Best for? That personal feel.
David Lloyd: Fulham
Location Fulham (Unit 24, Fulham Broadway Retail Centre, Fulham Road, London, SW6 1BW)
Reason: David Lloyd is one of the UK's original leisure clubs, but this branch's £6.5m glow up features new luxury elements that set it apart.
When the club reopens in February, you can unwind in the Spa Retreat with its five experience rooms
Including a Himalayan salt sauna, citrus steam room, ice cave and hydro-pool, or push your fitness limits at the made over gym with updated cardio and strength kit.
Work out with trainers in the new boutique studios at the Studio Hub, or HIIT up (ha!) three zone BLAZE and exclusive Signature classes.
Relax with friends and family - or check your emails! - at the sleek Clubroom and workspace.
Sign up to Fulham or to your nearest club there are over twelve in London to choose from.
Brilliant gyms for both beginners and fitness fans.
Plus, not all gyms in the capital allow you to finish your workout with a swim in a 20m pool.
Price: Available on request
Best for? An all-in-one, ultimate health, wellbeing and fitness destination.
Location Camberwell
Reason: If it’s a good variety of equipment you’re after, you can’t go far wrong with EasyGym’s Camberwell location.
True, you shouldn’t expect Le Labo toilettries in the showers, but it’s a gym that has everything you need to get a solid workout in including free group classes.
Plus, memberships are flexible and it’s open 24/7.
Price: From £17.99 per month.
Best for? A no-frills gym experience.
Best gyms in East London
John Reed: Broadgate
Location: Broadgate (90 Liverpool St, London EC2M 2AT)
Reason: If you're into DJs and strobe lights while you workout, John Reed is the one for you.
The design is like no other:
Treadmills are set in front of Grecian-inspired statues, while the boxing studio is accessible through an LED tunnel, and walls are decorated with murals by local and international street artists.
They also have live DJs spinning records in a booth on the reg.
Price: Choose between the Basic Flex membership for £100, or the Gold Flex
(including towels, wifi and electrolyte drinks) for £120, with a joining fee of £100 (or £50 if you sign up for an annual membership).
Gymbox: Farringdon
Location: Farringdon (12 Leather Ln, London EC1N 7SS)
Reason: Because gym boredom should never be the reason you throw in the towel.
Luckily the Gymbox chain feels more like a nightclub than anything with music from regular DJ sets and neon lighting.
Gymbox Farringdon one of many locations around London really have gone all out:
three-lane sports turf track, huge class space (pictured above), Muay Thai sparring, a fitness frame, combat areas, Olympic weightlifting and a dedicated water rowing area.
Descend down a staircase to the underground location and prepare for the space to blow your mind.
You could easily spend a weekend here trying out all the equipment, but don't leave without having a go at the Aerial Acrobatics (get to know).
Price: Membership with unlimited access to classes starts at £71, with a £99 joining fee, and a day pass for non-members is £20.
Best for? A major choice of facilities, plus neon galore.
Roar Fitness: The City
Location: City (24 Bevis Marks House, London, EC3A 7JB)
Reason: Not your usual transformation gym.
Roar Fitness is the brainchild of three-time Olympian Sarah Lindsay.
Naturally, she takes a sportsmanlike approach to fitness and has sculpted the bodies of everyone from Pixie Lott and Christine Bleakley.
A member of their ex-Olympian team will give you a personalised 12-week fitness and nutrition programme to stick to and, yes, will become "that person" messaging their trainer on WhatsApp.
Price: Your first class is free, then £25/class thereafter.
Best for? An Olympic training experience, from a team of athletes and top-class trainers.
Better: The Greenwich Centre
Where? Greenwich
Why? The Greenwich Centre is an iconic leisure centre boasting high-quality facilities and library services, too.
There’s a gym filled with state of the art equipment, plus two swimming pools and a fitness class programme, too.
Membership prices are reasonable for everything that’s on offer, but some activities cost extra.
How much? From £37 per month.
Best for? A leisure centre experience.
The Great Outdoor Gym Company: Multiple locations
Location: Hackney, with locations all around London
Reason: If you're keen to exercise but would rather not spend all your hard-earned pennies on an actual gym membership, it's time you checked out The Great Outdoor Gym Company.
They are totally free outdoor gyms located in parks in Camden, Westminster, Hackney, the City and more.
Price: Free.
Best for? Well, firstly they're free. And secondly, because they're one of the most eco forward free gym companies around.
For every piece of outdoor gym equipment, they plant a tree.
Sweat for free and save the planet?
Yes, please.