Build habits that last! 21 classes in 21 days for £160 – Across Barrecore, Boom Cycle, KOBOX, Reformcore, and Triyoga. Starts 13 Jan!

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Feel the Reformcore difference

A core-driven workout, elevated by science and precision

Reformcore isn’t just another fitness class—it’s a full-body transformation. 


Our core-driven workouts are designed to create lean, toned muscles, improve posture, and redefine your strength. With each session, you’ll push your limits, feel empowered, and leave feeling unstoppable.

Start strong with our intro offers

1 class

Exclusive to new clients only

£35 / class

Valid for 1 month

3 classes United Fitness Intro

incl. 3 classes at any UF studio (KOBOX, Boom cycle, Barrecore & Reformcore)

£15 / class - £45 for 3 classes

Valid for 14 days

The core of Reformcore: Power and precision

Transformative results

Our Reformer Pilates combines precision and intensity to reshape your body, building leaner, stronger muscles that last.

Efficient workouts

Smart sequencing maximizes every second, building strength and endurance faster than traditional workouts—no time wasted.

Confidence you can feel

More than a workout, Reformcore builds unshakeable confidence, empowering you to face every challenge feeling your strongest.

Strength redefined

Our powerful workouts push beyond the basics, conditioning your mind and body to feel unstoppable.

  • “Unlike other reformer classes where you’re mostly lying down, Reformcore gets you up and moving, and also adds dumbbells - so you’re sure to break a sweat.”

  • “The classes may be testing, but the experience is meditative and, for a fleeting moment, relaxing, with guided meditation bookending fifty minutes of strength work and stretching.”

  • "As a former dancer, I expected an easy class, but it was one of my toughest yet—with slow, deep movements that revealed areas of my fitness needing work and helped restore flexibility I’d lost over the years."

  • “Reformcore is perfect if you only have a couple of hours a week to exercise but you want to get stronger quickly.”

Why you’ll love Reformcore

Feel the burn, love the results

From the first class, feel the intense burn that shapes your body and uplifts your spirit. Reformcore’s dynamic approach delivers visible results that keep you coming back.

Confidence inside and out

Every session is a step toward feeling your best. Reformcore builds inner strength and outer confidence, empowering you at every life stage.

Supportive community

Join a community that celebrates every win. Train with people who motivate, inspire, and lift you higher in every workout.

Unapologetically powerful

This is more than fitness—it’s about embracing your power. Reformcore challenges you to push boundaries and redefine what you’re capable of.

What people say about us

    - Emma Gonzalez

    - Emma Gonzalez

google
Clean studio, extremely kind and patience staff - I really enjoyed my first time here and will be coming back!
google
I absolutely LOVE their classes (especially Holly’s Monday morning class - 10/10 every time), it was always challenging but fun, the vibe was always great, honestly best part of my morning! ((Unfortunately an injury - not obtained during the class - took me out for the past few months, but I cannot wait to get back to it as soon as I can!))
google
I love this Pilates studio, the bathroom facilities are amazing with hair straighteners, dryers, a lot of products etc. I just did a class with phoebe wong and she is definitely my favourite and will be going back to her. She’s so lovely!
google
I am on a holiday to the UK for a month and was looking for a place to continue my reformer sessions. I came here for 4 classes and I enjoyed each and every single one of it. I had 4 different instructors, and all of them were very professional and attentive.

The place is clean, shower rooms are clean and equipped as well. Staff are really friendly and sweet.

If I ever comeback to the UK, I will definitely come back here for my sessions.
google
Love these classes! Everyone is very sweet and supportive. Especially big thank you to Arabella for being so positive and smiling
google
Reformcore: The best group Pilates reformer classes to be found in Marylebone/Mayfair by a long mile! Small classes with 6 beds max. The instructors are always super friendly and informative. It is not for the faint hearted! But the results are worth it! They absolutely start bang on time, and if you are late you won’t be let in. The changing room is mixed gender/sex. Lovely toiletries and shower available. Honestly 10/10 and would highly recommend their classes.
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United Fitness Membership

Enjoy unlimited access to 16 premier London studios locations, offering a mix of Barrecore, Boom Cycle, KOBOX, Reformcore, and Triyoga classes.

See benefits

Unlimited classes Access 16 premier studio locations across London

Diverse workouts Reformer Pilates, Yoga, Barre, Boxing HIIT, Cycling and more

Best value 12 months of access

Flexible Pause your membership up to 4 times a year

From £12.67 / class

Unlimited classes - £225 / month

Find out more

Frequently asked questions

  • What is Reformcore?

    Curated for power, strength and core-fitness, Reformcore elevates the Reformer Pilates experience to be more efficient and effective than ever. Reformcoreworks you harder, using state-of-the-art Reformer Pilates machines and equipment to build muscular endurance and strength.

  • What is the difference between Pilates and Reformer Pilates?

    There are two main types of Pilates – mat work Pilates and Reformer Pilates. Both are based upon the premise of controlled movement against some form of resistance. In mat work classes, all you’ll need is yourself and a mat (gravity will provide the resistance). In Reformer Pilates classes, you are based on the reformer bed and use various pieces of spring-based equipment for additional resistance. 

    Both mat and equipment Pilates, when practised with consistency, will improve your strength, coordination and mobility. There are many health benefits, such as injury prevention and improved recovery and performance for those who are doing sports training or practising yoga. 

  • What’s the difference between Reformcore and regular Reformer Pilates?

    Reformcore is a high-energy class with playlists designed to energise you whilst bringing your mind to laser focus resulting in a kind of meditative state. In Reformcore, you will be working to your maximum for most of the class using lots of repetition to build muscular endurance and strength.This format uses tiny isometric contractions at the deeper part of full range movements to isolate and strengthen muscles. We top off each section with a finisher to get the most out of our muscles each time.

  • What can I expect from a Reformcore class?

    This is a fast-paced class that delivers a deep-burn and a big endorphin in the end. Expect to get your heartrate up early in the class feeling immediately challenged.

  • What is Reformer Pilates good for?

    Reformer Pilates offers a full suite of physical health and mental wellbeing benefits, including: 

    • Improved overall muscle balance in the body and creates a long and lean muscle tone 
    • Stress reduction and detoxification 
    • Improved stability and alignment of the major joints in motion, reducing occurrences of injuries 
    • Promoting a more efficient and supportive core 
    • Encouraging efficiency of movement and improves performance of day-to-day movement and sports 
    • Improving the function of the lungs and circulation 
    • Aiding the prevention of certain health conditions 
    • Focuses on movement and breath, encouraging meditative states 
    • Increases movement awareness, resulting in safer use of the body and fewer injuries 
    • Better alignment, posture and more efficient use of the body 
  • Is Reformcore good for beginners?

    Anyone can come to the class however, this is a fast-paced, dynamic Reformer Pilates class so it is best suited for anyone who has used a reformer machine before. At this time we are unable to admit anyone who is pregnant due to health and safety reasons. 

Important update

You can buy memberships and passes here as usual. For now, all class bookings are done through our app. Thank you for your support as we work to improve your experience.

Download our new United Fitness app for iPhone and Android to book Boom Cycle, KOBOX, Barrecore, and Reformcore—all in one place.

21-day challenge alert!

21 days, 21 classes, 5 brands! Smash your 2025 fitness goals for just £160. Starts 13 Jan!