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InBody Body Composition Testing
in London

Stop guessing and start measuring. BTX Body Transformation offers professional InBody body composition testing in Hampstead, giving you an accurate breakdown of muscle mass, body fat percentage and more in under a minute.

5.0218 Google reviewsFree 15 minute callNo sales pressure
500+
Body transformations
5.0
218 Google reviews
InBody
770 medical grade scans
1:1
Never shared sessions
7 days
Open 6am to 10pm
The BTX studio from the front: reception counter, warm pendant lights and the rig behind

InBody Testing

What Does an InBody Scan Measure?

An InBody scan measures your skeletal muscle mass, body fat mass, body fat percentage, segmental muscle balance and basal metabolic rate. It is fast, non invasive and gives you a precise picture of your body composition.

InBody Testing

InBody Testing at BTX

01

Why Body Composition Beats the Scale

The bathroom scale cannot tell the difference between fat and muscle. InBody testing shows whether you are losing fat and gaining muscle, which is what really matters for your health and how you look. It is the perfect companion to our weight loss and strength training programmes.

02

Track Your Progress Over Time

Regular scans let you and your coach track real progress, adjust your programme and stay motivated with objective data. It is one of the most powerful tools for accountability.

Why BTX?

A gym rents you space.
We deliver a result.

Lasting change needs a programme, not drop in workouts. Everything at BTX is built around your data, your schedule and a coach who is with you for every rep.

A commercial gym
  • A busy gym floor shared with other members
  • No way of knowing the standard of the personal trainer you get
  • You rent space and equipment
  • A generic plan, or no plan at all
  • Progress judged by the bathroom scale
  • No blood work, no clinical oversight
  • No gut microbiome testing
  • Generic supplements sold at the counter
  • Restrictive diets you can't stick to
  • Motivation fades by week 3
The BTX method

We work with you, not against you.

  • A small, private studio: no other members and no distractions
  • Hand selected coaches, each trained personally by James Cooper in the BTX system
  • A dedicated personal trainer with you for every 60 minute session
  • Periodised strength and conditioning programming built from your scan and movement assessment
  • InBody 770 scans every 4 weeks: body fat, muscle and metabolic rate measured
  • Personalised blood work with Dr Matt Milner (A&E consultant)
  • Gut microbiome testing, the foundation most personal trainers ignore
  • Nutrition and supplementation protocols designed by James Cooper, BSc Nutrition, King's College London
  • Nutrition built around your lifestyle, food and schedule, never restrictive
  • Coach led accountability, session after session

How it works

From first call to
first result

01

Book your free strategy call

15 minutes with a BTX coach to talk through your training history, health, goals and schedule. No sales pressure.

02

Get scanned and assessed

Your InBody 770 scan measures body fat, skeletal muscle and metabolic rate, alongside a full movement assessment.

03

Start your 12 week programme

Periodised training and realistic nutrition, with a rescan every 4 weeks, so progress is measured, not guessed.

Client results

Real people.
Measured results.

★★★★★
“I am halfway through my 12 week program and have already dropped 5% in body fat and added muscle.”
Moritz12 week programme · Trustpilot
★★★★★
“I have been training with Justin for over a year and am blown away with the result. Justin and the team really know their science.”
Jean-PhilippeClient for 1+ year · Trustpilot
★★★★★
“The team at BTX supported me in getting my fitness and strength back. Justin is incredibly focused and committed.”
ShivaStrength and fitness · Trustpilot

Free strategy call

Speak to a coach,
your way.

  • Free, with no obligation
  • A BTX coach, never a salesperson
  • A call back or a set time, you choose
Quickest
Option 1

Request a call back

Leave your name and number and a BTX coach will ring you. No diary to check, no slot to commit to.

About 30 seconds · we call you
Request a call back
Option 2

Pick a time now

Know when suits you? See the coaches' live availability and lock in your call straight away.

Live diary · instant confirmation
Can't see a time that works?Call 020 8138 9413WhatsApp us

FAQ

Questions,
answered.

Still unsure if BTX is right for you? Ask us directly. We reply fast on WhatsApp.

Training at BTX is priced as a membership, not per session, because lasting results need a programme rather than drop in workouts. We match the plan to your goals on your free strategy call. Most clients train 2 to 4 sessions a week.

Most clients see measurable changes in body composition within 4 to 6 weeks of following their programme consistently. We check it with an InBody 770 rescan every 4 weeks.

No. We don’t prescribe restrictive meal plans. Your nutrition is built around your lifestyle, food preferences and schedule, so it lasts beyond the 12 weeks.

Yes. We work with clients managing type 2 diabetes, hypothyroidism, osteoporosis, high blood pressure, cardiac conditions and recovery after surgery.

Every clinical case at BTX is reviewed with Dr Matt Milner, A&E consultant and our in-house physician. He oversees blood work, interprets results in the context of your training, and liaises directly with your GP or specialist where appropriate.

This clinical oversight is one of the biggest reasons clients choose BTX over a conventional personal trainer. Most PT studios cannot offer this.

Free strategy call

Book Your InBody Scan

Leave your details and a BTX coach will call you for a free 15 minute strategy call. We’ll map your goals, your schedule and the plan that gets you there.

  • Free, with no obligation
  • Speak to a coach, not a salesperson
  • Limited 1 to 1 slots each month
Request a call back

Rather pick a time yourself? See available times
Prefer to talk now? 020 8138 9413 · WhatsApp