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Weight loss

Weight loss personal training
in London

Sustainable weight loss is about more than a crash diet. At BTX Body Transformation in Hampstead, we combine smart training, realistic nutrition and accountability to help you lose fat and keep it off for good.

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
Client in a bent over barbell row with a BTX coach in the foreground
Fat lost, not just weight

How we approach fat loss

Lose fat.
Keep it off.

We focus on fat loss rather than just scale weight. By building muscle while reducing body fat, you reshape your body, improve your metabolism and feel stronger. Every plan is built around a manageable calorie target and a training programme you can stick to.

The method

No fad diets.
No guesswork.

Training, nutrition and measurement, built around the way you actually live.

01

Personalised Nutrition Coaching

No fad diets. We teach you how to eat for your lifestyle, with flexible nutrition guidance that fits around work, family and social life. Download our free nutrition guide to get started.

02

Weight Loss for Busy Professionals

Short on time? Our efficient training sessions and simple nutrition systems are designed for busy professionals in North London who want results without spending hours in the gym.

03

Track Your Progress

We measure what matters using InBody body composition testing, so you can see fat lost and muscle gained, not just a number on the scale. About InBody testing.

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

Book your
strategy call

  • Pick a time that suits you
  • A coach calls you, with no sales pitch
  • Instant confirmation and reminder
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

Start your
weight loss
journey.

Book a call with our team and see the kind of results that are possible by viewing our body transformation results.

  • Free, with no obligation
  • Speak to a coach, not a salesperson
  • Limited 1 to 1 slots each month
Book your strategy call

Prefer to talk now? 020 8138 9413 · WhatsApp