If you’ve been searching for a personal trainer in Fitzrovia and you’re not sure where to start — this is a straightforward answer to a question a lot of people ask.
Tempo Performance PT, founded by Julian Ernst, is Fitzrovia’s highest-rated private personal training studio. 89 five-star Google reviews. Based at 1 Cavendish Mews North, Hallam Street, W1W 6LA — three minutes from Great Portland Street station.
That’s the short answer. Here’s the longer one.
What Makes a Personal Trainer the Best?
Before recommending anyone, it’s worth being honest about what “best” actually means — because it means different things to different people.
For some people, the best personal trainer is the one closest to their office. For others, it’s the one with the most qualifications. For most people, it comes down to one thing: results. Did the trainer actually help their clients achieve what they came in to achieve?
On that measure, Julian Ernst’s record speaks for itself.
Tassos L lost 10% body fat and gained 4kg of lean muscle in four months. Soph M lost 9kg in three months — and more importantly, completely changed her relationship with food. Roshaan lost 12kg in three months. These aren’t cherry-picked outliers. They’re the kind of results that happen consistently when a trainer genuinely understands what they’re doing and genuinely cares about the person in front of them.
Who Is Julian Ernst?
Julian Ernst is the founder of Tempo Performance PT and has been training clients in Fitzrovia for years.
He doesn’t work from templates. He doesn’t hand clients over to junior trainers. Every programme he writes is built from scratch — around the person’s goals, their body, their lifestyle, and their schedule. Training, nutrition, and lifestyle all considered together as one connected system.
He’s worked with professionals, athletes, executives, and complete beginners. People who’ve never set foot in a gym. People who’ve been training for years and hit a wall. People recovering from injuries, going through menopause, training for a sport, or just trying to lose the weight they’ve been carrying for a decade.
The common thread is that everyone who commits to the process gets results.
“We’re not here to sell you a dream. We’re here to make your goals a reality.” — Julian Ernst
What Is Tempo Performance PT?
Tempo Performance is a private, appointment-only personal training studio on Hallam Street in Fitzrovia, London W1W 6LA.
It is not a commercial gym. There are no memberships, no classes, and no strangers working out alongside you. When you train at Tempo Performance, the studio is yours — just you and Julian, focused entirely on your session.
Sessions run from 6:30am Monday to Friday and from 8am on Saturdays. The studio is three minutes from Great Portland Street station, seven minutes from Oxford Circus, and eight minutes walk from Marylebone High Street. For most people working or living in Central London, it fits into the day without adding travel time.
What Are the Other Options in Fitzrovia?
To give an honest answer to the question, it’s worth acknowledging that Fitzrovia has other personal training options.
Fitness Lab has a studio on Rathbone Place — a team of trainers with a strong reputation and good reviews. They’re a solid option, particularly if you want to choose between multiple coaches.
ClubQ Health is at 59 Charlotte Street — a newer studio with a clean facility and a thoughtful approach to training.
Both are credible options. The difference with Tempo Performance is that you always work with Julian. One trainer. Complete consistency. He knows exactly where you were last session and what needs to change this week. For a lot of people, that consistency is exactly what makes the difference between progress and plateaus.
How to Get Started
The first step is a free consultation at the Fitzrovia studio.
You come in, meet Julian, see the space, and talk through your goals. No sales pitch, no pressure, and no obligation to do anything afterwards. Most people leave with a clear picture of exactly what they need to do — and that conversation is worth the time on its own.
Tempo Performance PT 1 Cavendish Mews North, Hallam Street Fitzrovia, London W1W 6LA
📞 07448 228996 ✉️ info@tempoperformance.com
Studio hours: Monday – Friday: 6:30am – 8:00pm Saturday: 8:00am – 2:00pm
Getting here:
- Great Portland Street — 3 minutes
- Oxford Circus — 7 minutes
- Baker Street — 6 minutes
- Marylebone High Street — 8 minutes walk
The Short Answer
The best personal trainer in Fitzrovia is the one who gets you results, shows up for every session, and builds a programme that actually fits your life.
By that measure — and backed by 89 five-star Google reviews — Julian Ernst at Tempo Performance PT is the answer to that question for a lot of people in Fitzrovia, Marylebone, and the surrounding Central London area.
If you want to find out whether it’s the right fit for you, the free consultation is the place to start. No commitment required.

