Poseidon Performance
Flagship Studio: Dartmouth
Experience the tranquility of a private studio, free from the distractions of crowded gyms. Our exclusive space is designed to focus entirely on your progress and performance, ensuring a premium fitness experience tailored to your needs.
Poseidon Performance is a private strength and rehabilitation studio
We specialise in helping adults build strength, recover from injury, and maintain long-term independence through structured, 1-to-1 coaching.
This is not class-based training.
There is no guesswork.
And nothing here is generic.
Every session is built around you: your history, your limitations, and your long-term goals.
Whether you’re dealing with ongoing pain, returning from injury, or simply want to stay strong and capable as you age, the focus is always the same:
Move Better - Build strength - Stay Independent.
Why Poseidon Performance Is Different
Most training environments are built around volume.
Ours is built around precision, progression, and long-term outcomes.
1-to-1 Coaching
Every session is delivered on a one-to-one basis. No shared attention, no generic programming, and no being left to figure things out yourself.
Rehabilitation-Led Approach
Training is built around your body, not the other way around. Whether you’re managing pain, recovering from injury, or rebuilding strength, everything is structured to move you forward safely and effectively.
Built for Long-Term Strength and Longevity
This isn’t about short-term results. The focus is on maintaining muscle, joint health, and physical capability for decades, not weeks.
Proven Coaching Experience
Led by Nicholas Martin-Jones, former Royal Marines Commando Physical Training Instructor with over 20 years’ experience in strength, conditioning, and rehabilitation, working with everyone from injured individuals to elite performers.
Private, Purpose-Built Environment
A calm, distraction-free space designed for focused training. No overcrowding, no waiting, and no compromises in how sessions are delivered.
Poseidon Performance specialises in bespoke training and rehabilitation for adults who value their health and independence.
Personalised Training: Achieve your fitness goals with custom coaching that builds strength, improves mobility, and enhances overall wellness.
Rehabilitation & Recovery: Expert-led programs designed to rebuild confidence and strength after injury or surgery.
Longevity & Wellness: Maintain independence and vitality with tailored programs that support active aging and sustained health.
An Exclusive Studio for Your Health and Vitality
Tailored Programs for Lifelong Strength and Independence
From your first session, you’ll experience a level of care and expertise unmatched in the region:
Initial Consultation: A comprehensive assessment of your fitness, mobility, and goals to create a bespoke plan.
Tailored Training Sessions: One-on-one coaching in a private setting, ensuring your program evolves with you.
Ongoing Support: Regular progress tracking and adjustments to keep you motivated and on track.
Supervised Open Gym – Train While You Visit
Staying in Dartmouth and want to keep up your training? Our Supervised Open Gym offers visitors exclusive access to the Poseidon studio—train independently with elite equipment under the supervision of a coach, without booking full personal training. Perfect for tourists, yacht guests, and active couples.
From £25 per session | Couples from £40
Limited slots available – pre-booking only.
What Our Clients Say
Your health and independence are priceless. Experience the Poseidon Performance difference and achieve your goals with bespoke training and rehabilitation tailored to you.
“Poseidon Performance is unlike any gym I’ve ever been to. The privacy, expertise, and results exceeded all my expectations.”
– Vad Pukhau
“Nicholas helped me recover from surgery and return stronger than ever. I can’t recommend his coaching enough.”
Harriet Jellett
Visit Us
Poseidon Performance is conveniently located in Dartmouth, providing a secluded and accessible retreat for clients across the South Hams. Escape distractions and focus on your goals in an exclusive, boutique setting.
The Old Piggery
Little Dartmouth
TQ6 0JR