Meet the Expert Coaches Behind Poseidon Performance

With years of experience in elite performance coaching, rehabilitation, and athlete optimisation, our team is dedicated to helping you achieve your fitness, recovery, and wellness goals.

  • Black and white close-up portrait of a serious bald man with a beard, wearing a dark shirt, against a dark background.

    Nicholas Martin-Jones

    Expertise: Elite Performance Coaching, Rehabilitation, Strength & Conditioning, Officer Training Preparation

    Nicholas Martin-Jones is a former Royal Marines Commando Physical Training Instructor with extensive experience in performance coaching and rehabilitation. Specialising in working with elite athletes, military candidates, and individuals recovering from injury, Nicholas delivers results-driven, personalised programs tailored to each client’s needs. His unique background in high-level physical training ensures a comprehensive approach to fitness, recovery, and overall wellness.

    Train with Nicholas – Schedule a Consultation
  • A black-and-white photo of a woman with long hair taking a selfie in front of a mirror, dressed in an off-shoulder top. In the background, her reflection shows her wearing a dress with a thigh-high slit, standing in a bedroom with a bed and a chair.

    Rosie Jessop

    Specialisation: Strength & Conditioning, Athletic Performance, Rehabilitation, Boxing, Powerlifting

    Rosie Jessop is an accomplished athlete and coach, with extensive experience in powerlifting, boxing, and high-performance fitness. After transitioning from an international-level jockey to excelling as a powerlifter and boxer, Rosie now dedicates her expertise to helping clients achieve their fitness and performance goals. With a focus on strength and conditioning, athletic performance, and rehabilitation, Rosie brings a wealth of personal experience and professional knowledge to her clients at Poseidon Performance.

    Train with Rosie – Schedule a Consultation
  • Black and white photo of a young woman with long hair, wearing a form-fitting top, looking at the camera with a slight smile, standing indoors near a door.

    Madeline Grieveson-Moore

    Expertise: Strength & Conditioning, Musculoskeletal Rehabilitation, Postnatal Recovery, Body Recomposition

    Madeline brings over 8 years of experience in the fitness industry, working with a diverse range of clients from young athletes to older adults seeking to maintain their health, mobility, and strength. Based in Dartmouth, Madeline is deeply passionate about empowering individuals to achieve their fitness and rehabilitation goals, making her a perfect fit for the Poseidon Performance team.

    Focused Session with Madeline
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    Cara Agates

    Expertise: Musculoskeletal Rehabilitation, Sports Massage Therapy, Strength & Conditioning, Functional Movement Restoration

    Cara Agates specialises in musculoskeletal rehabilitation and sports massage therapy, bridging the gap between injury treatment and full physical recovery. With a focus on evidence-based rehabilitation strategies, manual therapy, and progressive reconditioning, Cara designs individualised programs that address pain, restore function, and build long-term resilience. Her clinical approach ensures clients receive structured, professional support throughout every phase of their rehabilitation journey at Poseidon Performance.

    Build long-term resilience with Cara

Why Train with Poseidon Performance Coaches?

Our coaches are dedicated to delivering personalised, results-driven training programs designed around your unique goals.

Expertise Across Multiple Disciplines: Whether you’re training for elite sports performance, recovering from an injury, or aiming for long-term wellness, our coaches have the experience and qualifications to help you succeed.

• Personalised Programs: Every program is customized based on your specific goals, fitness level, and needs, ensuring maximum results.

• Proven Results: Our coaches have a proven track record of transforming clients’ fitness, health, and performance, from athletes to everyday individuals.

• Integrated Approach: We incorporate fitness, recovery, and wellness strategies into every plan, ensuring a holistic approach to health and performance.

Ali Monfaradi

Nicholas helped me reach my fitness goals faster than I thought possible. His tailored approach and attention to detail were key to my success.

Harriet Jellett

Thanks to the expert rehabilitation guidance I received from the coaching team, I was able to fully recover from my injury and regain my strength.”

Ready to Reach Your Full Potential?

Our coaches are ready to help you achieve your fitness, recovery, or performance goals. Get started today!