Built for swimmers. Built for the long term.

Nathan Oxford is a qualified strength and conditioning coach and elite athlete with a background in swimming and powerlifting. He’s broken the British Junior Record in backstroke swimming and won the World Masters Swimming Championships, setting a competition-best performance record.

Now competing in Powerlifting, Nathan represented England at the Commonwealth Powerlifting Championships, winning gold in bench press and placing 4th at the 2023 European Bench Press Championships, where he also broke the North Midlands Bench Press record (M1, 105kg category).

A Masters graduate (with distinction) in Strength and Conditioning, Nathan works with sports teams, including Swim England, delivering specialised strength programs at youth training camps and to masters swimmers and clubs.

John Rothery is a registered osteopath, qualified Physician Associate, swimming teacher and coach, combining over 12 years of clinical experience with a lifelong passion for swimming.

Registered as an osteopath since 2014, John specialises in helping individuals improve their health, mobility and physical well-being through personalised care. In March 2026, he further developed his clinical expertise by qualifying as a Physician Associate at Swansea University.

A competitive Masters swimmer, John has competed with Masters Swimming Australia and at World Masters events. In 2026, he completed an English Channel relay and is now preparing for the ambitious Arch to Arc endurance challenge in August 2027.

Combining clinical knowledge, coaching experience and personal sporting achievement, John brings a unique understanding of the demands of swimming, recovery and long-term physical performance to OXOLT.

Robbie is a performance nutrition coach specialising in supporting swimmers and athletes to optimise energy, recovery, and body composition.

He holds a Level 4 qualification in Nutrition and has experience working with both amateur and professional athletes across endurance, sprint, and high-intensity sports.

Robbie applies evidence-based principles within real-world training and competition environments, helping athletes structure their nutrition to support performance, recovery, and consistency.

His work spans endurance, sprint, and high-intensity sports, with experience supporting athletes through structured nutrition phases including competition preparation and optimising body composition while maintaining performance.

Robbie has a particular interest in swim-specific nutrition and fuelling strategies that support consistent training, effective recovery, and performance on race day.

James Warrener is an experienced swimming coach and aquatics professional with over 16 years of coaching experience and a proven track record of helping swimmers achieve success at county, regional and national levels.

Throughout his career, James has worked with swimmers of all ages and abilities, developing athletes, supporting club growth and mentoring fellow coaches. His coaching achievements include guiding swimmers who have gone on to become National and British Champions at both age-group and Masters levels.

James has also designed and delivered swimming training programmes for athletes competing in a range of multisport events, helping them develop their performance and work towards their goals in the water.

Alongside his coaching career, James works as the Regional Aquatics Development Officer for Swim England London, supporting the development of swimming clubs, coaches, volunteers and participation opportunities across the region.

Passionate about athlete development, coach education and the wider aquatics community, James is committed to creating opportunities that help swimmers of all abilities improve, achieve their potential and enjoy long-term participation in the sport.