Claire Marsh

Claire Marsh

Owner & Manager



CrossFit Level 2 Trainer

CrossFit Kids Trainer

CrossFit Gymnastics

REPS Level 3 Personal Trainer

Contact Claire

Instagram @clairemarshuk

About Claire

Claire’s love of fitness & movement began as a child where she trained & competed in artistic gymnastics ultimately achieve accolades at the Commonwealth Games.
Her passion for teaching others (particularly children) started when she set up a street dance school, Streetforce DC in 2007. From there she went on to become a Personal Trainer and discovered CrossFit in January 2013.
In June 2013 she became a CrossFit Level 1 Trainer and, with Carl, set up CrossFit Portsea Island / The Box Portsmouth in September 2013.
Claire has competed in numerous CrossFit competitions both as an individual athlete and team member. She is hugely passionate about helping others achieve their goals and in providing a supportive, fun community in which to make this happen.