This study aimed to address whether a water exercise programme improves pain and quality of life in pregnant patients with Pelvic Girdle Pain (PGP) compared to a land-based exercise programme and the feasibility of undertaking a large-scale research programme. Twenty-three participants with diagnosed PGP, recruited at St George's Hospital London, were randomised into two groups (water or land exercise). Each group received, four, once-weekly exercise sessions on land or water. Exercise effects on PGP were measured using a variety of outcome measures. Outcomes were assessed at baseline and post four weeks exercise.