This report presents the findings from an exploratory study of a physical activity intervention based in Northern Ireland for people with severe and enduring mental health problems. The project was funded by Disability Research on Independent Living and Learning (DRILL) and employed a co-production approach between people with lived experience of mental health problems, Mental Health Foundation, Queen’s University Belfast, Praxis Care, Platinum Training Institute, Northern Ireland Chest Heart & Stroke and the Northern, South Eastern and Western Recovery Colleges.