The Thorn Course that provides psychosocial interventions and family work training for UK mental health professionals was founded in 1992. Since this time policy, service provision and needs have changed. The aim of this study was to examine the Thorn Course through relevant literature, in order to establish whether research and policy have been integrated into practice within training and services. A search of professional journal databases was conducted. Keywords used were 'Thorn Course' and 'psychosocial intervention training'. The resulting body of literature was reviewed. Five main themes emerged which were examined: needs identified, delivering the Thorn Course, training outcomes, implementing interventions and user and carer involvement. There is a distinct lack of research studies evaluating any aspect of the Thorn Course. There is little evidence that user and carer involvement has moved beyond rhetoric and community mental health nurses continue to lack opportunities and support to implement psychosocial skills acquired in training.