The aim of this report is to provide a scoping review of evaluation studies of interventions and serv ices to support carers of people with m ental health problem s, to discuss issues relating to the effectiveness and cost - effectiveness of interventions, and to provide insights into areas where there are gaps in knowledge. The report is accom panied by a second report, the Consultation Report, that docum ents a consultation exercise held with key stakeholders, including ‘key informant’ carers. A third report, the Overview Report, draws together the em erging them es and issues, and advises on what further researc h and development work should be funded in this area.