The aim of this rapid scoping review was to provide a summary of the available evidence on the development and implementation of peer support work in mental health services. The specific objectives were: to undertake a comprehensive review of the literature on peer support work; and identify how such work may be best implemented.

A rapid scoping review was identified as the most appropriate approach to reviewing the literature mainly because the objectives of this review were relatively broad and there was a short timeframe. In a rapid scoping review the data extraction and reporting are focused and limited to provide an overview of existing evidence.

From the initial database results of 7406 records, 663 were identified as meeting the inclusion criteria. The most relevant of these were then selected (n = 26) to be reported in this review with existing reviews of the research evidence (n = 7) being prioritised. The findings were organised into a number of sections: definitions, values and the role; development and implementation of peer support work; experiences of peer support workers; perceptions of others about peer support work; recruitment of peer support workers; training; supervision and support; and research on effectiveness.

There are excellent sources of guidance, considerable qualitative research about experiences and some encouraging, but limited, findings about the impact of peer support work specifically on recovery-oriented outcomes. There is a need for further rigorous research on the key aspects and effectiveness of peer support work.