This report by Nicholas Pleace explores Housing First in relation to the evidence base on services designed to end homelessness among single people (i.e. lone adults) with support needs. The report is concerned with services for those single homeless people who require support as well as housing. The report also gives some attention to prevention and relief services.
https://www.mungos.org/wp-content/uploads/2018/02/ST_Mungos_HousingFirst_Report_2018.pdf