Responding to the growing number of psychologically-informed services for people experiencing social exclusion and, in particular, homelessness, this book gives professionals the information and understanding they need to be fully informed in their practice with this client group. It begins with theory, looking at the psychology of social exclusion and the processes that underlie it, and considers the relationship between trauma, complex needs, homelessness and social exclusion. Presenting practical interventions and case studies, the authors then reveal what makes an effective service in practice and a client perspective on social exclusion and recovery is provided. This is essential reading for all those involved in developing services that meet the needs of socially excluded people with histories of complex trauma or presentations of complex needs, including those who are homeless, refugees and asylum seekers, Traveller and Roma communities and people involved with the criminal justice system.