The UK All-Party Parliamentary Group (APPG) on complex needs and dual diagnosis was established in 2007 in recognition of the fact that people seeking help often have a number of over-lapping needs including problems around access to housing, social care, unemployment services, mental health provision or substance misuse support. In most cases each service is administered by separate service providers. The result is that people with multiple or complex needs fall through the gaps in service provision.

Social action is about people coming together to tackle an issue, support others or improve their local area, by sharing their time and expertise through volunteering, peer-led groups and community projects. This report sets out the findings from a call for evidence on how social action can improve outcomes, prevent crisis, support recovery and develop more responsive services for people with complex needs.