Use of the Mental Health Gap Action Programme (mhGAP) by mental health volunteers in the UK: examples from South Asian diaspora charities.

The Mental Health Gap Action Programme (mhGAP) was launched by the World Health Organization (WHO) in 2008 to scale up services for mental, neurological and substance use disorders for low- and lower-middle-income countries. Subsequently, an updated mhGAP intervention Guide (mhGAP-IG 2.0) was released in 2016.