Service users.  Inclusion criteria:  Over 18 years old. Able to speak sufficient English to provide informed consent to take part in an interview or focus group. Current or prior experience of using general adult community-based mental health services (within the past 12 months).  Exclusion criteria:  Unable to speak sufficient English to take part in an interview or focus group. Unable to give informed consent to take part in an interview or focus group. Currently receiving inpatient mental healthcare at a psychiatric hospital, or care from a service for older adults. Deemed by the researcher to be distressed or too unwell to take part in an interview or focus group. Their experience of services primarily falls outside of the remit of general adult mental health services, e.g. they have a primary diagnosis of Substance Use Disorder, or their care is provided by specialist tertiary care providers such as forensic mental health services.  Carers.  Inclusion criteria:  Over 18 years old. Able to speak sufficient English to provide informed consent to take part in an interview or focus group. Current or prior experience of caring for an individual accessing general adult community-based mental health services (within the past 12 months).  Exclusion criteria:  Unable to speak sufficient English to take part in an interview or focus group. Unable to give informed consent to take part in an interview or focus group.  Carers who have a caring responsibility for:  A child (0-17 years), An individual using older adult mental health services, An adult using services which fall outside of the remit of general adult mental health services, Someone without a mental health problem.  Healthcare professionals.  Inclusion criteria:  Over 18 years old. Able to speak sufficient English to provide informed consent to take part in an interview or focus group. Currently employed within a community-based service which provides general adult mental healthcare.  Exclusion criteria:  Unable to speak sufficient English to take part in an interview or focus group. Unable to give informed consent to take part in an interview or focus group.  Healthcare professionals who are currently working in a mental health service which:  Is not based in a community setting (e.g. inpatient care), Falls outside of the remit of general adult mental health services, Provides services to children (0-17 years) or older adults.