Setting and procedure
Individuals will find out about the study through reading adverts in the Metro free-sheet (Scottish edition), or seeing an online or other contact from AOD which will direct them to contact the Research assistant by phone or email for further details. Anyone who expresses interest in the study will be sent copies of the Participant Information Sheet (which includes information on how to seek help if it is needed immediately), brief Eligibility Questionnaire, PHQ9, GAD7, Hospital Anxiety and Depression scale (HADS) [32] and Consent Form.