There is a need to develop a model where peers and prison staff can be used as resources for identifying and providing supportive services to prisoners with common mental health and addiction. The process of development would include Systematic review of peer-support interventions in the prison to understand the models used across the world in the area of prisoner’s mental health. Further key informant interviews with mental health professionals (n= 3), prison officials (n = 3) and the forensic psychiatry team (n = 2) would be conducted to formulate a programme of conducting a peer support programme for prisoners with common mental health disorder and substance use in the Central Jail at Bengaluru, India. The peer support programme developed for feasibility testing would be in three phases. Phase1: Training peers (convicted prisoners) and staff of prison in mental health promotion, common mental health problems and substance use, identification of persons with common mental health problems, basic supportive skills and methods of referral. Phase 2: Conducting mental health promotion in different barracks in the prison by peers and staff. Phase 3: Identification and provision of mental health services to prisoners with 6 months follow up to assess, number of cases identified, number people referred, improvement in clients’ symptoms, coping and wellbeing, satisfaction and challenges of the trainers and the end users.