Parent-infant emotional health is probably one of the most complex arenas in which mental health, maternity and health visiting services operate. This critical period can be highly emotionally charged, not only for the infant but also be for the parent. While most parents essentially get it right, severe ruptures in the parent-infant relationship can occur, and can have serious consequences. This paper describes a comprehensive and cost-effective parent infant mental health service based on a psychodynamic model. The service aims to meet the needs of all parents from those with a high level of need through to a universal provision. Strategic and theoretical underpinnings of the service model are described.