Following ground-breaking work by Shepherd et al (1966) and, more recently, Goldberg & Huxley (1992), primary care is now recognised as the arena in which most contact occurs between the National Health Service (NHS) and people with mental health problems. General practitioners (GPs) remain the first, and in many cases the only, health professionals involved in the management of a whole range of conditions, from common anxiety and depressive disorders to severe and enduring mental illnesses.