Abstract
Mental health services are of interest not only because of the large burden they impose, but also because they have been subject to more change than virtually any other type of health service over the past four decades. Although both the US and UK have taken to ‘deinstitutionalisation’ with enthusiasm, the US has so far proceeded somewhat further down that road than the UK. While both countries face similar problems, the NHS and Community Care Act 1990 may now lead to considerable further changes in the UK.