This article is based on work undertaken at the request of my fellow members of a DHSS Working Party chaired by Professor Norman Tutt, Department of Applied Social Studies at the University of Lancaster. The terms of reference were: ‘to consider observation and assessment services for children and young persons referred to local authority Social Services Departments; to clarify the role of observation and assessment centres; to consider the promotion of non-residential observation and assessment; to consider what improvements in present assessment practice might be helpful or necessary and to make recommendations’. The report is currently in its final draft and has been sent to the DHSS for approval; and, since my contribution has necessarily been compressed into a few paragraphs, my colleagues suggested that I should seek an additional route to publication.