This paper documents the proposals put forward by George Scott Williamson and Innes Pearse, founders of the Peckham Health Centre and members of the Political and Economic Planning (PEP) Health Group, to enhance the role and status of the general practitioner (GP). Their ideas are significant in terms of their understanding of the threat that specialism posed to general practice and of the problems of control and finance raised by reform. Their solution - the establishment of GP therapeutic centres or cells - is located in terms of their own ideas regarding health and medical practice and is compared with the other major proposal for group practice in health centres, which emanated from the Dawson Committee in 1920. Finally, the paper provides some suggestions as to the reason for their failure.