Background Sydney Medical Service Co-operative Ltd (SMS) is Sydney's oldest and largest after-hours Medical Deputising Service, and is fully accredited to RACGP standards. It is a Not-for-Profit Co-operative run by Doctors for Doctors and has been in operation since 1966. The Sydney Medical Service Co-Operative Limited was formed in 1966, by the amalgamation of two existing services. It was the first Medical Deputising Service to be incorporated under the Co-operative Act, New South Wales, as a not for profit "Community Advancement Society" The Service is managed by a board of directors all of whom are general practitioners and the Service rules have been approved by the registrar of co-operatives and cannot be altered unless strict requirements demanded by the Co-operatives Act have been fully met. For further details please download this information sheet