Utilising Abbott’s work on professions and disciplines we trace the broad development of Social Policy in UK universities over the past 50 years. As with all subjects, Social Policy is enmeshed in continuous boundary protection, and at the same time may seek to extend jurisdiction by laying claim to areas and activities undertaken by others. We draw on a range of sources to inform our analysis including: overviews of contributions to Journal of Social Policy; reviews of selected available UK Social Policy Association documents such as newsletters; reviews of research quality (Research Assessment Exercise/Research Excellence Framework) submissions; and student numbers data. In conclusion we consider whether reassessment of some of the jurisdictional battles of the past 50 years might provide routes forward for the subject to flourish in the current environment.