ABSTRACT Although, arguably, the origins of social work in the UK have been closely aligned to community development in the past few decades, social work has occupied a bureaucratic landscape focusing primarily on individual risks and needs, leading to both fields drifting further apart. Dismantling of shared values and practices was fueled by layers of government policy and legislation, driven by a neoliberal agenda and public management reforms. However, a horizon of hope emerged when university staff in Social Work and Community Development Departments in Northern Ireland were approached to examine the need to reintroduce community development principles and practices into social work training. This paper aims to trace the development of a post-graduate diploma in community development approaches for professional social workers and analyses research that explores community development as the essence of social work. The programme was developed through a synergistic partnership between university, health trusts and the professional awarding body. Tracking 4 years of programme delivery, the paper highlights the effectiveness of, and learning from, collaboration between the two professions at strategic, technical, and operational levels. We posit here well-learned lessons for future collaborations and make recommendations providing a route map to mainstreaming community development in social work practice.