Emancipatory practice development (ePD) is a practitioner‐led research methodology which enables workplace transformation. Underpinned by the critical paradigm, ePD works through facilitation and workplace learning, with people in their local context on practice issues that are significant to them. Its purpose is to embed safe, person‐centred learning cultures which transform individuals and workplaces. In this article, we critically reflect on a year‐long ePD study in an acute care hospital ward. We explore the challenges of practice change within systems, building collective (...) strength with frontline collaborations and leadership to sustain new learning cultures. Our work advances practice development dialogue through working closely with the underpinning theories. Our critique analyses how ePD can enact and sustain change within a complex system. We argue that ePD works to strengthen safety cultures by challenging antidemocratic practices through communicative action. By opening communicative spaces, ePD enables staff to collectively deliberate and reach consensus. Their raised awareness supports staff to resist ways of working which conspire against safe patient care. Sustainability of practice change is fostered by the co‐operative democracies created within the frontline team and meso level enablement. We conclude that the democratising potential of ePDt generates staff agency at the frontline. (shrink)