This chapter explores how public communication supports the development of policies and services, and their effective delivery. It analyses how communicators in UK government departments work alongside policy and service teams to add value throughout the policy cycle. Despite closer integration of the communication and policy making disciplines, evidence points to cultural and structural barriers to effective collaboration. This is particularly true at the early stages, where communication insights have the potential to inform policy decisions. Conversely, policy implementation is where the function’s role is most established, as illustrated by the use of evidence-based campaigns for achieving strategic objectives. The chapter discusses the opportunity for expanding communication’s contribution to participative and responsive policy making. Building on evidence that public trust suffers from citizens’ perceived lack of say in government decisions, the chapter proposes ways to leverage the function to close the feedback loop between citizens and policy. This includes exploring the emerging practice of organisational listening and means to increase interaction with citizens and stakeholders. The chapter concludes with recommendations for improving public communication’s support of participation initiatives and the UK’s open government agenda.