Continuing professional development (CPD) is a substantial, but hitherto largely unappreciated component of lifelong learning and education (LLL/LLE). CPD encourages analysis of the LLL/LLE of those with high education in early years. It draws attention to the influence of particular organisations, professional associations and regulatory bodies, not only as suppliers of LLL/LLE, but also as facilitators of perpetual cycles of learning and in so doing connect lifelong learning with individual identities as professionals. This study highlights the importance of bringing a sociological perspective into understanding participation in LLL/LLE through consideration of a wider range of stakeholders. Data is presented on these organisations' CPD policies from a large-scale survey carried out in the UK triennially between 2003 and 2018, in addition to interviews, focus groups and other surveys of employees of these organisations in the UK, as well as in Australia, Canada and Ireland reported in many publications. The development path of CPD and the changes this has led to for the exercise of professionals' lifelong learning and for the functioning of these organisations themselves is analysed. CPD policies and programmes are portrayed as a structured system distinct from university continuing education and training.