Introduction. What is organisational development? The role of OD policy implementation in healthcare. Organisational development and the 'repertoire' of healthcare leaders. The OD cycle: putting approches into a process. Service improvement. Psychodynamic approaches: organisational health and effectiveness. Systems theories and their applications. Emergence, complexity and organisational development. Working with structure. Working with culture. Critical appreciative inquiry as intervention in organisational discourse. Reaching the parts: the use of narrative and storytelling in organisational development. A review of the evidence on organisational development in healthcare. Conclusion.