Dr Fiona Bull is the Head of the Physical Activity Unit in the Department of Health Promotion situated within the new Division of Healthier Populations at the World Health Organization based at headquarters in Geneva, Switzerland. Primary focus is on supporting countries implement the recommendations the Global Action Plan on Physical Activity 2018-2030, which includes an emphasis on whole of system approach and improving environment to promote and retain safe walking and cycle for people of all ages and abilities. Other work includes development of global normative standards such as updating the global guidelines on physical activity and sedentary behaviour, extending global partnerships and providing specialised technical support to countries through WHO Regional and Country Office, particularly to low- and middle-income countries. Before joining WHO, Fiona was Professor of Public Health and Physical Activity at the University of Western Australia and Director of the Centre for Built Environment and Health. Her professional interests cover global and national health policy on NCDs, epidemiology of physical activity and health, innovation, technology and systems approach to national actions on promoting physical activity. Dr Bull’s work has been recognised with the award of Member of the British Empire (MBE) for services to public health.