Dr. Helen Bevan has been a leader of large scale change in the English National Health Service for more than 20 years. Helen has been at the forefront of many NHS improvement initiatives that have made a difference for thousands of patients ever since. In 2010, Helen's team launched a call to action, utilising social movement leadership principles, which contributed to a 51% reduction in prescribing of antipsychotic drugs to people with dementia across the country. Helen initiated NHS Change Day, in partnership with a group of young clinical and managerial leaders in 2012. Helen also conceived, The School for Health and Care Radicals, which are currently included in "Britain's 50 new radicals" list sponsored by The Observer. Helen is acknowledged globally for her expertise in large scale change and ability to translate it into practical action and deliver outcomes. She provides advice, guidance and training on transformational change to leaders of health and care systems across the world.