Public Health England (PHE) is an executive agency of the Department of Health established on 1 April 2013 to bring together public health specialists from more than 70 organisations into a single public health service. PHE is a distinct delivery organisation with operational autonomy to advise and support government, local authorities and the National Health Service (NHS) in a professionally independent manner. With over 5,000 staff (full-time equivalent), mostly scientists, researchers and public health professionals, our remit is to protect and improve the nation’s health and wellbeing, and reduce health inequalities. One of PHEs core responsibilities is protecting the nation’s health through the national health protection service, and preparing for public health emergencies. We do this through world-class science, knowledge and intelligence, advocacy, partnerships and providing specialist public health services.