Fiona Sim is a Research Fellow at the London School of Hygiene and Tropical Medicine and a visiting chair at the University of Bedfordshire, UK. She is a former Head of Public Health Development at the Department of Health, where she was responsible for the national development of the public health workforce.Jenny Wright is executive director of Solutions for Public Health, the largest NHS public health agency in the UK. She has been involved with the development of the public health competence framework and led the project developing and running the UK-wide public health careers website, Phorcast.