1. Community and Special Care Dentistry, Cambridgeshire Community Dental Services (former SHO in Dental Public Health, King's College Hospital NHS Trust and VDP in Primary Dental Care, 2008–2010)
2. Professor of Oral Health Strategy, Head of Population and Patient Health, King's College London Dental Institute at Guy's, King's College and St Thomas' Hospitals, London, UK; Honorary Consultant in Dental Public Health, Public Health England, UK