I am a Professor of Health Systems and Policy in the Department of Global Health and Development at LSHTM and Adjunct Professor at Njala University, Sierra Leone, with over 25 years of experience in health systems and policy research in low- and middle-income countries (LMICs). My main expertise is in health systems governance and anti-corruption, effective delivery models and health systems strengthening.

Seeking to ensure research uptake and impact on policy and practice, I have served as an elected board member of Health Systems Global, a professional society for health policy and systems research (HPSR) (2012-18), and co-founder and former co-chair of its Thematic Working Group on Teaching and Learning HPSR. Currently, I co-chair the Thematic Working Group Action on Accountability and Anti-corruption for SDGs (TWG AAA) and sit on the Steering Group of the Global Network for Anti-Corruption, Transparency, and Accountability (GNACTA) in Health Systems convened by the WHO, the Global Fund, and UNDP.

I served as a commissioner on the Lancet Commission on Realigning Child Health in the SDG Era (2019-2020) and was a technical team member on the Lancet Global Health Commission on PHC Financing for LMICs. I am a Senior Editor for BMC Health Services Research and Social Science and Medicine (Health Systems). I sit on a range of funding panels and advisory steering committees.