MM was a member of UK Medical Schools Council and a board member of UCL Partners between 2015 and 2023. He is an honorary consultant at UCLH NHS Trust. In 2022–2023, he was president of the British Medical Association. He is a former chair of the Global Health Advisory Committee of the Open Societies Foundation. He has conducted numerous research projects in the countries of the former Soviet Union, funded by the Wellcome Trust, UK Department for International Development, European Commission and the World Bank. He is Research Director of the European Observatory on Health Systems and Policies and is a former member of the International Advisory Committee of the Moscow Medical Academy. He accepted the award of a CBE for services to health in Europe in 2005 and is a Fellow of the Royal Colleges of Physicians of London and Edinburgh and the UK Academy of Medical Sciences, and an Honorary Fellow of the Faculty of Public Health and the Royal College of General Practitioners. He declares no other interests.