Olivia O’Sullivan is the Director of the UK in the World Programme at Chatham House. Before joining Chatham House, she spent over a decade working in international development and foreign policy within the UK government, holding roles in the Department for International Development, Cabinet Office, and cross-government teams.

She previously served as foreign policy lead and deputy head of the Open Innovation Team, a government research unit focused on translating academic evidence into policy. Her experience includes managing external expert engagement for the 2021 Integrated Review, overseeing the UK’s funding and policy response to the Rohingya refugee crisis, and leading various international development and humanitarian funding programs.