Only three out of ten government departments have reached the level of transparency set out in its 2015 UK Aid Strategy. Our detailed review assessed ten government departments spending significant amounts of official development assistance (ODA) and found that they all now share some data on their aid and many have improved the regularity and quantity of information they make available through the International Aid Transparency Initiative (IATI). However, currently only the Department for International Development (DFID), the Department of Health and Social Care and the Department for Business, Energy and Industrial Strategy meet the aid transparency targets the government is due to meet by 2020.