Simon Dadson is Professor in Physical Geography at the University of Oxford and a Fellow of Christ Church. Simon has published widely in the fields of climate change, hydrology and Earth surface processes, in leading scientific journals such as Nature, Science, Geophysical Research Letters, Proceedings of the Royal Society, and Water Resources Research. He has also recently authored the book Statistical Analysis of Geographical Data, published by Wiley-Blackwell in 2017, as part of an initiative to improve the teaching of statistics to undergraduate geographers. Simon's research has been featured in the print and broadcast media, including in The Times and on BBC Radio 4.

Four out of five alumni have gone on to work in the water sector, with destinations including public bodies such as the World Bank, the European Commission, OECD, United Nations, DfID, Defra, USAID; private practice including McKinsey, Arup, AECOM, Halcrow, and Mott MacDonald; and academia, at Stanford, Princeton, Berkeley, ETH Zürich, and Oxford.

Simon is regularly called upon to give advice to governments and national and international institutions around the world. In past projects, he has quantified the effects of climate change on river flows and water resources availability for the Department of Environment Food and Rural Affairs. In work funded by the Department for International Development, Simon has integrated a river flow model into the Met Office's regional climate model to enable developing countries to predict the effects of climate change on flood and drought risk. He is lead author of the Oxford Martin School Floods Restatement, which evaluated the scientific evidence base for natural flood management in the UK. Simon serves as a member of the OECD Global Water Partnership Task Force on Water Security, Risk and Growth. He is a Visiting Professor at the University of Reading and a Trustee of Christ Church, Oxford.