Dr Guy Hutton is Director of Innate Values Ltd (UK). He has worked in international development for over 30 years. Over 30 years, he has held positions at UNICEF (Senior WASH Adviser); World Bank (Senior Water and Sanitation Economist), the University of Basel, Switzerland; the London School of Hygiene and Tropical Medicine; and Oxford University. He has led country and global research studies and advocacy initiatives in the fields of water, sanitation, health, air pollution and climate change. Notable publications he has led are global costs and cost-benefit of WASH interventions (2004, 2008, 2012, 2015, 2016, 2020), economic impacts of poor sanitation (2007-2020), disease control priorities project WASH chapter (2016-7), global monitoring of WASH affordability (2021) and a guideline on developing WASH finance strategies (2022). From 2020-22 he served as the Chair of the Sanitation and Water for All (SWA) Systems and Finance Working Group and from 2018-20 he served as Chair of the WASH4WORK Partnership. He was the lead author of two reports of the Africa Water Investment Programme (AIP) high level panel (HLP) and a country guideline on how to mobilise US$ 30 billion annually for water security and sustainable sanitation in Africa (2022-24). For the UN Sanitation and Hygiene Fund, he is leading the development of the Sanitation Economy Maturity Assessment Tool (SANEMAT).