Harold is an expert in water and the founding director of Aguaconsult, with over thirty years of experience focusing primarily on the rural sub-sector on institutional reform and sector policy development, decentralisation of governance functions, service delivery arrangements and sustainability of services.

Harold has worked in over 30 countries in Latin America, Asia and Africa, including a long-term position in Pakistan between 1993 and 1995, where he was a technical advisor to the Local Government and Rural Development Department and in Nicaragua from 1996 to 1999 where he was advisor to the National Institute for Water and Sanitation. Since then, Harold has worked on dozens of assignments for a range of clients including FCDO , USAID, UNICEF, the Bill and Melinda Gates Foundation, the World Bank, private sector firms, international NGOs, philanthropic foundations and sector research institutions. In 2011 he co-authored a book on the sustainability of rural water service provision, which has contributed substantively to the way in which policy makers, practitioners and governments think about and support their investments globally. Since 2014, Harold has becoming increasingly involved in the political economy of water service delivery and systems-based approaches to sector strengthening and change.

Harold holds an M.Sc. from Cranfield in rural development as well as a BA in Geography from Sussex University, He is fluent in English and has a working knowledge of Spanish.