Frances Plimmer is a Chartered Valuation Surveyor who has spent most of her career in academia, acquiring the degrees of Master of Philosophy in 1991 and a PhD in 1999 from the University of Glamorgan, UK. She was Reader at the University of Glamorgan and Research Professor at Kingston University, UK. She also held an appointment in the Research Department at the College of Estate Management, UK. She was the editor of Property Management (1994-2010) and is on the editorial boards of several international research journals, including the Journal of Property Tax Assessment & Administration and International Journal of Housing Markets and Analysis. Formerly the UK delegate to the International Federation of Geometers' (FIG - Commission 2: Professional Education), she was the UK delegate to and Chair of FIG's Commission 9 (Valuation and Real Estate Management: 2010-2014). She has an international research reputation on the subjects of expropriation, compensation and property taxation, and has most recently been involved in research into the valuation of unregistered land. William McCluskey is Professor at the African Tax Institute, University of Pretoria, South Africa. He obtained his PhD from the University of Ulster, Northern Ireland, UK. He has held several visiting professorships, including at the University of Lodz, Poland, and University of Technology, Malaysia. He was also Professor of Property Studies at Lincoln University, New Zealand. His main professional and academic interests are in the fields of real estate valuation and property tax administration. He has an extensive publication record within international research journals and presented widely at conferences. He is a technical adviser with the International Monetary Fund, World Bank, European Union and Food and Agriculture Organisation-United Nations. He has been involved in a number of missions advising on real estate matters in several countries, including Albania, Botswana, China, Georgia, Jamaica, Kazakhstan, Kenya, Kosovo, Lesotho, the Philippines, Slovenia, South Africa, Tanzania and Uganda. He is a Fellow of the Royal Institution of Chartered Surveyors and board member of the International Property Tax Institute.