Eric Shapiro is a Chartered Surveyor and Director of Professional Property Services, Chestertons. He has over 50 years’ experience in dealing with the management, valuation, sale and letting of residential and commercial property. He is a co-author of Valuation: Principles into Practice. David Mackmin BSc, MSc, FRICS is a Chartered Surveyor. He is Emeritus Professor of Real Estate at Sheffield Hallam University and a former Visiting Professor in Valuation at the Technische Universität, Wien. He was for many years an assessor for the RICS Assessment of Professional Competence (APC). He is the author and co-author of a number of valuation books, including, with Professor Andrew Baum and Nick Nunnington, The Income Approach to Property Valuation. Gary Sams is a Chartered Surveyor specialising in compulsory purchase and compensation, and module leader in statutory valuations for the University College of Estate Management. He is the editor and joint author, with Professor Andrew Baum, of Statutory Valuations and Legal Editor for the Journal of Property Valuation and Investment.