Barry Cullingworth (1929-2005), University of Cambridge, UK and University of Delaware, USA. Simin Davoudi, David Webb, Geoff Vigar, John Pendlebury and Tim Townshend, Newcastle University, UK. Menelaos Gkartzios, Newcastle University, UK and Izmir Institute of Technology, Turkey. Trevor Hart (1946-2017), Newcastle University, UK and York Natural Environment Trust. Vincent Nadin, TU Delft, the Netherlands, and South China University, China.