1. Rob Atkinson is Emeritus Professor in the Department of Geography and Environmental Management at the University of the West of England, Bristol, Frenchay Campus, Coldharbour Lane, Bristol, BS16 1QY, UK; Andrew Tallon (corresponding author) is a Senior Lecturer in the Department of Geography and Environmental Management at the University of the West of England, Bristol, Frenchay Campus, Coldharbour Lane, Bristol, BS16 1QY, UK;.