Acknowledgements
The research on which part of this article is based was funded by the former Scottish Executive Development Department. We are grateful to the contract manager Rosie Leven and the advisory team, to Professor Glen Bramley who led the study, to Andrew Robinson and Rosie Bushnell of Andrew Robinson Associates who contributed to it as well as to all those who gave us their time, opinions and information. The views expressed are those of the authors and do not necessarily reflect those of the former Department, nor the current Scottish Government Planning Directorate.