The authors would like to thank all the staff of ESC Ltd for suggestions and support and, in particular, Simon Burwood, Ron Bell, and Mohammed Bhaimia for their detailed contributions.
The authors are very grateful to Mike Dodson, Independent Consultant, of Solihull, for extensive comments and suggestions and for a thorough reading of the earlier manuscripts.
Thanks, also, to:
Dr Tony Foord for constructive comments on Chapters 3 and 4 and for help with the original Chapter 14.