Publications in the Appendix are available at http://eprints.bham.ac.uk/23/ http://eprints.bham.ac.uk/24/ http://eprints.bham.ac.uk/25/ http://eprints.bham.ac.uk/26/ http://eprints.bham.ac.uk/27/ http://eprints.bham.ac.uk/28/