1 Centre for Fire and Hazard Science, University of Central Lancashire, Preston, PR1 2HE, UK.
2 Centre for Fire and Hazard Science, University of Central Lancashire, Preston, PR1 2HE, UK; Greater Manchester Fire and Rescue Service, Manchester, M4 5HU, UK.
3 Centre for Fire and Hazard Science, University of Central Lancashire, Preston, PR1 2HE, UK; West Midlands Fire Service Headquarters, 99 Vauxhall Road, Birmingham, B7 4HW, UK.
4 Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch, 8140, New Zealand; Olsson Fire and Risk, Manchester, M4 6WX, UK.
5 Centre for Fire and Hazard Science, University of Central Lancashire, Preston, PR1 2HE, UK. Electronic address: trhull@uclan.ac.uk.