But there is plenty of source data there - especially under <a href="http://www.statistics.gov.uk/hub/travel-transport/index.html">http://www.statistics.gov.uk/hub/travel-transport/index.html</a> [statistics.gov.uk].The document here: <a href="http://www.dft.gov.uk/adobepdf/162469/221412/217792/4212241/transportstatisticgreatbrit.pdf">http://www.dft.gov.uk/adobepdf/162469/221412/217792/4212241/transportstatisticgreatbrit.pdf</a> [dft.gov.uk] is very enlightening, for example, especially table 8.1. - 45 casualties per 100m km (62m miles).