As you appear to have the figures at your disposal, how about running the numbers.
Only remembering reading http://www.tfl.gov.uk/assets/downloads/PC-Cas-Factsheet-Final-1986-2007.pdf from http://www.tfl.gov.uk/corporate/projectsandschemes/roadsandpublicspaces/2840.aspx
@moth started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Only remembering reading
http://www.tfl.gov.uk/assets/downloads/PC-Cas-Factsheet-Final-1986-2007.pdf
from
http://www.tfl.gov.uk/corporate/projectsandschemes/roadsandpublicspaces/2840.aspx