Mayor Boris Johnson is a keen cyclist and launched a bicycle hire scheme, affectionately known as 'Boris bikes' in 2010. Since then the number of cyclists in the capital has boomed.
2010/11 saw 540,000 cycle trips made in London per day
173% increase in cycling on London's main roads between 2000/01 and 2011/12
23% of Londoners cycled in the last year (2010/2011)
35% of London households own a bicycle (8% increase over one year, 2010/2011)
1 in 10 Londoners make a round trip by bike every day
48,397 Londoners received cycle training in 2010/11
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David Cameron said the Met proved it can "do more with less" and declined to criticise the Mayor of London for his water cannon spend.
A group of disabled activists threw toys and balls at him as he entered the conference.
A wet start to the week and the unsettled weather is set to continue over the next few days.