Police have responded to the spate of cyclist deaths by posting hundreds of officers on London's busiest junctions. Six people were killed within two weeks of each other while riding in the capital this month.
Today, in a high-visibility operation, police are handing out penalty notices to drivers, and stern advice to cyclists who break the rules of the road. Piers Hopkirk reports.
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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.