How can people be encouraged to cycle in London?

Chris Boardman and others joined a Guardian Live event to discuss why many people are put off riding a bike in the cityIs cycling in central London the preserve of young people in Lycra? Why do so many people think urban cycling is too risky? Despite a substantial increase in the number of people cycling on main roads (300% in the last 15 years and rising by 10% a year, according to Andrew Gilligan, cycling commissioner for London) many would-be cyclists are still too scared to cycle in the capi