I was just going to come in on the same issue if I may because, as you say, many of us do support the principle of shared space schemes, but we all have to understand the real difficulties that any scheme that relies on a social negotiation between the driver and the public is going to cause fears and dangers and potential problems -
Boris Johnson (Mayor of London): That is right.
Valerie Shawcross (AM): -- for people with a variety of disabilities, not just visual impairment. I wonder, Mr Mayor, whether or not you would be willing to meet Guide Dogs for the Blind and the organisations that support them to talk about this in more detail? I think there was maybe a bit of concern that your initial reaction was rather too supportive of pressing ahead on some of these schemes without us actually having nailed down the detailed design guidance that we need.