London WAKE UP! All the other liveable Metropolises are doing it!

What's not to like? Space for people, space to relax... London get a bit Copenhagen! We've all been there, hours on our feet looking for somewhere to stop and relax where the air can circulate. London needs more pedestrian areas, places where tourists can find easily. It's all for the greater good.
If NY are doing it, changing their overhead railway into a green oasis, tourist spots fractionally pedestrianised... London can't you do the same?
http://cphpost.dk/news/national/‘copenhagenizing’-world-one-city-time