Discovered these ones recently in one of London's last street art resorts: Hackney Wick in the very East of London. Or as we call it Hackney Wicked. I love that area. It is placed right next to the new Olympic stadium but is everything else but sporty, or posh or modern. It is an area full of warehouses - and those warehouses are full of creative folks who like the (still?) cheap rents and creative freedom in them.
I am curious how the Olympic Games will affect the area.