Street art project wipes out London's ugly spots with Photoshop eraser graffiti - photo 1Street art project wipes out London's ugly spots with Photoshop eraser graffiti - photo 2Street art project wipes out London's ugly spots with Photoshop eraser graffiti - photo 3Street art project wipes out London's ugly spots with Photoshop eraser graffiti - photo 4Street art project wipes out London's ugly spots with Photoshop eraser graffiti - photo 5