Nice Wall by the Prefab collective in Brighton.
Prefab is a street art collective from New Castle. They create huge pieces, canvases, street intervention, print and stickers. Here's the pictures of a piece realised last spring in Brighton. A 30ft piece up representing a blowing telephone box.
You can check their blog to find news about the collective , and of course their site to see more of their artwork. Be sure to check their last prints " Love me not" and "Ennemy of Promise US".