This is The Shoal, an installation intended to brighten up, (or more realistically, hide) the Stratford Centre for the Olympic visitors. Diamond Geezer wrote it up a while back, when it first started appearing.
A London photo every day. Some pictures will be there for their own sake, some because they are places you may like to see, all because they are part of what makes London what it is. Requests welcome!
Raising funds for Breast Cancer Care