One of my favourite pieces of street art spotted (fairly) recently in Fashion Street is this horse and cavalryman by Conor Harrington. It's particularly good to see a relatively complex piece which is painted rather than pasted onto the wall.
An Irish artist, he is based in East London. Although he's best-known for large murals, the way this smaller image uses its site so well has a charm of its own. It was painted back in November, and is referred to as 'Decline of the West' on the artist's blog. He describes it as 'fading glory of former empires'.