I was pretty sure is was where the near the Queens Head, which is on Flamborough Street in Limehouse. If you look at it on Google maps its so alike. I've been there and it is really weird, even the pub (Queens Head) is the same. The bridge with the railway line on top is in exactly the same place to.
So yeh, in Limehouse...I can't remember wat the square is called but it is either just Flamborough Street, or near there.