I have some friends staying with me and I sent them off yesterday on a tour of the East End of London with my old mate Harry Jackson who is a London Blue Badge guide. He is a specialist in the East End, Brick Lane and Jewish London as well as all the usual sights. If you're coming to London, I highly recommend checking hiom out at his site. My friends have been raving about how good he was.
If you've read Monica Ali's novel, and want to see the real thing, Harry's your man.