Mill buildings
I believe Millenium Mills is listed, not so sure about the former Rank Hovis mill. Yes, plenty of asbestos.
Work has already begun on work inside Millenium Mills as part of "Silvertown Quays" project. I've seen 2 master plans, one with the Rank Hovis mill kept, one without.
A google search on the project will reveal all I'm sure....along with some interesting footage from "urban explorers"...