Feel free to leave any links on here that we could dig up as more background knowledge.
Link to a BBC report of an exhibition that Banksy did in Bristol? its got some good images too:
Also this page has got a few quotes from Banksy himself and I've cross-checked most of them with his book (I know its wiki, but if we see one that would be useful then we can then double check it and its all good from there):
See you next meeting guys :)