http://www.indymedia.org.uk/en/2006/10/352904.html
"Doubtless a lot of people will already have read, be familiar with the following advice on public order situations. However, it's a useful text to read, even if certain bits are slightly outdated (thanks to the recent SOCPA legislation). Still a good guide for outwitting the cops, and might be useful for people coming to 'sack parliament'. Guide To Public Order Situations What we present here is a brief guide to surviving public order situations and slowing down or preventing the police from gaining the upper hand once a situation has occurred."
PDF - http://www.indymedia.org.uk/media/2006/10//352905.pdf