Your rights are here...
Note it's dated 2004, so it might be out of date... The creator posted a comment last week though, saying;
"Watch this space, because I am working on an update, honestly I am! I am concentrating more on some of the issues that seem to be of greatest concern and this means reworking the whole document."
Might be worth having a copy in your camera bag - although I imagine if you try and show it to any over-zealous plod you're more likely to get into trouble, ironically.
There's another one here, but it seems less comprehensive: http://hmmm.co.za/ukrights.php