Photographers need to know where we stand in relation to copyright and trespass laws. It isn’t that there are specific photography laws or regulations covering photography. UK law operates more on the basis of what you are not allowed to do, rather than declaring rights in a constitution.
The truth is there is little in the way of restrictions enshrined in law when it comes to photography in a public place.
As a rule of thumb, providing you have permission (if on private property) or you are photographing the subject whilst on public land (as well as the subject you are photographing is on public land) then there should be no photography restrictions. You may encounter problems with trepass if you are on private land, or land that has restricted access
The problem is, photographers are being challenged more and more by police, security guards, and members of the public. Street photographers may encounter this more and more. However it is said that if you appear to be covertly taking pictures, this may lead others to suspect you’re up to no good. Even then, that is not enough to stop you making work.
I have been looking around to see whether I could find some extra information on this and found these resources.
UK Photographers Rights Resources
Artlaw has an archive of legal articles related to visual artists. There is some comprehensive information about copyright for artists and they have a Q&A service that will answer questions of you cannot find the information you want there. Check out the article on Copyright before 1989 and check the section on Current Copyright Legislation.
Simon Moran hosts a great resource on UK photographers rights. Written by a legal expert and presented as an A4 document that can be printed double sided and carried around with you it is a good reference of the salient relative laws relating to photography.
Will Burrard Lucas has written a brief article outlaying his view of UK Photographic Copyright.
These are just some of the material online relating to copyright, trespass laws and photographers rights with relation to public photography restrictions. When I find some more I will post them here.