Britain does not have specific guarantees of privacy in law, so no one can stop you filming them provided you are not breaking some other law to do so – such as trespassing.
Do I have to answer police questions?
You don’t have to answer any questions the police officer asks you, unless the officer suspects you are linked to an offence
Do I need permission to video anything I can see from a public areas?
Members of the public and the media do not need a permit to film or photograph in public places and police have no power to stop them filming or photographing incidents or police personnel.
Do I have to identify myself?
You DO NOT have to give your name and address unless the officer points out an offence he / she suspects you have committed.
Are police stations and court buildings public places?
Yes they are so much as in the public lobby areas. Most of these buildings will have private rooms and areas where you may need explicit permission to film.
Must the police identify themselves when instigating conversation or when asked?
A police officer is required to give their name, rank and station if you ask for it, If he does not he may be guilty of an offence and receive a fine.
There should be no expectation of privacy in public places!
There are no powers prohibiting the taking of photographs, film or digital images in a public place. Therefore members of the public and press should not be prevented from doing so.