Hmmm.
I think that the law you have in mind is the Counter-Terrorism Act 2008 (available via www.opsi.gov.uk/acts/acts2008/ukpga_20080028_en_1), section 76.

Offences relating to information about members of armed forces etc
(1)After section 58 of the Terrorism Act 2000 (collection of information) insert—
“58AEliciting, publishing or communicating information about members of armed forces etc
(1)A person commits an offence who—
(a)elicits or attempts to elicit information about an individual who is or has been—
(i)a member of Her Majesty’s forces,
(ii)a member of any of the intelligence services, or
(iii)a constable,which is of a kind likely to be useful to a person committing or preparing an act of terrorism, or
(b)publishes or communicates any such information.
(2)It is a defence for a person charged with an offence under this section to prove that they had a reasonable excuse for their action.

That is to say, if you photograph a policeman in a manner that's likely to be useful to a terrorist, with the intention of being useful to a terrorist, then you're in trouble. But that's no biggie. On the other hand, if you have a reasonable excuse, you're OK. Finally, and more importantly, even if you don't have an excuse, and there's no reason to think that you are taking the photo for nefarious purposes, then you won't have to worry about your case, simply because there'll be no case to answer.


I mean - really - do you honestly think that it'd be made illegal to photograph a copper? Really?

This dose of sanity was brought to you by the letters ENZYME. No charge has been made on this occasion.
( Enzyme is powered by sunlight, Fri 13 Feb 2009, 20:25, Reply)