G20 demonstrations

While tynan's worries about the actual application of laws are valid, filming or taking pictures of the police hasn't been made illegal. Information taken from the CM-London list, with thanks to the original poster.

In detail:

<<Concerns have recently been expressed in the media that a new
provision in the Counter Terrorism Act 2008 makes it a criminal
offence to take and publish a photograph of a police officer. Section
76 of the 2008 Act makes it an offence to elicit or attempt to elicit
information about an individual who is or has been a constable "which
is of a kind likely to be useful to a person committing or preparing
an act of terrorism." As the Explanatory Notes to the Counter
Terrorism Bill correctly stated, the new offence will only be
committed where the information in question is "such as to raise a
reasonable suspicion that it was intended to be used to assist in the
preparation or commission of an act of terrorism, and must be of a
kind that was likely to provide practical assistant to a person
committing or preparing an act of terrorism." That is the effect of a
decision of the Court of Appeal in a case in 2008 interpreting the
same statutory language in the separate terrorism offence of
possessing a document or record containing information of a kind
likely to be useful to a person committing or preparing an act of
terrorism.

We therefore do not share the concerns expressed in the media that the
new offence criminalises taking photographs of the police. However, we
do regard as significant the fact that this is being widely reported
as a matter of concern to journalists. Legal uncertainty about the
reach of criminal offences can have a chilling effect on the
activities of journalists and protestors. We therefore recommend that,
to eliminate any scope for doubt about the scope of the new offence in
section 76 of the Counter Terrorism Act 2008, guidance be issued to
the police about the scope of the offence in light of the decision of
the Court of Appeal, and specifically addressing concerns about its
improper use to prevent photographing or filming police. >>

http://www.publications.parliament.uk/pa/jt200809/jtselect/jtrights/47/4707.htm#a24