Just to back up CanHasDIY:
"In recent years we have seen a variety of measures introduced that undermine the right to protest and freedom of speech.
Laws intended to combat anti-social behaviour, terrorism and serious crime are routinely used against legitimate protesters.
Broadly drafted anti-terrorism offences of 'encouragement' and 'glorification' of terrorism threaten to make careless talk a crime.
Membership of certain organisations can be banned under anti-terror laws even if the organisation is non-violent and political.
Hate speech laws have been extended in a piecemeal way to ban ever-expanding categories of speech.
Broad anti-terrorism powers of stop and search have been used to harass and stifle peaceful protesters.
Protest around Parliament has been severely restricted by laws limiting and overly regulating the right to assemble and protest around Parliament."
It's really quite scary...