Demonstration: Parliament Mr. Clegg To ask the Secretary of State for the Home Department how many people have been (a) arrested for demonstrating and (b) stopped by police on suspicion of demonstrating within the exclusion zone around Parliament since its establishment. John Reid Section 132 of the Serious Organised Crime and Police Act 2005 came into force on 1 August 2005. The Home Office does not collect the information requested on arrests centrally. The Metropolitan police warn all demonstrators in the designated area who have not sought prior authorisation from the Commissioner who are invited to stop demonstrating and given time to depart. Those who refuse to stop their unauthorised demonstration, having been advised about the provisions covering demonstrations in the vicinity of Parliament, risk being arrested or reported for summons.