Nicholas Watt and Andrew Sparrow
London Guardian 
Aug 9, 2011
David Cameron is chairing a meeting of ministers on Tuesday morning, with the government under pressure to bring in emergency measures to help contain the rioting that has engulfed London and spread to other cities around Britain.
Some MPs have been urging the government to impose curfews, to involve the army in the operation to restore order or to allow the police to use water cannon – an anti-riot device that has been used in Northern Ireland, but never on the mainland.
Theresa May, the home secretary, played down the prospects of introducing these measures in interviews before the Whitehall meetings – which was due to start at 9am – but she refused to rule out any of them.
“The British model of policing has been different [from that used on the continent]. It has been based on consent with local communities,” she said.
But May said ministers would be listening to the police because they wanted to hear “what [the police] think they need in order to do their job”.