Police patrol London streets

Some 16,000 officers will police London’s streets in a bid to prevent a fourth night of rioting.
The Met Police has cancelled leave and drafted in support from 30 forces.
Shops and businesses in some areas are closing early in a bid to avoid the kind of violence and looting that spread through London on Monday.
Prime Mnister David Cameron has pledged to restore order, recalling Parliament on Thursday in response to the “sickening scenes”, which prompted unrest other cities.
So far 563 people have been arrested and 105 charged in connection with violence in the capital.
Deputy Assistant Commissioner Stephen Kavanagh said the use of plastic bullets – never before fired to deal with riots in England – would be “considered carefully” in the event of further disorder.
But he added: “That does not mean we are scared of using any tactic.”
Acting Commissioner Tim Godwin had earlier ruled out calling in the Army. (BBC)