9 August 2011 Last updated at 22:21

Chuka Umunna, Labour MP for Streatham, which includes Brixton, says he wants to see Blackberry's messenger service "temporarily disabled" between 1800 BST and 0600 BST to stop those organising disorder.

People are following us around with bags, asking where the riots are. There is no doubt that there is a great deal of opportunism going on here tonight in Manchester.

Mr Whalley says the shopping centre took additional precautions tonight: "We employed four rather large dogs and dog handlers which has had a positive effect, but whereas yesterday it was about looting, today the young people seem to just want to be out there to cause damage." He says he thinks customers numbers in the shopping centre will be very low again on Wednesday.

A quick update from Birmingham's Bullring shopping centre. It's manager, Tim Whalley, says two sets of doors have been smashed this evening, and youths are moving around a lot, so "police in many ways are chasing shadows".

BBC Radio Manchester listener Eddie Vaughn, who is in the Deansgate area of the city, says it isn't just young people that are involved in the rioting but people in their late 30s and early 40s "who should know better". "And there was kids there as young as 12,13," he says. "There was also the ubiquitous spotters on their bikes - basically going round checking where the bobbies were and coming back and letting the rest of them know."

Enfield, in North London, scene of some of the worst rioting on Monday night, is very quiet. Met some residents who've told us they've been out tonight helping the police and looking after neighbourhood.

Cllr Marc Ramsbottom, from Manchester City Council, says the council is working with police to make sure the city is as safe as possible. He says it is difficult to say precisely how much damage has been caused but he has seen a number of stores that have had their windows smashed. A large amount of criminality is being caused by a relatively small, young group of people, he adds.

Latest stores to be looted in Manchester - Diesel, Bang and Olufsen, High and Mighty. Police now on scene. Eyewitnesses say looting took place an hour ago.

Police have just told me they have dealt with bottles and bricks being thrown in Canning Town, East London. Number of arrests.

Small pockets of troublemakers are moving around quite quickly from one area to another in Manchester.