London Disturbances - Where Next?

After the disturbances in London last night, the news suggests that police are going to be bought in from other forces.

If this happens, is it possible that the disturbances may 'kick off' in the areas/towns/cities where the police are being pulled from to police London?

See also:  http://deadmanchatting.blogspot.com/2011/08/london-riots-8th9th-aug-my-experience.html