Violence spreads as London burns

Violence and looting spread to Birmingham, Liverpool and Bristol as huge fires burned across London in the UK's worst domestic unrest in decades.

Violence escalated across London and at least three other cities Tuesday as police fought thousands of rioters and looters and Prime Minister David Cameron headed back to Britain to face the crisis.

In unprecedented scenes of rioting in the capital, buildings were in flames in Croydon, Peckham and Lewisham in the city's south, while gangs of looters roamed the streets of Hackney in the east, Clapham in the south, Camden in the north and Ealing in the west.