More than one in four young people believe that the riots seen last summer could be repeated this year, a survey has found.
It reveals that many youngsters say boredom, copycat behaviour, peer pressure, jealousy and fears about the future caused last year's scenes of disorder and violence, and that little has changed.
About three in ten of thosequestioned also said that the sentences and punishments handed out to those whotook part in the riots were too soft.
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A 61-year-old woman was taken to hospital with head injuries after the incident in Islington, north London.
Counting will begin on Saturday morning, with the result expected later in the day.
There have been a number of incidents involving heavy goods vehicles getting stuck and causing disruption in recent months.