Scotland Yard have issued an appeal to track down four men they consider to have been ringleaders in last night's London riots as officers face having their holiday leave cancelled amid fears violent summer clashes will continue.
Thousands more officers will be out on the beat tonight and across the weekend as the Met seeks to avoid repeats of Tuesday's chaos when violent scenes broke out in three parts of London.
An officer and two members of the public were knifed and four other PCs injured after a water fight and party in Hyde Park spiralled out of control in the city's worst bout of violence since the 2011 riots.
Two 16-year-old boys were stabbed at a separate water fight in Burgess Park, Southwark, while police attempting to shut down an illegal block party in Stamford Hill, Hackney, had bottles thrown at them.
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