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The new Commissioner of the Metropolitan Police, Bernard Hogan-Howe, has admitted that Scotland Yard got its tactics wrong during the riots in England in August.
He gave evidence to the Home Affairs Committee on 11 October 2011, his first appearance since being appointed in September.
He told MPs that the force needed to review its intelligence, resources and tactics in the wake of the riots.
The ex-Chief Constable of Merseyside was appointed in September, following the resignation of Sir Paul Stephenson, who left his post over the phone hacking scandal.
Mr Hogan-Howe has been described as a "single-minded crime fighter" by the Home Secretary, and spent five years running the police force on Merseyside.
He told the committee that he wanted to see the number of police officers visible to the public by 50%.
Following the evidence session with Mr Hogan-Howe, the committee held further inquiries into the impact of the riots.
MPs heard from Bill Bratton, the former Chief of Police of the Los Angeles Police Department, who was in London to advise the government on tackling gang culture.
Mr Bratton warned that the UK should not rely on the police alone to tackle gang culture.
He said that partnerships with community groups had formed a large part of his success with reducing gang violence in the US.