former New York police chief will advise the British Government on how to tackle gangs following this week's riots.

Bill Bratton has headed the New York and Los Angeles police forces
Prime Minister David Cameron has asked the former chief of police in New York and Los Angeles, Bill Bratton, to become his crime adviser.
It comes as the courts continue to process the 1,210 people arrested so far - with 698 now facing charges.
Also, a council tenant in South London has become the first person to face eviction over claims her son was involved in looting.
Mr Bratton is no stranger to UK policing, having teamed up with British officers at other times over the past 20 years.
In 2009, the Queen awarded him the honorary title of Commander of the Most Excellent Order of the British Empire.


Mr Bratton, who is now a security expert, left the Los Angeles police force in 2009 after significantly lowering the crime rate.
Previously he was head of the New York Police Department where, in his first two years at the helm, reports of serious crime dropped 27%.
He said the disturbing scenes of police overwhelmed by rioting in London showed a need for more minority officers and other long-term solutions.
Reacting to the riots across England, Mr Bratton said British police needed to focus on calming racial tensions by working more with community leaders and civil rights groups.
He added: "(Mr) Cameron... thanked me for agreeing to work with the British government as they deal with the issues of gang crime, gang violence and gang intervention.

A suspected looter was arrested in Pimlico this week
"I am looking forward to the opportunity to work with them on those issues."
"I think part of what the Government is going to do is, to take a look at what worked and what didn't work during the course of the last week.
"My assignment is to focus more on the issues of the American experience dealing with gangs and what we may be able to share with them that might help them to prevent similar activities in the future."
The 63-year-old is expected to meet Mr Cameron next month to share his expertise on tackling street crime.
Mr Cameron and the police have been on a collision course after claims officers were too soft in their initial response to this week's disorder.

London Riots
How the London riots unfolded
The PM said officers had been overwhelmed at first and outmaneuvered by mobile gangs of rioters.
"Far too few police were deployed onto the streets. And the tactics they were using weren't working," he said.
However, a senior police chief hit out at Mr Cameron's claim that police budget cuts were "totally achievable" - saying less money meant fewer officers.
Sir Hugh Orde from the Association of Chief Police Officers (Acpo) said on BBC's Newsnight: "It is true there are cuts of 20% to policing over this current spending period.
"Inevitably and predictably that will lead to less police officers, let me be clear about that. It will also lead to less police staff."