LONDON - British Prime Minister David Cameron said on Wednesday that a fight back is underway and a more robust approach resulted in calmer streets in London.

On Wednesday morning, Cameron chaired another emergency meeting. In a statement, he paid tribute to police and emergency services, saying that there are more police, more people being arrested, more people being charged and prosecuted.

He added there are contingency plans for water cannon to be used at 24 hours' notice.

Speaking outside the Downing Street No. 10, Cameron said "It is clear there are things that are badly wrong in our society."

He said the perpetrators of trouble would be halted, adding that "This continued violence is simply not acceptable, and it will be stopped. We will not put up with this in our country. We will not allow a culture of fear to exist on our streets."

Cameron vowed to give the police whatever they need to combat rioting.

On police funding, Cameron said "We won't do anything that will reduce the amount of visible policing on our streets."

On Tuesday night, riots again hit Britain for the fourth night in succession, with significant violence in the northern industrial city of Manchester, Wolverhampton, as well as minor violence in London.

Police had posted 16,000 officers on the streets of London to prevent a repeat of Monday night's scene of arson, looting, mugging and assaults that took place as hundreds of rioters clashed with police in many parts of the city.

Until now, about 1,000 people have been arrested across the country.