Richmond Green, Old Deer Park and much of the town centre are now within a dispersal zone until Thursday evening.

It gives police extra powers to move large groups and troublemakers on.

"This is in relation to crowds in these areas causing ongoing anti-social behaviour and significant disorder," the police said.

While a dispersal zone is in place, it is a crime to:

Fail to comply with a direction given by a police officer or PCSO to disperse from the area

Fail to surrender items likely to cause anti-social behaviour, on request of a police officer or PCSO

Return within a specified period after being directed to disperse from the area.

Richmond Police said the zone was authorised under S35 of the Anti-Social Behaviour Crime and Policing Act 2014.

It will remain in place for 48 hours until 7.40pm on Friday, July 17.

This is the second time police have enforced a dispersal zone in recent weeks, after one which was in place over June 25-27.

Anyone who witnesses anti-social behaviour or crime is urged to report it.

They can do this online on the Met Police website, by calling 101 or dialing 999 in an emergency.