Police clash with crowds after London rave event
1 November 2015 Last updated at 11:30 GMT
Crowds throwing bottles, chairs and a suspected petrol bomb have clashed with riot police after an illegal rave in central London.
The Met Police said officers were attacked when they arrived to close the event at an address in Whitgift Street, Lambeth, late on Saturday.
Four officers were treated for injuries at the scene and a number of arrests had been made, the force said.
Dan Johnson reports.