This is the moment two police officers appear to get surrounded by a group of men after stopping a car in east London.
Video taken in Shadwell seems to show the officers trying to deal with two members of the group, while the others come towards them threateningly.
A scuffle appears to break out and, at one point during the struggle, an officer is pulled to the ground.
The policemen both use CS spray during the altercation, before back-up arrives in the form of another patrol car.
A spokesman for the Met Police said the incident happened at around 5.30pm after officers stopped a car on James Voller Way.
He said: “Whilst officers were speaking with the driver, a large group of males began arguing with them.
“The males became more aggressive and subsequently assaulted the officers.”
“Two police constables were treated for minor injuries.”
Four men have subsequently been arrested on on suspicion of assault on police, obstruction and Public Order Act offences.
