POLICE are investigating CCTV video footage that shows a brutal assault on a man at an East London filling station early on Sunday morning, following an apparent road rage incident, reports Dispatch Online.

Donnovan Rottcher has laid an assault charge after he was badly assaulted by a fellow motorist at the Engen garage in Devereux Avenue following an earlier verbal exchange.

The incident started in Frere Road and then spilled over when Rottcher and a friend arrived at the filling station.

The video shows a man, driving what appears to be a small silver hatchback, getting out over the car and shoving a person -- which Rottcher claims to be himself – several times.

When Rottcher’s friend tries to intervene, the attacker gives him a slap before again turning his attention to Rottcher, who is then dragged into the lights next to the petrol pump and further assaulted.

The man then walks back to his car -- with a female companion seemingly trying to calm him down -- before changing his mind and again goes for Rottcher.

This time, the man flattens Rottcher seemingly with a left hook and leaves him unconscious on the pavement, before getting into his car and driving off.

Rottcher claims he had done nothing to provoke the attack.

“The man started swearing at me and I don’t know what I had done wrong. I just turned up the road to the filling station,” he said.

Rottcher’s father Mike Crawford said he opened an assault case at the Cambridge police station.

Police’s Captain Leon Fortune said the case would be investigated