Disturbing footage of a violent bashing at a UK petrol station has revealed a group of young thugs knocking their victim unconscious before robbing him.

The brutal scenes took place in Birmingham and show three men being chased to the service station by a group of at least four men.

View photos The brawl started with seven people involved, but quickly turned to four men on one. Photo: YouTube More

While two of the victims manage to flee, a third is left behind after he trips near one of the bowsers.

Before he can get up, the attackers launch a series of punches and kicks to his face, leaving him slumped unconscious on the ground.

The gang throws in several more kicks before fleeing off camera.

View photos The man trips over and quickly becomes the victim of the brutal bashing. Photo: YouTube More

View photos The men knock their victim unconscious before running away. Photo: YouTube More

A short time later a woman approaches the man but is soon scared off by the gang, who have returned – this time with their hoods covering their faces.

They go through the man’s pockets and as he starts to stir, the men land another violent round of kicks to his head, knocking him out a second time.

A 19-year-old man and a 21-year-old man have since been arrested over the senseless attack.

Birmingham authorities said the video was “extremely distressing” and are searching for the two other men believed to be involved.

View photos The gang returns shortly after to empty the victim's pockets. Photo: YouTube More

The victim, believed to be 25, managed to escape with only minor injuries.

It is unknown what provoked the assault.

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Morning news break - April 12