A fight between drunken revellers and bouncers was filmed spilling out into the road, with a mass brawl kicking off.
Security staff from a nearby venue were seen clashing with punters as tensions spiralled out of control.
Shocking footage shows a group of bouncers then chasing down a gang of men with their fists clenched.
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The bizarre clash took place on Charterhouse Street in Farringdon, central London, as reported by Need To Know.
In the clip, the group can be seen backing off into the road – before punches are exchanged.
One man was floored during the clash and held down by bouncers.
The other security workers pursued the rest of the group before returning to the scene.
More security personnel, dressed in white, also arrived at the scene as the conflict de-escalated.
A passerby captured the shocking fight on camera.
It is currently unclear what started the brawl between the bouncers and the intoxicated punters.
Members of the public were appalled – or, in some cases, amused – by the footage.
One viewer, Morgan Johnston, said: “All bullied in school.”

Robin Lane added: “Boys love fighting.”
Ashley Hoffman said: “Why are security chasing people down the streets?”
Lenny added: “Bouncers only get this energy when they’re in a pack or when they’re up against a drunk on his own, cowards.”

And Bruce joked: “Then East 17 turned up.”
The Met Police has been approached for a comment.
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