his wife from a gang of Russian thugs in 2014

Scene reminiscent of when a pro boxer was shown on CCTV

A pair of hooded young men wished they hadn't picked on this man's girlfriend in an underpass.

CCTV footage shows both of them get swiftly knocked out by the boyfriend after they make comments as he walks past with his partner.

The video was posted to LiveLeak yesterday by a user from Watford, and debate is already raging on whether it is genuine, or all a grand setup.

CCTV footage shows two hooded men picking on a couple before one throws a cigarette into the woman's hair

At the start of the film, a man wearing a white baseball cap walks past the two men holding the arm of his girlfriend.

After they have walked on by one of the males throws what appears to be the end of his cigarette into her hair.

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The stunned couple turn around and the boyfriend immediately storms over to confront him.

In one smooth move he knocks the man who threw the butt out flat, his head painfully slamming into the ground.

The other man, in a grey hooded top, is also pushed to the floor and punched in the face, before the angry boyfriend marches off without taking a single hit.

The stunned couple turn around in an underpass believed to be in the UK. The boyfriend looks back in shock

Hey you! The man storms up to confront the yob in a video some are convinced has all been set up

The first man is still out cold on the floor, and his friend quickly gets up off the ground and rushes over to roll him into the recovery position.

It is unclear where and when the confrontation took place, though it is believed to be an underpass in the UK.

The uploder of the video titled it: 'two chavs pick on boxers girlfriend and get brutally KO'd!'

In one smooth move the boyfriend knocks the man out flat, his head painfully slamming into the ground

The other man, in a grey hooded top, is also pushed to the floor and punched in the face as his friend is out cold

On social media many commenters are sure the whole scene is a stunt but others are not so convinced.

On Reddit one wrote: 'No way that first guy who was punched was acting you can't just fall like that unless you have been knocked out.'

But another user responded: 'It's fake. Punches don't connect and the first guy keeps his head up when he falls back. He does a very good job of making it look realistic though.'

The man in the grey hoodie quickly gets up and rushes over to roll his friend into the recovery position

And another added: 'Also, the CCTV time-stamp is an overlay added in post-production. Where have you ever seen black Times New Roman on CCTV like that?'

It is possible the group were inspired by viral videos where boxers have beaten off attackers after attacking their partners.

In one notable incident two years ago professional boxer Nicolai Vlasenko was caught on camera taking down an entire gang of Russian thugs after they harassed his wife.

Police took no further action after claiming the man was clearly acting in self-defence, on his own against nearly a dozen people.