Bosses at Manchester city centre nightclub Factory have terminated the contract they held with a company providing its door staff after a video of bouncers throwing punches at two men emerged.

One of them, an 18-year-old, was taken to hospital with a 'serious' head injury, where police said he remained in a stable condition.

In a new statement, the nightclub confirmed it has 'immediately terminated the service contract with the door security company regardless of the outcome of any police investigation'.

Bosses said they were 'totally appalled' and would be contacting the Security Industry Authority to request a full review of the incident.

The authority, an independent body reporting to government, is the organisation responsible for regulating the private security industry.

(Image: Facebook)

Police are appealing to anyone with further video footage of the incident in the early hours of Sunday to get in touch.

Manchester council meanwhile has confirmed it has also launched an investigation.

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The footage, filmed outside the club on Princess Street, shows as many as eight security staff launching a volley of punches and kicks on two men.

At the start of the brawl one man can be seen being punched to the floor before the bouncers surround another man. As he falls onto his hands and knees the bouncers are seen punching the man in his back.

In the statement, Factory said: "We are totally appalled by the distressing incident and will obviously be fully supporting the ongoing police inquiries.

"Factory is committed to providing a safe and enjoyable environment for all its customers and we will simply not tolerate this sort of behaviour from anyone directly or indirectly employed by us, whatever the circumstances.

(Image: Manchester Evening News)

"Doorstaff at Factory are employed by a third party security contractor - we have immediately terminated the service contract with the door security company regardless of the outcome of any police investigation, and will be requesting ourselves that the SIA reviews the incident in full.

"Having viewed both the CCTV footage and the video circulating on social media, we can only say that we are shocked by what we have seen. We will also be getting in touch with the young man involved and we sincerely hope that he will make a speedy recovery."

Police were called at 3.20am.

GMP said: "Officers attended and an 18-year-old man was taken to hospital to be treated for a serious head injury. He remains in a stable condition. An investigation has been launched and officers are appealing for anyone with video footage to get in touch."

Chief Inspector Cherie Buttle said: "We’re aware that there are a number of videos circulating on social media and I cannot stress how important it is that those with footage make contact with us.

"With a mobile phone at everyone’s fingertips, filming something is often the first thing people think to do but please, pass this onto us to so we can fully investigate this matter."