One of Sydney's most popular wedding venues will now have its liquor licence reviewed after a guest suffered a serious fall inside the Queen Victoria Building in Sydney.
It's believed the man had been drinking before he was found at the bottom of an emergency stairwell in a critical condition.
It took half a dozen paramedics to stabilise the 45-year-old.
He was unresponsive and bleeding heavily from the head.
Police say he had been partying at a wedding on the top floor the building.
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The Tea Room is booked out most weekends for boozy celebrations.
It was just before 10pm when security guards found the man at the bottom of a stairwell with what emergency services described as catastrophic injuries.
He'd fallen, behind a fire safety door.
Police are investigating why he went through the emergency exit.
The man is believed to have had a lot to drink in the hours beforehand.
His condition has been downgraded to stable.
While there are no suspicious circumstances, the popular wedding group, Grand Pacific, has been referred to Licensing Police, to review the safe service of alcohol at their venues.
Grand Pacific Group was contacted, but refused to comment to Seven News.
It's not the first accident at the QVB involving stairs.
Back in 2015 13-year-old Archie Hunt died after falling 30 metres, while playing on the railings.
Centre Management says the site of the latest incident has been secured while a full investigation is carried out.