The Hard Rock Café Glasgow has closed down, as it's understood staff have been laid off in a shock announcement.

An announcement on the restaurant's website on Tuesday morning said: "Hard Rock Café Glasgow will not be operating today. We apologise for the inconvenience."

It's understood that staff were informed that the establishment would close with immediate effect.

Hard Rock Café Glasgow is housed in the City’s ‘Style Mile’ at 179 Buchanan Street in the restored, renaissance-inspired, 1891 Athenaeum Theatre.

The company later confirmed the closure, with a spokesperson saying: "We regret the Hard Rock Cafe Glasgow, located at 179 Buchanan Street, will not be operating at this time, but we continue to welcome our valued guests at the Hard Rock Cafe Edinburgh."

It is believed to employ in the region of 85 staff.

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Bryan Simpson, lead organiser of Unite Hospitality said: "The way in which workers at Hard Rock have been treated is morally reprehensible and almost certainly unlawful. 

"For so many workers to be given so little notice is outrageous and a clear breach of well established employment law. We will be doing everything in our power to support our members at Hard Rock to ensure they are paid everything they are entitled to.” 

The 170-seat restaurant/music venue opened to much fanfare in Scotland's largest city in November of 2013. Since opening, it has proved popular with tourists and locals alike.

Established in London in 1971, today Hard Rock International is one of the most globally recognized companies in the world and has venues in over 74 countries.

Hard Rock is also known for its music-related merchandise, with Hard Rock Cafés famous for displaying items belonging to some of the world's biggest rock stars.