Administrators have been called in for a 海角视频-wide hotel chain, with staff claiming they haven't been paid "for weeks".
Hashtag Hotels has 17 sites across the country, and many members of staff were emailed on Wednesday being told they were being made redundant.
On Wednesday, the firm's Instagram, Facebook and Twitter pages were all unavailable.
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An email to various employees and seen by BusinessLive, said that due to the hotel chain's financial position, it was "not able" to make payments to staff for arrears of pay, holiday pay, redundancy pay or compensatory notice pay.
It said their employment had ended on August 28 "by reason of redundancy".
As well as six locations in London, other Hashtag Hotel locations include Liverpool, Bangor, Dublin, Newcastle, Edinburgh, Bournemouth, Plymouth and Nottingham. According to its website, there are 17 in total.
The letter to staff added that if they wanted to receive any due payments, they should make a claim online using the government website, adding that Leonard Curtis had been appointed as administrators.
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A spokeswoman for Leonard Curtis confirmed the company had been appointed as administrators, and has been asked for a further comment.
On Wednesday, staff told BusinessLive that not all employees had been made redundant - around half of staff at the hotel in Liverpool had kept their jobs - although had "no idea" what would happen next.
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Sean Mullan, 22, worked at the Liverpool hotel, which was based at the Collegiate Fontenoy Apartments student accommodation building in the after being launched in June.
He left the firm at the end of July.
But he said he was friends with various staff still working at the hotel until this week - many of whom had gone "for weeks" without pay.
He told the ECHO: "When I started in June, we were getting a good salary and it was great.
"But things slowly got worse and I decided to leave.
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"I have friends in there now who I know have not been paid in two or three weeks. Today they have been told the company is closed.
"Everyone is freaking out."
Meadbh Erne is another ex-employee to have left the firm's Liverpool branch at the end of July - before it entered administration.
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She described her experience of working there as an "absolute nightmare", adding that it was constantly understaffed and the firm "was not paying people properly".
Ms Erne said news the firm had entered administration had been met with "anger" by staff who claim to have gone without pay, and that many are fearing they will now not be able to keep up with living payments.
According to the Hashtag Hotels website, the firm was founded by Nash Cohen and Simon Gilbert, who had "become frustrated" with existing hotels "built on archaic technology and systems which lead to poor customer service and a laborious customer experience".
It promised to use "simple but unique tech themes and elements, which allows us to scale our solutions across a wide geographic area, alongside a large number of sites and guests".
Attempts were made to contact the Hashtag Hotel.