Equity for Punks investor Richard Fisher said he had written off his £12,000 stake in Brewdog and was left frustrated by what has happened.

“There’s nothing for us,” he said.

“It’s being sold at a knock-down price. But I never thought there was going to be anything left over for the Equity for Punks anyway.”

Fisher said the company had been “sold for parts” without any chance for investors to get their money out.

A number of other people who invested in Equity for Punks have also contacted the BBC to express their anger.

Unite’s Bryan Simpson said the loss of equity also affected Brewdog staff.

“A lot of these shareholders are workers with the company,” he said.

“A lot of them were investors and a lot of them put their life savings into a company where they were promised a pay back and they are now going to get pennies on the pound or probably nothing.”