The husband of ex-Tory peer Michelle Mone, Doug Barrowman, is connected to a company that tax experts say should be investigated for fraud, BBC Newsnight has found.
Doug Barrowman has previously denied involvement in Vanquish Options, a firm that falsely claimed customers could write off money owed to the government.
But BBC News has identified Vanquish bosses with links to Mr Barrowman and seen emails sent by Vanquish from the same IP address as his Isle of Man HQ.
Mr Barrowman has denied any wrongdoing.
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