Prince Andrew was paid tens of thousands of pounds by a British businessman linked to a wealth management company which ripped off pension savers.
The King's brother, who last week said he would no longer use his titles including the Duke of York, has long faced questions about his finances and how he is funding his lifestyle.
He stepped down as a working royal in 2019 because of his association with the sex offender Jeffrey Epstein and no longer receives any money from the King.
Although his finances remain opaque, details of some of his arrangements and controversial business associates have occasionally emerged from court cases.
Prince Andrew did not respond to requests for comment.
