Royal biographer reveals how he unearthed Andrew, Ferguson dark secrets

Royal biographer Andrew Lownie, who exposed Prince Andrew and Sarah Ferguson's most intimate secrets in his new book 'The Rise and Fall of the House of York,' revealed his struggle to unearth the shocking details about the ex-couple.

The author, in an interview with Daily Mail's royal newsletter Palace Confidential, explained he approached people to know the truth about the pair and their scandals.

He contacted over 3,000 former school contemporaries, staff, colleagues and associates of the couple. "Of whom 300 spoke to me," said Lownie.

He went on to say: 'They felt it was time to challenge the York family’s carefully curated narrative. It is difficult because there tends to be a code of silence about the royals (no one wants to be cast out of the privileged circle)."

Lownie uncovered a long list of the York family's secrets, including Andrew's alleged sexual habits and friendship with convicted paedophile Jeffrey Epstein.

He went through the hell to get the information, adding: 'Additionally, their staff have to sign NDAs, royals are not fully subject to the Freedom of Information Act and there are strict limits on what questions MPs can ask about them in Parliament.

'I could also add the letters I received threatening to sue me, before a word of the manuscript had been seen. Charming people.'

'I would keep the whole York family at a distance,' Mr Lownie warned.

The author continued: 'Fergie should not be invited to events and the daughters should not be made working royals. I believe there are more scandals to emerge.'

In the book - Ferguson, popularly known as Fergie - is alleged to have sought out a romance with golfer Tiger Woods and Hollywood A-listers after her divorce from the Duke of York.

In extracts serialised in the publication, the author alleged that Ferguson had a list of men whom she was keen to be romantically involved with.