AL: Yes, they’re worse than ordinary humans because there’s a sense of entitlement that turns them into monsters. But you’re absolutely right. I mean, we’ve got the problem here in Britain that we got rid of hereditary peers in parliament, and yet we still stick with the hereditary principle with the monarchs. So we are moving, I agree, to a position where it becomes more and more untenable.

The royal family in 1972 (from left): Princess Anne, Andrew, Prince Philip, Queen Elizabeth, Prince Edward and Prince Charles.

The royal family in 1972 (from left): Princess Anne, Andrew, Prince Philip, Queen Elizabeth, Prince Edward and Prince Charles. Credit: Getty Images

Fitz: While writing your own book – which you did over four years, with 300 interviews and endless freedom-of-information requests – when exactly were you most shocked? When did you lean back in the night and say: “I simply cannot believe what this man has done”?

AL: Well, clearly the 40 prostitutes visiting Andrew’s hotel room in four days in Thailand was one, as was the fact that effeminate young men were also brought to him. But I think the most shocking thing is how the palace protected him and enabled him, covering up his crimes. Whenever people went and complained to the Queen, they were sent away with a flea in their ear.

Fitz: The role of the late Queen in this interests me, as while alive it seemed she could do no wrong. But, together with Prince Philip – who you portray as a distracted adulterer – your clear view is she must bear a lot of responsibility for creating this awful man?

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AL: Yes, and I think that’s the most shocking revelation, the one that people find most hard to accept. She had a blind spot, while Prince Philip just didn’t deal with him at all. It meant that all the way through his life, he was protected. He was told he was wonderful. Anyone who didn’t say that didn’t progress in their career. So he was over-promoted in the navy, and everyone just indulged him. And he just realised: he could do exactly what he wanted, from when he was five years old to now, 65 years old.

Fitz: You are saying that the Queen was a terrible mother?

AL: I think the Queen has to take some responsibility for the monster she created. To be fair to her, her other three children are not like him, and he’s always been described as the runt of the litter.

Fitz: While the Queen was on the throne, the edifice of the monarchy seemed very, very stable. But since Charles has taken over, the whole thing seems to be wobbling. It was once famously said by an American comedian that “Jimmy Carter as president is like Truman Capote making love to Dolly Parton – the job’s just too big for him”. Is this job, similarly, just too big for Charles? It is obvious that he let the whole Andrew thing just get completely out of hand, and every move he’s made has been too mild and too reactive – a pound short and a month late.

AL: Yes. I think it’s going to overshadow Charles’ very short reign, which will be seen as a transitional reign, and the changes, if they come, will come with William. Charles is born in the 1940s. He’s an old man. He’s been used to the old system. William will change things, have a much more slimmed-down monarchy – just the direct line and get rid of titles for all the hangers on, etc. He will focus more on pastoral care rather than pomp. So I think we will see change, and I think William will come to the throne much sooner than people expect.

Author Andrew Lownie says: “I think the Queen has to take some responsibility for the monster she created.”

Author Andrew Lownie says: “I think the Queen has to take some responsibility for the monster she created.”Credit: POOL The Times

Fitz: Because of Charles’ ill health, or because he will stand down for being hopeless?

AL: William will come to the throne because Charles isn’t up to it because of his health problems. We’re already seeing power moving across to William. William is now dealing with the issues and calling the shots. Charles is just working on his legacy. William realises they need to catch up on the story, get ahead of it. He is pushing for Andrew to be stripped of everything, and face the law like an ordinary citizen.

Fitz: OK, the news has just broken that Charles has, in fact, moved [on the artist formerly known as Prince Andrew, and now to be ordinary citizen and a disgraced one at that, Andrew Mountbatten Windsor. And he is at last to be moved out of his royal digs into a private residence.] What do you make of it?

AL: It’s a stop gap.

Fitz: Will it help save the monarchy?

AL: I think it will depend if charges are brought.

Fitz: Meanwhile, the British group Republic is taking private action against Andrew for sexual assault, corruption and misconduct in public office? You must have heard all kinds of allegations against him. Have you heard these ones?

AL: There are grounds to charge him and I believe the due process of law should take place even if that means he goes to prison. The most likely [successful] charge is misconduct in public office, concerning serious wilful abuse or neglect of the power or responsibilities of the public office held.

Fitz: Where do you think that Andrew will be a year from now?

AL: Well, I would hope, actually, that he would be standing trial for misconduct in public office. But I suspect he will be in a country without an extradition treaty with Britain.

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Fitz: It’s going to get that bad – that he’ll try and do a runner, get out of Dodge, get out of England and get to a place where he can’t be extradited?

AL: Yes. Everyone has got the bit between their teeth. They’re not going to stop until this guy is really held to account. I mean, people go to prison here for tweeting. You know, there are so many things that he could be charged with, that I think the authorities will have to do something. We already are seeing politicians, who were silent, speaking out, including Conservative Party ones. We’ve got the press in full pursuit of him.

Fitz: Lenin said, “Sometimes there are decades where nothing happens and weeks where decades happen.” Is this one of those weeks, and will the monarchy ultimately survive all this?

AL: [Cutting Andrew obviously helps.] If the public outrage continues to rise it will fall.

Fitz: The hounds have indeed been set loose, no doubt in no small part because of your book on the Yorks – done by a serious historian, not a tabloid hack, which has therefore legitimised serious inquiry into his affairs. You have done the monarchy serious damage. You’re a Cambridge man, a historian, an academic, a figure of the establishment. Do you ever take flak personally in your gentlemen’s clubs for what you have wrought?

AL: Oh, absolutely. My mother-in-law has stopped talking to me. I have people turn their back on me in my clubs. I’m constantly trolled. I have my work denigrated. And I’ve just been told today that Andrew and Fergie have paid a PR firm to discredit me. But I’ve got broad shoulders, and I’ve had worse in my life. It just reflects badly on them.

Fitz: Well, keep up the fine work. Thank you very much, Andrew.

Peter FitzSimons is a columnist and author.