Model, 20, says sex-obsessed Andrew ‘wanted me to engage in kinky sexual activity’ and female staff ‘were warned to stay away from him’

Royal biographer Andrew Mountbatten-Windsor claimed he asked a 20-year-old model to “engage in strange sexual activity” with him so he could live out his “wildest fantasies”.

The young woman met the 65-year-old former Duke of York at a charity event in the late 1980s, Andrew Lownie said in his explosive book serialized by the Mail.

She claimed Andrew, who was stripped of his title of Prince on Thursday, had ‘no boundaries’ and had an open relationship with his wife, saying he had slept with her twice.

Lownie is the author of an unauthorized biography titled: The Rise and Fall of the House of York, which chronicles Andrew’s spectacular fall from grace.

In the book, the model is quoted as saying: ‘He wanted me to participate in explicit sexual activity. It had no limits.

‘He told me that he had an open prenup with his wife. After returning to London I never heard from him again.

‘I felt like he was using me for a few days so he could live out his wildest fantasies.’

Moreover, it was rumored that Andrew, who was nicknamed ‘Randy Andy’ at school and was thought to have slept with 1000 women, had an affair with an employee at home.

Andrew in a photo of Virginia Giuffre and sex trafficker Ghislaine Maxwell reportedly taken in 2001, when Giuffre was 17

One nanny said she left because of unwelcome behavior and staff were advised to stay away from her.

‘I was warned to stay away from it when I started. “Sometimes he would enter staff rooms,” he said.

‘It seems everyone was aware of his behavior but little was done about it.’

The employee added: ‘Staff were gossiping constantly, but a tape device was found in a flower pot in the staff area so it was difficult to talk after that.’

And according to Emma Gruenbaum, a masseuse at Wentworth Golf Club, where Andrew frequented, Andrew often arranged for her to get a massage at the Royal Lodge.

She said Andrew insisted on getting naked and tried to hug her despite her objections and asked her questions about her sex life.

One time, while I was adjusting the massage table, the man said: ‘Hey, nice breast. Are you taking this on?’

She remembered talking about anal sex and making anal sex jokes the whole way. He asked me when was the last time I had sex. He continued.

‘This is not normal behavior for a professional sports therapy session. ‘He was a constant sex pest from the beginning.’

In 2010, Andrew was photographed with 25-year-old Spanish-Filipino model Alexandra Escat on a luxury yacht off the coast of Sardinia.

Andrew Lownie (pictured) claims the disgraced former prince brought 40 prostitutes to his five-star hotel in just four days during a taxpayer-funded trip to Thailand

Lownie claims Andrew Mountbatten-Windsor (photo taken in Thailand in 1999) ‘has no moral boundaries’

It comes after Lownie claimed yesterday that the disgraced former prince brought 40 prostitutes to his five-star hotel in just four days during a taxpayer-funded trip to Thailand.

Lownie said in a Mail podcast: ‘In 2001 Andrew was 41, having a mid-life crisis and actually starting to chase a lot of women.

‘He uses his role as Trade Ambassador, paid for by taxpayers, to go on these trips.

‘He always sets aside two weeks of ‘special time’. So we pay for his holiday, and then he goes and does something.

‘There was a famous trip to Thailand for the king’s birthday celebrations. Andrew is representing his country and insists on staying at a five-star hotel instead of staying at the embassy as he usually does.

‘Andrew brought in 40 prostitutes in four days. This was all made possible by diplomats and others.’

On Thursday, Buckingham Palace announced that King Charles had launched a formal process to strip Andrew of his title as Prince and gave him formal notice to vacate the Royal Lodge.

In a cold statement they said: ‘Her Majesty has today begun a formal process to remove Prince Andrew’s Order, Titles and Honors.

Prince Andrew represented the British monarch at the diamond jubilee celebrations of the King of Thailand in 2006.

Aerial view of Andrew’s current home – Royal Lodge in Windsor

‘Prince Andrew will now be known as Andrew Mountbatten Windsor. To date, his lease at Royal Lodge has provided him with legal protection to continue his residence.

‘Formal notice has been given to abandon the lease and he will be moving to alternative private accommodation.

‘These censorships are deemed necessary even though he continues to deny the allegations against him.

‘Her Majesty wishes to make it clear that her thoughts and utmost sympathies are with the victims and survivors of all forms of abuse and remain with them.’

Andrew is understood to be ‘optimistic’ about the dramatic change in his circumstances as a result of the latest revelations against him.

These include Andrew telling his friend, pedophile Jeffrey Epstein, ‘we’re in this together’; This was exclusively revealed by the Mail.

The family of Virginia Giuffre, who claims that she was kidnapped by Andrew at the age of 17 and made to have sex with him, is now calling for her to face justice in the United States.

Princesses Beatrice, 37, and Eugenie, 35, will retain their royal titles even though their father is no longer a prince.

Royal commentator and biographer Angela Levin told the Daily Mail the pair would want to stay as far away from him as possible, but they may have to “step in” and parent their father if he becomes “desperate”.

He said: ‘I think Andrew will feel very devastated about what happened. He was always very arrogant and confident because he was so smart.

‘It’s such a shame for him and his own children that everything has been taken away from him and that it’s happening in front of your children who are grown up and can understand what they’re being accused of. If he has no one else he will have to lean on them.’