The Duke of York has been financially cut off from his brother King Charles, according to an updated royal biography.

Prince Andrew has been under financial pressure over the running costs of his 30-room home at Royal Lodge in Windsor.

But it is now claimed by royal writer Robert Hardman that the king has decided to stop paying for Prince Andrew’s home security or provide a personal allowance. Together, these costs are thought to run into many millions of pounds a year.

Buckingham Palace declined to comment on the book’s claims, which were reported by the Daily Mail.

The claim about Prince Andrew’s income cut comes in an updated version of King Charles’ biography written by royal author Robert Hardman.

It says the Keeper of the Privy Purse, which looks after the royal finances, has been ordered to end Prince Andrew’s personal allowance and security payments.

It had already been reported by the BBC that the King was not prepared to subsidize Prince Andrew indefinitely, but this suggests that a final decision has now been made to stop the funding.

The prince, who no longer has an official representative, has so far not responded to the claims of the loss of this funding.

But that would mean he would have to find his own way to pay for the upkeep and security of the Royal Lodge, a 19th-century listed building in Windsor. It is believed there would be high costs to maintain the large property, which is leased from the Crown Estate.

This financial pressure on the prince comes after the release of two separate films this year – made by Netflix and Amazon – about his 2019 BBC Newsnight interview in which he was asked about his relationships with US sex offender Jeffrey Epstein .

The prince resigned as a working royal and later lost his military titles and royal orders and retired to private life in the Royal Lodge. One commentator described him as “de-royal”.

Although the King is now said to be taking action on the funding, sources have previously suggested it was part of a longer-term question, dating back to before the King’s reign, about arranging 64-year-old Prince Andrew’s future residence and finances.

Instead of the sprawling home at Royal Lodge, where Queen Elizabeth previously lived, it has been suggested the prince could move into the smaller Frogmore Cottage, once home to Prince Harry and Meghan, as it would have much lower maintenance and security costs.

Frogmore Cottage can be used at the monarch’s discretion, while the Royal Lodge remains a leasehold property, operating independently of the Crown Estate, which could be used for other commercial purposes.

But the prince has his own personal lease at Royal Lodge, which runs until 2078, and if he can pay his own way, he can stay in the home, which he has shared with his ex-wife Sarah.

Why isn’t Prince Andrew moving out

The prince paid significant sums upfront when he took over the lease for the Royal Lodge in 2003, meaning lower costs for him in the long run, making it less of an incentive to leave now.

The house was in need of renovation and he undertook the initial repairs of over £7.5 million. There was also a one-off payment of £2.5 million to buy out the annual rent.

It also made a one-off payment of £1m to its owners, the Crown Estate, according to National Audit Office documents.

But there was a clause that if he left the house within 25 years of the start of the lease, he would be reimbursed for his initial payment for repairs – with this amount shrinking each year.

With less than four years left on that deal, he would not be able to recoup much of the £7.5m he spent on refurbishing the house – another incentive not to give up the lease.

But there are still high security and maintenance costs – and Robert Hardman’s books say the King will no longer collect the bills.

A source is quoted as saying: “The duke is no longer a financial burden to the king.”