British police continued searching Andrew Mountbatten-Windsor’s former home Friday, a day after the disgraced former prince was held in custody for almost 12 hours over his dealings with late pedophile Jeffrey Epstein.

A huge police presence remained sweeping Royal Lodge, the stunning 30-room mansion in the grounds of Windsor Castle that was Andrew’s home for 20 years before he was forced out over his Epstein scandal.

A large black tent was put up at an entrance to give privacy to cops expected to remain working there until at least Monday, according to BBC News.

A heavy police presence also remained at Andrew’s new home in Sandrigham, the private estate of his brother King Charles III, according to the BBC. However, the search of that house had been completed, police said.

The disgraced ex-prince had only recently been forced to move over the ever-growing scandal of his close friendship and alleged trading of documents with Epstein.

He had been planning to celebrate his 66th birthday at his new home Thursday when police swooped at around 8 a.m. for the first arrest of a member of the UK’s royal family in more than 400 years.

Andrew has for years denied knowing anything about Epstein’s crimes or having sex with longtime accuser Virginia Giuffre.

He was arrested Thursday after the latest Epstein files allegedly showed him passing to Epstein confidential trade information that he only had access to as a UK trade envoy.

One, dated November 2010, appeared to be forwarded by Andrew five minutes after he had received it. Another a few weeks later appeared to show him sending Epstein a confidential brief on investment opportunities in the reconstruction of Helmand Province, Afghanistan.

Andrew was treated like a “common criminal” while in custody, and made to give DNA swabs, fingerprints, and a mugshot was taken, according to the Sun.

He was then seen grimacing in the back of his chauffeur-driven car once finally released after almost 12 hours in custody.

“It’s an extraordinary fall from grace,” Mick Neville, a retired detective chief inspector, told the Sun.

The ex-prince remains under investigation, which means he has neither been charged nor exonerated by Thames Valley Police, the force responsible for areas west of London.

Other police forces in the UK are also conducting separate investigations into him and Epstein.

Andrew has not commented on the latest allegations or his arrest. His brother, King Charles III, has vowed to help where needed, saying that the “law must take its course.”

More coverage on ex-Prince Andrew Mountbatten Windsor’s arrest

Andrew’s arrest follows years of allegations over his links with Epstein, who took his own life in a New York prison in 2019.

Experts said misconduct in a public office is notoriously difficult to prove.

“Firstly, it must be determined if Andrew Mountbatten-Windsor was in a role within government that constitutes the title of public officer,” said Sean Caulfield, a criminal defense lawyer at Hodge Jones & Allen. “There is no standard definition to clearly draw on.”

The Crown Prosecution Service will ultimately make a decision about charging him.

Andrew Gilmore, a partner at Grosvenor Law, said prosecutors will apply the two-stage test known as the “Code for Crown Prosecutors.”

“That test is to determine whether there is a more realistic prospect of a conviction than not based on the evidence and whether the matter is in the public interest,” he said. “If these two tests are met, then the matter will be charged and proceed to court.”

The arrest is not over long-running allegations from Virginia Giuffre, who claimed she was trafficked to Britain to have sex with the prince in 2001, when she was just 17.

Still, Giuffre’s sister-in-law Amanda Roberts said she was overjoyed when she got a phone call at 3 a.m. telling her the news of the arrest — only pained by the fact she could not share the feelings of “vindication” with Giuffre, who died by suicide last year.

“We can’t tell her how much we love her, and that everything that she was doing is not in vain,” Roberts added tearfully.

With Post wires