Ms Giuffre was 16 at the time, however when asked how old she looked to him, Mr Alessi guessed “14 or 15”. “She had long blonde hair and a long white outfit like a nurse’s uniform.”

Mr Alessi said he saw Ms Giuffre, now 38, around the house after that on a few occasions  with her boyfriend. He says Ms Maxwell told him to ask the boyfriend to wait outside in the car.

Ms Giuffre has brought a civil lawsuit against the Duke in New York for sexual abuse and battery. He has denied the allegations.

Ms Maxwell, the 59-year-old British socialite, has denied charges of trafficking minors, but Mr Alessi claimed he picked up young girls on her orders. The court also heard that Ms Maxwell and Epstein “constantly flew other girls” to the financier’s mansion.

He also recalled being instructed by Ms Maxwell to pick up the accuser known as Jane, who was 14 at the time and alleged on Tuesday she was molested by Epstein and Ms Maxwell with sex toys.

Mr Alessi, who said he often worked 16-hour days, said he was given a household manual by Ms Maxwell of how Epstein and the British heiress liked the mansion to be kept.

The manual said he needed to “anticipate the needs of Mr Epstein and Ms Maxwell”.

“Remember that you see nothing, hear nothing, say nothing. Respect their privacy,” read another bullet point.

In a remarkable afternoon of testimony, a copy of Ms Maxwell and Epstein’s famous “little black book” containing “hundreds of hundreds” of names and contact details of friends of the pair was introduced into evidence.

The book included the names and contacts of people that the house staff would ring to organise massages for Epstein.

Mr Alessi claimed that he laid out “exotic oils” which had been bought by Ms Maxwell in Epstein’s bathroom for the massage sessions.

Mr Alessi said that Epstein regularly had three massages a day from three different women. One in the morning, one in the afternoon and one at 10 or 11pm in the evening “after he had been to the movies.” He said that they were organised by Epstein himself, or by Ms Maxwell.

Afterwards, his job was to clean up the room. He said on multiple occasions he said found a sex toy in the room, which he was instructed to put in a wicker basket in Ms Maxwell’s wardrobe “where it was kept”. Also in the basket were pornographic tapes and a black leather costume, he said.

Mr Alessi also noted that there were “many photographs of topless women on Ms Maxwell’s desk” which he said appeared to be taken around the pool at the Palm Beach home. The only person he ever saw with a camera was Ms Maxwell, he said.

The court also heard on Thursday that Ms Maxwell and Jeffrey Epstein “constantly flew other girls” to the financier’s Palm Beach mansion.