Russell Brand is alleged to have joked and made up songs about evil child murderer and paedophile Ian Huntley during a threesome with two women.
He is also said to have verbally abused one of the women about her appearance when she refused to have sex with him later in the evening.
According to The Times, Lisa – not her real name – met Brand in 2008 when she was in her early twenties.
She claimed that the A-Lister invited her and one of her female friends to his house and they proceeded to have a threesome.
The woman claimed that her and her friend’s names sounded loosely similar to “Holly and Jessica” – the two girls murdered by Ian Huntley in 2002.
The Grays-born comic-turned-actor proceeded to reference this similarity as the trio engaged in sex.
Lisa told The Times: “He started talking about Ian Huntley, the paedophile and child killer, and mentioned it quite a few times, like in a joking way, but also made up a whole song about it.
“I just couldn’t understand why you would be able to have sex and talk about a child killer at the same time.”
The celebrity wellness advocate has denied allegations of sexual assault, rape and abuse made against him by four women, but according to the publication did not respond to the allegation made by Lisa when it was put to him.
Lisa claimed that in a separate incident, Brand invited her to his house to “finalise” an arrangement in which he would provide her with a quote for a book she was writing.
Upon arriving at his home, Lisa said that another woman, whom she didn’t know, was already there and it was clear she was expected to have a threesome with the pair.
She said: “It was quickly quite clear that I was there to have a threesome with him and this woman that I’d never met. And I was just like, no. No.”
Lisa said that when she refused to engage in the activity, Brand “took it quite badly” and was “very instantly quite annoyed”.
The woman claimed that she was wearing an Ed Hardy hoodie and skinny jeans. Brand, she alleges, mocked her dress by asking her why she had “turned up here dressed like a cleaner”.
The claims come days after explosive claims were made about Russell Brand – who was previously married to popstar Katy Perry – in a Channel 4 Dispatches documentary.
The 48-year-old has been accused of rape, assault and emotional abuse over a period of seven years between 2006 and 2013, when he was at the height of his fame working for the BBC, Channel 4 and in Hollywood films.
It comes as the Metropolitan Police confirmed it has received a report of an alleged sexual assault 20 years ago in Soho, in London’s west end after allegations were made in the Sunday Times and Channel 4 Dispatches investigation against him.
Mr Brand posted a video on YouTube and Twitter/X in which he denied the allegations.
He said: “I’ve received two extremely disturbing letters, or a letter, and an email, one from a mainstream media TV company, one from a newspaper, listing a litany of extremely egregious and aggressive attacks, as well as some pretty stupid stuff like, my community festival should be stopped, that I shouldn’t be able to attack mainstream media narratives on this channel, but amidst this litany of astonishing, rather baroque attacks are some very serious allegations that I absolutely refute.
“These allegations pertain to the time when I was working in the mainstream, when I was in the newspapers all the time, when I was in the movies, and as I’ve written about extensively in my books, I was very very promiscuous.
“Now during that time of promiscuity, the relationships I had were absolutely, always consensual.”
He adds: “I was always transparent about that then, almost too transparent, and I’m being transparent about it now as well, and to see that transparency metastasized into something criminal, that I absolutely deny, makes me question, is there another agenda at play?”
