A married prison guard has admitted having sex with an inmate in an X-rated video recorded inside a cell at HMP Wandsworth.
Linda De Sousa Abreu, 30, of Fulham, West London, was on duty when she entered the prisoner's cell on June 27 and had sex with him.
The encounter was filmed by another inmate and lasted for almost five minutes.
The mother was arrested at Heathrow Airport and was due to catch a flight to Madrid having notified the prison of her travel plans.
De Sousa Abreu, who has appeared on TV swinging programs and has an OnlyFans account, pleaded guilty to one count of misconduct in a public office at a hearing at Isleworth Crown Court today.
The prosecution's case was that De Sousa Abreu had wilfully committed misconduct in a public office by abusing her position as a prison officer to have sex with an inmate.
Linda De Sousa Abreu (right) arrives at Isleworth Crown Court in West London this afternoon
After the video went viral on social media, De Sousa Abreu was identified by HMP Wandsworth staff and was arrested by the Metropolitan Police at Heathrow Airport
She was on duty when she entered the prisoner's cell on June 27 and had sex with him
The encounter was filmed by another inmate and lasted for almost five minutes
Misconduct in a public office carries a maximum sentence of life imprisonment.
After the video went viral on social media, De Sousa Abreu was identified by HMP Wandsworth staff and was arrested by the Metropolitan Police at Heathrow Airport.
She telephoned the prison as she fled to the airport to say that she was not returning to work and that her husband would return her equipment.
De Sousa Abreu had previously appeared on a Channel Four documentary about threesomes and orgies, MailOnline revealed.
She was seen wearing uniform during the explicit clip, which begins with her performing a sex act on an unidentified prisoner at the Category A Wandsworth jail.
The footage then shows her having sex with the prisoner while his cellmate films on a mobile phone. Footage of the cell shows a TV and piles of clothes heaped over a bunk bed.
Linda De Sousa Abreu had previously appeared on a Channel 4 program about orgies
Footage of the cell shows a TV and piles of clothes heaped over a bunk bed
The friend who is smoking while recording says: 'Guys we've made history, this is what I'm telling you.'
The prison officer's radio, left on a side table, crackles constantly with her colleagues heard on the other channels above the din of the other prisoners on the landing unaware of what is going on in the cell.
At one point, someone appears to try to come into the cell, at which the man filming, can be heard saying to the person on the other side of the door 'give me a minute, one second.'
The prisoner filming tells his friend to carry on and then pans the camera round momentarily and, grinning, says: 'This is how we roll in Wandsworth.'
And her sibling, who is a personal trainer from London, told MailOnline how she had to block fans of her sister from her own social media after she appeared on the swingers show.
Judge Martin Edmunds, KC, the Recorder of the Royal Borough of Kensington and Chelsea, bailed De Sousa Abreu ahead of sentence on November 7.
He also ordered a pre-sentence report.
De Sousa Abreu is subject to 'stringent' bail conditions. Her Portuguese passport must remain in police possession and she is not apply for any international travel documents.
She is barred from entering any UK travel ports and made her subject to an electronically monitored curfew between 7pm and 9am each day.
Her lawyer Gayathri Yogarajah earlier described her a 'young mother' and 'a person of good character'.
A police investigation was launched on June 28 after officers were made aware of a video said to have been filmed inside HMP Wandsworth in South London.
An arrest was made later that day and De Sousa Abreu, who holds a Portuguese passport, was charged with misconduct in public office on June 29, police said.
Prison officer Linda De Sousa Abreu (pictured) was charged with misconduct in public office
A court artist's drawing of Linda De Sousa Abreu at Uxbridge Magistrates' Court on July 1
The footage was filmed at HMP Wandsworth in South London (file picture)
Tetteh Turkson, of the Crown Prosecution Service, said: 'This was a shocking breach of the public's trust. De Sousa was clearly an enthusiastic participant who wrongly thought she would avoid responsibility.
'The CPS recognises there is no excuse for any prison officer who conducts themselves in such a manner, and we will never hesitate to prosecute those who abuse their position of power.
'After working closely with the Metropolitan Police to build the strongest possible case, De Sousa had no option but accept she was guilty. She will now rightly face the consequences of her actions.'
The judge told De Sousa Abreu: 'I'm going to adjourn sentencing in your case to 7 November 2024 at 2pm, with a time estimate of one hour and thirty minutes.'
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