Three traumatised women have been rescued from a house in South London, where they have been held as slaves for years.
According to Scotland Yard, officers have arrested a man and a woman, both aged 67, as part of an investigation into slavery and domestic servitude.
The rescue came after the Freedom Charity, which aims to advise and support victims of forced marriages, got in touch with police after receiving a call following a TV documentary on forced marriages.
"They felt they were in massive danger"
Aneeta Prem, Freedom Charity founder, said the alleged victims - who are believed to have suffered been abused both physically and mentally - were able to walk out of the property after extensive calls with the charity.
She told Sky News: "We started in-depth to talks to them when they could, it had to be pre-arranged. They gave us set times when they were able to speak to us.
"It was planned that they would be able to walk out of the property. The police were on standby.
"They were able to leave the property, but it was done in such a way... it was a very, very excellent way it happened."
Ms Prem said the two people arrested were considered the "heads of the family", and that the women were "absolutely terrified" of them.
She added: "They felt they were in massive danger. I don't believe the neighbours knew anything about it at all. It was just an ordinary house in an ordinary street.
"They were very restricted on everything they could do. We are absolutely thrilled this has happened."
The three women - a 69-year-old Malaysian woman, a 57-year-old Irish woman and a 30-year-old British woman - have since been taken to a place of safety by police, where they currently remain.
"We have launched an extensive investigation to establish the facts surrounding these very serious allegations"
Detective Inspector Kevin Hyland, from the Metropolitan Police's human trafficking unit, said: "We applaud the actions of Freedom Charity and are working in partnership to support these victims who appear to have been held for over 30 years.
"We have launched an extensive investigation to establish the facts surrounding these very serious allegations.
"A television documentary on forced marriages relating to the work of Freedom Charity was the catalyst that prompted one of the victims to call for help and led to their rescue."
Aneeta Prem added that the Freedom Charity will offer "all the help and support that can be" to the three women, adding that she was "so grateful" that they had finally rung for help.
Find out more about the Freedom Charity's work here.