Officers from the Unit arrested the man and woman, both 67, at their south London home as part of an investigation into slavery and domestic servitude, the Metropolitan Police said. They are in custody.
The “highly traumatized” victims — a 69-year-old Malaysian woman, 57-year-old Irish woman and 30-year-old Briton — have been taken to a place of safety, the said in a statement.
Police said that they had been alerted in October to the situation by Freedom Charity, which had received a phone call from a woman saying “she had been held against her will in a for more than 30 years.”
“We applaud the actions of Freedom Charity and are 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,” Detective Inspector Kevin Hyland said.
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.