The women were "basically domestic slaves," Aneeta Prem of Freedom Charity told the BBC.
Prem also told Sky News that the alleged victims were able to walk out of the house after receiving help from the charity. "We started in-depth to talks to them when they could. It had to be pre-arranged," Prem said.
"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."
The two suspects are considered the "heads of the family," Prem said, adding that the rescued women believed they were in "massive danger" and were "absolutely terrified."
The Freedom Charity is a UK-based organization that aims to "raise awareness and prevent child abuse, keeping children safe," according to its website.