- 45 updates
There are concerns that the number of people treated like slaves in London is growing. Helping them escape their captors is just the first step in getting them to freedom.
Our Senior Correspondent Ronke Phillips has been talking to one victim - who we can't identify - who managed to escape from a life of servitude.
Former Olympics minister Dame Tessa Jowell, who represents Dulwich and West Norwood, has been briefed by Scotland Yard detectives and Lambeth borough commanders about the case. She said:
The founder of the charity that helped the alleged slavery victims told ITV News the term "invisible handcuffs" shows "there is more psychological control over how people are kept" in domestic servitude cases.
Freedom Charity founder Aneeta Prem said, "It doesn't mean people in domestic servitude or domestic slavery are in chains or shackles".
Ms Prem added, "I think the women have gone through the most horrendous emotional trauma over the years ... and it's going to be a very long journey to get them to start to rebuild their lives".
Detective Inspector Kevin Hyland said the whole of the Metropolitan Police's human trafficking unit - 37 officers - are now working on this investigation.
DI Hyland said: "Whilst we do not believe that they have been subjected to sexual abuse, we know that there has been physical abuse, described as beatings.
"However there is nothing to suggest that the suspects were violent to others outside of the address".
The police search of the address in south London took 12 hours and 55 bags of evidence were seized, amounting to in excess of 2,500 exhibits, he added.
Police do not believe the case of three women allegedly held against their will at a house in south London falls into the category of sexual exploitation, or what is traditionally referred to as human trafficking.
"It is not as brutally obvious as women being physically restrained inside an address and not being allowed to leave," Commander Steve Rodhouse of the Metropolitan Police said.
Police are trying to understand "what were the invisible handcuffs being used to exert such a degree of control over these women", he said, adding that to label the investigation as domestic servitude or forced labour is "far too simplistic".
Police investigating allegations of slavery at a house in London said that to the outside world they may have appeared to have been a "normal family".
Commander Steve Rodhouse said police are "unpicking a story that spans at least 30 years".
"This does mean that over the course of many decades the people at the heart of this investigation, and the victims, would probably have come into contact with public services, including our own", he said. "That's something we need to examine fully."
Police said two suspects bailed in connection with an investigation into slavery and domestic servitude have been in the country for "many years" and that the case "so far is unique to us".
They have been arrested on suspicion of immigration offences as well as in connection with the investigation into slavery and domestic servitude, Scotland Yard said.
The victims - a 30-year-old British woman, a 57-year-old Irish woman and a 69-year-old Malaysian woman - are being looked after in a safe location.
The three women allegedly held against their will for at least 30 years were emotionally controlled rather than physically restrained, Scotland Yard has said.
The two suspects bailed in connection with an investigation into slavery and domestic servitude in south London were previously arrested in the 1970s, Scotland Yard has said.