Four arrests in Hertfordshire trafficking probe
Four people have been arrested in raids on properties in Hertfordshire and London as part of an investigation into human trafficking.
A man and woman from Moor Park, near Rickmansworth, were held on suspicion of two offences including forcing a person to live in inhumane conditions.
A 37-year-old woman was removed from the house and is now being cared for, police said.
In London a woman was arrested in St John's Wood, and a man in Harrow.
All four suspects are being held at a north London police station.
Police believe the woman was trafficked to the UK in 2005 and forced to work in London before being trafficked to a property in Moor Park, Hertfordshire.
The victim is being cared for by a charitable organisation.
Det Ch Insp Shirley Sargent, who led the investigation for Hertfordshire Constabulary, said: "Human trafficking, particularly in the form of servitude, is a hidden crime and we will do everything we can to ensure this immoral trade is stopped.
"But in order to do this we also need help from the public."