I think this says it all..
Southwark Crown Court heard how the victims, all female or transgender, were recruited in their native Thailand by the organised gang before being brought into this country, where their phones and official papers were confiscated.
They were taken to buildings in Kensington and Chelsea or Westminster and made to work long hours, handing over a large amount of their earnings.
The victims, who spoke little or no English, were forced to become prostitutes, in some cases providing unprotected sex to increase their popularity on seedy websites, the court heard.
When they complained, the victims were threatened by the gang with being exposed to the authorities as illegal immigrants.