With the number of potential modern slavery cases in England and Wales at a record level, File on 4 investigates how vulnerable people are being targeted and exploited by organised crime groups for cheap labour.

Police estimate that there are tens of thousands of victims of modern slavery in the United Kingdom, being forced to work and live in inhumane conditions with little hope of escape.

Investigators whose job it is to protect workers from exploitation reveal to File on 4 that the care industry has become their top priority in the past 18 months.

Datshiane Navanayagam finds out why and asks whether the systems in place to support victims are working.

Reporter: Datshiane Navanayagam