@MarshaBradyo To answer your last question, I think this sums it up well as a brief intro:
Sadly, the UK’s anti-slavery system is not currently set up to support people who are being exploited. The UK’s ‘hostile environment’ and recent legislation, such as the Nationality and Borders Act, mean people trafficked from abroad are often treated as immigration offenders, instead of being given the support and care they need to recover from their ordeal. Cuts to public services further hamper efforts to prevent exploitation, and mean the authorities often lack the resources they need to investigate trafficking cases.
www.antislavery.org/slavery-today/slavery-uk/
So - if the trafficking victims are properly supported they can “whistleblow”/give details about the criminals that are trafficking them, so authorities can find and prosecute the criminal network. If the victims are criminalised, this is much harder to achieve.
The impact of cuts to services is well explained in that quote above.
The current Home Office decision to treat trafficking as purely an immigration issue massively weakens protection for British children caught up in trafficking, while criminalising irregular arrivals (asylum seekers) increases their vulnerability to trafficking. More on that here:
Immigration control is seen by some as a way of preventing trafficking, but while border officials can play an important role in identifying trafficking, all victims – adults or children – should not be defined by their immigration status. At the same time, poor safeguarding structures and a lack of safe, legal routes for migration to the UK means many children become more vulnerable to exploitation and trafficking while undertaking dangerous journeys. Once they are in the UK, harsh policies that criminalise irregular migration also increase children's vulnerability to trafficking and prevent them from seeking assistance from authorities.
www.ecpat.org.uk/faqs/how-can-child-trafficking-be-prevented
That link goes on to
outline some solutions. You might also be interested in the outgoing independent anti slavers commissioner’s report, and I might mention again that the government failing to install a new independent anti slavery commissioner is unlawful 😉