We have two schemes.
The scheme you're talking about is called the “recognized seasonal employer”. Those employers have to jump through quite a number of hoops to be accredited. They are audited on their pastoral care, their plans and their accommodation. They have to provide worker accommodation and that has to be of a suitable standard.
They also have to demonstrate to us that their internal processes are compliant in terms of things like minimum wage and wage deductions. If they don't and they are audited by us, they may lose the ability to hire migrant workers, which basically means that they're dead in the water as a business. There's a strong incentive to comply.
For the broader labour market, we have what's called an “accredited employer” scheme. It's quite similar. Employers have to demonstrate to us that they have all the checks and balances in place to prevent migrant exploitation. What that does is allow us to investigate, monitor more and audit their processes on a risk-based cycle to ensure they're behaving properly.
The final thing it does—and I'm conscious of time—is that those who operate outside those schemes are deemed to be “high risk” by us. That allows us to prioritize them and pay them a lot of attention, because generally they're the ones who will be committing the exploitation.