Trafficking and forced labor follow patterns which could be followed to put an end to the practice.

I suspect that the reason the UK does not trace these patterns and put an end to the practice is a lack of will. For instance, the major supermarket chains pressure farm to cut prices, and the supermarkets will be happy if farms do that by means of forced, trafficked workers — as long as the supermarkets are not punished for it.

If supermarkets were fined 100 times the retain value of any products they sell that are found to have been made with forced labor, they would put an end to the practice for sure.