One such restaurant a few miles from me has been raided 3 times in last 10 years. Every time they’ve found illegal workers.
Read the article, they didn’t find anyone thus wasting taxpayers’ money and, by very publicly conducting the raids, potentially causing reputational damage to hardworking and law abiding businesses- something I’d have thought you would be against.
I don’t think a system where anyone can send an anonymous tip and have the heavies sent in is fit for purpose.