Another reason why UK workers are being forced to take low pay/low productivity jobs: https://www.thersa.org/discover/publications-and-articles/rsa-blogs/2015/05/will-the-real-self-employed-please-stand-up/ Worse, these firms gain an unfair advantage over their competitors who do play by the rules, in turn encouraging the latter to join them in surreptitious behaviour. The end result is a race to the bottom, with knock-on consequences for training, skill levels and overall productivity.