The UK can, and previously has, clamped down on this kind of thing AND backdated the law as it’s classed as a clarification that they were breaking existing tax

The UK can, and previously has, clamped down on this kind of thing AND backdated the law as it’s classed as a clarification that they were breaking existing tax law provisions ... in some cases contractors had fines and penalties going back 20 years. IR 35 is what a lot of these companies claim to shield you from ... but it’s notoriously complex.