A friend of mine had office space in a building which also hosted a scummy marketing company. It was a group of people (I think about 10) who folded their company at the first sign of trouble, usually 12-18 months in, then the next person in the group set up a new company doing the same thing. Even if one of them was banned from being a company director, that only lasts a certain length of time (7 years?) so they were always clear again by the time their turn came back round.
Directors have to be personally liable for criminal acts, and that has to actually be enforced. The current situation is untenable - this company made enough calls to contact everyone in the UK, making the world a worse place, and nothing will be done about it. Again.