@WhyDoYouAsk
So you’re talking specifically about rogue tradesmen and unethically/ unlawfully run ‘business’ ventures...?
If that’s the case, they should be shut down.
But people can accidentally be "rogue" simply by not doing thorough research as to their legal obligations. They don't need to have set out to be shoddy/criminal.
I.e. they may not understand distance selling regulations/consumer rights - loads of posts on SM about firms refusing to accept returns, refusing to refund return postage etc., which are a clear violation of the customer's legal rights.
They may unwittingly not have the right insurance, i.e. no public liability insurance, no business insurance when using their personal car, no employers liability insurance when engaging staff/subcontractors, etc.
They may have poor grasp of tax laws, so charge VAT when not registered, or claim expenses they're not allowed to against their tax, or not register for VAT when they are legally required to do, or engage workers as self employed when they should be employees.
They may think that they're allowed to sell food made in their own kitchens, without the necessary food standards training/knowledge or with a non compliant food preparation area.
Or they may be trading in a regulated trade without the necessary authorisations. Or be a tradesmen taking "trade waste" away from a customer's premises without the necessary waste transfer licence.