What has to be remembered is that whilst there is the potential to earn huge loads of RAW CASH, this in turn CANNOT easily be invested in any form of investment (a bank account, fixed deposit, shares, or worse still a property) as you have then laid an easy trail for HMRC to enquire the source of that income. Even buying a property requires due diligence work by Solicitors/Accountants to ensure that they are well satisfied as to where you have got the money from before they act on your behalf, whether its to act as your accountant or act for you to purchase a property. It is a requirement for Solicitors and Accountants under MLA, Money Laundering Act.
Coming under the scrutiny of HMRC results in your Income being ascertained and then being taxed, and all your investments are then under their umbrella. Any income from them is also taxed, leaving very small imcome capable of growing into the target of £1million.