mobile numbers beginning with 07 have always been...

mobile numbers beginning with 07 have always been ordinary private or business numbers at basic charge rate. Why then did Ofcom allow mobile numbers beginning 070 to be high charge or money making numbers. They have become a common focus of fraud on trading sites freecycle etc. This is an example of a so called regulator failing to preform the most basic of protection, or did someone get a nice kickback payment for allowing this, how much money have 070 made for their operators