People with enough money that they have to hide it in offshore accounts. If u are rich enough u have to hide money In bank accounts the government can't do anything about u probably should be able to pay the shortfall in tax u are re creating. If you are rich enough to do that, the whole "living wage" is not going to remotely affect u, unless it means u have to up ur cleaners money or something
My cleaner does very well actually she charges £15 and hour.
And why do you suppose they hide it, would it have anything to do with the taxes they and we pay take the complete piss.