Reason's not to:
Stellios- wasn't self made, used his dad's money, thinks he owns the word 'Easy'!
Richard Branson- He tried this in the USA some years ago, the series was pants!
Gordon Ramsay- Who the f*** would want to be an Apprentice to this guy, being swore at and preached to all day by a sandwich man, captain of industry he is not!
Carol Vorderman- Don't fancy standing in her shadow!!!
Peter Jones- Like Branson, he too tried something similar last year with 'Tycoon'. What a flop that was!
Sir Philip Green is surely the best option, if they could convince him to do it.