Chairman and CEO, Europe and Asia, News Corp.
Rank change: Down
As the only one of Rupert Murdoch's adult children in an executive role at News Corp., James has built his own identity while remaining close to his father. He runs the newspaper, digital, and satellite businesses in Europe and Asia; last year News bid for the 61% of satellite and broadband operator BSkyB it doesn't already own and put its British newspaper behind a pay wall. If the BSkyB deal passes muster with regulators, James could sit atop the most powerful media group in Europe -- and having supported the candidacy of the new Prime Minister can only help his cause.
NEXT: 9. John Arnold
Last updated October 14 2010: 1:25 PM ET