Advisory bodies and campaigners urge investors to oppose up to 13 of media firm’s 15 directors amid phone-hacking allegations Up to 25% of shareholders are expected to protest against Rupert, James and Lachlan Murdoch retaining their positions on the News Corporation board at the embattled media group’s annual meeting in Los Angeles next week. A string of advisory bodies and corporate governance campaigners have issued recommendations to vote against up to 13