The BBC Trust has ordered a review into the corporation's lucrative commercial arm, BBC Worldwide following James Murdoch's recent attack on the corporation. The Director General Mark Thompson indicated that 100% owndership of Worldwide may not continue. The review will also look at all the BBC's activities after the 2012 digital switchover, although Thompson made clear that free delivery of on-line news was non-negotiable. Thompson also launched a robust defence of the beleaugred corporation, claiming growing levels of public trust and affection and pointing to the reaction to Terry Wogan's retirement as an example.