Viacom hunts for new boss as interim chief executive Tom Dooley steps down

Viacom's interim chief executive Tom Dooley has stepped down, with a source close to the situation informing Reuters that the company will look both internally and externally for a replacement. 
The media giant, which owns the likes of MTV, Comedy Central and Nickelodeon has confirmed that Dooley will be leaving in November. His departure follows on from a high-profile power struggle between controlling shareholders Sumner Redstone, the firm's board and former chief executive Philippe