The BBC has announced that Tony Hall will take up the role of director general for the BBC, beginning 2 April.
Tony Hall, previously chief executive of the Royal Opera House and deputy chairman of Channel 4, was appointed to the role in November.
At the time of his appointment Hall said: "I'm committed to ensuring our news services are the best in the world.
"I'm committed to making this a place where creative people, the best and the brightest, want to work.
"And I know from my first days here as a news trainee, to my time as head of news and current affairs, to my time now at the Royal Opera House, that I can't do it on my own. Having the right teams working together, sparking off each other, is key.
"And I want to build a world class team to lead a world class BBC."