From ITN News: Alastair Campbell is to resign as the Government's director of communications and strategy, Downing Street has confirmed.
No date has been set for his departure and his successor has not been named, Number 10 has said.
Mr Campbell said: "It has been an enormous privilege to work so closely in opposition and in Government for someone I believe history will judge as a great transforming Prime Minister.
Read more at BBC News, and at other blogs, I'm sure.