Ed won by just over 1% from former foreign secretary David after second, third and fourth preference votes came into play.

He said a "new generation" had taken charge of Labour and it had to change.

Ed Balls was third, Andy Burnham fourth and Diane Abbott last in the ballot of MPs, members and trade unionists.

Mr Miliband, 40, replaces acting leader Harriet Harman in the contest triggered by the resignation of Gordon Brown.