David Cameron has sidelined Boris Johnson amid fears the maverick Tory could steal the limelight at the party's annual conference next month.
London mayor Mr Johnson has been relegated to a brief 15-minute slot during "snooze time" after Sunday lunch.
The move will be a bitter blow for the outspoken politician who dreams of succeeding Mr Cameron and becoming Prime Minister.
Tory Party chiefs are determined he will not upstage Mr Cameron despite his huge popularity in the party.
They have denied him the chance to make a keynote speech at the Birmingham conference.
A Tory source said: "He will not be the darling of the conference. There will only be one star of the show and that's going to be David Cameron."