Around 180 Conservative MPs are ready to defy the Prime Minister's plan to legalise gay marriage, The Sunday Telegraph has reported.
The newspaper said the rebellious majority - which it compares to 120 Tory MPs who will apparently support the move - includes six whips and "up to four" Cabinet members who will abstain or vote against their leader's wishes.
Landmark plans to legalise gay marriage got the green light in the Commons, despite a majority of Tories failing to support the Government.
The Prime Minister will read the letter delivered to Number 10, take their views on board, but not change his mind over gay marriage.
Many Conservative MPs just do not understand the move when the tax measure is in the Coalition Agreement.