A senior Tory has accused the Government of "blackmail" of Conservative rebels and said they should report it to the police.
William Wragg, chair of the Commons Public Administration Committee, said Tory colleagues had been subject to intimidation by the party whips over their perceived opposition to the Prime Minister.
No10 staff, special advisers and government whips also encouraged embarrassing stories being released to journalists if they did not support the PM, he claimed.