Rebel Tory MPs are getting "closer and closer" to the 54 letters needed to trigger a vote of no confidence in the Prime Minister, Scottish Conservative leader Douglas Ross has said.
He said the situation was a "rollercoaster ride" as some MPs were withdrawing their letters to the backbench 1922 Committee in response to party whips.
Mr Ross spoke to the BBC a week after he called on Boris Johnson to resign amid the Downing Street parties scandal.
