It is described by constitutional experts as the "nuclear" option. Ministers are considering asking the Queen to bring Parliament to an early close after the Speaker threatened to block the Prime Minister from holding a vote on her Brexit deal, Telegraph reports.
In an intervention that will cement his reputation as one of the most controversial Speakers in history, John Bercow said on Monday he would not allow Mrs May to put her deal to a vote for a third time unless it is "substantially" different - citing a convention that dates back to 1604 and was last used in 1920.