A "divorce" deal - which sets out how the United Kingdom leaves - has not been agreed and prime minister Boris Johnson has pledged to leave whether one is reached or not.
Critics say he's deliberately spoiling for a fight with Brussels so he can crash out of the EU.
On Thursday Johnson failed to confirm whether he would resign as PM if he lost a vote of no-confidence and instead insisted that what MPs should do "is honour the mandate of the people and leave the European Union on 31 October".
Stopping the United Kingdom from leaving the European Union without a deal is "very unlikely" due to the lack of time to secure a new agreement and reduced opportunities for lawmakers to legislate against it, the Institute for Government has concluded in a report.
Johnson is expected to return to the House of Commons in September after the summer recess to face the Remainer-dominated parliament and likely calls for a vote of no-confidence in the government in order to thwart Brexit.More news: Mohamed Salah scores and assists in Liverpool's Premier League opener
More news: Russia missile test blast kills five nuclear agency staff
More news: Massive power cut hits homes and businesses across Northampton
The document was reportedly drawn up after a strategy meeting involving a cross-party group of MPs last week, and is believed to have been discussed with the Labour Party leadership.
Labour has been mulling an immediate confidence vote in Johnson's government in the first week of September but they will only do so if they have enough Conservative MPs on board who are willing to bring down their own prime minister.
Johnson has promised to take Britain out of the European Union on October 31 with or without a deal, increasing the possibility of a no-deal Brexit that has sent the pound tumbling.
MPs opposed to no deal believe they can topple Johnson's government, then use a 14-day window before an election to change the law, forcing Johnson to request an Article 50 extension to the Brexit deadline. He believes a deal is in the UK's and the EU's best interests and he has said he will be energetic in pursuit of a deal.
"[The prime minister] wants to achieve a deal but if we can not achieve a deal then it needs to be as orderly a Brexit as possible - that is why the work of government at the moment is focused hugely on that effort".