Britain could crash out of the EU without a deal if negotiation talks are not finished in October because there won't be enough time to agree new laws, ministers fear.

Senior Government figures including minister Suella Braverman held crisis talks with Commons leader Andrea Leadsom this week to thrash out a plan, amid growing fears Parliament won't be able to enact Brexit before deadline day next March.

Without the passage of the Withdrawal and Implementation Bill the UK could be forced out without a deal because there would be no legal mechanism to underpin the new agreement with the EU.

Ms Leadsom is understood to have been warning ministers of the impending danger, which some believe could leave the country in "legal limbo", for weeks but they have been focused on rows about a meaningful vote.

If ministers are forced to try and rush the new rules through the Commons MPs could be made to sit through the night, over recess and debate could be cut from eight days to just one, sources said. They fear a widespread rebellion as a result.