With just 10 days to go, what happens next?

Speaker John Bercow’s ruling that the government cannot bring Theresa May’s Brexit deal back to Parliament without significant changes has driven a coach and horses through the prime minister’s plans.

But with just 10 days to go until Britain is due to leave, what options are on the table to break the impasse?

– Prorogation: Summoning the Queen to solve the problem is a drastic measure, but it is one way to get around Mr Bercow’s ruling that the deal cannot be brought back unchanged in this session.

– EU concession: Brexit will be on the agenda again when the PM attends the EU summit in Brussels tomorrow. Despite the EU’s insistence that the deal cannot be renegotiated, Mrs May could seek to use the talks to secure a substantial change, or at the very least a fig leaf, to amend her deal.

– Overruling the Speaker: If Mrs May is confident she could finally get a majority for the deal, she could table a paving motion to prepare the way for another vote.

– No-deal: Crashing out of the EU without a deal on March 29 remains the legal default. MPs voted to rule out this option last week, but without a change in the law, Britain will exit next week.

– General election or second referendum: If the options above are exhausted to no avail, the question may be put back to the public in the form of a second referendum or a general election.