The European Union has offered the UK a delay to Brexit, which is due to take place on March 29.
Member states say Britain can delay leaving the bloc until May 22, if Prime Minister Theresa May's Brexit deal is approved by lawmakers next week.
If May cannot get her vote through, a shorter deadline is on offer- until April 12.
Our correspondent Olly Barratt has more from London.

Trump cancels US strikes on Iran, citing progress in talks
US confirms third strike on Indian-crewed tankers this week
UK defence minister Healey quits, says PM Starmer's plans fail to keep country safe
False alarm at the Pentagon triggers brief shelter-in-place order
Trump says US will hit Iran 'very hard', take control of energy infrastructure
