The UK has been urged to table fresh proposals within the next 48 hours to break the Brexit impasse.
The UK said proposals to satisfy MPs’ concerns about being tied to EU rules have already been made.
It comes as Jeremy Corbyn met with Tory MPs to discuss possible alternatives to the PM’s deal.
The PM is seeking legally-enforceable changes to the backstop which is an insurance policy designed to prevent physical checks on the border between Northern Ireland and the Republic of Ireland.
There have been few visible signs of progress ahead of Parliament’s second vote on the Brexit deal.
