The European Union (EU) says it will work over the weekend to break a Brexit deadlock, if the UK can quickly suggest new proposals.
Talks have broken down over solutions to the controversial Irish border backstop contained in a deal reached between London and Brussels.
UK Prime Minister Theresa May needs to win changes to it ahead of a vote on her Brexit deal in the UK's Parliament next week.
Britain's due to leave the EU on March 29.
Chancellor Philip Hammond says he's optimistic that an agreement can be found:

US peace envoys meet Zelenskyy in Kyiv after Putin talks
US targets three Iranian oil vessels after attack on Navy ships
Four killed in Israeli strikes on southern Lebanon
Indonesia's Anak Krakatau eruption halts flights, schools, fishing
Putin says US-Russia contacts beneficial as talks begin with Witkoff and Kushner
Chinese national rescued from Nepal tunnel 10 days after flash flood
US envoys Witkoff, Kushner arrive in Moscow for talks on peace in Ukraine
One dead, 11 people missing after mudslide in China's Jiangxi province
