European Commission President Ursula von der Leyen and British Prime Minister Boris Johnson spoke on disagreements over fisheries that are barring a new trade deal, as well as the latest on coronavirus, in a call on Monday, sources said.
EU sources added that the bloc was now willing to accept a reduction in the value of its catch in UK waters of up to 25% over a period of time from 2021.
The length of that, as well as agreeing how the bloc could retaliate should Britain cut its industry off afterwards were still the sticking points in trade talks just nine days before Britain leaves the bloc's single market and customs union, meaning current trading rules will no longer apply.
European and other countries have also suspended most of travel from Britain since the weekend to try to curb a new faster spreading strain of the coronavirus.