The UK and EU have said they still remain some way off reaching a post-Brexit trade agreement, following the latest negotiations in London.
UK chief negotiator David Frost said there were "considerable gaps" in the most difficult areas, but a deal could still be reached in September.
His EU counterpart Michel Barnier said both sides were still "far away" and time was running out for negotiations.
The UK has ruled out extending the December deadline to reach a deal.
This was the second official negotiation round to be held in person since the coronavirus crisis, after both sides agreed to "intensify" talks in June.
The two sides' chief negotiators are due to meet informally in London next week, with another round of official talks scheduled for mid-August in Brussels.