Formal Brexit talks are due to resume in Brussels on Monday afternoon, with British negotiators urging the EU to show “flexibility and imagination”.
The European Commission’s chief negotiator Michel Barnier said on Twitter last week that the focus of the third round of negotiations would be “orderly withdrawal”.
The EU position had been “clear and transparent” since day one, he said. It was “essential” to make progress on citizens’ rights, settling accounts and the Irish border, he added.
Mr Davis and Mr Barnier will meet on Monday afternoon to formally start the negotiations.
Officials will then meet in working groups to discuss the detail behind each side’s proposals, before the round is closed by Mr Davis and Mr Barnier on Thursday.
On Sunday, Labour also added that it would keep the UK in the single market and customs union for a transitional period after leaving the EU and this was needed to avoid a “cliff edge” for the economy.
Meanwhile, the British Chambers of Commerce and the Association of German Chambers of Commerce have jointly pleaded with politicians to put economic interests first in their Brexit discussions.