Confidential documents that “reflect the ideas the UK has put forward” on Brexit have been shared with the EU, the UK government says.
A statement said it will table “formal written solutions when we are ready” and not to an “artificial deadline”.
It comes after Finland’s prime minister said Boris Johnson has 12 days to set out his Brexit plans to the EU.
The European Commission said documents had been received and technical talks will now take place.
The commission’s chief spokesperson Mina Andreeva also confirmed there will be talks at a political level at a meeting on Friday between the EU’s chief negotiator Michel Barnier and Brexit Secretary Stephen Barclay.
The technical discussions will be on some aspects of rules relating to customs, manufactured goods, sanitary and phytosanitary – which relates to the health of plants, she said.