"We had great patience with our UK friends but even this patience is running out. I would like the United Kingdom to reach an agreement on what path to follow next in a few hours, in a few days," Juncker said in an interview with the Rai News television channel, as broadcast in Italian late on Sunday.
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Juncker also stated that it was exclusively up to the United Kingdom to decide whether the country needed a second Brexit referendum to come out of the deadlock.
UK citizens voted to leave the European Union in a referendum almost three years ago, but the UK parliament has repeatedly rejected the withdrawal agreement, which was presented by the government after months-long talks with Brussels, and has refused to leave the bloc without any deal at all.
After the highly unpopular divorce deal was voted down for a third time on March 29 — the deadline by which London was supposed to have already agreed on how to leave the bloc — Brussels gave the United Kingdom until April 12 to figure out alternative withdrawal arrangements, or crash out of the union without an accord on that very day.