Boris Johnson and European Commission president Ursula von der Leyen agreed during a phone call on Saturday to “redouble efforts” in a bid to solve “significant differences” in the UK-EU trade negotiations, Downing Street said.

The call follows two weeks of intensified talks between the UK’s chief negotiator Lord Frost and his European Union equivalent Michel Barnier, with Mr Johnson and Ms von der Leyen paving the way for further discussions between the pair in London next week.

A Downing Street spokeswoman said: “Prime Minister Boris Johnson today spoke with European Commission president Ursula von der Leyen for a stock take on the progress in the negotiations between the UK and the EU.

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“The Prime Minister set out that, while some progress had been made in recent discussions, significant differences remain in a number of areas, including the so-called level playing field and fish.

“The Prime Minister and president agreed that their negotiating teams would continue talks in London next week, beginning on Monday, in order to redouble efforts to reach a deal.

“They agreed to remain in personal contact about the negotiations.”