BORIS Johnson was met by a barrage of chanting from pro-EU protesters as he left a two-hour lunch with Jean-Claude Juncker.

"Go home Boris" and "stop Brexit" were among the loudest cries directed at the Prime Minister after leaving the restaurant with the European Commission president.

Brussels has stepped up its demands for Johnson to set out his plan for a Brexit deal after talks between the Prime Minister and Juncker.

Johnson and the EU chief sat down for their first face-to-face talks in a restaurant in Juncker's native Luxembourg.

But while Juncker said the talks were "friendly" and negotiations will proceed "at high speed", there was little public sign of a breakthrough.

The commission said the Government had still not made "legally operational solutions" to replace the Irish backstop element of the Brexit divorce deal, which keeps the UK closely tied to EU rules in order to avoid a hard border.

It is yet more evidence that the Prime Minister’s Brexit strategy is “all smoke and mirrors”, SNP Westminster leader Ian Blackford said.

He tweeted: "The EU making it clear post meeting @BorisJohnson today that the onus is on the UK to come up with proposals. Johnson has failed to come up with anything meaningful. It is all smoke and mirrors."

Johnson tried to laugh off more yells, hisses and anti-Brexit cries of pro-EU demonstrators as he met with Luxembourg's Prime Minister Xavier Bettel.

"Stop the coup. Tell the truth," said one over a speaker. "Bog off Boris."

But Johnson laughed and smiled as he walked up to meet Bettel with a handshake and head into the Ministry of State for discussions.

A European Commission statement released following the working lunch at Luxembourg City's Le Bouquet Garni restaurant said: "President Juncker recalled that it is the UK's responsibility to come forward with legally operational solutions that are compatible with the Withdrawal Agreement.

"President Juncker underlined the Commission's continued willingness and openness to examine whether such proposals meet the objectives of the backstop. Such proposals have not yet been made."

Both Brexit Secretary Steve Barclay and the EU's chief negotiator Michel Barnier were at the lunchtime meeting with the Prime Minister and commission president.

Downing Street said the meeting was "constructive" and contact between the two sides would be stepped up.

A Downing Street spokeswoman said: "The Prime Minister reconfirmed his commitment to the Good Friday/Belfast Agreement and his determination to reach a deal with the backstop removed, that UK parliamentarians could support.

"The Prime Minister also reiterated that he would not request an extension and would take the UK out of the EU on October 31.

"The leaders agreed that the discussions needed to intensify and that meetings would soon take place on a daily basis.

"It was agreed that talks should also take place at a political level between Michel Barnier and the Brexit Secretary, and conversations would also continue between president Juncker and the Prime Minister."

While the restaurant itself was closed to the public, the streets were not and British Remain-backers headed to the square to call on the PM to hold another referendum or revoke Article 50.

The National:

"I think the whole referendum was based on a pack of lies," said Anthea MacDonald, a retired teacher who has gained dual citizenship from Luxembourg since the referendum.

"And as time has gone on, more and more people have come to realise that they would rather Remain."

A police officer approached the protesters to politely ask them to move on.

He asked the crowd which side of the debate they were on.

"We want to stay in the EU," they told him.

"Good," he replied, sticking two thumbs up and grinning.

The protesters returned after their own lunches and made voices known to the PM, largely drowning out questions from the press.

Johnson hastily left in a car without giving any answers.