An EU demand that Britain grant permanent settlement status to migrants from the bloc who arrive after Brexit could lead to a major upsurge in the number of EU nationals flowing into the country, a migration watchdog has warned.
Austrian Chancellor Sebastian Kurz said he was "happy" the offer of European Union membership remains open to Britain.
However, May's spokesman said on Tuesday that there was no question of not following through in March next year on the referendum vote of June 2016 to leave the EU.
"If tomorrow, or the day after, the United Kingdom made a decision to change its mind, it's clear that we would look at this with kindness", the adviser said.
"Once the British have left under Article 50 there is still Article 49 which allows a return to membership and I would like that", Juncker told MEPs, adding: "I would like us now to treat each other with respect and not abandon each other".
Britain may decide to rejoin a reformed EU, Theresa May's deputy David Lidington has said. Jeremy Hunt, the health secretary, said that the EU's "disappointing" and "arrogant" behaviour had turned...
He added: "I have heard Arlene Foster make very constructive comments in relation to practical solutions to some of the challenges that the island of Ireland and in deed the island and Britain face. I don't think there is a cunning grand plan behind it all", Cleppe, head of the Brussels office for the think-tank Open Europe, told AFP.
"It was always our view at the very start of this process that the biggest ally we would have when it came to negotiating with the European Union was Dublin, and indeed that always was the impression we got when Enda Kenny was in power, but since this nutcase Varadkar has taken over that things have all changed", Mr Wilson said.
"The EU has enough sense of the political debate in the United Kingdom to know that it isn't a viable option, but it doesn't hurt to remind them that it's possible", added Usherwood, who is also a reader in politics at the University of Surrey.