Formal talks with European Union counterparts were scheduled to begin next Monday, June 19, but might be postponed by a few days.
European Union leaders expressed concern that May's loss of her majority would raise the risk of negotiations failing, resulting in a legal limbo for people and business.
Brexit negotiator Guy Verhofstadt, who is president of the Alliance of Liberals & Democrats for Europe in the European Parliament, had caustic words for Mrs May.
Brussels, by contrast, has a negotiating team led by a former European commissioner, Michel Barnier, and it has published detailed negotiating guidelines, agreed upon by the bloc's 27 other member states. There's is actually, it now emerges, very little difference between the position of the Labour party and the position of the government.
The European Council president, Donald Tusk, has said he believes Article 50 can be reversed.
"You have got to bear in mind that they have got to talk to their membership and we have to talk to our MPs [members of parliament] in the [House of] Commons, the  22 Committee".
The Conservatives won 318 seats in the election, eight short of an outright majority.
Labor, under Jeremy Corbyn, ran what political analysts regard as an excellent and optimistic campaign, promising an end to austerity, more money for health and social welfare and free tuition.
CARTE AVANT/APRES. De la présidentielle aux législatives, En Marche ! continue sa progression
La France insoumise est aussi tombée de haut car, PCF inclus, le groupe n'aura que de 10 à 23 fauteuils dans l'hémicycle. Derrière le parti présidentiel, la droite (LR/UDI/DVD) raflerait de 85 à 125 sièges pour Ipsos (80 à 100 selon Elabe).
On Twitter, Siegfried Muresan, spokesman for the European Parliament's largest grouping, the European People's Party, said, "EU did not want #Brexit, but has been prepared to negotiate it since past year".
Fitch also added that the loss of 21 seats by the Scottish National Party reduced the possibility of a second Scottish independence referendum.
He noted that the Democratic Unionists will have their own interests about a post-Brexit relationship with Ireland, including border and customs regulations.
They argue the United Kingdom should stay in the single market to "protect" jobs.
The UK risks a cliff edge "no deal" withdrawal from the EU if it "wastes" more time before beginning its Brexit negotiations, the European Union's chief Brexit negotiator has warned.
As such, policymakers in the Caribbean will be following the steps which the British government intends taking, as whatever happens there will have some bearing on how they approach the matter to carve out a policy that would benefit Caribbean countries.
Speaking in Mexico, Mrs Merkel told a news conference: "We are ready for the negotiations".
"I want to ensure that we can look again at issues like Brexit, which we know we are now going to have to get cross-party support for, and move to a consensus within the country about what it means and what we seek to achieve as we leave", she told the BBC on Saturday.
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