EU President Jean-Claude Juncker greeting Theresa May at the EU Commission in Brussels

After late night phone-calls and a very early morning flight to Brussels, Theresa May and the EU announced a breakthrough deal which will allow Brexit negotiations to progress to the next stage.

Here is how the day unfolded.

In dramatic early-morning scenes, the Prime Minister flew to Brussels to stage a joint press conference with Jean-Claude Juncker, EU Commission president, following lengthy negotiations with her allies in the Democratic Unionist Party (DUP).

The leaders declared that "sufficient progress" had been made on the "divorce issues" to begin the negotiations on their future trading relationship. The decision must be approved by the other 27 EU leaders at a summit on Thursday.

Key details emerged throughout the day including the detail on Britain's divorce bill - which will be between £35bn and 39bn rather than the anticipated £50bn - and the fact that people living in Northern Ireland will be able to retain their EU citizenship.

Leading Brexiteers such as Boris Johnson and David Davis gave their backing to the Prime Minister but she still faces significant a challenge to convince members of her own party over the deal, as she had to make concessions on controversial issues such as the European Court of Justice.