At his press conference earlier, Michel Barnier was asked by the BBC's Europe reporter Adam Fleming to give one example of where the UK negotiators had successfully changed his mind on an issue.

In response, he said the UK won't have to pay relocation costs for EU bodies such as the European Banking Authority and the European Medicines Agency which are currently based in London but will be moving elsewhere after Brexit.

The BBC's political editor says Friday's agreement implies an eventual divorce bill for the UK of between 40 and 45 billion euros (that's between £35bn and £40bn in sterling).

Nick Macpherson, who was the top civil servant in the Treasury between 2005 and 2016, has reacted to the deal.

Press Association

The deal's done and both parties are ready for phase two - but what's going to be squeezed in in the last couple of weeks of 2017?

13 December - European Parliament will debate and vote on the joint report from today. They will pin down the arrangement for citizens' rights, the Irish border and the divorce bill.

14 and 15 December - The remaining EU 27 will meet at the scheduled European Council summit and are expected to give the green light to progress onto trade talks and the transition.

20 December - The government's EU Withdrawal Bill is due to complete the crucial committee stage in the House of Commons.

Then there will be further debates in both Houses of Parliament which are expected to take up months of 2018.

Michel Barnier concluded his press conference by talking about the all-important question of the UK's future relationship with the EU.

He says there are a "range of models" that so-called third party countries have with the EU, mentioning Norway, Turkey, Ukraine and Canada, which all have a "balance of rights and responsibilities".

He suggests the UK's "red lines" in the negotiation - Theresa May has said the UK will leave the customs union and the single market - rule out a number of the possibilities.

Where does that leave the UK, he hypothesises?

This is highly significant.

There is an ongoing debate in the cabinet about how close the UK should remain to the EU after Brexit and, as Laura Kuenssberg indicated recently, a discussion over the end state has been deliberately put off amid disputes.

BuzzFeed
BuzzFeed

The UK will remain a member of the single market and customs union for two years after Brexit, according to BuzzFeed.

The website says it has seen draft EU guidelines, external which were circulated to the EU 27 other member states on Friday morning.

Image source, PA

Ulster Unionist leader Robin Swann says many details on the subject of the Irish border still need to be looked at.

"This is a guide as to the next stage. The next stage will tell you the detail and at that point Northern Ireland will see whether the devil is in the detail or the saviour is in the small print."

He says at this stage political leaders are unlikely to get the detailed agreements on up to 142 areas of North-South cooperation.

Foreign Secretary Boris Johnson repeats the Leave campaign phrase of "taking back control" while congratulating the PM's progress.

BBC political correspondent Chris Mason says the cabinet will now have a discussion about what type of relationship is wanted from Brexit.

Getting through this stage was the first hurdle before they would have these talks, he added.

At the Barnier press conference, questions have moved onto money.

Pressed about the UK's "divorce bill", the EU negotiator says he is "not interested" in numbers, saying there are lots of figures being bandied about but that these can change over time "and that in itself creates controversy".

"I have never got into numbers and I am not going to start today."

What is more important is that all 28 EU countries have entered into "unambiguous commitments and that these are respected".

In that regard, he hails Theresa May's Florence speech, in which the UK agreed to respect budgetary commitments to 2020 already entered into and accepted no other EU member would have to pay more due to Brexit.

London Mayor Sadiq Khan has welcomed the prime minister's commitment to protect EU citizens living in the UK and Britons living in the EU.

But he says the detail must be clear about what rights they have.

Image source, PA

Speaking to reporters earlier, Ireland's Taoiseach welcomed the progress over the Irish border issue among other things.

Leo Varadkar said the UK prime minister's assurances there would be no new borders and no hard border in Northern Ireland provide cast iron guarantees. He added the agreement on this was "politically bullet-proof".

The Good Friday Agreement in all its parts is protected under the deal and everyone born in Northern Ireland will continue to have the right to Irish and EU citizenship. As part of this the Common Travel Area will continue.

He offered assurances that the Irish government would not exploit Brexit to move towards a united Ireland while maintaining the future of the Republic remains in the EU.

"I want in particular to recognise the unionist community in Northern Ireland and assure you the Irish Government has no hidden agenda."

Addressing Irish citizens, Mr Varadkar said: "You will never again be left behind by an Irish government."

Image source, AFP

The deal done this morning means EU workers and their families will be allowed to live and work in the UK in line with current freedom of movement principles.

It also give rights to those who won't have secured permanent residency when the UK withdraws from the EU.

The UK will offer reunification rights for relatives, including spouses, parents, grandparents, children and grandchildren, who do not live in the UK, to join them in the future.

UK citizens living in countries within the union will have similar guarantees,

Prime Minister Theresa May said: "The deal we've struck will guarantee the rights of more than three million EU citizens living in the UK and of a million UK citizens living in the EU.

"EU citizens living in the UK will have their rights enshrined in UK law and enforced by British courts. They will be able to go on living their lives as before."

Adam Fleming
Brussels reporter

Image source, AFP/Getty Images

Busy bars and restaurants and a curiously-timed early morning press conference. What was to happen?

Then came the advice: be at the European Commission for 7am.

As the prime minister and her staff danced and sang karaoke at the Downing Street Christmas Party, negotiators finalised a 15-page document setting out commitments made by both sides.

The key was six extra points in the section on Northern Ireland which would allow the DUP to (mostly) give their blessing.

At 0509 GMT came the call from Number 10 that Theresa May’s plane was in the air.

In the dark, the European Commission protocol staff hoisted the British flag outside their HQ.

Before dawn the prime minister’s motorcade swept through the empty streets of the Brussels’ EU quarter.

Over orange juice and croissants – there was no champagne – Jean-Claude Juncker and Theresa May agreed enough progress had been made for the Brexit talks to move on to trade, a transition deal and a future partnership.

But the mood of celebration was punctured by Donald Tusk, who said that all of this has been the easy bit.

Watch Ireland's Taoiseach Leo Varadkar react to the deal.