Tánaiste Simon Coveney has said it has been a good week for the Brexit process despite the resignations that followed the publication of Theresa May's Chequers proposals. 

Both the Brexit Secretary David Davis and Foreign Secretary Boris Johnson resigned in protest over the UK government’s proposals for the ongoing negotiations with the EU.

Speaking at the Institute of International and European Affairs in Dublin, Minister Coveney said there had not been a clear British negotiating position for many months.

He said: "Actually, despite all the political movement and challenges in Westminster, I think this has been a good week for Brexit.

"There was always going to be a moment in time that was needed for the British Prime Minister to show her authority because she had a very divided cabinet on her approach to Brexit." 

He acknowledged that some of the British proposals would cause difficulties, adding that there are things that the EU cannot do. 

"Michel Barnier and his taskforce cannot negotiate an outcome that compromises the integrity of the single market for everybody else. He cannot compromise the workings of a shared customs union across the EU for everybody else," he said.

"Having said that, I think there will be an attempt to try and accommodate the British thinking in a way that protects the integrity of the single market and the customs union." 

Eurosceptic Tory revolt designed to sink the Chequers proposals

Meanwhile, some Conservative Party Eurosceptics have hit back at Mrs May by tabling amendments to a key Brexit Bill that could kill off her Chequers plan.

The four amendments to the customs bill were put down a day before Thursday's publication of a white paper policy document giving details of the prime minister's plans.

A rebellion by Eurosceptic backbenchers could wipe out Mrs May's majority when the bill returns to the House of Commons on Monday, in what would be the first significant test of strength for her Brexit critics.

One of the rebel amendments, signed by Jacob Rees-Mogg, former Tory leader Iain Duncan Smith and ex-cabinet minister Priti Patel, demands that the UK scrap an offer to collect taxes and duties on behalf of the EU, unless the remaining 27 member states pledge to do the same for Britain.

A second amendment - backed by the DUP, former cabinet minister Owen Paterson and Labour's Kate Hoey - would force the British government to commit itself in law not to allow a customs border down the Irish Sea.

Other amendments would require the UK to have a separate VAT regime from the EU and force the prime minister to table primary legislation if she wishes to keep Britain in the customs union.

Speaking at the NATO summit in Brussels, Prime Minister May insisted that her Chequers deal delivered on the "red lines" that she set out in her Lancaster House speech last year.

"It delivers on the vote that people gave on Brexit, it delivers the fact that we will have an end to free movement, we will have an end to the jurisdiction of the European Court of Justice in the UK, we won't be sending vast contributions to the EU every year, we'll be out of the Common Agricultural Policy, out of the Common Fisheries Policy," she said.

International Trade Secretary Liam Fox said the Chequers agreement was designed to be a "credible offer" to Brussels to allow negotiations to make progress.

Additional reporting: PA