A lawyer representing the UK Government has said it is "very likely" MPs will be able to vote on the final Brexit agreement between the UK and the European Union.
James Eadie QC was speaking in the High Court as part of the final day of the hearing to decide whether Prime Minister Theresa May can trigger Article 50 without parliamentary approval.
Downing Street has since confirmed that he was representing the Government's position.
The judges have said they will rule on the historic legal challenge "as quickly as possible".
Lord Chief Justice Lord Thomas, Master of the Rolls Sir Terence Etherton and Lord Justice Sales reserved their decision on Tuesday at the end of a three-day hearing.
After hearing closing submissions from lawyers at the High Court in London, Lord Thomas announced: "We shall take time to consider the matter and give our judgment as quickly as possible."
What experts have said about Brexit
What experts have said about Brexit
1/11 Chancellor of the Exchequer Philip Hammond
The Chancellor claims London can still be a world financial hub despite Brexit “One of Britain’s great strengths is the ability to offer and aggregate all of the services the global financial services industry needs” “This has not changed as a result of the EU referendum and I will do everything I can to ensure the City of London retains its position as the world’s leading international financial centre.”
2/11 Yanis Varoufakis
Greece's former finance minister compared the UK relations with the EU bloc with a well-known song by the Eagles: “You can check out any time you like, as the Hotel California song says, but you can't really leave. The proof is Theresa May has not even dared to trigger Article 50. It's like Harrison Ford going into Indiana Jones' castle and the path behind him fragmenting. You can get in, but getting out is not at all clear”
3/11 Michael O’Leary
Ryanair boss says UK will be ‘screwed’ by EU in Brexit trade deals: “I have no faith in the politicians in London going on about how ‘the world will want to trade with us’. The world will want to screw you – that's what happens in trade talks,” he said. “They have no interest in giving the UK a deal on trade”
4/11 Tim Martin
JD Wetherspoon's chairman has said claims that the UK would see serious economic consequences from a Brexit vote were "lurid" and wrong: “We were told it would be Armageddon from the OECD, from the IMF, David Cameron, the chancellor and President Obama who were predicting locusts in the fields and tidal waves in the North Sea"
5/11 Mark Carney
Governor of Bank of England is 'serene' about Bank of England's Brexit stance: “I am absolutely serene about the … judgments made both by the MPC and the FPC”
6/11 Christine Lagarde
IMF chief urges quick Brexit to reduce economic uncertainty: “We want to see clarity sooner rather than later because we think that a lack of clarity feeds uncertainty, which itself undermines investment appetites and decision making”
7/11 Inga Beale
Lloyd’s chief executive says Brexit is a major issue: "Clearly the UK's referendum on its EU membership is a major issue for us to deal with and we are now focusing our attention on having in place the plans that will ensure Lloyd's continues trading across Europe”
8/11 Colm Kelleher
President of US bank Morgan Stanley says City of London ‘will suffer’ as result of the EU referendum: “I do believe, and I said prior to the referendum, that the City of London will suffer as result of Brexit. The issue is how much”
9/11 Richard Branson
Virgin founder believes we've lost a THIRD of our value because of Brexit and cancelled a deal worth 3,000 jobs: We're not any worse than anybody else, but I suspect we've lost a third of our value which is dreadful for people in the workplace.' He continued: "We were about to do a very big deal, we cancelled that deal, that would have involved 3,000 jobs, and that’s happening all over the country"
10/11 Barack Obama
US President believes Britain was wrong to vote to leave the EU: "It is absolutely true that I believed pre-Brexit vote and continue to believe post-Brexit vote that the world benefited enormously from the United Kingdom's participation in the EU. We are fully supportive of a process that is as little disruptive as possible so that people around the world can continue to benefit from economic growth"
11/11 Kristin Forbes
American economist and an external member of the Monetary Policy Committee of the Bank of England argues that the economy had been “less stormy than many expected” following the shock referendum result: “For now…the economy is experiencing some chop, but no tsunami. The adverse winds could quickly pick up – and merit a stronger policy response. But recently they have shifted to a more favourable direction”
A number of applicants have challenged Theresa May's strategy for Brexit in what has been described as one of the most important constitutional cases in generations.
They argue that the prime minister has no legal power to trigger Article 50 of the Lisbon Treaty to leave the European Union without the prior authorisation of Parliament.
Mrs May announced at the Conservative Party conference that she intends doing so by the end of March 2017.
The judges have heard submissions that the Government lacks legal power to use the royal prerogative to notify Article 50 and begin the process of removing statutory rights granted to UK citizens under the European Communities Act 1972, which made EU law part of UK law.
Government lawyers say that if the challenge succeeds, the Government "could not give effect to the will and decision of the people, as clearly expressed in the referendum, to withdraw from the EU without further primary legislation".
Because of the urgency and constitutional importance of the case, any appeal is expected to be heard by the Supreme Court, the highest court in the land, before the end of the year.
Here is how the court case unfolded:
What is the difference between hard and soft Bexit?
After repeatedly stating that “Brexit means Brexit”, Theresa May has confirmed she will trigger Britain’s exit from the European Union by the end of March 2017, beginning two years of formal negotiations.
But despite this timescale, speculation remains over what kind of relationship the UK will develop with our partners after we leave the bloc.
There are a myriad of possible post-EU arrangements being discussed and, although there are no definitive definitions, they can be loosely categorised as “hard” or “soft” Brexit options.
In her opening speech to the Conservative conference, the Prime Minister unveiled a tougher stance on EU withdrawal than she has previously taken, by seemingly backing a hard Brexit with controls on immigration at its core.
"Let me be clear," said Ms May. "We are not leaving the European Union only to give up control of immigration again. And we are not leaving only to return to the jurisdiction of the European Court of Justice," adding those wanting to do everything possible to preserve access to the single market were looking at Brexit the "wrong way".
So, what is Hard Brexit?
Favoured by ardent Brexiteers, a hard Brexit arrangement would likely see the UK give up full access to the single market and full access of the customs union along with the EU.
The arrangement would prioritise giving Britain full control over its borders, making new trade deals and applying laws within its own territory.
Initially, this would mean the UK would likely fall back on World Trade Organisation (WTO) rules for trade with its former EU partners.
What are the pros and cons?
The International Trade Secretary, Liam Fox, has said a hard approach would benefit the UK by making it a global trading nation. He said that "the UK is a full and founding member of the WTO", during a speech in Geneva last Tuesday,
German business leaders have expressed a similar view. Markus Kerber of the German BDI group told BBC Radio 4's Today programme: "It's better to have a hard Brexit that works than to have a fudge in the middle that has to be renegotiated or doesn't politically work and you have uncertainty lingering on."
A hard Brexit, however, could see British goods and services subject to tariffs, adding 10 per cent, for example, to the cost of exported cars. While sectors such as agriculture could lose protections against cheap imports from abroad.
Leaving the customs union would mean a significant increase in bureaucratic checks on goods passing through ports and airports. And nations such as the US and Australia have said that reaching a new trade agreements with the EU would take priority.
And what is soft Brexit?
This approach would leave the UK's relationship with the EU as close as possible to the existing arrangements, and is preferred by many Remainers.
The UK would no longer be a member of the EU and would not have a seat on the European Council. It would lose its MEPs and its European Commissioner. But, it would keep unfettered access to the European single market.
Goods and services would be traded with the remaining EU states on a tariff-free basis and financial firms would keep their "passporting" rights to sell services and operate branches in the EU. Britain would remain within the EU's customs union, meaning that exports would not be subject to border checks.
National models for this sort of deal include Norway, Iceland and Liechtenstein, which are not members of the EU but have access to the single market by being part of the European Economic Area.
In return, these countries must make payments into EU budgets and accept the "four freedoms" of movement of goods, services, capital and people. They are subject to EU law through the Luxembourg-based EFTA Court. Switzerland has a similar arrangement through a series of regularly updated treaties.
It is likely that a "soft Brexit" deal would insist on Britain observing the "four freedoms", meaning continued free access for European nationals to work and settle in the UK.
What are the pros and cons?
Pro-EU MPs argue that maintaining “proper connections” with the EU’s trading arrangements is a matter of national interest.
Senior Conservative MP Neil Carmichael has said a "harsh Brexit" must be avoided at all costs suggesting it could "damage our economy, damage our capacity as a nation to perform capably in the future and actually damage Europe.”
Kathleen Brooks, director of research at City Index, said a ‘hard Brexit’, is likely to come “at the cost” of a period of economic disruption, which is “likely to be negative for the pound".
Experts warn that London’s position as a financial hub will be dealt a severe blow if the UK left the single market. However, that access is contingent on countries agreeing to let European Union citizens live and work anywhere in the bloc.
Theresa May claimed people who talk about a “trade-off” between controlling immigration and trading with Europe are looking at things the “wrong way”, arguing that soft Brexit is "subverting" democracy and attempting to "kill" the process by "delaying it".Reuse content