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Brexit: Supreme Court says Parliament must give Article 50 go-ahead Brexit: Supreme Court says Parliament must give Article 50 go-ahead
(35 minutes later)
Parliament must vote on whether the government can start the Brexit process, the Supreme Court has ruled.Parliament must vote on whether the government can start the Brexit process, the Supreme Court has ruled.
The judgement means Theresa May cannot begin talks with the EU until MPs and peers give their backing - although this is expected to happen in time for the government's 31 March deadline.The judgement means Theresa May cannot begin talks with the EU until MPs and peers give their backing - although this is expected to happen in time for the government's 31 March deadline.
But the court ruled the Scottish Parliament and Welsh and Northern Ireland assemblies did not need a say.But the court ruled the Scottish Parliament and Welsh and Northern Ireland assemblies did not need a say.
Brexit Secretary David Davis will make a statement to MPs at 12:30 GMT.Brexit Secretary David Davis will make a statement to MPs at 12:30 GMT.
During the Supreme Court hearing, campaigners argued that denying the UK Parliament a vote was undemocratic. During the Supreme Court hearing, campaigners argued that denying the UK Parliament a vote was undemocratic and a breach of long-standing constitutional principles.
But the government said it already had the powers to trigger Article 50 of the Lisbon Treaty - getting talks under way - without the need for consulting MPs and peers. It wants to do this by the end of March. But the government said it already had the powers to trigger Article 50 of the Lisbon Treaty - getting talks under way - without the need for consulting MPs and peers.
It said that MPs had voted overwhelmingly to put the issue in the hands of the British people via the referendum.
What the court said
Reading out the judgement, Supreme Court President Lord Neuberger said: "By a majority of eight to three, the Supreme Court today rules that the government cannot trigger Article 50 without an act of Parliament authorising it to do so."Reading out the judgement, Supreme Court President Lord Neuberger said: "By a majority of eight to three, the Supreme Court today rules that the government cannot trigger Article 50 without an act of Parliament authorising it to do so."
The court also rejected arguments that the Scottish Parliament, Welsh Assembly and Northern Ireland Assembly should get to vote on Article 50 before it is triggered.The court also rejected arguments that the Scottish Parliament, Welsh Assembly and Northern Ireland Assembly should get to vote on Article 50 before it is triggered.
Lord Neuberger said: "Relations with the EU are a matter for the UK government."Lord Neuberger said: "Relations with the EU are a matter for the UK government."
Government reaction: This will not delay Brexit
Outside the court, Attorney General Jeremy Wright said the government was "disappointed" but would "comply" and do "all that is necessary" to implement the court's judgement.Outside the court, Attorney General Jeremy Wright said the government was "disappointed" but would "comply" and do "all that is necessary" to implement the court's judgement.
Supreme Court ruling - key points
By Dominic Casciani - BBC home affairs correspondent
A Downing Street spokesman said: "The British people voted to leave the EU, and the government will deliver on their verdict - triggering Article 50, as planned, by the end of March. Today's ruling does nothing to change that."A Downing Street spokesman said: "The British people voted to leave the EU, and the government will deliver on their verdict - triggering Article 50, as planned, by the end of March. Today's ruling does nothing to change that."
In his statement to MPs later Brexit Secretary David Davis is expected to give more details on the plans to bring forward a Bill to Parliament.
Campaigner Gina Miller gives her reaction
Gina Miller, one of the campaigners who brought the case against the government, said Brexit was "the most divisive issue of a generation", but added that her victory was "not about politics, but process".Gina Miller, one of the campaigners who brought the case against the government, said Brexit was "the most divisive issue of a generation", but added that her victory was "not about politics, but process".
Analysis - By Dominic Casciani, BBC home affairs correspondent
This momentous judgement is about one thing alone: the rule of law and how the UK, as a champion of that steady, calm form of government, gets on with the business of leaving the EU.
But what it also makes clear is that membership of the EU is messy in constitutional terms - so only Parliament has the right to pull us out. It can't be done by the stroke of a minister's pen.
On the devolution side, the government did however win hands down. The court unanimously ruled that the devolved bodies have no real say in leaving the EU: constitutional power - the means to change the fabric of the United Kingdom, rests with the UK Parliament alone.
What the parties say
Labour leader Jeremy Corbyn said: "Labour respects the result of the referendum and the will of the British people and will not frustrate the process for invoking Article 50."Labour leader Jeremy Corbyn said: "Labour respects the result of the referendum and the will of the British people and will not frustrate the process for invoking Article 50."
But the Scottish National Party said it would put forward 50 "serious and substantive" amendments to the government's parliamentary bill for triggering Article 50.But the Scottish National Party said it would put forward 50 "serious and substantive" amendments to the government's parliamentary bill for triggering Article 50.
Article 50 will begin exit talks with the EU, which are expected to last up to two years.Article 50 will begin exit talks with the EU, which are expected to last up to two years.
Liberal Democrat leader Tim Farron said his MPs and peers peers would vote against Article 50 unless there was guarantee of the public having a vote on the final deal reached between the UK and EU.Liberal Democrat leader Tim Farron said his MPs and peers peers would vote against Article 50 unless there was guarantee of the public having a vote on the final deal reached between the UK and EU.
The case against the government was brought by Ms Miller, an investment manager, and hairdresser Deir Tozetti Dos Santos.The case against the government was brought by Ms Miller, an investment manager, and hairdresser Deir Tozetti Dos Santos.
Supreme Court ruling - key points
Supreme Court split
The Supreme Court's judgement backs that made by the High Court last year, against which the government appealed.The Supreme Court's judgement backs that made by the High Court last year, against which the government appealed.
In last June's referendum, UK voters backed Brexit by 51.9% to 48.1%.In last June's referendum, UK voters backed Brexit by 51.9% to 48.1%.
The members of the Supreme Court who rejected the government's appeal were: Lord Neuberger, Lady Hale, Lord Mance, Lord Kerr, Lord Clarke, Lord Wilson, Lord Sumption and Lord HodgeThe members of the Supreme Court who rejected the government's appeal were: Lord Neuberger, Lady Hale, Lord Mance, Lord Kerr, Lord Clarke, Lord Wilson, Lord Sumption and Lord Hodge
Those who decided in favour of it were: Lord Carnwath, Lord Hughes and Lord Reed.Those who decided in favour of it were: Lord Carnwath, Lord Hughes and Lord Reed.
Supreme Court on Northern Ireland and Brexit
During the four-day hearing in December, the justices heard arguments that Northern Ireland had a unique place in the UK constitution because of the nature of the 1998 Belfast Agreement and the devolved bodies that flowed from it.
Counsel argued that Northern Ireland's constitution could not be changed without a vote by its people.
But in its judgement, the Supreme Court unanimously ruled that not only did the devolved bodies have no role in deciding the future of the UK as a whole in the EU, Northern Ireland had no special status beyond this either.
They ruled that, while Northern Ireland's people did indeed have a fundamental constitutional say on being part of the UK, that did not extend to being part of the EU.