A legal bid to challenge the suspension of Parliament has succeeded at the appeal court in Edinburgh.
A group of around 70 parliamentarians had appealed against a ruling by a judge that Boris Johnson’s prorogation of Parliament was lawful.
Judge Lord Doherty dismissed a challenge against the suspension at the Court of Session last Wednesday, saying it was for politicians and not the courts to decide.
But three judges of the Inner House, the supreme civil court in Scotland, disagreed with Lord Doherty’s ruling.
The UK Government plans to appeal against the latest ruling to the Supreme Court.
The ruling comes a day after the prorogation took place in the early hours of Tuesday, with Parliament now suspended for five weeks.
It is an attack on the balance of the constitution and therefore is is unlawful
At the appeal hearing on Friday Aidan O’Neill QC, representing the parliamentarians, claimed prorogation was unlawful in his closing arguments.
He said: “A decision to prorogue shuts down Parliament. It is in those circumstances an attack on democracy.
“It is an attack on the balance of the constitution and therefore is is unlawful.”
David Johnston QC, representing the UK Government, had argued it was not for the courts to get involved in what was a political decision.
The campaigners included SNP MP Joanna Cherry QC, Liberal Democrat leader Jo Swinson, Labour MP Ian Murray and anti-Brexit barrister Jo Maugham, of the Good Law Project.
Ms Cherry tweeted: “Huge thanks to all our supporters & our fantastic legal team who have achieved the historic ruling that #prorogation is #unlawful #Cherrycase #Brexit #StopTheCoup.”