Gina Miller, a Guyanese who migrated to London, led the successful court action blocking the British Government from existing the European Union (EU) without Parliamentary approval.
The decision of three High Court Judges was delivered in London on Thursday morning.
Who is Gina Miller?
Miller is the investment manager and philanthropist who is leading the so-called “People’s Challenge” against Brexit.
Born in Guyana, she grew up in Britain and is now based in London where she works for SCM Private, the firm she co-founded in 2014.
Alongside her husband, she is also the founder and chairman of Miller Philanthropy, which offers services completely free of charge.
The couple also launched the True and Fair Campaign to call for more transparency and an end to hidden ISA charges in the financial services industry.
They have made major contributions to the Margaret Thatcher infirmary at the Royal Hospital Chelsea and several other small UK charities.
On Thursday, the Lord Chief Justice announced that the British Prime Minister, Thersa May, does not have the power to start the process of taking Britain out of the EU without a Parliamentary vote.
Lord Thomas declared: “The Government does not have power under the Crown’s prerogative to give notice pursuant to Article 50 for the UK to withdraw from the EU.”
Jacob Rees-Mogg said the decision came as a surprise it was made perfectly clear by former Prime Minister David Cameron that Article 50 would be triggered if the British people voted to leave the European Union on June 23.
The anti-EU politician told Sky News: “This has turned it on its head because of course, the royal prerogative cannot change the law and therefore anything that is in law remains the law, but what it can do is change treaties and has always been able to do.
“And Parliament has already been involved – that is the key thing.
“Parliament passed the referendum bill under the clear understanding from David Cameron that Article 50 would be exercised immediately.
“The then-PM’s view, as stated to Parliament, as stated to the country, was that he would exercise Article 50 on Friday morning.”
Mr Rees-Mogg added: “So that has been slightly delayed but that doesn’t change the fact that Parliament gave the responsibility to decide whether we remained in the European Union to the British people and the British people decided to go.”
The Brexit campaigner added the High Court’s ruling goes against the decisions it has made in the past, where it has upheld the royal prerogative.
He said: “What surprises me is every court case brought against a European treaty the powers were flowing to the European Union the courts upheld, they upheld the royal prerogative.
“And now when it’s about taking powers away from the European Union suddenly they are ruling against the royal prerogative. So I think it is a very surprising judgment and we will need to look at the politics of it very carefully.”
Shortly after the shocking ruling was announced, the Government announced it is set to appeal the High Court decision in the Supreme Court, with a second battle over the case set to begin on December 5.
Speaking to the House of Commons as news of the ruling broke, International Trade Secretary and top Brexit backer Liam Fox told MPs: “The Government is disappointed by the court’s judgment.
“The country voted to leave the EU in a referendum approved by acts of parliament. The Government is determined to respect the result of the referendum.
“This judgment raises the important and complex matter of law and it is right that we consider it carefully before deciding how to proceed.”
The British Government indicated it would appeal the ruling.