The UK Government has lost its historic battle in the Supreme Court over Brexit.

The highest court in the England rejected an appeal by ministers against a High Court judgment blocking their decision to begin Britain’s exit from the European Union without Parliament having a say.

UK Supreme Court justices ruled, by a majority of eight to three, that UK Prime Minister Theresa May cannot lawfully bypass MPs and peers by using the royal prerogative to trigger Article 50 of the Lisbon Treaty and start the two-year process of negotiating the UK’s divorce from its EU partners.

Lead claimant Gina Miller says the #Article50 Supreme Court case "was about the legal process, not politics" https://t.co/YfPuW37X4q — SkyNews (@SkyNews) January 24, 2017

The ruling is a blow to Mrs May, who has repeatedly said she intends to trigger Article 50 by the end of March following the clear majority in favour of Brexit in the June 2016 referendum.

It was won by a wide-ranging group of anti-Article 50 campaigners led by investment manager Gina Miller, 51, and hairdresser Deir Dos Santos.