Royal prerogative is crucial in Article 50 appeal, UK Supreme Court hears

The British government's use of the royal prerogative to trigger the process of taking Britain out of the European Union is not being done on a "whim", a court has heard

The British government's use of the royal prerogative to trigger the process of taking Britain out of the European Union is not being done on a "whim" or "out of a clear blue sky", the UK's highest court has heard.

Attorney General Jeremy Wright told 11 Supreme Court justices at the start of one of the most important constitutional cases in British legal history that it was the "logical conclusion of a process in which Parliament has been fully and consciously involved".