Britain's High Court has ruled the Prime Minister cannot trigger the UK's exit from the European Union without the approval of Parliament.

A group of campaigners has won the backing of judges.

Theresa May wants to invoke Article 50 herself before the end of March.

Number 10 says the government will appeal to the British Supreme Court.

Britain's trade minister is Liam Fox:

Businessman Charlie Mullins was one of those who brought the action - he says he's not interested in overturning the referendum vote: