May must get parliament's approval before triggering Brexit

By Michael Holden and Estelle Shirbon LONDON (Reuters) - Prime Minister Theresa May must give parliament a vote before she can formally start Britain's exit from the European Union, the UK Supreme Court ruled on Tuesday, giving lawmakers who oppose her Brexit plans a chance to amend or hinder them. By a majority of eight to three, the Supreme Court decided May could not use executive powers known as "royal prerogative" to invoke Article 50 of the EU's Lisbon Treaty and begin two years of divorce