Theresa May has dramatically announced that MPs will on Wednesday be given the opportunity to vote on her timetable for triggering Article 50 and formally beginning Brexit.

Just over 24 hours after the Supreme Court began considering whether Parliament should be allowed a vote on Article 50, the Prime Minister formally amended a backbench motion on Brexit.

MPs will be asked to back the Government's plan to formally serve Article 50 by the end of March 2017. Mrs May also committed to revealing the official plan for Brexit before the process begins.

The unexpected announcement came after months of the Government refusing to give a "running commentary" on Brexit, or formally to allow Parliament a vote on the process.

The news of Wednesday's vote was welcomed by both Leave and Remain campaigners, with Brexiteers backing the Prime Minister's decision to finally tackle the issue head-on. Downing Street sources said that it was now time to "see if those who say they accept the result really do".