20 January 2017
Supreme Court to reveal Article 50 decision on Tuesday
The Supreme Court will announce its decision on Tuesday on whether Theresa May has the right to trigger the process to leave the EU without the approval of parliament.
The highest court in the land will rule on January 24 whether to reject or allow a Government appeal against a High Court ruling, which blocked the royal prerogative being used to trigger Article 50.
The ruling will be read by the court's president Lord Neuberger and will reflect the decision of 11 Supreme Court justices - the largest single case assembly since the law lords were created in 1876.
If the court rules to overturn November's judgment and decides the use of prerogative powers did not interfere with the sovereignty of parliament, then the March 31 deadline Mrs May has set for invoking Article 50 could go ahead without delay.
But should the justices uphold the decision made by the High Court, then the Brexit process could be delayed.
A separate Supreme Court judgment is to rule on Article 127 and will determine whether Britain will automatically quit the single market or European Economic Area when it leaves the EU.
Lord Neuberger's reading of the summary will be broadcast live on the Supreme Court's website at 9:30am and is expected to last only five minutes.