The Court concluded that the UK Government does not have power to give notice under Article 50 for the UK to withdraw from the European Union using the Crown prerogative.
Daeth y Llys i’r casgliad nad oes gan Lywodraeth y Deyrnas Unedig y pŵer i roi rhybudd o dan Erthygl 50 y bydd yn ymadael â’r Undeb Ewropeaidd gan ddefnyddio uchelfraint y Goron.