“Rydym yn croesawu dyfarniad y Goruchaf Lys heddiw sy’n golygu y bydd yn rhaid i Lywodraeth y DU ofyn am gymeradwyaeth seneddol ar ffurf Bil cyn medru tanio Erthygl 50 i ymadael â’r Undeb Ewropeaidd. Mae’n hanfodol i Lywodraeth y DU negodi mewn ffordd sy’n adlewyrchu buddiannau Cymru a’r Deyrnas Unedig yn gyfan – mae Prif Weinidog y DU eisoes wedi ymrwymo’n gyhoeddus i wneud hyn.
“We welcome the Supreme Court Judgment today which means that the UK Government must seek parliamentary approval in the form of a Bill before it can trigger Article 50 to leave the European Union.  It is vital that the UK Government develops an approach to negotiations which reflects the interests of Wales and the UK as a whole – an approach to which the Prime Minister has already publicly committed.