The European Union (Withdrawal Agreement) Act 2020 implemented the Withdrawal Agreement, as agreed between the United Kingdom and the European Union.
Gwrthododd y Senedd, yn ogystal â Senedd yr Alban a Chynulliad Gogledd Iwerddon, roi cydsyniad i Ddeddf yr Undeb Ewropeaidd (Y Cytundeb Ymadael) 2020.