Brexit: последствия референдума с точки зрения права ЕС

Act 2015
1.(4) “Should the United Kingdom remain a member of the European Union or leave the European Union?”

EU (2016.11.03)
The most fundamental rule of the UK's constitution is that Parliament is sovereign and can make and unmake any law it chooses. As an aspect of the sovereignty of Parliament it has been established hundreds years that Crown-i.e. the Government of the day - cannot exercise of prerogative powers override legislation enacted by Parliament. This principle is of critical importance and sets the context the general rule which the Government seeks to rely - that normally the conduct of international relations and the making and unmaking treaties are taken to be matters falling within the scope of the Crown's prerogative powers. That general rule exists precisely because such no effect including as laid down by Parliament in legislation [18-36}
In the present case, however, the Government accepts, and indeed is given under Article 50 it will inevitably the effect of that if notice domestic law Those elements of EU law which Parliament has made part of domestic law by enactment of the 1972 Act will due course cease to have effect [76-80].
The central contention of the Government in the present case is that Parliament must be taken to have intended when it enacted the 1972 Act that the Crown would retain prerogative power to effect a withdrawal from Community Treaties (now the Treaties), the Crown should have the power to choose whether EU law should continue to have effect in the domestic law of the UK or not [76-81].

Government There text of the 1972 Act to support it. In the judgment of the Court the argument is contrary both to the language used by Parliament in the 1972 Act and to the fundamental constitutional principles of the sovereignty of Parliament and the absence of any entitlement on the part the Crown domestic law by the exercise of its prerogative powers [82-94, 97-104]. The Court expressly accepts the principal argument of the claimants [95-96].
For the reasons set out in the judgment, we decide that the Government does not have power under the Crown's prerogative to give notice pursuant to Article 50 for the UK to withdraw from the European Union.