What Effect Has The EU Had On Parliamentary Sovereignty In UK And Its Law In General?

All members of the European Union, including the United Kingdom, agreed to "pool" some of the powers and responsibilities of their national governments and parliaments when they joined the union. This "pooling" means that national governments have given up some of their sovereignty, especially over issues relating to foreign policy, economics and justice, and have passed this on to a supranational organization.

This has important implications for the British parliament. For example, if a British government were to ratify an EU treaty along with other member states, and this would then come into effect everywhere in the EU, it would be very difficult for MPs of the British parliament to then over-turn, or overthrow such a treaty. Even if Parliament were to successfully pass a motion against any EU treaty, the European Court could intervene and rule the motion as illegal. In such a situation, the UK would have two choices. It could either accept the court's ruling and withdraw the motion before parliament, or it could pass the motion, allow the British government to act upon it and then withdraw the UK from the European Union.