Unit countries and cities

Other elements of the British Constitution
Finally, there are other elements that serve to define the rights and obligations of the British people. Britain has signed up to numerous international conventions and treaties, which can determine the legality or otherwise of actions or processes, such as marine pollution or human rights. European law also applies in the UK, and according to the principle of Primacy included in the charter of the European Union, EU law takes precedence over UK law in any event of incompatibility.