how does UK define self-determination

The concept of self-determination is not explicitly defined in UK law. However, the principle of self-determination is recognized as a fundamental right under international law. The United Kingdom has endorsed various international human rights instruments that affirm the right to self-determination, such as the Universal Declaration of Human Rights and the International Covenant on Civil and Political Rights.

In the context of UK constitutional law, self-determination has been a significant issue in relation to certain territories, namely Scotland and Northern Ireland. The question of self-determination has been invoked concerning the potential independence of Scotland or the reunification of Ireland.

It's important to note that discussions on self-determination within the UK are complex and often intertwined with political, historical, and legal considerations. Different perspectives exist, and the interpretation and application of self-determination depend on specific contexts and circumstances.