Law of the United Kingdom
The United Kingdom has three distinctly different legal systems, each of which derives from a particular geographical area for a variety of historical reasons: English law (in the joint jurisdiction of England and Wales), Scots law and Northern Ireland law. As a result, there is no single unified legal system of the United Kingdom as a result of the continuation of the separate legal systems of England (and Wales), Scotland and Northern Ireland.
Source: Wikipedia — Law of the United Kingdom (CC BY-SA 4.0)