5 The court structure
The UK has several legal systems: one for England and Wales, one for Scotland, and one for Northern Ireland. Each legal system has its own court structure.
The UK Supreme Court is the one common element of all three systems, acting as the final court to appeal to on civil matters by courts in the three legal systems.
You need to be aware of these differences. In immigration law, the most likely contact with the courts is in relation to an application for Judicial Review.