The Courts of the United Kingdom are separated into three separate jurisidictions

Territorial jurisdiction

Territorial jurisdiction in United States law refers to a court's power over events and persons within the bounds of a particular geographic territory. If a court does not have territorial jurisdiction over the events or persons within it, then the court cannot bind the defendant to an obligation...

, the Courts of England and Wales

Courts of England and Wales

Her Majesty's Courts of Justice of England and Wales are the civil and criminal courts responsible for the administration of justice in England and Wales; they apply the law of England and Wales and are established under Acts of the Parliament of the United Kingdom.The United Kingdom does not have...

, Courts of Scotland

Courts of Scotland

The civil, criminal and heraldic Courts of Scotland are responsible for the administration of justice. They are constituted and governed by Scots law....

 and the Courts of Northern Ireland

Courts of Northern Ireland

The courts of Northern Ireland are the civil and criminal courts responsible for the administration of justice in Northern Ireland: they are constituted and governed by Northern Ireland law....

, as the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 does not have a single unified judicial system.

However, in the area of immigration law

Immigration law

Immigration law refers to national government policies which control the phenomenon of immigration to their country.Immigraton law, regarding foreign citizens, is related to nationality law, which governs the legal status of people, in matters such as citizenship...

, the respective jurisdictions

Subject-matter jurisdiction

Subject-matter jurisdiction is the authority of a court to hear cases of a particular type or cases relating to a specific subject matter. For instance, bankruptcy court only has the authority to hear bankruptcy cases....

 of the Asylum and Immigration Tribunal

Asylum and Immigration Tribunal

The Asylum and Immigration Tribunal was a tribunal constituted in the United Kingdom with jurisdiction to hear appeals from many immigration and asylum decisions...

 and the Special Immigration Appeals Commission

Special Immigration Appeals Commission

The Special Immigration Appeals Commission is a superior court of record in the United Kingdom established by the Special Immigration Appeals Commission Act 1997 that deals with appeals from persons deported by the Home Secretary under various statutory powers, and usually related to matters of...

 cover all of the United Kingdom; in employment law, Employment tribunal

Employment tribunal

Employment Tribunals are tribunal non-departmental public bodies in England and Wales and Scotland which have statutory jurisdiction to hear many kinds of disputes between employers and employees. The most common disputes are concerned with unfair dismissal, redundancy payments and employment...

s and the Employment Appeal Tribunal

Employment Appeal Tribunal

The Employment Appeal Tribunal is a tribunal non-departmental public body in England and Wales and Scotland, and is a superior court of record. Its primary role is to hear appeals from Employment Tribunals in England, Scotland and Wales...

 have jurisdiction

Jurisdiction

Jurisdiction is the practical authority granted to a formally constituted legal body or to a political leader to deal with and make pronouncements on legal matters and, by implication, to administer justice within a defined area of responsibility...

 in the whole of Great Britain

Great Britain

Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

 (i.e., not in Northern Ireland).

The Constitutional Reform Act 2005

Constitutional Reform Act 2005

The Constitutional Reform Act 2005 is an Act of the Parliament of the United Kingdom. It provided for a Supreme Court of the United Kingdom to take over the existing role of the Law Lords as well as some powers of the Judicial Committee of the Privy Council, and removed the functions of Speaker of...

 created a new Supreme Court of the United Kingdom

Supreme Court of the United Kingdom

The Supreme Court of the United Kingdom is the supreme court in all matters under English law, Northern Ireland law and Scottish civil law. It is the court of last resort and highest appellate court in the United Kingdom; however the High Court of Justiciary remains the supreme court for criminal...

 to take over the judicial functions of the House of Lords

Judicial functions of the House of Lords

The House of Lords, in addition to having a legislative function, historically also had a judicial function. It functioned as a court of first instance for the trials of peers, for impeachment cases, and as a court of last resort within the United Kingdom. In the latter case the House's...

 and devolution cases from the Judicial Committee of the Privy Council

Judicial Committee of the Privy Council

The Judicial Committee of the Privy Council is one of the highest courts in the United Kingdom. Established by the Judicial Committee Act 1833 to hear appeals formerly heard by the King in Council The Judicial Committee of the Privy Council (JCPC) is one of the highest courts in the United...

. The Supreme Court began work in 2009, and serves as the highest court of appeal in England and Wales

England and Wales

England and Wales is a jurisdiction within the United Kingdom. It consists of England and Wales, two of the four countries of the United Kingdom...

 and in Northern Ireland

Northern Ireland

Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

, and for civil cases in Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. The High Court of Justiciary

High Court of Justiciary

The High Court of Justiciary is the supreme criminal court of Scotland.The High Court is both a court of first instance and a court of appeal. As a court of first instance, the High Court sits mainly in Parliament House, or in the former Sheriff Court building, in Edinburgh, but also sits from time...

 remains the court of last resort in Scotland for criminal cases.

For details of the courts in the different jurisdictions of the United Kingdom see:

• Courts of England and Wales
  Courts of England and Wales
  Her Majesty's Courts of Justice of England and Wales are the civil and criminal courts responsible for the administration of justice in England and Wales; they apply the law of England and Wales and are established under Acts of the Parliament of the United Kingdom.The United Kingdom does not have...
  
  
• Courts of Northern Ireland
  Courts of Northern Ireland
  The courts of Northern Ireland are the civil and criminal courts responsible for the administration of justice in Northern Ireland: they are constituted and governed by Northern Ireland law....
  
  
• Courts of Scotland
  Courts of Scotland
  The civil, criminal and heraldic Courts of Scotland are responsible for the administration of justice. They are constituted and governed by Scots law....