Constables in the United States
While Constables primarily serve the Courts, they belong to the executive branch of government.
Courts of England and Wales
The Crown Court is a criminal court of both original and appellate jurisdiction which in addition handles a limited amount of civil business both at first instance and on appeal. It was established by the Courts Act 1971. It replaced the assizes whereby High Court judges would periodically travel around the country hearing cases, and quarter sessions which were periodic county courts. The Old Bailey is the unofficial name of London's most famous criminal court, which is now part of the Crown Court. Its official name is the "Central Criminal Court". The Crown Court also hears appeals from magistrates' courts.