Circuit judges are judges in England and Wales who sit in the Crown Court, county courts and certain specialized sub-divisions of the High Court of Justice, such as the Technology and Construction Court. There are currently over 600 circuit judges throughout England and Wales. Circuit judges rank below High Court judges but above District judges. They may be appointed to sit as deputy High Court judges. Some are also eligible to sit in the Criminal Division of the Court of Appeal, though they are the more senior circuit judges.