The Star Chamber was made up of Privy Counsellors, as well as common-law judges, and it supplemented the activities of the common-law and equity courts in both civil and criminal matters. In a sense, the court was a court of appeal, a supervisory body, overseeing the operation of the lower courts, although it could hear cases by direct appeal as well. The court was set up to ensure the fair enforcement of laws against the English upper class, those so powerful that ordinary courts could never convict them of their crimes.