Inherent authority describes, in practice, the built-in power a superior court has to control its own process and to act to prevent injustice, even where no specific rule or statute applies. In the UK and Ireland this is better known as the court’s inherent jurisdiction (High Court of England and Wales, Court of Session’s nobile officium in Scotland, High Court of Northern Ireland, and the Irish High Court). It supports orders such as case management directions, stays, injunctive/interdict or anonymity orders, restraining abusive proceedings, contempt controls, and protective measures for children or vulnerable adults. It cannot override legislation or established procedural codes and is exercised sparingly where necessary to fill gaps or safeguard the administration of justice.Outside the courts, some practitioners use “inherent authority” loosely in agency and company law to suggest a manager’s authority arising from their role. UK and Irish law, however, recognises the categories of actual (express or implied/“usual”) authority and apparent (ostensible) authority; “inherent authority” is not a separate category.Usage and effect are broadly consistent across England and Wales, Scotland, Northern Ireland and Ireland, subject to local terminology and procedural rules.