
- In The Father v Worcestershire County Council [2025] UKSC 1, habeas corpus was not available to challenge a care order since the appropriate procedure would be either an appeal or an application to discharge the care order under s 39 of the Children Act 1989.
Habeas corpus ad subjiciendum (now simply habeas corpus—an order to produce the body (person)), is an ancient common law prerogative writ by which the sovereign exercises a right to inquire into why any of his subjects have been deprived of liberty. Although recorded by Blackstone in 1305, this appears to have been used before Magna Carta in 1215. Nowadays, habeas corpus is exercised by the High Court at the instance of an aggrieved applicant (see CPR 87). If the detention has no legal justification, release of the relevant party is ordered. As Lord Esher MR explained in Barnardo