In a recent case (R (Abu) v Secretary of State for Justice [2025] EWHC 3026 (Admin)), the Justice Secretary and the prison authorities were found to have transgressed both their public law powers and human rights obligations by segregating prisoners. Importantly, the secretary (and her predecessor) was found to have breached Article 3 of the Convention (prohibition of inhuman and degrading treatment and punishment), in what is believed to be…