R (Munjaz) v Ashworth Hospital Authority [2005] UKHL 58
The Code of Practice is guidance rather than instruction, but must not be departed from in the absence of cogent reasons; the Ashworth seclusion policy, although deviating from the standards in the Code of Practice, was lawful.
Related cases
Munjaz v UK 2913/06 [2012] MHLO 79 (ECHR)