Not quite - t here's a quirk in British law around prison. Which is where 'his majesty's pleasure' applies. If you committed a crime whilst you were mentally unwell, you are put on a restricted section for an indefinite period of time rather than sent to prison. We don't send people who are unwell to prison because they often aren't responsible for their actions at the time they committed the crime. This means they stay in hospital until doctors agree, or until their legal team can argue the doctor is being too restrictive and the court releases them. Sometimes people come from prison to hospital and go back to serving time at his majesty's pleasure, but not always. Sometimes people are in hospital far longer than they would've been in prison because the system is centred around rehabilitation rather than punishment. :o)