From Mental Health Law Online
An application made while a patient is detained under section 2 or 3 does not lapse when the patient is made subject to a CTO, as s72(1) (powers of tribunals) should be given a literal construction. Preliminary points: (1) Discussion on Law Society guidance and cases where client lacks full capacity. The Upper Tribunal has no power to appoint a litigation friend or equivalent, and the OS's powers and duties apply to court proceedings not tribunals; in any event, justice did not require a litigation friend as the potential "best interests" argument was argued by other parties. (2) It was not unlawful for a First-tier Tribunal judge to consider an application for permission to appeal from, or a review of, his own decision.
Presumably the same would apply to s37 patients who are placed on CTOs. Further notes, including a more detailed summary, to follow.