Sch 4D para 8
(1) It is not a ground of application to the High Court under section 288 that the determination ought to have been made by the Welsh Ministers instead of an appointed person, unless the applicant challenges the person's power to make the determination before the person's decision is given. (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .