5. Subject to regulation 6, the Commissioner may examine cases of particular children—
(a)to or in respect of whom regulated children’s services in Wales are being or have been provided;
(b)to or in respect of whom services are being or have been provided by any of the persons mentioned in Schedule 2B to the Act or persons providing such services on behalf of or under arrangements with any of those persons; or
(c)who are ordinarily resident in Wales and who are being or have been affected by the exercise or proposed exercise of any function of the Assembly or a person mentioned in Schedule 2A to the Act,
where the cases relate to issues concerning the provision of such services or the effect on the said children of the exercise of such functions.