18.3.—(1) The following persons are to be respondents to an application under this Part—
(a)where there are existing proceedings or the proceedings have been concluded—
(i)the parties to those proceedings; and
(ii)if the proceedings are proceedings under Part 11, the person who is the subject of those proceedings;
(b)where there are no existing proceedings—
(i)if notice has been given under section 44 of the 2002 Act (notice of intention to adopt or apply for an order under section 84 of that Act), the local authority to whom notice has been given; and
(ii)if an application is made for permission to apply for an order in proceedings, any person who will be a party to the proceedings brought if permission is granted; and
(c)any other person as the court may direct.