Without prejudice to any power apart from this sub-paragraph to bring proceedings on behalf of another person, any power to make an application which is exercisable by a child or young person by virtue of paragraph 5(1) above shall also be exercisable on his behalf by his parent or guardian.

In this paragraph “guardian” includes any person who was a guardian of the child or young person in question at the time when any supervision order to which the application relates was originally made.