24. Where a maintenance calculation has been made in response to an application by a child under section 7 of the Act and that child ceases to be a child for the purposes of the Act, the Secretary of State shall immediately notify, so far as that is reasonably practicable—
(a)the other qualifying children who have attained the age of 12 years and the non-resident parent with respect to whom that maintenance calculation was made; and
(b)the person with care.