Where–

(a) an approved agency has made, or is making, arrangements or negotiations for, towards, or with a view to, the adoption of a child; and

(b) a period of 9 months has elapsed since the Secretary has signified his acceptance of guardianship of the child–

the principal officer of that approved agency shall, within 14 days after the expiration of that period, furnish the Secretary with a report in writing concerning the welfare and interests of the child.