Article 17 Applications by grandparents to be parties to proceedings.
Where in any such proceedings as are mentioned in section 32A(1) of the Act of 1969 a grandparent of the relevant infant makes an application under section 32C of that Act, the circumstances in which the court may give leave for that grandparent to be made a party to the proceedings are those in which the court is satisfied that—
the grandparent, before the commencement of the proceedings, had a substantial involvement in the infant’s upbringing at any time during the infant’s lifetime; and
making the grandparent a party to the proceedings is likely to be in the interests of the welfare of the relevant infant.
The power of the court to give leave for a grandparent to be made a party to the proceedings shall also be exercisable before the hearing of the proceedings, and shall be so exercisable also by the justices' clerk.