13—Variation and revocation of supervision order
(1) The Supreme Court may, on application made by the Attorney-General or a person subject to a supervision order, vary a condition of the order (including a condition imposed by the Parole Board) or revoke the order.
(2) A person subject to a supervision order may only apply under subsection (1)
with the permission of the Court.
(3) The Court may only grant permission under subsection (2)
if satisfied that—
(a) there has been a material change in circumstances relating to the person or supervision order; and
(b) it is in the interests of justice to grant permission.