(1) Subject to subsection (2) of this section, a levy order shall be deemed to have been revoked with the close of the 6th anniversary of the day before the day on which it was made, unless—
(a) It has been revoked (or has been deemed to have been revoked) with effect on or before the 6th anniversary of the day on which it was made; or
(b) It has ceased to have effect on or before the 6th anniversary of the day on which it was made, by virtue of the Regulations (Disallowance) Act 1989.
(2) Subject to subsection (3) of this section, the Governor-General may, by Order in Council made at least 12 months before the day on which the order concerned would otherwise be deemed under subsection (1) of this section to have been revoked, extend for a specified period (of not more than 5 years) the currency of a levy order that is then in force; and in that case (subject to subsection (3) of this section), the order shall not be deemed under subsection (1) of this section to have been revoked until the extended period has expired.
(3) Where the currency of a levy order has been extended under subsection (2) of this section, it may from time to time be further extended under that subsection.