Any power to make regulations or orders under this Act shall be exercisable by statutory instrument.

A statutory instrument made in the exercise of any such power shall be subject to annulment in pursuance of a resolution of either House of Parliament.

Regulations under this Act may make different provision for different classes of case.

Any Order in Council under this Act may be revoked or varied by a subsequent Order in Council, and any order under section 7 of this Act may be revoked or varied by a subsequent order under that section.