(1) In so far as the Governor-General is by or under this Act required to act in his discretion or to exercise his individual judgment, he shall be under the general control of, and comply with such particular directions, if any, as may from time to time be given to him by, the Secretary of State, but the validity of anything done by the Governor-General shall not be called in question on the ground that it was done otherwise than in accordance with the provisions of this section.

(2) Before giving any directions under this section the Secretary of State shall satisfy himself that nothing in the directions requires the Governor-General to act in any manner inconsistent with any Instrument of Instructions issued to him by His Majesty.