—(1) Unless otherwise expressly provided in this Act, any notice, order or document required or authorised by this Act or any regulations made thereunder to be given or served on any person, and any summons issued by a court in connection with any offence under this Act or any regulations made thereunder may be served on the person concerned —
by delivering it to the person or to some adult member or employee of his family at his last known place of residence;
by leaving it at his usual or last known place of residence or place of business in a cover addressed to him;
by affixing it to some conspicuous part of his last known place of residence;
by sending it by registered post addressed to the person at his usual or last known place of residence or place of business; or
where the person is a body corporate —
by delivering it to the secretary or other like officer of the body corporate at its registered or principal office; or
by sending it by registered post addressed to the body corporate at its registered or principal office.
(2) Any notice, order, document or summons sent by registered post to any person in accordance with subsection (1) shall be deemed to be duly served on the person to whom the letter is addressed at the time when the letter would, in the ordinary course of post, be delivered and in proving service of the same, it shall be sufficient to prove that the envelope containing the notice, order, document or summons was properly addressed, stamped and posted by registered post.