—(1) Without prejudice to subsection (2), any notice or other documents required or authorised to be served or given under this Act, and every summons issued by a court in connection with any offence under this Act, may be served or given —
by delivering it to the person on whom it is to be served or to whom it is to be given;
by leaving it at the usual or last known place of residence of that person, or, in a case where an address for service has been given by that person, at that address;
by sending it by registered post addressed to that person at his usual or last known place of residence, or in the case where an address for service has been given by that person, at that address;
in the case of an incorporated company or body, by delivering it to the registered or principal office of the company or body, or by sending it by registered post addressed to the company or body at that office; or
in the case of an unincorporated body, by delivering it to the registered address of the unincorporated body or by sending it by registered post to the unincorporated body at that address.
(2) Where the notice or document is required to be served on or given to a person who is the occupier of any premises comprised in any land, the notice or document shall be taken to be duly served on that person if it is addressed to that person and is affixed conspicuously to some object on the land.
(3) Any notice, document or summons sent by registered post to a person, company or body in accordance with subsection (1) shall be deemed to be duly served on or given to that person, company or body at the time when it 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, document or summons was properly addressed to that person, company or body, stamped and posted by registered post.