(1)Subject to the provisions of this section, any notice or other document required or authorised to be served or given under this Act may be served or given either—
(a)by delivering it to the person on whom it is to be served or to whom it is to be given; or
(b)by leaving it at the usual or last known place of abode of that person, or, in a case where an address for service has been given by that person, at that address; or
(c)by sending it in a prepaid registered letter, or by the recorded delivery service, addressed to that person at his usual or last known place of abode, or, in a case where an address for service has been given by that person, at that address; or
(d)in the case of an incorporated company or body, by delivering it to the secretary or clerk of the company or body at their registered or principal office, or sending it in a prepaid registered letter, or by the recorded delivery service, addressed to the secretary or clerk of the company or body at that office.
(2)Where the notice or document is required or authorisd to be served on or given to any person as having an interest in premises, and the name of that person cannot be ascertained after reasonable inquiry, or where the notice or document is required or authorised to be served on any person as an occupier of premises, the notice or document shall be taken to be duly served if—
(a)being addressed to him by the description of “the owner”, or “the occupier”, as the case may be, of the premises (describing them), it is delivered, left or sent in the manner specified in subsection (1)(a), (b) or (c) above; or
(b)being addressed to him either by name or in accordance with paragraph (a) above, and marked in such manner as may be prescribed for securing that it shall be plainly indentifiable as a communication of importance—
(i)it is sent to the premises in a prepaid registered letter or by the recorded delivery service and is not returned to the authority sending it; or
(ii)it is delivered to some person on those premises; or
(iii)it is affixed conspicuously to some object on those premises.
(3)Subsection (4) below applies where—
(a)the notice or other document is required to be served on or given to all persons having interests in, or being occupiers of, premises comprised in any land; and
(b)it appears to the authority required to serve or give the notice or other document that any part of that land is unoccupied.
(4)In such a case the notice or document shall be taken to be duly served on all persons having interests in, and on any occupiers of, premises comprised in that part of the land (other than an owner who in accordance with the relevant provisions of this Act has given to that authority an address for the service of the notice on him) if—
(a)being addressed to “the owners and any occupiers” of that part of the land (describing it), and
(b)marked as mentioned in subsection (2) above,
it is affixed conspicuously to some object on the land.