30Service of documents
(1)Any document which is required or authorised under this Part of this Act to be given to or served on any person may be given to or served on him—
(a)by delivering it to him or by leaving it at his proper address; or
(b)by sending it to him by post.
(2)Any document required or authorised under this Part of this Act to be given to or served on a body corporate shall be duly given or served if it is given to or served on the secretary or clerk of that body.
(3)For the purposes of this section and of section 26 of the [1889 c. 63.] Interpretation Act 1889 (service of documents by post) in its application to this section, the proper address of any person to or on whom any document is to be given or served shall, in the case of the secretary or clerk of a body corporate, be that of the registered or principal office of that body, and in any other case shall be the last known address of the person to be served :
Provided that, if the person to or on whom the document to be given or served has, in accordance with arrangements agreed, given an address in the United Kingdom for the giving or service of the document, his proper address for those purposes shall be that address.
(4)If the name or the address of any owner, lessee or occupier of land to or on whom any document is to be given or served under this Part of this Act cannot after reasonable inquiry be ascertained by the local authority or person seeking to give or serve the document, but there is on that land a building occupied by some person, the document may be given or served by addressing it to the person to or on whom it is to be given or served by the description of " owner ", " lessee " or " occupier " of the land (describing it) and either delivering it to some responsible person in the building or sending it by post to that building in a letter addressed to " the owner ", " the lessee ", or " the occupier ", as the case may be.
(5)In relation to any document required or authorised under this Part of this Act to be given or served by a local authority, the preceding provisions of this section shall have effect in place of section 287A of the [1933 c. 51.] Local Government Act 1933 or section 349 of the [1947 c. 43.] Local Government (Scotland) Act 1947 (service of notices by local authority) but nothing in this section shall affect the operation in relation to such a document of section 287B of the said Act of 1933 or, as the case may be, section 347 of the said Act of 1947 (authentication of documents).