(1)Any notice required or authorised by virtue of this Part of this Act to be served (whether the expression “serve” or the expression “give” or “send” or any other expression is used) on any person may be served—
(a)by delivering it to him or by leaving it at his proper address or by sending it by post to him at that address; or
(b)if the person is a body corporate, by serving it in accordance with paragraph (a) above on the secretary of that body.
(2)For the purposes of this section and of section 7 of the [1978 c. 30.] Interpretation Act 1978 (which relates to the service of documents by post) in its application to this section, the proper address of any person on whom a document is to be served shall be his last known address, except that in a case to which paragraph (b) of subsection (1) above applies, it shall be the address of the registered or principal office of the body; and for the purposes of this subsection the principal office of a company registered outside the United Kingdom or of a firm carrying on business outside the United Kingdom is its principal office within the United Kingdom.
(3)If a person to be served by virtue of this Part of this Act with any document by another has specified to that other an address within the United Kingdom other than his proper address (as determined in pursuance of subsection (2) above) as the one at which he or someone on his behalf will accept documents of the same description as that document, that address shall also be treated as his proper address for the purposes of this section and for the purposes of the said section 7 in its application to this section.
(4)This section shall not apply to any document in relation to the service of which provision is made by rules of court.
(5)In this section “serve” shall be construed in accordance with subsection (1) above.