115Service of notices, &c
(1)The parties are free to agree on the manner of service of any notice or other document required or authorised to be served in pursuance of the construction contract or for any of the purposes of this Part.
(2)If or to the extent that there is no such agreement the following provisions apply.
(3)A notice or other document may be served on a person by any effective means.
(4)If a notice or other document is addressed, pre-paid and delivered by post—
(a)to the addressee’s last known principal residence or, if he is or has been carrying on a trade, profession or business, his last known principal business address, or
(b)where the addressee is a body corporate, to the body’s registered or principal office,
it shall be treated as effectively served.
(5)This section does not apply to the service of documents for the purposes of legal proceedings, for which provision is made by rules of court.
(6)References in this Part to a notice or other document include any form of communication in writing and references to service shall be construed accordingly.