(1) The service of a notice or other document on a person for the purpose of or in relation to a proceeding under this Act may be effected by delivering it to the person or by sending a copy by prepaid registered post in an envelope addressed to the person at his or her last known residence or place of business in the State.

(2) In the case of a company to which the Companies Act, 1963, applies, service may be effected by delivering the document to, or by sending it by registered prepaid post in an envelope addressed to the company at its registered office.

(3) In the case of a body corporate to which subsection (2) does not apply or an unincorporated body of persons, the service may be effected by sending a copy of the notice or other document by registered prepaid post in an envelope addressed to the body at any place in the State where the body conducts its business or in such other manner as an originating summons may be served on such a body under the Rules of the Superior Court.