(1) Where a notice, direction or other document is authorised or required by this Act or an instrument made thereunder to be served on or given to a person, it shall, unless otherwise specified in this Act or the instrument, be addressed to him or her and shall be served on or given to him or her in one of the following ways -

(a) by addressing it to the person by name and delivering it to him or her;

(b) by leaving it at the address at which the person ordinarily resides or, in a case in which an address for service has been furnished, at that address (hereafter in this section referred to as "an address for service");

(c) by sending it by ordinary prepaid post addressed to the person at the address at which he or she ordinarily resides or at an address for service; or

(d) in any case where the Panel considers the immediate service or giving of it is required, by sending it, by means of a facsimile machine, to a device or facility for the reception of facsimiles located at the address at which the person ordinarily resides or at an address for service.

(2) For the purposes of this section, a company registered under the Companies Acts, 1963 to 1990, shall be deemed to be ordinarily resident at its registered office, and every other body corporate and every unincorporated body shall be deemed to be ordinarily resident at its principal office or place of business.