31.—(1) Any notice or document required or authorised by these Rules to be served on or sent to any person or authority may be–
(a)sent by post in a registered letter or by the recorded delivery service, or delivered by hand in accordance with paragraph (2) below,
(b)sent by means of electronic communication in accordance with paragraph (3) below.
(2) A notice or other document required or authorised by these Rules to be served on or sent to any person or authority that is sent by post in a registered letter or by the recorded delivery service, or delivered by hand, must be sent or delivered–
(a)in the case of the Tribunal, to the proper officer of the Tribunal;
(b)in the case of the Commissioner or the relevant Minister, to him at his office;
(c)in the case of any other party, to him or his representative at the address for service under these Rules.
(3) Any notice or other document required or authorised by these Rules to be served on or sent to any person or authority that is to be sent by means of electronic communication, must be sent–
(a)in the case of the Tribunal, by such means and to such address as the proper officer may specify;
(b)in the case of the Commissioner or the relevant Minister, by such means and to such address as he may specify;
(c)in the case of any other party, by such means and to such address as he or his appointed representative may specify.
(4) Without prejudice to paragraph (3) above, no person shall be required to accept service of documents sent by electronic means unless they have indicated that they are prepared to accept such service.
(5) An appellant or respondent data controller may at any time by notice to the Tribunal change his address for service, or the manner in which he wishes to have service effected on him, under these Rules.