19.—(1) At any hearing by the Tribunal a party may conduct his case himself or may appear and be represented by any person whom he may appoint for the purpose.
(2) In this rule, references to a “party” do not include the Commissioner in the case of an appeal under section 48(3) of the 1998 Act other than a case to which rule 6(3)(a) above applies.
(3) If the appellant does not intend to attend or be represented at a hearing, he must inform the Tribunal of his intention, and in such a case may send to the Tribunal additional written representations in support of his appeal.