The hearing
5.—(1) Any hearing of an appeal shall be heard by a tribunal composed in accordance with section 4(1) and (2) of the 1996 Act.
(2) Subject to paragraph (3), any hearing of or in connection with an appeal shall take place in public.
(3) A tribunal may sit in private—
(a)for the purpose of hearing evidence from any person which in the opinion of the tribunal is likely to consist of—
(i)information which he could not disclose without contravening a prohibition imposed by or by virtue of any enactment,
(ii)any information which has been communicated to him in confidence or which he has otherwise obtained in consequence of the confidence reposed in him by another person, or
(iii)information the disclosure of which would, for reasons other than its effect on negotiations with respect to any of the matters mentioned in section 178(2) of the 1992 Act, cause substantial injury to any undertaking of his or in which he works; or
(b)if it considers it expedient in the interests of national security.
(4) A member of the Council on Tribunals or of its Scottish Committee shall be entitled to attend any hearing taking place in private in his capacity as member.