28.—(1) Subject to the following paragraphs, all hearings must be held in public.
(2) The Tribunal may give a direction that a hearing, or part of it, is to be held in private.
(3) Where a hearing, or part of it, is to be held in private, the Tribunal may determine who is permitted to attend the hearing or part of it.
(4) The Tribunal may give a direction excluding from any hearing, or part of it—
(a)any person whose conduct the Tribunal considers is disrupting or is likely to disrupt the hearing;
(b)any person whose presence the Tribunal considers is likely to prevent another person from giving evidence or making submissions freely;
(c)any person who the Tribunal considers should be excluded in order to give effect to a direction under rule 14(2) (withholding information likely to cause harm); or
(d)any person where the purpose of the hearing would be defeated by the attendance of that person.
(5) The Tribunal may give a direction excluding a witness from a hearing until that witness gives evidence.