1(1)A Tribunal hearing any appeal shall have power to—
(a)investigate the facts on which the decision appealed against was based;
(b)order the production of documents which it considers are relevant to the appeal;
(c)summon witnesses;
(d)consider fresh evidence, including evidence which could have been produced to the Board before it made the decision in question;
(e)admit any evidence which it considers is relevant to the hearing even though it would not be admissible in proceedings before a court.
(2)On determining any appeal, a Tribunal may—
(a)confirm, reverse or vary any decision of the Board which is the subject of the appeal; or
(b)remit the case to the Board with directions as to the action to be taken by the Board.