26.—(1) The Tribunal may, having reviewed all or part of a decision—
(a)set aside or vary the decision by certificate signed by the chairman (or if as a result of his death or incapacity he is unable to sign, or if he ceases to be a member of the chairmen’s panel, by another member of the Tribunal); and
(b)substitute such other decision as it thinks fit or order a rehearing before the same or a differently constituted Tribunal.
(2) If any decision is set aside or varied (whether as a result of a review or by order of the High Court), the Secretary shall alter the relevant entry in the records to conform to the chairman’s certificate or the order of the High Court and shall notify the parties accordingly.
(3) Any decision of the Tribunal under this regulation may be taken by a majority and the decision shall record whether it was unanimous or taken by a majority.