12.—(1) Any person aggrieved by a decision of the Board under section 11(1) may appeal to the Appeal Tribunal established under section 13.
(2) Notice in writing of such appeal together with the grounds thereof shall be given to the Appeal Tribunal within 14 days of the receipt by the person aggrieved of the notice given under section 11(1), and a copy of the notice of appeal and the grounds thereof shall be served upon the Board by the appellant. Every notice given to the Appeal Tribunal under this subsection shall be sent to such address in Singapore as may be specified by the Appeal Tribunal.
(3) The appellant may, if he so desires, be present at the hearing of his appeal and may be heard either in person or by any person authorised by him in that behalf.
(4) At the hearing of an appeal, the Appeal Tribunal may allow the appeal, confirm or vary, within the limits specified in section 11(1), the decision of the Board, and any decision of the Appeal Tribunal shall be final and conclusive and shall be enforceable in the same manner as a decision of the Board.
(5) The Appeal Tribunal shall regulate its own procedure at the hearing of any such appeal and shall not be bound by any law or rule of practice relating to the admissibility of evidence.
(6) The Appeal Tribunal may, in its discretion, from time to time extend any limit of time fixed for the giving of a notice of appeal.