s 103 Arbitration.
Any question which is required by this Act or by any regulation thereunder to be determined by arbitration shall be determined by a single arbiter agreed upon by the parties, or, failing such agreement, appointed by the Court of Session on the application of any of the parties to the question; and at any stage in the proceedings in any such arbitration the arbiter may, and shall if so directed by the Court of Session, state a case for the opinion of that Court on any question of law arising in the arbitration.