(1) Notwithstanding anything in article 5 of Schedule 1, on an application to the High Court by any party—
the High Court shall have jurisdiction to determine any question of law arising in the course of the arbitration.
(3) With the leave of the High Court, any party may, within 1 month from the date of any determination of the High Court, under this clause or within such further time as that court may allow, appeal from that determination to the Court of Appeal.