“Challenging the award: serious irregularity. 68.—(1) A party to arbitral proceedings may (upon notice to the other parties and to the tribunal) apply to the court challenging an award in the proceedings on the ground of serious irregularity affecting the tribunal, the proceedings or the award. A party may lose the right to object (see section 73) and the right to apply is subject to the restrictions in section 70(2) and (3). (2) Serious irregularity means an irregularity of one or more of the following kinds which the court considers has caused or will cause substantial injustice to the applicant— … (d) failure by the tribunal to deal with all the issues that were put to it … (3) If there is shown to be serious irregularity affecting the tribunal, the proceedings or the award, the court may— (a) remit the award to the tribunal, in whole or in part, for reconsideration, (b) set the award aside in whole or in part, or (c) declare the award to be of no effect, in whole or in part. ”
“Correction of award or additional award. 57.—(1) The parties are free to agree on the powers of the tribunal to correct an award or make an additional award. (2) If or to the extent there is no such agreement, the following provisions apply. (3) The tribunal may on its own initiative or on the application of a party— (a) correct an award so as to remove any clerical mistake or error arising from an accidental slip or omission or clarify or remove any ambiguity in the award, or (b) make an additional award in respect of any claim (including a claim for interest or costs) which was presented to the tribunal but was not dealt with in the award. These powers shall not be exercised without first affording the other parties a reasonable opportunity to make representations to the tribunal. (4) Any application for the exercise of those powers must be made within 28 days of the date of the award or such longer period as the parties may agree. (5) Any correction of an award shall be made within 28 days of the date the application was received by the tribunal or, where the correction is made by the tribunal on its own initiative, within 28 days of the date of the award or, in either case, such longer period as the parties may agree. (6) Any additional award shall be made within 56 days of the date of the original award or such longer period as the parties may agree. (7) Any correction of an award shall form part of the award.”