“in the event that a dispute between the parties was referred to adjudication pursuant to the Scheme and one party paid money to the other in compliance with the adjudicator’s decision made pursuant to the Scheme, that party remained entitled to have the decision finally determined by legal proceedings and, if or to the extent that the dispute was finally determined in its favour, to have that money repaid to it.”
“without prejudging whether it would be open to [Aspect] to raise any positive point on restitution, the Supreme Court may wish as part of the context to have explained the legal position regarding restitution.”
“108.- Right to refer disputes to adjudication. (1) A party to a construction contract has the right to refer a dispute arising under the contract for adjudication under a procedure complying with this section. For this purpose ‘dispute’ includes any difference. (2) The contract shall - (a) enable a party to give notice at any time of his intention to refer a dispute to adjudication; (b) provide a timetable with the object of securing the appointment of the adjudicator and referral of the dispute to him within 7 days of such notice; (c) require the adjudicator to reach a decision within 28 days of referral or such longer period as is agreed by the parties after the dispute has been referred; (d) allow the adjudicator to extend the period of 28 days by up to 14 days, with the consent of the party by whom the dispute was referred; (e) impose a duty on the adjudicator to act impartially; and (f) enable the adjudicator to take the initiative in ascertaining the facts and the law. (3) The contract shall provide that the decision of the adjudicator is binding until the dispute is finally determined by legal proceedings, by arbitration (if the contract provides for arbitration or the parties otherwise agree to arbitration) or by agreement. The parties may agree to accept the decision of the adjudicator as finally determining the dispute. (5) If the contract does not comply with the requirements of subsections (1) to (4), the adjudication provisions of the Scheme for Construction Contracts apply”
“(1) The Minister shall by regulations make a scheme (‘the Scheme for Construction Contracts’) containing provision about the matters referred to in the preceding provisions of this Part. …. (4) Where any provisions of the Scheme for Construction Contracts apply by virtue of this Part in default of contractual provision agreed by the parties, they have effect as implied terms of the contract concerned.”
“1(1) Any party to a construction contract (the ‘referring party’) may give written notice (the ‘notice of adjudication’) at any time of his intention to refer any dispute arising under the contract, to adjudication. … (3) The notice of adjudication shall set out briefly - (a) the nature and a brief description of the dispute and of the parties involved, (b) details of where and when the dispute has arisen, … 19(1) The adjudicator shall reach his decision not later than - (a) twenty eight days after receipt of the referral notice mentioned in paragraph 7(1), or (b) forty two days after receipt of the referral notice if the referring party so consents, or (c) such period exceeding twenty eight days after receipt of the referral notice as the parties to the dispute may, after the giving of that notice, agree. … 23(2) The decision of the adjudicator shall be binding on the parties, and they shall comply with it until the dispute is finally determined by legal proceedings, by arbitration (if the contract provides for arbitration or the parties otherwise agree to arbitration) or by agreement between the parties.”