The binding legal principles established are: (1) The principle of party autonomy in arbitration proceedings is fundamental and must be respected by courts. (2) Under section 33(1)(b) of the Arbitration Act 42 of 1965, 'gross irregularity' means conduct that prevented a fair trial of the issues - it is a process standard similar to grounds of review of inferior courts, but common law grounds of review are excluded. (3) 'Exceeding powers' under section 33(1)(b) means purporting to exercise jurisdiction or power the tribunal does not have, not merely erroneous exercise of power actually vested in the tribunal. (4) An arbitrator's powers are determined by reference to the Arbitration Act, the arbitration agreement, the pleadings (or statements of case), and any other documents prepared by the parties defining the scope of the arbitration. (5) Where parties agree that issues for arbitration are those set out in their Notices of Dissatisfaction, an arbitrator determining those issues does not exceed jurisdiction. (6) Modern arbitral practice permits less formal, more robust procedures than courts, provided the procedure is fair to both parties and conforms to natural justice. (7) Where a party has notice of issues to be determined, has opportunity to address them, and does address them, there is no denial of a fair hearing even if the procedural format differs from court proceedings. (8) Courts must give effect to the advantages of arbitration - speed, efficiency, flexibility and finality - and not undermine these through overly interventionist review.