When will the DIFC Courts set aside an arbitral award for procedural unfairness?

The DIFC Courts have long adopted a “maximum support, minimum interference” approach to DIFC-seated arbitrations, reflecting the importance of arbitral autonomy and finality and the high threshold for judicial intervention. Against that background, two recent decisions, Oheo Bank v Parker [2025] DIFC CA 006 and Princeton v Persephone ARB 015/2026 ARB 027/2026, provide important guidance on the limits of that approach. Together, they confirm that, although the threshold for setting aside an award remains high, arbitral finality cannot override a party’s right to a fair opportunity to present its case.

Oheo Bank v Parker: defining the threshold for intervention

In Oheo Bank v Parker, the DIFC Court of Appeal considered, for the first time, the principles underlying Articles 41(2)(a)(ii) and (iii) of the DIFC Arbitration Law. By a majority, the tribunal awarded Parker EUR 1 million on a claim that had not been pleaded before appearing in Parker’s post-hearing brief. The Bank identified the allegation as unpleaded and stated that it would address it if directed to provide a supplemental brief.

The Court of Appeal found that the successful claim represented a significant departure from the case previously advanced. Although the subject matter was arguably sufficiently “in play” to fall within the scope of the submission to arbitration, the Bank had not been given a reasonable opportunity to respond to the materially altered claim and its essential building blocks. If the tribunal was attracted to the new claim, it should have invited the Bank to address it before issuing the award.

The Court emphasised that the supervisory role of the DIFC Courts remains deliberately limited. Courts should be slow to intervene and must guard against procedural challenges being used as disguised appeals on the merits. Intervention requires “real unfairness or real practical injustice” involving a failure to meet minimum standards of due process and substantive fairness.

An applicant need not establish that the outcome would necessarily have been different. It is sufficient to show that the submissions it would have made were reasonably arguable and could reasonably, rather than fancifully, have affected the result.

The judgment also clarifies how the scope of the submission to arbitration should be determined. Rather than focusing exclusively on the pleadings, the Court must consider the proceedings “in the round”, including the pleadings, agreed lists of issues, opening statements, evidence and closing submissions. Pleadings are the starting point, but not necessarily the finishing point.

Princeton v Persephone: applying the principles

The DIFC Court of First Instance subsequently applied those principles in Princeton v Persephone. The case concerned a majority award in a DIFC-seated arbitration under the Dubai International Arbitration Centre Rules, requiring the claimant in the set-aside proceedings to pay more than USD 18 million, together with interest and costs.

The arbitration was conducted on the papers. The Court found that the majority tribunal had resolved central aspects of the dispute by relying on matters neither party had advanced. These included findings that there was no agreed payment date, that the parties’ conduct had affected the payment obligation and that there was no reason to doubt the buyer’s willingness or ability to pay. Those matters first appeared in the final award.

The Court held that, where a tribunal considers that resolving a dispute depends on an issue not raised by the parties, it must give them an opportunity to address it. Depending on the circumstances, that may require further legal submissions, additional evidence or both. A tribunal cannot fairly determine a case by reference to a decisive issue that has not been put to the parties.

Applying Oheo Bank v Parker, the Court concluded that the arguments the applicant would have advanced were reasonably arguable and could have made a difference. Because the unaddressed issues formed the foundation of the majority’s reasoning and could not be severed, the award was set aside and the related recognition claim dismissed.

Practical implications

The decisions do not signal a broader willingness by the DIFC Courts to revisit arbitral awards. A tribunal may assess the evidence independently and reach conclusions different from those advocated by the parties. It need not consult them on every inference or analytical step. However, where a decisive issue represents a material departure from the cases presented, the affected party must have a reasonable opportunity to respond.

For parties and counsel, the judgments underline the importance of identifying late or unpleaded claims promptly, preserving objections and explaining the evidence or submissions required to answer them. For tribunals, they provide a practical safeguard: if an unaddressed issue may materially influence the outcome, focused submissions should be invited before the award is issued.

Ultimately, the decisions reinforce rather than weaken the DIFC’s arbitration framework. Arbitral autonomy and finality remain paramount, but they operate within a process that must give each party a fair opportunity to meet the case on which the dispute will ultimately be decided.