The UK Arbitration Act 2025, which entered into force on 1 August 2025, introduces two structurally significant reforms: a statutory power for arbitral tribunals to dispose summarily of claims or defences that have no real prospect of success, and a codified duty on arbitrators to disclose circumstances that might reasonably give rise to justifiable doubts as to their impartiality or independence. Together, these provisions reshape how parties and their advisers approach both case strategy and tribunal constitution across all arbitrations seated in England, Wales and Northern Ireland.
The Legislative Context: Why the 2025 Act Matters
The Arbitration Act 1996 had served as the governing framework for arbitration in England for nearly three decades. Although widely regarded as a sophisticated regime, practitioners and the Law Commission identified a range of areas where the statute either lagged behind international best practice or generated unnecessary litigation. The Arbitration Act 2025 is the product of that review. Its entry into force on 1 August 2025 marks the most consequential statutory reform to English arbitration law since 1996.
Two features of the new Act have attracted particular attention in the months since commencement. First, the codification of a default rule on the governing law of the arbitration agreement – now the law of the seat of arbitration absent express agreement to the contrary – resolves years of uncertainty following conflicting High Court decisions. Second, the reformed section 67 challenge procedure introduces tighter procedural constraints on jurisdictional challenges in court. Both changes interact with the new summary disposal and disclosure regimes in ways that practitioners are only beginning to work through.
Summary Disposal: Scope and Mechanics
The summary disposal power grants a tribunal authority to determine a claim, defence or issue on a summary basis where the relevant party's position has no real prospect of success and there is no other compelling reason for the matter to proceed to a full hearing. This borrows the familiar threshold from Civil Procedure Rules Part 24, but its operation in an arbitral context raises a distinct set of questions that CPR case law cannot fully answer.
Several features of the new power merit careful consideration:
- Scope: The power applies to claims, counterclaims, defences and discrete issues. A party may therefore apply to dispose summarily of a single causation issue while leaving quantum to a full evidentiary hearing, or seek to extinguish a counterclaim that is unsupported by any viable legal theory.
- Institutional and ad hoc contexts: In institutional arbitration, any institutional rules that conflict with the statutory power will need to be read alongside it. In ad hoc arbitration, where no institutional rules apply, the statutory power operates without any procedural overlay, giving tribunals broader discretion over the procedural framework for applications.
- Standard of determination: The Act adopts the "no real prospect of success" formulation, but tribunals retain the residual discretion to refuse summary disposal where there is a "compelling reason" to proceed to a full hearing. Identifying the boundary of that residual discretion is likely to generate early disputes.
- Enforcement considerations: A summary award remains an arbitral award for the purposes of the New York Convention and Part III of the Arbitration Act 1996 (as preserved). Where enforcement is sought abroad, the summary nature of the proceedings may be scrutinised for due process compliance, particularly in jurisdictions that apply a broad public policy filter to arbitral award enforcement.
- Interaction with the arbitration clause: Parties who drafted their arbitration clause before August 2025 may not have contemplated the new summary procedure. Where the clause is silent on procedural matters, the statutory default applies. Drafters of new clauses should consider whether to expand or restrict the tribunal's power by agreement.
Tribunals acting as summary decision-makers must be attentive to due process requirements. The risk that an enforcement court – whether in the United Kingdom or a New York Convention state – finds that a party was not given a reasonable opportunity to present its case is a genuine one. Practitioners advising claimants and respondents alike should build procedural safeguards into any summary disposal application from the outset.
If you are assessing how the summary disposal power applies to a pending or contemplated arbitration, the team at Ferraz & Whitmore can assist with procedural strategy and drafting. Please contact us at info@ferrazwhitmore.com or visit our contacts page.
Arbitrator Disclosure: The New Statutory Duty
The Arbitration Act 2025 places on a statutory footing a continuing duty on arbitrators to disclose circumstances that might reasonably give rise to justifiable doubts about their impartiality or independence. Although disclosure obligations were already embedded in the practices of major institutions and reflected in soft-law instruments, their elevation to statute has several concrete consequences.
First, the duty is continuing: it arises at the point of appointment and persists throughout the proceedings. An arbitrator who becomes aware of a relevant circumstance mid-hearing – for example, a new professional relationship with a party or an interest in connected litigation – is required to disclose it without delay. Failure to do so may found a challenge or, ultimately, a section 67 or section 68 application in the High Court.
Second, the objective standard – what a reasonable person would consider material – provides greater predictability than purely subjective approaches, but leaves meaningful room for dispute. The relevant question is not whether the arbitrator personally believes the circumstance is immaterial, but whether an informed, objective observer might reasonably disagree. Arbitrators who underestimate the scope of this standard, particularly in repeat-player scenarios common in commodity, energy and financial services arbitration, face elevated challenge risk.
Third, the disclosure duty intersects with the reformed section 67 challenge procedure. The 2025 Act tightens the procedural conditions for bringing a section 67 challenge to the High Court, including restrictions on raising new arguments on challenge that were not advanced before the tribunal. Where a failure to disclose is only discovered after an award is rendered, the interaction between the disclosure duty, section 68 (serious irregularity) and the new section 67 framework will need to be navigated carefully.
Practical Disclosure Questions
Parties and arbitrators will need to address a range of practical questions that the Act does not exhaustively resolve:
- What prior co-arbitrator relationships must be disclosed, and over what time horizon?
- How should financial interests in entities connected to a party – for example, through investment vehicles regulated by the FCA or subject to OFSI designations – be assessed?
- Where a party is a corporate group, does a relationship with one affiliate trigger disclosure in a dispute involving another? Company structures registered at Companies House may be relevant but are not always transparent.
- In investor–state arbitrations or cross-border disputes involving regulated counterparties, do public law obligations modify the private law disclosure standard?
There is no single answer to these questions under the Act as currently enacted. First court decisions under the new regime are expected in 2026, and those decisions will be critical in calibrating the practical scope of the duty. Until the courts speak, parties and arbitrators should err on the side of fuller disclosure and maintain clear contemporaneous records of disclosure decisions.
Cross-Border Implications
For foreign parties and investors using England as their seat of arbitration – a common choice for transatlantic, African and Asian commercial disputes – the new disclosure regime and summary disposal power will alter the risk calculus at several stages.
At the arbitration clause drafting stage, counterparties negotiating seat provisions should weigh the new statutory defaults. The rule that the governing law of the arbitration agreement defaults to the law of the seat means that parties choosing London as their seat under English-law governed main contracts will now have greater certainty, but parties choosing London under foreign-law governed main contracts should review their arbitration clauses with care.
For enforcement, the summary disposal power raises questions in jurisdictions outside the New York Convention mainstream, where courts may apply idiosyncratic due process standards. Parties seeking to enforce a summary award in markets where enforcement practice is less settled – a topic explored further in our analysis of foreign arbitral institutions and enforcement in Asia – should anticipate additional procedural scrutiny.
Investors structuring transactions through UK entities or using UK-based dispute resolution should also consider the interaction between arbitration strategy and corporate structuring. Our corporate law practice in the United Kingdom regularly advises on these intersections.
Strategic Recommendations for Parties and Counsel
The following observations reflect practical considerations for those engaged in, or planning for, arbitration under the new regime. They are not exhaustive, and the appropriate approach will depend on the specific facts and applicable institutional rules.
- Audit existing arbitration clauses: Agreements entered into before 1 August 2025 should be reviewed to determine whether the new statutory defaults apply and whether any amendment or clarification is warranted before a dispute crystallises.
- Build summary disposal into case strategy early: Whether as a potential applicant or a potential respondent, parties should assess from the outset whether any claim, defence or issue is vulnerable to summary disposal. Early assessment affects how pleadings are drafted, how resources are allocated and how settlement discussions are framed.
- Establish disclosure protocols at the outset: Arbitrators and appointing parties should implement a structured disclosure process at appointment, with documented follow-up at regular intervals. This reduces challenge risk and builds confidence in the award's enforceability.
- Prepare for section 67 reform: The tighter procedural conditions for High Court challenges mean that jurisdictional objections must be raised promptly and comprehensively before the tribunal. Reserving arguments for the court stage is now riskier than under the old regime.
- Consider institutional versus ad hoc frameworks: Where parties have flexibility in designing their arbitration, the new statutory powers may favour institutional rules that already address summary procedure and disclosure, providing a more predictable procedural framework.
Open Questions and the Road to 2026
The Arbitration Act 2025 resolves several long-standing uncertainties, but it also opens new ones. The "no real prospect of success" threshold and the "compelling reason" carve-out in the summary disposal provision will be tested. The outer boundaries of the statutory disclosure duty – in terms of subject matter, time horizon and the treatment of affiliated relationships – remain to be worked out. The interaction between the new section 67 procedure and existing CPR rules applicable to High Court supervision of arbitration is not yet fully mapped.
First court decisions are expected in 2026. Until those decisions provide interpretive guidance, parties operating under the new Act face a degree of normative uncertainty that careful procedural design can mitigate but not eliminate. Practitioners advising on English-seated arbitration will need to monitor the developing case law closely and be prepared to adjust their approach as the courts begin to define the contours of the new regime.
The reforms also have implications beyond domestic English arbitration. As a leading global seat, England's approach to summary disposal and arbitrator disclosure is likely to influence thinking in other common law jurisdictions and in the revision processes of international institutions. Our litigation and arbitration team in the United Kingdom tracks these developments as they unfold and advises clients on their cross-border significance.
Ferraz & Whitmore advises on arbitration strategy, tribunal constitution and award enforcement across multiple jurisdictions. To discuss how the Arbitration Act 2025 affects your situation, reach out to us at info@ferrazwhitmore.com or through our contacts page.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.