The Arbitration Act: A New Era for London as a Global Seat

London has officially reinforced its status as the world’s premier destination for international dispute resolution with the implementation of the Arbitration Act 2025. Following an extensive review by the Law Commission of England and Wales, the new legislation—which received Royal Assent on February 24, 2025—has replaced the nearly three-decade-old 1996 framework for all arbitrations commenced after August 1, 2025.

The 2025 Act represents an evolutionary rather than revolutionary step, focusing on efficiency, clarity, and modern practical needs.

5 Critical Pillar of the 2025 Reform

The new Act introduces five fundamental shifts that every international practitioner and commercial entity must understand:

Default Governing Law of the Arbitration Agreement (Section 6A)

The complex closest connection test established in Enka v Chubb has been superseded. Under the new Act, unless parties expressly agree otherwise, the law governing the arbitration agreement is automatically the law of the seat. This provides immediate certainty and prevents protracted jurisdictional battles.

Statutory Power of Summary Disposal (Section 39A)

To combat guerrilla tactics and meritless claims, arbitrators now have the explicit statutory power to issue summary awards. Claims or defenses that have no real prospect of success can be dismissed early, significantly reducing time and costs for the prevailing party.

Codified Duty of Disclosure

Building on the Supreme Court’s decision in Halliburton v Chubb, the Act now mandates a statutory continuing duty for arbitrators to disclose any circumstances that might give rise to justifiable doubts about their impartiality. This transparency bolsters the integrity of the London seat.

New Regulation on Challenges to Arbitral Awards

When the jurisdiction of the arbitral tribunal is challenged before the court, the proceedings are no longer conducted as a de novo hearing, but rather as a review. This prevents parties from sabotaging the process by introducing evidence in court that they failed to submit during the arbitration.

Enhanced Arbitrator Immunity

To ensure independence, the Act strengthens the immunity of arbitrators. They are now protected from liability for costs relating to applications for their removal and for resigning, provided they did not act in bad faith or unreasonableness.

Comparative Overview: 1996 Act & 2025 Act

Preserving the Status Quo: What Remained?

The Law Commission and Parliament intentionally left certain aspects untouched to preserve the flexibility of English law:

• Confidentiality: Remains governed by robust common law principles rather than a one-size-fits-all statute.
• Section 69 Appeals: The right to appeal on a point of law remains available (unless opted out), supporting specific sectors like maritime and commodities.

Expert Legal Support for the New Era

The transition to the Arbitration Act 2025 requires a proactive review of existing arbitration clauses and future dispute strategies. Navigating these changes demands a deep understanding of both the old precedents and the new statutory mandates.

As Esenyel Partners, we are fully prepared to provide you with the strategic legal guidance and expertise needed to navigate this new landscape of international arbitration.