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Disclosure and collateral use lessons for litigants

Published 20 Oct 2026 | By Partner James Petkovic and Associate Aurelia Matonis.

The English High Court in Bourlakova v Estate of Bourlakov has confirmed that an order to disclose arbitral material is to be honoured even where the arbitral tribunal has refused permission to do so. The judgment is also a timely reminder that arbitral confidentiality is not a trump card, and that collateral use must be justified document by document.

Tags: Arbitration | Civil Procedure | Confidential information | Cross-border | Disclosure