Braunford LLP & Anor v Allain [2025] EWHC 2545 (Ch) (06 October 2025)

Braunford LLP & Anor v Allain [2025] EWHC 2545 (Ch) (06 October 2025)

Disclosure issues proposed by the defendant (issues 4 and 8) are refused as irrelevant, duplicative, and disproportionate; agreed issue 6 suffices for value assessment. All defendant's email accounts must be searched for non-privileged, disclosable documents. Permission to call expert evidence is refused as unnecessary and not proportionate to the issues in dispute.

Citation
[2025] EWHC 2545 (Ch)
Parties
Claimant: Braunford LLP; Claimant: Corbiere Limited; Defendant: Pierre Allain
Jurisdiction
England and Wales
Judgment Date
06 October 2025
Procedural Posture
Intellectual Property / Employment / Breach of Confidence / Case Management Hearing, Disclosure and Expert Evidence Applications
Outcome
Defendant's applications for extended disclosure (issues 4 and 8) and permission to call expert evidence are refused. Disclosure review document to require search of all defendant's email accounts.
Legal Topics
Disclosure, Expert Evidence, Trade Secrets, Injunctive Relief, Copyright Infringement, Case Management
Employment Intellectual Property Confidential Information Civil Procedure Disclosure Expert Evidence Trade Secrets Injunctive Relief +2 more

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Parties

Braunford LLP

Claimant

Corbiere Limited

Claimant

Pierre Allain

Defendant

Procedural Posture

Intellectual Property / Employment / Breach of Confidence / Case Management Hearing, Disclosure and Expert Evidence Applications

Legal Issues

  1. 1 Whether defendant should be permitted to call expert evidence on quantitative or algorithmic trading strategies
  2. 2 Scope and model of extended disclosure for confidential information and trading strategies
  3. 3 Relevance and proportionality of disclosure issues

Ratio Decidendi

Disclosure issues proposed by the defendant (issues 4 and 8) are refused as irrelevant, duplicative, and disproportionate; agreed issue 6 suffices for value assessment. All defendant's email accounts must be searched for non-privileged, disclosable documents. Permission to call expert evidence is refused as unnecessary and not proportionate to the issues in dispute.

Court Disposition

Defendant's applications for extended disclosure (issues 4 and 8) and permission to call expert evidence are refused. Disclosure review document to require search of all defendant's email accounts.

Orders

  • Disclosure review document to include search of all defendant's email accounts for non-privileged, disclosable documents.
  • No permission for defendant to call expert evidence on quantitative or algorithmic trading strategies.