The High Court, in a considered judgement following a case management conference, addressed key procedural disputes regarding disclosure and the admissibility of expert evidence in an expedited trade secrets and breach of confidence claim.
Facts:
Mr. Allain is a data scientist who had been employed by Braundford LLP since 30 June 2021 until his resignation on 24 March 2025, when he was placed on 12 months' paid garden leave until 24 March 2026. Braundford LLP is an entity that researches and develops quantitative trading strategies and is part of the G-Research Group.
On Friday, 21 March 2025, Mr. Allain accepted a job offer from one of G-Research's principal competitors, Citadel Securities LLC. In the period immediately following the defendant's resignation, it became clear to the claimants that the defendant had copied and misused information that the claimants contend contains confidential information and trade secrets. The defendant admits to copying text files and taking photographs of his laptop screen using a personal iPad provided to him by Citadel Securities, but contests that the information was of a trade secret quality and denies disseminating it.
The claimants contend that the defendant breached his contractual obligations, equitable and fiduciary duties of confidence (including those detailed under the Trade Secrets Regulations (TSRs) 2018), misused confidential information, infringed copyright, and was unjustly enriched. The claimants seek a final injunction extending for two years beyond the defendant's garden leave period, as well as financial and other remedies. The defendant denies liability, claiming that the text files were for interview preparation and the photographs were an impulsive aide-memoire, neither of which was disseminated.
Decision:
The outcome of this case management hearing was a mixed decision, with the Judge refusing most of the defendant's requests but granting permission for expert evidence on a single remaining issue on the basis of proportionality and necessity for a fair trial.
The Court refused the defendant's applications for extended disclosure because they were deemed unreasonable and disproportionate. The litigation's true focus is on the confidential material the defendant admits misappropriating. The Court agreed that ordering disclosure relating to work done by teams excluding the defendant would afford him access to further confidential material.
The Court accepted the claimants' submission, ordering the defendant to search all his email accounts, including those created post-litigation, based on the continuing duty of disclosure.
Permission was granted only for the practical utility of the confidential information, reformulated as assessing whether it would assist a hypothetical competitor. The Judge reasoned that this evidence was reasonably required to allow fair and equal participation.
Implications:
Copying potential trade secrets can have far-reaching consequences in employment law because such information is the lifeblood of specialised companies, and its misuse can destroy a competitive advantage. The primary consequences revolve around the severe nature of injunctive relief and the high cost of litigation.
The implications for an employee and the former employer extend well beyond a simple contract breach. Copying trade secrets breaches several duties simultaneously: breaching the employment contract's confidentiality clauses, the equitable duty of confidence, and the fiduciary duty.
An employer will typically seek a "springboard" injunction to prevent the former employee and their new employer from gaining an unfair "head start" from the misappropriated information. This injunction aims to neutralise the advantage gained from the misuse and lasts for the period it would take a competitor to legitimately develop the same information.
As seen in this case, the employer often seeks an injunction that restrains the employee from working for a competitor for a specific period. Even if the employment contract lacks a non-compete clause, the Court may impose a long restraint if it determines the employee poses an ongoing threat due to their unique and intimate knowledge of the secrets. This effectively bars the employee from practicing their trade in their industry, destroying career momentum. Regardless of the final judgement, the very act of being sued for trade secret theft can permanently damage an employee's reputation within a small, specialised industry.
