This case study is an anonymised composite based on publicly reported PI claim patterns. It is not actual Apex client data and does not constitute legal or insurance advice. Names, locations and identifying details have been changed. Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority, FRN 724952.
A specialist commercial disputes boutique, three partners, fee income around £2.9m, with a heavy commercial litigation practice serving owner-managed businesses, family-controlled investors and a small number of insurers on subrogated recovery work. The firm runs lean, with associates carrying significant volumes of disclosure and bundling work supported by paralegal capacity.
The firm was acting for the claimant in a substantial breach-of-warranty claim against the seller of a manufacturing business — a matter close to trial and in the throes of disclosure. The disclosure exercise had identified a large body of privileged material, including legal advice from the firm and from leading counsel on the merits of the claim and the prospects of various settlement scenarios. Disclosure was being managed through a third-party e-disclosure platform with role-based access and a carefully maintained privilege log.
Final exchange of disclosure was made by upload to a shared review platform with corresponding privilege schedule. An associate, working late on the evening of the deadline, used the platform to send a final tranche of bundling materials to the firm’s own counsel. The associate inadvertently selected, from a saved-recipients list, the email address of an assistant at the opposing law firm — an email address that had been added to the saved-recipients list earlier in the litigation for permitted correspondence. The attachment was a 380-page bundle that included three documents bearing legal advice on settlement strategy that should not have been disclosed.
The error was identified within fifteen minutes when the associate noticed an automated read receipt from the opposing assistant’s account. An immediate “claw-back” email was sent invoking the CPR 31.20 procedure for inadvertent disclosure. The opposing solicitors confirmed they had quarantined the material and would not review it. Their conduct was correct. The damage, however, lay in what had been done in the fifteen-minute window of viewing and in the broader regulatory exposure.
There were three exposures, only one of which had the character of a civil claim against the firm.
First, the firm’s own client had a potential negligence claim. The settlement-strategy advice that had been disclosed addressed the client’s commercial sensitivity to a certain settlement number; argument followed that, even with formal claw-back, the opposing side had inevitably absorbed the strategic intelligence and the client’s negotiating position had been impaired. After leading-counsel advice on both sides, the client agreed that the practical impact was real but limited; settlement of the underlying litigation followed at a number approximately £210,000 below the firm’s pre-incident assessment of the likely settlement range. The client claimed that delta against the firm.
Second, an ICO referral followed the firm’s own self-reporting under UK GDPR Article 33 within 72 hours of the breach. The ICO investigation closed with a reprimand and the firm’s commitment to a programme of remediation; no monetary penalty was imposed.
Third, an SRA notification produced a regulatory investigation. The firm’s prompt remediation, training programme and tighter controls on saved-recipients functionality were credited. The matter closed with a recorded outcome letter.
The civil claim was framed in negligence under Hedley Byrne principles and as breach of the implied duty of confidentiality. The pleaded loss was the impairment in settlement value, an element of wasted disclosure cost, and interest. Pleaded quantum was approximately £245,000.
The firm’s MTC-compliant primary PI cover responded to the civil claim from the client without question; section 5 notification was made on the day the breach was identified. The £2m limit was sufficient and the £15,000 excess applied.
A separate point arose on the firm’s cyber liability cover. The cyber wording in place at the time covered “first-party” costs (forensics, notification, legal counsel) of a data breach in addition to the regulatory defence cover. The two wordings — primary PI and cyber — each had a role and required coordinated handling to avoid the insurers each taking the position that the other was the primary cover. The firm’s broker (Apex, on a counter-factual basis) would have managed that coordination from day one. In the absence of such coordination, time and legal cost can be lost on insurers’ “which wording responds” debates.
The civil claim was defended with focus on causation: the question was not whether the disclosure was wrong (it plainly was) but the quantum of the difference between the actual settlement and the counterfactual settlement absent disclosure. After mediation the matter settled at approximately £142,000 plus a modest contribution to costs.
The settlement was paid. The ICO reprimand was published and the firm made a structured operational change: the saved-recipients list was reset and contact-by-contact reauthorised, automated DLP rules were applied to outgoing email with attachments, and a formal protocol introduced for end-of-day large-bundle dispatch requiring partner sign-off. The firm’s PI renewal experienced a rate-on-fees increase of approximately 21%, partly absorbed by the firm’s strong renewal pack. The cyber wording was upgraded substantially with input from coverage counsel.
Disclosure-stage misdirections are now one of the most common notifications across litigation-heavy firms. First, the technical controls — DLP, recipient confirmation prompts on large attachments, role-based access on e-disclosure platforms — should be benchmarked against the firm’s actual disclosure workflow, not against a generic IT standard. Second, after-hours bundling at deadline pressure is the highest-risk moment in a litigation file; protocols should be designed around that risk rather than around a notional 9–5 operating environment. Third, the coordination between primary PI cover and cyber cover is a renewal-priority discussion; the wordings should not contradict each other on which responds first to a privilege loss event. Fourth, ICO and SRA notifications run on different clocks (72 hours and “promptly”) and have different audiences; legal counsel should be on both within the first day. Fifth, the renewal disclosure should evidence the post-event controls and ideally an independent IT/process review certificate; underwriters value that evidence over self-attestation.
We would have ensured the primary PI notification and the cyber notification went in coordinated form on the day of the incident, with a single coverage counsel instructed to address any potential wording overlap before it became a problem. At the regulatory touchpoints we would have helped frame the ICO and SRA communications to be consistent. For renewal, we would have walked underwriters through the documented technical controls, the staff training programme and the independent review certificate — a presentation that, in our experience, reduces the rating effect of a privilege loss event by enough to make the preparation effort worthwhile.
Apex Insurance Brokers serves UK professional services firms and commercial businesses. Call 0117 325 0027, email hello@apexinsurancebrokers.co.uk, or request a quotation.
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