Anonymized Summary of the Opinion (Appellate Court)

Factual and Procedural Background

This appeal concerns an application for judicial review of a decision by the respondent, the Financial Ombudsman (referred to below as "Respondent" or "Company B"), in relation to a complaint by a client ("Client") of the appellant investment firm ("Appellant" or "Company A"). Company A marketed and offered a computer-driven trading strategy (the "Pembroke strategy") that used derivatives (contracts for differences, "CFDs") and was described as intended for professional/institutional investors. The Client, who was not a professional investor and had no prior CFD trading experience (according to findings later made by the Respondent), completed Company A's account opening documentation including tick-box indications that purported to show prior CFD trading experience, and signed an application requesting elective professional client status under the applicable FCA Conduct of Business rules (COBS 3.5R).

Company A accepted the Client as an elective professional client. The Client deposited funds and Company A managed the portfolio using the Pembroke strategy, primarily trading short-term CFDs. The Client's portfolio lost approximately half its value over the relevant management period. The Client complained to Company A and then to Company B. Company B concluded that Company A had not conducted an adequate assessment required by COBS 3.5.3R, had mismanaged the account, and had provided misleading information; it therefore ordered Company A to compensate the Client by reference to a notional benchmark FTSE UK private investors income total return index (with interest).

Company A sought judicial review of Company B's decision; the first instance judge ("Judge Stacey") rejected Company A's application. Company A appealed with permission on three grounds which broadly map to (1) the lawfulness of Company B's finding that Company A failed to comply with COBS when accepting the Client as an elective professional client, (2) the rationality of Company B's choice of a FTSE-based benchmark to calculate compensation, and (3) the refusal to reduce the award to reflect the Client's contributory fault in making inaccurate statements on the account forms. The appellate panel dismissed Grounds 1 and 2 and allowed Ground 3 in part, remitting the question of any contributory-negligence reduction back to Company B to determine.

Legal Issues Presented

1. Whether Company B lawfully and rationally concluded that Company A failed to carry out an adequate assessment under COBS 3.5.3R and therefore wrongly categorised the Client as an elective professional client.
2. Whether Company B's selection of a FTSE UK Private Investors Income total return index as the benchmark for quantifying compensation was irrational in light of the Client's voluntary application to invest in a higher‑risk, derivative‑driven strategy.
3. Whether Company B was required to reduce the Client's award to reflect contributory negligence by the Client in providing inaccurate information on the account application, and if so whether Company B's refusal to reduce the award was legally correct or irrational.

Arguments of the Parties

Appellant's Arguments (Company A)

• Company A submitted that the account forms and signed representations from the Client constituted adequate, detailed, and signed evidence on which Company A was entitled to rely in accepting the Client as an elective professional client under COBS 3.5.3R.
• Company A contended that COBS 3.5.3R imposed procedural requirements but did not impose on Company A a substantive duty to "get the classification right" beyond following the procedural assessment; accordingly relying on the Client's written representations was lawful.
• Company A argued that Company B's view that the account process was merely "tick box self‑certification" was irrational, that Company B ignored the legal importance of signed representations and contract principles, and wrongly required documentary corroboration or further inquiry.
• On quantum, Company A argued it was irrational to choose a conservative FTSE benchmark for redress when the Client had willingly applied for a high risk, derivative‑levered strategy; the award should reflect the higher risk profile the Client sought.
• On contributory negligence, Company A argued that the Client's misrepresentations about past CFD trading and employment in the financial sector caused Company A to accept the Client and thereby were causative of the losses; the award should have been reduced under the Law Reform (Contributory Negligence) Act 1945.

Respondent's Arguments (Company B and Respondent's Notice)

• Company B defended its Decision on the basis of the breadth of its DISP remit and its statutory duty to determine what is fair and reasonable, contending it properly assessed the documentary record and other factors when concluding Company A did not carry out an adequate assessment under COBS.
• Company B relied on the objective aspect of the qualitative and quantitative tests in COBS 3.5.3R and on features of the paperwork that put Company A on inquiry (e.g. a handwritten answer about "blue chip stocks" but no supporting evidence of CFD trading, and the account form's own requirement that supporting evidence be attached).
• By Respondent's Notice, Company B argued that even if there were legal error(s), section 31(2A) Senior Courts Act 1981 might bar relief because it is highly likely the outcome would not have been substantially different had any purported error not occurred; Company B relied on a witness statement asserting the Decision would have been the same on fairness/reasonableness grounds.

Table of Precedents Cited

Precedent	Rule or Principle Cited For	Application by the Court
Company C v Individual A [1992] QB 98	Definition/explanation of the nature of contracts for differences (CFDs) and that they are contracts intended to end in payment of differences rather than delivery of underlying assets.	The court relied on the definition to explain CFDs' characteristics (leverage, cash settlement) which underpinned the view that CFD trading is materially different from conventional stock investment.
Company D v Individual B [1896] AC 166	Historic authority that cash‑settled CFDs were held in older cases to be void as gambling contracts under the Gaming Act 1845 (context on CFDs usage).	Cited to show historical treatment and risk profile of CFDs; used to contextualise the riskiness and speculative nature of CFDs.
Company E v Individual C [2008] EWHC 1136	Principle that classification under relevant rules may depend on compliance with procedural requirements rather than purely on objective characteristics of the client.	The court applied the approach that whether a client is appropriately classified turns on whether the firm complied with the procedural requirements (COBS), supporting the analysis that compliance with COBS procedures is central.
Company F v Company G [2011] EWHC 138	As to standards of "reasonable care" in client assessment; client self‑statements may be taken at face value unless there is reason for further scrutiny.	The opinion acknowledged this principle but held that in the present case there were reasons (inconsistencies, omissions, absence of required evidence) to require further enquiry beyond taking answers at face value.
Individual D v Company H [1934] 2 KB 394	General proposition that a person is bound by clauses in a written contract they sign (contractual binding effect of signature).	The court observed these contract principles but concluded they did not directly determine regulatory compliance under COBS because the representations relied on were not express contractual terms and the issue was regulatory assessment not private contract formation.
Company I v Company J [2006] EWCA Civ 386	Similar contractual principle to L'Estrange (importance of signed contractual terms).	The court noted this authority but said it was of limited relevance to the regulatory compliance question under COBS 3.5.3R.
Company K v Individual E [2006] EWCA Civ 1551	Classic statement of the requirements for estoppel by representation: clear representation, reasonable foreseeability of reliance, and detriment if representation not honoured.	The court used these estoppel principles to explain that a representation must be clear and reliance reasonable; that regulatorily accountable firms cannot simply rely on unclear client self‑certification where circumstances call for further inquiry.
Company L v Company B [2024] EWCA Civ 541	Authority that the Ombudsman is not required to decide disputes according to common law and must reach an opinion about what is fair and reasonable, considering DISP factors; also that a clear explanation is required where the Ombudsman departs from applicable law.	The court relied on this decision to frame the scope of Company B's remit and to emphasise the need for reasons when the Ombudsman departs from legal norms.
R (Company M) v Company B [2008] EWCA Civ 642	Requirement for the Ombudsman to explain reasons and to justify any divergence from the "relevant law" in a way that can be judicially reviewed.	Used to stress that the Ombudsman must make reasoning clear so decisions are understandable and amenable to review; supported the need to explain departures from law.
R (Company N) v Company B [2006] EWHC 2466	That an Ombudsman's award of compensation must have a logical connection to the complaint established.	The court applied the principle to assess whether Company B's chosen FTSE benchmark was logically connected to the established complaint (failure to assess and mismanagement).
Individual F v Company O [1940] AC 152	Classic authority on causation in contributory negligence analysis.	Used to frame the causation requirement in apportioning responsibility between claimant and defendant for contributory negligence.
Individual G v Company P [1953] AC 663	Support for taking a broad, common sense approach to causation and apportionment in contributory negligence.	Supported the court's application of common sense causation to conclude the Client's misrepresentations were an operative cause of loss.
The Volute [1922] 1 AC 129	Illustration that where both parties' faults are causative of loss, apportionment is appropriate.	Analogous example used to demonstrate that both Company A's and the Client's failings could be causative and justify apportionment.
R (Individual H) v Authority Q [2020] EWCA Civ 1179	Guidance on section 31(2A) Senior Courts Act 1981: the court must refuse relief where it is highly likely the outcome would not be substantially different if the error had not occurred.	Cited in assessing the Respondent's Notice argument that any legal error on contributory negligence would not have changed the outcome; the court applied the high threshold and rejected the Respondent's Notice on the facts.
R (Individual I) v Authority R [2025] EWCA Civ 489	Further guidance that section 31(2A) sets a high test and the court should avoid excessive focus on merits when applying it.	Referred to in explaining limits of applying section 31(2A) and to justify caution about accepting post‑hoc statements that the outcome would have been unchanged.

Court's Reasoning and Analysis

The panel's analysis proceeded in structured steps aligned to the three grounds of appeal but grounded in the legal framework governing the Ombudsman's remit (section 228 FSMA and DISP guidance) and the powers to award compensation (section 229 FSMA).

Legal framework and scope of the Ombudsman's role

• The court reiterated that the Ombudsman must decide what is fair and reasonable in the circumstances and may depart from common law so long as the reasoning is clear and accounts for any differences from legal norms (citing DISP and prior authorities).
• Decisions of the Ombudsman are amenable to judicial review on conventional grounds (error of law, misinterpretation of rules, irrationality/perversity).

Ground 1: adequacy of assessment under COBS 3.5.3R (categorisation)

• The court accepted Company A's submission that client representations are a natural starting point for assessment, but concluded that the specific factual matrix here meant Company A was put on inquiry and could not simply rely on tick-box answers.
• Key factual considerations that, in the court's view, required further enquiry were: the account form itself requested supporting evidence; the Client's free‑text explanation said only "invested in blue chip stocks" and said nothing about CFDs; the Client did not attach evidence; the Client gave inconsistent or contradictory information across forms (including the SAXO form); and the nature of the Pembroke strategy (derivative/leveraged CFD trading) is materially different from conventional equity investment.
• The court analysed relevant legal principles (contractual binding effect of signature; estoppel by representation) and explained why contractual binding principles (e.g. L'Estrange) were of limited assistance on a regulatory compliance question. The estoppel principles required clear representation and reasonable reliance, which can fail where there are reasons to doubt accuracy.
• Applying those principles and the objective words "reasonable assurance" in COBS 3.5.3R, the court concluded Company B was entitled to find Company A did not carry out an adequate assessment and so wrongly categorised the Client. The Decision on Ground 1 was dismissed (i.e., the court upheld Company B's finding). The court also found Company A's documentation did not supply the detail needed to satisfy the quantitative test because it omitted market and lot‑size details.

Ground 2: choice of FTSE benchmark for quantum

• The court explained that Company B's power to award compensation must be logically connected to the established complaint (i.e., the regulatory failings and mismanagement); it was not irrational for Company B to choose a benchmark reflecting a lower risk/medium risk investor profile because Company A had failed to establish that the Client could, or should, have understood and accepted the higher risks of the Pembroke strategy.
• Given Company A did not carry out adequate assessment, the court reasoned it would be illogical to base compensation on an assumption that the Client would have been permitted elsewhere to invest in a high‑risk professional strategy. The court therefore held Company B's selection of the FTSE UK Private Investors Income total return index was not irrational and dismissed Ground 2.

Ground 3: contributory negligence and causation

• The court undertook a detailed analysis of contributory negligence law, emphasising causation as the central requirement for apportionment under the Law Reform (Contributory Negligence) Act 1945 and applying classic authorities to frame that analysis.
• Company B initially proposed a 25% reduction in a first provisional decision but later reversed that view, concluding the Client's incorrect account answers were not causative of the loss because Company A's other failings (misleading information about risk and costs and mismanagement) would have prevented the Client from investing in any event.
• The appellate court rejected that causation analysis. It found that the Client's misrepresentations were an operative cause of the loss because, but for those misrepresentations, the Client would not have been accepted as an elective professional client and therefore would not have participated in the Pembroke strategy at Company A. The sequence of faults does not negate causation: both parties' faults can be causative and justify apportionment.
• The court concluded Company B proceeded on an inaccurate approach to contributory negligence and failed to take the statutory law into account accurately as required by DISP 3.6.4R and the authorities about explaining departures from law. Because Company B's Decision on quantum depended on that flawed approach to causation, the court could not be confident the outcome would have been the same absent the error, and thus the Respondent's Notice relying on section 31(2A) Senior Courts Act 1981 was rejected.
• Accordingly, the court allowed the appeal on Ground 3 and quashed the Decision insofar as it related to the quantum of the award; it remitted the matter to Company B to determine an appropriate reduction to reflect the Client's relative fault, permitting Company B to require further submissions if necessary.

Holding and Implications

Holding:

The appellate court made the following dispositive rulings:

• The court UPHELD Company B's Decision that Company A failed to carry out an adequate assessment under COBS 3.5.3R and was therefore not justified in treating the Client as an elective professional client (Ground 1 dismissed by the appellant).
• The court UPHELD Company B's selection of the FTSE UK Private Investors Income total return index as a reasonable benchmark for compensation (Ground 2 dismissed by the appellant).
• The court ALLOWED the appeal on contributory negligence (Ground 3). It quashed the Decision insofar as quantum was concerned and remitted to Company B to determine whether, and to what extent, the Client's award should be reduced to reflect his contributory fault in misrepresenting trading experience and employment history.

Implications:

• Direct effect on parties: Company A remains liable on the liability aspects upheld by Company B (misclassification, misleading information, mismanagement). However, the quantum of compensation must now be reconsidered by Company B to take account properly of any contributory fault by the Client. The appellate court did not substitute a figure; it remitted the quantification decision back to Company B.
• On legal principle: the judgment confirms that firms cannot treat client tick‑box answers and signed account forms as conclusive in regulatory classification where there are inconsistencies, omissions, or where the paperwork itself requires supporting evidence. Firms are put on inquiry where such features appear, particularly when dealing with materially different and higher‑risk products (such as leveraged CFDs).
• On Ombudsman practice: while the Ombudsman enjoys a broad, equity‑like remit to decide what is fair and reasonable, the Ombudsman must apply legal principles (including contributory negligence) accurately or explain departures; reasoning must be sufficiently clear for review.
• No new binding precedent was established beyond application of existing principles to the facts; the court remitted the question of apportionment to the Ombudsman rather than substituting its own apportionment.

Disposition Summary: The appeal was dismissed in respect of Grounds 1 and 2 (Company B's findings on misclassification and the benchmark were upheld). The appeal was allowed in part as to Ground 3 (contributory negligence), the Decision was quashed insofar as quantum is concerned, and the matter was remitted to Company B to determine any fair and reasonable reduction for the Client's contributory fault.

Note: This summary is strictly confined to and derived from the content of the provided opinion. All personal names and identifiable parties have been replaced with consistent anonymized placeholders.