Kay v Martineau Johnson (a firm) [2026] EWCA Civ 224 — Constructive Knowledge Under s.14A Limitation Act 1980: The Proviso, Independent Advice, and the Limited Role of Impecuniosity
Court: England and Wales Court of Appeal (Civil Division)
Date: 5 March 2026
Judges: Newey LJ, Males LJ, Lewis LJ
1. Introduction
This appeal concerned whether Ms Ellen Kay’s professional negligence claim against her former divorce solicitors,
Martineau Johnson (a firm), was brought in time. The claim arose out of advice given in 2008 leading to a “clean break”
ancillary relief settlement with her former husband, Mr Ajay Mahan. Ms Kay alleged that the firm failed to advise properly
on investigations into Mr Mahan’s means and, in particular, failed to advise about the option of a nominal spousal
maintenance order (an “NSMO”), which could have preserved the possibility of returning to court if circumstances changed.
The central issue was limitation. The ordinary six-year period for tort (Limitation Act 1980, section 2) had long expired.
Ms Kay therefore relied on section 14A of the Limitation Act 1980, which can postpone the start of a three-year limitation
period until the claimant has (or is treated as having) the requisite “knowledge” of key facts, including attribution of the
damage to the alleged negligent act or omission. The case also sat in the shadow of the 15-year “longstop” in section 14B,
introduced by the Latent Damage Act 1986, reflecting a policy balance between fairness to unaware claimants and protection
for defendants from stale claims.
Parties
- Appellant/Claimant: Ms Ellen Kay
- Respondent/Defendant: Martineau Johnson (a firm of solicitors), acting through partner Mrs Mary Kaye
Key limitation questions
- When (if at all) did Ms Kay have actual “knowledge” under section 14A(6)–(8) that her loss was attributable to negligent advice/omission?
- If not, when should she be treated as having constructive knowledge under section 14A(10)?
- How does the proviso in section 14A(10) (“taken all reasonable steps to obtain … expert advice”) operate where the claimant returns to the allegedly negligent solicitors?
- Can “impecuniosity” (lack of funds) excuse delay in seeking expert advice for section 14A(10) purposes?
2. Summary of the Judgment
Outcome: The appeal was dismissed; the negligence claim was statute-barred.
All members of the Court agreed that Ms Kay did not have “actual knowledge” in 2009 within section 14A(6)–(8).
However, the Court divided in its reasoning as to whether she nonetheless had constructive knowledge by mid-2009:
-
Newey LJ: No actual knowledge by end 2009; and Ms Kay could rely on the proviso to section 14A(10) because it was reasonable for her to accept Martineau Johnson’s unqualified advice that the settlement could not be reopened, without seeking independent advice about potential negligence at that stage. Nonetheless, she had constructive knowledge by the end of 2018 and the claim (issued 6 March 2023) was out of time.
-
Males LJ (with Lewis LJ agreeing): No actual knowledge in 2009, but constructive knowledge arose by June 2009 because, once advised that the clean break settlement was final, Ms Kay objectively ought reasonably to have sought expert advice on whether her predicament was due to defective advice by Martineau Johnson. On this approach, she had not taken “all reasonable steps” within the proviso.
-
Alternative basis (all judges): Even if time did not start in 2009, Ms Kay had constructive knowledge by 2018/2019; “impecuniosity” did not (on the evidence) justify the delay in obtaining counsel’s advice until March 2020.
3. Analysis
3.1 Precedents Cited
This was the Court’s primary interpretive anchor for section 14A. The judgment extracted structured guidance:
-
Threshold for “knowledge”: “Rather less than certainty” is enough; the claimant must know enough to justify embarking on preliminary steps (Lord Nicholls, para 9). Vague suspicion is insufficient; reasonable belief will normally suffice.
-
Essence of the case: Knowledge of the “essential thrust” is sufficient (Lord Walker, para 66).
-
Professional advice cases: A claimant may know they acted on advice and suffered loss without yet knowing the loss is attributable to flawed advice/omission (Lord Mance, para 118; Lord Nicholls, paras 19–21). If advice is “apparently sound and reliable”, “something more” is needed to put the claimant on inquiry.
-
Actual vs constructive knowledge: Lord Mance’s taxonomy (para 126) distinguishes (a) actual knowledge, (b) constructive knowledge (what the claimant might reasonably have been expected to acquire), and (c) ignorance.
In Kay, Haward v Fawcetts framed both (i) the Court’s rejection of “actual knowledge” in 2009 and (ii) the debate on whether, objectively,
Ms Kay should have sought further advice such that constructive knowledge would be imputed.
Witcomb v J Keith Park Solicitors [2021] EWHC 2038 (QB), [2021] PNLR 24 and Witcomb v Keith Park Solicitors [2023] EWCA Civ 326, [2023] PNLR 20
Witcomb concerned a claimant who settled a personal injury claim on a full and final basis, later required an amputation, and then sued his solicitors
for failing to advise on provisional damages. The courts held section 14A delayed the start of limitation because he had no reason to suspect flawed advice until later.
-
Bourne J’s propositions (endorsed by Thirlwall LJ) were cited: where negligence is wrong advice, time does not start until the claimant has some reason to consider advice may be wrong; where negligence is an omission, time does not start until the claimant has some reason to consider necessary advice has not been given.
-
In Kay, the Court held Witcomb was not determinative because Ms Kay’s pleaded allegations were broader than the NSMO point, and attribution is fact-sensitive.
-
Males LJ cautioned that asking whether there was “some reason” risks blurring actual and constructive knowledge and preferred to start from the statutory language.
Forbes is a leading authority on constructive knowledge under section 14(3) (personal injury), influential by analogy to section 14A(10).
The Court of Appeal in Forbes held the claimant should have sought advice promptly after a serious adverse outcome, so knowledge was imputed.
In Kay, Forbes was used in two different ways:
-
Newey LJ: emphasised that Stuart-Smith LJ’s reasoning in Forbes concerned constructive, not actual, knowledge—supporting the conclusion that a poor outcome is not automatically actual knowledge of attribution.
-
Males LJ: treated Ms Kay’s position (once told she was “stuck” with the settlement) as “akin to the patient in Forbes … who knows the medical treatment has gone wrong”, reinforcing that she objectively should have investigated possible fault.
Gosden v Halliwell Landau [2020] EWCA Civ 42
Gosden addressed constructive knowledge and, importantly here, the claimant’s act of returning to the same solicitors. Patten LJ held it was reasonable
for claimants to return to the original solicitor as a “first port of call”; the solicitor’s failure to disclose a conflict should not be held against the claimants.
In Kay, Gosden supported Ms Kay’s argument (accepted by Newey LJ) that returning to Martineau Johnson could, in principle, satisfy the “all reasonable steps”
proviso in section 14A(10). Males LJ distinguished the relevance: it was reasonable to seek advice on reopening the settlement, but that did not exhaust what was
objectively required once the settlement’s finality was confirmed.
Adams, a section 14(3) constructive knowledge case, provided the framework for the objectivity of the “reasonableness” test and the limited relevance of personal
characteristics. The Court in Kay relied on Adams to address whether impecuniosity could be relevant and how far “surrounding circumstances” may be considered.
Gravgaard reinforced the objective nature of section 14A(10), while recognising that the test concerns a person “in the position of the claimant” rather than the
claimant’s peculiar characteristics. Newey LJ engaged with Gravgaard when considering whether financial constraints could ever matter.
These were cited not on limitation doctrine but on appellate restraint: the limited circumstances in which an appeal court will interfere with a trial judge’s factual
and evaluative findings. Males LJ, in particular, used Re Sprintroom to justify upholding the judge’s evaluative conclusion on constructive knowledge.
Other citations (contextual)
- Hildebrand v Hildebrand [1992] 1 FLR 244: cited for the “Hildebrand bundle” in family disclosure practice; not a limitation precedent.
- Masterman-Lister v Brutton & Co (Nos 1 and 2) [2003] 1 WLR 1511: referenced in Adams discussion as an example of serious incapacity affecting proceedings.
- Nash v Eli Lilly & Co [1993] 1 WLR 782: referenced in Adams as to whether claimant characteristics are relevant (Lord Hoffmann disagreed with Purchas LJ’s formulation).
3.2 Legal Reasoning
(A) The statutory architecture: section 14A(6)–(9) vs section 14A(10)
A notable feature of this decision is its insistence—particularly by Males LJ—on maintaining the structure of section 14A:
-
Actual knowledge is governed by section 14A(6)–(9): what the claimant in fact knows (with the “low threshold” of sufficient confidence to investigate).
-
Constructive knowledge is governed by section 14A(10): what the claimant might reasonably have been expected to acquire from observable facts or
with reasonable expert advice, subject to the proviso requiring “all reasonable steps” to obtain and act on that advice.
(B) Why “actual knowledge” was rejected for 2009
The Court accepted that Ms Kay knew the “material facts about the damage” early (she considered the settlement a “bad deal” and experienced financial hardship),
satisfying section 14A(6)(a). The decisive issue was section 14A(8)(a): whether she knew her predicament was attributable to negligent advice/omission.
Newey LJ stressed the “something more” requirement from Haward v Fawcetts: it was possible for solicitors to have acted non-negligently and for a settlement still to
feel unfair or to turn out poorly due to later events (property value decline; builder bankruptcy; inability to recover damages). The contemporaneous correspondence also
did not indicate Ms Kay suspected professional fault.
Males LJ sharpened the point: actual knowledge requires the claimant actually to have drawn (at least tentatively) the inference that advice was flawed; it is not enough
that such an inference could later be drawn from known facts. On the evidence, it “did not in fact occur” to Ms Kay in 2009 that her solicitors might be at fault—indeed
she expressed admiration for Mrs Kaye. That was “fatal” to a finding of actual knowledge.
(C) Constructive knowledge in 2009: the key dispute—how the proviso operates
The controversy was the proviso in section 14A(10): a claimant is not fixed with knowledge ascertainable only with expert advice “so long as” they have taken “all
reasonable steps” to obtain (and act on) that advice.
Newey LJ’s approach
Newey LJ held it was reasonable for Ms Kay to return to Martineau Johnson in 2008–2009 to explore reopening the settlement, and that she could reasonably assume that if
there were any concern about their own prior advice, they would have flagged the need for independent advice. They did not; instead they gave unqualified advice that the
settlement could not be reopened. On that basis, she had taken reasonable steps and was protected by the proviso; she was not required to seek a second opinion at that time.
Males LJ (with Lewis LJ) approach (majority on the 2009 constructive-knowledge point)
Males LJ reframed the proviso analysis. It was reasonable to ask the solicitors whether the settlement could be reopened; but once the answer was “no”, the relevant
question became whether Ms Kay objectively ought then to have sought advice on a different issue: whether she was “stuck” because of defective advice given when she
entered the settlement. If she ought reasonably to have sought that further advice, she had not taken “all reasonable steps”, and constructive knowledge was imputed.
Lewis LJ agreed: it was open to the trial judge to find that by about June 2009 Ms Kay knew enough to investigate whether her inability to take further proceedings against
her husband was attributable to her solicitors’ advice, and therefore she had not taken all reasonable steps within the proviso.
Significance
The decision therefore highlights a practical point: returning to the allegedly negligent professional may be a reasonable first step (as in Gosden), but it may not
exhaust “all reasonable steps” if the claimant is (objectively) on notice of a distinct possibility that the professional’s earlier work is itself the cause of the
impasse. Whether that notice exists remains fact-sensitive.
(D) Constructive knowledge by 2018/2019 and impecuniosity
Newey LJ addressed whether impecuniosity could delay the point at which the claimant is treated as having constructive knowledge under section 14A(10).
He concluded:
-
The section 14A(10) inquiry is “mainly objective”, drawing on Adams, Gravgaard, and Gosden.
-
Impecuniosity is “questionable” as a relevant factor at all; if relevant, it would only be in “rare” cases.
-
A claimant relying on impecuniosity must provide detailed evidence of financial circumstances and how they prevented obtaining advice.
-
On the facts, the delay was better explained by lack of urgency/prioritisation and relationship volatility, and Ms Kay had significant financial support from Mr Morgan.
There was no evidence of exploring other avenues (pro bono/CFA) for advice.
Males LJ and Lewis LJ agreed with Newey LJ’s analysis of impecuniosity and evidence. Thus, even on Newey LJ’s view that 2009 constructive knowledge was not established,
Ms Kay was still out of time because constructive knowledge arose by the end of 2018 (more than three years before 6 March 2023).
3.3 Impact
(A) Clarification of “actual knowledge” in professional negligence (solicitors)
The Court underscored that “actual knowledge” under section 14A is not satisfied merely because the claimant knows they made a disadvantageous bargain on professional
advice. There must be some actual consciousness—meeting the Haward v Fawcetts threshold—that flawed advice/omission is a plausible explanation. This resists turning
section 14A into a near-automatic trigger whenever a transaction later appears unfavourable.
(B) The proviso in section 14A(10): returning to the same professional may not be enough
The case is particularly important for how it frames the proviso’s “all reasonable steps” requirement:
-
It may be reasonable initially to go back to the same adviser (Gosden), and sometimes that may suffice (Newey LJ’s approach).
-
But the majority on the 2009 constructive-knowledge question emphasised a step-change: once the claimant is told the primary remedy is unavailable (here, reopening the
settlement), it may become objectively reasonable to seek independent advice as to whether the adviser’s earlier work caused the predicament.
Future negligence defendants are likely to rely on this reasoning to argue that once a claimant is blocked from further progress by “finality” advice, they are on notice
(constructively) to investigate professional fault.
(C) Impecuniosity: high evidential burden; rarely relevant (if at all)
The Court’s approach signals that claimants face a steep climb if they contend that lack of funds prevented them from seeking “appropriate expert advice” within section 14A(10).
Even if impecuniosity can matter in principle, it requires granular evidence and is unlikely to succeed where the claimant had access to litigation support, discretionary spending,
third-party help, or could have explored alternative funding.
(D) Practical consequences in family-law-advice negligence claims
While the underlying alleged negligence concerned family-law strategy (investigation of disclosure; section 37 Matrimonial Causes Act 1973; NSMO; clean break),
the decision’s principal effect is procedural: it tightens the risk that delayed “second looks” at old divorce settlements will be met by section 14A arguments,
especially once a claimant has reason to question finality or fairness and fails to seek timely independent advice.
4. Complex Concepts Simplified
“Clean break”
A financial order ending ongoing financial claims between ex-spouses, so neither can later claim further maintenance/capital (subject to narrow exceptions such as set-aside
for non-disclosure in some circumstances).
Nominal Spousal Maintenance Order (NSMO)
An order setting maintenance at £0 (or a nominal amount), potentially preserving jurisdiction to vary in the future if circumstances change, rather than ending all claims
via a clean break.
Section 14A “knowledge”: actual vs constructive
-
Actual knowledge (section 14A(6)–(9)): what the claimant actually knows about (i) the damage and (ii) that it is attributable to the defendant’s act/omission.
The claimant does not need to know the conduct was legally negligent (section 14A(9)).
-
Constructive knowledge (section 14A(10)): what the claimant is treated as knowing because they might reasonably have been expected to find it out,
including by getting appropriate expert advice reasonably.
The “proviso” to section 14A(10)
Even if knowledge could be discovered by expert advice, a claimant is not treated as knowing it if they have taken “all reasonable steps” to obtain and act on that advice.
The dispute in this case was whether returning to the same solicitors and accepting their “nothing can be done” advice satisfied that requirement.
The “15-year longstop” (section 14B)
A hard backstop: negligence claims cannot be brought more than 15 years after the relevant act/omission, regardless of knowledge. Although the appeal focused on section 14A’s
three-year period from knowledge, the longstop framed the policy context and urgency.
5. Conclusion
Kay v Martineau Johnson (a firm) confirms and refines section 14A’s application to solicitor-negligence claims:
-
A claimant’s awareness of a poor outcome is not, without more, “actual knowledge” that the loss is attributable to flawed advice.
-
Constructive knowledge under section 14A(10) is assessed mainly objectively; the proviso requires “all reasonable steps” and may, depending on the facts, require
independent advice once “finality” becomes clear.
-
Impecuniosity is at best a rare and evidence-heavy basis for resisting constructive knowledge; on these facts, delay was not justified.
The appeal failed because, at the latest, Ms Kay was treated as having the requisite knowledge by the end of 2018 (and, on the majority reasoning on the 2009 point, by June 2009),
rendering the claim issued in March 2023 statute-barred.