Date: Aug 1, 2026

Fraud “Adoption” by an Innocent Co-Defendant: Setting Aside a Judgment Where a Party Rode the Fraudster’s Common Cause

1) Introduction

Estate of Euan McIntyre Lindsay & Anor v Outlook Finance Ltd & Anor [2026] EWCA Civ 1005 concerned the scope of the equitable action to set aside an earlier judgment on the ground that it was procured by fraud.

The claimants (the “Lindsays”) were farmers who had borrowed on security from Outlook Finance Limited (“Outlook”), controlled by its principal. Outlook appointed an LPA receiver (the second defendant, “the receiver”) over an English farm. In 2014, in the “Manchester Action”, a circuit judge dismissed the Lindsays’ claims against Outlook; as a consequence, the parasitic claims against the receiver and the purchaser of the farm were also dismissed, with costs against the Lindsays.

Later Scottish litigation culminated in findings that Outlook’s principal had perpetrated extensive fraud (fabricated documents and falsified records). In 2023, the Lindsays issued fresh English proceedings to set aside the 2014 Manchester judgment for fraud. At first instance in 2025, Kerr J set the 2014 judgment aside against both Outlook and the receiver. The receiver appealed.

Core issue on appeal: can a judgment be set aside for fraud against a party who was not personally dishonest, where the fraud was that of a co-defendant (here, Outlook) but the non-fraudulent party (the receiver) had aligned with and relied on the fraudulent case?

2) Summary of the Judgment

The Court of Appeal (Zacaroli LJ giving the lead judgment; Arnold LJ and Singh LJ concurring) dismissed the appeal on the main point. Although the relevant authorities had not been cited to Kerr J, the Court upheld the result on different reasoning:

The “fraud of a party” requirement generally means that, to set aside a judgment against a defendant, the fraudulent evidence must be that defendant’s (or attributable to that defendant).
However, in appropriate circumstances, the fraud of Party A may be treated as the fraud of Party B—particularly where A and B make “completely intermixed cause”, and B adopts A’s fraudulent evidence to obtain the benefit of the judgment.
On the facts, the receiver’s position in the Manchester Action was parasitic on Outlook’s defence; the receiver adopted Outlook’s case and relied on Outlook’s principal’s evidence; and the receiver benefited (albeit unknowingly) from the fraud that caused the claim against him to be dismissed.

The Court refused permission to appeal on the laches point: the challenge was essentially factual, and the judge’s finding that the delay was explained and not unjustified was not open to attack on appeal.

3) Analysis

A. The new clarification: when an “innocent” co-party can still lose the judgment

The decision’s practical significance lies in its articulation and application of a structured approach to attribution in fraud-based set-aside claims:

Baseline rule: to set aside a judgment for fraud against a particular party, the fraudulent evidence must be that party’s evidence (or treated as such).
Witness fraud is not automatically enough: a mere witness’s perjury does not typically justify setting aside a judgment against a party unless (per the “litigation team” reasoning) the witness is both vital and integrated into the decision-making presentation of the case.
Co-party adoption / “common cause” pathway: where two defendants are “comrades in arms” whose positions are interdependent and “completely intermixed”, and one party’s fraud is deployed to defeat the claimant’s case in a way that necessarily defeats the claim against the other, it can be equitable and principled to treat the fraud as also that of the other party for set-aside purposes.

This is not a general “integrity of the judgment” free-standing power to set aside against anyone served; it is a more orthodox res judicata/fraud exception analysis, anchored in whether the fraud can be treated as the relevant party’s for the purpose of disapplying the estoppel created by the earlier judgment.

B. Precedents cited and how they drove the outcome

1) The modern tripartite test: Royal Bank of Scotland plc v Highland Financial Partners LP and Takhar v. Gracefield Developments Ltd

The parties agreed the governing test summarised by Aikens LJ in Royal Bank of Scotland plc v Highland Financial Partners LP [2013] EWCA Civ 328 at §106, endorsed by the Supreme Court in Takhar v. Gracefield Developments Ltd [2019] UKSC 13; [2020] AC 450:

Deliberate dishonesty relating to relevant evidence/acts/concealment;
Materiality/causation: the fraud was an operative cause of the judgment;
Materiality assessed by impact on the original evidential basis, not speculation about a retrial outcome.

These principles explained why Outlook could not resist set-aside. But they did not, on their own, answer whether the receiver (not dishonest) could also be bound by the set-aside order. That question required older res judicata/fraud authorities addressing the “fraud of a party” requirement.

2) The “fraud of a party” rule: Boswell v Coaks

The Court treated Boswell v Coaks (CA, 5 November 1892, unreported) as establishing that a judgment can be set aside only against those who procured it by fraud; if other defendants were not implicated, that could be “fatal” to the claim against them. This was the anchor for the proposition that the set-aside jurisdiction is not automatically judgment-wide as against every party.

3) Attribution through litigation conduct: Odyssey Re (London Limited) v OIC Run-off Limited

In Odyssey Re (London Limited) v OIC Run-off Limited (CA, 13 March 2000, unreported), the Court endorsed the need for the perjured evidence to be “the evidence of a party”, but developed how a witness’s perjury might be treated as the company’s evidence in certain circumstances—particularly where the witness becomes a committed part of the “team” presenting the case.

Zacaroli LJ distilled from it a second principle: witness fraud is not enough unless the witness is both vital and an integral part of the litigation team. This mattered because the receiver was not being accused of perjury; the question was whether Outlook’s fraud could nonetheless be treated as his for these purposes.

4) The “comrade in arms” route: Cinpres Gas Injection Ltd v Melea Ltd

The decisive step came from Cinpres Gas Injection Ltd v Melea Ltd [2008] EWCA Civ 9, [2008] Bus LR 1157. There, Jacob LJ held that where two parties in the original proceedings made “common, and completely intermixed cause” against the claimant, one party’s perjury could be treated as adopted by the other: the co-party was not a “mere witness” scenario; they were “comrade[s] in arms”, and “the whole judgment is unravelled and should be set aside.”

Applying that reasoning, the Court held the receiver’s defence in the Manchester Action was parasitic upon Outlook’s defence, he adopted Outlook’s case and evidence, and he benefited from the fraud when the claim against him was dismissed solely because the claim against Outlook failed. It was therefore appropriate to treat Outlook’s fraudulent evidence as also the receiver’s, even though he was ignorant of the fraud.

5) Other cited authorities: context and limits

Tinkler v Esken Limited [2023] EWCA Civ 655, [2023] Ch 451: relied upon in argument as an analogy to deceit; the Court accepted the analogy has limited force because the court (not only the opposing party) must be shown to have been deceived and “materiality” applies.
Finzi v Jamaican Redevelopment Foundation Inc [2023] UKPC 29; [2024] 1 WLR 541: cited for the warning against extracting broad propositions divorced from context, and for the proposition that fraud claims may still be abusive where the evidence is not “new” and no good reason exists for not deploying it earlier.
Abouloff v Oppenheimer (1883) 10 QBD 295: used in Odyssey Re as persuasive support for the idea that a party should not profit from wrongdoing, informing fraud exceptions to enforcement/estoppel.
Jonesco v Beard: invoked below for “fraud unravels all” language; on appeal, the Court’s ratio rested more tightly on attribution principles than on a free-standing “infection” concept.
Henderson v Henderson (1843) 3 Hare 100 and Virgin Atlantic Airways Ltd v Zodiac Seats UK Ltd [2013] UKSC 46; [2014] AC 160: addressed in the postscript to distinguish the fraud set-aside action (substantive cause of action per Takhar) from abuse-of-process/cause of action estoppel analyses, and to flag that other procedural/substantive routes may sometimes exist.
Clone Pty Ltd v Players Pty Ltd [2018] HCA 12: cited as comparative discussion of alternative ways to reopen decisions.

C. Legal reasoning: why the receiver could not keep the Manchester judgment

The Court’s reasoning proceeds in tightly linked steps:

Res judicata framework: setting aside for fraud is an exception to finality; the exception is constrained by a “fraud of a party” requirement.
Attribution is the bridge: the real question becomes when fraud by someone else can be treated as fraud “of” the party seeking to rely on the earlier judgment.
Parasitic defence + adoption: the receiver had no separate position on the key issue (whether Outlook was entitled to enforce); he aligned with Outlook, adopted its defence, relied on the fraudulent evidence, and obtained the benefit of the consequent dismissal.
Equitable fairness consistent with authority: treating the fraud as also his prevents an “innocent beneficiary” of a common-cause fraud from using the earlier judgment as a shield, while remaining within the established attribution-based limits.

The Court also disposed of the “inconsistency” argument (receiver set aside; purchaser not) on procedural grounds: the purchaser was not joined to the 2023 action, so no order could be made against it.

D. Laches: why permission to appeal was refused

The Court applied the orthodox equitable test in Lindsey Petroleum v Hurd (1874) LR 5 PC 221 (length of delay and the balance of justice, typically requiring prejudice). The receiver’s appeal failed at the threshold because the judge had found the delay was explained and not unjustified (the claimants’ “sustained and unrelenting” efforts in complex multi-forum litigation). That factual finding was not challengeable on appeal.

In any event, the pleaded prejudice based on the death of Outlook’s principal in 2017 could not readily be attributed to any unjustified delay by the claimants before that date.

4) Impact

Sharper exposure for aligned co-defendants: parties whose defences are parasitic on, and expressly adopt, a co-party’s factual case may find that co-party’s litigation fraud is attributed to them for set-aside purposes—even absent personal dishonesty.
Strategic implications in multi-defendant litigation: defendants with nominally “derivative” positions (receivers, agents, professional appointees, indemnified actors) may need to consider (i) separate representation, (ii) distinct pleaded positions where available, and (iii) careful treatment of reliance on a co-defendant’s evidence.
Doctrinal discipline preserved: the Court did not endorse an unlimited “fraud infects the whole judgment against all parties” theory; it located the result within established “fraud of a party” and attribution principles.
Delay defences remain fact-sensitive: the refusal of permission on laches underscores that appellate courts will rarely disturb first-instance evaluative findings on whether delay is justified in long-running fraud-unravelling disputes.

5) Complex concepts simplified

Action to set aside a judgment for fraud: A substantive equitable cause of action (per Takhar) seeking to “undo” a prior judgment because deliberate dishonesty materially caused it.
Materiality (in this context): Not “could the result have differed?”, but whether the fraud was an operative cause of the earlier court deciding as it did (per Highland).
Res judicata / issue estoppel / cause of action estoppel: Finality doctrines preventing re-litigation. Fraud can provide an exception, but the exception is carefully limited.
“Fraud of a party” rule: The fraud exception generally requires the fraud to be that of the party against whom the earlier judgment is attacked—unless attribution principles justify treating another’s fraud as theirs.
“Litigation team” attribution: A route (from Odyssey Re) for treating a witness’s perjury as the party’s where the witness is vital and integrated into how the case is run.
“Comrade in arms” / common cause adoption: A route (from Cinpres) where co-parties’ positions are interdependent and they make intermixed cause, so that one party’s fraud is treated as adopted by the other for the purposes of setting aside the judgment.
Laches: An equitable time-delay defence (per Lindsey Petroleum), typically requiring unjustified delay and resulting prejudice making relief practically unjust.

6) Conclusion

[2026] EWCA Civ 1005 establishes an important, authority-based clarification in fraud set-aside litigation: while the jurisdiction is constrained by the “fraud of a party” requirement, a non-fraudulent co-defendant may still lose the benefit of an earlier judgment where their defence was parasitic on a fraudulent co-party’s case and they adopted that case as a common cause, thereby benefiting from the fraud. The decision both strengthens the court’s ability to prevent fraud-driven finality and preserves doctrinal limits by rooting the outcome in attribution rather than a free-standing, judgment-wide “infection” principle.