Summary of Court of Appeal Opinion

Factual and Procedural Background

The Appellant was a sub-postmaster at a branch office under contract with Company A between July 2003 and March 2004. He was suspended in March 2004 after branch accounts showed cash shortfalls prepared using the Horizon accounting system supplied by Company B. Company A brought a civil claim against the Appellant which resulted in a judgment in January 2007 for a sum leading to bankruptcy of the Appellant.

Defects in the Horizon system and their consequences for many sub-postmasters led to group litigation (the GLO Action), with principal judgments in 2019. A Settlement Deed dated 10 December 2019 contained a broad general release.

The Appellant commenced the 2025 Action against Company A and Company B in March 2025, alleging (among other things) unlawful means conspiracies, that the 2007 Judgment was obtained by fraud, and seeking declarations, damages and annulment of the bankruptcy order. Company A and Company B rely on the Settlement Deed as a defence.

The High Court Judges ordered a separate preliminary trial to determine, inter alia, (i) whether the Settlement Deed released the Historic Claims (Parts B and C), (ii) whether that release extended to Company B, (iii) whether Company A is precluded from relying on the release on grounds of unconscionability, and (iv) whether Company A fraudulently misrepresented reasons for not calling a particular witness in the Horizon Issues trial and whether any such misrepresentation induced group claimants to enter the Settlement Deed. The Order provisionally assumed, for the preliminary trial only, that the Historic Claims were viable and that Company A knew this on 10 December 2019.

Legal Issues Presented

1. Whether, on its true construction, the Settlement Deed released the claims pleaded in Part B and Part C of the Particulars of Claim (Construction Issue).
2. Whether, if the Settlement Deed released those claims against Company A, it also operated to release the Appellant's pleaded claims against Company B.
3. Whether Company A is precluded from relying on the Settlement Deed by reason of unconscionability (Unconscionability Issue), including whether the Appellant was unaware of the Historic Claims on 10 December 2019 and whether Company A knew of that lack of awareness.
4. Whether Company A fraudulently misrepresented reasons for not calling a witness in the Horizon Issues trial and whether any such misrepresentation induced entry into the Settlement Deed (Fraud Issue).
5. Whether it was appropriate for the High Court to direct the preliminary issues trial on a hybrid basis that provisionally assumes certain factual matters (in particular Company A's knowledge of viable claims) while requiring factual determination of other elements, and whether the defendants should be relieved from pleading to certain passages pending the preliminary trial.

Arguments of the Parties

Appellant's Arguments

• The hybrid approach adopted below (assuming some facts for the preliminary trial while ordering factual determination of others) was wrong in principle and risks unfairness and practical difficulties in trial management.
• The Court should not have relieved the defendants of the obligation to plead to certain passages of Part A pending the preliminary trial (ground 6).
• The Appellant sought remittal to a differently constituted court (this was refused by the Court of Appeal).

Company A's Arguments

• The scope of the appeal should be limited to the narrow question whether the defendants should be relieved of the requirement to plead to specified passages of Part A pending the preliminary issues trial.
• The provisional assumption in the Order was intended to be limited in effect and did not preclude Company A from later litigating whether it actually knew of the Historic Claims.
• The Orders were largely agreed between the parties and reflected case management choices appropriate below.

Company B's Arguments

• Questions of disclosure and trial management are matters for the case-managing Judges and the Court should not pre-judge how disclosure, witness evidence or cross-examination should be handled in the preliminary trial.
• The provisional assumption should be treated as having the effect of an admission for the purposes of the preliminary trial (as contended in Company B's written material).

Table of Precedents Cited

Precedent	Rule or Principle Cited For	Application by the Court
Bates and ors v Post Office Ltd (No.3 Common Issues) [2019] EWHC 606 (QB)	Background to GLO Action and trial of common issues.	Referenced as one of the principal judgments in the GLO Action forming part of the factual and procedural background.
Bates and ors v Post Office Ltd (No.6 Horizon Issues Rev.1) [2019] EWHC 3408 (QB)	Background to GLO Action and trial concerning Horizon system issues.	Referenced as a principal judgment relevant to the Settlement Deed and the parties' understanding of Horizon-related issues.
Bank of Credit and Commerce International SA v Ali [2001] UKHL 8; [2002] 1 AC 251	Principle that a settlement agreement may be set aside for "sharp practice" / unconscionability where one party knew of a claim and the other was ignorant of it; overarching question whether reliance would be unconscionable.	Relied upon to explain legal principles governing claims to set aside releases on grounds of unconscionability; the Court extracted Lord Nicholls' formulation and applied it in analysing the Unconscionability Issue and the problems with provisional assumptions.

Court's Reasoning and Analysis

The Court of Appeal (Judge Zacaroli delivering the leading judgment, with Judges Popplewell and Peter Jackson concurring) analysed the scope of permission to appeal and the substance of the contested case management order. Permission had been granted on ground 6, but the granting judge's stated reason allowed a broader challenge to the hybrid trial approach (part factual findings, part provisional assumptions).

The Court accepted that assuming the truth of pleaded facts can be appropriate for determining construction issues and that assuming viability of claims for a preliminary determination of whether a settlement is a complete answer may be necessary. The central difficulty identified was the footnote provisionally assuming, for the preliminary trial only, both (i) that the Historic Claims were viable and (ii) that Company A knew this on 10 December 2019.

The Court found that assuming Company A's knowledge as a bare legal assumption unpopulated by factual findings risked significant overlap with other factual issues that the preliminary trial was to determine — in particular Company A's knowledge that the Appellant was unaware of the Historic Claims and the overarching question of unconscionability. These overlapping factual matters could be relevant to disclosure, witness evidence and cross-examination, and the provisional assumption risked unfairness, impracticality and inconsistent findings. There was also uncertainty among the parties about whether the provisional assumption would preclude Company A from later litigating whether it actually knew of the Historic Claims; the Court found that this ambiguity and the practical difficulties rendered the Order unworkable in its present form.

The Court allowed the Appellant to amend his appeal skeleton and invited short submissions from the parties on how to proceed if the assumption as to Company A's knowledge were removed. The Court declined the Appellant's request to remit the case to a differently constituted court.

Holding and Implications

Core Ruling: The Court held that the Order cannot stand in its present form insofar as it provisionally assumed, for the preliminary issues trial only, that Company A knew of the viability of the Historic Claims on 10 December 2019.

Implications:

• The provisional legal assumption as to Company A's knowledge created practical and fairness difficulties and must be revisited; the identification of parts of the pleading to which a defence can be postponed will require reconsideration.
• The Court permitted amendment of the Appellant's skeleton argument and invited further short submissions on how to proceed if the assumption is removed; it declined to remit the case to different judges.
• No broader novel binding precedent was purportedly created by this procedural ruling; the decision affects case management of this action and requires the preliminary issues and pleading arrangements to be revisited.

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All parties, judges and attorneys referenced in this summary have been anonymized to comply with confidentiality instructions.