Post-judgment substitution and execution after loan transfer: balance-of-probabilities proof of absolute assignment and s.28(6) notice

Case: Start Mortgages Designated Activity Company v Clarke and Anor (Approved) [2026] IEHC 308
Court: High Court of Ireland (Dunne J.)
Date: 18 May 2026

1. Introduction

This decision concerns the procedural and evidential requirements for (i) substituting an assignee of a mortgage loan as plaintiff after an order for possession has already been obtained, and (ii) granting the assignee leave to issue execution on that possession order. The appeal was brought by the second defendant (the appellant), a litigant in person, from a Circuit Court order that substituted Mars Capital Finance Ireland DAC as plaintiff in place of Start Mortgages DAC and granted leave to execute the existing possession order.

The underlying possession order had been granted by the Circuit Court in November 2023, affirmed on appeal by the High Court ([2024] IEHC 310), and a further application for leave to appeal was refused by the Supreme Court ([2024] IESCDET 112). The remaining dispute in [2026] IEHC 308 was narrow: whether Mars Capital had proved, to the requisite standard, that it acquired (a) the defendants’ underlying debt/loan (not merely the charge), (b) the associated “chose in action” (including the proceedings and order for possession), and (c) the right to execute.

2. Summary of the Judgment

Dunne J. dismissed the appeal and affirmed the Circuit Court’s approach, making:

  • an order under Order 22 rule 4 of the Circuit Court Rules substituting Mars Capital as plaintiff; and
  • an order under Order 36 rule 10 granting Mars Capital leave to issue execution on the possession order.

The Court held that Mars Capital had established on the balance of probabilities that there was a valid transfer of the defendants’ loan and the relevant chose in action, and that the defendants had received sufficient written notice for the purposes of section 28(6) of the Supreme Court of Judicature Act (Ireland) 1877. The Court rejected challenges based on standing, “means of knowledge”, stamp duty inadmissibility, redactions/transparency, fair procedures, and purported “expert” accounting evidence.

3. Analysis

3.1 Precedents cited (and how they shaped the outcome)

(a) Substitution after transfer: scope of “event” and “change of interest”

The Court relied on Stapleford Finance Ltd. v. Lavelle [2016] IECA 104 to confirm that procedural substitution provisions cover loan-book sales and assignments:

  • “any other event” includes contractual assignment/sale of loans (not only external events like death/bankruptcy); and
  • “change … of interest” includes assignment of a chose in action, not merely interests in land.

These principles supported treating the transfer from Start Mortgages to Mars Capital as an “event” giving rise to a transmissible interest capable of substitution under Order 22 rule 4.

(b) Applicability to possession proceedings

The Court cited Permanent TSB v. Doheny [2019] IEHC 414, where Meenan J. accepted that a transferee could be made a party to possession proceedings commenced by the transferor. Although Doheny concerned substitution in the context of ongoing possession litigation, it underpinned the availability of the mechanism in land recovery proceedings generally.

(c) Leave to execute after assignment

On execution, Dunne J. drew on Irish Nationwide Building Society v. Heagney [2022] IEHC 12, which interpreted the Superior Court analogue (Order 42 rule 24 RSC) as requiring an assignee within six years to prove the change in entitlement, and beyond six years also to explain delay. The present case concerned entitlement rather than delay, but Heagney reinforced the proposition that an assignee’s application is approached essentially as if made by the original judgment creditor, once the change is satisfactorily proved.

(d) The crucial standard of proof post-judgment

A central feature of the judgment is the standard of proof. Dunne J. applied McDermott v Ennis Property Finance DAC [2019] IECA 142, where the Court of Appeal distinguished between:

  • pre-judgment substitution applications (often addressed on a prima facie basis because the merits can be tested at trial), and
  • post-judgment substitution applications (where there is no later trial opportunity to test assignment validity), requiring proof on the balance of probabilities.

Because the possession order was final and the only issue left was entitlement to enforce/execute, Dunne J. held the court must be satisfied on the balance of probabilities that (i) a valid transfer occurred and (ii) valid notice under s.28(6) was given.

(e) s.28(6) assignment notice: purpose and content

The Court set out s.28(6) of the 1877 Act and adopted the explanation in Promontoria (Oyster) DAC v McCool & Everyday Finance DAC [2025] IEHC 9 (Simons J.) of the practical effect of statutory notice: after effective notice, the assignee can sue in its own name and the debtor can safely discharge the debt by paying the assignee.

As to the form/content of notice, the Court relied on AIB Mortgage Bank v Thompson [2018] 3 IR 172, where Baker J. held that notice must be express, in writing, identify the assignee, and provide enough information so the debtor can pay “without acting at his peril”; it need not be formal or contained in a single document. This framed Dunne J.’s conclusion that the “goodbye” and “hello” letters (from transferor and transferee) constituted sufficient notice.

(f) Redactions and proof of assignment: distinguishing cases where proof failed

The appellant argued that redactions prevented the court from being satisfied as to what was transferred, relying on: Pepper Finance v Moynihan [2024] IEHC 625 and Start Mortgages v Ramseyer [2024] IEHC 329. Dunne J. distinguished those decisions: Simons J. had faced “extensive and unexplained” redactions that prevented safe interpretation of the legal effect of transfer documents, resulting in refusal of possession orders and adjournment to plenary hearing.

Here, the primary Global Deed of Transfer was materially unredacted (other borrowers’ details only), and the redacted Transfer Agreement still contained the operative clause and necessary definitions. Accordingly, the court could safely conclude the defendants’ specific loan was included and transferred absolutely, along with ancillary rights and the chose in action.

(g) Absolute assignment and the “missing deed” problem

The Court also addressed Fannon v O' Brien & Ors [2024] IECA 51, where the Court of Appeal found an “insurmountable barrier” to a bank relying on s.28(6) because it failed to put even a redacted deed of transfer before the court, depriving it of the ability to assess whether the assignment was “absolute”.

Dunne J. held that Fannon did not assist the appellant: unlike that case, Mars Capital produced the Global Deed of Transfer and related contractual documentation sufficient for the court to evaluate the assignment and find it absolute and unconditional.

(h) Responsible use of AI in legal submissions

Dunne J. referred to Guerin v O'Doherty [2026] IECA 48 on parties’ responsibilities when using AI for research or submissions: users must not mislead the court by advancing unfounded propositions/authorities and must disclose AI use to the other party and the court. Although the appellant had not disclosed AI use until pressed, the Court accepted she understood her case and did not attempt to mislead.

3.2 Legal reasoning

(a) Standing to apply as a non-party assignee

The Court rejected the contention that Start Mortgages lacked standing (e.g., due to Central Bank register issues). The motion was by Mars Capital. The wording of Order 22 and Order 36 rule 10 expressly contemplates applications by persons “claiming to be” entitled, including where the applicant is the “only new party”. On that basis, Mars Capital had standing to seek substitution and leave to execute.

(b) “Means of knowledge” and business records

The appellant attacked the grounding affidavit because the deponent was employed by a related entity providing management services. Dunne J. held the affidavit adequately grounded: it relied on personal knowledge and review of books and records compiled in the ordinary course of business, identified as business records within the meaning of the Civil Law and Criminal Law (Miscellaneous Provisions) Act 2020. The Court also considered it significant that the deponent had been involved in the earlier proceedings (including pre-transfer employment), reinforcing practical familiarity with the loan history and litigation.

(c) The transfer instruments: proving the loan and chose in action moved

On the merits, the Court focused on the Global Deed of Transfer as the “primary mechanism”. It contained an operative clause transferring:

  • the legal interest in the security and relevant documents;
  • the loans identified in the schedule (the defendants’ account number was specifically listed); and
  • the associated amounts due, claims, benefits, and ancillary rights.

The Transfer Agreement (though redacted) provided definitions and an operative clause describing an absolute and unconditional sale/transfer/assignment. This, read together with the schedule identifying the defendants’ loan, supported the finding—on the balance of probabilities—that Mars Capital owned both the debt and the enforcement rights.

(d) Stamp duty inadmissibility rejected

The Court rejected reliance on section 127 of the Stamp Duties Consolidation Act 1999. Dunne J. held that, at least since the changes introduced by Part 4 of the Finance Act 2007, agreements of the type before the court were not chargeable to stamp duty, and therefore were admissible without stamping for the purpose advanced.

(e) Redactions, transparency, and fair procedures

The Court held the limited redactions (other borrowers’ details) did not undermine interpretability or fairness. In addition to the transfer documents, Mars Capital produced:

  • the deed of transfer of charge (Form 56) executed by transferor and transferee;
  • folio evidence showing Mars Capital registered as charge-holder; and
  • transfer notification letters from both transferor and transferee (“goodbye”/“hello” letters).

Taken together, this was held to provide the appellant a meaningful opportunity to understand and test the claimed entitlement.

(f) Purported expert accounting evidence

The Court gave no weight to the unfiled affidavit of an accountant offered as “expert” evidence. It was treated as conjecture from an accounting perspective and not credible evidence capable, in law, of displacing the documentary transfer evidence.

(g) Notice under s.28(6)

Applying the AIB Mortgage Bank v Thompson framework, the Court found the defendants were properly notified in writing of the assignment so they could know with reasonable certainty that Mars Capital had taken an assignment from Start Mortgages and could give a good discharge. The Court therefore held the statutory condition for legal effectiveness was satisfied.

3.3 Impact

  • Clarity on post-judgment proof: The judgment reinforces that once a possession order is final, a substitution/execution application by an assignee is not dealt with on a mere prima facie basis; the court must be satisfied on the balance of probabilities that the assignment occurred and that s.28(6) notice was given (per McDermott v Ennis Property Finance DAC).
  • Documentary sufficiency despite limited redactions: The decision draws a practical line: redactions confined to third-party borrower information, where the operative clauses/definitions and the borrower’s own schedule entry remain intelligible, will not necessarily trigger the difficulties seen in Pepper Finance v Moynihan and Start Mortgages v Ramseyer.
  • s.28(6) notice remains central: “Hello/goodbye” letter pairs are treated as capable of satisfying s.28(6) provided they give express, sufficiently certain information (consistent with AIB Mortgage Bank v Thompson).
  • Execution continuity in loan-book transfers: For secondary market purchasers, the case supports the proposition that where the transfer documents cover “ancillary rights” and the cause of action/chose in action, the assignee can step into the shoes of the original plaintiff and execute an existing possession order, subject to proof and notice.
  • AI governance in Irish litigation (practical warning): The High Court’s engagement with Guerin v O'Doherty signals that disclosure and accuracy obligations around AI-assisted submissions are not merely aspirational, even for litigants in person.

4. Complex concepts simplified

  • Chose in action: An intangible legal right enforceable by action (e.g., the right to sue on a debt, and related litigation rights).
  • Absolute assignment (s.28(6)): A complete transfer of the debt/legal chose in action to the assignee (not conditional or partial), allowing the assignee, once notice is given, to sue/enforce in its own name and give a valid discharge.
  • Substitution of parties: A procedural step changing who is named as plaintiff/defendant because the underlying right or liability has moved to someone else.
  • Leave to issue execution: Court permission to take enforcement steps (here, to enforce an existing possession order) where entitlement has changed by assignment.
  • De novo appeal (in this context): The High Court considered the motion afresh rather than merely reviewing for error, while still applying the correct post-judgment standard of proof.

5. Conclusion

Start Mortgages Designated Activity Company v Clarke and Anor (Approved) [2026] IEHC 308 consolidates an important procedural-evidential rule for mortgage enforcement following portfolio transfers: where an assignee seeks substitution and leave to execute an already-made possession order, the court must be satisfied on the balance of probabilities that an absolute assignment occurred and that the debtor received express written notice sufficient for s.28(6) of the 1877 Act. The decision also demonstrates a pragmatic approach to limited redactions (contrasted with cases where redactions obstruct interpretation), and highlights the developing expectation—rooted in Guerin v O'Doherty—that AI-assisted submissions must be accurate and disclosed.