Summary of Judgment — Hague Convention / Mediation Documents

Factual and Procedural Background

This matter concerns an application by the Applicant for the return of a child, X, to England under the Hague Convention on the Civil Aspects of International Child Abduction, 1980. The Applicant commenced Convention proceedings in Ireland and relied on documents transmitted via Central Authorities, including materials generated during two mediation sessions in England in or about autumn 2025. The mediation was conducted by a professional mediator (Mediator) who is not legally qualified. No concluded mediated agreement was produced to the Court; the Agreement to Mediate signed by both parties described the process as voluntary, confidential and non‑binding. The Applicant sought an order that mediation documents (or parts thereof) be admissible in the Convention proceedings pursuant to section 5 of the Child Abduction and Enforcement of Custody Orders Act 1991, Article 30 of the Hague Convention, and/or the Court's inherent jurisdiction. The Respondent opposed admission on the basis of mediation confidentiality/“without prejudice” privilege. The Court (Judge Jackson) made a publication prohibition order under section 45 Courts (Supplemental Provisions) Act 1961 and heard a discrete motion on the admissibility of the mediation materials. Affidavits were sworn by the Applicant's solicitor (Attorney Brophy) and by the Respondent; the contested relief was refused in a judgment delivered 12 June 2026.

Legal Issues Presented

1. Whether documents generated in a mediation conducted in England are admissible in Irish Hague Convention proceedings when transmitted via Central Authorities, having regard to Article 30 of the Convention and section 5 of the 1991 Act.
2. Whether mediation confidentiality or the common law "without prejudice" rule (or other legal privilege) prevents admission of such mediation materials in the Convention proceedings.
3. Whether Article 30 of the Convention displaces domestic evidentiary rules (including mediation confidentiality and "without prejudice" privilege) so as to render mediation communications admissible notwithstanding those rules.

Arguments of the Parties

Applicant's Arguments

• Article 30's purpose is to expedite Convention proceedings and to facilitate admission of documentary evidence transmitted by Central Authorities; the Guide to Good Practice supports relaxed evidentiary requirements in return cases.
• Section 10 of the Mediation Act 2017 (statutory mediation confidentiality in Ireland) does not apply because the mediation occurred in England.
• Absent statutory privilege, there is no general common law privilege attaching to mediation per se; "without prejudice" protection requires its preconditions to be satisfied and cannot be conjured by label alone. Authorities cited include Greencore v. Murphy [1995] 3 IR 520, O'Connor v. P. Elliott and Co. [2010] IEHC 167, Murphy v. O'Halloran [2016] IEHC 460 and McGrath on Evidence (3rd Ed., 2020).
• The Applicant asserted that portions of the mediation materials (the Addendum) were of particular relevance to facts in issue in the Convention proceedings and sought their admission.

Respondent's Arguments

• Section 10 of the 2017 Act does not apply, but English mediation confidentiality and common law "without prejudice" / mediation privilege protect the documents from disclosure.
• Article 30 cannot be used to circumvent the admissibility rules of the State of habitual residence where the materials are clearly privileged; Article 30 concerns procedural admissibility/authentication, not displacement of substantive evidentiary privileges. The Respondent relied on Re E (A Child) (Mediation Privilege) [2020] EWHC 3379 (Fam).

Table of Precedents Cited

Court's Reasoning and Analysis

The Court analysed three distinct legal strands and reconciled them: (i) the Convention (Articles 8 and 30) and implementing domestic provisions (section 5 and section 6 of the 1991 Act); (ii) statutory mediation confidentiality under the Mediation Act 2017 (section 10); and (iii) common law "without prejudice" and legal professional privilege doctrines.

Key analytical steps (as stated in the judgment):

• Article 30 and section 5/6 of the 1991 Act permit documentary material transmitted via Central Authorities to be admissible in national proceedings, and Article 30 was designed to remove formal barriers to admission (authentication/hearsay) rather than to prescribe evidential weight.
• Section 10 Mediation Act 2017 would protect mediation materials if Irish law applied, but it did not apply here because the mediation occurred in England; the Court therefore examined common law protection.
• The Court applied the established tests for "without prejudice" privilege: communications must be bona fide attempts to settle a dispute and made on the basis they would not be disclosed if negotiations failed. The Agreement to Mediate and affidavit evidence established there was a dispute and that the parties contemplated litigation if mediation failed; thus the without prejudice/mediation privilege attached.
• The Court found there was no admissible basis to treat the documents as necessary to prove a concluded settlement (the Moorview exception did not apply): the affidavits did not support the existence of a concluded agreement and the Respondent expressly averred no agreement was reached.
• The Court rejected the Applicant's submission that Article 30 displaces domestic privileges: Article 30 removes procedural hurdles to admission but does not abrogate substantive evidentiary rules protecting mediation communications. The Court relied on Re E (A Child) [2020] EWHC 3379 (Fam) and other authorities to conclude mediation communications and mediator notes are generally inadmissible absent waiver or an applicable exception.
• Accordingly, the Court concluded the mediation materials remained privileged and inadmissible in the present motion; the Applicant's request for admission of those materials was refused. Separately, the publication/broadcast prohibition (first relief) was granted as uncontroversial.

Holding and Implications

Holding: The Court ordered the publication prohibition under section 45 Courts (Supplemental Provisions) Act 1961 and REFUSED the Applicant's application to admit the mediation documents (or parts thereof) into evidence in the Convention proceedings.

Implications:

• Direct effect: The mediation communications and mediator's notes at issue remain privileged and are not admissible in these Hague Convention proceedings; the Applicant's motion to exhibit those materials is dismissed.
• Article 30/section 5 do not displace substantive domestic evidentiary protections for mediation communications; Article 30 facilitates admissibility in procedural respects but does not abrogate privilege.
• The decision does not purport to create a novel general rule beyond applying established principles; it affirms that mediation confidentiality/"without prejudice" privilege will normally exclude mediation communications in Convention proceedings absent waiver or an established exception (none of which the Court found to apply here).

Any procedural matters arising from this decision may be mentioned to Judge Jackson in advance of the substantive hearing listed in the Convention proceedings.