Certification of Appeal on Duty of Candour and Presumption of Validity in EU EIA “Sufficient Expertise” Challenges

1) Introduction

Rogers v An Coimisiun Pleanala and Anor (Approved) [2026] IEHC 437 is a High Court decision (Nolan J) concerning an application for a certificate for leave to appeal under s.50A(7) of the Planning and Development Act 2000 (as adapted for appeals to the Court of Appeal by s.75 of the Court of Appeal Act 2014).

The underlying proceedings were a judicial review of the decision of An Coimisiún Pleanála (“the Commission”) dated 27 June 2025 granting approval to Meath County Council (“the Council”) for the N2 Slane Bypass and Public Realm Enhancement Scheme under s.51 of the Roads Act 1993.

The core challenge in the judicial review (dismissed by Nolan J on 28 April 2026) concerned compliance with Article 5(3)(b) of Directive 2011/92/EU (EIA Directive), as implemented by s.51(2A) of the Roads Act 1993: the obligation that the competent authority must ensure it has, or has access as necessary to, sufficient expertise to examine the Environmental Impact Assessment Report (“EIAR”).

The certification application focused on whether Irish public law doctrines—especially the duty of candour, the presumption of validity, and the allocation of evidential burdens—operate differently where the pleaded issue is compliance with that EU-law “autonomous obligation”, and where the relevant information is said to lie uniquely within the respondent’s knowledge.

2) Summary of the Judgment

Nolan J granted a certificate for leave to appeal on two questions, holding that they raise a point of law of exceptional public importance and that it is desirable in the public interest that an appeal be taken.

The Court certified:

1. Duty of candour / adverse inference (merged): whether a public body, as respondent in judicial review proceedings, owes a duty of candour concerning compliance with an autonomous EU law obligation to disclose the expertise it has or has access to, where that point is properly pleaded and/or the information was requested in the proceedings.
2. Presumption of validity / jurisdictional requirement: whether the presumption of validity applies where the issue in dispute is a jurisdictional requirement imposed by Article 5(3)(b) of Directive 2011/92/EU, as amended.

Nolan J refused to certify a third proposed question (whether a court with “judicial doubt” as to compliance with an EU jurisdictional condition can allow the decision to stand), considering that courts commonly have some doubt and the question was not suitable for certification in that form.

3) Analysis

3.1 Precedents Cited

• Rural Residents Wind Aware & Environmental Group & Ors -v- ACP [2026] IEHC 301: Humphreys J’s synthesis of the certification criteria was adopted as a recent statement of the governing approach—particularly that the point must properly arise, be one of law, be of exceptional public importance, and that an appeal be desirable in the public interest.
• Concerned Residents of Treascon and Clondoolusk v An Bord Pleanála & Ors [2024] IESC 28: cited for the requirement that the point properly arise from the decision. This frames certification as tightly linked to what the High Court actually decided (or had to confront), not an abstract advisory exercise.
• Leech v An Bord Pleanála (also referred to herein as "ABP") [2025] IEHC 157: cited for the requirement that the proposed question be a point of law, not a dispute about facts or case-specific evaluation.
• Patrick McCaffrey & Sons Ltd v ABP [2024] IESCDET 145: used to emphasise “public importance” as a distinct requirement (separate from being merely important to the parties).
• Dunnes Stores v ABP [2015] IEHC 387: invoked for the “public interest” limb—appeals are not certified merely because an arguable point exists; there must be a broader desirability.
• Monkstown Road Residents Association v An Bord Pleanála [2023] IEHC 9: relied on in multiple ways: (i) the criteria are cumulative; (ii) the certification court should not assess the strength of the arguments; and (iii) determinativeness can support certification where the point could affect the outcome.
• Cork Harbour Alliance for a Safe Environment v An Bord Pleanála [2022] IEHC 231: (via Barniville J as quoted in Monkstown) supplied the policy “starting point”: s.50A(7) intends that High Court planning JR decisions should usually be final—certification is exceptional.
• Friends of the Irish Environment CLG v. The Government of Ireland & others [2021] IECA 317: central to the Court’s recognition that the parameters of the duty of candour remain unsettled. Nolan J treated Costello J’s statement as representing the “present state of Irish law”: disclosure of all material relevant to the impugned decision, but not a general disclosure obligation and not overriding privilege.
• Murtagh v. Judge Kilrane [2017] IEHC 384: pivotal because Barrett J articulated broader candour principles than the narrower “material relevant to the decision” approach. Nolan J’s earlier judgment observed that if those additional principles formed part of Irish law, the case could look very different, potentially shifting the onus where a respondent remains silent about information peculiarly within its knowledge. The certification decision treats the unresolved status of those principles as a key reason why an appeal is warranted.
• Elsharkawy v The Minister for Transport [2024] IEAC 258: cited alongside Friends of the Irish Environment CLG and Murtagh for the proposition that candour’s parameters are not yet fully settled, strengthening the “exceptional public importance” characterisation.
• Arklow Holidays v An Bord Pleanala & others [2006] IEHC 15: invoked for the countervailing public interest in major infrastructure proceeding with certainty and finality. Nolan J acknowledged this interest but balanced it against potential irreversibility of environmental effects if EU law compliance were deficient.

3.2 Legal Reasoning

(a) The statutory gatekeeping function under s.50A(7)

Nolan J approached the application through the established s.50A(7) lens: certification is exceptional because the Oireachtas intended finality in most planning/roads judicial reviews. The judge emphasised that the High Court’s role at certification stage is not to evaluate the merits or prospects of success, but to determine whether:

• the point arises from the judgment,
• it is a point of law,
• it is of exceptional public importance, and
• an appeal is desirable in the public interest.

(b) “Autonomous” EU obligations and the informational asymmetry problem

The judgment’s reasoning is anchored in the characterisation of Article 5(3)(b) as imposing an autonomous obligation on the Commission: a duty derived directly from the Directive and not contingent on a procedural objection having been raised during the administrative process. The certification decision identifies a practical litigation problem that flows from this: where compliance depends on facts about internal/external expertise arrangements, that information may be peculiarly within the respondent’s possession.

Nolan J framed the certified issues as arising from the interaction of: (i) the presumption of validity of administrative decisions, (ii) evidential burdens in judicial review, (iii) the duty of candour in public law proceedings, and (iv) EU law’s requirement of effective judicial protection in environmental matters.

(c) Duty of candour as a potentially case-determinative lever

The certification judgment turns on Nolan J’s earlier observation (from the substantive JR judgment) that if the wider Murtagh principles were part of Irish law, the Commission’s failure to respond to late-stage correspondence about expertise “could” potentially shift the onus and become determinative. Nolan J did not decide that such an extension exists; rather, he treated the unsettled status of candour—and its potential to reconfigure burdens where an EU jurisdictional condition is pleaded— as precisely what makes the proposed appeal exceptionally important and of public interest.

(d) Presumption of validity where the pleaded issue is a jurisdictional condition

The second certified question isolates whether the presumption of validity applies in the same way when the challenge targets a jurisdictional requirement under EU law (here, “sufficient expertise” under Article 5(3)(b)). The respondents argued the answer is straightforwardly “yes” and that the applicant was attempting to repackage evidential shortcomings as a legal issue. Nolan J nonetheless certified the question, reasoning that it is for the Court of Appeal to address the point in the context of the judgment’s reliance on presumptions and burdens rather than a finding on expertise.

(e) Public interest balancing: infrastructure finality vs potentially irreversible environmental consequences

Nolan J accepted the strong policy interest in finality and avoiding delay in major infrastructure (including public safety benefits of the bypass), but emphasised that once the project proceeds, effects in an area of particular heritage importance may be irreversible. This balancing—combined with the Court of Appeal’s capacity to manage appeals efficiently—supported the conclusion that an appeal is desirable in the public interest.

3.3 Impact

• Appellate clarification of candour in Irish judicial review: By certifying the candour question, the High Court has signposted that the law may need to develop beyond the narrower “material relevant to the impugned decision” formulation, at least where EU-law compliance turns on information uniquely held by the respondent public body.
• Practical consequences for EIA litigation strategy: If the duty of candour is expanded (or adverse inferences are endorsed) in “sufficient expertise” disputes, respondents may face pressure to proactively provide evidence of internal competency and/or external expert access arrangements, rather than rely on presumptions and the applicant’s burden.
• Recalibration of presumptions and burdens where “jurisdictional facts” are EU-derived: The second certified question could influence how Irish courts treat the presumption of validity when the alleged defect concerns an EU-law condition of lawful decision-making. A Court of Appeal ruling may clarify whether such jurisdictional compliance must be affirmatively demonstrated by the decision-maker in certain circumstances, or whether the ordinary presumption-and-proof architecture remains dominant.
• Broader reach beyond planning/roads: While arising in a planning/roads/EIA context, the candour and inference issues are capable of affecting a wide range of judicial review proceedings where key compliance information is held by the State or a regulator.

4) Complex Concepts Simplified

• Certificate for leave to appeal (s.50A(7)): a special filter in planning (and related) judicial review cases. Appeals are not automatic; the High Court must certify that the case raises a point of law of exceptional public importance and that an appeal is desirable in the public interest.
• Autonomous EU law obligation: an obligation that exists because EU law says so—independent of whether someone flagged it during the administrative process. In this case, the Commission must ensure it has (or can access) enough expertise to examine the EIAR.
• Duty of candour: a public law duty requiring a respondent public body to assist the court by disclosing relevant materials. Irish law recognises a duty, but the outer boundaries—how proactive it must be, and whether silence can shift burdens—remain contested.
• Presumption of validity: the starting assumption that an administrative decision is lawful unless the challenger shows otherwise. The certified question asks how that presumption operates where the alleged flaw is failure to meet an EU-law jurisdictional condition.
• Jurisdictional requirement / jurisdictional fact: a condition that must exist for a public body to lawfully make a decision. If absent, the decision may be invalid regardless of other considerations.
• Adverse inference: a conclusion a court may draw against a party that withholds information uniquely within its control—potentially relevant if candour is strengthened.

5) Conclusion

Rogers v An Coimisiun Pleanala and Anor (Approved) [2026] IEHC 437 is significant not because it finally determines the legality of the Slane Bypass approval, but because it authoritatively identifies (and certifies) two appellate questions at the cutting edge of Irish public law in EU environmental cases: (1) whether—and how far—the duty of candour (and related adverse inferences) requires a public body to disclose information about compliance with an EU “autonomous obligation” where the information lies uniquely within its knowledge; and (2) how the presumption of validity operates when the pleaded defect is an EU-law jurisdictional requirement under Article 5(3)(b) of the EIA Directive.

The decision underscores that unresolved doctrinal tensions—candour, burdens of proof, presumptions of validity, and EU effective judicial protection—can meet the “exceptional public importance” threshold, even where the underlying judicial review was decided by applying established principles and without a definitive factual finding on EU compliance.