| R v. Lancashire County Council, ex parte Huddleston [1986] 2 All ER 941 |
Duty of candour in public law litigation: authorities should not respond with blanket assertions; "all the cards face upwards". |
Recognised as establishing the duty of candour; court accepted principle but observed most material often lies with the authority and that statutory framework here differs from Huddleston's context. |
| Reid v. An Bord Pleanála [2021] IEHC 362 |
Cited in the line of authorities giving rise to the Applicants' novel application for directions. |
Referenced as part of the authorities in the lineage of the Applicants' case; court noted no clear judicial template requiring the affidavits sought. |
| Elsharkawy v. The Minister for Transport [2024] IECA 258, [2025] 1 I.L.R.M. 162 |
Duty of candour; modern transparency (FOI, data access) and disclosure obligations of public authorities in judicial review. |
Used to confirm the continuing importance of candour but to show that breach findings are rare and that candour does not automatically require the affidavits sought here. |
| Connelly v. An Bord Pleanála [2018] IESC 31, [2021] 2 I.R. 752, [2018] 2 I.L.R.M. 453 |
Decision must be considered by reference to materials before the decision-maker; interpret decision with the file. |
Accepted as the correct approach to interpreting Company A's decision; Company A relied on this principle and the court accepted that the decision is to be read with the material before it. |
| O'Neill v. Governor of Castlerea Prison [2004] WJSC-SC 9109, [2004] 1 I.R. 298, [2004] 2 I.L.R.M. 241 |
Respondent should disclose all materials in its possession relevant to the impugned decision; criticism where respondent left applicants to FOI requests rather than filing affidavit. |
Cited as authority supporting disclosure obligations; court noted relevance but did not hold it required the Commissioners' affidavits in this case. |
| RAS Medical Ltd v Royal College of Surgeons in Ireland [2019] IESC 4 |
Huddleston relied on as support for transparency in public law litigation. |
Referenced to support the transparency principle; used in the court's analysis of candour obligations. |
| Student Transport Scheme Limited v. The Minister for Education and Skills [2021] IESC 35 |
Principle of transparency in public law litigation. |
Referred to in support of the duty of candour theme; court considered it in the context of pleading and disclosure obligations. |
| T.G. v. Refugee Appeals Tribunal [2007] IEHC 377 |
Where a matter is of sufficient significance, absence of reference may rebut presumption that it was considered. |
Applied to explain that some matters require express reference; used to assess whether absence of reference here might rebut the presumption of validity. |
| Wild Ireland Defence v. An Coimisiún Pleanála & Ors [2025] IEHC 726 |
Illustration of applicants failing to discharge onus where relevant matters were peculiarly within the Commission's knowledge. |
Cited as an instance where applicants failed to present sufficient evidence; court treated it as relevant context for burden allocation. |
| Rogers v. An Coimisiún Pleanála [2026] IEHC 257 |
Example of applicant failing to discharge onus (cited by Applicants). |
Referenced among authorities illustrating the difficulty applicants face in displacing presumption of validity. |
| Maryland Residents Association v. An Coimisiún Pleanála 2024/1021 JR |
Example where Commissioners were directed to file affidavits (as pleaded by Applicants, though no written judgment produced). |
Cited by Applicants as support but court observed no written judgment exists setting out the affidavit type or circumstances. |
| Concerned Residents of Treascon and Clondoolusk v An Bord Pleanála [2024] IESC 28 |
Clarifies scope of leave to apply for judicial review (not an open investigation). |
Applied to stress that proceedings must be conducted within established judicial review principles. |
| Sherwin v. An Bord Pleanála [2023] IEHC 26 |
Confirms onus remains on applicant in judicial review (subject to limited exceptions). |
Used to support the court's statement that the burden of proof remains on Applicants. |
| Amariei v. Chief Appeals Officer [2026] IESC 22 |
Affirms the applicant's onus in judicial review. |
Relied on in setting out the applicable burden of proof. |
| Rutledge v. Fingal County Council [2026] IEHC 223 |
Affirms presumption of validity and burden placement. |
Referenced in the court's exposition of the presumption of validity. |
| Ballyboden Tidy Towns Group v. An Bord Pleanála [2024] IESC 4 |
Explains operation of presumption of validity and the Board's right to defend the decision. |
Quoted to show the presumption identifies who bears the burden; court relied on this to refuse to displace presumption here. |
| In re Comhaltas Ceoltóirí Éireann (unreported, High Court, 14 December 1977) |
Authority cited for presumption that decision is valid unless contrary shown. |
Used as part of the court's statement on the presumption of validity. |
| Campus Oil v. Minister for Industry and Energy (No. 2) [1983] I.R. 88, [1984] I.L.R.M. 47 |
Principle that presumption of validity attaches to administrative decisions. |
Cited in support of the presumption principle applied by the court. |
| Grassridge v. Dun Laoghaire Rathdown County Council [2024] IEHC 669 |
Referred to for presumption of validity. |
Referenced in the court's presentation of authorities confirming presumption. |
| Moran v. An Bord Pleanála [2025] IEHC 510 |
Reference for presumption of validity. |
Cited as part of the line of authorities upholding the presumption. |
| Coyne v. An Bord Pleanála [2023] IEHC 412 |
Burden of proof on applicant; practical difficulties of proving negatives about decision-maker's mind without illuminatory content. |
Quoted to acknowledge applicants' evidential difficulties and to explain burden remains on them. |
| Four Districts Woodland Habitat Group & Ors v. An Bord Pleanála & Ors [2023] IEHC 335 |
Having regard to something does not necessarily require reasons for not accepting it; main issues may require main reasons. |
Used to explain that "having regard" does not always impose a duty to give reasons unless main issues are concerned. |
| Cork County Council v. Minister for Housing, Local Government and Heritage & Ors [2021] IEHC 683 |
Defines "having regard" / "considering" and when failure to look at matters can give rise to certiorari; concept of an "enhanced duty" to give reasons in context. |
Applied to explain when specific reasons may be required and to contextualise the obligation to give main reasons on main issues. |
| Morehart v. An Bord Pleanála [2025] IEHC 418 |
Absence of express reference to a document not always sufficient to show it was not considered; significance of document matters. |
Relied on to reinforce that the decision speaks for itself and that inference depends on materiality. |
| Banzuzi v. Minister for Justice [2007] IEHC 2 |
No obligation to refer to every document or aspect of evidence in a decision. |
Cited in support of the proposition that not every document must be mentioned in the decision. |
| A.W.S. v. Refugee Appeals Tribunal [2008] IEHC 276 |
Endorses limited obligation to refer to all evidence or documents. |
Referenced alongside other authorities on express reference obligations. |
| State (Crowley) v. The Irish Land Commission [1951] IR 250 |
Judgment and orders must speak for themselves; affidavit cannot be used to add to or explain orders. |
Cited for the principle that ex post facto affidavits cannot be used to supplement or contradict a decision's written orders. |
| Tumblr Incorporated v. Coimisiún Na Meán [2024] IEHC 366 |
Decision must stand or fall on its own terms; subsequent elaboration is not permissible in the ordinary course. |
Applied to support the general rule against ex post facto elaboration of reasons. |
| Jacksonway Properties v The Information Commissioner [2020] IEHC 73 |
Referenced in relation to decisions standing on their terms and limitations on later elaboration. |
Used to reinforce the principle cited in Tumblr Incorporated. |
| Utmost Paneurope DAC v Financial Services and Pensions Ombudsman [2020] IEHC 538 |
Referenced with similar effect regarding decisions speaking for themselves. |
Relied upon in the court's summary of the rule against post hoc explanation. |
| Friends of Killymooney Lough v. An Coimisiún Pleanála [2025] IEHC 407 |
Illustrates that ex post facto reasoning cannot normally be provided. |
Cited as not assisting the Applicants' request for post hoc affidavits. |
| Carrownagowan Concern Group v. An Bord Pleanála (No.2) [2024] IEHC 300 |
Discusses materiality and when absence of reference matters (paras cited). |
Referenced in support of the court's materiality analysis. |