- Other Memberships:
- Cumann Barra na Gaeilge
Irish Centre for European Law
Irish Society for European Law
Planning, Environmental & Local Government Bar Association
- Other Languages:
- Irish (Fluent)
- Direct Professional Access:
Proinsias practices primarily in the area of administrative law, local government law, planning and development law and rating and valuation law. He acts on behalf of commercial and semi-state companies, local authorities and private individuals, appearing before every level of the Irish Courts and before various tribunals such as An Bord Pleanála and the Valuation Tribunal.
Proinsias has a long-standing interest in European Union law and has acted in planning, data protection, immigration, and extradition cases with significant European Union law elements.
Glann Mór Céibh Teoranta agus eile v. An tAire Tithíochta, Pleanáil agus Rialtas Áitiúil agus eile  IESC 40
Coillte Teoranta v. Commissioner of Valuation  IEHC 588
Breanagh Catering Limited v. Commissioner of Valuation  IEHC 663
Commissioner of Valuation v. Hibernian Wind Power Limited  IEHC 49
Commissioner of Valuation v. Carlton Hotel Dublin Airport Ltd  2 I.R. 385
B(K) v. District Judge Kennedy  IEHC 745
Minister for Justice v. T.E.  IEHC 323
Nowak v. Data Protection Commissioner  IEHC 449
Raducan v. Minister for Justice  1 I.L.R.M. 419
Izmailovic v. Commissioner of An Garda Síochána  2 I.R. 522
Ó Gribín v. An Chomhairle Mhúinteoireachta  3 I.R. 266
Cumann Barra na Gaeilge CPD – presentation on the duty to give reasons
Founder member – Ionad Saor Comhairle Dlí (2005 – present)
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