Barrister Profile


Year of Call: 2015

Main Areas of Practice

Administrative Law or Judicial Review
Coroners or Inquests
Criminal Law
Public Inquiries


Since being called to the Bar of Northern Ireland in 2015, Leah has gained advocacy experience across a range of practice areas and at all tiers of court. She has particular experience of civil litigation, public law and criminal defence work.

Leah was previously instructed in the Public Inquiry into the Renewable Heat Incentive and is currently instructed in the non-statutory Independent Neurology Inquiry.

Within the civil sphere Leah has experience in professional negligence, personal injury, breach of contract and industrial disease litigation and is keen to expand her practice in these areas. She has further experience in both individual and corporate insolvency proceedings, acting for both creditors and debtors. Leah has also acted in an advisory capacity in respect of probate and land matters and was recently appointed to the GLSNI Civil ‘C’ Panel.

In addition to her civil work, Leah maintains a criminal defence practice in the Magistrates Court. She was recently engaged by a financial lender to provide advices in respect of potential private prosecutions in cases involving allegations of fraud under both the Theft Act (Northern Ireland) 1969 and the Fraud Act 2006.

Leah’s experience also extends to coronial law and she was recently appointed to the Coroner’s Service Panel of Counsel. She has previously assisted in providing advices on the merits of an application to the Attorney General to re-open a legacy inquest involving allegations of collusion between state security forces and paramilitaries.

In addition to her practice in these areas, Leah has an academic interest in both criminal and civil law and was appointed as a tutor/examiner on the modules ‘Criminal Law’ and ‘Introduction to the Law of Torts’ at Queen’s University Belfast School of Law.

Leah is currently accepting instructions in all practice areas. Her areas of particular interest are: Human Rights, Criminal, Personal Injury, Public Inquiries, Coroners/Inquests, Licensing, Administrative/Judicial Review, Commercial, Employment Law, Company Law, Insolvency, Chancery, Extradition and Immigration.


2020; Doctor of Philosophy (PhD), School of Law, Queen’s University Belfast

2020; Appointed to GLSNI Civil ‘C’ Panel

2020; Appointed to CSNI ‘C’ Panel

2020; Member of the NI Medico-Legal Society

2019; Appointed as Equality Secretary to the Young Bar Association Committee

2018; Called to the Bar of Ireland

2016; Appointed to Attorney-General’s ‘Newly-Qualified’ Panel

2015; Called to the Bar of Northern Ireland

2015; P.G. Dip Professional Legal Studies, Commendation, Institute of Professional Legal Studies

2014; LL.B. Law with Politics, First Class Honours, Queen’s University Belfast


2015; First Place, Bencher’s Advocacy Prize

2013; Mini-Pupillage, Deans Court Chambers, Preston (Criminal)

2013; Mini-Pupillage, 7 Harrington Street Chambers, Liverpool (Criminal)


L. Treanor, ‘Mary Robinson’ Book Chapter in Women’s Legal Landmarks: Celebrating 100 Years of Women and Law in the UK and Ireland (Hart Publishing, 2018).

Defendant’s Costs Orders in Crown Court Cases’ CPD Lecture delivered to local solicitors at the Criminal Law Conference 2016.