David Holden sentenced for killing of Aidan McAnespie

Partner

Gavin Booth

Gavin Booth specialises in Actions against the Police, Public Law and Prison Law. In a short time, he has developed a specialist practice in these areas.  He regularly appears in some of the most high-profile actions against the Police cases, prison law and public law challenges in this jurisdiction. 

Gavin has developed a specialist practice acting in legacy cases for those victims who have been bereaved or injured arising out of incidents during the conflict.  

He is currently involved in some of the most high-profile legacy cases emanating from the period commonly referred to as ‘the troubles,’ including the RUC murder of Colum Marks in April 1991, the murder of Seamus Ludlow in County Louth in 1976, the attack on the Thierafurth Inn Bar in November 1992, and the murders of Dwyane O’Donnell and Thomas Armstrong at Boyle’s Bar in Cappagh in March 1991.

Gavin has appeared in both the Irish Supreme Court and the UK Supreme Court.  In the Irish Supreme Court in YY -v- Minister for Justice, concerning the deportation of an ISIS suspect and in theUK Supreme Court in Re Anthony McIntyre [2019] which challenged the lawfulness of the controversial decision by the police to rely on tapes collected from the Boston College project. Gavin has also secured the largest civil settlement in the Boston College cases in this jurisdiction for the claimants.

Gavin holds an LLM Masters in Human Rights Law and Transitional Justice. Gavin co-authored two reports with Doughty Street Chambers in London. The first report was on the Repeal of the Human Rights Acts in Northern Ireland and the second on the effect of Media Concentration in Ireland. Gavin addressed the European Parliament in Brussels on two occasions.

Outside of work Gavin is also a Director of the Newry Charity Davina’s Ark which specialises in addiction and after care.

Actions against the Police & Public Law

1. Thierafurth Inn – Collusion in County Down (Re John McEvoy)

In 2016 the then Police Ombudsman Dr. Michael Maguire released his report on Loughinsiand. The report was tasked with looking at issues of Collusion between Loyalist paramilitaries and members of the Security forces including the RUC and UDR. The report ultimately concluded that collusion was a significant feature of the murders.  The Report for the first time linked other cases prior to the events at the Heights Bar in Loughinisland including the murder of Jack Kielty in Dundrum, the attempted murder of Peter McCarthy and the attack on the Thierafurth Inn in 1992. Mr John McEvoy challenged the failure of the PSNI to investigate the allegations into his attempted murder at the Thierafurth Inn in 1992 and sought a fresh independent investigation into the not only the events at the Thierafurth Inn, but all the murders associated with this murder gang.

The relevant media footage can be accessed here:  

2. Agent Provocateur Sandy Lynch and others (R -v- Clinton and Armstrong)

In an out of time appeal, Gavin was instructed by the appellants Clinton and Armstrong in successfully overturning the 30-year-old convictions as a result of the fresh evidence that they were entrapped by a state agent (or a covert human intelligence source) acting as an agent provocateur.

 The relevant media footage can be accessed here   

3. Raymond McCreesh Park (Re Rosaleen Murphy)

The applicant a Newry Pensioner and local resident sought to challenge the decision of Newry, Mourne and Down District Council’s decision to dispose of Raymond McCreesh Park through their D1 Disposal Process without consultation with the local community.

The relevant media footage can be accessed here

4. Boston College tapes (Re Anthony McIntyre)

This was a challenge to the Divisional Courts refusal to allow the applicant a right of appeal in Northern Ireland. The Supreme Court heard arguments on whether the Supreme Court has jurisdiction to hear the applicant’s proposed appeal given that the court from which he seeks to appeal declined to certify that a point of law of general public importance was involved in the decision.

The relevant media footage can be accessed here

5. Irish Supreme Court in Deportation of ISIS Suspect

In this determination (YY v Minister for Justice & Equality), the Supreme Court granted YY leave for a leapfrog appeal from the High Court decision to allow his deportation to proceed, due to the exceptional circumstances of the case. YY was previously imprisoned for planning terrorist acts—including in Ireland. But, if deported to his home state, he faces the risk of treatment contrary to Article 3 of the European Convention on Human Rights (prohibition of torture).

The relevant media footage can be accessed here

The Judgment can be accessed here

6. RUC Murder of IRA volunteer Colum Marks (Re R. Rooney)

In 2016 the then Police Ombudsman History Directorate refused to establish an investigation to the death of Colum Marks in 1991. The Ombudsman claimed he was unable to order a fresh investigation in the absence of new information following a previous review by the RUC at the time. Following media attention in the case a new witness came forward which brought a fresh decision for a new investigation. 

The relevant media footage can be accessed here

7. Immediate Investigation by PONI into the murder of Colum Marks (Re Roisin Marks)

This matter relates to a Judicial Review application brought by Mrs. Róisin Marks in relation to the delay in investigation by the Police Ombudsman in investigating her son’s death in Downpatrick County Down by the RUC. The Applicant was granted leave to apply for judicial review against the decision of the Police Ombudsman of Northern Ireland (“PONI”) contained in the letter dated 20 July 2017, namely that PONI cannot conduct an investigation into the circumstances of Mr Marks death within a reasonable time scale due to the failure of the Department of Justice (“DOJ”) to provide sufficient funding to PONI. In 2017, Roisin Marks brought a judicial review challenge against the failure of the Police Ombudsman of Northern Ireland (“PONI”) to carry out a timeous investigation into her complaint about the shooting of Colum Marks in Downpatrick in 1991. She also sought to challenge the ongoing failure of the Department of Justice, the Executive Committee, and/or the Secretary of State for Northern Ireland to provide adequate funding to the PONI to enable it to carry out legacy investigations without undue delay. 

The relevant media footage can be accessed here

8. DOJ failure to fund the Office of Police Ombudsman. (Re Brendan Morgan)

This matter relates to an application brought by Mr Brendan Morgan in relation to the failure of the Police Ombudsman to carry out a timeous investigation into his complaint into his attempted murder and the attack on the Thierafurth Inn Bar, in Kilcoo County Down in 1992. Background2.On 27 March 2019, Mr Morgan brought a judicial review challenge against the failure of the Police Ombudsman of Northern Ireland (“PONI”) to carry out a timeous investigation. He also sought to challenge the ongoing failure of the Department of Justice to provide adequate funding to the PONI to enable it to carry out legacy investigations without undue delay.

The relevant media footage can be accessed here  

9. Boston College Tapes (Re Anthony McIntyre)

In 2001 Mr. McIntyre became involved in an academic oral history project known as the “Belfast Project” with the tapes becoming known as the Boston College Tapes. On 3 September 2014 the PSNI requested that the PPS issue an ILOR in respect of McIntyre’s tapes. The ILOR was issued on 9 February 2015 through Mutual Legal Assistance under Section 7(5) of the Crime (International Cooperation) Act 2003 seeking access to McIntyre oral tapes. Mr. McIntyre sought to challenge this.

The Judgment can be accessed here

10. Further investigation into the murder of Seamus Ludlow (Re Thomas Fox)

This was a challenge to the decision of the Minister for Justice’s ongoing failure or refusal to establish two commissions of investigation pursuant to the Commission of Investigation Act 2004 (“the 2004 Act”) as per the recommendations of the Houses of the Oireachtas and Judge Henry Barron for the further Commissions into the handling of the murder of Seamus Ludlow by An Garda Síochána. In 2020 this matter was brought before the Court of Appeal in Dublin with judgment reserved.

The Judgment can be accessed here

Prison Law

11. Licence Conditions to extend to ROI  – (Re Gerard McManus (and Keith McConnan)

This was a challenge taken by Mr. McManus from County Donegal and Mr. McConnan from County Louth following their release on licence.  Each of the applicants were subject to licence conditions. These conditions required the applicants to reside in United Kingdom during the period of their licence. Both applicants through these proceedings challenged the refusal to permit them to reside in the Republic of Ireland during their conditions. 

The Judgment can be accessed here.

12. Right for separated Prisoners to use Internet for Education. (Re Brendan McConville)

This was a challenge brought regarding the prison failure to allow the applicant access to computer facilities whilst in custody for the purposes of completing his degree.  

The Judgment can be accessed here

The relevant media footage can be accessed here

13. Access to the Prison Library (Re Sean McVeigh)

This is a challenge brought against NIPS refusal to allow separated prisoners access to the Prison Library or access to Prison Library books. 

14. Transfer to separated conditions on safety grounds (Re: Luke O’Neill

The applicant was remanded to Maghaberry Prison on 27 September 2016. Since then he has been seeking admission to the separated landing for Republican prisoners at Roe House. He argues that it is only in these conditions that he will be safe in prison. His transfer to separated conditions was refused by way of a written notice on 26 October 2016.  As a result, he sought to challenge this citing safety concerns for the place he was housed. 

 The Judgment can be accessed here

15. Failure to properly investigate death threats (Re Luke O’Neill)

Following the matter being remitted by the Court of Appeal back to the trial judge the applicant sought extensive Discovery against the respondents which showed that there was a death threat against the Applicant in the place he was housed. An offer of £50,000 was placed against the applicant and the Prison became aware of this. The Applicant then sought to challenge this for a finding of a breach of Article 2 of ECHR. 

 The Judgment can be accessed here The relevant media footage can be accessed here

16. Information Sharing between Hospitals and Prisons (Re Michael Larkin).

This is a challenge to the refusal to permit the applicant a period of temporary release to visit his mother in hospital before her death. The Applicant argues that this was in breach of his rights as protected by Article 8 ECHR and was unlawful. The applicant learned in the proceedings that the Trust and the Prison refused to provide the necessary information to allow the correct decision to be made.

Director

Peter Corrigan

Director

Darragh Mackin

Darragh Mackin has been described as ‘a rising star on the international legal scene’ (Irish Times), a ‘Champion of the Cause’ (The Parchment) and ‘a man for all seasons, needed for all sorts of reasons’ (Belfast Telegraph).  In July 2016, Darragh was the first ever Ireland based Lawyer to be nominated, and in turn to win, an award at the prestigious London Legal Aid Lawyer of the Year Awards. In 2025, he was one of the Partners that led the team to winning the LEAP ‘Special Recognition Award’ in Dublin and the LALY ‘Law Firm of the Year’ Award in London.

He has developed a specialist practice in Human Rights, Public Law, Litigation and International law.  He has appeared in some of the most high profile cases in Ireland and Internationally. This includes acting for the Hooded Men in their victory in the London Supreme Court, for Sarah Ewart in her challenge to the law on Abortion in Northern Ireland, the families in the Stardust fire Inquest in which a verdict of Unlawful Killing was returned and acting for the Irish rap group Kneecap in their successful challenge to Kemi Badenoch and her decision to withhold funding for the group. He currently acts for the Summerland families in their campaign for a fresh investigation into the fire on the Isle of Man.

He regularly advises high profile individuals and companies both domestically and internationally, with a particular specialism in Reputation Management, Defamation and Data Protection. Given Darragh’s unique experience, he has become the go to lawyer for actions with a digital perspective, appearing in the landmark successful challenge to voice recognition technology and in the first domestic case relating to Cryptocurrency. His unique specialism in the field of digital evidence has resulted in him often being instructed in complex commercial litigation involving data protection principles, the use of AI (artificial intelligence) and the misuse of the internet and social media platforms.

He has acted in cases at all levels including in the Supreme Courts in London and Dublin, The European Court of Human Rights, the African Commission on Human Rights and the United Nations Special Procedures.  

He has acted for some of the most well known non-governmental organisations including Amnesty International, the Association of Personal Injury Lawyers, and Extinction Rebellion. He has been instructed and advised on cases all around the World, including the USA, Spain, France, Italy, Sri Lanka, Malawi, the Cayman Islands and St Helena. His unique international law experience has resulted in him often being instructed to advise Irish and British Citizens overseas on issues of international law.  

Darragh has also successfully secured some of the largest settlements in the jurisdiction including the payment of £16.7million to NI Taxi Drivers arising of the NI Covid Pandemic and €24million to the families of the Stardust fire. He is currently retained in a high value claim on behalf of a Chinese based company initiating action in Belfast, and in a multi million euro claim in Dublin, arising out of insurance contracts to hoteliers during the covid pandemic.

In addition to practice, Darragh is an associate lecturer of Public and Administrative Law at the University of Ulster and has delivered a number of guest lectures at Cambridge University, Trinity University, Queens University Belfast, and Dublin City University.   

NOTABLE CASES

 

Litigation Manager

Danielle Cromie

Paralegal

Colm Dore

Colm is currently a Legal Executive at Phoenix Law, working primarily on Public Law, Inquests and Inquiries. He appeared in the high-profile Stardust Fire Inquests in Dublin  

He works on both Immigration and Criminal matters, in addition to steering civil action against public authorities.

Trainee Solicitor

Conor Campbell-Brennan

Conor is a Trainee Solicitor in the Actions against the Police and Prison Law Department.   

Having completed his LLB Degree at Queens University, Conor has specialised in Civil Actions against public authorities, most notably the PSNI and NI Prison Service.   

Further, Conor has extensive experience in representing client’s before the Parole Commissioners (DCS, ECS, ICS & Life Sentences), Prison Issues and Judicial Reviews, of which have been of significance, such as Re Johnston’s Application [2024] & Re Sheerin’s Application [2025]. 

Conor continues to act in several high value civil actions for damages as a result of acts by public authorities, alongside Prison Issues, Judicial Review’s and Parole Commissioners hearings. 

Solicitor

Diarmuid Brecknell

Diarmuid is a Solicitor in the Public Law, Inquests, and Inquiries Department at Phoenix Law. He completed his LLB at Ulster University and graduated from the Institute of Professional Legal Studies at Queen’s University Belfast in 2025. He specialises in inquests, public inquiries, and actions against public authorities, and is instructed in some of the most high-profile and sensitive cases in the jurisdiction. He also acts in a number of high-value civil claims arising from the conduct of both public bodies and private organisations.

Diarmuid has been involved in some of the most complex and contentious legal challenges brought against public authorities in recent years. His experience includes work on the landmark Supreme Court case Re McGuigan & McKenna (the “Hooded Men”) and the Court of Appeal decision in Re Barnard (the “Glenanne Series”), which resulted in an order for a fresh investigation into more than 120 murders under Operation Denton. He is also instructed in significant civil proceedings flowing from these matters and has played a key role in securing substantial settlements for victims and survivors in claims against the PSNI, MOD, and other state bodies.

His inquest and inquiry experience includes appearing in the historic Stardust Fire Inquest in Dublin, one of the largest and most complex inquests ever held in Ireland. Representing families who had campaigned for justice for over four decades, Diarmuid was part of the legal team that secured unlawful killing verdicts for all 48 victims – a landmark outcome that overturned 40 years of injustice. He has also worked on the Ballymurphy Inquest, which examined the deaths of ten civilians killed during the introduction of internment in 1971, resulting in findings that all of those killed were entirely innocent and that their deaths were unjustified and unlawful.

In addition, Diarmuid has experience in public inquiries concerning institutional abuse, including the Hickson Public Inquiry into historic child sexual abuse in Waterford. He is currently instructed by over 380 victims of Michael Shine in one of the largest institutional-abuse cases ever brought in the State, and has been closely involved in progressing the matter from its earliest stages to the present government-led scoping exercise for a formal public inquiry. Alongside his public law practice, Diarmuid continues to act in complex, high-value civil and commercial litigation in both Northern Ireland and the Republic of Ireland.