Jack was admitted as a Solicitor in 2007.

He practices in various areas of Civil and Criminal Law. 

Jack has carriage of a variety of County Court actions and provides business services such as Debt Recovery, Liquor Licensing and Commercial Contract/Leases to large companies within Ireland. 

He also represents clients under arrest in Police Stations and defends clients at all levels of Court.

Jack has a special interest in Crown Court Appeals against both Conviction and Sentence as well as an interest in Human Rights, Civil Liberties and Criminal Justice having graduated from the LLM in Human Rights and Criminal Justice, Queen's University Belfast in 2005.

Fearghál graduated from Queen's University Belfast in 1997 and joined Madden & Finucane in 1998, working extensively at the Bloody Sunday Inquiry, where Madden & Finucane represented ten of the families of the Deceased and several of the Wounded, as a Team Leader until the conclusion of the evidence in 2004.

Fearghál now specialises in applications for Judicial Review and has successfully challenged many public authorities, notably the NI Prison Service, Chief Constable, Northern Ireland Office, Education & Library Boards and Health & Social Services Trusts.

He has also successfully represented clients in Judicial Reviews before the Court of Appeal in Northern Ireland and House of Lords and also has considerable experience in controversial inquests, involving the use of lethal force by the Security Forces, deaths in custody and Social Services care.

Fearghál has a special interest in Prison Law and frequently represents life sentenced prisoners in hearings before the Parole Commissioners.

Fearghál has also successfully represented applicants in actions against the British Government before the European Court of Human Rights in Strasbourg.