He subsequently obtained a diploma in legal studies and trained to be a barrister at the King's Inns.
[2] The Health Service Executive appointed Dignam and Siobhán Phelan to represent interests of an unborn child in PP v. HSE in 2014.
[4] He chaired an inquiry into the Leas Cross scandal in 2010 and was commissioned to write an investigative report arising out of the 'Grace' case.
[5][6] Outside of practice, he was appointed a board member of Community Law & Mediation in 2020 and was the vice chair of the Bar Council of Ireland.
[7][8] Dignam was one of three people nominated by the government in November 2021 to be appointed judges of the High Court.