[3][4] He represented the Minister for the Environment in 2003 in a challenge by Kathy Sinnott against the result of the 2002 Irish general election.
[6] His investigation found that the Stardust Victims' Committee had not established any new evidence which could change the conclusion as to how the fire was started.
[11] He has presided over criminal trials involving serious sexual offences and homicide.
[12][13] He has been the presiding judge in cases in the Special Criminal Court involving dissident republicans and the Hutch–Kinahan feud.
[14][15] Other than criminal trials, he has heard cases involving Garda compensation,[16] defamation,[17] insolvency,[18] and company law.