A past pupil of Templeogue College, Niall is a member of St. Mary’s College RFC, where he served as President in the 2009/10 season.
Niall has served on the Leinster Branch in several roles since 1999 where he was a member of the Junior Committee and chair of Competitions Committee.
He was President of the Leinster Branch for the 2017/18 season and elected to the IRFU Committee in 2018. He served as Chair Designate of the Management Committee since October 2020.