The present church was consecrated in July 1979. The building is of red brick construction with a narrow spire. This drew much public attention during the latter stages of construction as it was lowered into place by helicopter.
Following completion of the building, it was beset by a major structural defect relating to the roof support. This has since been rectified.

The Altar

Our Lady's Altar

Plaque displaying past
and present Parish Priests
Records of the parish of Holy Trinity date back as far as the 1830s.
The original church was situated on Parliament Street. This was of rendered finish and had a bell tower. The bell, sadly, was unable to be used due to safety concerns for many years.
For more information about the church on Parliament Street, read the Parish History section of this site.
The following is a chronological list of all the Parish Priests who have served Holy Trinity:
| James Yver | ????-1836 | Died ??/??/?? |
| Very Rev. Provost James Waterworth | 1836-1876 | 28/03/1876 |
| Rev. Father Edmund Smith | 1876-1904 | 11/05/1916 |
| Right Rev. Mgr Canon John Hadican | 1904-1929 | 13/02/1958 |
| Rev. Father Claude Bostock | 1929-1944 | 05/07/1956 |
| Very Rev. Canon John Bernard Farmer | 1944-1962 | 26/09/1962 |
| Right Rev. Mgr Peter J. O’Dowd | 1962-1976 | 24/11/2000 |
| Rev. Father Timothy O’Sullivan | 1976-1993 | |
| Fr. Michael Stappard | 1993-1998 | |
| Mgr. Brian Dazeley. | 1998-2008 | |
| Fr. Michael O'Donoghue. | 2008-present |
And the Assistant Priests:
| Fr. Fitzgerald | Fr. Bernard Doran |
| Fr. Roche | Fr. Joe McGovern |
| Fr. A. White | Fr. Joe Carty |
| Fr. Lyons | Fr. Brian Finerty |
| Fr. Brady | Fr. Eoin O’Mahony |
| Fr. Bernard Kevill | Fr. John Mack |
| Fr. Ronald Hudson R.I.P. | Fr. Joseph Maguire |
| Fr. Michael Brown | Fr. Philip Baker |
| Fr. John Tavares | Fr. Joseph Dom |