Missionary priests of this Order have responsibility for six parishes of the Wrexham Diocese. They serve in Colwyn Bay and Blaenau Ffestiniog, and the parishes of the Isle of Anglesey - Amlwch, Llangefni, Holyhead, and Beaumaris. There is also a chaplain resident in the Mercy Nursing Home, Colwyn Bay.
For more about the parishes of Anglesey, go to www.omianglesey.org
A lay Association - MAMI - Missionary Association of Mary Immaculate supports them by fund raising and other activities.