Communications Workers' Union (CWU) Registration information Date of registration 10 Dec, 2015 Date last updated 15 Dec, 2017 Contact information Principal Address William Norton House, 575 North Circular Road, Dublin 1, Dublin, Dublin Country Ireland Contact phone number 018663000 Main activities of the organisation Trade union Responsible person Name Ian McArdle Email ian@cwu.ie Phone Number 0866072463 CRO Information CRO N/A Company Registration Name N/A Registration details have changed during return period