- Aer Lingus
- Aldi Ireland Ltd
- Alcon Pharmaceutical Ireland
- Allied Irish Bank plc
- Bank of Ireland plc
- Beacon Medical Group
- Belvedere College
- Bristol Myers Squibb Ireland
- Castlethorn Construction
- Central Bank of Ireland
- Chesterbridge Developments
- Cork City Council
- Cork University Private Clinic Ltd
- Department of Defence
- Department of Justice
- Deerland Properties
- Dovatron (Ireland) Ltd
- Dublin Airport Authority
- Dublin City Council
- Dublin City University
- Dublin Port & Docks Board
- Dun Laoghaire Rathdown County Council
- Electricity Supply Board
- Eastern Health Board
- Eircom plc
- Enterprise Ireland
- Fingal County Council
- Fitzgerald (Hotel) Group
- Financial Services & Regulatory Authority of Ireland
- Frinailla Developments
- Green Properties plc
- Greenstar
- Helsinn Pharmaceutical
- Health Service Executive
- Howard Holdings plc
- Independent News & Media
- Industrial Development Agency (IDA)
- Institute of Technology (Athlone)
- Intel Corporation
- Irish Permanent Building Society
- Irish Rail
- Icon Clinical Research
- Landmark Developments
- Lanmeur Developments
- Lidl Ireland
- Louth County Council
- Malting Council of Ireland
- Merck Sharp & Dohme
- National Training & Development Institute
- Office of Public Works (OPW)
- Pfizer Pharmaceutical
- Profile Properties
- South Dublin County Council
- St Vincent's Private Hospital
- St. Lukes Hospital
- St. Patrick's Hospital
- Tallaght Hospital Board
- The Lodge at Doonbeg Ltd
- Trinity College Dublin
- United Cinema International
- University College Dublin
- University College Galway
