| 4DIGIX Ltd | Information & communication | 2003 |
| A J Watson Ltd | Administrative & support | 2006 |
| A.M. Moss Ltd | Professional & scientific | 2003 |
| Achieve Enterprises Limited | Professional & scientific | 2008 |
| ADW Systems Limited | Information & communication | 1998 |
| Agrippa Investments Limited | | 1988 |
| Airfield Enterprises | Agriculture & fishing | 1999 |
| Alan Lyttle OIL Distributors Limited | Wholesale & retail | 2003 |
| Alan Murphy Limited | Wholesale & retail | 2006 |
| Alex Connolly Limited | Wholesale & retail | 1996 |
| Alexander Boyd Displays Limited | Manufacturing | 1961 |
| Anam Cara Travel Ltd | Administrative & support | 2008 |
| Anderson Plastics (NI) Ltd | Manufacturing | 2003 |
| Antrim County Investment Managers Limited | Real estate | 1987 |
| Antrim Supplies Limited | Wholesale & retail | 1984 |
| Architectural Design Services (NI) | Professional & scientific | 2003 |
| Autoparts Direct Limited | Wholesale & retail | 2003 |
| AWB Property Developers Ltd | | 2006 |
| B.Crowe & Sons Limited | Construction | 1952 |
| Ballyclare Special Products Limited | | 1995 |
| Ballymena Advice Centre | Real estate | 2007 |
| Ballymena Business Centre Limited | Wholesale & retail | 1990 |
| Ballymena North Partnership Limited | Real estate | 2004 |
| Ballymena Specsavers Limited | Wholesale & retail | 1994 |
| Ballymena Visionplus Limited | Wholesale & retail | 1994 |
| Bandigital Ltd | Information & communication | 1998 |
| Bannside Furnishings Limited | | 1998 |
| Barbour Campbell Textiles Limited | | 1995 |
| Barry Mccann Limited | Construction | 2004 |
| Belfast Charitable Trust for Integrated Education | Education | 1990 |
| Belfast High School | Education | 1929 |
| Bell & Prospect Limited | Real estate | 2006 |
| BISTRO42 Ltd | | 2007 |
| Blair & Boyd (Estate Management) Limited | Real estate | 2006 |
| Blue Sky Ireland Limited | Information & communication | 2006 |
| Bluebell Developments Ltd | Hospitality | 2005 |
| Boxpak Limited | Manufacturing | 1950 |
| Brendan Callaghan Limited | Extraterritorial | 2004 |
| Brett Martin Holdings Ltd | Professional & scientific | 2003 |
| Brett Martin Limited | Manufacturing | 1972 |
| Britneyhill Properties Limited | Construction | 2001 |
| C.D. Building Contractors Ltd | Construction | 2007 |
| Callisto Enterprises Limited | Hospitality | 2009 |
| Camden Group Limited | Manufacturing | 1983 |
| Cameron Retail Furnishings (N.I.) Limited | Wholesale & retail | 1975 |
| Campbell Industrial Products Limited | Wholesale & retail | 2005 |
| Care & Cure Traditional Chinese Medicine Limited | | 2006 |
| Carrickfergus Glass & Glazing Contractors Ltd | Extraterritorial | 1995 |
| Carrickfergus Motor Company Limited | Real estate | 1957 |
| Carrowdoon Landscape Management Limited | Extraterritorial | 2002 |
| Cashforcarsni.Com Ltd | Extraterritorial | 2009 |
| Castleview P N H Ltd | Health & social care | 2003 |
| Causeway Coal Company Ltd | Wholesale & retail | 2006 |
| CB Development Company Limited | Real estate | 2001 |
| Chelsea Mews Management Limited | Households | 1997 |
| Christian Family Centre (N.I.) Limited | Other services | 1991 |
| Christian Family Centre (Namibia) Limited-The | Other services | 2006 |
| Chubb (NI) Limited | | 2004 |
| CIC Properties Limited | Professional & scientific | 1997 |
| Clear (NI) Ltd | Wholesale & retail | 2003 |
| Clear AV Ltd | Professional & scientific | 2008 |
| Coca-Cola HBC Northern Ireland Limited | Manufacturing | 1945 |
| Colin Glen Landscapes Limited | Arts & recreation | 2003 |
| Cooneen by Design Limited | Manufacturing | 1966 |
| Copperwood Enterprises Limited | Manufacturing | 2014 |
| Corkel Properties Limited | Construction | 2007 |
| Corlea Properties Limited | | 1995 |
| Country Dream Homes Limited | | 2005 |
| Country Estates (NI) Limited | Real estate | 2003 |
| Craig & Co. (NI) Ltd | Construction | 2001 |
| Craigview Homes Ltd | Construction | 2007 |
| Creative Tiles (NI) Limited | Wholesale & retail | 2006 |
| Cushendall District Development Group Limited | Administrative & support | 1992 |
| Cushendall Sailing and Boating Club Limited | Arts & recreation | 1976 |
| Cutter's Wharf Limited | Extraterritorial | 2002 |
| Danbach Limited | | 1999 |
| Dawn Valley Properties Limited | Real estate | 1972 |
| Deirdre Byrne Interiors Ltd | Other services | 2006 |
| Delta RAC Design Ltd | Professional & scientific | 1997 |
| Demeter Beauty Products Limited | | 1992 |
| Demoadvice Limited | | 1996 |
| Dennison Commercials Limited | Wholesale & retail | 1988 |
| Dennison Industrial Estates Limited | Real estate | 1996 |
| Dennison Rentals Limited | Administrative & support | 1989 |
| Dental Medical Ireland Supplies and Equipment Ltd | Wholesale & retail | 2002 |
| Denver Todd Limited | Construction | 2001 |
| Devlin Mechanical Limited | Construction | 2006 |
| DK Mckee & Sons Ltd | Construction | 2003 |
| Doherty Associates Ltd | Professional & scientific | 2007 |
| Doherty's Pharmacy Limited | Wholesale & retail | 2002 |
| Dromada Developments Limited | Real estate | 2006 |
| Drumadd Properties Limited | | 2003 |
| Drumany Property Ltd | Construction | 2004 |
| Dukes Transport (Craigavon) Limited | Extraterritorial | 1971 |
| E & R Logan Limited | Construction | 2001 |
| East Antrim Integrated College Limited | Education | 1994 |
| Ecomesh Ltd | | 2001 |
| Eeg-Ireland.Com Limited | Health & social care | 2006 |
| EMG Analysis Limited | Professional & scientific | 2006 |
| Enersafe Limited | Professional & scientific | 1989 |