| Northern Salmon Company Limited | Agriculture & fishing | 1987 |
| Octane Underwriting Limited | Financial services | 2002 |
| Old Market Vans Limited | Wholesale & retail | 1999 |
| Olympian (Members) Limited | | 1998 |
| Omac Services Limited | Construction | 2004 |
| Paints & Components (Ballymoney) Limited | Wholesale & retail | 1976 |
| Papilon Limited | Agriculture & fishing | 2005 |
| Park Madden & Co | Professional & scientific | 2003 |
| Patton Hire Centres Limited | Extraterritorial | 1988 |
| PCG Structures Limited | Construction | 1997 |
| Peak Company Limited | Real estate | 1999 |
| Pencro Structural Engineering Limited | Manufacturing | 1989 |
| Pendragon Pictures (Europe) Limited | Extraterritorial | 2002 |
| Performance (NI) Limited | Other services | 2004 |
| Pinehill Properties Limited | Professional & scientific | 2006 |
| Portora Estates Limited | Real estate | 1998 |
| Portrush Engineering Limited | | 1973 |
| PW Tiling Services Limited | Construction | 2007 |
| Quality Consultants (NI) Ltd | Professional & scientific | 2004 |
| Qualtec Design & Management Limited | Professional & scientific | 2005 |
| Quilters Quest Limited | Wholesale & retail | 2003 |
| R a Leathem Ltd | Wholesale & retail | 2007 |
| R G Marshall Limited | Construction | 2000 |
| R. Kennedy & Co. (NI) Limited | Wholesale & retail | 1963 |
| R. Robinson & Sons (Chartered Architects & Civil Engineers) Ltd | Construction | 2004 |
| REA Brothers (Larne) Limited | Manufacturing | 2003 |
| Red Bay Computer Consultants Limited | Information & communication | 2000 |
| Rentatruck (Self Drive) Limited | Administrative & support | 1985 |
| Retlan Manufacturing Ltd | Extraterritorial | 1998 |
| Rezara Properties Limited | Real estate | 1998 |
| Rice Family Charitable Trust | Administrative & support | 2004 |
| Richard Rodgers Limited | Construction | 2008 |
| Richfield Developments Limited | Real estate | 1986 |
| Road Trucks Limited | Wholesale & retail | 1974 |
| Robert Adair Jewellers Limited | Wholesale & retail | 2007 |
| Robin Rainey and Sons Limited | Manufacturing | 1999 |
| S & S Mcilroy Limited | Hospitality | 2007 |
| S a Houston & Co Limited | Construction | 2002 |
| S.P.L. Foods (Northern Ireland) Limited | Wholesale & retail | 2025 |
| Salight Foundation Limited - the | Professional & scientific | 1999 |
| Sandhaven Apartments Management Limited | Real estate | 2006 |
| Sandhill Properties Ltd | Agriculture & fishing | 2003 |
| Scanning Imaging Microfilming Solutions Limited | | 2000 |
| Scorpio Management Services Limited | | 1999 |
| SDC Trailers Limited | Manufacturing | 1982 |
| Sheep Island View Accommodation Limited | Hospitality | 1996 |
| Sinai Training Solutions Limited | Professional & scientific | 2002 |
| SJC Consultancy & Advisory Ltd | Professional & scientific | 2019 |
| Sleator Plant Limited | Wholesale & retail | 1996 |
| Slemish College Limited. | Education | 1995 |
| Smyth Patterson Limited | Wholesale & retail | 1945 |
| South Antrim Community Transport | Transport & logistics | 2004 |
| Stephen J. Mcdonald Limited | Professional & scientific | 2006 |
| Stepping Stones NI | Other services | 1996 |
| Stoneyford Concrete Ltd | Extraterritorial | 2004 |
| Style Menswear Limited | | 2004 |
| Sudo Limited | Other services | 2007 |
| T. Alexander & Co. (Lisburn) Limited | Hospitality | 1969 |
| T. Mackle | Wholesale & retail | 1999 |
| Talkpoint Lisburn Limited | | 1998 |
| Taylor and Boyd LLP | | 2005 |
| THE Old Bushmills Distillery Company Limited | Manufacturing | 1930 |
| Toland Holdings (N.I.) Limited | Construction | 1995 |
| Tomark Developments Ltd | Construction | 2002 |
| Tractormatic Limited | Wholesale & retail | 1987 |
| Trade Cars NI Limited | Administrative & support | 2004 |
| Triple a Chemicals Ltd | | 2000 |
| TRU Colours Hair Bar Ltd | Other services | 2006 |
| Truck & Trailer Spares (NI) Ltd | Wholesale & retail | 2006 |
| True Future Development Corporation | | 2004 |
| Tullycar Limited | Real estate | 2006 |
| Twins and Partners Limited | Professional & scientific | 2006 |
| U.W.T Limited | Construction | 2003 |
| Ulster Roads, Limited | Construction | 1951 |
| Uni-Trunk Properties Limited | Real estate | 2002 |
| Unifi Textured Yarns Europe Limited | | 1997 |
| Unique Developments (NI) Ltd | Construction | 2007 |
| Valemount Developments Limited | Real estate | 2005 |
| Vaughan Electrical Services Limited | Extraterritorial | 1974 |
| VF Capital Limited | Professional & scientific | 2007 |
| Walk Management Limited | Administrative & support | 2003 |
| Warke Meharg Ltd | Real estate | 2002 |
| Watch Parts International Ltd | | 2001 |
| Wavelength Consulting Limited | Professional & scientific | 1996 |
| Weber & Broutin United Kingdom Limited | | 1999 |
| Whinsmoor Lodge Management Company Ltd | Households | 2003 |
| Wilsons Auctions (Portadown) Limited | Professional & scientific | 1987 |
| Windmill Business Park Management Company Limited | Real estate | 2007 |
| Windsor Developments Limited | Construction | 1971 |
| WM. J. Macnab & Co. (Sales) Limited | Manufacturing | 1964 |
| Woodside Haulage Limited | Transport & logistics | 1981 |
| Woodside Tankfreight Limited | Transport & logistics | 1968 |
| Wyvale Properties Limited | Real estate | 2007 |
| Yeates Estates Limited | | 2007 |