| 13 Merchant Limited | Hospitality | 2023 |
| A One Tyres (Dromore) Ltd | Manufacturing | 2005 |
| A T Centre Ltd | Manufacturing | 2023 |
| A1 Autos Dromore Ltd | Wholesale & retail | 2010 |
| A1 Crash Recovery Ltd | Wholesale & retail | 2020 |
| A1 Tax Consultants (NI) Ltd Ltd | Professional & scientific | 2019 |
| Abby Higgins Ltd | Information & communication | 2026 |
| Absolutely Spotless (Ulster) Limited | Administrative & support | 2016 |
| AC Contracts Ltd | Administrative & support | 2025 |
| ADP Film Services Ltd | Information & communication | 2017 |
| Advance Coach Ltd | Professional & scientific | 2015 |
| Advance Financial Solutions Ltd | Financial services | 2012 |
| Advanced Laser NI Ltd | Health & social care | 2026 |
| Aesthetics by Christine Ltd | Health & social care | 2023 |
| Aesthetics by Paula D Limited | Other services | 2022 |
| AF Farms Ltd | Agriculture & fishing | 2021 |
| AG & AM Johnston Limited | Wholesale & retail | 2010 |
| Agrm Engineering Ltd | Professional & scientific | 2026 |
| AHJ Homes Ltd | Real estate | 2024 |
| Airtana Limited | Energy | 2015 |
| Airtec Cooling Solutions Ltd | Energy | 2024 |
| Allen Organs (NI) Ltd | Professional & scientific | 2004 |
| Alleng Solutions Ltd | Professional & scientific | 2015 |
| Alleviate Building Services and Digital Design Ltd | Professional & scientific | 2026 |
| Alvorense Limited | Professional & scientific | 2022 |
| AMA Inns Ltd | Hospitality | 2022 |
| Amor Rustic Arts Limited | Arts & recreation | 2019 |
| Andrew Herron Transport Ltd | Transport & logistics | 2014 |
| Angel Wedding Film Ltd | Information & communication | 2020 |
| Annecy Laser Aesthetics Ltd | Other services | 2020 |
| Annex GMP and QP Consultancy Limited | Professional & scientific | 2017 |
| Apdx Consulting Ltd | Professional & scientific | 2025 |
| Apex Phase One Ltd | Health & social care | 2025 |
| Apex Phase Two Ltd | Wholesale & retail | 2025 |
| APH Consultants Ltd | Administrative & support | 2021 |
| Archies Autos Ltd | Wholesale & retail | 2018 |
| Ards Trust Limited | Extraterritorial | 1999 |
| Ardtana Management Company Limited | Households | 2015 |
| Ardtanagh Holdings Ltd | Financial services | 2023 |
| Ariana Estates Ltd | Real estate | 2025 |
| Ashfield Autos Ltd | Wholesale & retail | 2015 |
| Ashfield Tyres Ltd | Manufacturing | 2018 |
| Ashvale Homes Ltd | Construction | 1999 |
| AST Groundworks Ltd | Construction | 2024 |
| Auto Trade (N.I.) Limited | Wholesale & retail | 2014 |
| Auto Valet Experts Ltd | Wholesale & retail | 2021 |
| Auxilia Group Ltd | Professional & scientific | 2025 |
| Avsd Holdings Ltd | Professional & scientific | 2026 |
| B & K Steenson Coatings Ltd | Manufacturing | 2016 |
| B Mcneill Electrical Ltd | Construction | 2026 |
| B. K. Windows Systems Ltd | Construction | 2014 |
| B2S Hair Parlour Ltd | Other services | 2025 |
| Ballycross Developments Ltd | Construction | 2015 |
| Ballygowan Contracts Ltd | Administrative & support | 2004 |
| Ballyhannon Developments Ltd | Construction | 2015 |
| Ballymore Contracts Ltd | Construction | 2025 |
| Ballynaris Ltd | Water & waste | 2013 |
| Ballysallagh Properties Ltd | Real estate | 2022 |
| Banbridge Motor Works Ltd | Wholesale & retail | 2022 |
| Banha Limited | Construction | 2026 |
| Barnview Farm Ltd | Wholesale & retail | 2021 |
| Basalt Theory Limited | Hospitality | 2026 |
| BC Shutters & Doors Limited | Manufacturing | 2004 |
| BE Energy Partners Limited | Construction | 2014 |
| Beaumont Hill Developments Limited | Construction | 2020 |
| Beauty Bank Dromore Ltd | Other services | 2026 |
| Beresford Kitchens and Interiors Limited | Manufacturing | 2022 |
| Berry Farms Bloodstock Ltd | Agriculture & fishing | 2019 |
| Bidgenii Limited | Professional & scientific | 2020 |
| Biggerstaff Body Repairs Ltd | Wholesale & retail | 2019 |
| Bill Waugh Construction Limited | Construction | 1975 |
| Birchwood Holdings Ltd | Financial services | 2019 |
| Bishopscourt Farms Ltd | Agriculture & fishing | 2011 |
| BKT Aero Ltd | Extraterritorial | 2025 |
| Bluelight Medical Training Ltd | Health & social care | 2004 |
| BOE Developments Limited | Construction | 2003 |
| Brajamas Limited | Wholesale & retail | 2024 |
| BRASSY2SASSYY Ltd | Other services | 2022 |
| Brian Keys Tractors Ltd | Wholesale & retail | 2000 |
| Business Management Systems Technology Limited | Information & communication | 2013 |
| C&K Mcdonnell Ltd | Manufacturing | 2020 |
| C.A.L.M. Coffee House Ltd | Hospitality | 2018 |
| Cahore Meadows Management Company Ltd | Households | 2021 |
| Cairns and Downing Ltd | Real estate | 2020 |
| Calvin Projects Kinallen Ltd | Construction | 2026 |
| Camderry Developments Ltd | Construction | 2013 |
| Carnifex Ltd | Real estate | 2024 |
| Carwin (IRL) Ltd | Transport & logistics | 2023 |
| Castle Inns (NI) Limited | Hospitality | 2014 |
| Castletown Services Ltd | Real estate | 2019 |
| Cavan Hill Wind Turbine Ltd | Energy | 2026 |
| CDK Homes Ltd | Real estate | 2026 |
| CE Accountants Ltd | Professional & scientific | 2023 |
| Cebej Ltd | Professional & scientific | 2026 |
| Cedar Hill Developments Ltd | Construction | 2019 |
| Centerfeed Solutions Ltd | Hospitality | 2020 |
| Charles Baron Lurgan Ltd | Construction | 2002 |
| Cherryhill Restaurant Group Ltd | Hospitality | 2015 |
| Citruscart Ltd | Wholesale & retail | 2024 |
| CJC Contracts (N.I.) Ltd | Construction | 2018 |