| (NI) Britain Tech Limited | Wholesale & retail | 2021 |
| 0033 (Propcoso) Limited | Arts & recreation | 2020 |
| 028CAFE Limited | Hospitality | 2025 |
| 07 1HH 116 Limited | Real estate | 2019 |
| 07 1HH 132 Limited | Real estate | 2019 |
| 1 Knockvale Park Management Limited | Real estate | 2013 |
| 1-5 Hawthorne Way Management Ltd | Households | 2020 |
| 1-EXPERIENCE Group Ltd | Administrative & support | 2026 |
| 1-EXPERIENCE Recruitment Group Ltd | Administrative & support | 2025 |
| 1-EXPERIENCE Recruitment Ltd | Administrative & support | 2026 |
| 1-EXPERIENCE Training Academy Ltd | Administrative & support | 2026 |
| 1-EXPERIENCE Workplace Solutions Ltd | Administrative & support | 2026 |
| 1-HEALTHCARE Agency Ltd | Administrative & support | 2026 |
| 10 the Avenue Management Company Ltd | Real estate | 2008 |
| 100 FT Limited | Professional & scientific | 2012 |
| 100 Pure New Zealand Honey Ltd | Wholesale & retail | 2025 |
| 100 Stranmillis Road Limited | Real estate | 2013 |
| 100% Cold Chain Ltd | Wholesale & retail | 2020 |
| 101 Belfast Limited | Hospitality | 2016 |
| 101 Training Solutions Ltd | Health & social care | 2015 |
| 1013 Properties Ltd | Real estate | 2026 |
| 103 University Street Management Company Limited | Households | 2020 |
| 107 Consultancy Ltd | Professional & scientific | 2025 |
| 1080 Limited | Extraterritorial | 2017 |
| 10TH Avenue Limited | Financial services | 2020 |
| 10X Software Limited | Information & communication | 2021 |
| 11 Deramore Park Management Limited | Households | 2025 |
| 11 Rushfield Avenue Limited | Households | 2022 |
| 115A Dundrum Ltd | Households | 2020 |
| 12-22 Lady Wallace Road Townhouse Estate Management Company Limited | Households | 2013 |
| 123 AKD Ltd | Wholesale & retail | 2023 |
| 123 the Mount Management Company Limited | Households | 2023 |
| 123DOOR Limited | Wholesale & retail | 2018 |
| 123E@AB (U.K.) Trade Business Ltd | Information & communication | 2023 |
| 13 Wellington Park (Management) Ltd | Households | 2018 |
| 134 Property Management Co Ltd | Households | 2022 |
| 134 University Avenue Management Company Limited | Households | 2020 |
| 138 Jordanstown Road Apartment Management Company (NO.2) Limited | Households | 2011 |
| 14 Grampian Avenue Management Company Limited | Real estate | 2021 |
| 14 Lisburn Road Management Company Limited | Households | 2018 |
| 1440 Design Ltd | Professional & scientific | 2014 |
| 15 North Management Limited | Professional & scientific | 2022 |
| 152 Industries | Information & communication | 2023 |
| 155 Templemore Management Company Limited | Households | 2022 |
| 158 Belfast Limited | Real estate | 2022 |
| 158 Holywood Road Management Company Ltd | Households | 2024 |
| 16 Derryvolgie Ltd | Households | 2023 |
| 16 Upper Crescent Management Company Ltd | Households | 2020 |
| 1614 Limited | Hospitality | 2021 |
| 161XI Limited | Real estate | 2018 |
| 17-19 Bloomfield Road Management Company Limited | Real estate | 2015 |
| 1701 Integrated Services Ltd | Education | 2026 |
| 172 Tates Avenue Management Ltd | Households | 2007 |
| 186 Coffee Ltd | Hospitality | 2026 |
| 18IRELAND Ltd | Administrative & support | 2024 |
| 19 Brookhill Avenue Management Company Limited | Households | 2007 |
| 1993 Holdings Ltd | Financial services | 2024 |
| 1F Investments Ltd | Construction | 2017 |
| 1PHL Limited | Wholesale & retail | 2024 |
| 1ST Bangor Football Club Limited | Arts & recreation | 2025 |
| 1ST Cabs Ltd | Transport & logistics | 2010 |
| 1ST Care & Recruitment Services Ltd | Administrative & support | 2026 |
| 1ST for Beds (NI) Ltd | Wholesale & retail | 2017 |
| 1STOPTRAVELSHOPUK Limited | Professional & scientific | 2015 |
| 1TO1MUSIC Ltd | Manufacturing | 2013 |
| 1TRUTH Limited | Information & communication | 2015 |
| 2 Ardenlee Street Limited | Households | 2015 |
| 2 Duncairn Avenue Management Company Limited | Households | 2021 |
| 2 MEN and a Grill Ltd | Manufacturing | 2022 |
| 2 Strand Road Limited | Hospitality | 2011 |
| 2 Surrey Street Management Ltd | Households | 2019 |
| 2-I-CONSULTANTS Ltd | Professional & scientific | 2017 |
| 20/20 Hospitality Ltd | Health & social care | 2015 |
| 200 FT Limited | Professional & scientific | 2012 |
| 202 Lancaster Way (ELY) Limited | Extraterritorial | 2017 |
| 2030 Properties Limited | Construction | 2012 |
| 205 Albertbridge Road Management Company Limited | Real estate | 2021 |
| 22 Union Limited | Wholesale & retail | 2024 |
| 221B Productions Limited | Information & communication | 2021 |
| 222 Malone Road Management Limited | Households | 2006 |
| 223 Belmont Road Management Company Limited | Households | 2014 |
| 23B Solutions Ltd | Wholesale & retail | 2025 |
| 24 Wellington Park Management Limited | Households | 2014 |
| 24-40 Upper Newtownards Road Management Limited | Households | 2018 |
| 243 Woodstock Road Management Company Limited | Households | 2022 |
| 247 Aircraft Maintenance Limited | Manufacturing | 2026 |
| 247 Aviation Limited | Transport & logistics | 2020 |
| 247 Transnet Ltd | Transport & logistics | 2007 |
| 248 East Limited | Hospitality | 2016 |
| 25 Annadale Management Company Ltd | Households | 2008 |
| 25TH Hour Ltd | Arts & recreation | 2025 |
| 26 Sandown Road Management Company Limited | Real estate | 2015 |
| 26 West Bar & Grill Limited | Hospitality | 2018 |
| 2682 Bloomfield SC Bangor (Leaseco) Limited | Arts & recreation | 2020 |
| 26KC Limited | Hospitality | 2024 |
| 2717 Crescent Link Londonderry (Leaseco) Limited | Arts & recreation | 2020 |
| 2735 Foyleside SC Londonderry (Freeholdco) Limited | Real estate | 2018 |
| 28 E-Solutions Ltd | Other services | 2022 |
| 294BELFAST Ltd | Real estate | 2024 |
| 298 Beersbridge Road Management Company Limited | Real estate | 2012 |