| 6 Crescent Gardens Ltd | Households | 2018 |
| 60-62 Upper Newtownards Road Management Company Limited | Extraterritorial | 2022 |
| 600RDZ Ltd | Other services | 2025 |
| 6030 Design and Build Ltd | Professional & scientific | 2018 |
| 64 Seacliff Road Management Company Limited | Households | 2019 |
| 65 Malone Avenue Limited | Households | 2022 |
| 66 Days Films Limited | Information & communication | 2015 |
| 66 Dufferin Avenue Property Management Ltd | Real estate | 2008 |
| 691 Initiative Ltd | Information & communication | 2022 |
| 6CYCLE NI Ltd | Wholesale & retail | 2026 |
| 7 Malone Road Management Ltd | Real estate | 2017 |
| 71 Films Limited | Information & communication | 2017 |
| 76 Dunluce Avenue Management Company Limited | Households | 2018 |
| 77 Property Holdings Ltd | Real estate | 2023 |
| 77 Rentals Ltd | Real estate | 2024 |
| 77 Retail 2 Limited | Wholesale & retail | 2016 |
| 77 Retail 3 Limited | Wholesale & retail | 2020 |
| 77 Retail Ballynure Holdings Limited | Wholesale & retail | 2022 |
| 77 Retail Ballynure Limited | Wholesale & retail | 2022 |
| 77 Retail Cadogan Holdings Limited | Wholesale & retail | 2022 |
| 77 Retail Cadogan Limited | Wholesale & retail | 2022 |
| 77 Vision Way Ltd | Professional & scientific | 2021 |
| 7747 Media Ltd | Professional & scientific | 2016 |
| 7D Aesthetics Limited | Health & social care | 2021 |
| 7TWENTY Recruitment Limited | Administrative & support | 2019 |
| 8-6 Cromwell Road Apartments RTM Company Limited | Hospitality | 2016 |
| 84 Shore Road Management Ltd. | Households | 2018 |
| 85 UNI Street Management Company Limited | Households | 2022 |
| 85SOUTHPARADE Property Management Ltd | Households | 2021 |
| 88 AM | Professional & scientific | 2019 |
| 88 North Parade Limited | Households | 2023 |
| 89 Malone Avenue Management Limited | Extraterritorial | 2014 |
| 8CYCLE NI Ltd | Wholesale & retail | 2024 |
| 91 Ravenhill Road Management Company Ltd | Households | 2026 |
| 918 Ventures Limited | Information & communication | 2025 |
| 93:20 Investments Limited | Real estate | 2019 |
| 94.IO Ltd | Information & communication | 2024 |
| 96 Dufferin Avenue Management Limited | Real estate | 2014 |
| 999 Better Call Paul Ltd | Other services | 2023 |
| 9CYCLE NI Ltd | Wholesale & retail | 2025 |
| 9D Warriors Community CIC | Education | 2026 |
| 9LIVES Development Ltd | Information & communication | 2025 |
| 9TH Door Ltd | Arts & recreation | 2023 |
| @NDY Locksmith Ltd | Administrative & support | 2021 |
| @Rjmcc Limited | Professional & scientific | 2019 |
| A & a Building Services (2023) Ltd | Construction | 2023 |
| A & a Consultants Ltd | Financial services | 2025 |
| A & a Harding & Co Ltd | Wholesale & retail | 2005 |
| A & B Electrical Ltd | Construction | 2025 |
| A & C Pharma Ltd | Wholesale & retail | 2023 |
| A & D Global PVT Ltd | Hospitality | 2017 |
| A & E Construction Services Ltd | Construction | 2009 |
| A & G Developments (Belfast) Limited | Construction | 2018 |
| A & G Developments Ltd | Real estate | 2000 |
| A & J Moses Ltd | Agriculture & fishing | 2025 |
| A & K Vape Distro Ltd | Wholesale & retail | 2020 |
| A & M Nails Ltd | Other services | 2024 |
| A & R Electrical Contracts Ltd | Construction | 2022 |
| A & R Interiors Belfast Ltd | Wholesale & retail | 2018 |
| A & S Jost (Northern Ireland) Limited | Extraterritorial | 1991 |
| A and L Leasing Limited | Wholesale & retail | 2020 |
| A and M CT Limited | Health & social care | 2022 |
| A Bar Nerd Limited | Other services | 2026 |
| A Blocks Nexus Ltd | Information & communication | 2025 |
| A City Limited | Manufacturing | 2023 |
| A D Contracts (2026) Ltd | Construction | 2025 |
| A E Geospatial Services Ltd | Professional & scientific | 2023 |
| A F Services N.I. Ltd | Construction | 2025 |
| A Fruity Affair Limited | Information & communication | 2024 |
| A G Rodgers Limited | Construction | 2018 |
| A H IP Network Services Limited | Information & communication | 2019 |
| A J Agencies Limited | Wholesale & retail | 1998 |
| A Kerr Properties Ltd | Real estate | 2024 |
| A L Glengormley Ltd | Hospitality | 2025 |
| A Little Home Limited | Wholesale & retail | 2023 |
| A M Agencies Ltd | Professional & scientific | 2008 |
| A M K Consulting Engineers Limited | Information & communication | 2013 |
| A M Transport Services Ltd | Transport & logistics | 1997 |
| A MCG Imaging Limited | Health & social care | 2022 |
| A Mcghee Property Care Ltd | Construction | 2019 |
| A North Coast Local Ltd | Arts & recreation | 2017 |
| A P Gilchrist Contracts Ltd | Construction | 2019 |
| A P Vehicle and Plant Equipment Ltd | Transport & logistics | 2015 |
| A Positive Life | Education | 1993 |
| A Robinson (N.I.) Ltd | Other services | 2015 |
| A S Auto Spark Limited | Wholesale & retail | 2026 |
| A S Restaurant (Dundonald) Ltd | Hospitality | 2022 |
| A Sailor's Grave Limited | Wholesale & retail | 2019 |
| A Shadowing Angel Security and Training Services Ltd | Administrative & support | 2017 |
| A Squared Locations Limited | Information & communication | 2025 |
| A&A ADE Ltd | Health & social care | 2024 |
| A&B Traders Ltd | Wholesale & retail | 2025 |
| A&Co Home Ltd | Wholesale & retail | 2025 |
| A&E Global Properties Limited | Real estate | 2026 |
| A&G Rasool Limited | Wholesale & retail | 2009 |
| A&J Contracts (NI) Limited | Other services | 2007 |
| A&J Zaguirre Property Management Ltd | Real estate | 2023 |
| A&K Surgical Ltd | Health & social care | 2019 |
| A&L Goodbody Northern Ireland LLP | | 2021 |
| A&L Wallace Healthcare Limited | Financial services | 2022 |