| N M Motor Repairs Ltd | Wholesale & retail | 2022 |
| N W Communications Ltd | Wholesale & retail | 2020 |
| N&A Limited | Professional & scientific | 2019 |
| N&B Roofing Services Ltd | Construction | 2026 |
| N&C Constructions Ltd | Construction | 2019 |
| N&D Drylining Ltd | Construction | 2025 |
| N&G Staircase Ltd | Construction | 2019 |
| N&J Construct Ltd | Construction | 2023 |
| N&J Property Group Limited | Real estate | 2026 |
| N&L Associates Limited | Professional & scientific | 2021 |
| N&P Co. Limited | Professional & scientific | 2025 |
| N&V Transport Ltd | Transport & logistics | 2026 |
| N-Joy IT Services Ltd | Administrative & support | 2007 |
| N.A Drylining Ltd | Construction | 2020 |
| N.A.D Accountancy Solutions Ltd | Professional & scientific | 2018 |
| N.R.M. Global Limited | Real estate | 2020 |
| N1SUPPLY Ltd | Wholesale & retail | 2018 |
| N28 Consulting Limited | Information & communication | 2018 |
| N3O Ltd | Information & communication | 2018 |
| N5 Facilities Ltd | Administrative & support | 2025 |
| N5 Security Ltd | Administrative & support | 2021 |
| N8 Solutions Ltd | Construction | 2009 |
| NA Medical Services Limited | Health & social care | 2024 |
| Naan Staap Southall Limited | Hospitality | 2024 |
| NAB Fast Food Ltd | Hospitality | 2025 |
| Nabeel Dynamics Limited | Wholesale & retail | 2025 |
| Nabeel Foundation | Education | 2024 |
| Nabshalom Homes Ltd | Hospitality | 2025 |
| Nachestly Enterprises Ltd | Construction | 2025 |
| Nacroview Limited | Households | 1989 |
| Nafh Facility Maintenance Services Ltd | Construction | 2020 |
| Nafn Ventures Ltd | Administrative & support | 2026 |
| Nagc Limited | Professional & scientific | 2025 |
| Nahc Development Ltd | Real estate | 2025 |
| Nahida KRD Ltd | Wholesale & retail | 2026 |
| Naia-Yusra Ltd | Hospitality | 2026 |
| Nail a Home Limited | Real estate | 2020 |
| Nail and Beauty Accessories Ltd | Wholesale & retail | 2019 |
| Nail and Needle Limited | Other services | 2025 |
| Nails by LE Limited | Other services | 2019 |
| Nails in the Park Ltd | Other services | 2026 |
| Nambe Ltd | Construction | 2025 |
| Name 04 Ltd | Hospitality | 2025 |
| Namoli Realty Limited | Real estate | 2021 |
| Nams Healthcare Limited | Health & social care | 2015 |
| Nana's Innovations Ltd | Hospitality | 2025 |
| Nanak Group of Companies Ltd | Real estate | 2022 |
| Nancas Limited | Professional & scientific | 2022 |
| Nande Afro Caribbean Ltd | Hospitality | 2025 |
| Nande Caribbean Restaurant Limited | Hospitality | 2023 |
| Nande Salon and Spa Limited | Other services | 2018 |
| Nandes Unisex Salon Ltd | Other services | 2024 |
| Naner Health Ltd | Health & social care | 2021 |
| Nangeli Boutique Ltd | Wholesale & retail | 2023 |
| Nanicol Limited | Extraterritorial | 2022 |
| Nano Bolt Security Ltd | Administrative & support | 2025 |
| Nanuro Ltd | Wholesale & retail | 2018 |
| Nanuro Properties Ltd | Real estate | 2024 |
| Naotokomers Ltd | Wholesale & retail | 2025 |
| Narad Medicine Management Ltd | Professional & scientific | 2026 |
| Narimaan Traders Limited | Wholesale & retail | 2024 |
| Narm Consultancy Limited | Professional & scientific | 2020 |
| NAS Group Holdings Ltd | Real estate | 2024 |
| Nascen Ltd | Wholesale & retail | 2025 |
| Nasco Security Ltd | Administrative & support | 2018 |
| Nashtel Property Services Ltd | Households | 2024 |
| Nashville Experience Ltd | Arts & recreation | 2025 |
| Naskalmik Limited | Wholesale & retail | 2014 |
| Nasnix Limited | Information & communication | 2024 |
| Naspak Homes Ltd | Real estate | 2025 |
| Nassali Care Limited | Health & social care | 2020 |
| Natashascalpspecialist Limited | Professional & scientific | 2024 |
| Nathanjonty Ltd | Information & communication | 2022 |
| Nathans & Co Ltd | Professional & scientific | 2011 |
| National Fire Damper Solutions Ltd | Construction | 2025 |
| National Home Energy Ltd | Construction | 2026 |
| National Investment Management Property Services Ltd | Real estate | 2019 |
| National Psychiatric Services Limited | Health & social care | 2024 |
| National Select Services Ltd | Construction | 2021 |
| Nationwide Extracare Services Limited | Health & social care | 2017 |
| Nationwide Living Limited | Real estate | 2023 |
| Nationwide Medical and Rehabilitation Limited | Health & social care | 2014 |
| Nationwide Telephone Assistance Limited | Information & communication | 2001 |
| Natpowa Electrics Limited | Construction | 2020 |
| Nats Care Limited | Health & social care | 2025 |
| Natsliva Ltd | Construction | 2020 |
| Natt Buildings Ltd | Construction | 2015 |
| Natural Bean Specialty Coffee Ltd | Hospitality | 2020 |
| Naturally Wooden Floors Ltd | Construction | 2025 |
| Nature's Consultancy Limited | Professional & scientific | 2018 |
| Nature-Al's Selections Ltd | Wholesale & retail | 2026 |
| Natydrylane Ltd | Other services | 2018 |
| NAV Drywall Ltd | Construction | 2025 |
| Navdeepks Ltd | Real estate | 2022 |
| Naveenamazon Ltd | Wholesale & retail | 2026 |
| Navember Group of Ltd | Professional & scientific | 2026 |
| Naverum Limited | Manufacturing | 2018 |
| NAVIGATE828 Limited | Health & social care | 2023 |
| Naviq Enterprises Ltd | Wholesale & retail | 2025 |
| Navo Private Ltd | Wholesale & retail | 2021 |