| Nakarut Limited | Health & social care | 2022 |
| Nakshatra Retail Limited | Wholesale & retail | 2025 |
| Nakshi Private Ltd | Transport & logistics | 2018 |
| Nalla Sales Ltd | Wholesale & retail | 2018 |
| NAM Trade UK Ltd | Wholesale & retail | 2019 |
| NAM Travel & Tours Limited | Transport & logistics | 1998 |
| Namaste Nanny Ltd | Wholesale & retail | 2023 |
| Nambalirwa Ltd | Health & social care | 2026 |
| Nameesexecutiveservices Ltd | Transport & logistics | 2023 |
| Namenayou Recovery Ltd | Wholesale & retail | 2026 |
| Namow Nation Limited | Administrative & support | 2026 |
| Nana Dolls Ltd | Manufacturing | 2021 |
| Nana Empire Limited | Real estate | 2021 |
| Nana's Property Services Limited | Real estate | 2022 |
| Nanain International Ltd | Professional & scientific | 2024 |
| Nanarch Flat Management Company Limited | Households | 1979 |
| Nandan Solutions Ltd | Professional & scientific | 2012 |
| Nandanhomes Ltd | Real estate | 2017 |
| Nandha Villas PVT Ltd | Hospitality | 2025 |
| Nandina Healthcare Ltd | Health & social care | 2020 |
| Nandyal Consultancy Ltd | Information & communication | 2017 |
| Nano Trader Limited | Real estate | 2018 |
| Nanode Ventures Limited | Professional & scientific | 2015 |
| Nanolinks UK Ltd | Health & social care | 2013 |
| Nant Y Coed Management Company Limited | Households | 2007 |
| Naomi Wilson Ltd | Wholesale & retail | 2025 |
| NAP Stores Limited | Wholesale & retail | 2004 |
| Napier Arms Limited | Hospitality | 2011 |
| Napier Trading Limited | Households | 1988 |
| Napss Entertainment Limited | Hospitality | 2017 |
| Napss Living Ltd | Real estate | 2017 |
| NAR Foods 2023 Ltd | Wholesale & retail | 2023 |
| Nardior Ltd | Other services | 2021 |
| Nardo Motorsport Limited | Arts & recreation | 2020 |
| Narravo Limited | Real estate | 2023 |
| Nasbic Group Ltd | Wholesale & retail | 2023 |
| Nasdon Limited | Real estate | 2013 |
| Naseem Niazi Limited | Wholesale & retail | 2024 |
| Nashat | Wholesale & retail | 2019 |
| Nashmita Rajiah Limited | Professional & scientific | 2023 |
| Nasim Salon Limited | Other services | 2014 |
| Nasmun Dynamics Limited | Health & social care | 2025 |
| Nasri Services Limited | Other services | 2023 |
| Nat-Q Limited | Wholesale & retail | 2023 |
| Natalie Naturally LLP | | 2018 |
| Natasha Hulse Design Limited | Professional & scientific | 2020 |
| Natasha Traders Ltd | Hospitality | 2024 |
| Nathan Maknight Company Secretarial Limited | Professional & scientific | 2000 |
| Nathans Driving Services Limited | Administrative & support | 2025 |
| National Auto Centre Limited | Wholesale & retail | 2019 |
| National Stables Limited | Extraterritorial | 2015 |
| National Vaulting Services Ltd | Information & communication | 2014 |
| Nationwide Cleaning & Support Services Ltd | Administrative & support | 2000 |
| Native in ME Ltd | Wholesale & retail | 2016 |
| Nativeharvest Ltd | Wholesale & retail | 2026 |
| Natmich Asset Management Limited | Real estate | 2025 |
| Natof Ltd | Transport & logistics | 2023 |
| Natraj Construction Ltd | Construction | 2019 |
| Natsav Limited | Administrative & support | 2022 |
| Naturaah Limited | Manufacturing | 2025 |
| Natural Bites Ltd | Wholesale & retail | 2025 |
| Natural Ground Limited | Health & social care | 2010 |
| Natural Health Harmony Group Ltd | Manufacturing | 2018 |
| Natural Homeopathic Products Limited | Other services | 2011 |
| Natural Leaf Ltd | Wholesale & retail | 2018 |
| Natural Shadows Limited | Manufacturing | 2017 |
| Naturali International Ltd | Wholesale & retail | 2019 |
| Nature Glow Ltd | Wholesale & retail | 2010 |
| Nature Touch Limited | Other services | 2026 |
| Natured UP Limited | Hospitality | 2020 |
| Naturel Beauty Limited | Other services | 2013 |
| Naturel Nails Limited | Other services | 2018 |
| Natures Scientific Limited | Agriculture & fishing | 2018 |
| Naturesync Ltd | Wholesale & retail | 2022 |
| Naturre Green Ltd | Wholesale & retail | 2026 |
| Naughty Thoughts Ltd | Wholesale & retail | 2023 |
| NAV Financial Services (UK) Limited | Financial services | 2012 |
| NAV Retailers Limited | Wholesale & retail | 2025 |
| Naval Building Limited | Real estate | 2022 |
| Navaratna South Indian Restaurant Limited | Wholesale & retail | 2018 |
| Navdor Enterprise Ltd | Transport & logistics | 2021 |
| Naveau Service Ltd | Water & waste | 2019 |
| Navebury Limited | Households | 1975 |
| Naveenkumar Ganesan Limited | Information & communication | 2025 |
| Naver Line UK Ltd | Transport & logistics | 2025 |
| Navin Investments Limited | Real estate | 2014 |
| NAVIN1 Ltd | Extraterritorial | 2024 |
| Navis Container Line UK Ltd | Transport & logistics | 2022 |
| Navisha Technologies Limited | Information & communication | 2023 |
| Navrajaz & Co Ltd | Real estate | 2016 |
| Naylor Road LLP | | 2025 |
| Naylou Holistics CIC | Other services | 2026 |
| Nazirashop Ltd | Wholesale & retail | 2025 |
| NB Evoke Group Ltd | Financial services | 2023 |
| NBC Distribution Limited | Wholesale & retail | 2010 |
| NBL Accommodations PVT Ltd | Real estate | 2023 |
| NBR FUD Ltd | Wholesale & retail | 2026 |
| NBS Pharma Consultancy Limited | Health & social care | 2016 |
| NBS Property Management & Maintenance Limited | Real estate | 2022 |
| Nbshah Ltd | Real estate | 2025 |