| Noah Electrics Ltd | Construction | 2021 |
| Noah Joseph Estates Ltd | Real estate | 2019 |
| Noah One Ltd | Hospitality | 2024 |
| Noarc Consultants Limited | Administrative & support | 2026 |
| Nobl Ltd | Wholesale & retail | 2026 |
| Noble Automation Limited | Manufacturing | 2023 |
| Noble Care and Consultancy Services Ltd | Education | 2024 |
| Noble Nanny Services Ltd | Health & social care | 2020 |
| Noble Trybe Ltd | Manufacturing | 2024 |
| Noble-Hives Properties Limited | Construction | 1950 |
| Noblem Limited | Professional & scientific | 2024 |
| Nodia Foods Ltd | Wholesale & retail | 2023 |
| NOE Music Community Projects CIC | Information & communication | 2025 |
| Noir Hub CIC | Information & communication | 2025 |
| Noirandblancbooth Ltd | Professional & scientific | 2024 |
| Noirez Ltd | Construction | 2026 |
| NOM NOM Enterprises Ltd | Hospitality | 2014 |
| Nomaro Ltd | Wholesale & retail | 2019 |
| Nomell Solutions LP | | 2014 |
| Nomtek Limited | Professional & scientific | 2010 |
| Nonslop Ltd | Information & communication | 2026 |
| Noodle IT Ltd | Other services | 2024 |
| Nook Property Solutions Limited | Real estate | 2025 |
| Noon's Property and Lettings Ltd | Real estate | 2025 |
| Noor AL Burraq UK Ltd | Wholesale & retail | 2025 |
| Noorae Ltd | Manufacturing | 2025 |
| Noosham Ltd | Wholesale & retail | 2025 |
| Nopetex Ltd | Wholesale & retail | 2024 |
| Noraiz Ltd | Wholesale & retail | 2026 |
| Norazeal UK Limited | Manufacturing | 2022 |
| Norbridge Recruitment Ltd | Wholesale & retail | 2026 |
| Nord Plus Ltd | Transport & logistics | 2025 |
| Nordik Limited | Manufacturing | 2016 |
| Nordley Corner Ltd | Wholesale & retail | 2021 |
| Norflo Services Ltd. | Construction | 2003 |
| Norman Commercial Solutions Limited | Administrative & support | 2016 |
| North Cross Properties Ltd. | Real estate | 1988 |
| North East Bolting Supplies Limited | Wholesale & retail | 2006 |
| North Iron Capital Ltd | Real estate | 2026 |
| North Line and West Properties Ltd | Households | 2025 |
| North Sea Opportunities Limited | Real estate | 2023 |
| North Street Sheds Limited | Manufacturing | 2013 |
| North Sun Ltd | Hospitality | 2019 |
| Northampton Leather Trade House Real Estate Limited | Professional & scientific | 2019 |
| Northbridge IT Consultancy Services Ltd | Information & communication | 2007 |
| Northern Industries UK 1 Limited | Financial services | 2019 |
| Northern Lights Coffee Shop Ltd | Wholesale & retail | 2023 |
| Northern Star OIL Services Limited | Wholesale & retail | 2025 |
| Northfield Ventures Ltd | Real estate | 2026 |
| Northgate Ellison Group Ltd | Wholesale & retail | 2026 |
| Northline Retail Ltd | Wholesale & retail | 2026 |
| Northoval Limited | Construction | 2017 |
| Northstarr Group Limited | Financial services | 2010 |
| Northstreetsocial Ltd | Financial services | 2024 |
| Northwood Wolverhampton Limited | Real estate | 2021 |
| Norton Developments Ltd | Construction | 2019 |
| Norvian Limited | Hospitality | 2026 |
| Norvik Trading Ltd | Wholesale & retail | 2026 |
| Norvion Group Ltd | Wholesale & retail | 2026 |
| Nostalgic Futures Ltd | Arts & recreation | 2026 |
| NOT on the Market Limited | Real estate | 2026 |
| NOT SO Typical Limited | Information & communication | 2025 |
| Notab Limited | Health & social care | 2023 |
| Nourify Ltd | Wholesale & retail | 2025 |
| Nouroz Trading Limited | Wholesale & retail | 2025 |
| Nova Facilities Ltd | Administrative & support | 2026 |
| Nova Group UK Asbestos Ltd | Professional & scientific | 2025 |
| Nova Nexux Ltd | Wholesale & retail | 2024 |
| Nova Printers Ltd | Administrative & support | 2026 |
| Nova Real Estate Group Limited | Real estate | 2017 |
| Nova Vehicle Solutions Limited | Wholesale & retail | 2020 |
| Novaa Marketing Ltd | Professional & scientific | 2026 |
| Novacare Health Limited | Wholesale & retail | 2024 |
| Novacore Solutions Ltd | Information & communication | 2026 |
| Novael Cosmetics Limited | Manufacturing | 2026 |
| Novafast Ltd | Information & communication | 2026 |
| Novak & Parkes Designs Ltd | Professional & scientific | 2021 |
| Novanestt Ltd | Wholesale & retail | 2026 |
| Novaoutletstore Ltd | Wholesale & retail | 2026 |
| Novara Management Services Ltd | Transport & logistics | 2018 |
| Novavia Living Limited | Real estate | 2025 |
| Novax Global Ltd | Wholesale & retail | 2026 |
| November Properties Limited | Real estate | 2026 |
| November Rain Ltd | Professional & scientific | 2025 |
| Noventra Group Ltd | Wholesale & retail | 2025 |
| Novero Health Care Ltd | Health & social care | 1984 |
| Novida Ltd | Manufacturing | 2026 |
| Noviq Ltd | Wholesale & retail | 2026 |
| Novotronix Limited | Information & communication | 2002 |
| Novtek Ltd | Information & communication | 2024 |
| Nowhan Limited | Information & communication | 2021 |
| Nowhey Ltd | Wholesale & retail | 2024 |
| Noyahyde Ltd | Wholesale & retail | 2025 |
| Nozama Ltd | Real estate | 2024 |
| NP Quantity Surveyors Limited | Professional & scientific | 2013 |
| NPC Logistics Ltd | Transport & logistics | 2006 |
| Npessolar Ltd | Construction | 2021 |
| NPH Deshore Ltd | Wholesale & retail | 2013 |
| Npsk Ltd | Health & social care | 2026 |
| Nqoba Properties Limited | Real estate | 2020 |