| Next Generation Property Ltd | Real estate | 2026 |
| Next Level Business Coaching Ltd | Administrative & support | 2018 |
| Next Move Property Sourcing Ltd | Financial services | 2025 |
| Next Phase Electrical Solutions Limited | Construction | 2026 |
| Next Phase Renewable Ltd | Administrative & support | 2025 |
| Next Playy CIC | Arts & recreation | 2025 |
| Nextgen Business Support Services Ltd | Administrative & support | 2024 |
| Nextgen Fire Protection Limited | Public administration | 2024 |
| Nextgen Kidswear Ltd | Wholesale & retail | 2026 |
| Nextgen Market Ltd | Wholesale & retail | 2024 |
| Nexum Payroll Solutions Limited | Professional & scientific | 2025 |
| Nexus Bathrooms Ltd | Construction | 2022 |
| Nexus Global Motors Ltd | Wholesale & retail | 2026 |
| Nexus Group Investments Ltd | Financial services | 2025 |
| Nexus OP Distribution Ltd | Wholesale & retail | 2025 |
| Nexus Steel Ltd | Manufacturing | 2025 |
| NG Healthcare Limited | Financial services | 2010 |
| Nghc Group Limited | Financial services | 2012 |
| NGL Technology Ltd | Information & communication | 2020 |
| NGM Transport Ltd | Transport & logistics | 2020 |
| NGT Neuro Ltd | Health & social care | 2014 |
| Niagra Balti Ltd | Hospitality | 2019 |
| Nibek Limited | Manufacturing | 1991 |
| Nibek Manufacturing Limited | Extraterritorial | 2012 |
| Nice Abode (Staffs) Ltd | Construction | 2022 |
| Nice Abode Ltd | Construction | 2022 |
| Nice Media Limited | Information & communication | 2003 |
| Nicefind Distribution Ltd | Wholesale & retail | 2024 |
| Nicholas Oakwell Group Limited | Financial services | 2023 |
| Nicholas Oakwell Holdings Limited | Manufacturing | 2014 |
| Nick AJ Smith Consulting Limited | Professional & scientific | 2017 |
| Nick Barry Ltd | Transport & logistics | 2020 |
| Nicola Byatt Hairdressing Limited | Other services | 2016 |
| Nicolae.Nikltd Ltd | Transport & logistics | 2025 |
| Nicole 566 Limited | Wholesale & retail | 2026 |
| Nicoleni & Sons Limited | Real estate | 2024 |
| Nicoshop Ltd | Wholesale & retail | 2026 |
| Nicvante Corp UK Ltd | Construction | 2022 |
| Nidar Global Kitchen & PUB Limited | Hospitality | 2025 |
| Nielsen Mcallister Public Relations Limited | Administrative & support | 2007 |
| Niftim Ltd | Administrative & support | 2025 |
| Night and Day Stoke Limited | Health & social care | 2025 |
| Night Terrors Limited | Hospitality | 2022 |
| Nightingale & Sons Limited | Arts & recreation | 2022 |
| Nightingale Capital Limited | Real estate | 2010 |
| Nightingale Consulting Limited | Professional & scientific | 2010 |
| Nightingale Group Limited | Health & social care | 1987 |
| Nightmare Nexus Ltd | Information & communication | 2025 |
| Nightmark Protective Services Ltd | Administrative & support | 2026 |
| Nightmark Technical Solutions Ltd | Administrative & support | 2026 |
| Nikelab Ltd | Wholesale & retail | 2026 |
| Nikki Ratcliffe Ltd | Professional & scientific | 2025 |
| NIKO2 Ltd | Transport & logistics | 2023 |
| Nikoten Ltd | Hospitality | 2024 |
| Nikura Hair Ltd | Other services | 2024 |
| Nimbus Goods Ltd | Wholesale & retail | 2025 |
| Nimue Aesthetics Limited | Other services | 2025 |
| Ninac Ltd | Manufacturing | 2024 |
| Nine Horizons Ltd | Information & communication | 2014 |
| Ninetysix Interiors Ltd | Professional & scientific | 2024 |
| Nitimini II Limited | Professional & scientific | 2020 |
| Nitor Lean and Agile Consulting Limited | Professional & scientific | 2015 |
| Nixcon Technology Solutions Ltd | Construction | 2025 |
| Nixon Group Limited | Financial services | 2018 |
| Nixon Redstone Sustainable Futures Limited | Construction | 2011 |
| Nizhoni Ltd | Wholesale & retail | 2026 |
| NJ North Properties Ltd | Real estate | 2025 |
| NJ Renovations Limited | Real estate | 2024 |
| NJC ENG Ltd | Professional & scientific | 2019 |
| NJG Personnel Limited | Professional & scientific | 2014 |
| Njld Ltd | Wholesale & retail | 2025 |
| NJS Electrical Solutions Limited | Construction | 2026 |
| NK & Beyond Missions International | Health & social care | 2008 |
| NK Originals Ltd | Arts & recreation | 2010 |
| NK Stoke Trading Ltd | Wholesale & retail | 2024 |
| NLC Facilities Limited | Administrative & support | 2014 |
| Nlime Limited | Information & communication | 2024 |
| NLS 2021 Limited | Administrative & support | 2021 |
| NM Traders Stoke Ltd | Wholesale & retail | 2026 |
| NMF Plumbing Services Ltd | Construction | 2025 |
| NMH IT Services Ltd | Information & communication | 2010 |
| Nmtm Properties Limited | Real estate | 2024 |
| NN Intelligence Ltd | Transport & logistics | 2025 |
| Nnavazi Ltd | Real estate | 2026 |
| NNK Holdings Limited | Financial services | 2018 |
| NO Branding Limited | Professional & scientific | 2018 |
| NO Filter Lighting Ltd | Construction | 2024 |
| NO Where to Hide Ltd | Wholesale & retail | 2026 |
| NO.1 Aesthetics Clinic Ltd | Other services | 2022 |
| NO.1 Aesthetics Ltd | Other services | 2020 |
| NO.41 Milton Limited | Hospitality | 2016 |
| NO1 Fleet Wash Ltd | Administrative & support | 2026 |
| NOAH2022 Ltd | Wholesale & retail | 2024 |
| Noatradingco Ltd | Wholesale & retail | 2025 |
| Noble Care Assist Ltd | Health & social care | 2023 |
| Noble Carpets Limited | Wholesale & retail | 2012 |
| Noble Legion Group Ltd | Arts & recreation | 2025 |
| NOEARO75 Ltd | Transport & logistics | 2019 |
| Nogier Holdings Limited | Other services | 2016 |
| Noissim Ltd | Arts & recreation | 2020 |