| Nexgen Management Services Limited | Professional & scientific | 2021 |
| Nexgen Thermal Ltd | Administrative & support | 2026 |
| Nexime Healthcare Ltd | Professional & scientific | 2017 |
| Nexime Homes Ltd | Health & social care | 2025 |
| Nexime Properties Ltd | Real estate | 2024 |
| Nexops Ltd | Administrative & support | 2025 |
| Nexshopper Ltd | Wholesale & retail | 2025 |
| Next Big Thing Storage Limited | Transport & logistics | 2025 |
| Next Chapter Bibliotherapy Ltd | Information & communication | 2024 |
| Next Day Trade Limited | Wholesale & retail | 2025 |
| Next Level Civil Engineering Ltd | Professional & scientific | 2023 |
| Next Level Construction & Building Ltd | Construction | 2018 |
| Next Level Sealants Ltd | Construction | 2024 |
| Next Move 4 UK Limited | Transport & logistics | 2025 |
| Next Phase Electrical Eco & Domestic Solutions Ltd | Construction | 2026 |
| Next Step Financial Planning Ltd | Financial services | 2026 |
| Next Step Group Inc Ltd | Administrative & support | 2025 |
| Next Step Liverpool CIC | Health & social care | 2026 |
| Next Step Mobility Group Limited | Professional & scientific | 2026 |
| Next Steps Community Nursery CIC | Education | 2011 |
| Nextdayuk Ltd | Wholesale & retail | 2026 |
| Nextdom Atlas Limited | Real estate | 2016 |
| Nextdom Donnard Limited | Real estate | 2016 |
| Nextdom Helena Limited | Real estate | 2016 |
| Nextdom Holding Limited | Real estate | 2016 |
| Nextdom Parks 2 Limited | Administrative & support | 2020 |
| Nextdom Parks 3 Limited | Administrative & support | 2020 |
| Nextdom Parks Limited | Administrative & support | 2020 |
| Nextdom Property Limited | Real estate | 2016 |
| Nextdom Roscoe Limited | Real estate | 2016 |
| Nextformat Ltd | Health & social care | 2024 |
| Nextgen Fabrications Ltd | Construction | 2016 |
| Nextgen Hearing Ltd | Health & social care | 2025 |
| Nextgen Liverpool Ltd | Wholesale & retail | 2021 |
| Nextgen Proplayer Ltd | Education | 2024 |
| Nextgen Sales Consulting Ltd | Professional & scientific | 2025 |
| Nextgen Ventures Ltd | Administrative & support | 2020 |
| Nextheory Group Ltd | Construction | 2026 |
| Nextlevel Esports & Gaming Limited | Education | 2025 |
| Nextlife Events Limited | Arts & recreation | 2026 |
| Nextphase Electrical & Renewables Ltd | Construction | 2020 |
| Nextsense Ltd | Wholesale & retail | 2026 |
| Nexura Windows and Doors Ltd | Extraterritorial | 2025 |
| Nexus 6 Engineering Limited | Construction | 2004 |
| Nexus Arena Ltd | Professional & scientific | 2021 |
| Nexus Financial (UK) Ltd | Financial services | 2014 |
| Nexus Fire & Security Services Limited | Construction | 2018 |
| Nexus Livings Ltd | Real estate | 2015 |
| Nexus UK Trading Ltd | Wholesale & retail | 2022 |
| Neyo Worldwide Ltd | Wholesale & retail | 2025 |
| Nezami Transport Ltd | Transport & logistics | 2025 |
| NFB Limited | Households | 2025 |
| NFM Trading Limited | Wholesale & retail | 2021 |
| Nfnw Ltd | Other services | 2018 |
| NFT Group Ltd | Wholesale & retail | 2024 |
| NG Solomon UK Limited | Real estate | 2020 |
| NG Watch Co Limited | Other services | 2025 |
| NG3 Consultancy Limited | Administrative & support | 2024 |
| NGB Property Holdings Ltd | Real estate | 2020 |
| NGC Europe Limited | Information & communication | 2010 |
| NGC Overseas Holdings Limited | Information & communication | 1998 |
| NGC UK Holdings Company Limited | Information & communication | 2007 |
| NGF Developments Ltd | Real estate | 2023 |
| Ngfg Ltd | Real estate | 2024 |
| Ngin Ltd | Administrative & support | 2025 |
| NGL Finance Ltd | Professional & scientific | 2025 |
| NGS Accountancy Limited | Professional & scientific | 2012 |
| NGS Building Materials Ltd | Wholesale & retail | 2024 |
| NGS Financial Consulting Ltd | Professional & scientific | 2020 |
| NGS Halal Meat Ltd | Wholesale & retail | 2025 |
| Ngup Active Limited | Arts & recreation | 2021 |
| NH Haydock Ltd | Hospitality | 2025 |
| NH Liverpool Ltd | Other services | 2017 |
| NH Media Ltd | Real estate | 2025 |
| NH Safety Solutions Ltd | Health & social care | 2024 |
| NH65 Consultancy Limited | Professional & scientific | 2026 |
| Nham Trading Limited | Wholesale & retail | 2025 |
| Nhcv Holdings Limited | Wholesale & retail | 2025 |
| NHK 22 Limited | Hospitality | 2025 |
| NI HAO China Ltd. | Education | 2012 |
| Niaa Properties Limited | Real estate | 2022 |
| Niagara Integrated Services Ltd | Construction | 2025 |
| Niall Burns Photography Ltd | Professional & scientific | 2022 |
| NIB Education Ltd | Education | 2018 |
| NIB Rail Limited | Administrative & support | 2014 |
| Nibble and SIP Liverpool Ltd | Hospitality | 2025 |
| Nibras for Study Services Ltd | Education | 2022 |
| Nibrasco Ltd | Real estate | 2020 |
| NIC Neal Consultancy Ltd | Administrative & support | 2023 |
| NIC Solli Ltd | Manufacturing | 2021 |
| Nice and Cosy Ltd | Construction | 2024 |
| Nicetofilmyou Ltd | Information & communication | 2025 |
| Niche Cruises Limited | Administrative & support | 2017 |
| Niche Getaways Limited | Administrative & support | 2025 |
| Niche Procurement Limited | Professional & scientific | 2016 |
| Niche Sport Media Ltd | Information & communication | 2013 |
| Niche Travel Limited | Administrative & support | 2023 |
| Niche Video Content Limited | Information & communication | 2026 |
| Nicholas Construct Ltd | Construction | 2024 |
| Nicholas House RTM Company Limited | Households | 2010 |