| Neamul LUI Gogolan Ltd | Hospitality | 2025 |
| Nearta Ltd | Professional & scientific | 2025 |
| Neat Numbers Bookkeeping Services Limited | Professional & scientific | 2013 |
| Neaxaco Ltd | Information & communication | 2025 |
| Nebula Engineering Services Ltd | Construction | 2016 |
| Nebula Investment Properties Ltd | Real estate | 2019 |
| Necton Estates Limited | Real estate | 2017 |
| Needham Accountancy Limited | Professional & scientific | 2008 |
| Nego Electronics Solutions Ltd | Information & communication | 2024 |
| NEH Management Ltd | Construction | 2013 |
| Neil Hunter (Editing) Limited | Information & communication | 2006 |
| Neil Lowes Drainage Limited | Construction | 2011 |
| Neklar Trading Corporation Ltd | Manufacturing | 2021 |
| Nell Development Group Ltd | Construction | 2024 |
| Nemisis Developments Limited | Construction | 2003 |
| NEO Kuma SPV V Tripp LLP | | 2022 |
| NEO Kuma SPV VI Kanna LLP | | 2022 |
| NEO Mgmt Ltd | Professional & scientific | 2020 |
| Neob Secondary SPV LLP | | 2021 |
| Neobnk FI 1 LLP | | 2021 |
| Neocloud Technologies Ltd | Information & communication | 2025 |
| Neomari Creative Sector Services Ltd | Administrative & support | 2004 |
| Neon Octopus LLP | | 2026 |
| Neptune-One Property Investment Limited | Real estate | 2016 |
| Neracon Ltd | Professional & scientific | 2018 |
| NES Food Ltd | Hospitality | 2025 |
| Nestra Group Ltd | Wholesale & retail | 2025 |
| NET Investments Ltd | Real estate | 2012 |
| NETBALL4FUN Ltd | Education | 2023 |
| Nether Dutton Hydro Limited | Construction | 2016 |
| Nether Edge Consulting Limited | Professional & scientific | 2025 |
| Netricus Limited | Information & communication | 2023 |
| Neubla UK Ltd | Information & communication | 2021 |
| Neuro Aware Sports Ltd | Education | 2026 |
| Neutral Digital Limited | Information & communication | 2012 |
| Nevero Ltd | Manufacturing | 2023 |
| New 191-193 Mount Pleasant Lane Management Ltd | Households | 2006 |
| New Beginning Care Limited | Health & social care | 2022 |
| New Broadway Apartments Management Company Limited | Households | 2006 |
| New Direction Finance Nominees Limited | Professional & scientific | 1994 |
| New East Island Ltd | Real estate | 2021 |
| New Europe Personnel Limited | Professional & scientific | 2003 |
| New Forest Print Finishing Ltd | Manufacturing | 2019 |
| New Form Landscapes Limited | Administrative & support | 2012 |
| New Generation Media Limited | Professional & scientific | 2020 |
| New Heights Inc Ltd | Financial services | 2024 |
| New Horizon Enterprises London Limited | Real estate | 2024 |
| New Horizons in Science Ltd | Professional & scientific | 2014 |
| New Leaf Garden Specialists Ltd | Administrative & support | 2022 |
| New Markyate Spice Limited | Hospitality | 2024 |
| New Wave Capital Nominees Limited | Financial services | 2023 |
| New Wave Investments Limited | Real estate | 2000 |
| New World Loyalty (Europe) Ltd | Wholesale & retail | 2016 |
| Newbrick Group 4 Ltd | Professional & scientific | 2022 |
| Newbrick Group 8 Limited | Professional & scientific | 2022 |
| Newbrick Group Limited | Professional & scientific | 2023 |
| Newbuss Property Limited | Real estate | 2018 |
| Newcomb Ltd | Professional & scientific | 2019 |
| Newman Morris Limited | Professional & scientific | 2004 |
| Newmarket Court RTM Company Limited | Households | 2005 |
| News Wrap UK Limited | Real estate | 2003 |
| Newton Green Consulting Limited | Professional & scientific | 2011 |
| Nexance Ltd. | Professional & scientific | 2000 |
| Next Generation 4X4 Limited | Information & communication | 2013 |
| Nextkarting Ltd | Wholesale & retail | 2017 |
| Nexus Industries Group Ltd | Professional & scientific | 2025 |
| NGU Management Services Limited | Health & social care | 2016 |
| NH Media Services Ltd | Information & communication | 2005 |
| NHJ Studios Ltd | Education | 2025 |
| NIC Morgan Ltd | Information & communication | 2008 |
| Niche Gardening Tool Hire Ltd | Wholesale & retail | 2012 |
| Nicholas Bradbury Ltd | Professional & scientific | 2024 |
| Nicholas Freilich Cycling Ltd | Wholesale & retail | 2013 |
| Nicholas Property Limited | Real estate | 2024 |
| Nicholas Walton Design Limited | Professional & scientific | 2017 |
| Nicholson Park Limited | Real estate | 2021 |
| Nick Doyle Property Consultants Ltd | Real estate | 2020 |
| Nick Sherwood Design Limited | Professional & scientific | 2011 |
| Nick Turner Management Limited | Professional & scientific | 2016 |
| Nigel Keogh Consulting Ltd | Professional & scientific | 2019 |
| Night Owls Investors LLP | | 2021 |
| Nightcast Lighting Ltd | Wholesale & retail | 2023 |
| NIK Marble Ltd | Manufacturing | 2023 |
| NIK Transport Ltd | Transport & logistics | 2026 |
| Nikola MCC SPV1 LLP | | 2024 |
| Nikola MCC SPV2 LLP | | 2024 |
| Nikola MCC SPV3 LLP | | 2024 |
| Nikola MCC SPV4 LLP | | 2024 |
| Nileur Ltd | Arts & recreation | 2021 |
| Nimbus Consultancy Services Ltd | Professional & scientific | 2021 |
| Nimbus Emporium Ltd | Wholesale & retail | 2023 |
| Nimontron Limited | Hospitality | 2016 |
| NIMUL2 Limited | Professional & scientific | 2024 |
| Nine Arch Construction Ltd | Professional & scientific | 2021 |
| Nineteen GC Ltd | Arts & recreation | 2024 |
| Ninja Wabbit Ltd | Information & communication | 2014 |
| Nipkart Ltd | Transport & logistics | 2025 |
| Nipuna Solutions Ltd | Information & communication | 2011 |
| Nisquare Ltd | Information & communication | 2025 |
| NJ Case Management Ltd | Health & social care | 2021 |