| Mytra Investments Limited | Real estate | 2025 |
| MZA Label Ltd | Wholesale & retail | 2022 |
| MZM Transport Ltd | Extraterritorial | 2015 |
| N a Ibrahim Ltd | Health & social care | 2023 |
| N Salhan Ltd | Health & social care | 2024 |
| N Smith Events Services Ltd | Wholesale & retail | 2025 |
| N Tandon Group Ltd | Manufacturing | 2020 |
| N&A Transportation Ltd | Wholesale & retail | 2021 |
| N&C Property Limited | Real estate | 2023 |
| N&N Support Group Limited | Real estate | 2020 |
| N&T Public House Management Ltd | Hospitality | 2022 |
| N4C Ltd | Administrative & support | 2025 |
| Nabest Ltd | Administrative & support | 2023 |
| Nachural Music Limited | Information & communication | 2002 |
| Nachural Publishing Limited | Extraterritorial | 2002 |
| Nader & Son's Transport Services Ltd | Transport & logistics | 2020 |
| Nagra Logistics Ltd | Transport & logistics | 2021 |
| Nagra Photography Ltd | Information & communication | 2025 |
| Najran Direct Building and Fencing Supplies Ltd | Wholesale & retail | 2019 |
| Nalini Food PVT Limited | Wholesale & retail | 2024 |
| Nanak Shahi DAK Couriers Ltd | Transport & logistics | 2026 |
| Nankee Recruitment Ltd | Administrative & support | 2022 |
| National Accommodation Group Ltd | Real estate | 2026 |
| National Property Deals Ltd | Real estate | 2024 |
| National Temping Recruitment Ltd | Administrative & support | 2016 |
| Nationwide Legal Claims Limited | Information & communication | 2022 |
| Natural Delicacies Ltd | Manufacturing | 2025 |
| Natural Greek Restaurant Ltd | Hospitality | 2024 |
| NATURALTASTE1 Ltd | Hospitality | 2025 |
| NAU Nidh Construction Ltd | Construction | 2026 |
| Navjeet Kaur Health Ltd | Health & social care | 2020 |
| Navrutt Kaur Ltd | Transport & logistics | 2024 |
| Nawaie Trading Limited | Wholesale & retail | 2015 |
| NB Entertainment Ltd | Arts & recreation | 2022 |
| NDH Care (Leicester) Ltd | Administrative & support | 2020 |
| NDH Cleaning Ltd. | Administrative & support | 2017 |
| NDH Cornwall Ltd | Wholesale & retail | 2025 |
| NDH Darlington Ltd | Wholesale & retail | 2025 |
| NDH Recycling Ltd | Wholesale & retail | 2025 |
| NDS Driving School Ltd | Education | 2026 |
| Neat Group 2020 Ltd | Wholesale & retail | 2020 |
| Neatmove Ltd | Transport & logistics | 2026 |
| Nebi Construction Limited | Construction | 2026 |
| Negin Clinic Ltd | Other services | 2025 |
| NEO Marketing Solutions Ltd | Administrative & support | 2019 |
| Neozen Venture Capital Limited | Construction | 2016 |
| Neptune Health Ltd | Health & social care | 2020 |
| Nero Midlands Limited | Professional & scientific | 2014 |
| Nero Pipeline Connections Limited | Wholesale & retail | 1992 |
| Nesto Properties Ltd | Real estate | 2026 |
| Neuralpha Ltd | Information & communication | 2026 |
| Neville HAY Holdings Limited | Information & communication | 2018 |
| Neville HAY Limited | Arts & recreation | 1921 |
| Neville HAY Productions Limited | Arts & recreation | 2019 |
| New Dawn Care Solutions Limited | Other services | 2019 |
| New England Associates LLP | | 2011 |
| New England Engineering Limited | Manufacturing | 1970 |
| New England Engineering Services Limited | Professional & scientific | 1982 |
| New England Trading Limited | Administrative & support | 2006 |
| New Hampshire Leisure Ltd | Hospitality | 2017 |
| New Hope Care Ltd | Health & social care | 2015 |
| New JLM Ltd | Wholesale & retail | 2023 |
| New Journey Ltd | Professional & scientific | 2019 |
| New Life Home Improvements Ltd | Construction | 2020 |
| New Oceana Fish Bar Ltd | Hospitality | 2025 |
| New Oscott Car Wash Limited | Administrative & support | 2021 |
| Newbricks Investments Ltd | Administrative & support | 2019 |
| Newbury Fish Bar Ltd | Hospitality | 2025 |
| Newbury Manor Limited | Health & social care | 2022 |
| Newbury Transport Limited | Transport & logistics | 2020 |
| Newco Advisors Limited | Financial services | 2025 |
| Newlegacee Ltd | Real estate | 2026 |
| Nexacare Training Solutions Ltd | Education | 2026 |
| Nexage Arena Limited | Information & communication | 2024 |
| Nexbuild Construction Ltd | Construction | 2025 |
| Nexgen Vehicles Ltd | Administrative & support | 2024 |
| Next Car & Van Rental Limited | Administrative & support | 2002 |
| Next Dream Ltd | Wholesale & retail | 2025 |
| Nextforge Limited | Information & communication | 2025 |
| Nextgen Wooden Pallets and Plastic Crates Ltd | Transport & logistics | 2026 |
| Nexus Infinite Limited | Information & communication | 2024 |
| Nexus Lands Limited | Real estate | 2025 |
| Nfhf Ltd | Real estate | 2026 |
| NGD Transport Ltd | Transport & logistics | 2018 |
| NGU Transport Ltd | Transport & logistics | 2024 |
| Nibaraa Limited | Wholesale & retail | 2024 |
| Nick Builders Limited | Construction | 2011 |
| Nick Contractors Ltd | Construction | 2022 |
| Nick Houses Ltd | Real estate | 2020 |
| Nick Transport U.K. Ltd | Transport & logistics | 2026 |
| Nicolaedcarpin Limited | Construction | 2018 |
| Nicu 4 Trans Limited | Transport & logistics | 2021 |
| Nightlines Films Ltd | Information & communication | 2024 |
| Nijjar Projects Ltd | Construction | 2025 |
| Nijjer Logistics Ltd | Transport & logistics | 2026 |
| Nijjer Transport Ltd | Transport & logistics | 2021 |
| Nikki's Little Hoppers Ltd | Health & social care | 2024 |
| Niko Electrical Ltd | Construction | 2022 |
| Niko GRC Limited | Construction | 2023 |
| Nikomar Trans Limited | Transport & logistics | 2019 |