| Network Photo Ltd | Administrative & support | 2015 |
| Networking Norfolk Ltd | Professional & scientific | 2023 |
| Networksuk Ltd | Manufacturing | 1994 |
| Neucin Design Limited | Professional & scientific | 2017 |
| Neuro-Informed Ltd | Education | 2021 |
| Neurodiverse Brains Limited | Health & social care | 2023 |
| Neuroimaging Services Ltd | Health & social care | 2020 |
| Neurominds Support Ltd. | Administrative & support | 2012 |
| Neuron Limited | Professional & scientific | 2018 |
| Nevelux Limited | Health & social care | 2015 |
| Never Give UP Sports & Business Consultancy Services Ltd | Administrative & support | 2018 |
| Neville Engineering Ltd | Manufacturing | 2002 |
| New 168 Trading Ltd | Wholesale & retail | 2025 |
| New Adventure (Norfolk) Limited | Manufacturing | 2014 |
| New Anglia Capital Ltd | Other services | 2013 |
| New Anglia Local Enterprise Partnership Limited | Administrative & support | 2011 |
| New Birmingham Glazing Ltd | Manufacturing | 2018 |
| New Boundaries Community Services Limited | Real estate | 2003 |
| New Buckenham PUB Limited | Hospitality | 2021 |
| New Build Air Testing Limited | Construction | 2017 |
| New Chapter Capital Limited | Professional & scientific | 2025 |
| New China Limited | Hospitality | 2019 |
| New Dawn Business Solutions Ltd | Information & communication | 2024 |
| New Delhi Divan Alrewas Limited | Hospitality | 2019 |
| New Earth Bushcraft Ltd | Professional & scientific | 2017 |
| New East Theatre C.I.C. | Professional & scientific | 2014 |
| New Ebury Home Limited | Health & social care | 2024 |
| New Electric Solutions Limited | Construction | 2007 |
| New Energy Work Limited | Education | 2019 |
| New England Windows Limited | Manufacturing | 1984 |
| New England Windows Pension Trustee Limited | Professional & scientific | 1990 |
| New ERA Heating Ltd | Construction | 2025 |
| New ERA Plumbing and Heating Limited | Administrative & support | 2016 |
| New Extreme Transport Ltd | Administrative & support | 2016 |
| New Focus Health Care Ltd | Other services | 2017 |
| New Grassmere Limited | Real estate | 2017 |
| New Greek Food Ltd | Hospitality | 2024 |
| New Image Body Centre Limited | Wholesale & retail | 2025 |
| New Image Cleaning Services Ltd | Administrative & support | 2024 |
| New Image Services Limited | Wholesale & retail | 2017 |
| New Island Limited | Hospitality | 2019 |
| New Island Well Limited | Hospitality | 2020 |
| New Kashmir Delight Ltd | Hospitality | 2018 |
| New Life Property (UK) Ltd | Real estate | 2024 |
| New Moonlight Ltd | Hospitality | 2025 |
| New Mortgage Finance Limited | Financial services | 2000 |
| New Mortgage Funding Limited | Financial services | 2018 |
| New Mortgage Holdings Ltd | Financial services | 2024 |
| New Motion Productions Ltd | Information & communication | 2019 |
| New Price Plus Ltd | Wholesale & retail | 2018 |
| New Rackheath Development Consortium Limited | Construction | 1990 |
| New Road Property Services Ltd | Construction | 2021 |
| New Roots Finance Limited | Financial services | 2015 |
| New Routes Integration | Education | 2006 |
| New Spicy Ltd | Hospitality | 2019 |
| New Star Care Limited | Health & social care | 2021 |
| New Style Haircut Ltd | Other services | 2020 |
| New Welcome Takeaway Ltd | Hospitality | 2018 |
| New Woods Forestry Limited | Agriculture & fishing | 2013 |
| New Yard Limited | Hospitality | 2022 |
| New York Mushroom Coffee Club Limited | Wholesale & retail | 2025 |
| New-U Enterprises Ltd | Wholesale & retail | 2018 |
| Newall Investments Limited | Real estate | 2016 |
| Newall Property Ltd | Construction | 2013 |
| Newbold Innovations Ltd | Manufacturing | 2022 |
| Newdryve Ltd | Information & communication | 2026 |
| Newfangled Games Ltd | Information & communication | 2019 |
| Newfoundlands Holdings Ltd | Financial services | 2021 |
| Newmarket Court Management Company Limited | Households | 2006 |
| Newmarket House Healthcare Limited | Health & social care | 2014 |
| Newmarket Road Projects Ltd | Construction | 2018 |
| Newport Indian Restaurant Limited | Hospitality | 2023 |
| Newport Norse Limited | Other services | 2014 |
| Newsight Investment Solutions Ltd | Financial services | 2022 |
| Newson Property Limited | Real estate | 2009 |
| Newson Swimming Pools Limited | Administrative & support | 2002 |
| NEWSTAR116 Trading Limited | Hospitality | 2025 |
| Newton Architecture Ltd | Professional & scientific | 2020 |
| Newton Flotman Development Land Limited | Administrative & support | 2022 |
| Newton Flotman Management Company Limited | Households | 2026 |
| Newton Honda Limited | Wholesale & retail | 2007 |
| Newton Power Services Ltd | Administrative & support | 2015 |
| NEX Level Botanicals Ltd | Manufacturing | 2020 |
| Nexar IT Recruitment Limited | Administrative & support | 2026 |
| Nexashine Commercial Cleaning Ltd | Administrative & support | 2021 |
| Nexdrop Logistics Ltd | Transport & logistics | 2025 |
| Nexis Ltd | Wholesale & retail | 2016 |
| Nexis Services Ltd | Transport & logistics | 2007 |
| Nexon Air Ltd | Construction | 2025 |
| Nexovale Limited | Wholesale & retail | 2025 |
| Next Generation Heating Solutions Ltd | Professional & scientific | 2020 |
| Next Level Business Solutions Ltd | Administrative & support | 2024 |
| Next Level Flooring (Norfolk) Limited | Construction | 2021 |
| Next Level Scaffolding East Ltd | Construction | 2020 |
| Next Phase Leisure Limited | Wholesale & retail | 2021 |
| Next Step Healthcare Ltd | Health & social care | 2023 |
| Next Wave Design Ltd | Information & communication | 2026 |
| Nextcare Health Limited | Health & social care | 2022 |
| Nextgear Recruitment Limited | Administrative & support | 2026 |
| Nextgen Farm Vets Ltd | Professional & scientific | 2023 |