| National Landscapes Association Ltd | Professional & scientific | 2003 |
| Natural High Singing Events Ltd | Arts & recreation | 2026 |
| Nawfab Group Limited | Professional & scientific | 2014 |
| Nayantara Ltd | Health & social care | 2013 |
| Naylor Howell Business Services Ltd | Information & communication | 2007 |
| Nazarene Holdings Ltd | Wholesale & retail | 2026 |
| NB Sports UK Ltd | Wholesale & retail | 2012 |
| NBA Innovations Ltd | Manufacturing | 2025 |
| NBA Partners Ltd | Professional & scientific | 2024 |
| NBA Trading Ltd | Wholesale & retail | 2022 |
| Ncl-W LLP | | 2017 |
| NCR Pads Ltd | Wholesale & retail | 2012 |
| Nectarin Limited | Real estate | 2018 |
| Needham Developments Ltd | Real estate | 2026 |
| Needham Group Ltd | Financial services | 2026 |
| Needle to Thread Ltd | Manufacturing | 2024 |
| Neil Davies 4X4 Ltd | Wholesale & retail | 2019 |
| Neil France Quality Fruit & VEG Limited | Wholesale & retail | 2020 |
| Neil Morrissey Real ALE Company Ltd | Wholesale & retail | 2014 |
| Nemeton Robotics Ltd | Agriculture & fishing | 2021 |
| Nerdy Coffee Co. Ltd | Wholesale & retail | 2019 |
| Ness Strange Developments Limited | Construction | 2020 |
| Nest CUP Box Ltd | Wholesale & retail | 2026 |
| Netcora Ltd | Manufacturing | 2021 |
| Netley Classics Limited | Wholesale & retail | 2019 |
| Netley Hall Hotel Limited | Hospitality | 2020 |
| Netley Hall LLP | | 2021 |
| Netley Hatcheries Limited | Agriculture & fishing | 2023 |
| Netley Interiors Limited | Construction | 2016 |
| Netley Joinery (Shrewsbury) Limited | Manufacturing | 2012 |
| Netsource International Limited | Administrative & support | 1998 |
| Netsource Limited | Administrative & support | 1995 |
| Neville Developments Limited | Construction | 2005 |
| New Chapters Fostercare Limited | Health & social care | 2014 |
| New Developments Limited | Information & communication | 1995 |
| New Eatwise UK Limited | Hospitality | 2024 |
| New ERA Printing Limited | Manufacturing | 2019 |
| New Great Wall (Shrewsbury) Ltd | Hospitality | 2023 |
| New Heys Management Company Limited | Households | 2000 |
| New Horizons Learning Limited | Education | 2023 |
| New Reflexions Limited | Extraterritorial | 2008 |
| New Road (Great Bridge) Management Limited | Households | 2007 |
| New Walk Central Management Company Limited | Households | 2002 |
| Newbold Comyn Arms Limited | Hospitality | 2023 |
| Newbrook & Leech Ltd | Hospitality | 2014 |
| Newbury Gardens (Halesowen) Management Limited | Households | 2003 |
| Newco 2026 Limited | Extraterritorial | 2026 |
| Newcombe Farrer Holt Architecture Limited | Professional & scientific | 2022 |
| Newdawn Construction Ltd | Construction | 2012 |
| Newdawn Holdings Limited | Real estate | 2016 |
| Newgate Financial Limited | Financial services | 2020 |
| Newlands Park (Cannock) Management Limited | Households | 2005 |
| Newman Facilities Management Limited | Administrative & support | 2024 |
| Newman Group Enterprises Limited | Administrative & support | 2025 |
| Newman Landscaping Limited | Administrative & support | 2026 |
| Newnes Gardens Management Company Limited | Households | 2020 |
| Newnham Hall Farms Limited | Agriculture & fishing | 2010 |
| Newport Enterprise Centre Ltd | Real estate | 2023 |
| Newport Place Management Company Limited | Households | 2025 |
| Newstart Networks C.I.C. | Administrative & support | 2012 |
| Newton Heath Management Company Limited | Households | 2011 |
| Newton House Farm Barns Management Company Limited | Households | 2018 |
| Newtown Garage (Baschurch) Limited | Wholesale & retail | 2023 |
| Newtown Jewellers Limited | Wholesale & retail | 1980 |
| Nexa (Pinhoe) Management Company Limited | Real estate | 2023 |
| Next Gear Leasing Ltd | Financial services | 2008 |
| Next Wave Recruitment Ltd | Administrative & support | 2024 |
| NEXTDOOR17 Ltd | Hospitality | 2024 |
| Nextrouk Ltd | Information & communication | 2026 |
| Nexus Care Group Ltd | Professional & scientific | 2015 |
| Nexus Estates Ltd | Real estate | 2015 |
| Ngee Business Ltd | Hospitality | 2026 |
| NGM Residential Properties Limited | Real estate | 2024 |
| NGU Wholesale Ltd | Wholesale & retail | 2026 |
| NH Digital Consultancy Ltd | Professional & scientific | 2021 |
| NHR Heating Services Limited | Construction | 2015 |
| Niaian Investments Limited | Information & communication | 2016 |
| Niblett Ltd | Manufacturing | 2006 |
| Nice Pixels Ltd | Information & communication | 2024 |
| Nice Supplement Co Ltd | Wholesale & retail | 2023 |
| Nice&Co Limited | Other services | 2017 |
| Nicholas BOY Limited | Information & communication | 2023 |
| Nicholas R Williams Limited | Financial services | 2017 |
| Nicholson Thorpe Limited | Professional & scientific | 2005 |
| Nick Evans Development Ltd | Information & communication | 2022 |
| Nigel Farr Farm Services (Westbury) Limited | Wholesale & retail | 1982 |
| Nigel Hayman Roofing Limited | Construction | 2008 |
| Nigel Thorns Planning Consultancy Limited | Professional & scientific | 2003 |
| Nigel Tufft Legal Ltd | Health & social care | 2019 |
| Nightingale House (Aldershot) Management Co Ltd | Households | 2006 |
| Nile Delta Limited | Wholesale & retail | 2025 |
| Nile UK Service Company Limited | Financial services | 2021 |
| Nimmonet Ltd | Information & communication | 2022 |
| Nimrod Software Limited | Information & communication | 2012 |
| Nine Bridges Management Company Limited | Households | 2022 |
| Nivas Property Limited | Real estate | 2018 |
| Nixons Pet and Animal Feeds Limited | Wholesale & retail | 2003 |
| NJR Integrity Ltd | Wholesale & retail | 2026 |
| NK Building Services Ltd | Construction | 2021 |
| NO Dice Limited | Real estate | 2019 |