| Nexasphere Limited | Information & communication | 2023 |
| Next Left Ltd | Professional & scientific | 2021 |
| Next Level Clothing Ltd | Wholesale & retail | 2023 |
| Next Level Interiors NW Ltd | Manufacturing | 2025 |
| Nextedge Infrastructure & Cyber Solutions Ltd | Information & communication | 2026 |
| Nexum Fidelis Ltd | Wholesale & retail | 2024 |
| NG Global Medicolegal Limited | Health & social care | 2023 |
| NGR Developments Ltd | Construction | 2019 |
| Nguyen Vision Limited | Health & social care | 2016 |
| NIA Fragrances Limited | Wholesale & retail | 2015 |
| Niall Keenan Limited | Health & social care | 2018 |
| Niall Patton Ltd | Health & social care | 2019 |
| Niche Acres Group Limited | Real estate | 2024 |
| Niche Investment Management Limited | Financial services | 2022 |
| Nicholas Jones Associates Ltd | Professional & scientific | 2012 |
| Nick Moynihan Ltd. | Financial services | 2009 |
| Nick Woodcock Limited | Health & social care | 2019 |
| Nicollis Ltd | Health & social care | 2018 |
| NIK Hanson Limited | Professional & scientific | 2025 |
| Nikhil Shah Limited | Health & social care | 2016 |
| Nikkans Textile Ltd | Professional & scientific | 2025 |
| Nikki J Events Ltd | Professional & scientific | 2019 |
| Nimbus Antiques Limited | Wholesale & retail | 2009 |
| Nimbus Siphonics Ltd | Construction | 2025 |
| Ninth Life Limited | Financial services | 2022 |
| Nirvana Holdings Limited | Financial services | 2004 |
| Nitesh Patel ENT Surgery Limited | Health & social care | 2013 |
| Nithya Limited | Real estate | 2021 |
| Nivo Solutions Limited | Information & communication | 2017 |
| NJ Boxing Limited | Real estate | 2021 |
| Njih Medical Ltd | Manufacturing | 2021 |
| NK Yachts Ltd | Other services | 2025 |
| NKC Old Ltd | Construction | 2010 |
| Nkemena DEA Ltd | Administrative & support | 2016 |
| NL Elite Image Management Limited | Other services | 2024 |
| NLB Medical Ltd | Health & social care | 2025 |
| NLK Medical Limited | Health & social care | 2025 |
| Nmjk Limited | Administrative & support | 2016 |
| NO Limit Life Ltd | Wholesale & retail | 2022 |
| Noah James Design Ltd | Manufacturing | 2013 |
| Nobacco Limited | Manufacturing | 2020 |
| Noble Tuition Academy Ltd | Education | 2026 |
| Noda Vera Solutions Ltd | Real estate | 2024 |
| Nolte Kitchens Retail Limited | Construction | 2008 |
| Nolte Kitchens UK Limited | Manufacturing | 2021 |
| Nomad Software Ltd | Information & communication | 2024 |
| Nomadic Advisors Limited | Other services | 2004 |
| Nomadic Construction Wilmslow Limited | Real estate | 2019 |
| Nomadic Estates Limited | Construction | 2019 |
| Nomadic Marine Limited | Administrative & support | 2021 |
| Nomadic Projects Limited | Professional & scientific | 2009 |
| Noobon Services Ltd | Information & communication | 2023 |
| Nook and Key Escapes (Market Drayton) Limited | Real estate | 2021 |
| Nook and Key Escapes Limited | Real estate | 2020 |
| Nook and Key Holdings SPV 1 Limited | Financial services | 2017 |
| Nook Rooms Ltd | Construction | 2022 |
| Nooks Property Ltd | Real estate | 2020 |
| Norcliffe Developments Ltd | Construction | 2023 |
| Norcliffe Hall Mews Residents Association Limited | Households | 2002 |
| Norcros (Trustees) Limited | Professional & scientific | 1953 |
| Norcros Adhesives Limited | Professional & scientific | 1997 |
| Norcros Developments Limited | Professional & scientific | 1977 |
| Norcros Estates Limited | Construction | 1946 |
| Norcros Group (Holdings) Limited | Professional & scientific | 1956 |
| Norcros Group (Trustee) Limited | Financial services | 2000 |
| Norcros Group Trusteeships Limited | Professional & scientific | 1970 |
| Norcros Industry (International) Limited | Professional & scientific | 1936 |
| Norcros PLC | Professional & scientific | 1999 |
| Norcros Securities Limited | Professional & scientific | 1963 |
| Norcros Services Limited | Professional & scientific | 1995 |
| Nordbridge Advisory Ltd | Information & communication | 2025 |
| Nore Holdings Limited | Financial services | 2026 |
| Nore Ltd | Wholesale & retail | 2025 |
| Normandy Furnishings Ltd | Wholesale & retail | 2003 |
| Norris PMC Limited | Construction | 2023 |
| Norscott Holdings Ltd | Real estate | 2024 |
| North British Rheumatology Practice Limited | Health & social care | 2015 |
| North Cambs Development Limited | Construction | 1986 |
| North Wales Cardiology Limited | Health & social care | 2018 |
| North West Fleetcare Ltd. | Manufacturing | 2023 |
| Northampton HIP and Knee Clinic Limited | Health & social care | 2016 |
| Northampton Ortho Limited | Health & social care | 2019 |
| Northbank Residential Limited | Real estate | 2025 |
| Northbeam Partners Limited | Information & communication | 2025 |
| Northern Albion Limited | Wholesale & retail | 2012 |
| Northern Goshawk Limited | Health & social care | 2025 |
| Northern Point Developments Limited | Real estate | 2005 |
| Northern Recycling & Waste Limited | Water & waste | 2011 |
| Northern Soul Lacrosse Limited | Extraterritorial | 2015 |
| Northern Soul Sportswear Limited | Administrative & support | 2010 |
| Northern Valkyrie Rugby Academy Ltd | Education | 2025 |
| Northlake (Newco) 1 Limited | Real estate | 2026 |
| Northlake (Newco) 2 Limited | Real estate | 2026 |
| Northpoint Site Services Ltd | Construction | 2025 |
| Northw Trades Ltd | Construction | 2025 |
| Northward Connect Limited | Professional & scientific | 2019 |
| Northway Stays Ltd | Hospitality | 2026 |
| Northwest Eyecare Consultancy Ltd | Health & social care | 2019 |
| Norton Barrie (II) Limited | Wholesale & retail | 1985 |
| Norton Barrie Holdings Limited | Real estate | 2019 |