| Nomiki Ltd | Real estate | 2022 |
| Nominee Company Director Ltd | Professional & scientific | 2018 |
| Nominee Company Secretary Ltd | Professional & scientific | 2018 |
| Non-Stop Recycling Limited | Water & waste | 2025 |
| Nona Consulting Limited | Health & social care | 2023 |
| Nonna's (Sheffield) Limited | Hospitality | 2010 |
| Nonstop REC Limited | Information & communication | 2017 |
| Nontaines Band Ltd | Arts & recreation | 2026 |
| Noodle&Grill Limited | Hospitality | 2013 |
| Noodlee Broomhill Limited | Hospitality | 2023 |
| Noodlesta (Leeds) Limited | Hospitality | 2018 |
| Noodlesta (Sheff) Limited | Professional & scientific | 2018 |
| Noor Corporation Ltd | Wholesale & retail | 2025 |
| Noor Haus MKT Ltd | Professional & scientific | 2025 |
| Noor-E-Zaineb Trust | Other services | 2001 |
| NOOR2019 Limited | Transport & logistics | 2025 |
| Noorldeen Sabah Abdul Hussein Delivery Ltd | Transport & logistics | 2026 |
| Noose & Gibbet Limited | Hospitality | 2025 |
| Nootka Trading Ltd | Construction | 2023 |
| Nora Hospitality Ltd | Professional & scientific | 2025 |
| Norandy Services Limited | Health & social care | 2015 |
| Norbury Constructions Ltd | Construction | 2024 |
| Norcroft Green (Beighton) Management Company Limited | Households | 2005 |
| Nord Engineers Ltd | Professional & scientific | 2026 |
| Norden Vision Ltd | Wholesale & retail | 2026 |
| Nordhammer Ltd | Professional & scientific | 2023 |
| Nordic Energy Ltd | Professional & scientific | 2016 |
| Nordic Holdings Group Ltd | Financial services | 2026 |
| Norfolk Arms Property Ltd | Hospitality | 2009 |
| Norfolk Auto Repair Limited | Wholesale & retail | 2025 |
| Norfolk Bridge Management Company Limited | Extraterritorial | 2007 |
| Norfolk Bridge MOT & Service Centre Ltd | Wholesale & retail | 2016 |
| Norfolk Catching Services Ltd | Agriculture & fishing | 2018 |
| Norfolk Park (Kenninghall) Management Company Limited | Households | 2006 |
| Norfolk Park Daycare Nursery Limited | Education | 2013 |
| Norfolk Park Lessees Limited | Households | 1965 |
| Norfolk Park Management Company Limited | Households | 2003 |
| Norfolk Views Ltd | Real estate | 2018 |
| Norjen Precision Limited | Manufacturing | 2014 |
| Norking Aluminium Limited | Manufacturing | 1973 |
| Norman Global Ltd | Construction | 2023 |
| Norman Property Investments Ltd | Real estate | 2026 |
| Normanton Care Ltd | Health & social care | 2021 |
| Normanton Spring Close Freehold Company Limited | Households | 2018 |
| Normanton Springs RTM Company Limited | Households | 2015 |
| Norr Zero Ltd | Construction | 2026 |
| Norrie Waite & Slater Solicitors Limited | Professional & scientific | 2018 |
| Norris & Green Construction Limited | Construction | 2018 |
| Norrow Estates Limited | Professional & scientific | 1987 |
| Norsec Ltd | Financial services | 2020 |
| Norsec Projects Ltd | Financial services | 2025 |
| North Anston PO Ltd | Wholesale & retail | 2020 |
| North Bidco Limited | Professional & scientific | 2016 |
| North by Nature Ltd | Professional & scientific | 2025 |
| North Creative Studio Limited | Professional & scientific | 2008 |
| North Derbyshire Commercials Limited | Wholesale & retail | 2004 |
| North Derbyshire Independents Limited | Wholesale & retail | 1973 |
| North East Controls Limited | Construction | 2003 |
| North East Estate Management Ltd | Real estate | 2022 |
| North East Realisations 2025 Limited | Professional & scientific | 2020 |
| North East Support Ltd | Health & social care | 2024 |
| North Meadows Property Group Ltd | Hospitality | 2025 |
| North Midco Limited | Professional & scientific | 2016 |
| North Midland Surveys Limited | Real estate | 1996 |
| North Natural Resources Limited | Administrative & support | 2019 |
| North Norfolk Surveyors Limited | Professional & scientific | 2015 |
| North Notts Blinds (MFG) Limited | Manufacturing | 2004 |
| North Peak Limited | Professional & scientific | 2024 |
| North Point Drinks Ltd. | | 2014 |
| North Prom Limited | Hospitality | 2020 |
| North Provider ARM Limited | Health & social care | 2013 |
| North Sky Holdings Limited | Real estate | 2025 |
| North Star Computing Ltd. | Information & communication | 2013 |
| North Star Leadership Group Ltd | Administrative & support | 2025 |
| North Star Music Limited | Arts & recreation | 2014 |
| North Styling Ltd | Wholesale & retail | 2026 |
| North System Solutions Limited | Public administration | 2021 |
| North Tech Engineering Ltd | Professional & scientific | 2024 |
| North Technology Group Ltd | Information & communication | 2026 |
| Northback Productions Ltd | Information & communication | 2023 |
| Northbound Accountants Ltd | Professional & scientific | 2024 |
| Northbound Works Ltd | Construction | 2025 |
| Northcorner Capital Ltd | Real estate | 2026 |
| Northern Abseiling Ltd | Construction | 2020 |
| Northern ARB Supplies Ltd | Extraterritorial | 2010 |
| Northern Archaeological Associates Limited | Professional & scientific | 1999 |
| Northern Autosport Limited | Wholesale & retail | 2002 |
| Northern Bloke Limited | Arts & recreation | 2008 |
| Northern Burger Co Limited | Hospitality | 2024 |
| Northern Business Services Ltd | Extraterritorial | 2019 |
| Northern Care Ltd | Health & social care | 2022 |
| Northern Charter Capital Limited | Professional & scientific | 2026 |
| Northern Compliance Services Limited | Construction | 2024 |
| Northern Copiers Limited | Wholesale & retail | 2003 |
| Northern Disposition Limited | Information & communication | 2023 |
| Northern Edge Ventures Limited | Professional & scientific | 2025 |
| Northern Engineering (Sheffield) Limited | Manufacturing | 1990 |
| Northern Engineering UK Limited | Professional & scientific | 2006 |
| Northern Events Security Limited | Administrative & support | 2017 |
| Northern Fabrications Limited | Manufacturing | 2002 |