| NOT a K Sports Cars | | 1999 |
| Notan Integrated Blinds Ltd | Administrative & support | 2023 |
| Notley Coles Ltd | Information & communication | 2022 |
| Nottage Agriculture Limited | Agriculture & fishing | 2013 |
| Nottingham Global Academy for Training, Education and Media - UK Ltd | Professional & scientific | 2021 |
| Nottingham Road Residents Company Limited | Households | 2001 |
| Notts Inspired Limited | Information & communication | 2024 |
| Nottud Ltd | Financial services | 2018 |
| Nour Trading Limited | Wholesale & retail | 2020 |
| Noushka Properties Limited | Real estate | 2026 |
| Nouveau Interior Ensembles Ltd | Extraterritorial | 2024 |
| Nova Beam Tech Limited | Manufacturing | 2024 |
| Nova Care Group Ltd | Health & social care | 2021 |
| Nova Global Consultancy Ltd | Professional & scientific | 2023 |
| Nova Jewels Ltd | Wholesale & retail | 2024 |
| Nova Nominees Limited | Extraterritorial | 2013 |
| Nova Pixel Ltd | Information & communication | 2023 |
| Nova Scotia Tiles Limited | Wholesale & retail | 2014 |
| Nova Sphere Networks Ltd | Information & communication | 2024 |
| Nova Tech IT Limited | Information & communication | 2025 |
| Novalancer Ltd | Information & communication | 2024 |
| Novalash International Limited | Other services | 2012 |
| Novamita Care Ltd | Health & social care | 2025 |
| Novapack Supply Ltd | Administrative & support | 2025 |
| Novara Advisory Partners Limited | Administrative & support | 2026 |
| Novarise Ventures Ltd | Administrative & support | 2025 |
| Novas Pharma Limited | Manufacturing | 2025 |
| Novavita MED Ltd | Health & social care | 2025 |
| Novel Path Limited | Professional & scientific | 2025 |
| Novella Accounting Ltd | Professional & scientific | 2023 |
| Novellum Solutions Limited | Information & communication | 2024 |
| Noviche Bioscience Limited | Health & social care | 2013 |
| Novity Ltd | Construction | 2019 |
| Novonest Collective Ltd | Wholesale & retail | 2024 |
| Nowlogit.Com Limited | Information & communication | 2018 |
| Noxworks Ltd | Manufacturing | 2025 |
| NP Endo Ltd | Health & social care | 2020 |
| NP Luxe Candles Ltd | Manufacturing | 2026 |
| NP Property Holdings Ltd | Financial services | 2024 |
| NR Bespoke Brickwork Ltd | Construction | 2024 |
| NR Developments Limited | Real estate | 2020 |
| NR Technical Design Ltd | Professional & scientific | 2019 |
| NRI Contracts Ltd | Construction | 2012 |
| NS Restaurant (Stoke) Ltd | Hospitality | 2024 |
| NS Smiles Ltd | Health & social care | 2025 |
| NSL Operations Limited | Wholesale & retail | 2024 |
| Nsno Accounting Ltd | Professional & scientific | 2026 |
| NSR Frydays Limited | Hospitality | 2025 |
| NSR Transport Ltd | Transport & logistics | 2024 |
| NT Venture Limited | Health & social care | 2024 |
| NTH Degree Imaging Ltd | Administrative & support | 2008 |
| NTM Building Limited | Construction | 2019 |
| Ntsae Mabe Ltd | Health & social care | 2025 |
| Nu-Tech Heating Services Ltd | Construction | 2019 |
| Nubuild Solutions Ltd | Construction | 2025 |
| Nucleus Learning Ltd | Information & communication | 2019 |
| Nudj Limited | Information & communication | 2020 |
| Nudo Property Holdings Ltd | Real estate | 2022 |
| Nuknuk Limited | Wholesale & retail | 2024 |
| Nulla Enterprise Ltd | Construction | 2024 |
| Nullsend Ltd | Information & communication | 2026 |
| Numa by Emily Ltd | Education | 2026 |
| Number 6 Property Group Ltd | Real estate | 2019 |
| Number 62 Investments Ltd | Real estate | 2021 |
| Number 62 Ltd. | Real estate | 2021 |
| Numera Accountants Ltd | Professional & scientific | 2024 |
| Numeris 13 Ltd | Professional & scientific | 2021 |
| Nunton Plant Services Ltd | Wholesale & retail | 2017 |
| NUR Logistics Ltd | Transport & logistics | 2019 |
| NUR X Events Ltd | Wholesale & retail | 2024 |
| Nuroomz Limited | Construction | 2013 |
| Nurotec Ltd | Financial services | 2025 |
| Nursery Cover Limited | Information & communication | 2025 |
| Nurture Labs Ltd | Information & communication | 2023 |
| Nushkal Limited | Wholesale & retail | 2026 |
| Nuspace Conversions Limited | Construction | 2025 |
| Nutans Exim Limited | Wholesale & retail | 2025 |
| Nutriextracts Ltd | Wholesale & retail | 2018 |
| Nutrition Supp Limited | Wholesale & retail | 2025 |
| Nutrixcel Ltd | Hospitality | 2026 |
| Nutts About Mutts Ltd | Wholesale & retail | 2017 |
| Nuvolla GAS Services Limited | Wholesale & retail | 2014 |
| Nuvolla Limited | Wholesale & retail | 2005 |
| NV Tyres and Auto Repairs Ltd | Wholesale & retail | 2020 |
| Nvch Ltd | Health & social care | 2003 |
| NW Housing Solutions Ltd | Real estate | 2024 |
| NW3 Business Solutions Ltd | Wholesale & retail | 2015 |
| NWF GAS Heating & Plumbing Ltd | Construction | 2025 |
| NWP Holdings Ltd | Hospitality | 2023 |
| NWS Planning Limited | Administrative & support | 2025 |
| NWS Roofing & Guttering Ltd | Construction | 2026 |
| NXT GEN FC C.I.C. | Arts & recreation | 2024 |
| NXT HYP UK Limited | Administrative & support | 2020 |
| Nxtgen Careers Ltd | Education | 2025 |
| NYANGA4U Ltd | Wholesale & retail | 2023 |
| Nyansapo Solutions Ltd | Wholesale & retail | 2020 |
| Nybz Ltd | Real estate | 2022 |
| NYX Collective Records Limited | Arts & recreation | 2019 |
| NYX Logistics Ltd | Transport & logistics | 2025 |
| O a Edwards Limited | Wholesale & retail | 2009 |