| Nomad Renovations Limited | Real estate | 2016 |
| Nomad's Journeysnest Limited | Information & communication | 2024 |
| Nomads Delivery Ltd | Manufacturing | 2018 |
| Nomads Group Ltd | Real estate | 2019 |
| Nomads Necessities Ltd | Wholesale & retail | 2023 |
| Nomalise Ltd | Wholesale & retail | 2024 |
| Nomalpixel UK Ltd | Wholesale & retail | 2025 |
| Nomi Properties Limited | Real estate | 2025 |
| Nomial Holding PC | | 2017 |
| Nomiirix Ltd | Information & communication | 2025 |
| Nominee Solutions Limited | Extraterritorial | 2014 |
| Nomurex Ltd | Education | 2025 |
| NON Lethal Training Ltd | Wholesale & retail | 2023 |
| Nonar Collections Ltd | Wholesale & retail | 2023 |
| Nongnapat SAO Group Limited | Health & social care | 2016 |
| Nonilliard Ltd | Information & communication | 2025 |
| Nook Supply Trading Ltd | Wholesale & retail | 2025 |
| Noon Inc Ltd | Wholesale & retail | 2021 |
| Noonesim Ltd | Wholesale & retail | 2025 |
| Nooolimit | Administrative & support | 2024 |
| Noor Catering Services Ltd | Hospitality | 2023 |
| Noor Coffee Ltd | Wholesale & retail | 2026 |
| Noor Enterpises Limited | Extraterritorial | 2026 |
| Noor Journey Limited | Administrative & support | 2015 |
| Noor Najd Group Ltd | Hospitality | 2022 |
| Noor Trades Ltd | Administrative & support | 2025 |
| Nooraholdings Ltd | Wholesale & retail | 2025 |
| Noorain Auto Services Ltd | Administrative & support | 2023 |
| Noordvue LAB Ltd | Information & communication | 2025 |
| Noori AB Limited | Transport & logistics | 2012 |
| Noorology MSK & Wellness Ltd | Health & social care | 2025 |
| Nooruihada Trading Limited | Wholesale & retail | 2025 |
| Noorya Ltd | Wholesale & retail | 2025 |
| Nora Pearl Jewellery Ltd | Wholesale & retail | 2024 |
| Noray Ltd | Information & communication | 2023 |
| Norby Bitt Ltd | Professional & scientific | 2026 |
| Nordeko Business PC | | 2020 |
| Nordiana Consult Limited | Administrative & support | 2018 |
| Nordic Traffic Group Ltd | Wholesale & retail | 2021 |
| Nordic-C-Uk Ltd | Manufacturing | 2018 |
| Nordication Ltd | Wholesale & retail | 2026 |
| Nordland Trans PC | | 2019 |
| Nords Construction Ltd | Construction | 2020 |
| Nordvara Limited | Other services | 2025 |
| Noreenzahoor Trading Limited | Wholesale & retail | 2025 |
| Norens Limited | Health & social care | 2001 |
| Norfabs Limited | Manufacturing | 2014 |
| Norfield Healthcare Limited | Health & social care | 2018 |
| Norfolk Dog's Day Inn Ltd | Other services | 2018 |
| Norfolk Local Ltd | Wholesale & retail | 2026 |
| Norgbass UK Hub Ltd | Education | 2025 |
| Norilo Ltd | Information & communication | 2014 |
| Norka Limited | Other services | 2021 |
| Norkus Holdings Limited | Professional & scientific | 2025 |
| Norlek Property Management Ltd | Households | 2020 |
| Norm Design Limited | Wholesale & retail | 2018 |
| Norma Ppoject PC | | 2019 |
| Normal Network Ltd | Information & communication | 2025 |
| Norman Hartnell Limited | Financial services | 2021 |
| Normandickson Ltd | Health & social care | 2018 |
| Normandy Cardiff Limited | Real estate | 2003 |
| Normanton Security Limited | Other services | 2017 |
| Normax UK Limited | Manufacturing | 2024 |
| Normlex Ltd | Information & communication | 2025 |
| Nornxic Ltd | Wholesale & retail | 2022 |
| Norrman Ltd | Wholesale & retail | 2026 |
| Norrsken Holdings Ltd | Financial services | 2019 |
| Norsk Hydro(International) Crop Nutrition Co. Ltd | Extraterritorial | 2023 |
| Nortengo PC | | 2020 |
| Nortfx Limited | Professional & scientific | 2020 |
| North Angel Developments Ltd | Construction | 2024 |
| North Arran Hydropower Limited | Energy | 2026 |
| North Bridge Capital Ltd | Information & communication | 2021 |
| North Cardiff Cosmos FC Ltd | Arts & recreation | 2024 |
| North Cardiff Orthodontic Centre Limited | Health & social care | 2017 |
| North East Overheads Ltd | Energy | 2019 |
| North East PUB Company Limited | Hospitality | 2017 |
| North Face Properties Limited | Real estate | 2015 |
| North Ferriby United Football Club Limited | Administrative & support | 2019 |
| North Kensington Residential Ltd | Real estate | 2007 |
| North Plumbing and Heating Cardiff Ltd | Construction | 2023 |
| North Plus Security Service Limited | Administrative & support | 2020 |
| North Probuild Ltd | Construction | 2021 |
| North Properties Cardiff Limited | Real estate | 2022 |
| North South Technologies Ltd | Information & communication | 2017 |
| North Star Cardiff Ltd | Hospitality | 2026 |
| North Stoneham & Eastleigh Cricket Club CIC | Arts & recreation | 2019 |
| North Store Ltd | Wholesale & retail | 2025 |
| North West & Beyond Ltd | Manufacturing | 2021 |
| North West Contact Centre Forum Limited | Administrative & support | 2015 |
| North West Industries Ltd | Wholesale & retail | 2018 |
| North West Roofworks Ltd | Construction | 2025 |
| North West Security Group Ltd | Administrative & support | 2022 |
| North West Solar Limited | Construction | 2025 |
| North West Taverns Ltd | Hospitality | 2018 |
| North West Window Cleaners Limited | Administrative & support | 2025 |
| North-South Ecology Ltd | Professional & scientific | 2021 |
| Northampton Hospitality Ltd | Hospitality | 2024 |
| Northbridge Business BK Services Ltd | Real estate | 2019 |
| Northbridgeuk Ltd | Wholesale & retail | 2026 |