| NLA Group UK Ltd | Transport & logistics | 2021 |
| Nldfgelt Ltd | Manufacturing | 2026 |
| Nldfgree Ltd | Manufacturing | 2026 |
| NLG Services Limited | Administrative & support | 2019 |
| Nlitegroup Limited | Wholesale & retail | 2019 |
| Nllnux Limited | Wholesale & retail | 2021 |
| Nlmt Limited | Real estate | 2015 |
| NLS Global Ltd | Hospitality | 2019 |
| NLS Group Ltd | Transport & logistics | 2018 |
| Nlvxe Ltd | Financial services | 2021 |
| NM Tooth Solutions Ltd | Health & social care | 2025 |
| NMG Property Group Ltd | Construction | 2023 |
| NMH Engineering Limited | Professional & scientific | 2017 |
| NMJ Consultancy Ltd | Information & communication | 2014 |
| NMN Couriers Ltd | Transport & logistics | 2018 |
| NMT Engineering & Services Private Limited | Manufacturing | 2025 |
| NN Medical Services Ltd | Health & social care | 2018 |
| Nnaba Ltd | Professional & scientific | 2025 |
| Nnedohn Limited | Wholesale & retail | 2025 |
| Nnpc Ltd | Wholesale & retail | 2024 |
| Nnqppg Mart Ltd | Wholesale & retail | 2025 |
| Nnxuk Ltd | Wholesale & retail | 2018 |
| NO 16 LA Baguette Taban Ltd | Hospitality | 2025 |
| NO 3 Lounge Ltd | Hospitality | 2025 |
| NO 6 GIN & Fizz Ltd | Hospitality | 2019 |
| NO Boundaries Training & Consultancy Ltd | Professional & scientific | 2021 |
| NO Bull Comms Ltd | Information & communication | 2025 |
| NO Choice (Frome) Limited | Hospitality | 2023 |
| NO Choice Limited | Hospitality | 2015 |
| NO Code NO Magic Ltd | Information & communication | 2025 |
| NO HAY Nadie Ltd | Wholesale & retail | 2025 |
| NO Limits Contrators Ltd | Administrative & support | 2025 |
| NO Limits Sports Ltd | Arts & recreation | 2020 |
| NO More Unicorns Ltd. | Wholesale & retail | 2019 |
| NO Name Apparel Ltd | Manufacturing | 2018 |
| NO Pressure Group Ltd | Construction | 2020 |
| NO Stains Allowed Ltd | Administrative & support | 2022 |
| NO Stories Club Ltd | Wholesale & retail | 2026 |
| No-Pp Ltd | Administrative & support | 2017 |
| NO. 1 Fitzhamon Embankment Management Limited | Real estate | 2002 |
| NO. 3 Fitzhamon Embankment Management Limited | Real estate | 2019 |
| NO.1 Scaffolding - Cardiff Ltd | Construction | 2018 |
| NO.17 Tattoos Ltd | Other services | 2023 |
| NO.2 Heathfield Place Limited | Hospitality | 2001 |
| NO.23 Properties Ltd | Real estate | 2013 |
| NO1 Logistics Ltd | Transport & logistics | 2026 |
| NO41BOUTIQUE Ltd | Wholesale & retail | 2025 |
| NO7CHAUFFEURS Ltd | Transport & logistics | 2026 |
| NO9 Skin Hance Aesthetics Limited | Other services | 2017 |
| Noafashion Ltd | Wholesale & retail | 2024 |
| Noah ARK Ltd | Wholesale & retail | 2024 |
| Noah NDA Productions Limited | Information & communication | 2024 |
| Noah SW Limited | Wholesale & retail | 2021 |
| Noah's ARK Children's Hospital Charity | Health & social care | 1997 |
| Noah`S ARK Appeal Limited | Wholesale & retail | 2003 |
| Noam BSD Ltd | Real estate | 2017 |
| Nobilis Trading Ltd | Administrative & support | 2016 |
| Nobipay Ltd | Financial services | 2025 |
| Noble & Crown Ltd | Wholesale & retail | 2026 |
| Noble Advice Ltd | Administrative & support | 2019 |
| Noble Asset Advisors Ltd | Other services | 2024 |
| Noble Broker UK Ltd | Financial services | 2017 |
| Noble Care Service Limited | Health & social care | 2021 |
| Noble Interiors Furniture Ltd | Wholesale & retail | 2025 |
| Noble Summit Holdings Ltd | Financial services | 2024 |
| Noble Training Solutions Ltd | Education | 2012 |
| Noblecart Ltd | Wholesale & retail | 2025 |
| Noblekey Limited | Health & social care | 2022 |
| Nobleread Limited | Construction | 2020 |
| Nobles Music Limited | Wholesale & retail | 1996 |
| Nobody's Limited | Education | 2021 |
| Nocatec Limited | Professional & scientific | 2007 |
| Noclover Ltd | Wholesale & retail | 2024 |
| Noco Energy Limited | Information & communication | 2019 |
| Nodd Media Ltd | Information & communication | 2021 |
| Noddfa Bars Ltd | Hospitality | 2023 |
| Nodirpar Ltd | Hospitality | 2025 |
| Nodrap Ltd | Wholesale & retail | 2025 |
| Noel Glass Limited | Wholesale & retail | 2021 |
| Noesera Limited | Information & communication | 2026 |
| Nofit State Circus Trading Limited | Arts & recreation | 2007 |
| Nofit State Community Circus Ltd | Arts & recreation | 1996 |
| Nofivn Limited | Wholesale & retail | 2021 |
| Nofluffit Ltd | Information & communication | 2026 |
| NOI Group Ltd | Wholesale & retail | 2025 |
| Noir D' VIE Ltd | Manufacturing | 2025 |
| Noir Lash London Limited | Wholesale & retail | 2017 |
| Noir Notes Ltd | Wholesale & retail | 2025 |
| Noiram Limited | Professional & scientific | 2014 |
| Noirldn Ltd | Manufacturing | 2017 |
| Noisagency Ltd | Professional & scientific | 2024 |
| Noise PR & Talent Group Ltd | Professional & scientific | 2022 |
| Noisy Dear Limited | Construction | 2026 |
| Noitou Limited | Wholesale & retail | 2021 |
| Noja Power Limited | Manufacturing | 2010 |
| Nolan Events Limited | Hospitality | 2025 |
| Nolan Solutions Construction Ltd | Construction | 2024 |
| Noma's Kitchen Ltd | Hospitality | 2026 |
| Nomad Campervans Ltd | Wholesale & retail | 2010 |
| Nomad Reading Darllen Nomad C.B.C. | Information & communication | 2024 |