| Napp Pharmaceutical Holdings Limited | Manufacturing | 1997 |
| Napp Pharmaceuticals Limited | Wholesale & retail | 1998 |
| Napp Research Centre Limited | Extraterritorial | 1984 |
| Napper Brothers Limited | Financial services | 2026 |
| Nara Cambridge Ltd | Wholesale & retail | 2021 |
| Nasahi Ltd | Wholesale & retail | 2017 |
| Nascent Consulting Services Ltd | Professional & scientific | 2020 |
| Nascent Technology Consulting Ltd. | Information & communication | 2011 |
| Nash Matthews LLP | | 2013 |
| Nashlea Limited | Construction | 2021 |
| Nason Davis Holdings Limited | Professional & scientific | 2015 |
| Nason Davis Limited | Wholesale & retail | 1989 |
| Nastie Technology Limited | Information & communication | 2026 |
| Natago Ltd | Professional & scientific | 2024 |
| Natasha White Solutions Limited | Real estate | 2024 |
| Nath and Sons UK Ltd | Wholesale & retail | 2017 |
| Nathan Drug Development Consulting Ltd | Professional & scientific | 2023 |
| Nathij Limited | Health & social care | 2020 |
| National Association of Counsellors Hypnotherapists and Psychotherapists | Health & social care | 2002 |
| National Extension College Trust Limited | Education | 1934 |
| National Institute of Agricultural Botany Trust | Professional & scientific | 2011 |
| National Property Relocation Ltd | Hospitality | 2023 |
| Nationwide Call-Outs Ltd | Administrative & support | 2025 |
| Nationwide Parks Ltd | Hospitality | 2024 |
| Natson Limited | Professional & scientific | 2009 |
| Natural & Wild Ltd | Education | 2021 |
| Natural Exotica Ltd | Manufacturing | 2019 |
| Natural Landscapes (Cambridge) Limited | Administrative & support | 2003 |
| Natural Technology Engineering Ltd | Wholesale & retail | 2022 |
| Naturally Limited | Agriculture & fishing | 2025 |
| Naturalpass Ltd | Information & communication | 2026 |
| Nature Beautiful Foods Ltd | Wholesale & retail | 2024 |
| Nature Health Care Ltd | Wholesale & retail | 2025 |
| Nature Health UK Ltd | Health & social care | 2016 |
| Nature PAK Co., Ltd | Extraterritorial | 2021 |
| Nature Positive Solutions Ltd | Professional & scientific | 2024 |
| Nature's Posy Ltd | Wholesale & retail | 2019 |
| Naturefusion UK Ltd | Wholesale & retail | 2024 |
| Natures Finest Health UK Limited | Wholesale & retail | 2022 |
| Natyanjali School of Dance Ltd | Education | 2026 |
| Naughty Lads Limited | Wholesale & retail | 2002 |
| Navigant Driving School Limited | Education | 2025 |
| Navigo Limited | Professional & scientific | 1998 |
| Nawaab Restaurant(Cambridge) Ltd | Hospitality | 2025 |
| Nawiri Ltd | Agriculture & fishing | 2026 |
| Naya Real Estate Limited | Construction | 2025 |
| Nayab Limited | Health & social care | 2013 |
| NAZ Khan Ltd | Wholesale & retail | 2011 |
| Nazar Bar & Grill Ltd | Hospitality | 2025 |
| Nazdar International Trading Co., Ltd | Manufacturing | 2024 |
| Nberg Ltd | Wholesale & retail | 2023 |
| Nbihe Co., Ltd | Manufacturing | 2018 |
| NBR Flex Ltd | Transport & logistics | 2025 |
| NCC Composites Ltd | Other services | 2017 |
| NCG CAM Solutions Limited | Information & communication | 2009 |
| NCI Bar and Catering CIC | Hospitality | 2018 |
| Ncipher Security Limited | Financial services | 2025 |
| NCN Bearing Ltd | Manufacturing | 2026 |
| ND Construction (Cambs) Ltd | Construction | 2026 |
| Ndeity LLP | | 2025 |
| NDG Artificial Intelligence Limited | Information & communication | 2019 |
| Ndimension (Science and Engineering) Ltd. | Professional & scientific | 2014 |
| NDM Roofing Limited | Construction | 2025 |
| NDM Systems Limited | Information & communication | 2005 |
| Ndps UK Ltd | Arts & recreation | 2022 |
| NE Chef Limited | Hospitality | 2014 |
| Nearly Invisible Limited | Information & communication | 2021 |
| Neart Partners Limited | Professional & scientific | 2024 |
| Neat Computer Education Limited | Education | 2020 |
| Neat IT Solutions Ltd | Information & communication | 2018 |
| Neave's Farm Ltd | Extraterritorial | 2020 |
| Nebula Space Limited | Professional & scientific | 2012 |
| Necty-Matei Ltd | Manufacturing | 2024 |
| Need for Nutrition Education/Innovation Programme (Nnedpro) & Cambridge Research, Education and Training Enterprise (Create) | Professional & scientific | 2015 |
| Neffy Care Services Ltd | Health & social care | 2022 |
| Nefistanbul Cambridge Ltd | Hospitality | 2026 |
| Negroni Venture Studios Ltd | Professional & scientific | 2024 |
| Nehamcommerce Ltd | Wholesale & retail | 2025 |
| Nehara Ltd | Wholesale & retail | 2025 |
| Neighbourhood Solutions Ltd. | Administrative & support | 2002 |
| Neil Curry Hairdressing Ltd | Other services | 2002 |
| Neil Doran Motorsport Limited | Wholesale & retail | 2011 |
| Neil Grover Consulting Ltd | Professional & scientific | 2025 |
| Neil Holland Aero Ltd | Manufacturing | 2020 |
| Neil JAY Ltd | Real estate | 2020 |
| Neil Marriott Limited | Construction | 2003 |
| Neil Rayner Limited | Information & communication | 2018 |
| Neil Refinish Technic Ltd | Manufacturing | 2025 |
| Nelu&Ramy Ltd | Manufacturing | 2024 |
| Neluxa Sparkles Ltd | Wholesale & retail | 2025 |
| Nemer Investments Limited | Professional & scientific | 2016 |
| Nemer Properties Limited | Construction | 2024 |
| Nemer Real Estate Ltd | Real estate | 2025 |
| NEO Plumbing Ltd | Construction | 2025 |
| NEO Plumbing Solution Limited | Construction | 2025 |
| Neobe Therapeutics Ltd | Professional & scientific | 2021 |
| Neobee Limited | Wholesale & retail | 2019 |
| Neoc Ltd | Construction | 2020 |
| Neochip Ltd | Professional & scientific | 2018 |
| Neofield Limited | Information & communication | 2019 |