| Navtrak Ltd. | Administrative & support | 2007 |
| NB Newbury Ltd | Other services | 2019 |
| NB Productions Ltd | Information & communication | 2025 |
| Nbury Ltd | Hospitality | 2019 |
| NCA 46 Holdings Limited | Professional & scientific | 2023 |
| NCA 46 Midco Limited | Financial services | 2024 |
| NCI (Newbury) Limited | Construction | 2021 |
| Ncii Limited | Construction | 2020 |
| NCM Solutions Ltd | Information & communication | 2005 |
| ND Technologies Ltd | Information & communication | 2017 |
| Ndoedesign Ltd | Other services | 2015 |
| Neal Langley Ltd | Real estate | 2018 |
| Nearside Limited | Real estate | 1996 |
| Nebula Films Ltd | Information & communication | 2020 |
| Nebula Innovations Ltd | Administrative & support | 2018 |
| Neev Investment Properties Ltd | Real estate | 2018 |
| Neev Soft Ltd | Information & communication | 2013 |
| Neil Atherton Accountancy Services Limited | Professional & scientific | 2023 |
| Neon Architecture Ltd | Professional & scientific | 2021 |
| Nestt Properties Ltd | Construction | 2021 |
| Netadapt Limited | Information & communication | 2004 |
| Netballstars Ltd | Arts & recreation | 2021 |
| Netdocuments Limited | Information & communication | 2011 |
| Netenders UK Ltd | Wholesale & retail | 2022 |
| Netex Solutions Limited | Professional & scientific | 2010 |
| Netgb Limited | Information & communication | 1997 |
| Netronix Consultancy Limited | Information & communication | 2025 |
| Netrunner Media Ltd | Professional & scientific | 2024 |
| Netteam TX Limited | Information & communication | 2003 |
| Nettranslate Limited | Information & communication | 2016 |
| Netvoyager UK Limited | Financial services | 2024 |
| Networkability Limited | Information & communication | 1998 |
| Networking (CET) Limited | Information & communication | 2013 |
| Neucordat Limited | Information & communication | 2016 |
| Neural Technologies Limited | Information & communication | 1990 |
| Neuroknowhow Ltd | Education | 2011 |
| Nevek Consulting Limited | Professional & scientific | 2016 |
| New Delight Pizza Limited | Hospitality | 2026 |
| New Energy Consultants Ltd | Professional & scientific | 2012 |
| New England Stud Farm Limited | Agriculture & fishing | 1966 |
| New Road Greenham Management Company Limited | Households | 2020 |
| New Spot Investment Limited | Real estate | 2021 |
| NEW100 Ltd | Professional & scientific | 2025 |
| Newbrycks Ltd | Hospitality | 2023 |
| Newbury Academy Trust | Education | 2012 |
| Newbury Almshouse Trustee Ltd | Professional & scientific | 2018 |
| Newbury and Crookham Golf Club Limited | Arts & recreation | 1952 |
| Newbury Auto Services Limited | Wholesale & retail | 2025 |
| Newbury Autocare Ltd | Wholesale & retail | 2026 |
| Newbury Barbers Ltd | Other services | 2023 |
| Newbury Bathrooms Ltd | Construction | 2020 |
| Newbury Brazilian Jiu-Jitsu Ltd | Education | 2021 |
| Newbury Building Maintenance Ltd | Construction | 2024 |
| Newbury Business Improvement District Community Interest Company | Other services | 2009 |
| Newbury Cameras Limited | | 1985 |
| Newbury Charcoal Grill Ltd | Hospitality | 2026 |
| Newbury Chiropractic Centre Limited | Health & social care | 2004 |
| Newbury Community Football Group CIC | Arts & recreation | 2016 |
| Newbury Construction & Groundworks Ltd | Construction | 2016 |
| Newbury Consulting Ltd | Professional & scientific | 2022 |
| Newbury Cricket Club Ltd | Arts & recreation | 2021 |
| Newbury Delight Limited | Hospitality | 2025 |
| Newbury Dental Laboratories Limited | Health & social care | 1980 |
| Newbury Digital Limited | Information & communication | 2019 |
| Newbury Electrical Services Ltd | Construction | 2018 |
| Newbury Financial Services Limited | Financial services | 1985 |
| Newbury Fork Truck Centre Limited | Wholesale & retail | 1977 |
| Newbury Gymnastics Academy Limited | Other services | 2018 |
| Newbury Hair Studio Ltd | Other services | 2016 |
| Newbury Hand Car Wash Ltd | Wholesale & retail | 2022 |
| Newbury Innovation Developments Ltd | Manufacturing | 2023 |
| Newbury Innovation Limited | Professional & scientific | 2012 |
| Newbury Insurance Services Limited | Financial services | 1985 |
| Newbury Investments (UK) Limited | Professional & scientific | 1990 |
| Newbury Investments DC Pension Trustees Limited | Administrative & support | 2004 |
| Newbury Investments Holdings Limited | Other services | 2022 |
| Newbury Landscapes Limited | Professional & scientific | 2017 |
| Newbury Lettings Ltd | Real estate | 2006 |
| Newbury Logistics Limited | Transport & logistics | 2013 |
| Newbury Lotus Limited | Hospitality | 2024 |
| Newbury Maintenance Ltd | Other services | 2019 |
| Newbury Manor Marina Limited | Transport & logistics | 2026 |
| Newbury Mens Shed Ltd | Other services | 2026 |
| Newbury Mortgage Services Limited | Financial services | 1995 |
| Newbury Motors Limited | Wholesale & retail | 2005 |
| Newbury Nails Limited | Other services | 2014 |
| Newbury News and Media Ltd | Information & communication | 2019 |
| Newbury Nurseries Limited | Health & social care | 2013 |
| Newbury Optical Holdings Limited | Financial services | 2022 |
| Newbury Optical Limited | Health & social care | 2005 |
| Newbury Orchestra Productions Limited | Arts & recreation | 2023 |
| Newbury Pizza Limited | Extraterritorial | 2020 |
| Newbury Pumpkin Patch Ltd | Agriculture & fishing | 2023 |
| Newbury Roofing & Building Limited | Construction | 2015 |
| Newbury Self Store Limited | Transport & logistics | 1999 |
| Newbury Skate Foundation CIC | Education | 2026 |
| Newbury Spinal Health Clinic Limited | Health & social care | 2017 |
| Newbury Spring Festival Society Limited | Arts & recreation | 1981 |
| Newbury Store and More Ltd | Wholesale & retail | 2024 |
| Newbury Street (Wantage) M.C. Limited | Construction | 2014 |