| Norfolk Stairs Ltd | Wholesale & retail | 2023 |
| Norfolk Stays (East) Ltd | Hospitality | 2022 |
| Norfolk Surgery Limited | Health & social care | 2019 |
| Norfolk Surveying and Design Limited | Professional & scientific | 2021 |
| Norfolk Talent Consulting Limited | Administrative & support | 2025 |
| Norfolk Tanks Limited | Administrative & support | 2009 |
| Norfolk Therapy Services Ltd | Health & social care | 2015 |
| Norfolk Timber Engineering Limited | Professional & scientific | 1991 |
| Norfolk Tourist Attractions Association Limited | Professional & scientific | 1992 |
| Norfolk Tower Limited | Real estate | 2024 |
| Norfolk Trailers Limited | Wholesale & retail | 2010 |
| Norfolk Transport Limited | Transport & logistics | 2017 |
| Norfolk Transport Solutions Ltd | Transport & logistics | 2025 |
| Norfolk Travels Limited | Transport & logistics | 2021 |
| Norfolk Truck & Van Limited | Wholesale & retail | 1984 |
| Norfolk Truck Rent Limited | Wholesale & retail | 2021 |
| Norfolk Trucks Limited | Professional & scientific | 1991 |
| Norfolk Urology Limited | Health & social care | 2016 |
| Norfolk Vascular Services Ltd | Health & social care | 2019 |
| Norfolk Ventilation Systems Ltd | Construction | 2023 |
| Norfolk Vintage BUS Hire Ltd | Transport & logistics | 2024 |
| Norfolk Waste Management Solutions Limited | Water & waste | 2017 |
| Norfolk Water Softeners Ltd | Construction | 2014 |
| Norfolk Wealth Management Limited | Professional & scientific | 2021 |
| Norfolk Wildlife Enterprises Limited | Wholesale & retail | 2008 |
| Norfolk Wildlife Services Limited | Professional & scientific | 2000 |
| Norfolk Wildlife Trust | Other services | 1926 |
| Norfolk Will Writing Services Ltd | Professional & scientific | 2015 |
| Norfolk Windows & Conservatories Ltd | Construction | 2002 |
| Norfolk Windscreens Ltd | Wholesale & retail | 2021 |
| Norfolk Wine School Limited | Education | 2025 |
| Norfolk WM Ltd | Professional & scientific | 2023 |
| Norfolk Women's Marketing Network CIC | Professional & scientific | 2022 |
| Norfolk Wood Flooring Ltd | Construction | 2021 |
| Norfolk Wraps Limited | Professional & scientific | 2025 |
| Norfolk Yacht Agency Limited | Manufacturing | 1985 |
| Norfolk Youth and Lifelong Learning Centre CIC | Education | 2025 |
| Norfolk's Finest Limited | Hospitality | 2013 |
| Norfolkbroads.Com Ltd | Information & communication | 2004 |
| Norfolkforte Limited | Wholesale & retail | 2005 |
| Norfolkhomeheat Ltd | Construction | 2024 |
| Norglaze Limited | Wholesale & retail | 2003 |
| Norjan (Properties) Limited | Construction | 2007 |
| Norkie Public House Ltd | Hospitality | 2024 |
| Norman IT Consulting Ltd | Information & communication | 2007 |
| Norman Rigby Investment Company Limited | Professional & scientific | 2016 |
| Norml Brand Limited | Arts & recreation | 2015 |
| Normove Limited | Transport & logistics | 2021 |
| Noroqest Ltd | Professional & scientific | 2019 |
| Norpark (Norwich) Limited | Administrative & support | 2004 |
| Norpile Limited | Construction | 2001 |
| Norsas Consultancy Ltd | Information & communication | 2015 |
| Norscot Limited | Mining & quarrying | 2001 |
| Norse Care (Services) Limited | Health & social care | 2010 |
| Norse Care Limited | Health & social care | 2010 |
| Norse Commercial Services Limited | Administrative & support | 1994 |
| Norse Development Company Limited | Other services | 2015 |
| Norse Eastern Limited | Administrative & support | 2010 |
| Norse Energy (Bscc Biomass) Limited | Professional & scientific | 2015 |
| Norse Energy (Bscc) Limited | Professional & scientific | 2015 |
| Norse Energy (Hafod) Limited | Professional & scientific | 2012 |
| Norse Energy (Stoke Gifford) Limited | Professional & scientific | 2015 |
| Norse Energy Limited | Professional & scientific | 2013 |
| Norse Environmental Waste Services Limited | Water & waste | 2013 |
| Norse Group Holdings Limited | Professional & scientific | 2019 |
| Norse Group Limited | Other services | 2006 |
| Norse Group Services Limited | Professional & scientific | 2014 |
| Norse Norwich Living Ltd | Construction | 2025 |
| Norse Secretaries Limited | Professional & scientific | 2009 |
| Norse South East Limited | Administrative & support | 2015 |
| Norse South West Limited | Other services | 2011 |
| Norse Transport | Transport & logistics | 2002 |
| Norsky Aerial Ltd | Professional & scientific | 2025 |
| Norspark Ltd | Construction | 2023 |
| Nortaxi Ltd | Transport & logistics | 2024 |
| Nortek Consultants Limited | Professional & scientific | 2002 |
| North Essex Electrical Limited | Construction | 1984 |
| North Farm 2012 Limited | Agriculture & fishing | 2012 |
| North Farm Livestock Limited | Agriculture & fishing | 1982 |
| North Geophysical Ltd. | Professional & scientific | 2018 |
| North Hykeham Day Centre Ltd | Health & social care | 2010 |
| North Norfolk Building & Carpentry Ltd | Manufacturing | 2020 |
| North Norfolk Country Hideaways Limited | Hospitality | 2021 |
| North Norfolk Enterprise Ltd | Hospitality | 2023 |
| North Norfolk Historic Buildings Trust Limited | Real estate | 1996 |
| North Norfolk Holiday Rentals Limited | Real estate | 2024 |
| North Norfolk Indoor Caravan Storage Ltd | Transport & logistics | 2023 |
| North Norfolk Laundry Services Limited | Administrative & support | 2011 |
| North Norfolk Physio Limited | Health & social care | 2026 |
| North Norfolk Property Group Ltd | Real estate | 2026 |
| North Norfolk Removals & Storage Ltd | Transport & logistics | 2013 |
| North Norfolk Swimming Pool & Spa Ltd | Arts & recreation | 2026 |
| North Shore Cafe Co Limited | Hospitality | 2024 |
| North South East Waste Management Limited | Construction | 2015 |
| North Wales Builders Limited | Construction | 2018 |
| North Walsham Road Limited | Real estate | 2010 |
| Northacres Trading Ltd. | Administrative & support | 2012 |
| Northbridge Impact Consulting Ltd | Professional & scientific | 2025 |
| Northern Rivers Sailing Club Ltd | Arts & recreation | 2020 |
| Northern Solar Acquisitions Limited | Energy | 2020 |