| Norfolk Flooring Group Ltd | Real estate | 2026 |
| Norfolk Flooring Limited | Construction | 2015 |
| Norfolk G.V Construction Ltd | Construction | 2023 |
| Norfolk Green BUS Company Limited | Extraterritorial | 2015 |
| Norfolk Hand Crafted Kitchens Limited | Manufacturing | 2025 |
| Norfolk Holdings Limited | Construction | 2015 |
| Norfolk Holiday Home Services Ltd | Administrative & support | 2017 |
| Norfolk Home Search Ltd | Real estate | 2022 |
| Norfolk IT Ltd | Information & communication | 2026 |
| Norfolk Lavender Estates Limited | Real estate | 2009 |
| Norfolk Lavender Lounge Ltd | Hospitality | 2015 |
| Norfolk Lavender Trading Limited | Wholesale & retail | 2009 |
| Norfolk Leisure Lifestyle Limited | Wholesale & retail | 1997 |
| Norfolk Living Limited | Extraterritorial | 2025 |
| Norfolk Mobile Valeting Group Ltd | Wholesale & retail | 2019 |
| Norfolk Music Service Ltd | Arts & recreation | 2017 |
| Norfolk Natural Living Limited | Wholesale & retail | 2019 |
| Norfolk Norfolk SO Good They Named IT Twice Ltd | Hospitality | 2023 |
| Norfolk Oak Worktops LLP | | 2024 |
| Norfolk Painting School Live Ltd | Education | 2020 |
| Norfolk Plastering Services Limited | Construction | 2019 |
| Norfolk Produce Limited | Wholesale & retail | 2026 |
| Norfolk Property Auctions Ltd | Real estate | 2025 |
| Norfolk Property Investments Ltd | Real estate | 2010 |
| Norfolk Property Plan Limited | Real estate | 2020 |
| Norfolk Real Estate Developments Ltd | Construction | 2023 |
| Norfolk Real Estate Ltd | Real estate | 2015 |
| Norfolk Real Estate Property Limited | Real estate | 2023 |
| Norfolk Roosts Ltd | Construction | 2018 |
| Norfolk Safaris Limited | Education | 2013 |
| Norfolk Sheds Limited | Manufacturing | 2014 |
| Norfolk Site Safety Ltd | Professional & scientific | 2024 |
| Norfolk Sky Aesthetics Limited | Other services | 2024 |
| Norfolk Sky Limited | Arts & recreation | 2016 |
| Norfolk Steel Limited | Wholesale & retail | 2012 |
| Norfolk Symphony Orchestra (OTR) Ltd | Arts & recreation | 2018 |
| Norfolk Timepieces Ltd | Wholesale & retail | 2024 |
| Norfolk Transfer Ltd | Transport & logistics | 2023 |
| Norfolk Valley Fine Foods Ltd | Manufacturing | 2025 |
| Norfolk Van Sales Limited | Wholesale & retail | 2017 |
| Norfolk Wagyu Ltd | Agriculture & fishing | 2018 |
| Norfolk Wedding Photography Ltd | Professional & scientific | 2026 |
| Norfolk Wild Venison Ltd | Wholesale & retail | 2025 |
| Norfolkgold 2014 Limited | Wholesale & retail | 2024 |
| Norgen Developments (Hardwick Farm) Limited | Energy | 2020 |
| Norlet Property Ltd | Real estate | 2025 |
| Norman King Investments Limited | Real estate | 1959 |
| Norse Horse Ltd | Professional & scientific | 2009 |
| North Beach Estates Limited | Construction | 2021 |
| North Hirne Court Management Company Limited | Households | 1993 |
| North Lynn Discovery Limited | Other services | 2011 |
| North Norfolk Catering Hire Ltd | Hospitality | 2019 |
| North Norfolk Consulting Ltd | Professional & scientific | 2026 |
| North Norfolk Festival of Literature & Landscape CIC | Education | 2024 |
| North Norfolk Food and Drink Festival Limited | Administrative & support | 2013 |
| North Norfolk Gardens Limited | Administrative & support | 2017 |
| North Norfolk Leisure Ltd | Real estate | 2025 |
| North Norfolk Oyster Co Ltd | Hospitality | 2025 |
| North Norfolk Paddle Boards Ltd | Education | 2024 |
| North Norfolk Vehicle Solutions Limited | Wholesale & retail | 2005 |
| Northmind Ltd | Information & communication | 2025 |
| Northnorfolkrestaurants Ltd | Hospitality | 2024 |
| Northshore Landies Ltd | Administrative & support | 2021 |
| Norton Hill Services LLP | | 2014 |
| Norvilas Ltd | Transport & logistics | 2015 |
| Norwich Cosmetic Clinic Limited | Health & social care | 2009 |
| Nose Graze Limited | Information & communication | 2015 |
| Nota Bene Horticulture Limited | Arts & recreation | 2018 |
| Nova Holding Group Limited | Real estate | 2026 |
| Novatrust Technologies Ltd | Wholesale & retail | 2025 |
| NRG Solutions (Norfolk) Ltd | Professional & scientific | 2023 |
| NS Generation Limited | Financial services | 2022 |
| Nsopa Ltd | Transport & logistics | 2016 |
| Ntac (Newell Training & Assessment Consultancy) Limited | Professional & scientific | 2013 |
| NU & SE Ltd | Hospitality | 2025 |
| Nuav Ltd | Wholesale & retail | 2022 |
| Nuhaus Estates Limited | Real estate | 2025 |
| Number Seven Healthcare Ltd | Health & social care | 2016 |
| Nune Properties Limited | Construction | 2014 |
| Nunes Barbershop Limited | Other services | 2025 |
| Nurtured Nest Ltd | Administrative & support | 2025 |
| NW Pro Properties Limited | Real estate | 2025 |
| NW8 B Pro Limited | Other services | 2023 |
| O J Munday Farms Ltd | Agriculture & fishing | 2017 |
| O.A.J. Investment Holdings Limited | Real estate | 2018 |
| Oak Circle Mini Market Ltd | Wholesale & retail | 2025 |
| Oakfield Developments Norfolk Ltd | Construction | 2023 |
| Oakland Gardens Limited | Wholesale & retail | 2024 |
| Oakland View Ltd | Construction | 2015 |
| Oakwood Carpets and Flooring Limited | Wholesale & retail | 2012 |
| Oakwood Farms Ltd | Agriculture & fishing | 2010 |
| Oakwood Fire and Safety Solutions Limited | Manufacturing | 2010 |
| OBI Logistics Ltd | Transport & logistics | 2018 |
| Oceanus Leisure Ltd | Arts & recreation | 2020 |
| Ocsl Enterprises Ltd | Wholesale & retail | 2024 |
| OE Trees Limited | Agriculture & fishing | 2021 |
| OGL Invest Ltd | Administrative & support | 2023 |
| OHD Consulting Limited | Professional & scientific | 2011 |
| OHM Made Coils Ltd | Professional & scientific | 2019 |
| OJW Building Ltd | Construction | 2023 |