| Norwich Rental Management Limited | Agriculture & fishing | 2011 |
| Norwich Rental Properties Limited | Real estate | 2010 |
| Norwich Rentals Limited | Real estate | 2023 |
| Norwich Repair Shop Ltd | Wholesale & retail | 2023 |
| Norwich Research Limited | Professional & scientific | 1993 |
| Norwich Research Park Limited | Professional & scientific | 2013 |
| Norwich Research Park Management Limited | Households | 2013 |
| Norwich Residential Maintenance Limited | Administrative & support | 2010 |
| Norwich Residential Management Limited | Real estate | 2009 |
| Norwich Respiratory Ltd | Health & social care | 2022 |
| Norwich Road Developments Limited | Real estate | 2025 |
| Norwich Road Limited | Construction | 2022 |
| Norwich Road Motor Company Ltd | Wholesale & retail | 2023 |
| Norwich Road Property Management Company Limited | Households | 2020 |
| Norwich Road Strategic Ltd | Construction | 2015 |
| Norwich Roofing Ltd | Construction | 2023 |
| Norwich Roofshine & Commercial Cleaning Ltd | Administrative & support | 2026 |
| Norwich Science Park Limited | Construction | 1998 |
| Norwich Scrap Metals Ltd. | Water & waste | 2016 |
| Norwich Screen Art Ltd | Wholesale & retail | 2009 |
| Norwich Seaview Limited | Wholesale & retail | 2022 |
| Norwich Security Specialists Limited | Administrative & support | 2008 |
| Norwich Skin and Laser Clinic Ltd | Other services | 2021 |
| Norwich Solar Installations Ltd | Construction | 2022 |
| Norwich Solar System CIC | Professional & scientific | 2024 |
| Norwich Sound Hub Limited | Arts & recreation | 2025 |
| Norwich Sports & Classics Limited | Wholesale & retail | 2002 |
| Norwich Strength Training Limited | Arts & recreation | 2019 |
| Norwich Swan Swimming Club Ltd | Arts & recreation | 2025 |
| Norwich Swimming Pool Ltd | Other services | 2021 |
| Norwich Swimming Pool Mulbarton Ltd | Other services | 2025 |
| Norwich Swimming Pool Stoke Holy Cross Ltd | Arts & recreation | 2025 |
| Norwich Taverns Ltd | Hospitality | 2012 |
| Norwich Taxation Services Ltd | Professional & scientific | 2020 |
| Norwich Tech Hub Ltd | Wholesale & retail | 2025 |
| Norwich Tigers Ltd | Education | 2025 |
| Norwich Tiles and Bathrooms Limited | Wholesale & retail | 2024 |
| Norwich Tree Surgery Limited | Administrative & support | 2018 |
| Norwich Truck Wash Limited | Administrative & support | 2015 |
| Norwich Trust Limited | Financial services | 2020 |
| Norwich Tutors Limited | Education | 2025 |
| Norwich Tyres & Auto Service Limited | Wholesale & retail | 2025 |
| Norwich Tyres Limited | Wholesale & retail | 2026 |
| Norwich Underground Collective CIC | Arts & recreation | 2026 |
| Norwich United Football Club (2008) Limited | Arts & recreation | 2008 |
| Norwich United Football Club Limited | Arts & recreation | 1990 |
| Norwich University of the Arts Enterprises Limited | Education | 1994 |
| Norwich Urology Limited | Health & social care | 2019 |
| Norwich Van Centre Ltd | Wholesale & retail | 2018 |
| Norwich Van Hire Ltd | Administrative & support | 2026 |
| Norwich Vape Co Ltd | Wholesale & retail | 2019 |
| Norwich Vaping Ltd | Wholesale & retail | 2016 |
| Norwich Viking Motor Cycle Club Limited | Arts & recreation | 1982 |
| Norwich VR Ltd | Arts & recreation | 2019 |
| Norwich Washroom Services Limited | Administrative & support | 2012 |
| Norwich Waste Disposal Ltd | Water & waste | 2016 |
| Norwich Window Sales Limited | Other services | 2011 |
| Norwich Windows and Conservatories Ltd. | Construction | 1995 |
| Norwich Wood Burners & Home Improvements Ltd | Construction | 2023 |
| Norwich Yoga Central Ltd | Arts & recreation | 2020 |
| Norwich Yoga Festival Ltd | Other services | 2024 |
| Norwich Youth Dance Theatre CIC | Arts & recreation | 2026 |
| Norwichtaxi Ltd | Transport & logistics | 2023 |
| Nosaki W Limited | Professional & scientific | 2025 |
| Nosotros Ltd | Financial services | 2010 |
| NOT Applicable Productions Limited | Information & communication | 2021 |
| NOT for Profit Law Community Interest Company | Professional & scientific | 2021 |
| Notary Near ME Limited | Professional & scientific | 2020 |
| Notehouse Farms Limited | Agriculture & fishing | 2019 |
| Noterra Commerce Ltd | Wholesale & retail | 2026 |
| Nothing BUT Love Limited | Wholesale & retail | 2023 |
| Notion IT Ltd | Information & communication | 2014 |
| Notman and Company | | 1987 |
| Notsashabby GB Ltd | Manufacturing | 2021 |
| NOU World Ltd | Wholesale & retail | 2026 |
| Nourish of Ashburton Limited | Wholesale & retail | 2021 |
| Nouveau Care Ltd | Health & social care | 2015 |
| Nouvelle Consultancy Limited | Administrative & support | 2007 |
| Nova & Noir Ltd | Wholesale & retail | 2025 |
| Nova Admin Business Support Ltd | Administrative & support | 2019 |
| Nova Administration Support Ltd | Administrative & support | 2019 |
| Nova Bright Limited | Wholesale & retail | 2025 |
| Nova Cofoundery Limited | Administrative & support | 2017 |
| Nova Financial Services Ltd | Financial services | 2019 |
| Nova Fire Limited | Other services | 2025 |
| Nova Group Holdings Limited | Professional & scientific | 2016 |
| Nova Identity Limited | Information & communication | 2025 |
| Nova Industry Limited | Real estate | 1994 |
| Nova Packaging Developments Limited | Administrative & support | 2003 |
| Nova People Ltd. | Administrative & support | 1999 |
| Novabrick Properties Ltd | Real estate | 2025 |
| Novara Infrastructure Group Limited | Information & communication | 2026 |
| Novara Infrastructure Holdings Limited | Information & communication | 2026 |
| Novara Infrastructure Limited | Information & communication | 2026 |
| Novara International Developments Limited | Energy | 2019 |
| Novara UK Developments Limited | Energy | 2020 |
| Novaselves Ltd | Health & social care | 2020 |
| Novatide Electrical Services Ltd | Construction | 2022 |
| Novatide Properties Ltd | Real estate | 2024 |
| Novell Solutions Limited | Information & communication | 1996 |