| Nubian Shield Resources Ltd | Mining & quarrying | 2026 |
| Nubyen Limited | Manufacturing | 2015 |
| Nuclear Candy Limited | Information & communication | 2023 |
| Nuclear South West Ltd | Administrative & support | 2015 |
| Nucleus Engineering Ltd | Professional & scientific | 2016 |
| Nucross Limited | Households | 1983 |
| Nudawn Housing and Support Services Ltd | Education | 2019 |
| Nudge Studio Limited | Professional & scientific | 2013 |
| Nudgedriver Limited | Information & communication | 2026 |
| Nuels Consult Limited | Information & communication | 2015 |
| Nuels Villa Limited | Real estate | 2021 |
| Nuevo Brickwork Limited | Construction | 2024 |
| Nugent Hill Management Committee Limited | Households | 1977 |
| Nuhü Ltd | Other services | 2024 |
| NUI Foundation CIC | Professional & scientific | 2019 |
| Nukraft Limited | Hospitality | 2011 |
| Nula Ltd | Professional & scientific | 2019 |
| Nulight Studios Ltd | Information & communication | 2016 |
| Null Object Limited | Information & communication | 2022 |
| Nullscape Software Ltd | Information & communication | 2024 |
| Nulogy UK Ltd | Information & communication | 2019 |
| Numb Music Productions Ltd | Hospitality | 2001 |
| Number 10 Music Limited | Arts & recreation | 2024 |
| Number 12 College Road Limited | Administrative & support | 1971 |
| Number 20 Royal York Crescent Clifton Bristol Management Company Limited | Households | 1973 |
| Number 28 Productions Limited | Information & communication | 2018 |
| Number 5, Victoria Square Limited | Households | 1957 |
| Number 71, Lower Redland Road Management Limited | Households | 1988 |
| Number Eighty One Limited | Professional & scientific | 2014 |
| Number Eleven Event Production Limited | Arts & recreation | 2019 |
| Number Fifty-Six Tenants Association (1983) Limited | Households | 1983 |
| Number One Bristol Management Company Ltd | Households | 2016 |
| Number Seven Boat Trips Limited | Transport & logistics | 2002 |
| Number Seventeen Tenants Association Limited | Households | 1962 |
| NUMBER1PROPERTIES Limited | Real estate | 2012 |
| NUMBER52 LLP | | 2023 |
| Numbers Nook Ltd | Administrative & support | 2019 |
| Numbers Property Limited | Real estate | 2022 |
| Numerable Software Ltd | Information & communication | 2015 |
| Numesa Recordings Ltd | Arts & recreation | 2018 |
| Nuneaton Battery Storage Limited | Energy | 2024 |
| Nuno Carvalho Limited | Health & social care | 2009 |
| Nuoplaym Limited | Information & communication | 2024 |
| Nupower Electrical Limited | Construction | 2020 |
| NUR NAZ Bristol Limited | Hospitality | 2019 |
| NUR Supermarket Bristol Limited | Wholesale & retail | 2026 |
| Nura Catering Ltd | Hospitality | 2025 |
| Nurdel Ltd. | Wholesale & retail | 2026 |
| Nurgoth Limited | Real estate | 2017 |
| Nurs Daphne Ltd | Manufacturing | 2023 |
| Nurseline Community Services Ltd | Health & social care | 2016 |
| Nurseline Healthcare Ltd | Administrative & support | 2011 |
| Nurseries Southwest Ltd | Education | 2011 |
| Nursery Village Holdings Limited | Financial services | 2023 |
| Nursery Village Ltd | Health & social care | 2018 |
| Nursing Fundamentals Ltd | Education | 2024 |
| Nurtiq Ltd | Manufacturing | 2024 |
| Nurture Breathe Educate Ltd | Education | 2025 |
| Nurture Lead Generation Ltd | Administrative & support | 2017 |
| Nurturing Hands Domiciliary Limited | Health & social care | 2025 |
| Nush Management Limited | Households | 2019 |
| Nusku Limited | Manufacturing | 2022 |
| Nutechpharma Services Limited | Professional & scientific | 2021 |
| Nutgrove Ltd | Information & communication | 2017 |
| Nutmeg (Clifton) Ltd | Hospitality | 2016 |
| Nutri Eats Ltd | Manufacturing | 2025 |
| Nutriac UK Ltd | Manufacturing | 2021 |
| Nutrisure Limited | Hospitality | 2010 |
| Nutrition Medicine Clinic Ltd | Health & social care | 2024 |
| Nutritional Pathways Limited | Health & social care | 2020 |
| Nuttal Land Limited | Construction | 2023 |
| Nuttall (M&E) Ltd | Construction | 2011 |
| Nuttall Bowser Engineering Ltd | Professional & scientific | 2020 |
| Nuttall Building Services Limited | Construction | 2015 |
| Nutty Carpentry and Building Ltd | Manufacturing | 2021 |
| Nuture Care Services Ltd | Manufacturing | 2017 |
| Nuvola Aesthetics Ltd | Other services | 2025 |
| Nuvola Consulting Ltd | Information & communication | 2024 |
| Nuvola Estates Limited | Real estate | 2024 |
| Nuye Limited | Education | 2025 |
| Nuyu Skin Limited | Other services | 2025 |
| NV Gibson Limited | Health & social care | 2020 |
| NV Nite Vision Limited | Administrative & support | 2017 |
| Nvision Design Ltd | Professional & scientific | 2020 |
| Nviya Prime Limited | Information & communication | 2025 |
| NVQ Logic Ltd | Professional & scientific | 2025 |
| Nvsg Ltd | Wholesale & retail | 2025 |
| Nvus-Uk Limited | Wholesale & retail | 2022 |
| NVW Electrical Limited | Construction | 2007 |
| NW Brands Limited | Wholesale & retail | 2022 |
| NW Bristol Engineering Ltd | Manufacturing | 2025 |
| NW Cooling Ltd | Manufacturing | 2012 |
| NW Courier Services Ltd | Transport & logistics | 2026 |
| NW Express Haulage Limited | Transport & logistics | 2016 |
| NW Projects Limited | Professional & scientific | 2008 |
| NW8 Self Storage Ltd | Real estate | 2014 |
| Nwaw Holdings Ltd | Financial services | 2025 |
| NWE Limited | Construction | 1999 |
| NWM69 Holdings Limited | Real estate | 2019 |
| NWS Associates Ltd | Real estate | 2022 |