| Msbc South West Ltd | Construction | 2024 |
| MSE Solutions Limited | Financial services | 2019 |
| Mseis Limited | Professional & scientific | 2004 |
| MSS Care Ltd | Health & social care | 2025 |
| MT Dwellings Ltd | Real estate | 2026 |
| MT Properties (WSM) Limited | Real estate | 2026 |
| MT Vacations Limited | Hospitality | 2023 |
| Mulberry France Limited | Real estate | 2024 |
| Multi Fresh Ltd | Other services | 2022 |
| Multidrop Distribution Ltd | Transport & logistics | 2014 |
| Multidrop Property Services Ltd | Other services | 2025 |
| Munchies 68 Ltd | Hospitality | 2024 |
| Munscroft Court Weston-Super-Mare Maintenance Company Limited | Households | 1976 |
| Muriel's Gardening Club CIC | Other services | 2022 |
| Murphy South West Ltd | Construction | 2019 |
| Murray Brown Designs Limited | Professional & scientific | 2026 |
| Muscle Apprentice Limited | Arts & recreation | 2020 |
| Muscle Remap Ltd | Other services | 2015 |
| Museum of Communist Terror | Arts & recreation | 2017 |
| Mushin Judo Ltd | Education | 2026 |
| Music for Pleasure Concerts Limited | Arts & recreation | 2026 |
| MW GAS Ltd | Construction | 2011 |
| MW Marine Navigation Limited | Transport & logistics | 2014 |
| Mwadira Limited | Health & social care | 2014 |
| MX Plastering Services Ltd | Construction | 2024 |
| My First Finances Ltd | Information & communication | 2018 |
| My Little Soldier Productions Limited | Professional & scientific | 2010 |
| My Maria Limited | Administrative & support | 2015 |
| My Money Coach Limited | Extraterritorial | 2022 |
| My Resourcing Group Limited | Administrative & support | 2020 |
| My Vegan Hamper Ltd | Wholesale & retail | 2020 |
| Myhouse Property Management Limited | Real estate | 2020 |
| Myrtledash Gundogs Limited | Agriculture & fishing | 2025 |
| Myspeeddate Ltd | Other services | 2012 |
| Myuk.Travel Ltd | Information & communication | 2008 |
| N & G Haulage Ltd | Construction | 2010 |
| N Stathers Building Contractors Limited | Construction | 2025 |
| N&L Drylining Services Limited | Construction | 2024 |
| N&L Property Services Ltd | Real estate | 2026 |
| N&S Commercials Ltd | Wholesale & retail | 2026 |
| N.D.White Transport Ltd | Transport & logistics | 2025 |
| N.S.V. Caravans Limited | Administrative & support | 2006 |
| Nachee Investments Limited | Real estate | 2022 |
| Nadina N Limited | Manufacturing | 2013 |
| Nailsea Flooring Ltd | Construction | 2013 |
| Nana AJ Logistics Limited | Transport & logistics | 2025 |
| Nantow Ltd | Other services | 2019 |
| Natasha Shallcross Consultancy Limited | Professional & scientific | 2025 |
| Nathan Edwards UK Ltd | Wholesale & retail | 2016 |
| Nathan Wilkins Property Limited | Real estate | 2015 |
| Nathrael Homes Ltd | Health & social care | 2026 |
| Nation Commercial Holdings Ltd | Real estate | 2012 |
| Nbab Ltd | Health & social care | 2019 |
| NDC Commercial Property Services Ltd | Real estate | 2025 |
| Ndsn Limited | Education | 2021 |
| Neale Accounting Solutions Limited | Professional & scientific | 2012 |
| Needlecast Ltd | Information & communication | 2012 |
| Needs Property Ltd | Real estate | 2025 |
| Neil Atkinson Photography Ltd | Professional & scientific | 2016 |
| Neil's Data Consultancy Ltd | Professional & scientific | 2018 |
| Neil’S Data Consultancy Coaching Ltd | Other services | 2023 |
| Neil’S Data Consultancy Holdings Ltd | Financial services | 2022 |
| Neil’S Data Consultancy Property Services Ltd | Real estate | 2022 |
| Nel’S Numbers Ltd | Professional & scientific | 2023 |
| Nest GI Ltd | Financial services | 2020 |
| NET Ludens Limited | Arts & recreation | 2021 |
| Netherleigh Mansions Management Company Limited | Administrative & support | 1988 |
| Network Events Limited | Arts & recreation | 2022 |
| Neva Lodge (Weston-Super-Mare) Limited | Households | 1974 |
| New 40 Ashcombe Management Limited | Households | 2024 |
| New 74 Milton Road Management Limited | Households | 2025 |
| New AGE Render Ltd | Construction | 2023 |
| New Data Contractors Ltd | Information & communication | 2015 |
| New Grand Supermarket Ltd | Wholesale & retail | 2024 |
| New Life Classes Ltd | Education | 2015 |
| New Mare Limited | Hospitality | 2023 |
| New W.S.M Market Ltd | Wholesale & retail | 2021 |
| New Wang's Kitchen Limited | Hospitality | 2021 |
| New West Gypsum Recycling (UK) Limited | Water & waste | 2004 |
| Newedenmga Limited | Financial services | 2024 |
| Newtons Systems Ltd | Information & communication | 2014 |
| Nexar Marketing Limited | Professional & scientific | 2024 |
| Next Elevation Scaffolding Ltd | Construction | 2017 |
| Next Point Ltd | Professional & scientific | 2025 |
| Next Theme Ltd | Professional & scientific | 2019 |
| Next Theme Marketing Ltd | Professional & scientific | 2025 |
| Nexus Care Academy Ltd | Administrative & support | 2026 |
| NFT Peeps Ltd | Professional & scientific | 2022 |
| NH Building & Carpentry Services Ltd | Construction | 2019 |
| NH Catering Limited | Hospitality | 2024 |
| NH Property Group Ltd | Real estate | 2026 |
| Niblett Building Services Limited | Construction | 2001 |
| Nicholas Morris Bricklaying Services Limited | Construction | 2000 |
| Nicholsautomotive Ltd | Wholesale & retail | 2025 |
| Nick Hill Limited | Financial services | 2023 |
| Nick James Home Heating Limited | Construction | 2025 |
| Nick James Vehicle Solutions Ltd | Wholesale & retail | 2018 |
| Nicola Perry Counselling & Supervision Ltd | Health & social care | 2018 |
| Nidus Property Ltd | Real estate | 2017 |
| Nifty Couriers Limited | Transport & logistics | 2012 |