| Moxley Peoples Centre Charity | Other services | 1999 |
| Mptf Ltd | Transport & logistics | 2021 |
| MR Chicken Halal Ltd | Wholesale & retail | 2025 |
| MR J Pillow Ltd | Transport & logistics | 2019 |
| MR. Autofix Ltd | Wholesale & retail | 2026 |
| Mr.Cv Recruitment Ltd | Construction | 2016 |
| MRK Auto Parts Ltd | Wholesale & retail | 2025 |
| MS Arch Ltd | Professional & scientific | 2023 |
| Msahir Ltd | Wholesale & retail | 2024 |
| MSB Logistics Ltd | Transport & logistics | 2022 |
| MSC Fitness Ltd | Arts & recreation | 2024 |
| Mseng Ltd | Wholesale & retail | 2016 |
| MSK Home Group Limited | Real estate | 2024 |
| Mslinternational Limited | Wholesale & retail | 2019 |
| MTR Fresh Foods Limited | Wholesale & retail | 2022 |
| MTRANS4 Ltd | Transport & logistics | 2018 |
| Mubassir Ahmod Ltd | Professional & scientific | 2025 |
| Much Healthcare Ltd | Health & social care | 2023 |
| Muhammadia Boarding & Eteemkhana Ltd | Health & social care | 2017 |
| Mullins Banger Bits Ltd | Wholesale & retail | 2026 |
| Multani Double Glazing Ltd | Manufacturing | 2023 |
| Multi Housing Ltd | Construction | 2021 |
| Multi Kulti West Midlands C.I.C. | Education | 2019 |
| Mushroom Computing Ltd. | Information & communication | 2014 |
| Muxloe PO Ltd | Transport & logistics | 2025 |
| Muzeek Limited | Arts & recreation | 2016 |
| MV Jewellers Ltd | Wholesale & retail | 2025 |
| My Tiny Feet Ltd | Manufacturing | 2024 |
| Myvod Convenience Store Limited | Wholesale & retail | 2009 |
| MZ Maintenance Limited | Construction | 2017 |
| N & a Integrated Transport Services Limited | Professional & scientific | 2013 |
| N & S Joinery Services Limited | Construction | 2020 |
| N C Access Solutions Ltd | Construction | 2018 |
| N&G Chhokar Ltd | Transport & logistics | 2021 |
| N&J Radiography Ltd | Health & social care | 2025 |
| N.L.M. Trading Ltd | Construction | 2023 |
| N.R.M. Horseboxes Ltd | Wholesale & retail | 2017 |
| Naament Limited | Health & social care | 2014 |
| Nalgar Services Ltd | Health & social care | 2022 |
| NAS Social Work Solutions Ltd | Health & social care | 2025 |
| Nassermariah Ltd | Health & social care | 2025 |
| National Housing Solutions 247 Ltd | Real estate | 2024 |
| Nationwide Leisure and Building Services Limited | Construction | 2018 |
| Natural Remedies 4U Ltd | Wholesale & retail | 2020 |
| Naturlbag Ltd | Manufacturing | 2025 |
| Navya Mini Mart Ltd | Wholesale & retail | 2022 |
| NB Improvements Ltd | Construction | 2023 |
| NCP Humphries Demolition Limited | Construction | 2014 |
| NDE Consultancy Limited | Professional & scientific | 2025 |
| Negrila Trans Ltd | Transport & logistics | 2024 |
| NEK Builder Ltd | Construction | 2022 |
| Nelstar UK Limited | Wholesale & retail | 2005 |
| NEO Technologies Ltd | Manufacturing | 2018 |
| Neorecruits Ltd | Administrative & support | 2024 |
| Nessa Group Ltd | Wholesale & retail | 2025 |
| New Chop Suey House Limited | Hospitality | 2026 |
| New Crown Garage | | 2000 |
| New Dawn Conversions Ltd | Wholesale & retail | 2023 |
| New Smart Shutter & Shop Front Ltd | Manufacturing | 2024 |
| New Street Autos Ltd | Wholesale & retail | 2015 |
| Newby Foundries Limited | Manufacturing | 1910 |
| Newhomesbydesign Limited | Construction | 2018 |
| Newlook Design Drives & Patios Ltd | Construction | 2025 |
| Nextgen Real Estate Limited | Real estate | 2017 |
| Ngehebob Limited | Health & social care | 2021 |
| Nicholas Meese Limited | Real estate | 2025 |
| Nicklin Group of Companies Limited | Professional & scientific | 2005 |
| Nicklin Transit Packaging Limited | Manufacturing | 1946 |
| Night Hire Limited | Administrative & support | 2025 |
| Niki Soft Limited | Information & communication | 2023 |
| Nikko’S Deliveries Limited | Transport & logistics | 2026 |
| Nikk’S Kitchen UK Ltd | Hospitality | 2026 |
| NIM Halal Poultry Ltd | Wholesale & retail | 2022 |
| Niram Logistics Limited | Transport & logistics | 2021 |
| Nishraj Corporation Ltd | Wholesale & retail | 2024 |
| NKA Parts Limited | Manufacturing | 2014 |
| Nkss Services Limited | Administrative & support | 2016 |
| NLM Autos (Midlands) Ltd | Wholesale & retail | 2019 |
| NM Tool Centre Ltd | Wholesale & retail | 2022 |
| NO 1 Transport Ltd | Transport & logistics | 2019 |
| NO.9 Cafe Limited | Hospitality | 2023 |
| Noble Carpets and Interiors Ltd | Wholesale & retail | 2024 |
| NON Stop Bazaar Ltd | Households | 2006 |
| Noor AL Azhar Ltd | Information & communication | 2024 |
| Norfolk & Good Scaffolding Ltd | Construction | 2026 |
| Norma-Lee Consultancy Limited | Health & social care | 2017 |
| Norton Carpentry Contractors Ltd | Manufacturing | 2021 |
| NOZ Kicks Ltd | Manufacturing | 2025 |
| NTH Construction Ltd | Construction | 2025 |
| Ntui Logistics Limited | Transport & logistics | 2025 |
| NU Builders Limited | Construction | 2020 |
| NX Business Ltd | Hospitality | 2018 |
| OA Resources Accounting Services Ltd | Administrative & support | 2018 |
| Oakdene International Movements Ltd | Transport & logistics | 2024 |
| Oaklands Care Home Limited | Health & social care | 2025 |
| Oakley LP Properties Limited | Construction | 2022 |
| Ocean INT Limited | Transport & logistics | 2016 |
| Oceanic Fish Bar Ltd | Hospitality | 2023 |
| Oelmigust Limited | Wholesale & retail | 2025 |
| Office Refresh Ltd | Construction | 2020 |