| Moreton Lane Developments Ltd | Real estate | 2022 |
| Morgrai Consultancy Limited | Professional & scientific | 2010 |
| Morphiluxar Ltd | Wholesale & retail | 2026 |
| Morris Car Sales Ltd | Wholesale & retail | 2016 |
| Morton Transport Limited | Transport & logistics | 2024 |
| MOS Property Services Ltd | Real estate | 2025 |
| Moseley House (Needwood) Limited | Households | 2022 |
| Mosnegutu Mihai Ltd | Transport & logistics | 2024 |
| Motion BI Ltd | Information & communication | 2019 |
| Motive Music Entertainments Ltd | Arts & recreation | 2026 |
| Moto Events Ltd | Transport & logistics | 2019 |
| Motocycology Limited | Professional & scientific | 2014 |
| Motorcycle Funerals Limited | Other services | 2002 |
| Motors A2Z Ltd | Wholesale & retail | 2025 |
| Mount Hotel Ashbourne Ltd | Hospitality | 2021 |
| Mount Technical Limited | Professional & scientific | 2026 |
| Mount Technologies Limited | Wholesale & retail | 2006 |
| Movecorp Holdings Limited | Administrative & support | 2012 |
| Movecorp Property Limited | Real estate | 2008 |
| Moxie Building Ltd | Financial services | 2024 |
| MPE48 Limited | Other services | 2016 |
| MPF Trade Limited | Wholesale & retail | 2022 |
| MPG Buildings Limited | Wholesale & retail | 2004 |
| MPR Property Group Ltd | Construction | 2021 |
| MPW Manufacturing Group Ltd | Manufacturing | 2022 |
| MPW Precision Limited | Professional & scientific | 2018 |
| MR (Derbyshire) Ltd | Real estate | 2015 |
| MR Shawarma Burton Ltd | Hospitality | 2026 |
| MR Tax Software Ltd | Information & communication | 2009 |
| MR. Mechanic Limited | Wholesale & retail | 2024 |
| MR7 Transport Ltd | Transport & logistics | 2023 |
| MRK Property Ltd | Real estate | 2018 |
| MRN Car Ltd | Transport & logistics | 2025 |
| MS Driveways Ltd | Construction | 2025 |
| MS Road Limited | Transport & logistics | 2025 |
| MS22 Supply Ltd | Wholesale & retail | 2025 |
| MSJ Property Maintenance Ltd | Professional & scientific | 2023 |
| MSK Recalibration Ltd | Other services | 2023 |
| Mskaccessories Ltd | Wholesale & retail | 2024 |
| Msnn Limited | Real estate | 2026 |
| MSQ Electrics Ltd | Construction | 2026 |
| Mswbc Limited | Information & communication | 2014 |
| MT Prestige Building Ltd | Construction | 2024 |
| Mtih Ltd | Wholesale & retail | 2018 |
| MTN Tech Services Ltd | Construction | 2021 |
| Mtwceducation Limited | Education | 2018 |
| Mugurel Express Ltd | Transport & logistics | 2025 |
| Muhammad Saim Ltd | Professional & scientific | 2025 |
| Mukisa Enterprise Limited | Health & social care | 2016 |
| Mulberry Street Cupcakes Ltd | Wholesale & retail | 2020 |
| Multi-Care Community Services Burton on Trent Ltd | Health & social care | 2020 |
| Multiplex Systems Ltd | Other services | 2021 |
| Mumtaz Khan Immigration Law Firm Ltd | Professional & scientific | 2023 |
| Munch Republic Group Ltd | Hospitality | 2025 |
| Music Academy for Schools Limited Liability Partnership | | 2009 |
| Mvento Holdings Ltd | Real estate | 2026 |
| MVF Transport Limited | Transport & logistics | 2019 |
| Mvjp Property Ltd | Real estate | 2022 |
| MWC Industrial Services Limited | Construction | 2013 |
| MXM Recruitment Limited | Administrative & support | 2025 |
| My Eco Leisure Ltd | Hospitality | 2024 |
| My Forever Pet Limited | Manufacturing | 2021 |
| My Funeral Plan Ltd | Other services | 2024 |
| My Independent Life CIC | Health & social care | 2025 |
| My Mobile Bar Limited | Wholesale & retail | 2016 |
| My Private Transport Ltd | Transport & logistics | 2025 |
| My Tiny Letter Ltd | Information & communication | 2026 |
| Myhowzer Ltd | Construction | 2018 |
| Myrce Featherstone Limited | Real estate | 2016 |
| Myrce Lichfield Limited | Real estate | 2005 |
| Myrce Real Estate Investment Limited | Financial services | 2016 |
| Myrce Wade Street Limited | Real estate | 2019 |
| Mystery Enterprise Ltd | Construction | 2025 |
| MZ Driving School Limited | Education | 2026 |
| MZ Retail Ltd | Wholesale & retail | 2024 |
| N & D Pubs Ltd | Hospitality | 2021 |
| N and S Catering Limited | Hospitality | 2024 |
| N Ashwood Ltd | Health & social care | 2019 |
| N J Boddey Construction Ltd | Construction | 2015 |
| N M UK Transport Ltd | Transport & logistics | 2025 |
| N S Maumbe Limited | Health & social care | 2023 |
| N&P Creating Special Moments Limited | Hospitality | 2026 |
| N, J & W Consultants Limited | Professional & scientific | 2017 |
| N.B. Hospitality Ltd | Hospitality | 2015 |
| NA Property & Maintenance Ltd | Real estate | 2020 |
| Nabaress Ltd | Professional & scientific | 2019 |
| Nado Services Ltd | Construction | 2025 |
| Nafura Advanced Technologies Limited | Manufacturing | 2025 |
| Naia Designs Ltd | Transport & logistics | 2024 |
| Naky Transport Ltd | Transport & logistics | 2017 |
| Nalinco Limited | Professional & scientific | 2007 |
| Naomi Slights Fitness Ltd | Education | 2022 |
| Nascdata Limited | Information & communication | 2021 |
| Nashiru Motorsport Ltd | Wholesale & retail | 2019 |
| NAT Survey Ltd | Construction | 2016 |
| Natalia Shop Ltd | Wholesale & retail | 2024 |
| Nation Vend Ltd | Wholesale & retail | 2025 |
| National Motors Ltd | Wholesale & retail | 2019 |
| National Pile Croppers Limited | Administrative & support | 2015 |
| National Service Solutions Limited | Arts & recreation | 2006 |