| Molek Beauty Store Ltd | Other services | 2022 |
| Molly and Peppers Paws Ltd | Other services | 2026 |
| Moments Manager Ltd | Information & communication | 2023 |
| Monarch Equestrian Holdings Limited | Financial services | 2020 |
| Monarch Equestrian Limited | Manufacturing | 1996 |
| Monarch Haulage Ltd | Transport & logistics | 2017 |
| Mono African Food Store Limited | Wholesale & retail | 2025 |
| Moonlink Transport Ltd | Transport & logistics | 2020 |
| Moorfield Services Limited | Construction | 2017 |
| MOUNTL75 Ltd | Health & social care | 2022 |
| Moveks Limited | Health & social care | 2024 |
| Movex Transport Ltd | Transport & logistics | 2026 |
| MP Bros Ltd | Wholesale & retail | 2016 |
| MPG Consultancy Limited | Administrative & support | 2026 |
| MR Jatt Ice Cream Ltd | Wholesale & retail | 2024 |
| MS Athwal UK Ltd | Wholesale & retail | 2026 |
| MS Haulage Ltd | Transport & logistics | 2026 |
| MSS Building Services Limited | Construction | 2014 |
| Muddy PIG Butchers Ltd | Wholesale & retail | 2016 |
| Multani & Sons Ltd | Real estate | 2023 |
| Multani Construction Ltd | Construction | 2018 |
| Multani Freightways Limited | Transport & logistics | 2024 |
| Multani Homes Ltd | Real estate | 2022 |
| Multi-Move Logistics Ltd | Transport & logistics | 2026 |
| Mun-Chi Ltd | Wholesale & retail | 2020 |
| Murkz Property Ltd | Real estate | 2025 |
| Musafir Motors Limited | Wholesale & retail | 2025 |
| Mushables Ltd | Manufacturing | 2025 |
| Mustang Vending Ltd | Wholesale & retail | 2023 |
| MV Leisure (UK) Limited | Hospitality | 2010 |
| MVP Housing Limited | Real estate | 2024 |
| My Easy Funeral Ltd | Other services | 2024 |
| My Happy Coffee Club Ltd | Wholesale & retail | 2024 |
| My Happy Prints Ltd | Manufacturing | 2022 |
| Mydus Property Group Ltd | Construction | 2024 |
| Mylodging.Co.Uk Ltd | Real estate | 2025 |
| Myluxrii Limited | Manufacturing | 2024 |
| Mysie Parkes Ltd | Wholesale & retail | 2023 |
| Mythic Grading Ltd | Wholesale & retail | 2026 |
| N Deakin Ltd | Administrative & support | 2016 |
| N-Aman Constructions Ltd | Construction | 2021 |
| N.A.A Construction Ltd | Construction | 2021 |
| N.D.T. Engineering Ltd | Manufacturing | 2021 |
| N.T Engineering Services Ltd | Professional & scientific | 2005 |
| Nabzlabs Ltd | Professional & scientific | 2026 |
| Nagra Transportation Limited | Transport & logistics | 2016 |
| Nakash ALI Investments Ltd | Financial services | 2025 |
| Nakash ALI Trading Ltd | Financial services | 2025 |
| NAR Convenience Ltd | Wholesale & retail | 2020 |
| Nasant Health Ltd | Health & social care | 2022 |
| Nationworld Limited | Professional & scientific | 1992 |
| Natural Construction Ltd | Construction | 2025 |
| NAV Pain Clinic Ltd | Health & social care | 2025 |
| NAY Beauty Limited | Other services | 2024 |
| NB Trucks Limited | Administrative & support | 2008 |
| Ncapped Ltd | Wholesale & retail | 2021 |
| Nebo Children Services Ltd | Health & social care | 2025 |
| Nembus Properties Ltd | Real estate | 2022 |
| Nesha Woolery Limited | Education | 2019 |
| New Choice Properties Ltd | Real estate | 2025 |
| New Dawn Management Ltd | Professional & scientific | 2020 |
| New Ever Designs Limited | Professional & scientific | 2025 |
| New Invention Property Developments Limited | Real estate | 2021 |
| New Leaf Healthcare Services Ltd | Health & social care | 2018 |
| New Leaf Properties Ltd | Construction | 2026 |
| Newcroft Holdings Limited | Real estate | 2021 |
| Newlife Estate Agents Ltd | Real estate | 2021 |
| Newport Sushi Ltd | Wholesale & retail | 2026 |
| Nexgen Utilities Limited | Construction | 2025 |
| Nexora Acquisitions Ltd | Financial services | 2025 |
| Next Hot Five Limited | Real estate | 2021 |
| Next Hot Four Limited | Real estate | 2021 |
| Next Hot One Limited | Real estate | 2021 |
| Next Hot Three Limited | Real estate | 2021 |
| Next Hot Two Limited | Real estate | 2021 |
| Next-Gen Designs Limited | Construction | 2018 |
| Nexthot Limited | Hospitality | 1986 |
| Nextwave Payments Ltd | Financial services | 2025 |
| Nexus Growth 360 Ltd | Information & communication | 2026 |
| Nexus Workforce Payroll Ltd | Administrative & support | 2018 |
| NG Building Construction Limited | Construction | 2020 |
| NG Sahota Ltd | Administrative & support | 2025 |
| NGH Surface Coatings Limited | Construction | 2015 |
| Nhtplumb Ltd | Construction | 2025 |
| Nichelocks Limited | Wholesale & retail | 2009 |
| Nick Bedding Ltd | Wholesale & retail | 2026 |
| Nicton Group UK Ltd | Wholesale & retail | 2019 |
| Nikkiy.Jbl Limited | Other services | 2009 |
| Nikodem Ltd | Transport & logistics | 2015 |
| Nilaani Retail Ltd | Wholesale & retail | 2026 |
| Ninsoft Limited | Information & communication | 2006 |
| Nirvana Construction Ltd | Construction | 2011 |
| Nirvana Developments Ltd | Real estate | 2020 |
| Nirvana Land and Property Ltd | Real estate | 2019 |
| NMD Brickwork & Construction Ltd | Construction | 2024 |
| Nmvr Ltd | Wholesale & retail | 2024 |
| NO 1 Edgbaston Limited | Other services | 2017 |
| Nomiah Ltd | Transport & logistics | 2025 |
| Noteful Limited | Wholesale & retail | 2023 |
| Nova Children's Care Ltd | Health & social care | 2022 |