| My Precious Paws Dog Grooming Ltd | Other services | 2025 |
| My Private Paediatrician Limited | Health & social care | 2026 |
| My Renovations Limited | Construction | 2017 |
| My Sons Properties Ltd | Real estate | 2023 |
| My Space Property Limited | Real estate | 2022 |
| My TCG Limited | Wholesale & retail | 2023 |
| Mycarla Ltd | Information & communication | 2017 |
| Mycarza Limited | Wholesale & retail | 2026 |
| Mycoworker.Co.Uk Limited | Administrative & support | 2026 |
| Myke Properties Ukeig | | 2015 |
| Mylyfe Ltd | Wholesale & retail | 2023 |
| MYM Architecture Ltd | Professional & scientific | 2025 |
| MYM Supply Ltd | Wholesale & retail | 2023 |
| Mymartedge Limited | Wholesale & retail | 2025 |
| Mymobilewallet Ltd | Information & communication | 2020 |
| Mynexthouse Ltd | Real estate | 2021 |
| Mynextmotor (Sales) Limited | Wholesale & retail | 2021 |
| Myrixo Ltd | Wholesale & retail | 2025 |
| Myspace Supported Housing CIC | Health & social care | 2025 |
| Mystar Resumes Ltd | Administrative & support | 2018 |
| MYT Clean Limited | Administrative & support | 2021 |
| MYT Management Limited | Information & communication | 2025 |
| Mytech Controls Ltd | Information & communication | 2019 |
| Mytel Systems Limited | Information & communication | 1997 |
| Mythise Ltd | Information & communication | 2022 |
| Myukconnect Ltd | Wholesale & retail | 2025 |
| MZF Drylining Ltd | Construction | 2025 |
| MZH Services Limited | Health & social care | 2021 |
| N & C Riseley Services Ltd | Wholesale & retail | 2018 |
| N & D Barbers Ltd | Other services | 2023 |
| N & J Electrical Services Limited | Construction | 2002 |
| N & M Estates (Beds) Limited | Real estate | 2021 |
| N and J Health & Protection Ltd | Financial services | 2020 |
| N B Carpentry Contractors Limited | Construction | 2006 |
| N J D Creative Limited | Professional & scientific | 2003 |
| N Khinda Limited | Administrative & support | 2016 |
| N S Painting and Decorating Limited | Construction | 2021 |
| N&K Building Services Limited | Construction | 2011 |
| N&L Project Management Ltd | Construction | 2023 |
| N&S Groundworks Limited | Construction | 2025 |
| N&S Properties Investment Ltd | Real estate | 2024 |
| N.A.I. Holdings Limited | Hospitality | 2018 |
| N.B. Services Olney Limited | Wholesale & retail | 1980 |
| N.M.T Crane & Plant Hire Limited | Real estate | 2023 |
| N.M.T Group Holdings Limited | Professional & scientific | 2023 |
| N.M.T. Plant Hire Limited | Administrative & support | 1978 |
| N.S. Planning & Development Limited | Real estate | 1996 |
| N2S Removals Ltd | Water & waste | 2025 |
| NA Build Limited | Construction | 2021 |
| NA Management Consulting Ltd | Extraterritorial | 2020 |
| Na-Voitures Body Repairs Ltd | Wholesale & retail | 2021 |
| Na-Voitures Ltd | Wholesale & retail | 2021 |
| Nabak Health Ltd | Health & social care | 2023 |
| Nabihah Parkar Ltd | Information & communication | 2024 |
| Nacex Limited | Construction | 2024 |
| Nade Nguyen & Co Ltd | Wholesale & retail | 2024 |
| Nadia Kopec Limited | Health & social care | 2022 |
| Naffie Beauty Ltd | Wholesale & retail | 2024 |
| NAH Foods Limited | Manufacturing | 2012 |
| Nahar Creative Design Limited | Professional & scientific | 2025 |
| Nahar Property Developments Ltd | Real estate | 2022 |
| Nahar Property Management Ltd | Real estate | 2018 |
| Nails on Tour Ltd | Other services | 2017 |
| Naims Enterprise Ltd | Hospitality | 2021 |
| Nainby Ltd | Administrative & support | 2018 |
| Nair Medical Services Limited | Health & social care | 2025 |
| Najo Limited | Real estate | 2005 |
| Nakam Investments Ltd | Financial services | 2024 |
| Namo Foods Consultancy Limited | Hospitality | 2023 |
| Nancy Neve Interiors Limited | Professional & scientific | 2021 |
| Nanda Estates and Investment Ltd | Real estate | 2025 |
| Nandha Property Group Limited | Wholesale & retail | 2021 |
| Nanny's Little Things Limited | Professional & scientific | 2023 |
| Naphrax Ltd. | Manufacturing | 2013 |
| Napier Street (Bedford) Limited | Real estate | 2005 |
| Napmaster Limited | Wholesale & retail | 2006 |
| Napoleonmhs Ltd | Health & social care | 2024 |
| NAR Builders Limited | Construction | 2006 |
| NAR Renovations Ltd | Construction | 2024 |
| Narayan Consulting Limited | Professional & scientific | 2010 |
| Narkan Ltd | Information & communication | 2014 |
| Narrative Industries Limited | Professional & scientific | 2010 |
| Nash Court (Bedford) Management Co Ltd | Real estate | 2006 |
| Nasila UK Ltd | Wholesale & retail | 2024 |
| Nastassia Sustain Consultancy Limited | Professional & scientific | 2025 |
| Nasya Investments Ltd | Transport & logistics | 2013 |
| Natalya James Alterations Ltd | Other services | 2022 |
| Natalya James Ltd | Wholesale & retail | 2021 |
| Natarie Events Decor Ltd | Professional & scientific | 2025 |
| Nath Nooks Ltd | Manufacturing | 2024 |
| Nathans Enterprise Limited | Financial services | 2022 |
| Nathans Holdings Limited | Financial services | 2022 |
| Natima Sarfo Properties Limited | Real estate | 2026 |
| National Property Services Limited | Construction | 2017 |
| National Will Writers and Probate Ltd | Professional & scientific | 2025 |
| Nationprime Ltd | Manufacturing | 2022 |
| Nations Foods Ltd | Wholesale & retail | 2026 |
| Nationwide Couriers Ltd | Transport & logistics | 2018 |
| Nationwide Prestige Indulgence Limited | Hospitality | 2025 |
| Nationwide Prestige Service Limited | Hospitality | 2015 |