| Mylnhurst Sports Education & Leisure | Education | 2008 |
| Mylocummanager UK Ltd | Professional & scientific | 2016 |
| Mylurah Ltd | Information & communication | 2025 |
| Myod Limited | Information & communication | 2010 |
| Mypod Ltd | Construction | 2013 |
| Myra Holdings Limited | Financial services | 2025 |
| Myra Kaur Logistics Solutions Ltd | Transport & logistics | 2026 |
| Myra Medical Support Ltd | Health & social care | 2025 |
| Myrah Limited | Wholesale & retail | 2020 |
| MYS Haulage Ltd | Transport & logistics | 2024 |
| Myschoolgear Limited | Wholesale & retail | 2025 |
| Myukmailbox.Com Ltd | Administrative & support | 2013 |
| Myvideotutor Ltd | Education | 2022 |
| Myworkgear.Co.Uk Limited | Wholesale & retail | 2021 |
| MZ Logistics Limited | Transport & logistics | 2025 |
| MZY Property Ltd | Real estate | 2026 |
| Mzylkypop Music Ltd | Administrative & support | 2003 |
| Möbel Type Limited | Administrative & support | 2023 |
| N & M Developments Ltd | Construction | 2025 |
| N & Y International Limited | Transport & logistics | 2021 |
| N Abassah Medical Services Ltd | Health & social care | 2015 |
| N Acharya Ltd | Health & social care | 2015 |
| N Allen Electrical Ltd | Construction | 2016 |
| N and TT Ltd | Health & social care | 2023 |
| N D Auto Repairs Ltd | Wholesale & retail | 2014 |
| N D S Ceramics Limited | Health & social care | 2006 |
| N E Electrical Wholesalers Limited | Wholesale & retail | 2001 |
| N Forrest Construction Ltd | Construction | 2012 |
| N J Services (Construction) Ltd | Construction | 2025 |
| N J W W Consultancy Limited | Professional & scientific | 2016 |
| N Jessop Plumbing Ltd | Construction | 2019 |
| N K C Recycling Limited | Wholesale & retail | 2019 |
| N K D Powdercoating Specialist Ltd | Manufacturing | 2025 |
| N K D Welding & Fabrication Specialist Ltd | Manufacturing | 2022 |
| N KAY Financial Management Limited | Professional & scientific | 2018 |
| N L R Precision Engineers Ltd | Manufacturing | 1999 |
| N Lingard Ltd | Information & communication | 2018 |
| N M Barron Associates Limited | Health & social care | 2012 |
| N M Smart Repairs Ltd | Construction | 2026 |
| N Mitchell Roofing Limited | Construction | 2015 |
| N Mohammed Limited | Health & social care | 2011 |
| N Rana Ltd | Health & social care | 2019 |
| N Sare Ltd | Wholesale & retail | 2023 |
| N Skinner and Co Limited | Administrative & support | 2024 |
| N Stewart Building Contractors Limited | Construction | 2009 |
| N W Engineering Resources Limited | Energy | 2016 |
| N W Roof - Maintenance Limited | Construction | 2025 |
| N&A Business Ltd | Extraterritorial | 2018 |
| N&C Partnership Ltd | Real estate | 2025 |
| N&K Properties Ltd | Real estate | 2025 |
| N&N Cleaning Solutions Ltd | Administrative & support | 2026 |
| N&R Food Hub Ltd | Hospitality | 2026 |
| N'Jie Estates & Lettings Limited | Real estate | 2022 |
| N. a. Malik Limited | Financial services | 2010 |
| N. Bramall & SON Limited | Wholesale & retail | 1986 |
| N. Grayson Limited | Wholesale & retail | 2003 |
| N. Murray Farriers Limited | Manufacturing | 2014 |
| N. Spencer (Financial Services) Ltd | Financial services | 2014 |
| N.A Holdings Group Ltd | Financial services | 2024 |
| N.A. Success Coaching Ltd | Other services | 2024 |
| N.A.D.S. (UK) Ltd | Construction | 2013 |
| N.Abd Properties Ltd | Real estate | 2026 |
| N.Armstrong Limited | Wholesale & retail | 1960 |
| N.C.S. (Trailers) Limited | Manufacturing | 1988 |
| N.J. Hancock Limited | Other services | 2003 |
| N.Marrison Construction Ltd | Wholesale & retail | 2014 |
| N.T Social Care Limited | Health & social care | 2014 |
| N.T. TAO UK Limited | Professional & scientific | 2024 |
| N.W. Precision Joinery Ltd | Construction | 2023 |
| N.W.Maintenance Ltd | Manufacturing | 2006 |
| N2S Ventures Limited | Wholesale & retail | 2024 |
| N8 Limited | Education | 2006 |
| NA Advising Ltd | Other services | 2022 |
| NA and EA Consulting Ltd | Professional & scientific | 2024 |
| NA GAS and Heating Ltd | Construction | 2022 |
| NA Hospitality Ltd | Hospitality | 2026 |
| NA Invest UK Limited | Real estate | 2024 |
| NA Trans Ltd | Transport & logistics | 2019 |
| NAA Shika's Catering Services Ltd | Hospitality | 2022 |
| Naajah Ltd | Other services | 2019 |
| Naan Heaven Ltd | Hospitality | 2024 |
| Naaoh Health Limited | Health & social care | 2015 |
| Naas Service Limited | Wholesale & retail | 2023 |
| Naash Limited | Hospitality | 2020 |
| Naat Healthcare Limited | Wholesale & retail | 2012 |
| Naaz Aesthetics Ltd | Extraterritorial | 2022 |
| Nabertherm Limited | Wholesale & retail | 2000 |
| Nabil Nayal Limited | Wholesale & retail | 2016 |
| Nable Worldwide Ltd | Extraterritorial | 2018 |
| Naburn Management Ltd | Professional & scientific | 2016 |
| Nacional Limited | Other services | 2012 |
| NAD 89 Limited | Manufacturing | 2025 |
| Nada Services Ltd | Real estate | 2024 |
| Nadawear Limited | Arts & recreation | 2015 |
| Nads Locum Limited | Health & social care | 2012 |
| Nadsfreddys Ltd | Hospitality | 2024 |
| Naeem a 2 Z Ltd | Administrative & support | 2019 |
| Nafas Solutions Limited | Wholesale & retail | 2025 |
| Nafis Fast Food Ltd | Hospitality | 2019 |
| Nagaiki Group Limited | Wholesale & retail | 2025 |