| Muralet Ltd | Information & communication | 2022 |
| Mushill Farm Limited | Agriculture & fishing | 2022 |
| Musically Limited | Professional & scientific | 2002 |
| MV Global Brands Ltd | Wholesale & retail | 2024 |
| MV Signa Ltd | Manufacturing | 2018 |
| MV SJ Property Ltd | Real estate | 2023 |
| MVM Logistics Limited | Transport & logistics | 2012 |
| Mwalsh Consulting Limited | Professional & scientific | 2022 |
| MWM Investments Limited | Real estate | 2023 |
| My Cell Health Ltd. | Wholesale & retail | 2024 |
| My Compliance Management Ltd | Information & communication | 2003 |
| My Engineering Ltd | Manufacturing | 2023 |
| My House Key Limited | Real estate | 2014 |
| My Invention Limited | Professional & scientific | 2003 |
| My Marketplace Oasis Ltd | Wholesale & retail | 2024 |
| My Passport Power Limited | Information & communication | 2017 |
| My Safety Solutions Ltd | Other services | 2012 |
| My Student Discount Ltd | Professional & scientific | 2022 |
| My Venture Coach Ltd | Information & communication | 2024 |
| Myface Global Ltd | Information & communication | 2026 |
| Mylae the Label Limited | Wholesale & retail | 2026 |
| Mymil Homes Limited | Construction | 2017 |
| Mymil Limited | Health & social care | 2010 |
| Myomakers Ltd | Professional & scientific | 2023 |
| Méline's Ltd | Manufacturing | 2019 |
| N & N Financial Service (UK) Limited | Real estate | 2015 |
| N Etherington Consultancy Ltd | Professional & scientific | 2024 |
| N J Taylor Holdings Limited | Professional & scientific | 2019 |
| N J Trading Agencies Limited | Wholesale & retail | 2021 |
| N M B Enterprises Limited | Information & communication | 2024 |
| N S Accountants Ltd | Information & communication | 2021 |
| N S M Logistics Limited | Manufacturing | 2002 |
| N&S Legacy Living Ltd | Real estate | 2025 |
| N. LAD Properties Limited | Households | 2016 |
| N. Townend (Loughborough) Limited | Construction | 2014 |
| N.H Collision Repair Centre Ltd | Wholesale & retail | 2025 |
| N.H Motor Services Ltd | Wholesale & retail | 2020 |
| N.H Performance Ltd | Wholesale & retail | 2009 |
| N.R.Fitchett & SON Limited | Construction | 1972 |
| N20 Capital Ltd | Real estate | 2017 |
| NA Legal Ltd | Professional & scientific | 2022 |
| NA Nasser Limited | Health & social care | 2012 |
| Naam Bureau Ltd | Information & communication | 2026 |
| Naam Limited | Wholesale & retail | 2017 |
| Nada Zero Waste Limited | Wholesale & retail | 2018 |
| Nahal Ventures Ltd | Professional & scientific | 2021 |
| Nails and the City London Ltd | Wholesale & retail | 2025 |
| Nails by Raluca Ltd | Other services | 2018 |
| Namitech UK Ltd | Professional & scientific | 2026 |
| Nancy Slessenger Ltd | Professional & scientific | 2023 |
| Nanhill Management Limited | Real estate | 1994 |
| Nanodot Limited | Wholesale & retail | 2018 |
| Nanpantan Hall Nurture Centre CIC | Education | 2021 |
| Nanpantan LEA Management Company Limited | Households | 2012 |
| Nanpantan Nursery School Limited | Education | 2006 |
| Nanuwa Properties Ltd | Real estate | 2015 |
| Narb Food Limited | Hospitality | 2023 |
| Narborough Garage Limited | Wholesale & retail | 2025 |
| Naresh IT Solutions Ltd | Information & communication | 2011 |
| Nasalean Logistics Ltd | Transport & logistics | 2018 |
| Nascars & Commercials Ltd | Wholesale & retail | 2023 |
| Nasi Holdings Limited | Financial services | 2023 |
| NAT & JO Ltd | Other services | 2023 |
| Nataliabognar Construction Ltd | Construction | 2025 |
| National Electrical Engineers Ltd | Construction | 2017 |
| Naturavolt Limited | Administrative & support | 2023 |
| Nature Healing Ways Ltd | Professional & scientific | 2023 |
| Nature’S Pulse UK Ltd | Wholesale & retail | 2026 |
| Nazli Medics Ltd | Health & social care | 2013 |
| NB Estate Agents Limited | Real estate | 2019 |
| NB Lettings Agents Limited | Real estate | 2019 |
| NB Property Services Limited | Construction | 2003 |
| Ncourage (Midlands) CIC | Administrative & support | 2024 |
| NDM Technologies Limited | Professional & scientific | 2010 |
| NED Holdings Limited | Financial services | 2019 |
| NED Logistics Limited | Transport & logistics | 2015 |
| Needhams Group Limited | Construction | 2022 |
| Needhams Windows Limited | Construction | 2022 |
| Neelam Fitness Limited | Arts & recreation | 2025 |
| Neil Adams Property Services Limited | Construction | 2006 |
| Neil Cameron Decorating Services Ltd | Construction | 2012 |
| Neos Insights Ltd | Information & communication | 2022 |
| Neressa Ltd | Information & communication | 2006 |
| NET Epos Solutions Ltd | Information & communication | 2019 |
| NET Gain Ltd | Professional & scientific | 2016 |
| NET Zero Target Ltd | Administrative & support | 2025 |
| Netball Super League Limited | Arts & recreation | 2024 |
| Neurodesign Limited | Health & social care | 2010 |
| Neurolink Therapies Ltd | Health & social care | 2023 |
| New Dimension (Mountsorrel) Limited | Other services | 2001 |
| New Enigma Limited | Professional & scientific | 2012 |
| New Euro Asia Cash & Carry Ltd | Hospitality | 2023 |
| New Europeans Association Limited | Other services | 2013 |
| New Golden Star Limited | Hospitality | 2026 |
| New Image International UK Limited | Wholesale & retail | 2024 |
| New Moon Foods Ltd | Wholesale & retail | 2025 |
| New Rising Sun Takeaway Ltd | Hospitality | 2023 |
| New Springs UK | Other services | 1998 |
| New Walk Holdings Limited | Financial services | 2023 |
| New Ways to Learn Limited | Administrative & support | 2011 |