| MW & TW Services Ltd | Transport & logistics | 2010 |
| Mwbv Removals Ltd | Transport & logistics | 2018 |
| Mweelrea Commerce Ltd | Wholesale & retail | 2026 |
| MWM Brickwork Ltd | Construction | 2018 |
| Mwtek Ltd | Manufacturing | 2023 |
| Mxpress Limited | Information & communication | 2024 |
| My Baby Spa Ltd | Other services | 2021 |
| My Business Finance Limited | Financial services | 2020 |
| My Child Hub Ltd | Administrative & support | 2021 |
| My Comedy Limited | Arts & recreation | 2018 |
| My Doris Limited | Wholesale & retail | 2019 |
| My Hero ME Ltd | Wholesale & retail | 2025 |
| My Hood Estates Ltd | Real estate | 2025 |
| My Lifestyler Ltd | Manufacturing | 2019 |
| My Little Belly Ltd | Information & communication | 2020 |
| My Little Diamonds Ltd | Education | 2021 |
| My Lush Living Ltd | Wholesale & retail | 2025 |
| My Midwife Madelaine Ltd | Health & social care | 2023 |
| My Papercut Forest Ltd | Wholesale & retail | 2022 |
| My Pure Enterprises Ltd | Information & communication | 2024 |
| My Quick Shift Ltd | Real estate | 2020 |
| My Remote Hero Limited | Administrative & support | 2023 |
| My Rizq Holdings Ltd | Financial services | 2024 |
| My Snazzy Ltd | Wholesale & retail | 2006 |
| My Soft Life Ltd | Wholesale & retail | 2025 |
| My Spa Tech Limited | Wholesale & retail | 2022 |
| My Village and I Ltd | Information & communication | 2026 |
| My Website Ltd | Information & communication | 2026 |
| My Whey Supplements Ltd | Wholesale & retail | 2022 |
| MYA Finity Ltd | Information & communication | 2025 |
| Myaddi Limited | Information & communication | 2026 |
| Mydas Energy Ltd | Construction | 2025 |
| Mydaylogs Ltd | Information & communication | 2025 |
| Myevbuilds Ltd | Wholesale & retail | 2025 |
| MYK Estate Ltd | Real estate | 2025 |
| Mykaree Ltd | Professional & scientific | 2026 |
| Mykinnect Ltd | Information & communication | 2026 |
| Myles Property Limited | Real estate | 2025 |
| Mymedicalsupport UK Ltd | Information & communication | 2025 |
| Mynd MAP CIC | Education | 2026 |
| MYP Health Ltd | Wholesale & retail | 2026 |
| Myrix Investments Ltd | Real estate | 2024 |
| Myro Group Ltd | Real estate | 2025 |
| Mysensei Limited | Professional & scientific | 2023 |
| Mysig Ltd | Health & social care | 2024 |
| Mystery Records Limited | Information & communication | 2024 |
| MYT Medical Limited | Health & social care | 2022 |
| Mytag. Limited | Professional & scientific | 2012 |
| Mythio Limited | Wholesale & retail | 2026 |
| MZ Rentals Limited | Other services | 2018 |
| MZ1 Damp & Co Limited | Construction | 2025 |
| MZ1 Housing Limited | Real estate | 2025 |
| MZN Capital Ltd | Administrative & support | 2018 |
| N & S Harvey Plastering Limited | Construction | 2014 |
| N Chauhan Limited | Health & social care | 2023 |
| N Enterprises Limited | Wholesale & retail | 2018 |
| N G Surveying Limited | Professional & scientific | 2013 |
| N H Weld FAB Limited | Manufacturing | 2004 |
| N Kirkham Consulting Limited | Financial services | 2016 |
| N Trading Ltd | Wholesale & retail | 2017 |
| N&K Medical Ltd | Health & social care | 2024 |
| N-Concept AI Tech Ltd | Information & communication | 2026 |
| N-Tec Developments Ltd | Financial services | 2013 |
| N.Jurevicius Ltd | Transport & logistics | 2022 |
| N.W. Peachey Properties (West ROW) Limited | Real estate | 1976 |
| N7 Systems Ltd | Public administration | 2016 |
| NA ISW Ltd | Health & social care | 2026 |
| Nabz Properties Ltd | Real estate | 2026 |
| Nadatim Ltd | Wholesale & retail | 2024 |
| Naganari Ltd | Professional & scientific | 2018 |
| Nagula Limited | Transport & logistics | 2025 |
| Nahl Works Ltd | Wholesale & retail | 2022 |
| NAI Bubble Tea Limited | Hospitality | 2025 |
| Nails and Beauty Spa Limited | Other services | 2017 |
| Nails by Natasha Ltd | Other services | 2021 |
| Nails by TIA Ltd | Other services | 2025 |
| Najah Elite Limited | Energy | 2025 |
| Najah Vision Ltd | Energy | 2025 |
| Najoom Ltd. | Wholesale & retail | 2025 |
| Nanasnap Trading Limited | Manufacturing | 2024 |
| Nanny Manda Limited | Health & social care | 2022 |
| Nanovision Ltd | Professional & scientific | 2022 |
| Nantong Geld Technology Co Ltd | Information & communication | 2025 |
| Naomi's Limited | Other services | 1997 |
| Napier Automotive Limited | Professional & scientific | 2016 |
| Napier Propulsion Limited | Manufacturing | 2016 |
| NAR Valley Joinery Limited | Manufacturing | 2025 |
| Narborough RD Foods Ltd | Hospitality | 2026 |
| Narcissistic Abuse Trauma Clinic Ltd | Health & social care | 2025 |
| Narinja Ltd | Manufacturing | 2023 |
| Narrative ARC Ltd | Professional & scientific | 2026 |
| Narrow Margins Limited | Information & communication | 2024 |
| Nasha Enterprise Ltd | Wholesale & retail | 2024 |
| Nasmar Commerce Ltd | Wholesale & retail | 2026 |
| Nasthetics Ltd | Other services | 2023 |
| Nathan Ellis Yachting Limited | Manufacturing | 2017 |
| Nathan Page Building Services Ltd | Construction | 2025 |
| National Deals Limited | Wholesale & retail | 2016 |
| National Diagnostics Ltd | Health & social care | 2024 |
| National Enterprise Network | Professional & scientific | 1993 |