| MR Launderette CCL Ltd | Other services | 2024 |
| MR N E Smith Ltd | Real estate | 2021 |
| MR Venkat Cardiac Surgery Limited | Health & social care | 2019 |
| MR Voltage Electricals Limited | Manufacturing | 2026 |
| Mrgreensburnley Ltd | Arts & recreation | 2026 |
| MRJ Supplies Ltd | Wholesale & retail | 2021 |
| MS Building & Plumbing Ltd | Construction | 2021 |
| MSA Developments NW Limited | Construction | 2024 |
| MSJ Services Ltd | Construction | 2018 |
| MSW Hewetsons Limited | Real estate | 2018 |
| MT Townsend Properties Limited | Real estate | 2019 |
| MT3 Fitness Limited | Wholesale & retail | 2015 |
| MT3 Health & Performance LAB Ltd | Arts & recreation | 2021 |
| MTA Computing Services Limited | Information & communication | 2011 |
| MTM Digital Ventures Ltd | Wholesale & retail | 2026 |
| MTS Support Ltd | Administrative & support | 2023 |
| MU Energy Ltd | Energy | 2026 |
| Mubiao Limited | Wholesale & retail | 2021 |
| Muddy Boots and Puddle Ducks Ltd | Wholesale & retail | 2025 |
| Muddy Boots and Puddle Ducks Tea Room Ltd | Hospitality | 2024 |
| Muddykickz Limited | Wholesale & retail | 2022 |
| Muhammadians Limited | Wholesale & retail | 2021 |
| Multilink Traders Ltd | Wholesale & retail | 2023 |
| Multipack Group Ltd | Transport & logistics | 2017 |
| Multipack Media Ltd | Manufacturing | 2017 |
| Murano Eyewear Limited | Wholesale & retail | 1998 |
| Murphys Taxis Limited | Transport & logistics | 2006 |
| Murray Family Holdings Ltd | Wholesale & retail | 2026 |
| Mushtaq Online Services Ltd | Wholesale & retail | 2023 |
| Must Make Films Limited | Information & communication | 2016 |
| MW Electrical (Lancs) Ltd | Construction | 2015 |
| MWS Training Ltd | Administrative & support | 2006 |
| My Flexible Storage Space Ltd | Transport & logistics | 2025 |
| My Home NOW Limited | Real estate | 2021 |
| My Home Supported Living Ltd | Health & social care | 2024 |
| My Postbox Ltd | Transport & logistics | 2018 |
| My Psych Expert Ltd | Information & communication | 2024 |
| My Psych Ltd | Information & communication | 2024 |
| My REC Team Ltd | Administrative & support | 2024 |
| My Shayla Limited | Wholesale & retail | 2025 |
| My Social Care Consultancy Ltd | Professional & scientific | 2022 |
| My Thai Spa Limited | Other services | 2026 |
| Mycar Motors Ltd | Wholesale & retail | 2023 |
| Mydiy Limited | Wholesale & retail | 2022 |
| Mynewsofaburnley Ltd | Wholesale & retail | 2026 |
| Mynyddra Ltd | Wholesale & retail | 2025 |
| MZ20 Ltd | Professional & scientific | 2024 |
| MZA Logistics Ltd | Transport & logistics | 2019 |
| MZM Haulage Ltd | Transport & logistics | 2025 |
| MZN Dent Limited | Health & social care | 2024 |
| N & R OFF License Ltd | Wholesale & retail | 2021 |
| N Islam Ltd | Health & social care | 2012 |
| N Nelson and Associates Limited | Real estate | 2024 |
| N Wilkinson Design Ltd | Professional & scientific | 2013 |
| N.Dar Ltd | Wholesale & retail | 2022 |
| N65 Holdings Limited | Financial services | 2023 |
| NA Capital Ltd | Real estate | 2024 |
| NAAFIAH212 Ltd | Hospitality | 2024 |
| Nagusia Limited | Transport & logistics | 2024 |
| Nailhour Ltd | Wholesale & retail | 2025 |
| Najib Properties Ltd | Real estate | 2019 |
| NAM Home Delivery and Cleaning Services Ltd | Administrative & support | 2023 |
| Namaste Catering Ltd | Hospitality | 2020 |
| Namhealthcare Solutions Ltd | Health & social care | 2023 |
| Nan's Place Cafe Ltd | Hospitality | 2021 |
| Nana’S Nursery Ltd | Health & social care | 2025 |
| Natalia and Niva Limited | Other services | 2018 |
| Nathan MK Ltd | Real estate | 2024 |
| Nathan Neary Logistics Ltd | Transport & logistics | 2025 |
| Natolina Ltd | Real estate | 2017 |
| Natural Plus Ltd | Other services | 2024 |
| Nature Glow Beauty Ltd | Wholesale & retail | 2024 |
| NAV Secure Limited | Administrative & support | 2025 |
| Nav-Igate Motors Ltd | Transport & logistics | 2017 |
| Navcart Limited | Wholesale & retail | 2025 |
| Nayara Homes Ltd | Real estate | 2026 |
| NB Engineering Ltd | Manufacturing | 2016 |
| NBC (Lancs) Ltd | Wholesale & retail | 2021 |
| NBC (North West) Limited | Construction | 2006 |
| Nber 5 Limited | Wholesale & retail | 2025 |
| NBM Supplies Limited | Wholesale & retail | 2020 |
| ND Activewear Ltd | Wholesale & retail | 2025 |
| Neat Lets Limited | Real estate | 2018 |
| Neil and Hosker Properties Ltd | Real estate | 2017 |
| Neil Estment Limited | Wholesale & retail | 2014 |
| Neil Holt Window Cleaning Ltd | Administrative & support | 2019 |
| Nelson Auto Rentals Ltd | Administrative & support | 2022 |
| Nelson Football Club Limited | Arts & recreation | 2012 |
| Nelson Microfilm Ltd | Information & communication | 1998 |
| Nemac Travel Ltd | Administrative & support | 2020 |
| Nerdwick Ltd | Information & communication | 2014 |
| Nesh Consultancy Ltd | Hospitality | 2017 |
| Net.Gain (Marketing) Limited | Administrative & support | 1994 |
| Netbeam Technology Limited | Wholesale & retail | 2025 |
| Network China Ltd | Professional & scientific | 2004 |
| Neuralink Ltd | Professional & scientific | 2026 |
| Neuro-Sparks Business Solutions Ltd | Professional & scientific | 2023 |
| Neuro-Sparks Support CIC | Administrative & support | 2024 |
| Neuro-Sparks Training Solutions Ltd | Administrative & support | 2026 |
| Neutrad Limited | Manufacturing | 2016 |