| Morsepoint Ltd | Wholesale & retail | 2023 |
| Mortimer Fine Finishes Ltd | Extraterritorial | 2025 |
| Mortz Agri Ltd | Wholesale & retail | 2026 |
| Mosaica Limited | Professional & scientific | 2010 |
| Mosaica Properties Ltd | Real estate | 2013 |
| Motorbody Accident Repair Centre Limited | Wholesale & retail | 2002 |
| Mount Gardens (Morecambe) Management Co. Limited | Households | 2001 |
| MOVE2BUTE Ltd | Real estate | 2016 |
| Movementus Dance Limited | Arts & recreation | 2026 |
| MP Electrical Maintenance Ltd | Construction | 2019 |
| MP Haulage Limited | Transport & logistics | 2006 |
| MP Property Maintenance Ltd | Real estate | 2019 |
| Mpirical Limited | Information & communication | 2002 |
| MPW (PI) Ltd | Real estate | 2021 |
| MR Amal Bose Ltd | Health & social care | 2018 |
| MR D'S Delivery Ltd | Hospitality | 2024 |
| MR Joinery and Building Ltd | Construction | 2025 |
| MR Nice Distribution Limited | Information & communication | 2008 |
| MR T Millar Ltd | Health & social care | 2017 |
| MR Wang Limited | Hospitality | 2015 |
| MRL Services (NW) Limited | Construction | 2009 |
| MS Investment Properties Limited | Construction | 2026 |
| MS Sports Coaching Limited | Education | 2022 |
| MSA Health Limited | Health & social care | 2026 |
| Msitibb Ltd | Health & social care | 2023 |
| MSL Firecheck Ltd | Manufacturing | 1997 |
| Mste Management Company Limited | Real estate | 2022 |
| Msvd Ltd | Information & communication | 2026 |
| MT Subsea Ltd | Professional & scientific | 2014 |
| Mtda Performing Arts Limited | Arts & recreation | 2024 |
| MTJ Catering Services Limited | Hospitality | 2024 |
| Mulberry Asset Finance Limited | Professional & scientific | 2020 |
| Mulgrew PUB Co Ltd | Hospitality | 2025 |
| Mulgrew Taverns Limited | Hospitality | 2020 |
| Multicook LA Limited | Hospitality | 2024 |
| Multitrade Restoration NW Ltd | Construction | 2017 |
| Mung MEE Enterprises Ltd | Hospitality | 2010 |
| Munny Academy Limited | Administrative & support | 2023 |
| Munny Group Limited | Professional & scientific | 2023 |
| Murbrook Limited | Administrative & support | 2007 |
| Murray Jones Adventures Ltd | Hospitality | 2026 |
| Murton & Co. Limited | Professional & scientific | 2010 |
| Mustafa Aftab Ltd | Health & social care | 2019 |
| Mustafa Property Hodlings Ltd | Real estate | 2021 |
| Mvas Limited | Health & social care | 2024 |
| MVS (Lancashire) Ltd | Professional & scientific | 2026 |
| MWB Sandblasting Ltd | Construction | 2025 |
| MXL Capital Ltd | Information & communication | 2025 |
| MXL Group Ltd | Financial services | 2025 |
| My Avocado Lunch Box Ltd | Hospitality | 2025 |
| My Place Limited | Real estate | 2017 |
| My Unique Finds Ltd | Wholesale & retail | 2025 |
| Myvenue Limited | Hospitality | 2019 |
| N D Robinson Construction Limited | Construction | 2021 |
| N R D S Property Limited | Real estate | 2019 |
| N S Peries Properties Ltd | Real estate | 2023 |
| Naba Arabic School CIC | Education | 2021 |
| Nali's Offy Ltd | Wholesale & retail | 2025 |
| Nana V'S Ltd | Hospitality | 2025 |
| Nanopore Solutions Ltd | Professional & scientific | 2016 |
| Naomi Waite Aesthetics Ltd | Other services | 2004 |
| Naomi Waite Skin Architex Ltd | Other services | 2024 |
| Napley Properties Limited | Real estate | 2021 |
| Narr Lodge Management Company Limited | Professional & scientific | 2001 |
| Natfarm Limited | Agriculture & fishing | 1979 |
| National Autistic Taskforce Ltd | Professional & scientific | 2018 |
| National Performing Arts Alliance Ltd | Education | 2021 |
| Nationwide Caravans Limited | Hospitality | 2014 |
| Natural Touch Beauty Ltd | Other services | 2026 |
| Naughtipidgins Nest Limited | Wholesale & retail | 2013 |
| NB Dance Studio Limited | Arts & recreation | 2026 |
| Nbps Wellbeing Solutions Ltd | Education | 2026 |
| NC Lancaster Ltd | Manufacturing | 2003 |
| ND Industries Ltd | Manufacturing | 2022 |
| ND Woodburn LOW Road Limited | Construction | 2025 |
| Neal Jones Furniture Ltd | Manufacturing | 2009 |
| Near Moss Farm Leisure Limited | Hospitality | 1992 |
| Nearly Waterside Inns Limited | Hospitality | 2001 |
| Neat Cleaning Services Ltd | Administrative & support | 2022 |
| Neat Commercial Cleaning Services Ltd | Administrative & support | 2023 |
| Neatnest Cleaning &Rentals Ltd | Real estate | 2025 |
| Neliya Limited Limited | Health & social care | 2019 |
| Nellys Property Developments Ltd Ltd | Real estate | 2025 |
| Neon Coaching & Consultancy Ltd | Professional & scientific | 2025 |
| Nether Hall Farm Limited | Agriculture & fishing | 1992 |
| Netherbeck Management Company Ltd | Households | 2018 |
| Network House Lancaster Ltd | Real estate | 2023 |
| Neurolytix Ltd | Wholesale & retail | 2024 |
| Nevis Consulting Ltd | Professional & scientific | 2022 |
| Nevrix Ltd | Information & communication | 2020 |
| New Fortune Star Limited | Hospitality | 2011 |
| New Life Lancaster | Health & social care | 2013 |
| New Lyph Ltd | Wholesale & retail | 2025 |
| Newfields Catering Services Limited | Hospitality | 2016 |
| Newhouse Leisure Homes Ltd | Construction | 2018 |
| Newlands Management (Morecambe) Limited | Households | 1997 |
| News Plus (N.W.) Ltd | Wholesale & retail | 2006 |
| Newton Flats Limited | Households | 2020 |
| Next Generation Forge Limited | Information & communication | 2024 |
| Next Stage Design Ltd | Information & communication | 2011 |