| Landing Designs Ltd | Manufacturing | 2024 |
| Laundry Engineering Services Ltd | Manufacturing | 2015 |
| LB Advisory Limited | Professional & scientific | 2013 |
| Ledbury Russell Limited | Financial services | 2016 |
| Leever`S Painters & Decorators Limited | Construction | 2003 |
| LGW Engineering Limited | Professional & scientific | 2007 |
| Lilia's Z Ltd | Other services | 2022 |
| Lineside Structure Maintenance Limited | Construction | 1997 |
| Lion Steel Equipment Limited | Manufacturing | 1981 |
| Listening Dog Media Limited | Information & communication | 2019 |
| Literacy Planet Limited | Education | 2007 |
| Little Miss Sew'N'Sew Ltd | Wholesale & retail | 2017 |
| LKM Nationwide Ltd | Professional & scientific | 2022 |
| LMS Rail Limited | Other services | 2016 |
| Longford Wharf Management Limited | Households | 1997 |
| Longton Developments Ltd | Construction | 2018 |
| Love Ocean Group Ltd | Wholesale & retail | 2019 |
| Lucius Brutus Ltd | Information & communication | 2022 |
| Lucys Little Bake House Limited | Manufacturing | 2020 |
| Luxurious Limited | Households | 1984 |
| Lynbrook Insurance Services Limited | Financial services | 2002 |
| M a MC 2 Ltd | Information & communication | 2023 |
| M J Wharton (Cumbria) Limited | Manufacturing | 2004 |
| M.J.R Medical Limited | Health & social care | 2022 |
| M.R. Tool (Atherstone) Limited | Manufacturing | 1991 |
| M1 Kampus Ltd | Wholesale & retail | 2019 |
| M6 Hydraulics Limited | Professional & scientific | 2012 |
| Macavity Properties Limited | Real estate | 2001 |
| Maddocks Holdings Limited | Administrative & support | 2015 |
| Made Original Limited | Hospitality | 2017 |
| Maintek (Nw)Limited | Wholesale & retail | 2002 |
| Maitland Developments Limited | Construction | 2013 |
| Maltford Limited | Real estate | 1996 |
| Manchester Smoke House Ltd | Wholesale & retail | 2016 |
| Manchester Used Car Inspection Centre Limited | Wholesale & retail | 2002 |
| Manchester Virtual Academy Ltd | Education | 2022 |
| Manchester Vision Limited | Health & social care | 2004 |
| Manning Rushworth Ltd. | Financial services | 2003 |
| MAP Contracts Ltd | Administrative & support | 2004 |
| Mapleville Limited | Extraterritorial | 2006 |
| Marina Salon by FKZ Limited | Other services | 2023 |
| Mark Sheridan Consultancy Ltd | Professional & scientific | 2016 |
| Market Ready Ltd | Professional & scientific | 2007 |
| Marmaris MCR Ltd | Wholesale & retail | 2021 |
| Martina Limited | Manufacturing | 1996 |
| Marvitech Ltd | Wholesale & retail | 2020 |
| Masarex Ltd | Transport & logistics | 2024 |
| Matrel Solutions Limited | Information & communication | 2007 |
| Matthew Hart Construction Ltd | Construction | 2019 |
| Mbaya Ltd | Health & social care | 2017 |
| Mckee Holdings Limited | Professional & scientific | 2017 |
| Mcnamara Joinery Limited | Manufacturing | 2009 |
| Mdmotion Ltd | Other services | 2025 |
| MED Builders Limited | Construction | 2017 |
| Meiyan Trading Ltd | Wholesale & retail | 2022 |
| Metalica Engineering Limited | Construction | 2020 |
| MGL Limited | Professional & scientific | 2003 |
| MH Eyecare Ltd | Health & social care | 2023 |
| Midel & Mivolt Fluids Limited | Manufacturing | 2022 |
| Mike Livingstone Associates Limited | Other services | 2015 |
| Millersdale Projects Ltd | Professional & scientific | 2017 |
| MK Electrical Northwest Ltd | Manufacturing | 2022 |
| Mobile Structures Management Ltd | Administrative & support | 2010 |
| Mobility Conversions Limited | Wholesale & retail | 2001 |
| Modec Fine Arts Limited | Manufacturing | 1979 |
| Morpheus Lending SPV3 Ltd | Financial services | 2025 |
| MSC / Copperflow Ltd | Manufacturing | 1988 |
| MTS Hydraulics & Pneumatic Supplies Limited | Professional & scientific | 2020 |
| Mulberry GBC Ltd | Construction | 1983 |
| Murrin Law Limited | Professional & scientific | 2017 |
| My New Smile (Altrincham) Limited | Health & social care | 2022 |
| MZZ Ventures Limited | Wholesale & retail | 2026 |
| N Pharm Solutions Limited | Professional & scientific | 2006 |
| Namto Limited | Hospitality | 2017 |
| Narrow Traders Limited | Wholesale & retail | 2026 |
| Ndykenzo Heating Services Ltd | Manufacturing | 2025 |
| New Hall Lodge Management Company Limited | Real estate | 2004 |
| New Leaf Bidco Limited | Other services | 2017 |
| New Link Properties Ltd | Hospitality | 2023 |
| Newydd Contracting Ltd | Construction | 2018 |
| Nexus Contractor Accounting Ltd | Professional & scientific | 2018 |
| Nidra AG Ltd | Health & social care | 2020 |
| Nigel Poulton Ltd | Information & communication | 2019 |
| NK Finance and Recruitment Consultancy Ltd. | Administrative & support | 2012 |
| NLW Investments Limited | Real estate | 2017 |
| Noonebox Limited | Financial services | 2017 |
| North East Hospices Lottery Limited | Arts & recreation | 1998 |
| North West Private Ambulance Liason Services Limited | Transport & logistics | 2012 |
| Northern Manufacturing Limited | Manufacturing | 2021 |
| Northmeadow Limited | Construction | 2005 |
| Nosi Solutions Limited | Professional & scientific | 2017 |
| Nova Costs Limited | Wholesale & retail | 2013 |
| Novare South West Holdings Ltd | Real estate | 2019 |
| Nubyan Trading UK Ltd | Manufacturing | 2019 |
| NW3 Physio Limited | Health & social care | 2017 |
| Nyava Consultancy Ltd | Health & social care | 2022 |
| OD Housing Group Ltd | Real estate | 2023 |
| Offspring Investments Limited | Real estate | 2002 |
| OGL Limited | Professional & scientific | 2005 |
| Omaintec Academy-Uk Ltd | Education | 2024 |