| MJ Optometry Ltd | Health & social care | 2014 |
| MJ Racing (Slotcars) Limited | Wholesale & retail | 2012 |
| Mj&T Property Group Limited | Real estate | 2025 |
| MJA Pharma Services Ltd | Wholesale & retail | 2021 |
| MJB Group NW Ltd | Construction | 2026 |
| MJB Property Developments Ltd | Real estate | 2022 |
| Mjb-Projects Ltd | Construction | 2025 |
| MJD (PVT) Limited | Other services | 2018 |
| MJD Driver Services Ltd | Transport & logistics | 2024 |
| MJD Sailing Ltd | Education | 2024 |
| MJF Commercial Window Cleaning Ltd | Administrative & support | 2022 |
| MJG Entertainments Limited | Hospitality | 2021 |
| Mjgtech Ltd | Information & communication | 2019 |
| MJL Developments NW Limited | Real estate | 2017 |
| Mjl(Global)Logistics Limited | Transport & logistics | 2015 |
| MJM Bolton Limited | Administrative & support | 2016 |
| MJM Fabrications Ltd | Manufacturing | 2025 |
| MJP Transport Services Limited | Transport & logistics | 2023 |
| Mjpr Construction Limited | Construction | 2021 |
| Mjpr Logistics Limited | Transport & logistics | 2021 |
| MJR Software Ltd | Information & communication | 2025 |
| Mjrrr Holdings Ltd | Financial services | 2023 |
| MJS (Bolton) Joinery Limited | Construction | 2019 |
| MJS Building Contractors Ltd | Construction | 2022 |
| MJS Garage Doors Limited | Construction | 2019 |
| MJS Networks Limited | Information & communication | 2010 |
| MJS Transport Services Ltd | Transport & logistics | 2025 |
| Mjsc (Wigan) Limited | Information & communication | 2019 |
| MK Agency Services Ltd | Administrative & support | 2019 |
| MK Andrew Properties Limited | Real estate | 2022 |
| MK Autohire Ltd | Administrative & support | 2023 |
| MK Buildings & Construction Ltd | Construction | 2024 |
| MK Electrics (NW) Ltd | Professional & scientific | 2017 |
| MK Electrics Solutions Limited | Professional & scientific | 2021 |
| MK Electronic Solutions Limited | Professional & scientific | 2009 |
| MK Foods MCR Limited | Hospitality | 2025 |
| MK Gandhi Accountancy Ltd | Professional & scientific | 2017 |
| MK Health Care Services Ltd | Administrative & support | 2022 |
| MK Investments (NW) Ltd | Real estate | 2025 |
| MK Northwest Services Ltd | Construction | 2021 |
| MK Pharma Services Ltd | Health & social care | 2022 |
| MK Plastics Limited | Manufacturing | 2010 |
| MK Shop Ltd | Wholesale & retail | 2025 |
| MK Strategic Solutions Ltd | Information & communication | 2024 |
| MK Vehicle Solutions Limited | Administrative & support | 2019 |
| MKA Assessors Limited | Other services | 2015 |
| MKA Executive Chauffeurs Ltd | Transport & logistics | 2025 |
| MKA Properties Manchester Ltd | Real estate | 2019 |
| Mkas Consultancy Ltd | Professional & scientific | 2024 |
| MKC Northern Limited | Extraterritorial | 2006 |
| MKH Properties NW Ltd | Real estate | 2018 |
| MKJ Transport Ltd | Transport & logistics | 2017 |
| MKN Trading Ltd | Wholesale & retail | 2023 |
| Mkom Limited | Real estate | 2023 |
| Mkoma Wemhiri Limited | Transport & logistics | 2025 |
| MKW Heating Controls Ltd | Wholesale & retail | 1998 |
| ML Chimney Sweeps Limited | Administrative & support | 2025 |
| ML Hayes Limited | Administrative & support | 2016 |
| ML Media Services Limited | Information & communication | 2009 |
| ML Pubs the Harrow Ltd | Hospitality | 2023 |
| ML Roofing (Northwest) Limited | Construction | 2026 |
| Mlaw Services Limited | Transport & logistics | 2022 |
| MLB Digital Ventures Ltd | Information & communication | 2026 |
| Mlbh Limited | Professional & scientific | 2022 |
| MLH Engineering (NW) Limited | Professional & scientific | 2023 |
| MLI Mgmt Ltd | Professional & scientific | 2019 |
| MLJ14 Limited | Arts & recreation | 2024 |
| MLM Property Holdings Ltd | Real estate | 2024 |
| MLM Property Limited | Administrative & support | 2018 |
| MLM Property Sourcing Ltd | Real estate | 2024 |
| Mlma Estates Limited | Real estate | 2024 |
| MLN (Land and Properties) Ltd | Professional & scientific | 2013 |
| Mlpathan Consultancy Ltd | Administrative & support | 2023 |
| Mlpgm Limited | Construction | 2025 |
| MLR Roofing Limited | Construction | 2017 |
| MLR Whittaker Transport Ltd | Transport & logistics | 2024 |
| Mlsm Home Removals Limited | Transport & logistics | 2025 |
| MLT Construction Solutions Limited | Professional & scientific | 2016 |
| MM Audit & Advisory Ltd | Professional & scientific | 2026 |
| MM Design Tech Ltd | Construction | 2019 |
| MM Estates (Bolton) Ltd | Real estate | 2024 |
| MM Nail Eyelash Beauty Ltd | Other services | 2024 |
| MM Optical Glazing Limited | Manufacturing | 2019 |
| MM Property Repairs & Maintenance Ltd | Real estate | 2020 |
| MM Trading Enterprise Ltd | Wholesale & retail | 2024 |
| MM Voyages Ltd | Administrative & support | 2025 |
| Mm&V Ltd | Real estate | 2024 |
| MMA Packing Limited | Wholesale & retail | 2020 |
| MMA Projects Ltd | Information & communication | 2023 |
| Mmap Investments Limited | Real estate | 2024 |
| Mmarbl Ltd | Real estate | 2020 |
| MMD Optical Ltd | Health & social care | 2018 |
| Mmedk ENT Ltd | Health & social care | 2022 |
| Mmeowmmia Ltd | Information & communication | 2023 |
| MMM Corporate Group Ltd | Hospitality | 2023 |
| MMM Services Bolton Ltd | Wholesale & retail | 2025 |
| MMP Dental Ltd | Health & social care | 2018 |
| MMP Fire & Security Group Limited | Financial services | 2024 |
| MMP Fire & Security Limited | Construction | 2011 |
| MMP Group Limited | Financial services | 2016 |