| Morpansho Limited | Health & social care | 2014 |
| Morrell Holdings Limited | Real estate | 2020 |
| Morrells Exterior Cleaning Ltd | Administrative & support | 2024 |
| Morris Automotive Limited | Wholesale & retail | 2025 |
| Morrow Agri Ltd | Agriculture & fishing | 2025 |
| Mortgage and Financial Services Ltd | Financial services | 2022 |
| Mortier EN Stamper (Bulwell) Limited | Financial services | 2010 |
| Mortier EN Stamper (Riddings) Limited | Wholesale & retail | 2010 |
| Mortier EN Stamper Limited | Wholesale & retail | 2006 |
| Mortier EN Stamper Properties Limited | Administrative & support | 2009 |
| Mortier EN Stamper Trading Limited | Wholesale & retail | 2011 |
| Mortimer Bros Limited | Administrative & support | 2020 |
| Morton Beverages Wholesale Services Limited | Wholesale & retail | 2025 |
| Mosaic Global Ltd | Real estate | 2020 |
| Mosham Limited | Real estate | 2024 |
| Moshy Limited | Wholesale & retail | 2024 |
| Mosmile UK Ltd | Wholesale & retail | 2023 |
| Moss Roof Solutions Ltd | Construction | 2023 |
| Moss Roofing & Cladding Solutions Ltd | Construction | 2024 |
| Moston M40 Ltd | Real estate | 2018 |
| Mother Hubbard's (Leeds Road) Ltd | Hospitality | 2022 |
| Mother Hubbard's (UK) Limited | Administrative & support | 2017 |
| Mother Hubbards Franchising UK Limited | Hospitality | 2025 |
| Mother Hubbards Royalties Limited | Hospitality | 2025 |
| Mother India UK Ltd | Hospitality | 2019 |
| Moti Roti Ltd | Hospitality | 2025 |
| Motifz Birmingham Ltd | Wholesale & retail | 2019 |
| Motifz Bridal Ltd | Wholesale & retail | 2019 |
| Motifz Clothing Limited | Wholesale & retail | 2018 |
| Motifz Group of Companies by ABU AL Khalil Limited | Wholesale & retail | 2019 |
| Motifz London Limited | Wholesale & retail | 2024 |
| Motifz Online Ltd | Wholesale & retail | 2020 |
| Motion Active Wear Limited | Wholesale & retail | 2026 |
| Motioniq Labs Limited | Information & communication | 2026 |
| MOTIV8 Car Garage Ltd | Wholesale & retail | 2025 |
| MOTIVE8-BRADFORD Ltd | Education | 2012 |
| Moto Carz Ltd | Wholesale & retail | 2024 |
| Moto Mania Ltd | Wholesale & retail | 2025 |
| Moto Merv UK Limited | Wholesale & retail | 2025 |
| Moto Porium Ltd | Wholesale & retail | 2019 |
| Moto Trade Limited | Wholesale & retail | 2026 |
| Motobk Ltd | Wholesale & retail | 2024 |
| Motogrip Limited | Manufacturing | 2024 |
| Motonav Ltd | Wholesale & retail | 2026 |
| Motoquip Ltd | Wholesale & retail | 2017 |
| Motor Admin Services Limited | Administrative & support | 2024 |
| Motor Barn (Commercial) Ltd | Wholesale & retail | 2026 |
| Motor Fetch Ltd | Transport & logistics | 2026 |
| Motor Hire Group Limited | Administrative & support | 2020 |
| Motor House of Bingley Limited | Wholesale & retail | 2014 |
| Motor House Slough Limited | Wholesale & retail | 2020 |
| Motorco Ltd | Wholesale & retail | 2023 |
| Motorize Ltd | Wholesale & retail | 2023 |
| Motors for Less Ltd | Wholesale & retail | 2016 |
| MOUD5 Ltd | Wholesale & retail | 2025 |
| Mouhameddieme Ltd | Transport & logistics | 2026 |
| Mountain Development Company Limited | Construction | 2005 |
| Mountain Properties Limited | Real estate | 2001 |
| Mountain Top Perspectives Limited | Professional & scientific | 2021 |
| Mountion Trading & Tires Repairing UK Limited | Wholesale & retail | 2020 |
| MOV Dance Theatre Ltd | Arts & recreation | 2025 |
| Move on Living Ltd | Hospitality | 2021 |
| Move Right Properties Ltd | Real estate | 2013 |
| Move UP Lettings Ltd | Households | 2016 |
| Move UP Money Transfers Limited | Financial services | 2025 |
| Move UP Property Services Ltd | Households | 2011 |
| Movemen Bradford Ltd | Other services | 2020 |
| Moveup Group Ltd | Real estate | 2018 |
| Movistage Rentals Limited | Administrative & support | 2026 |
| Mowef Ltd | Construction | 2020 |
| Mozaique Ltd | Wholesale & retail | 2025 |
| MP Batley Limited | Hospitality | 2025 |
| MP Bedrooms Ltd | Wholesale & retail | 2023 |
| MP BFD Limited | Hospitality | 2025 |
| MP Fit Gyms Limited | Arts & recreation | 2011 |
| MP Keighley Limited | Hospitality | 2022 |
| MP Kitchens Ltd | Wholesale & retail | 2023 |
| MP MCR Limited | Hospitality | 2025 |
| MP Mistry Ltd | Health & social care | 2019 |
| MP Unique Homes Ltd | Real estate | 2024 |
| MPA95 Limited | Administrative & support | 2025 |
| Mpcd Law Ltd | Administrative & support | 2025 |
| MPG Spares Limited | Wholesale & retail | 2023 |
| Mpharm Food Limited | Hospitality | 2026 |
| Mpharm Holdings Limited | Wholesale & retail | 2017 |
| Mpjl Care and Support Ltd | Health & social care | 2022 |
| Mpjl Plumbing Heating Electrical Ltd | Construction | 2022 |
| MQ Consultancy Ltd | Information & communication | 2018 |
| MQ Medic Ltd | Health & social care | 2024 |
| MQ Motor Trader Services Ltd | Wholesale & retail | 2024 |
| Mqwbookkeepingservices Ltd | Professional & scientific | 2025 |
| MR & MR Child Limited | Real estate | 2024 |
| MR & MR Property Investments Limited | Real estate | 2026 |
| MR B'S (BFD) Ltd | Hospitality | 2026 |
| MR B'S Tong ST Ltd | Hospitality | 2020 |
| MR BEZ Ltd | Manufacturing | 2024 |
| MR Blue BD Ltd | Wholesale & retail | 2026 |
| MR Bradfords West END Limited | Hospitality | 2019 |
| MR E Saver Ltd | Wholesale & retail | 2016 |
| MR Fenders Ltd | Hospitality | 2025 |