| Mike's One Company Limited | Health & social care | 2015 |
| Mike's Plumbing Services Limited | Construction | 2022 |
| Mikrobyte Limited | Information & communication | 2015 |
| Miks Motors Ltd | Wholesale & retail | 2017 |
| Mila Investment Ltd | Real estate | 2022 |
| Milan Cleaning Service Limited | Administrative & support | 2018 |
| Milan Convenience Store Ltd | Wholesale & retail | 2025 |
| Milano Cushions Ltd | Manufacturing | 2018 |
| Milano European Foods Limited | Wholesale & retail | 2015 |
| Milano Promotions Limited | Real estate | 2003 |
| Milano Textiles Ltd | Manufacturing | 2021 |
| Milax Coffee Club Ltd | Hospitality | 2025 |
| Mild Frenzy Limited | Administrative & support | 2016 |
| Mile Ahead Driving Academy Ltd | Education | 2025 |
| Miles Rudling Consultants Limited | Financial services | 2008 |
| Milk & Honeyy Limited | Wholesale & retail | 2024 |
| Milk and Honey of Harrogate (2024) Ltd | Wholesale & retail | 2024 |
| Mill Hills Management Limited | Real estate | 2007 |
| Mill Lane Auto Parts Ltd | Wholesale & retail | 2025 |
| Mill Side Developments Limited | Construction | 2018 |
| Mill ST Convenience Ltd | Wholesale & retail | 2022 |
| Mill West Freehold Reversion Limited | Real estate | 2012 |
| Millan Centre | Education | 1988 |
| Millenium Promotion Ltd | Transport & logistics | 2017 |
| Millennium Shipping and Marine Services UK Ltd | Wholesale & retail | 2024 |
| Miller Knight (Bradford) Ltd | Administrative & support | 2016 |
| Miller Knight Developments Ltd | Administrative & support | 2015 |
| Millers Business Park Ltd | Real estate | 2025 |
| Millers Motors & Caravans Ltd | Wholesale & retail | 2022 |
| Millew Ltd | Transport & logistics | 2013 |
| Millibricks Ltd | Real estate | 2020 |
| Millis Beauty Ltd | Professional & scientific | 2020 |
| Millside (Wilsden) Management Company Limited | Households | 2010 |
| Millysbeautybar Bradford Ltd | Other services | 2026 |
| Milon Atelier Ltd | Wholesale & retail | 2026 |
| Milred Black Limited | Manufacturing | 2025 |
| Mimis Optics Limited | Health & social care | 2021 |
| Mimlr Ltd | Health & social care | 2024 |
| Mimshealthcare Limited | Health & social care | 2013 |
| Mina Quality Limited | Hospitality | 2019 |
| Minahil Car Hire Limited | Administrative & support | 2015 |
| Minato Pizzeria Ltd | Hospitality | 2023 |
| Mind & Body Therapeutic Strategies by Aleema C.I.C. | Education | 2023 |
| Mind & Body Wellbeing Strategies CIC | Health & social care | 2026 |
| Mind in Bradford | Health & social care | 2011 |
| Mind Scape Market Limited | Wholesale & retail | 2025 |
| Mind the GAP | Arts & recreation | 1989 |
| Mindful Connection Services Ltd | Health & social care | 2025 |
| Mindlevate AI Limited | Wholesale & retail | 2025 |
| Minds in Depth Ltd | Education | 2024 |
| Mindsprak Ltd | Wholesale & retail | 2024 |
| Mindways Limited | Health & social care | 2022 |
| Mindwire Consulting Ltd | Information & communication | 2025 |
| Minerva Properties Investment Ltd | Real estate | 2026 |
| Minet Avenue Ltd | Real estate | 2024 |
| Mingshu Ltd | Health & social care | 2012 |
| Minhal Limited | Administrative & support | 2015 |
| Mini Diggers UK Ltd | Construction | 2025 |
| Mini Valeting Centre Ltd | Administrative & support | 2024 |
| Mini's Gadgets Ltd | Wholesale & retail | 2026 |
| Minikai Limited | Wholesale & retail | 2017 |
| Mink Shipping Limited | Transport & logistics | 1977 |
| Minka MMU Ltd | Real estate | 2025 |
| Mint Consortium Ltd | Real estate | 2024 |
| Mint Home Projects & Developments Limited | Construction | 2021 |
| Mint Research Limited | Administrative & support | 2009 |
| Minted Motors Ltd | Wholesale & retail | 2020 |
| Minute Investments Ltd | Other services | 2022 |
| MIP Batley Limited | Hospitality | 2026 |
| MIP BFD Limited | Hospitality | 2026 |
| Mipa Group Limited | Other services | 2020 |
| MIR Legal Ltd | Professional & scientific | 2012 |
| MIR Property Holdings LLP | | 2011 |
| MIR PUR Enterprises Ltd | Wholesale & retail | 2025 |
| Mirabel Holdings Ltd | Administrative & support | 2025 |
| Miracle House Ltd | Health & social care | 2020 |
| Miracle Makers Limited | Administrative & support | 2024 |
| Mirage Events & Catering Ltd | Hospitality | 2010 |
| Mirage Services Limited | Hospitality | 2019 |
| Miraj Holmfirth Limited | Hospitality | 2023 |
| Miraj Traders Ltd | Wholesale & retail | 2025 |
| Mirandola Assets Limited | Other services | 2002 |
| Miravon Agency Limited | Health & social care | 2025 |
| MIRDITA75 Limited | Hospitality | 2026 |
| Mirha Foods (Bradford) Limited | Wholesale & retail | 2024 |
| Miriam Limited | Professional & scientific | 2025 |
| Miron Transport Ltd | Transport & logistics | 2015 |
| Mirpur Cricket Club CIC | Arts & recreation | 2026 |
| Mirpur Jewellers Limited | Manufacturing | 2019 |
| Mirpur Lajawab Catering Limited | Hospitality | 2016 |
| Mirpur Travel and Tours Ltd | Administrative & support | 2025 |
| Mirror Mirror Beauty Ltd | Other services | 2022 |
| Mirza Consulting Services Ltd | Professional & scientific | 2022 |
| Mirza Travels (Bradford) Ltd. | Administrative & support | 1997 |
| Misam Delivery Limited | Transport & logistics | 2025 |
| Misbah Healthcare Ltd | Health & social care | 2022 |
| Misf Traders Limited | Wholesale & retail | 2025 |
| Miskovic Delivery Service Limited | Transport & logistics | 2025 |
| Miss Lami Ltd | Wholesale & retail | 2026 |
| Miss Miele Aesthetics Ltd | Other services | 2022 |