| Midge Consulting Ltd | Manufacturing | 2019 |
| Midland Boat Blacking Limited | Manufacturing | 2025 |
| Midland Build Clean Limited | Administrative & support | 2016 |
| Midland Car & Commercial Paints Limited | Manufacturing | 2013 |
| Midland Carpentry & Joinery Services Limited | Construction | 2003 |
| Midland Crest Limited | Real estate | 2024 |
| Midland Elements Group Limited | Financial services | 2015 |
| Midland Elements Holding Limited | Financial services | 2021 |
| Midland Estates (Stoke) Limited | Extraterritorial | 2015 |
| Midland Holdings (Stoke) Limited | Professional & scientific | 2015 |
| Midland Painting Contracts Ltd | Construction | 2011 |
| Midland Plastering Limited | Construction | 2016 |
| Midland Prestige Hire Limited | Administrative & support | 2012 |
| Midland Research Ltd | Professional & scientific | 2021 |
| Midlands Accident Specialists Ltd | Financial services | 2025 |
| Midlands Commerce Limited | Wholesale & retail | 2025 |
| Midlands Diamond Drilling & Sawing Limited | Construction | 2017 |
| Midlands Drainage Solutions Ltd | Other services | 2024 |
| Midlands Electrical Fire & Security Ltd | Construction | 2004 |
| Midlands Electrical Services Ltd | Construction | 2023 |
| Midlands Electronic Solutions Limited | Manufacturing | 2020 |
| Midlands Elite Bars Ltd | Hospitality | 2019 |
| Midlands Integrated Support Services Ltd | Administrative & support | 2025 |
| Midlands Motorcycle Training Limited | Education | 2025 |
| Midlands Power Networks Limited | Construction | 2004 |
| Midlands Trade Ltd | Wholesale & retail | 2026 |
| Midnorth Ecology Ltd | Professional & scientific | 2020 |
| Midway Castle Ltd | Hospitality | 2025 |
| Midway Contract Electronics Limited | Manufacturing | 2020 |
| Midway Design Services Ltd | Professional & scientific | 2017 |
| Midway Group of Companies Ltd | Extraterritorial | 2019 |
| Midway H & S Holdings Ltd | Extraterritorial | 2024 |
| Midway Procurement Ltd | Wholesale & retail | 2022 |
| Mier Heath Post Ltd | Wholesale & retail | 2021 |
| Mijad Rashid Properties Ltd | Real estate | 2023 |
| Mike Brown Poultry Limited | Wholesale & retail | 2021 |
| Mike Satur Ltd | Wholesale & retail | 2006 |
| Mila's Soapery Ltd | Wholesale & retail | 2025 |
| Milana Healthcare Ltd | Health & social care | 2023 |
| Mile Engineers Ltd | Construction | 2020 |
| Miles Cleaner Ltd | Administrative & support | 2021 |
| Miles Green Garage Limited | Wholesale & retail | 2008 |
| Milesformoney Ltd | Transport & logistics | 2026 |
| Milk and Honey Deli Ltd | Wholesale & retail | 2015 |
| Millennium Motors (Stoke) Limited | Wholesale & retail | 2003 |
| Millennium Wealth Management Limited | Financial services | 2009 |
| Miller and Bond Relocation Homes Ltd | Real estate | 2020 |
| Miller Car Hire Limited | Administrative & support | 2020 |
| Miller Invest Limited | Financial services | 2020 |
| Miller Plant Services Ltd | Construction | 2016 |
| Miller&Co Creative Ltd | Administrative & support | 2008 |
| Millers Race (Milton) Management Company Limited | Households | 1995 |
| Millie Freight Ltd | Transport & logistics | 2021 |
| Millies Desserts Ltd | Hospitality | 2026 |
| Millward & Co Properties Ltd | Real estate | 2021 |
| Millward Holdings Ltd | Financial services | 2007 |
| Millward Interiors Limited | Construction | 2008 |
| Milmedical Ltd | Health & social care | 2017 |
| Milroc Limited | Health & social care | 2023 |
| Milton Caravan Storage Limited | Other services | 2016 |
| Milton Chippy Ltd | Hospitality | 2023 |
| Milton Haulage Ltd | Transport & logistics | 2020 |
| Milton PRE School CIC | Health & social care | 2010 |
| Milton Store Ltd | Wholesale & retail | 2026 |
| Milton United FC 2015 Ltd | Arts & recreation | 2015 |
| Milu Trading Ltd | Transport & logistics | 2020 |
| Milwalk Kove Ltd | Construction | 2020 |
| Mily Designer Boutique Ltd | Wholesale & retail | 2019 |
| MIM Trans Ltd | Transport & logistics | 2023 |
| Mincrete Limited | Manufacturing | 1985 |
| Mind Blocks Ltd | Education | 2025 |
| Mindenhol Ltd | Administrative & support | 2026 |
| Mindshield CIC | Health & social care | 2025 |
| Ming LC Ltd | Information & communication | 2026 |
| Mini Motors Ltd | Wholesale & retail | 2019 |
| Minimicks Limited | Extraterritorial | 2015 |
| Ministry of Trend Ltd | Wholesale & retail | 2020 |
| Minka Property Group Ltd | Real estate | 2023 |
| Minshall Court (2006) Property Management Limited | Other services | 2006 |
| Mint Security Limited | Administrative & support | 2025 |
| Minwas Ltd | Wholesale & retail | 2023 |
| Miodek Ltd | Wholesale & retail | 2022 |
| MIP Property Management Ltd | Real estate | 2023 |
| MIR Electrical Ltd | Construction | 2022 |
| Mira Transport Ltd | Transport & logistics | 2025 |
| Mirada Services Ltd | Health & social care | 2016 |
| Mirage Group Holdings Limited | Administrative & support | 2013 |
| Mirage Ltd | Manufacturing | 2005 |
| Mirage Rail Limited | Extraterritorial | 2009 |
| Mirch Ltd | Hospitality | 2021 |
| Mirchi Indian Restaurant Limited | Hospitality | 2016 |
| Mirevas Ltd | Transport & logistics | 2018 |
| Mirrorball Films (Farm) Limited | Information & communication | 2021 |
| Mirrorball Films (N4) Limited | Information & communication | 2015 |
| Mirrorball Films (Nativity) Limited | Information & communication | 2007 |
| Mirrorball Films Limited | Information & communication | 2008 |
| Mishi Technologies Ltd | Information & communication | 2011 |
| Misola Group Ltd | Information & communication | 2025 |
| Misskunafa Ltd | Manufacturing | 2025 |
| Mister Drippy Limited | Wholesale & retail | 2020 |