| Mfoods Limited | Hospitality | 2017 |
| Mfps (Nottm) Ltd | Administrative & support | 2017 |
| MFS Interiors Ltd | Wholesale & retail | 2025 |
| MFS Transport Limited | Wholesale & retail | 2001 |
| MFT Invest Limited | Real estate | 2013 |
| MG Autos Nottingham Limited | Wholesale & retail | 2026 |
| MG Courier Services Limited | Transport & logistics | 2005 |
| MG Electrical Services (Notts) Ltd | Construction | 2018 |
| MG Fairclough Limited | Health & social care | 2005 |
| MG Forecourt Management Limited | Wholesale & retail | 2004 |
| MG Jackson Ltd | Transport & logistics | 2022 |
| MG Mobile Solution Limited | Information & communication | 2022 |
| MG Plumbing and Heating Nottingham Limited | Construction | 2024 |
| MG Service Centre Ltd | Wholesale & retail | 2022 |
| MG Services Alferton Road Ltd | Hospitality | 2025 |
| MG Synergy Consulting Ltd | Professional & scientific | 2024 |
| MG Taylor Property Ltd | Households | 2025 |
| MGA Motor Group Ltd | Wholesale & retail | 2023 |
| MGA Solutions Ltd | Professional & scientific | 2019 |
| MGC Diagnostics Limited | Professional & scientific | 2012 |
| MGC Repairs Ltd | Wholesale & retail | 2025 |
| MGC Systems Ltd | Information & communication | 2024 |
| MGD Group Limited | Wholesale & retail | 2009 |
| MGF Laboratories Limited | Manufacturing | 2004 |
| MGF Properties Limited | Real estate | 2019 |
| MGI Solutions Ltd | Transport & logistics | 2018 |
| MGM Recruitment Limited | Administrative & support | 2009 |
| Mgmm UK Ltd | Administrative & support | 2025 |
| Mgommersall Ltd | Professional & scientific | 2025 |
| MGP Sagittarius Ltd | Real estate | 2021 |
| MGR Garage Limited | Wholesale & retail | 2023 |
| MGR Grills Ltd | Hospitality | 2025 |
| MGS Consultants Ltd | Extraterritorial | 2016 |
| MGS Contracts Limited | Construction | 2017 |
| MGT Developments Ltd | Construction | 2012 |
| MGZ Solutions Ltd | Information & communication | 2025 |
| MH Education Services Ltd | Education | 2026 |
| MH Group Holdings Limited | Professional & scientific | 2018 |
| MH Motors (Staunton) Ltd | Wholesale & retail | 2025 |
| MH Norfolk Limited | Health & social care | 2023 |
| MH Planning Services Limited | Professional & scientific | 2025 |
| MH Services (Nottingham) Ltd | Administrative & support | 2025 |
| MH Trading INT Ltd | Wholesale & retail | 2026 |
| MHA Businesses Ltd | Wholesale & retail | 2026 |
| MHA Developments Ltd | Construction | 2019 |
| MHA Holdings Limited | Financial services | 2020 |
| MHA Lettings Limited | Real estate | 2020 |
| MHA Pharma Ltd | Real estate | 2018 |
| MHA Residential Limited | Real estate | 2022 |
| MHD Construction Holdings Limited | Financial services | 2026 |
| MHE Ventures Ltd | Financial services | 2025 |
| Mheta Consulting Ltd | Professional & scientific | 2022 |
| Mhflt UK Ltd | Manufacturing | 2025 |
| MHH (Hodthorpe) Limited | Construction | 2018 |
| MHH (Kirkby) Limited | Construction | 2018 |
| MHJ Brickwork and Construction Ltd | Construction | 2025 |
| Mhk&Mik Limited | Wholesale & retail | 2026 |
| MHM Property Holdings Ltd | Real estate | 2024 |
| MHN Property Holdings Limited | Real estate | 2025 |
| Mhofu Care Services Limited | Health & social care | 2018 |
| MHP Concept Kitchens Ltd | Hospitality | 2021 |
| MHQ Holdings Ltd | Financial services | 2022 |
| MHQ Traders Ltd | Wholesale & retail | 2022 |
| MHR Developments Limited | Real estate | 2026 |
| MHR International UK Limited | Information & communication | 1984 |
| MHT Engineering Limited | Manufacturing | 2020 |
| MHT Properties Limited | Real estate | 2013 |
| Mhyk Trading Ltd | Wholesale & retail | 2016 |
| MHZ Care Ltd | Health & social care | 2023 |
| MI Bullion Ltd | Manufacturing | 2026 |
| MI Burger Limited | Hospitality | 2025 |
| MI Casa SU Casa Properties Ltd | Real estate | 2022 |
| MI Diagnostics Ltd | Wholesale & retail | 2020 |
| MI Dunne Ltd | Transport & logistics | 2022 |
| MI Ishaq Traders Ltd | Wholesale & retail | 2025 |
| MI KPI Ltd | Professional & scientific | 2025 |
| MI Life Design Ltd | Professional & scientific | 2018 |
| MI Ophthalmics Ltd | Real estate | 2014 |
| MI Property Garden Limited | Real estate | 2022 |
| Mi-Spend Ltd | Information & communication | 2020 |
| Mi-Sport Global Limited | Wholesale & retail | 2008 |
| MIA Contracts Ltd | Administrative & support | 2014 |
| MIA Tesoro Private Limited | Wholesale & retail | 2019 |
| Miah & Brothers Limited | Real estate | 2025 |
| Miami Art Services Ltd | Professional & scientific | 2024 |
| Mianjee Investment Holdings Limited | Financial services | 2025 |
| MIB Holdings Limited | Financial services | 2021 |
| Mica Bidco Limited | Financial services | 2023 |
| Mica Redd Limited | Real estate | 2021 |
| Mica Topco Limited | Financial services | 2023 |
| Michael Ayres Limited | Administrative & support | 2016 |
| Michael Carr Consulting Limited | Professional & scientific | 2011 |
| Michael Fewkes Ltd | Wholesale & retail | 2003 |
| Michael G Ryan SON & Daughters Limited | Other services | 2003 |
| Michael Gamble Funeral Directors Holdings Limited | Extraterritorial | 2019 |
| Michael Gamble Funeral Directors Limited | Extraterritorial | 2008 |
| Michael Gamble Funeral Directors Stonehouse Limited | Extraterritorial | 2019 |
| Michael James Properties Limited | Real estate | 2017 |
| Michael John Bryan Limited | Extraterritorial | 2025 |
| Michael Mckeever Education Ltd | Administrative & support | 2015 |