| Maho AGA Ltd | Other services | 2019 |
| Mahrem Ltd | Hospitality | 2025 |
| MAI Life Skills CIC | Education | 2025 |
| MAI Services Ltd | Construction | 2021 |
| Mai's Nail Salon Ltd | Other services | 2025 |
| Maidan Motors Ltd | Wholesale & retail | 2019 |
| Maidenhead Holdings (UK) Limited | Professional & scientific | 2010 |
| Maidenhead Printing & Stationery Company Limited | Manufacturing | 1987 |
| Maidenhead Property Ltd | Real estate | 2026 |
| Maidenhead River Services Ltd | Arts & recreation | 2015 |
| Maihan Ltd | Hospitality | 2020 |
| Mail Link UK Ltd | Transport & logistics | 2016 |
| Mailbox Gift Company Ltd | Wholesale & retail | 2021 |
| Mailmart Ltd | Wholesale & retail | 2025 |
| Maimai Holdings Ltd. | Wholesale & retail | 2023 |
| Main Camp Limited | Real estate | 2003 |
| Maintech Ltd | Other services | 2022 |
| Maison DE Aromas Ltd | Wholesale & retail | 2022 |
| Maison DE Sante Ltd | Real estate | 2023 |
| Maison DE Sante Properties Ltd | Real estate | 2025 |
| Maison Louvelle Aesthetics Ltd | Health & social care | 2025 |
| Maison Polymath Ltd | Professional & scientific | 2023 |
| Maison Skh&Co Ltd | Other services | 2025 |
| Maisoon Diva Limited | Wholesale & retail | 2026 |
| Majad HGV Ltd | Transport & logistics | 2024 |
| Majektrans Ltd | Transport & logistics | 2013 |
| Majestic Care Ltd | Health & social care | 2023 |
| Majesticflow Ltd | Information & communication | 2026 |
| Majesty Solutions Limited | Construction | 2024 |
| Majjha Ltd | Transport & logistics | 2025 |
| Major Computer Solutions Ltd | Wholesale & retail | 2023 |
| Major Design and Build Limited | Construction | 2025 |
| Major Fuels Limited | Wholesale & retail | 2016 |
| Major Infinite Services Ltd | Other services | 2025 |
| Majra Scaffolding Ltd | Construction | 2022 |
| MAK Europe Ltd | Wholesale & retail | 2010 |
| MAK Int'L Ltd | Administrative & support | 2023 |
| MAK Specialist Services Ltd | Information & communication | 2025 |
| Make Moving Easy Group Ltd | Transport & logistics | 2026 |
| Make My Event Ltd | Administrative & support | 2019 |
| Make Removal Easy Ltd | Transport & logistics | 2025 |
| Makesense Software Services Limited | Information & communication | 2020 |
| Makho Ltd | Health & social care | 2021 |
| Maki Tiles and Bathrooms Ltd | Construction | 2025 |
| Mako Electrical Services Ltd | Construction | 2022 |
| Makoni Associates Ltd | Health & social care | 2013 |
| Maks 1 Limited | Real estate | 2018 |
| Maks Transport Limited | Transport & logistics | 2021 |
| MAL Transport Ltd | Transport & logistics | 2026 |
| Malabar Foods Ltd | Wholesale & retail | 2015 |
| Malabar Transport Ltd | Transport & logistics | 2026 |
| Malaina Beauty Salon Ltd | Other services | 2026 |
| Malax Bespoke Building Ltd | Construction | 2017 |
| Malayil Consulting Ltd | Professional & scientific | 2015 |
| Malhi Healthcare Ltd | Health & social care | 2024 |
| Malhi Properties UK Ltd | Real estate | 2011 |
| Malik Brands Limited | Wholesale & retail | 2021 |
| Malik GZ Enterprise Ltd | Wholesale & retail | 2025 |
| Malik IT Ltd | Information & communication | 2019 |
| Malik Motors Ltd | Other services | 2016 |
| Malik Online Store Ltd | Wholesale & retail | 2023 |
| Malik Property Management Services Ltd | Real estate | 2023 |
| Malika Glow Limited | Wholesale & retail | 2025 |
| Malikson Groups Ltd | Wholesale & retail | 2011 |
| Malkiat Property Ltd | Real estate | 2018 |
| Mallard Property Development Ltd | Real estate | 2024 |
| Malola Consulting Limited | Professional & scientific | 2024 |
| Malra Solutions Ltd | Information & communication | 2018 |
| Malvern Court Flats Management Limited | Administrative & support | 2005 |
| Malwa Construction Limited | Construction | 2023 |
| Mama Made a Health Coach Limited | Health & social care | 2025 |
| Mamaniva Healthcare Ltd | Health & social care | 2024 |
| Mamf Limited | Health & social care | 2025 |
| Maminski Homes Ltd | Real estate | 2026 |
| Mamoyo LDT Limited | Health & social care | 2023 |
| Mampofu's Kitchen Limited | Hospitality | 2025 |
| Mamta Enterprises Limited | Real estate | 2026 |
| Manage Right Solutions Limited | Professional & scientific | 2025 |
| Management One TEN Limited | Professional & scientific | 2021 |
| Management-Issues.Com Limited | Professional & scientific | 2000 |
| Manako Building Solutions Ltd | Construction | 2021 |
| Manali Ltd | Hospitality | 2022 |
| Manas Softwares Limited | Information & communication | 2017 |
| Manasvi IT Solutions Limited | Information & communication | 2011 |
| Manasvi Technologies Ltd | Information & communication | 2015 |
| Manat Properties Limited | Real estate | 2024 |
| Manav Music Ltd | Administrative & support | 2020 |
| Mand Courier Ltd | Wholesale & retail | 2025 |
| Mand Truck Care Ltd | Wholesale & retail | 2024 |
| Mand Truck Repairs Limited | Wholesale & retail | 2022 |
| Mandarin Industrial Limited | Administrative & support | 2015 |
| Mane Group Ltd | Professional & scientific | 2023 |
| Manes Driveways & Construction Ltd | Construction | 2022 |
| Manforce Services (UK) Limited | Transport & logistics | 2006 |
| Mangement Solutions Ltd | Real estate | 2021 |
| Mani Housing Ltd | Real estate | 2025 |
| Mani-Ko Limited | Wholesale & retail | 2016 |
| Manikanta Wholsalers Limited | Wholesale & retail | 2026 |
| Manishi IT Consultant Limited | Information & communication | 2012 |
| Manjit Grial Limited | Professional & scientific | 2012 |