| MAK Assembled Ltd | Wholesale & retail | 2021 |
| MAK Clinical Care Ltd | Health & social care | 2024 |
| MAK Express Ltd | Wholesale & retail | 2024 |
| Maka Plumbing and Heating Ltd | Construction | 2024 |
| Make Things Happen Project CIC | Education | 2025 |
| Make, DO Theatre Ltd | Arts & recreation | 2018 |
| Maker CNC Limited | Professional & scientific | 2025 |
| Makethismine Limited | Wholesale & retail | 2018 |
| Makeup by Saaima Ltd | Other services | 2019 |
| Makeupmatch Limited | Information & communication | 2022 |
| Makhan Medical Ltd | Health & social care | 2023 |
| Makhdoom Law Company Limited | Professional & scientific | 2014 |
| Maki Services Ltd | Administrative & support | 2026 |
| Making Sendse Ltd | Education | 2022 |
| Mako Store Ltd | Wholesale & retail | 2024 |
| Makprop Ltd | Real estate | 2024 |
| Maksums Limited | Wholesale & retail | 2023 |
| Malaika (Huddersfield) Ltd | Hospitality | 2019 |
| Malcolm Steel (Holdings) Limited | Financial services | 1986 |
| Malhi Logistics Ltd | Transport & logistics | 2023 |
| Malik UL Mulk Ltd | Wholesale & retail | 2025 |
| Malkavian Films Ltd | Information & communication | 2021 |
| Malko Ltd | Wholesale & retail | 2025 |
| Mallard Management (2009) Limited | Real estate | 2009 |
| Mallen Properties Limited | Real estate | 2020 |
| Mallinson Blinds Ltd | Manufacturing | 2018 |
| Mallinson Plumbing & Heating Ltd | Construction | 2024 |
| Mallinson Yorkshire Limited | Construction | 2004 |
| Mallinsons Brewing Company Ltd | Hospitality | 2010 |
| Mallow Enterprise Ltd | Wholesale & retail | 2020 |
| Maloneys Gym Ltd | Arts & recreation | 2022 |
| Malvern Mills (Huddersfield) Limited | | 1951 |
| MAM Radiology Ltd | Health & social care | 2022 |
| MAM Taxi Services Ltd | Transport & logistics | 2025 |
| Mama and ME Retreat Limited | Health & social care | 2025 |
| Mama Properties Ltd | Real estate | 2017 |
| Mama Veegz Ltd | Manufacturing | 2021 |
| Mamapool Ltd | Professional & scientific | 2020 |
| Mamas & Papas (Concessions) Limited | Wholesale & retail | 2019 |
| Mamas & Papas (Digital) Limited | Wholesale & retail | 2019 |
| Mamas & Papas (Stores) Limited | Wholesale & retail | 2019 |
| Mambra’S Eden Ltd | Wholesale & retail | 2025 |
| Mamie Care Ltd | Health & social care | 2019 |
| Mamun’S Private Hire Ltd | Transport & logistics | 2023 |
| Managing Finances Ltd | Administrative & support | 2018 |
| Manbir Baines Ltd | Transport & logistics | 2019 |
| Manbir Bains Ltd | Transport & logistics | 2009 |
| Mand & LIN Homes Ltd | Real estate | 2025 |
| Manderson Lift Services Ltd | Construction | 2021 |
| Mandy Miller Broadcast Services Limited | Information & communication | 2009 |
| Mandyscatering Limited | Hospitality | 2023 |
| Mane Building Works Ltd | Construction | 2025 |
| Mangocart Limited | Hospitality | 2019 |
| Mangopedestrian Limited | Real estate | 2024 |
| Mangrove Properties Limited | Real estate | 2024 |
| Mani Delicacies PVT Ltd | Hospitality | 2015 |
| Maniar Healthcare Limited | Professional & scientific | 2009 |
| Manil Limited | Administrative & support | 2025 |
| Manmanchester Ltd | Wholesale & retail | 2024 |
| Mann & Associates Ltd | Professional & scientific | 2013 |
| Manni Estates Ltd | Real estate | 2025 |
| Manning PUB Management Limited | Hospitality | 2025 |
| Manningham Castle Limited | Professional & scientific | 1999 |
| Mannypropertysolutions Ltd | Real estate | 2025 |
| Manor House Lindley Limited | Hospitality | 2017 |
| Mansoor Engineering Ltd | Professional & scientific | 2003 |
| Mansoor Ltd | Transport & logistics | 2026 |
| Manta Aviation Ltd | Transport & logistics | 2025 |
| Mantaleda Bathroom Company Limited | Manufacturing | 1996 |
| Mantova Ltd | Administrative & support | 2023 |
| Manuel Divine Care Ltd. | Administrative & support | 2014 |
| Manufacturing Media and Publishing Ltd | Professional & scientific | 2025 |
| Manufacturing Media Ltd | Professional & scientific | 2023 |
| Manus Review & Consulting Limited | Professional & scientific | 2020 |
| MAP Mechanical Ltd | Construction | 2009 |
| Mapharm Services Ltd | Health & social care | 2022 |
| Maple Childrens Care Homes Ltd | Health & social care | 2019 |
| Maple Gardens Managment Company Huddersfield Limited | Households | 2005 |
| MAQ Optom Ltd | Health & social care | 2024 |
| MAQ Property Developments Ltd | Real estate | 2023 |
| MAR Residential Estates Limited | Real estate | 2016 |
| Mara Recruit Limited | Administrative & support | 2023 |
| Maras Property Services Limited | Professional & scientific | 2015 |
| Maratopia Search Marketing Ltd | Professional & scientific | 2022 |
| Marchampt Ltd | Health & social care | 2026 |
| Margaret Ferris LLP | | 2010 |
| Marhaba HD7 Ltd | Hospitality | 2025 |
| Maria Rashid Ltd | Health & social care | 2025 |
| Marilliam Flowers Limited | Wholesale & retail | 2004 |
| Marin Horizon Ltd | Financial services | 2025 |
| Marino Classic and Sports Cars Limited | Wholesale & retail | 1982 |
| Marino Developments Limited | Construction | 1980 |
| Mario Pizza House Ltd | Hospitality | 2026 |
| Mark a. Wigley Limited | Other services | 2005 |
| Mark Cartwright Limited | Information & communication | 2011 |
| Mark England (Holdings) Limited | Financial services | 2026 |
| Mark England (Investments) Limited | Financial services | 2026 |
| Mark England Limited | Wholesale & retail | 2002 |
| Mark James Training Ltd | Education | 2011 |
| Mark Kelly Marketing Ltd | Professional & scientific | 2012 |