| Luxury Travel Escapes Limited | Administrative & support | 2016 |
| LUXURY2LONGHAUL Limited | Administrative & support | 2018 |
| LW Legal Ltd | Administrative & support | 2015 |
| Lwmc Limited | Hospitality | 2015 |
| Lydia Pearce Consulting Ltd | Information & communication | 2023 |
| Lyndon Ambler Tiling Contracts Limited | Construction | 2003 |
| Lynlee Ltd | Hospitality | 2016 |
| Lynnovations Ltd | Construction | 2024 |
| Lynsey Ford Designs Ltd | Professional & scientific | 2020 |
| Lyra Travel Ltd | Wholesale & retail | 2025 |
| M & D Freight Limited | Transport & logistics | 2017 |
| M & G Garages (Marsh) Limited | Wholesale & retail | 2025 |
| M & H Logistics Ltd | Transport & logistics | 2026 |
| M & J Accountancy Services Limited | Professional & scientific | 1993 |
| M & K Hudds Limited | Real estate | 2018 |
| M & M Solutions (UK) Ltd | Professional & scientific | 2010 |
| M & R Unisex Fashion Limited | | 1982 |
| M & S Doctors Ltd | Health & social care | 2007 |
| M & Y Investments Limited | Professional & scientific | 2012 |
| M a Cars HFD Ltd | Transport & logistics | 2024 |
| M a Estates HFD Ltd | Real estate | 2025 |
| M a Hans & Sons Ltd | Wholesale & retail | 2018 |
| M a J Projects Ltd | Construction | 2014 |
| M a M PVT Ltd | Wholesale & retail | 2025 |
| M Abid Legal Ltd | Professional & scientific | 2014 |
| M and S Facilities Limited | Public administration | 2025 |
| M Andar Housing Ltd | Real estate | 2023 |
| M B Education Services Limited | Education | 2024 |
| M B Electrical Contracting Limited | Construction | 2011 |
| M Bielby Developments Limited | Real estate | 2025 |
| M C Harrison & Co Ltd | Financial services | 2025 |
| M Car Repairs Ltd | Wholesale & retail | 2020 |
| M D One Limited | Construction | 2009 |
| M E Rowley Ltd. | Manufacturing | 2017 |
| M Esthetic Ltd | Wholesale & retail | 2020 |
| M Gosal (Huddersfield) Ltd | Hospitality | 2026 |
| M Greenwood Steel Limited | Extraterritorial | 2021 |
| M HAQ Ltd | Professional & scientific | 2017 |
| M HUS Dent Ltd. | Health & social care | 2019 |
| M J D E B Limited | Extraterritorial | 2016 |
| M J Flaherty Consultants Limited | Administrative & support | 2015 |
| M J Siswick Limited | Health & social care | 2012 |
| M K Shehzad Ltd | Transport & logistics | 2024 |
| M Khan Ltd | Health & social care | 2014 |
| M L Autos (Huddersfield) Ltd | Wholesale & retail | 2019 |
| M N 786 Limited | Wholesale & retail | 2018 |
| M N D Floors Limited | Construction | 2010 |
| M N M Gaming Club Limited | Arts & recreation | 2026 |
| M O (Hudds) Ltd | Hospitality | 2019 |
| M R Traders Limited | Wholesale & retail | 2017 |
| M Rana Ltd | Financial services | 2015 |
| M S Property Estates Ltd | Real estate | 2026 |
| M Toft & Sons Ltd | Wholesale & retail | 2019 |
| M Traders Ltd | Wholesale & retail | 2018 |
| M W Silversides Consulting Engineers Ltd | Professional & scientific | 2022 |
| M Y a K Limited | Real estate | 2025 |
| M&A Bargainshop Ltd | Wholesale & retail | 2020 |
| M&A Portfolio Limited | Real estate | 2022 |
| M&H Commercials Limited | Wholesale & retail | 2012 |
| M&Jb Holdings Limited | Financial services | 2019 |
| M&M Haskell Limited | Real estate | 2022 |
| M&M Locums Ltd | Professional & scientific | 2009 |
| M&M&S Ltd | Construction | 2023 |
| M&N Medicals Ltd | Health & social care | 2010 |
| M&R Investment Capital Limited | Financial services | 2022 |
| M&R Investment Property Limited | Real estate | 2023 |
| M&R Rainbow Limited | Wholesale & retail | 2021 |
| M&S Freehold Limited | Real estate | 2026 |
| M&T Property Holdings Ltd | Real estate | 2021 |
| M&W Yorkshire Ltd | Construction | 2023 |
| M'S Autoshop Limited | Wholesale & retail | 2025 |
| M-Press Fittings Ltd | Professional & scientific | 2013 |
| M-Press Global Ltd | Construction | 2025 |
| M. Mountain Limited | Administrative & support | 2006 |
| M. Thornton Engineering Limited | Manufacturing | 2002 |
| M.A. Trading Limited | Wholesale & retail | 2003 |
| M.A.B. Testing Services Ltd | Information & communication | 2012 |
| M.A.F Family Ltd | Other services | 2023 |
| M.A.H. Solutions Ltd | Health & social care | 2023 |
| M.A.M Plumbing Heating and Drain Ltd | Construction | 2025 |
| M.A.S.A Investments Limited | Health & social care | 2016 |
| M.I.R Property Limited | Hospitality | 2018 |
| M.Isa Trading Ltd | Wholesale & retail | 2021 |
| M.N.S. Textiles Limited | Manufacturing | 2004 |
| M.P. & J. Firth Limited | Agriculture & fishing | 1999 |
| M.P.C. Properties Limited | Real estate | 1982 |
| M.W.Overland Industrial Ltd | Financial services | 2026 |
| M.W.Overland Ltd | Wholesale & retail | 2020 |
| M1 Auto Repair Ltd | Wholesale & retail | 2024 |
| M1 Distributors Group Ltd | Wholesale & retail | 2026 |
| M20 Property Developments Limited | Real estate | 2020 |
| M2R Pharm Ltd | Professional & scientific | 2012 |
| M3 (Yorkshire) Ltd | Extraterritorial | 2020 |
| M4 Property Investments Ltd | Real estate | 2021 |
| MA Boss Ltd | Wholesale & retail | 2025 |
| MA Electrical Ltd | Other services | 2008 |
| MA Express Travels Ltd | Transport & logistics | 2022 |
| MA GAS and Plumbing Services Ltd | Construction | 2026 |
| MA5 Limited | Construction | 2025 |
| MAA Recruitment Ltd | Administrative & support | 2019 |