| LX2 Scaffolding Ltd | Construction | 2020 |
| Lycann Limited | Real estate | 2015 |
| Lyceumdesserts Ltd | Manufacturing | 2026 |
| Lydian Ledgers Ltd | Manufacturing | 2014 |
| Lydiarecruitment Limited | Health & social care | 2022 |
| Lyft Plus Limited | Transport & logistics | 2026 |
| LYK Maryam Ltd | Financial services | 2019 |
| Lylyrose Services Ltd | Real estate | 2024 |
| Lymingtons Local Ltd | Wholesale & retail | 2020 |
| Lynthorne Developments Ltd | Real estate | 2022 |
| Lynton Law Ltd | Professional & scientific | 2024 |
| Lynx Print Limited | Manufacturing | 1980 |
| Lynxes Spirits Ltd | Wholesale & retail | 2022 |
| Lyrica Instruments Ltd | Wholesale & retail | 2026 |
| Lyth Pearson Legal Services Ltd | Professional & scientific | 2024 |
| Lyvia Health Ltd | Health & social care | 2025 |
| M & H Detailing Yorkshire Ltd | Wholesale & retail | 2026 |
| M & J Investments LLP | | 2023 |
| M & J Solutions York Limited | Water & waste | 2020 |
| M & L Logistic Solutions Ltd | Transport & logistics | 2022 |
| M & N Racing Ltd | Wholesale & retail | 2023 |
| M & N Real Estate Ltd | Real estate | 2021 |
| M & Q Property Maintenance Ltd | Other services | 2020 |
| M & R Mill Limited | Real estate | 1991 |
| M & R Property Management Solutions Ltd | Households | 2026 |
| M & S Carpets Ltd | Construction | 2025 |
| M & S Floors Limited | Construction | 2000 |
| M & S Healthcare Ltd | Health & social care | 2013 |
| M & S Oxley and Sons Limited | Construction | 2006 |
| M & Sons Services Ltd | Other services | 2019 |
| M & U Professionals Limited | Administrative & support | 2019 |
| M & Z Associates Ltd | Real estate | 2015 |
| M 1 Engineering Limited | Manufacturing | 1972 |
| M a & Sons Yorkshire Ltd | Real estate | 2023 |
| M a Builders Limited | Construction | 2002 |
| M a Car Hire Ltd | Wholesale & retail | 2024 |
| M a Cash & Carry Ltd | Construction | 2023 |
| M a Jewelers Ltd | Wholesale & retail | 2011 |
| M a Mousa Holdings Limited | Financial services | 2026 |
| M a Orthopaedic Services Limited | Health & social care | 2012 |
| M a Rizvi Limited | Professional & scientific | 2011 |
| M a S Pharma Limited | Health & social care | 2018 |
| M a Tyres Ltd | Wholesale & retail | 2022 |
| M a Yasin Ltd | Real estate | 2024 |
| M Ahmed Associates Limited | Health & social care | 2020 |
| M Amin Limited | Administrative & support | 2023 |
| M and P Services Ltd Limited | Construction | 2016 |
| M B Painting and Decorating Limited | Construction | 2020 |
| M B Scrap Metals Ltd | Wholesale & retail | 2019 |
| M Brooke Properties Ltd | Real estate | 2024 |
| M Conversions Ltd | Manufacturing | 2019 |
| M Couriers Ltd | Transport & logistics | 2025 |
| M Craft Developments Ltd | Construction | 2019 |
| M Craft Residential Ltd | Construction | 2026 |
| M D Construction (Bradford) Limited | Construction | 1997 |
| M Drive Holdings Limited | Real estate | 2026 |
| M Esah Holdings Ltd | Real estate | 2026 |
| M F (GP) Locum Limited | Health & social care | 2021 |
| M F Removals Ltd | Transport & logistics | 2022 |
| M Farooq Healthcare. Limited | Health & social care | 2021 |
| M G Autos (Queensbury) Limited | Wholesale & retail | 2019 |
| M Graham Consulting Ltd | Information & communication | 2019 |
| M H Business Centre Limited | Real estate | 2015 |
| M H Cabs Limited | Transport & logistics | 2026 |
| M H Couriers Ltd | Transport & logistics | 2019 |
| M H Electrical Bradford Ltd | Construction | 2024 |
| M H Garden Services Limited | Professional & scientific | 2006 |
| M H Services (BFD) Limited | Wholesale & retail | 2018 |
| M I Furniture Limited | Manufacturing | 2025 |
| M I Interiors Limited | Wholesale & retail | 2026 |
| M Ibrahim Construction Ltd | Construction | 2026 |
| M Ishaq Ltd | Health & social care | 2025 |
| M J Auto BFD Ltd | Wholesale & retail | 2021 |
| M J Autos (UK) Ltd | Other services | 2014 |
| M J Stalley (Transport) Ltd | Transport & logistics | 2003 |
| M Joinery Ltd | Professional & scientific | 2012 |
| M K a Meats Ltd | Manufacturing | 2025 |
| M K Dental Ltd | Health & social care | 2022 |
| M KAY Financial Services Ltd | Financial services | 2013 |
| M Khan Contractor Ltd | Professional & scientific | 2014 |
| M L Lifts Limited | Construction | 2005 |
| M Ladha Limited | Hospitality | 2026 |
| M M S (BFD) Limited | Transport & logistics | 2017 |
| M Mahmood Health Limited | Health & social care | 2014 |
| M Manning (Pharmacy) Limited | Wholesale & retail | 2002 |
| M MOO Lets Limited | Real estate | 2019 |
| M N Tasleem Consultancy Limited | Administrative & support | 2017 |
| M N Training Limited | Education | 2011 |
| M Nawaz Kitchen Limited | Hospitality | 2025 |
| M Page Design Limited | Professional & scientific | 2014 |
| M R Contracting Limited | Professional & scientific | 2025 |
| M R Hajj & Umrah Ltd | Administrative & support | 2019 |
| M R Investment (Yorkshire) Limited | Real estate | 2021 |
| M R Motors Ltd | Wholesale & retail | 2018 |
| M S Electrical Contractors Limited | Construction | 1996 |
| M S Heating & Plumbing Ltd | Construction | 2024 |
| M S K Contracting Limited | Financial services | 2015 |
| M S Logistics Yorkshire Ltd | Construction | 2019 |
| M S Pharma Services Ltd | Health & social care | 2018 |
| M S Properties (Northern) Limited | Real estate | 2008 |