| Loughborough University Nursery Limited | Health & social care | 2019 |
| Loughborough Washing Machine Centre Limited | Manufacturing | 2004 |
| Loughbrough Nail Ltd | Other services | 2022 |
| Loughskin Ltd | Other services | 2025 |
| Louise Harrison Interior Decorator Ltd | Other services | 2012 |
| Love Loughborough Ltd | Administrative & support | 2012 |
| Love Science Limited | Professional & scientific | 2015 |
| Loveday Property Investors Ltd | Real estate | 2022 |
| Lovegood Limited | Manufacturing | 2013 |
| Loveinspire Ltd | Information & communication | 2017 |
| LOW Risk Security Ltd | Transport & logistics | 2018 |
| LOW Woods Furnishings Limited | Wholesale & retail | 2003 |
| Lowehouse Property Limited | Households | 2022 |
| LPS Commercials Ltd | Wholesale & retail | 2023 |
| LPS Leisure Ltd | Hospitality | 2026 |
| Lp’S Autos Ltd | Wholesale & retail | 2025 |
| LR Express Ltd | Wholesale & retail | 2020 |
| LR2 Festival 1 Ltd | Hospitality | 2026 |
| LRB Consulting Limited | Administrative & support | 2000 |
| LRC Intertrade Ltd | Wholesale & retail | 2018 |
| LSM Motorcycle Tours Ltd | Administrative & support | 2022 |
| LSR Services (Europe) Limited | Professional & scientific | 2023 |
| LST Inspection Ltd | Professional & scientific | 2025 |
| LT Body Repairs and Paint Ltd | Manufacturing | 2025 |
| LTB Estates Ltd | Real estate | 2019 |
| LTC Composites Ltd | Manufacturing | 2026 |
| Lucabogdan Ltd | Transport & logistics | 2018 |
| Lucas BRO Ltd | Wholesale & retail | 2023 |
| Lucas Connect Logistic Ltd | Transport & logistics | 2022 |
| Lucky Animal Care Ltd | Agriculture & fishing | 2026 |
| Lucy Claire Bakes Ltd | Manufacturing | 2024 |
| Lucy Clay Limited | Professional & scientific | 2015 |
| Ludique Ltd | Information & communication | 2008 |
| Lufduck Limited | Professional & scientific | 1997 |
| Luff Ltd | Wholesale & retail | 2025 |
| Luke Welstead Construction Ltd | Construction | 2021 |
| Luke Winfield Plastering Limited | Construction | 2023 |
| Lume by DR Isra Ltd | Health & social care | 2025 |
| Lumi Communications Limited | Professional & scientific | 2023 |
| Lumido Ltd | Arts & recreation | 2024 |
| Luminary Care Limited | Health & social care | 2018 |
| Luna Bakery Ltd | Hospitality | 2022 |
| Luna Spas Limited | Wholesale & retail | 2005 |
| Lures and Order Ltd | Wholesale & retail | 2023 |
| LUX Hair and Beauty Ltd | Other services | 2020 |
| LUX Housing Ltd | Real estate | 2022 |
| LUX TAN Ltd | Other services | 2025 |
| LUX UN Limited | Wholesale & retail | 2025 |
| Luxe Protection Ltd | Administrative & support | 2026 |
| Luxury Coatings UK Ltd | Manufacturing | 2024 |
| Luxury Sports Tours Limited | Administrative & support | 2003 |
| LVS Fencing Ltd | Administrative & support | 2019 |
| LWC Homes Ltd | Construction | 2015 |
| Lydia Greenway Ltd | Arts & recreation | 2016 |
| Lyndhurst Acquisitions Limited | Real estate | 2024 |
| Lyntrix Ltd | Wholesale & retail | 2025 |
| Lynx Partnerships Ltd | Construction | 2022 |
| Lynx Polythene Limited | Manufacturing | 2008 |
| Lzsd Properties Ltd | Real estate | 2020 |
| M a DUB Vanz Limited | Wholesale & retail | 2017 |
| M and B Print Ltd | Manufacturing | 2012 |
| M B Events (UK) Limited | Arts & recreation | 2008 |
| M B Loughborough Ltd | Wholesale & retail | 2009 |
| M Graham Logistics Limited | Administrative & support | 2016 |
| M Holt Enterprises Limited | Wholesale & retail | 2023 |
| M Patel Services Limited | Real estate | 2019 |
| M Pearson & Sons Leisure Ltd | Arts & recreation | 2017 |
| M R Grocery Ltd | Wholesale & retail | 2023 |
| M Watson Developments Limited | Construction | 2022 |
| M Willoughby Limited | Professional & scientific | 2015 |
| M&Ad Services Limited | Health & social care | 2018 |
| M&E Consult Limited | Construction | 2025 |
| M&E Trans Ltd | Transport & logistics | 2017 |
| M-Tech (UK) Limited | Wholesale & retail | 1992 |
| M. & C.M. Murdoch (Builders) Limited | Construction | 1974 |
| M. Cooper (Electrical) Limited | Manufacturing | 1996 |
| M. Odedra Limited | Wholesale & retail | 2006 |
| M. Wright & Sons Limited | Manufacturing | 2000 |
| M.Cooke Contracting Ltd | Construction | 2022 |
| M.J.Wattam and Sons Ltd | Professional & scientific | 2005 |
| M.T. Jointing Limited | Construction | 2024 |
| M2 Transfer Company Limited | Administrative & support | 2017 |
| M4G Business Limited | Information & communication | 2022 |
| M9OLE Ltd | Extraterritorial | 2011 |
| Macaw Washrooms Limited | Construction | 2024 |
| Macevery Limited | Hospitality | 2020 |
| Machine Maintenance Services Ltd | Manufacturing | 2025 |
| Machobites Ltd | Hospitality | 2024 |
| Macmanus Psychiatric Services Ltd | Health & social care | 2025 |
| Maddox Fashion Limited | Professional & scientific | 2024 |
| Made by Keelan Ltd | Professional & scientific | 2026 |
| Madison & Mayfair Ltd | Administrative & support | 2025 |
| Madras Club Ltd | Hospitality | 2026 |
| MAE Property Limited | Extraterritorial | 2015 |
| Mafinso Ltd | Professional & scientific | 2016 |
| Magi 16 Ltd | Transport & logistics | 2018 |
| Magic Chicken Limited | Hospitality | 2019 |
| Magical World Party Events Ltd | Transport & logistics | 2022 |
| Magna Health Limited | Health & social care | 2016 |
| Magnecorde Ltd | Financial services | 2019 |