| Lavoro Heating Ltd | Manufacturing | 2020 |
| LE Hagley Property One Ltd | Real estate | 2025 |
| LE Hagley Property Two Ltd | Real estate | 2026 |
| Leafease Ltd | Wholesale & retail | 2024 |
| Leamington Psychiatry Clinic Limited | Health & social care | 2011 |
| Lean Flexibles Limited | Manufacturing | 2010 |
| LEE N Harris Transport Ltd | Transport & logistics | 2025 |
| Leicester Road Amateur Sports Club (Hinckley) Limited(The) | Arts & recreation | 1973 |
| Leicester Road Foundation C.I.C. | Other services | 2018 |
| Leicester Road Holdings Limited | Other services | 2021 |
| Leicester Road Stadium Limited | Arts & recreation | 2012 |
| Leicester Sharks Limited | Arts & recreation | 2022 |
| Leicestershire & Rutland Reuse Network Community Interest Company | Other services | 2014 |
| Leicestershire Cheese Ltd | Wholesale & retail | 2018 |
| Leicestershire Heat Pumps Ltd | Construction | 2024 |
| Lets GET Wired Ltd | Extraterritorial | 2023 |
| Lets WIN Prizes Ltd | Wholesale & retail | 2020 |
| Letsrunden CIC | Arts & recreation | 2025 |
| Lewis Safety Solutions Limited | Professional & scientific | 2011 |
| LFC Pizza Ltd | Hospitality | 2025 |
| LH Home Improvements Roofing Services Ltd | Extraterritorial | 2021 |
| LH Mortgage Services Ltd | Financial services | 2022 |
| Libra (UK) Jewellery Limited | Wholesale & retail | 2000 |
| Libra Office Interiors Limited | Wholesale & retail | 2009 |
| Liddle & SON Ltd | Hospitality | 2025 |
| LIDIA1306 Ltd | Health & social care | 2015 |
| Life Begins Limited | Real estate | 2018 |
| Life Won'T Wait Publishing Ltd | Information & communication | 2023 |
| Lightvalve Limited | Information & communication | 2009 |
| Lily and Mabel Limited | Wholesale & retail | 2017 |
| Limewolf Systems Ltd | Information & communication | 2025 |
| Link Knowledge Ltd | Information & communication | 2015 |
| Little Achievers Day Nursery Ltd | Education | 2019 |
| Little Monkey Studios Limited | Professional & scientific | 2015 |
| Lius Trading Ltd | Hospitality | 2024 |
| LIV Conversions Limited | Wholesale & retail | 2024 |
| Live Production Services Limited | Arts & recreation | 2017 |
| Live Smart Ltd. | Real estate | 2021 |
| Liversidge Consulting Services Ltd | Information & communication | 2021 |
| LJF Driveways Ltd | Manufacturing | 2023 |
| LMH Accounts Ltd | Professional & scientific | 2023 |
| LMM Legal Ltd | Professional & scientific | 2020 |
| Loca Ventures Weston Ltd | Extraterritorial | 2016 |
| Lochalsh Publishing Group Limited | Information & communication | 2025 |
| Lock Key Properties Limited | Real estate | 2018 |
| Lockley Gardens (Sapcote) Management Company Limited | Households | 2010 |
| Lococo Creative Limited | Professional & scientific | 2012 |
| Locoser Limited | Wholesale & retail | 2010 |
| Logistics Investment Solutions Ltd | Wholesale & retail | 2023 |
| Long Investment Ventures Limited | Real estate | 2021 |
| Loos for Hire Limited | Administrative & support | 2015 |
| Lord Luca Logistics Ltd | Transport & logistics | 2021 |
| Loughland Close RTM Company 2011 Limited | Households | 2011 |
| LPC Contracts Limited | Construction | 1997 |
| LSH Property Investments Ltd | Real estate | 2026 |
| LTS Property Group Limited | Real estate | 2024 |
| Lua's LAB Ltd | Other services | 2026 |
| Lucky 27 Ltd | Hospitality | 2019 |
| Lucy Hogg Ltd | Health & social care | 2025 |
| Ludgate Catering Services Limited | Hospitality | 2017 |
| Luke Gibson Ltd | Construction | 2019 |
| Lulaberry Ltd | Administrative & support | 2013 |
| Lullabies Nursery & Pre-School Ltd | Education | 2016 |
| Lumenautica Limited | Manufacturing | 2010 |
| LUV One LUV ALL Promotions Limited | Information & communication | 2019 |
| LUX Nail & Spa Limited | Other services | 2022 |
| LW Food Limited | Hospitality | 2021 |
| Lychgate Farm Equestrian LLP | | 2017 |
| Lynds Logistics Limited | Transport & logistics | 2024 |
| Lysithea Services Ltd | Information & communication | 2017 |
| M & a Home Improvements Limited | Construction | 2015 |
| M and a Premier Limited | Other services | 2022 |
| M and J Homes Limited | Real estate | 2019 |
| M B H Sealants Ltd | Construction | 2013 |
| M B H T Limited | Construction | 2011 |
| M J Mechanical Services Ltd | Wholesale & retail | 2015 |
| M P Engineering (UK) Limited | Manufacturing | 2004 |
| M Williams Enterprises Ltd | Real estate | 2021 |
| M&G Trans Ltd | Transport & logistics | 2016 |
| M&L Agencies Ltd | Wholesale & retail | 2021 |
| M&T African Stores Ltd | Wholesale & retail | 2025 |
| M&T Autos Ltd | Wholesale & retail | 2020 |
| M.I.H.H Limited | Manufacturing | 2022 |
| M.S.M. Accident Repairs Limited | Wholesale & retail | 1999 |
| M9 Property Group Ltd | Real estate | 2019 |
| MA Enterprises (Midlands) Ltd | Real estate | 2018 |
| MA Johnson Services Ltd | Professional & scientific | 2022 |
| Mac's Cleaning Services Ltd | Administrative & support | 2025 |
| Macbryan Limited | Real estate | 2023 |
| Macello Holdings Limited | Financial services | 2022 |
| Machine Tool Repair and Supply Ltd | Manufacturing | 2020 |
| Macpherson Consulting Limited | Professional & scientific | 1987 |
| Made by Karl Limited | Manufacturing | 2026 |
| Made. Homes Media Ltd | Professional & scientific | 2025 |
| Madyda Limited | Transport & logistics | 2015 |
| Mafuwer Transport Ltd | Transport & logistics | 2023 |
| Mahlodi Healthcare Ltd | Health & social care | 2019 |
| MAID2CLEAN West Midlands Ltd | Administrative & support | 2012 |
| Maierean Transport Ltd | Transport & logistics | 2018 |
| Makada Ltd | Wholesale & retail | 2016 |