| L C B Limited | Professional & scientific | 2003 |
| L Squared Associates Limited | Extraterritorial | 2015 |
| L&M Transport Service Lifestyle Company Ltd | Wholesale & retail | 2013 |
| L. Davis Painting and Decorating Limited | Construction | 2009 |
| L.M.Anderson Limited | Health & social care | 2021 |
| LA Concept Design Ltd | Professional & scientific | 2014 |
| LA Roar Consulting Ltd | Information & communication | 2018 |
| LA Tourelle Asset Limited | Financial services | 2022 |
| LA Tourelle Consulting Limited | Professional & scientific | 2015 |
| LA Tourelle Holdings Limited | Financial services | 2022 |
| LAB Surveys Ltd | Professional & scientific | 2023 |
| Lab.Inc Ltd | Professional & scientific | 2019 |
| Labour Mate UK Limited | Administrative & support | 2021 |
| Labourne Dream Properties Ltd | Real estate | 2024 |
| Labourne Property Renovations Ltd | Real estate | 2026 |
| Lady DEB Limited | Administrative & support | 2016 |
| Ladybird Holdco Ltd | Financial services | 2025 |
| Lafc Seniors Ltd | Arts & recreation | 2024 |
| Lakshmi Leicester Limited | Health & social care | 2016 |
| Lakshmi Property Ltd | Real estate | 2019 |
| Land Futures UK Limited | Financial services | 2017 |
| Land Restoration (Husbands Bosworth) Limited | Construction | 2017 |
| Landseer Cars Limited | Wholesale & retail | 2024 |
| Lane & MAY Limited | Real estate | 2019 |
| Lanford Fire Sprinklers Ltd | Other services | 2012 |
| Langton Designs Limited | Professional & scientific | 2019 |
| Languard Employees Trustee Limited | Financial services | 2026 |
| Languard Limited | Other services | 1981 |
| Lanwood Developments Limited | Real estate | 2006 |
| Laughton Trading Ltd | Professional & scientific | 2008 |
| Laurel Oak LLP | | 2011 |
| Lavendon Access Services (International) Limited | Professional & scientific | 1996 |
| Lavendon Group Limited | Administrative & support | 1992 |
| Lawrence Electrical Contractors Limited | Construction | 2003 |
| Lawrence Electrical Limited | Construction | 2016 |
| Lazar Transport Ltd | Administrative & support | 2017 |
| LCL Business Support Limited | Administrative & support | 2018 |
| Lcmc Holdings Limited | Wholesale & retail | 2017 |
| LE17 Limited | Hospitality | 2025 |
| LE3 Management Company Limited | Real estate | 2009 |
| Leadbeater Marketing Ltd | Administrative & support | 2014 |
| Leaders Medical Services Ltd | Health & social care | 2015 |
| Legal Compliance Services Limited | Professional & scientific | 2011 |
| Leicester and Warwick Ltd | Real estate | 2022 |
| Leicester Cobblecrete Limited | Construction | 2007 |
| Leicester Golf Centre Limited | Arts & recreation | 2017 |
| Leicester Radiology Ltd | Other services | 2015 |
| Leicester Repointing & Bricklaying Specialists Limited | Construction | 2003 |
| Leicester Steel Fabrications Limited | Manufacturing | 2019 |
| Leicester Surgical LLP | | 2020 |
| Leicester Trailers Ltd | Extraterritorial | 2009 |
| Leicester Truck Services Limited | | 1980 |
| Leicestersfinest Ltd | Hospitality | 2023 |
| Leicestershire Antiques Ltd | Wholesale & retail | 2025 |
| Leicestershire Electrical Ltd | Construction | 2020 |
| Leicestershire Wood Recycling Ltd | Manufacturing | 2014 |
| Leire Ltd | Real estate | 2014 |
| Leisure Provisions Limited | Administrative & support | 2014 |
| LEO Architects Limited | Professional & scientific | 2014 |
| Less Ordinary Marketing Solutions Ltd | Professional & scientific | 2023 |
| LET My Way Limited | Information & communication | 2025 |
| Let's Grab Hire Limited | Administrative & support | 2016 |
| Lewis & Cooper Properties Ltd | Real estate | 2020 |
| Lewis & Forbes Estate Agents Ltd | Real estate | 2025 |
| Lewis Construction Hinckley Limited | Construction | 2017 |
| Lexec Limited | Professional & scientific | 2014 |
| LFE Property Limited | Real estate | 2020 |
| Lhks Property Services Ltd | Real estate | 2024 |
| LIBS2 Limited | Hospitality | 2023 |
| Lidder Limited | Health & social care | 2015 |
| Lider Properties Ltd | Real estate | 2025 |
| Life Science Associates Limited | Professional & scientific | 2009 |
| Lifebeat | Education | 2008 |
| Lifeplan Products Limited | Manufacturing | 1984 |
| Lift Haus Fitness Limited | Other services | 2022 |
| Lightning Tools Holdings Limited | Financial services | 2014 |
| Lightning Tools Limited | Information & communication | 2007 |
| Like a Sunday Ltd | Information & communication | 2023 |
| Liltrans Limited | Transport & logistics | 2004 |
| Lincoln HIP & Knee Surgery Limited | Health & social care | 2019 |
| Lincolnshire Holistic Wellness Centre Limited | Education | 2022 |
| Linden Tree Homes Limited | Construction | 2019 |
| Linity Limited | Extraterritorial | 2020 |
| Link Climate Services Ltd | Other services | 2014 |
| Liquidity FX Trading Ltd | Professional & scientific | 2024 |
| Liris-Consulting Ltd | Professional & scientific | 2022 |
| Lisa Munro Physiotherapy Ltd | Other services | 2002 |
| Lister Legal Recruitment Ltd | Administrative & support | 2023 |
| Little Bettys Cafe Ltd | Hospitality | 2016 |
| Little Explorers Role-Play Ltd | Health & social care | 2025 |
| Little Legends Club Limited | Wholesale & retail | 2020 |
| Little OWL Lettings Ltd | Real estate | 2025 |
| Little Rainbows Community Preschool Community Interest Company | Education | 2014 |
| Little Timber Limited | Administrative & support | 2021 |
| Liubomyr Ltd | Transport & logistics | 2023 |
| Live at the Lodge Ltd | Arts & recreation | 2020 |
| Living Hope Care Ltd | Health & social care | 2026 |
| Llapsgb Limited | Other services | 2012 |
| Lnka Medical Limited | Health & social care | 2025 |
| LNR Door Solutions Ltd | Manufacturing | 2024 |