| Layton Builders Limited | Construction | 2006 |
| Lazersaurus Limited | Health & social care | 2014 |
| LB Professional Ltd | Wholesale & retail | 2022 |
| Lboromc Group Ltd | Education | 2024 |
| LC Fleet Ltd | Wholesale & retail | 2026 |
| LC Transport Limited | Transport & logistics | 2022 |
| LCD Druids Ltd | Wholesale & retail | 2012 |
| LCS World Food Ltd | Wholesale & retail | 2018 |
| LCV Hire Solutions Limited | Administrative & support | 2018 |
| Ldfcsocial Ltd | Arts & recreation | 2024 |
| LE Balcon Ltd | Wholesale & retail | 2021 |
| LE Chêne QUI Parle Ltd | Education | 2024 |
| LE Jeune Well-Being Limited | Hospitality | 2023 |
| LE Mart Ellay Ltd | Administrative & support | 2018 |
| LE Sueur Solutions Ltd | Construction | 2025 |
| LE11 Cars Limited | Wholesale & retail | 2014 |
| Lean Construction Technology Limited | Information & communication | 2019 |
| Lean Leadership Coaching Limited | Real estate | 2007 |
| Leaora Limited | Manufacturing | 2024 |
| Learning in Development Limited | Professional & scientific | 2020 |
| Leavesley Group Ltd | Financial services | 2026 |
| Lebart Ltd | Transport & logistics | 2015 |
| Lectomebio Ltd | Professional & scientific | 2024 |
| LEE Brothers Holdings Limited | Financial services | 2023 |
| LEE Brothers Properties Limited | Construction | 2018 |
| LEE Calibration Services Limited | Professional & scientific | 1997 |
| LEE Chamberlain Lofts Limited | Construction | 2011 |
| LEE Executive Coaching & Development Limited | Professional & scientific | 2020 |
| LEE Westley Limited | Administrative & support | 2023 |
| Lees & Co Law Ltd | Professional & scientific | 2025 |
| Lees & Hendry Ltd | Construction | 2025 |
| Lees Cuisine Limited | Hospitality | 2022 |
| Leesahga Ltd | Construction | 2022 |
| Leeson Technology Solutions Ltd | Information & communication | 2024 |
| Legacy UK Property Management Limited | Real estate | 2017 |
| Leicester and Leicester Ltd | Construction | 2015 |
| Leicester Autos UK Ltd | Wholesale & retail | 2025 |
| Leicester Campers Limited | Administrative & support | 2018 |
| Leicester Properties Limited | Real estate | 1988 |
| Leicester Shire Promotions Holdings Limited | Administrative & support | 2019 |
| Leicester Shire Promotions Limited | Administrative & support | 1993 |
| Leicester Windsurfing and Stand UP Paddle Boarding Club | Arts & recreation | 2016 |
| Leicestershire Carpentry Services Limited | Construction | 2003 |
| Leicestershire Scaffolding Limited | Construction | 2023 |
| Leisure Heating Limited | Manufacturing | 2004 |
| Lemaro & Co Ltd | Information & communication | 2014 |
| Leoma Services Limited | Financial services | 2020 |
| Lesa Aviation Ltd | Administrative & support | 2022 |
| Leslie Hubble Limited | Extraterritorial | 2000 |
| Leti Property Ltd | Real estate | 2023 |
| Levin (UK) Lightning Protection and Earthing Limited | Construction | 1997 |
| Lewis Accounting Limited | Professional & scientific | 2006 |
| Lewis's Leisure Limited | Construction | 2023 |
| Lexian Holdings Limited | Financial services | 2015 |
| Lexora Immigration Ltd | Professional & scientific | 2026 |
| Leyburn (UK) Limited | Professional & scientific | 1993 |
| LFH Collective CIC | Information & communication | 2024 |
| LFL Contracts Limited | Professional & scientific | 2019 |
| LG Swimming Limited | Arts & recreation | 2021 |
| LGH Hedging Ltd | Wholesale & retail | 2025 |
| LGT Developments Limited | Real estate | 2004 |
| LH Wellness Ltd | Education | 2025 |
| Lhhk Limited | Administrative & support | 2019 |
| Libby Clegg Limited | Arts & recreation | 2013 |
| Liberosis Limited | Real estate | 2017 |
| Liberty WMS Solutions Ltd | Information & communication | 2026 |
| Libra Cd’S & Tapes Limited | Wholesale & retail | 2026 |
| Libra Records Ltd | Wholesale & retail | 2025 |
| Lichen DO Company Ltd. | Wholesale & retail | 2014 |
| Life of Web Ltd | Information & communication | 2015 |
| Life Stories Ltd | Other services | 2018 |
| Life Thru a Lens Ltd | Construction | 2021 |
| Lifetron Consulting Ltd | Information & communication | 2010 |
| Lifetron Properties Limited | Real estate | 2019 |
| Lift and Escalator Jobs Ltd | Administrative & support | 2020 |
| Light & Haze Ltd | Information & communication | 2024 |
| Lightbox Events Limited | Other services | 2017 |
| Lightning Bolt Ltd | Information & communication | 2015 |
| Lilliput Day Nursery Limited | Other services | 1994 |
| Lilliput Day Nursery Trustees Limited | Administrative & support | 2019 |
| Lime Forensic Limited | Professional & scientific | 2018 |
| Lime Gardens Management Company Limited | Households | 2023 |
| Lime Street Limited | Information & communication | 2006 |
| Lime Street Properties Limited | Real estate | 2020 |
| Lime Tax Limited | Professional & scientific | 2018 |
| Limehurst House Limited | Administrative & support | 2002 |
| Limetree Academy Ltd | Education | 2019 |
| Limitless Roofing and Maintenance Services Ltd | Construction | 2025 |
| Linda Stewart Consulting Limited | Professional & scientific | 2015 |
| Lindsay Pipework Limited | Construction | 2009 |
| Lingdale Golf Club Limited | Arts & recreation | 1982 |
| Link for ALL Ltd | Wholesale & retail | 2026 |
| Link Lets Ltd | Real estate | 2020 |
| Linked Business Solutions Ltd | Professional & scientific | 2012 |
| Linkfield Court (Mountsorrel) Management Company Limited | Households | 2005 |
| Linshekel Property Management Ltd | Real estate | 2020 |
| Lioncorp Capital Limited | Real estate | 2026 |
| Lipoan Ltd | Real estate | 2024 |
| Liptis Ltd | Construction | 2022 |
| Lisay Ltd | Wholesale & retail | 2005 |