| Lemon Vinyl Ltd | Information & communication | 2025 |
| Lemonpath Limited | Transport & logistics | 2006 |
| Lemonworks Limited | Information & communication | 2016 |
| Lemur Management Ltd | Financial services | 2022 |
| LEN Cross Fertilizers Limited | Wholesale & retail | 1996 |
| Lenarczyk Property Ltd | Real estate | 2024 |
| Lending Hands Services Limited | Transport & logistics | 2025 |
| Leni Properties Limited | Real estate | 2022 |
| Lenka Services Ltd | Transport & logistics | 2019 |
| Lenny’S Tanning Ltd | Other services | 2025 |
| Leno Developments Limited | Construction | 2011 |
| Lensbridge UK Limited | Wholesale & retail | 2026 |
| Lensbury Retirement Services Limited | Education | 2012 |
| Lensesglobal Limited | Wholesale & retail | 2014 |
| Lenson Property Maintenance Ltd | Construction | 2024 |
| Lenton Treatment Group Limited | Professional & scientific | 2003 |
| Lenton Treatment Holdings Limited | Professional & scientific | 1978 |
| Lenton Treatments | Professional & scientific | 1970 |
| Lenton Treatments (Leicester) Limited | Water & waste | 1978 |
| Lenus Global Ltd. | Health & social care | 2010 |
| LEO Capital Group Limited | Real estate | 2024 |
| LEO Contracts Ltd | Professional & scientific | 2022 |
| LEO Electrical Limited | Construction | 2007 |
| LEO Technology Group Limited | Information & communication | 2025 |
| LEO Tide Ltd | Wholesale & retail | 2023 |
| Leo's Coffee House Limited | Hospitality | 2024 |
| Leogenic Labs Ltd | Information & communication | 2021 |
| Leogims Limited | Public administration | 2018 |
| Leon Hadji-Nikolaou Ltd | Health & social care | 2022 |
| Leon York Heating Ltd | Construction | 2019 |
| Leonard Holdings Limited | Financial services | 2026 |
| Leonim Properties Ltd | Real estate | 2024 |
| Leonum Lettings Limited | Real estate | 2024 |
| Leonum Property Ltd | Real estate | 2019 |
| Leopak Ltd | Wholesale & retail | 2024 |
| Leppington Transport Ltd | Transport & logistics | 2014 |
| LER Pipe Services Ltd | Professional & scientific | 2024 |
| LES Dart Limited | Real estate | 2025 |
| Lese 2021 Limited | Financial services | 2021 |
| Leslie H. Trainer and SON Limited | Wholesale & retail | 1973 |
| Lessis Moore Ltd | Information & communication | 2021 |
| Lesta Consultants Ltd | Professional & scientific | 2012 |
| Lesta Food Ltd | Wholesale & retail | 2022 |
| Lesta Holdings Limited | Financial services | 2025 |
| Lesta Ltd | Real estate | 2015 |
| Lesta Pro Builders Ltd | Construction | 2024 |
| Lesta Tyres & Auto Centre Ltd | Wholesale & retail | 2023 |
| Lester & Co (K Investments) Limited | Real estate | 2023 |
| Lester & Co (P Investments) Limited | Real estate | 2023 |
| Lester & Co Builders & Developers Limited | Construction | 2017 |
| Lester and Company (Developments) Limited | Real estate | 1993 |
| Lester Hall Apartments Limited | Health & social care | 1998 |
| Lestercast Group Limited | Financial services | 2018 |
| Lestercast Holdings Limited | Other services | 2001 |
| Lestercast Limited | Manufacturing | 1972 |
| Lestercast Trustee Limited | Financial services | 2018 |
| Leszczynski Food Ltd | Wholesale & retail | 2018 |
| LET 2 LET Ltd | Wholesale & retail | 2024 |
| LET Maison Ltd | Real estate | 2024 |
| Let's Go Custom Ltd | Manufacturing | 2018 |
| Leta Enterprises Ltd | Health & social care | 2015 |
| Leta Properties Ltd | Real estate | 2017 |
| Leta-Lux Limited | Manufacturing | 2021 |
| Letap Tech Solutions Ltd | Information & communication | 2016 |
| Letap Trading Limited | Wholesale & retail | 2016 |
| Letforward Ltd | Construction | 2023 |
| Letinspectuk Ltd | Administrative & support | 2025 |
| Lets in Leicester Ltd | Real estate | 2018 |
| Letsreplace Limited | Wholesale & retail | 2023 |
| Letting Leicester Limited | Real estate | 2007 |
| Letting Specialists UK Limited | Real estate | 2009 |
| Lettings 4 Students (Leicester) LLP | | 2011 |
| Lettings DC Ltd | Real estate | 2021 |
| Letton Notable Ltd | Transport & logistics | 2018 |
| Letts Maintain Limited | Households | 2020 |
| Letty (Leicester) Limited | Real estate | 2022 |
| LEV Engineering Holdings Limited | Financial services | 2026 |
| LEV Engineering Limited | Construction | 2017 |
| Leva Group Ltd | Construction | 2026 |
| Levaaro Group Limited | Wholesale & retail | 2025 |
| Levana UK Limited | Wholesale & retail | 2008 |
| Levant Brocade Ltd | Other services | 2026 |
| Levant Overseas Developments Limited | Administrative & support | 1995 |
| Level UP Accountancy Ltd | Professional & scientific | 2021 |
| Level UP Construction (Leic) Ltd | Construction | 2022 |
| Level UP Properties (Leic) Ltd | Real estate | 2024 |
| Level UP Your Training Ltd | Education | 2025 |
| Leventhorpe Logistics Ltd | Transport & logistics | 2014 |
| Leverage Tech Ltd | Information & communication | 2024 |
| Leversedge Telecom Services Limited | Information & communication | 1975 |
| Levigo Aesthetics Clinic Ltd | Health & social care | 2021 |
| Levitate Theatre Arts Ltd | Arts & recreation | 2021 |
| Levoo Ltd | Information & communication | 2026 |
| Lewin Electrical Services Limited | Construction | 2023 |
| Lewis & Neal Bathrooms Limited | Construction | 2017 |
| Lewis Charlton Limited | Education | 2003 |
| Lewis Design Associates Ltd | Professional & scientific | 2013 |
| Lewish Freight & Trans Ltd | Transport & logistics | 2026 |
| Lewmor Creative Ltd | Information & communication | 2025 |
| Lewmor Group Ltd | Information & communication | 2017 |