| Legid Tech Ltd | Information & communication | 2026 |
| Legitimate Technical Services Limited | Information & communication | 2023 |
| LEI Commercial Services Limited | Construction | 2011 |
| Leibani & Zinja Limited | Health & social care | 2015 |
| Leicester Garage Doors Limited | Construction | 2013 |
| Leicester Surgical Specialists (LSS) Ltd | Health & social care | 2018 |
| Leicester Tamatanga Ltd | Hospitality | 2018 |
| Leigh Cannon Ltd | Professional & scientific | 2026 |
| Leigh Garside Limited | Construction | 2014 |
| Leigh's Limited | Construction | 2002 |
| Leighton Aviation Consultants Ltd | Information & communication | 2024 |
| Leinad Trans Ltd | Transport & logistics | 2014 |
| Lema Living Ltd | Real estate | 2023 |
| Lema Property Group Ltd | Financial services | 2023 |
| Lema Sourcing Ltd | Real estate | 2024 |
| Leman Street Store Limited | Wholesale & retail | 2026 |
| Lemmington Estates Limited | Construction | 1979 |
| Lemon and Lime Franchising Ltd | Professional & scientific | 2024 |
| Lemon and Lime Homes Limited | Professional & scientific | 2015 |
| Lemon and Lime Licencing Limited | Administrative & support | 2020 |
| Lemon Signs Limited | Manufacturing | 2015 |
| Lemon Storm Catering Ltd | Manufacturing | 2024 |
| Lemon Tree South East Ltd | Administrative & support | 2017 |
| Lemons Into Lemonade Ltd | Public administration | 2019 |
| Lenagh Homes Developments LLP | | 2015 |
| Lenderyou Consulting Ltd | Information & communication | 2025 |
| Lennies Plumbing & Heating Services Limited | Construction | 2026 |
| Lennox IT Limited | Administrative & support | 2017 |
| Lenord Enterprises Ltd | Information & communication | 2012 |
| Lenton Moor Ltd | Education | 2020 |
| LEO Investment Solutions Ltd | Real estate | 2023 |
| LEO Manifold Limited | Professional & scientific | 2025 |
| Leoba Service Ltd | Wholesale & retail | 2018 |
| Leonie Grainger Fine Art Ltd | Arts & recreation | 2024 |
| Leopard Syndicate (Private) Limited | Financial services | 2012 |
| LET & LET Live Ltd | Real estate | 2025 |
| LET Green Limited | Professional & scientific | 2013 |
| LET ME in Presents Ltd | Administrative & support | 2023 |
| LET US Properties Limited | Real estate | 2025 |
| Let's Talk IT Through Ltd | Health & social care | 2025 |
| Letlabs Property Group Limited | Hospitality | 2025 |
| Letnest Ltd | Real estate | 2024 |
| Lets Cook Catering Limited | Hospitality | 2021 |
| Lets EAT 777 Ltd | Hospitality | 2026 |
| Lets EAT Derby Ltd | Hospitality | 2024 |
| Lets GET Active UK Ltd | Health & social care | 2023 |
| Letswork UK Limited | Information & communication | 2022 |
| Letts-Stay Ltd | Real estate | 2019 |
| Let’S Go Campaign Limited | Health & social care | 2025 |
| Levana (Bath) Limited | Hospitality | 2011 |
| Level Builders Ltd | Construction | 2021 |
| Level UK Studio Limited | Information & communication | 2015 |
| Level UP Training Partnership Ltd | Education | 2025 |
| Levels App Ltd | Information & communication | 2025 |
| Leven Ling Ltd | Wholesale & retail | 2020 |
| Lever Estates Limited | Financial services | 2023 |
| Levers Group Ltd | Financial services | 2020 |
| Levers Living Ltd | Real estate | 2019 |
| Levers Sourcing Ltd | Real estate | 2021 |
| Levi Island Limited | Real estate | 2020 |
| Levi Transport Ltd | Transport & logistics | 2018 |
| Levmor Limited | Real estate | 2016 |
| Lewco Holdings Limited | Hospitality | 2021 |
| Lewis Electrical Derby Ltd | Construction | 2022 |
| Lewis Holdings Group Ltd | Financial services | 2023 |
| Lewisjb Engineering Limited | Manufacturing | 2025 |
| Lexbridge Services Ltd | Administrative & support | 2026 |
| Lexbrooke Commercials Limited | Wholesale & retail | 2025 |
| Lexi Properties Limited | Real estate | 2021 |
| Lexical LAB Limited | Education | 2013 |
| Lexora Trading Ltd | Wholesale & retail | 2025 |
| LEY Distributors Limited | Wholesale & retail | 2007 |
| Leyari House Ltd | Hospitality | 2026 |
| LF Enterprises Limited | Real estate | 1992 |
| LFH Consult Limited | Professional & scientific | 2025 |
| LFZ Holdings Limited | Real estate | 2024 |
| Lgnp Ltd | Health & social care | 2024 |
| LH Care Home Limited | Health & social care | 2026 |
| LH Energy Solutions Ltd | Other services | 2025 |
| LH Insulation Services Ltd | Construction | 2022 |
| LH Recycling Ltd | Water & waste | 2025 |
| Lharco Limited | Professional & scientific | 2018 |
| Lhrsd Limited | Real estate | 2020 |
| LHS Professional Properties Ltd | Real estate | 2023 |
| Liam Patrick Enterprises Ltd | Financial services | 2024 |
| Lians Business Solutions Limited | Professional & scientific | 2008 |
| Lians Group Ltd | Financial services | 2019 |
| Lians Property Solutions Limited | Real estate | 2018 |
| Libertas 222 Limited | Real estate | 2025 |
| Liberty (Eco) Ltd | Agriculture & fishing | 2021 |
| Liberty CF International Limited | Professional & scientific | 2023 |
| Liberty CF Limited | Administrative & support | 2015 |
| Liberty Maze CIC | Hospitality | 2025 |
| Liberty Maze Housing Limited | Hospitality | 2023 |
| Libra Spaces Ltd. | Information & communication | 2019 |
| Libter Limited | Wholesale & retail | 2025 |
| Liddle Rail Ltd | Construction | 2025 |
| Lidott Limited | Construction | 1977 |
| Life Amor Ltd | Arts & recreation | 2025 |
| Life Enhancement Group Ltd | Health & social care | 2017 |