| LA Mertennoise Limited | Extraterritorial | 2005 |
| LA Salle Verte Limited | Wholesale & retail | 2016 |
| LA VIE EN Fleur Invest Ltd | Extraterritorial | 2025 |
| LA VIE EN Fleur Ltd | Extraterritorial | 2025 |
| Lait Investments Number One Limited | Real estate | 2019 |
| Lakeland Elements Ltd | Wholesale & retail | 2011 |
| Lambert Utilitaires Invest Ltd | Extraterritorial | 2025 |
| Lambert Utilitaires Ltd | Extraterritorial | 2025 |
| Lando Holdings Ltd | Information & communication | 2022 |
| Landtech South East Limited | Construction | 2007 |
| Langdon Limited | Financial services | 2021 |
| Langdon Logs Ltd | Agriculture & fishing | 2020 |
| Lanwevo Ltd | Health & social care | 2015 |
| Last Bullet Films Limited | Information & communication | 2015 |
| Latchgate Residents Company Limited | Hospitality | 1978 |
| Latruska Ltd | Real estate | 2019 |
| Latus Limited | Wholesale & retail | 1994 |
| Laucas Event Ltd | Professional & scientific | 2019 |
| Laucas Gestion Ltd | Extraterritorial | 2019 |
| Laureston House Limited | Health & social care | 2002 |
| Lawrie Leigh & Bonsall Ltd | Administrative & support | 2024 |
| LC Construction Kent Limited | Construction | 2016 |
| Lcpi Ltd | Real estate | 2017 |
| LDA Electrical Limited | Manufacturing | 2023 |
| Ldav Kent Ltd | Information & communication | 2022 |
| LDC Care Company Ltd | Health & social care | 1999 |
| LDC Care Medway Ltd | Health & social care | 2024 |
| LDC Care Property Co Ltd | Health & social care | 2020 |
| LDC Care Rental Co Ltd | Real estate | 2020 |
| LDC Group Ltd | Health & social care | 2020 |
| LDC Top Co Ltd | Health & social care | 2025 |
| LDI Consult Invest Ltd | Extraterritorial | 2017 |
| LDI Consult Ltd | Extraterritorial | 2017 |
| LDM Scaffolding Ltd | Construction | 2025 |
| LE Rucher Invest Ltd | Extraterritorial | 2024 |
| LE Rucher Ltd | Extraterritorial | 2024 |
| LE Studio 17 Ltd | Information & communication | 2023 |
| Leading Your International School Ltd | Hospitality | 2023 |
| Leaf Hotels Holdings Limited | Other services | 2017 |
| Leaf Hotels Limited | Professional & scientific | 2006 |
| Leaf Restaurant Limited | Hospitality | 2017 |
| Leaf Tree Services Limited | Agriculture & fishing | 2020 |
| Learning and Skills for Business and Community Limited | Education | 2010 |
| Learning Opportunities (Womenswold) Limited | Real estate | 1994 |
| Learning Opportunities Limited | Education | 1992 |
| Ledgit Ltd | Information & communication | 2026 |
| LEE & LEE Developments Ltd | Construction | 2018 |
| Leelands House Management Limited | Households | 1998 |
| Legacy Bricks Ltd | Real estate | 2024 |
| Legion Barbell Strength and Conditioning CIC | Arts & recreation | 2022 |
| Leigh-Ferguson Limited | Wholesale & retail | 2003 |
| Leighton Pile Limited | Information & communication | 2024 |
| Leisure Grounds Maintenance Kent Ltd | Administrative & support | 2026 |
| Lemaire Invest Ltd | Extraterritorial | 2026 |
| Lemaire Ltd | Extraterritorial | 2026 |
| LFD Delivery Ltd | Hospitality | 2025 |
| LG Cards Ltd | Wholesale & retail | 2024 |
| LGV Drivers Choice Ltd | Wholesale & retail | 2015 |
| Liberty Adventure Ltd | Wholesale & retail | 2023 |
| Light From Africa | Health & social care | 2005 |
| Likem Group of Companies Ltd | Wholesale & retail | 2025 |
| Lillie's Lodge Community Interest Company | Hospitality | 2021 |
| Lilly Consulting Ltd | Professional & scientific | 2019 |
| Lily Nails Dover Ltd | Other services | 2026 |
| Lima Property Group Ltd | Construction | 2025 |
| Linces Softco Limited | Information & communication | 2023 |
| Line Dance City Ltd | Administrative & support | 2025 |
| Links Court Management (Kent) Limited | Households | 1988 |
| Linn Machinery Limited | Wholesale & retail | 2012 |
| Lion AID Limited | Professional & scientific | 2009 |
| Lions Dynamics Ltd | Wholesale & retail | 2021 |
| Litrove Limited | | 2024 |
| Little Puffin Vintage Ltd | Wholesale & retail | 2021 |
| Liubov V Ltd | Real estate | 2024 |
| Live Heritage C.I.C. | Information & communication | 2012 |
| Live Less Toxic Ltd | Wholesale & retail | 2026 |
| Lizabethami Ltd | Health & social care | 2018 |
| Lizette Limited | Professional & scientific | 2016 |
| Lizjohn Limited | Real estate | 2010 |
| LKH Delivery Services Ltd | Hospitality | 2024 |
| LKJ Media Limited | Professional & scientific | 2020 |
| Lkss Properties Limited | Real estate | 2022 |
| Lloyd Court Leaseholders' RTM Company Limited | Households | 2010 |
| LM Architectural Ltd | Professional & scientific | 2023 |
| LNG Allworks Ltd | Construction | 2021 |
| Locally to YOU CIC | Professional & scientific | 2026 |
| Lodatis Invest Ltd | Extraterritorial | 2023 |
| Lodatis Ltd | Extraterritorial | 2023 |
| Lofthouse Conversions Limited | Construction | 1998 |
| Logicity Limited | Information & communication | 2008 |
| Logistic Center Kerkrade Limited | Professional & scientific | 2013 |
| Logistic Consulting International Group Limited | Professional & scientific | 2011 |
| Logistic Consulting International Limited | Professional & scientific | 2002 |
| Lola Solar Limited | Manufacturing | 2018 |
| London Community Video Archive CIC | Arts & recreation | 2025 |
| London ICT Training Center Ltd | Extraterritorial | 2019 |
| London ICT Training Solution Ltd | Extraterritorial | 2019 |
| London Road Shiny Hand Car Wash Ltd | Other services | 2014 |
| London School of Business & Design Ltd | Extraterritorial | 2022 |
| Long Hill Lane Management Company Limited | Households | 2018 |