| Life Style Barber Ltd | Other services | 2018 |
| Life Zone Training Ltd | Other services | 2015 |
| Lifestyle Property Projects Limited | Construction | 2015 |
| Lighthearts-Uk Ltd | Other services | 2023 |
| Lighting of London Limited | Wholesale & retail | 2020 |
| Likhaya Developments Limited | Professional & scientific | 2026 |
| LIL Productions Ltd | Information & communication | 2024 |
| Lili Waste Management Limited | Water & waste | 2023 |
| Lili Waste Services Ltd | Water & waste | 2014 |
| Lilia Tira Services Limited | Professional & scientific | 2018 |
| Lilla Knitwear Ltd | Manufacturing | 2024 |
| Lilypad Learners Limited | Education | 2025 |
| Lima Property Partners Limited | Real estate | 2023 |
| Lime Green International Limited | Financial services | 2015 |
| Limespace Ltd | Construction | 2015 |
| Limetree CAP Limited | Financial services | 2021 |
| Limitless Aesthetics & Training Ltd | Other services | 2019 |
| Limitless Motorsport Ltd | Wholesale & retail | 2021 |
| Linch Oncology Ltd | Health & social care | 2025 |
| Lind AG Limited | Wholesale & retail | 1992 |
| Lind Cars Limited | Professional & scientific | 2008 |
| Lind Estates Limited | Professional & scientific | 2002 |
| Lind Group Holding Company Limited | Professional & scientific | 2008 |
| Lind Motorrad Limited | Wholesale & retail | 2008 |
| Lind Triumph Ltd | Wholesale & retail | 2008 |
| Lind US Limited | Wholesale & retail | 2008 |
| Lindeyer Francis Ferguson Limited | Professional & scientific | 2014 |
| Linear Electrical Ltd | Extraterritorial | 2020 |
| Lineker Electrical Limited | Construction | 2015 |
| Linfield Dalton Property Management Limited | Real estate | 1998 |
| Linkage Systems Limited | Information & communication | 2004 |
| Linkmakers Ltd | Information & communication | 2007 |
| Links and Avenues Ltd | Real estate | 2018 |
| Linkway Property Ltd | Construction | 2024 |
| Lintfield Limited | Financial services | 1992 |
| Linwood Plenums Ltd | Manufacturing | 2010 |
| Lion House (UK) Limited | Information & communication | 1996 |
| Lion Insurance Equestrian Services Ltd | Financial services | 2024 |
| Lion Tamer Business Consultants Limited | Professional & scientific | 2015 |
| Lionfish Print Ltd | Manufacturing | 2024 |
| Listed Building Surveys Ltd | Administrative & support | 2007 |
| Little Eden Limited | Other services | 2006 |
| Little Surrenden Management Ltd | Real estate | 2024 |
| Livingstone Media Limited | Information & communication | 2006 |
| Livingstone Property Holdings Limited | Households | 2006 |
| LJG Developments Limited | Construction | 2019 |
| Ljrees Ltd | Health & social care | 2026 |
| LK Engineering Consultancy Limited | Construction | 2014 |
| LLB Echo Ltd | Extraterritorial | 2024 |
| LM Goods Ltd | Wholesale & retail | 2025 |
| LMG Enterprises Ltd | Administrative & support | 2013 |
| Lmsa Properties Limited | Real estate | 2023 |
| Lndermatology Ltd | Health & social care | 2019 |
| Locs Holdings Ltd | Real estate | 2026 |
| Logicore Systems Ltd | Construction | 2026 |
| Logitsol Limited | Information & communication | 2010 |
| Loke Enterprises LLP | | 2021 |
| Lokempire Ltd | Information & communication | 2020 |
| Loncar Ltd | Construction | 2019 |
| London Allergy Services Ltd | Health & social care | 2020 |
| London Astro Properties Limited | Households | 2024 |
| London Behavioural Science Ltd | Professional & scientific | 2023 |
| London Cataract Clinic Limited | Extraterritorial | 2013 |
| London ENT Neurorad Services Ltd | Health & social care | 2015 |
| London GI and Liver Health Ltd | Health & social care | 2018 |
| London Implant Centre Ltd | Education | 2022 |
| London JSH Properties Limited | Real estate | 2017 |
| London Neurosleep Ltd | Health & social care | 2022 |
| London Paediatric Orthopaedic Group Ltd | Education | 2019 |
| London Power & Controls Ltd | Construction | 2022 |
| London Sand Starlight Properties Limited | Real estate | 2016 |
| London Specialist Neurology Partnership LLP | | 2025 |
| London Sunlight Properties Limited | Real estate | 2017 |
| London Tower Properties Limited | Real estate | 2017 |
| Londongut Health Ltd | Health & social care | 2018 |
| Londonswan Group Limited | Real estate | 2020 |
| Londonswan Holdings Ltd | Real estate | 2020 |
| Looksmaxxed Ltd | Wholesale & retail | 2024 |
| Loop Tech Limited | Information & communication | 2015 |
| Lorbelle Lettings Limited | Households | 2026 |
| Lord Raglan (Staplehurst) Ltd | Hospitality | 2025 |
| Lorraine Claridge Limited | Information & communication | 2014 |
| Lorraine Young Company Secretaries Limited | Extraterritorial | 2011 |
| Lorraine Young Limited | Administrative & support | 2008 |
| Loughside Limited | Health & social care | 2024 |
| Love Detailing Ltd | Wholesale & retail | 2021 |
| Love EAT Oriental Tonbridge Limited | Hospitality | 2023 |
| Love My Food Ltd | Hospitality | 2020 |
| Love Spray Finishes Ltd | Construction | 2021 |
| Love to Move West Kent CIC | Education | 2025 |
| Love Weddings Ltd | Extraterritorial | 2006 |
| Lovelungs Ltd | Real estate | 2023 |
| LOW Dog Ltd | Real estate | 2020 |
| Lowe (Paddock Wood) Holdings Limited | Professional & scientific | 2017 |
| Lowe (Paddock Wood) Limited | Transport & logistics | 1961 |
| Lower & Co Ltd | Wholesale & retail | 2026 |
| Lower Green Holdings Limited | Households | 2021 |
| Lowtide Studio Ltd | Information & communication | 2020 |
| LPM Bohemia-The Tent Company Limited | Professional & scientific | 2005 |
| LR Tutoring Ltd | Education | 2021 |