| Lifecare Agency Ltd | Health & social care | 2020 |
| Lifecare Healthcare Services Limited | Wholesale & retail | 2023 |
| LIFESAVERS47 Limited | Health & social care | 2018 |
| Liftec Crane Hire Limited | Construction | 1998 |
| Lifting Hands Care Services Ltd | Health & social care | 2022 |
| Light UP Photo Booths Limited | Professional & scientific | 2025 |
| Lightering Ships Ltd | Transport & logistics | 2011 |
| Lighthouse PVT Ltd | Health & social care | 2014 |
| Lightwell Homes Ltd | Professional & scientific | 2025 |
| Likecharlie Ltd | Professional & scientific | 2020 |
| Lillco Limited | Other services | 2012 |
| Lilly-Miah Properties Limited | Real estate | 2025 |
| Lima Vasquez Studio Ltd | Professional & scientific | 2025 |
| Lime Properties Ltd | Real estate | 2020 |
| Limitless Adaptions Limited | Construction | 2024 |
| Limitless Carpentry Ltd | Manufacturing | 2020 |
| Linas Construction Ltd | Construction | 2009 |
| Lincc Foundation Limited | Other services | 2021 |
| Linda Matthews & Co Limited | Real estate | 1994 |
| Linenoholic Limited | Wholesale & retail | 2021 |
| Lingerie With Roxanne Ltd | Manufacturing | 2021 |
| Link Property Building & Maintenance Ltd | Construction | 2018 |
| Link Property Management Holdings Ltd | Real estate | 2016 |
| Linked Futures Estates Ltd | Real estate | 2026 |
| Linked Futures Ltd | Information & communication | 2017 |
| Linked Futures Property Group Ltd | Financial services | 2026 |
| Lion’S DEN Recruitment Services Limited | Health & social care | 2018 |
| Lior Healing Limited | Health & social care | 2024 |
| LIP Sync Productions LLP | | 2006 |
| Lisa Stevens Ltd | Professional & scientific | 2019 |
| LIST365 Ltd | Administrative & support | 2022 |
| Little Ballers UK Ltd | Arts & recreation | 2017 |
| Little Bees Property Ltd | Real estate | 2024 |
| Little Cherub Limited | Health & social care | 2005 |
| Little Cobbs Limited | Real estate | 2025 |
| Little Einsteins Childminding Service Limited | Health & social care | 2024 |
| Little Funky Monkey Ltd | Health & social care | 2020 |
| Little Green Box Ltd. | Professional & scientific | 2013 |
| Little Kels Cleaning Solutions Ltd | Administrative & support | 2023 |
| Little LOU Lou's Limited | Real estate | 2020 |
| Little Orange Properties Ltd | Real estate | 2020 |
| Little OWL Tuition Four Oaks Ltd | Education | 2023 |
| Little OWL Tuition Ltd | Education | 2020 |
| Little OWL Tuition the Annexe Ltd | Education | 2023 |
| Littlebrook Carpentry Ltd | Manufacturing | 2025 |
| Littleztinytoez Limited | Health & social care | 2025 |
| Liva Mini Market Ltd | Wholesale & retail | 2023 |
| Live in Film Ltd | Professional & scientific | 2025 |
| Live With Laura Ltd | Real estate | 2015 |
| LIVIANOHGV2018 Ltd | Transport & logistics | 2018 |
| Living Software Ltd | Information & communication | 2014 |
| LIW Limited | Administrative & support | 2005 |
| LJA Properties Ltd | Real estate | 2025 |
| LJC Productions Ltd | Information & communication | 2020 |
| LJD Hospitality Ltd | Hospitality | 2025 |
| LJR Mechanical Services Ltd | Construction | 2024 |
| LK Restoration Services Ltd | Administrative & support | 2026 |
| LK Testing Sessions Limited | Professional & scientific | 2019 |
| LKT Holding Ltd | Professional & scientific | 2022 |
| Lktw Properties Limited | Real estate | 2021 |
| LL Entertainment & Consultancy Limited | Other services | 2015 |
| Lloyd Bass Stunts Limited | Information & communication | 2012 |
| LMC Renovation Ltd | Construction | 2019 |
| LMS Interiors Ltd | Construction | 2017 |
| LO Energy Limited | Professional & scientific | 2010 |
| Localservice 247 Ltd | Manufacturing | 2024 |
| Lockhart & Sons Limited | Professional & scientific | 2021 |
| LOCUMDOCTOR106 Limited | Health & social care | 2012 |
| Lodge&Gistics Ltd | Real estate | 2025 |
| Loem Ltd | Construction | 2022 |
| LOG Consulting Ltd | Information & communication | 2013 |
| Logical Engineering Services Limited | Professional & scientific | 2012 |
| Logical Flooring Limited | Construction | 2019 |
| Lolu Limited | Wholesale & retail | 2012 |
| London & Kent Access Solutions Ltd | Construction | 2021 |
| London & Kent Environmental Services Limited | Water & waste | 2018 |
| London BM Services Ltd | Other services | 2020 |
| London Boiler Installs Limited | Construction | 2017 |
| London Build & Investment Ltd | Construction | 2017 |
| London Glass Balustrades Limited | Construction | 2026 |
| London Hrps Limited | Construction | 2020 |
| Londonstroy Ltd | Construction | 2020 |
| Longevity Care Limited | Administrative & support | 2021 |
| Longprosper Associates Ltd | Other services | 2025 |
| Loom ENT Ltd | Information & communication | 2025 |
| Loop Dance Company | Arts & recreation | 2003 |
| Loose Road Developments Ltd | Real estate | 2014 |
| Lordico Promotions Limited | Arts & recreation | 2016 |
| Lordson Consultant Limited | Information & communication | 2018 |
| Lordswood Car & Commercials Ltd | Wholesale & retail | 2010 |
| Lordswood Chippy Limited | Hospitality | 2020 |
| Lordswood Dancentre Ltd | Education | 2019 |
| Lordswood Heating Services Ltd | Construction | 2017 |
| Lordswood Holdings Ltd | Administrative & support | 2018 |
| Lordswood Restaurants Ltd | Hospitality | 2025 |
| Lordswood Sports Supporters Club Limited | Wholesale & retail | 2020 |
| Lordswood Studio Centre Ltd | Arts & recreation | 2023 |
| Lordswood Supporters Limited | Wholesale & retail | 2024 |
| Lordswood Tree Care Ltd | Administrative & support | 2022 |
| Lordswood Village Catering Ltd | Hospitality | 2024 |