| Lagodan Investments Limited | Real estate | 2012 |
| Lagodan Properties Limited | Real estate | 2013 |
| LAH Coffee Bar Ltd | Hospitality | 2024 |
| Lakshana Food Ltd | Hospitality | 2021 |
| Lami Limited | Financial services | 2026 |
| Land and Sea Tankerton Ltd | Hospitality | 2021 |
| Landlord Assist Ltd | Professional & scientific | 2021 |
| Lanes (South East) Ltd | Manufacturing | 2009 |
| Langdon Property Assets Ltd | Real estate | 2024 |
| Lanrick Holdings Limited | Financial services | 2017 |
| Lanrick Property Limited | Real estate | 2025 |
| Lapthorn Media Global Ltd | Information & communication | 2026 |
| Lapthorn Media Ltd | Information & communication | 2014 |
| Lapthorn Properties Ltd | Real estate | 2025 |
| Lareb Solutions Ltd | Wholesale & retail | 2018 |
| Larkspur Logistics Ltd | Administrative & support | 2025 |
| Lart Limited | Hospitality | 2012 |
| Laserclean Specialists Ltd | Administrative & support | 2026 |
| Lashvanth Limited | Wholesale & retail | 2026 |
| Launch Builders Limited | Construction | 2012 |
| Laurice Court Management Co. Limited | Households | 2004 |
| Lawtonash Safety Coach Ltd | Education | 2018 |
| LB Wellness Practice Limited | Extraterritorial | 2022 |
| Lboucher Limited | Health & social care | 2014 |
| LCL Group Management Ltd | Professional & scientific | 2025 |
| LDB Engineering Limited | Professional & scientific | 2015 |
| LE Club Ltd | Hospitality | 2019 |
| Lean With Dean Ltd | Arts & recreation | 2023 |
| LEE Bradfield Services Ltd | Construction | 2015 |
| LEE Eagleson Roofing Limited | Construction | 2022 |
| LEE Eyles Brickwork Limited | Construction | 2016 |
| Legre Ltd | Wholesale & retail | 2015 |
| LEH Property Group Ltd | Real estate | 2017 |
| Leisure Associates Ltd | Arts & recreation | 2019 |
| Leisure Link Ltd | Professional & scientific | 2020 |
| Lemongrass Outsourcing Limited | Administrative & support | 2021 |
| LEND4 Limited | Financial services | 2016 |
| Lennie's Food Ltd | Hospitality | 2025 |
| Leonardo Kent Ltd | Real estate | 2026 |
| Lercut Ltd | Wholesale & retail | 2024 |
| LES Wallen Manufacturing Limited | Information & communication | 1985 |
| Lets Make a Holiday Limited | Hospitality | 2022 |
| Lets Make a Home LLP | | 2020 |
| Lettings at 78 Limited | Real estate | 2006 |
| Leveluppconstruction Ltd | Construction | 2024 |
| Leverick Place Management Limited | Households | 2021 |
| LFB Consultancy Ltd | Professional & scientific | 2023 |
| LGC Accommodation Services Ltd | Hospitality | 2022 |
| LHM South East Brickwork Ltd | Construction | 2021 |
| Lidera Limited | Professional & scientific | 2026 |
| Lifebuilder Limited | Wholesale & retail | 2003 |
| Lifestyle Shopping Ltd | Wholesale & retail | 2014 |
| Lifetime Driveways Ltd | Construction | 2023 |
| Lift 'N' Shift Services Ltd | Construction | 2020 |
| Lighthouse Capital Investments Limited | Arts & recreation | 2012 |
| Lighthouse Capital Properties Limited | Real estate | 2025 |
| Lighthouse Capital Services Limited | Professional & scientific | 2025 |
| Liift Media Ltd | Information & communication | 2023 |
| LIL Mazikeen Creations Ltd | Wholesale & retail | 2026 |
| Lil'Jockeys Limited | Administrative & support | 2004 |
| Lilac Investments (Essex) Limited | Real estate | 2016 |
| Lilium Gate Property Management Company Limited | Households | 2004 |
| Lily Rose Media Ltd | Professional & scientific | 2025 |
| Lime Interactive Holdings Ltd | Real estate | 2016 |
| Lime Interactive Limited | Information & communication | 2007 |
| Liminal Events CIC | Professional & scientific | 2024 |
| Limitless Sparkle Ltd | Administrative & support | 2021 |
| Linden Chase Management Company Limited | Households | 1988 |
| Linev Group Ltd | Financial services | 2019 |
| Linev Systems UK Limited | Manufacturing | 2006 |
| Link Kent CIC | Arts & recreation | 2026 |
| Lion Martial Arts Limited | Education | 2003 |
| Liquid Technology Roofing Solutions Ltd | Construction | 2016 |
| Lisa Maidment Ltd | Professional & scientific | 2025 |
| Lissie Jane Limited | Professional & scientific | 2019 |
| Litebuilders Limited | Administrative & support | 2009 |
| Little Door Properties Ltd | Hospitality | 2025 |
| Little Earth Worms Limited | Other services | 2008 |
| Little Kraken Ltd | Hospitality | 2026 |
| Little Ones Variety Events CIC | Health & social care | 2024 |
| Little Stour Ltd | Construction | 2021 |
| Little Walkers Preschool Ltd | Education | 2025 |
| Littlebrook Lettings Limited | Real estate | 2017 |
| Living Stones Homes Limited | Real estate | 2004 |
| LIZ George Wellbeing Centre Ltd | Health & social care | 2024 |
| LJ Global Concierge Ltd | Administrative & support | 2025 |
| Ljdg Ltd | Financial services | 2021 |
| LJP Reporting Services Limited | Education | 2022 |
| LK Air CON and Ventilation Ltd | Energy | 2019 |
| LKB OT Ltd | Extraterritorial | 2016 |
| LM and SM Electrical Limited | Construction | 2015 |
| LM Development Deal Ltd | Construction | 2026 |
| Lmbc Projects Ltd | Financial services | 2019 |
| LNG Contractors Ltd | Construction | 2021 |
| LNM South East Roofing Contractors Limited | Construction | 2020 |
| Local Access Limited | Construction | 2024 |
| Locks of Sandwich Cycles Ltd | Wholesale & retail | 2010 |
| Loel & Co International Ltd | Wholesale & retail | 2014 |
| Logan Stewardship Consultancy Ltd | Professional & scientific | 2025 |
| Logic Mortgage Solutions Ltd | Financial services | 2019 |