| L&H Fish Ltd | Hospitality | 2024 |
| LA Cantinella Ltd | Wholesale & retail | 2025 |
| Lajw Holding Co Ltd | Financial services | 2026 |
| Lake Fabrications Limited | Manufacturing | 2011 |
| Lambert Ashcroft Limited | Professional & scientific | 2018 |
| Lancelot (Cwhg) Ltd | Real estate | 2023 |
| Languageserve Limited | Administrative & support | 2017 |
| Lariz Air Conditioning Limited | Construction | 2026 |
| LAS Theatre C.I.C. | Arts & recreation | 2012 |
| Laskar Brothers Ltd | Hospitality | 2024 |
| Lasthiga Limited | Real estate | 2026 |
| Latch Properties Ltd | Real estate | 2021 |
| Launderette Records Ltd | Information & communication | 2021 |
| Laurel House Management Limited | Households | 2023 |
| Lausanne Terrace Management Company Limited | Households | 2022 |
| Laws Building Solutions Ltd | Wholesale & retail | 2016 |
| LCS Holdings and Investments Ltd | Financial services | 2025 |
| LD Bookkeeping Services Ltd | Professional & scientific | 2026 |
| LDR Holdings Group Ltd | Hospitality | 2026 |
| Leaf Forrest Limited | Real estate | 2013 |
| Learn London Tours and Writing Limited | Administrative & support | 2019 |
| Leave Only What Matters Limited | Information & communication | 2026 |
| LEE Pearce Ltd | Construction | 2025 |
| Leeves Property Limited | Hospitality | 2024 |
| Legable Limited | Real estate | 1973 |
| Legacy Acquisitions Ltd | Real estate | 2024 |
| Legea Sports UK Ltd. | Wholesale & retail | 2019 |
| Lemon Property (Margate) Limited | Households | 2020 |
| Leon Cars Ltd | Transport & logistics | 2022 |
| Leos Management Ltd | Construction | 2023 |
| Lesley Boerio Ltd | Information & communication | 2021 |
| Lestrange Street 30 Cleethorpes Limited | Real estate | 2022 |
| Let's Go Pizza Ltd | Hospitality | 2019 |
| Levantium Ltd | Information & communication | 2020 |
| Level Eleven Photography Limited | Professional & scientific | 2017 |
| Lewis Offshore Consultancy Ltd | Construction | 2021 |
| LF Properties Limited | Construction | 2003 |
| LFG Investment Group Ltd | Financial services | 2026 |
| Liberty for ALL C.I.C. | Education | 2016 |
| Liberty Training Ltd | Education | 2013 |
| Lido Drill Shed Margate Limited | Arts & recreation | 2026 |
| Lido Sea Views Limited | Real estate | 2009 |
| Lido Streetview Ltd | Real estate | 2016 |
| Lifehaqs Ltd | Wholesale & retail | 2022 |
| Light of Foot Limited | Real estate | 2021 |
| Lighthouse Property and Window Cleaning Ltd | Construction | 2018 |
| Likha Partners Ltd | Professional & scientific | 2026 |
| Lily Nails Margate Ltd | Other services | 2026 |
| Limbo Arts Limited | Arts & recreation | 2003 |
| Limitless Community Programmes CIC | Education | 2025 |
| Limitless Sports Coaching Ltd | Manufacturing | 2023 |
| Linear Ltd | Professional & scientific | 2019 |
| Linkuestays Ltd | Real estate | 2025 |
| Lipolab Liposomal Ltd | Wholesale & retail | 2024 |
| Lipp UK Limited | Administrative & support | 2018 |
| Liquid Graphics Ltd | Professional & scientific | 2024 |
| Little Art Cart Limited | Arts & recreation | 2018 |
| Little Champs Community Interest Company | Education | 2023 |
| Little Swift Limited | Hospitality | 2019 |
| Little Treasure Properties Ltd | Real estate | 2021 |
| Littoralia Ltd | Wholesale & retail | 2017 |
| LJC Advertising Ltd | Professional & scientific | 2017 |
| LJW Services & Logistics Limited | Other services | 2023 |
| Llbm Ltd | Real estate | 2024 |
| LM Plumbing Limited | Construction | 2022 |
| LME Scaffolding Limited | Construction | 2017 |
| LMS Works Ltd | Construction | 2020 |
| LMW Restaurants Ltd | Hospitality | 2015 |
| LN KIM Ltd | Health & social care | 2019 |
| Logan Property Group Ltd | Administrative & support | 2026 |
| Lohar Limited | Wholesale & retail | 2022 |
| London International Filmmaker Festival Ltd | Information & communication | 2012 |
| Lonely Dreamers Films Ltd | Information & communication | 2012 |
| Long Swan Productions Ltd | Information & communication | 2026 |
| Lookline Property Ltd | Construction | 2024 |
| Lord Barnard Enterprises Limited | Wholesale & retail | 2020 |
| Lord Benson Procurement Ltd | Construction | 2019 |
| Lorries Ltd | Wholesale & retail | 2019 |
| Lottie HL Ltd | Professional & scientific | 2024 |
| Loudmouth Logistics Ltd | Arts & recreation | 2018 |
| Love and Design Limited | Information & communication | 2020 |
| Love IS the Law Productions Ltd | Arts & recreation | 2023 |
| Love Lane Cottages Ltd | Hospitality | 2022 |
| Love REC Limited | Administrative & support | 2022 |
| Love Tallow Ltd | Wholesale & retail | 2025 |
| Love Vinyl DRS Limited | Wholesale & retail | 2015 |
| Loved by Ashley Limited | Professional & scientific | 2024 |
| Lowen Coffee Ltd | Manufacturing | 2024 |
| Lowest 2 BID Limited | Wholesale & retail | 2014 |
| Loyal Catering Ltd | Hospitality | 2024 |
| Loyalty Connections Limited | Transport & logistics | 2007 |
| LPC Healthcare Limited | Health & social care | 2020 |
| LR Luxe Competitions Limited | Administrative & support | 2025 |
| LRB Site Solutions Limited | Construction | 2019 |
| Lsrf Limited | Real estate | 2024 |
| Lucia Adsett Skin Health Ltd | Other services | 2024 |
| Lucy’S Tea Rooms Ltd | Wholesale & retail | 2023 |
| Luke Strange Ltd | Professional & scientific | 2021 |
| Lullier Properties Limited | Real estate | 2012 |
| Lulu’S Gelato Limited | Manufacturing | 2022 |