| Langley Kebab and Grill Ltd | Hospitality | 2023 |
| Langley Kebab Limited | Hospitality | 2025 |
| Langley Logistics Services Ltd | Transport & logistics | 2025 |
| Langley Meat & Poultry Ltd | Wholesale & retail | 2022 |
| Langley Plumbing & Electrical Limited | Wholesale & retail | 2013 |
| Langley Property Holdings Limited | Real estate | 2018 |
| Langley Tasty Peri Peri Ltd | Hospitality | 2024 |
| Langley Telugu Association Ltd | Other services | 2015 |
| Langley Tiffins Limited | Hospitality | 2025 |
| Langley Tutors Ltd | Education | 2018 |
| Langmere Construction Ltd | Construction | 2025 |
| Langmere Developments Ltd | Construction | 2025 |
| Langmere Holdings Ltd | Financial services | 2025 |
| Langstone Conservation Ltd | Construction | 2024 |
| Lannister Holdings Corporation Limited | Professional & scientific | 2024 |
| Lantel Consultants | | 1996 |
| Lantern F&B Limited | Hospitality | 2019 |
| Lark Solutions Limited | Information & communication | 2006 |
| Lark View Care Limited | Health & social care | 2020 |
| Lars PVT Ltd | Wholesale & retail | 2023 |
| Larz Europe Ltd | Wholesale & retail | 2020 |
| LAS Infosystem Ltd | Information & communication | 2015 |
| Lasen Legal Consultancy Ltd | Professional & scientific | 2024 |
| Laser and Skin LAB Ltd | Other services | 2025 |
| Laser by Hiri Ltd | Other services | 2018 |
| Laser Day Ltd | Other services | 2019 |
| Lasting Links Limited | Professional & scientific | 2011 |
| Lasuch Cakes Ltd | Manufacturing | 2018 |
| Lasuch Limited | Manufacturing | 2010 |
| Lataraj Holdings Ltd | Real estate | 2018 |
| LAU Skin Limited | Wholesale & retail | 2024 |
| Laughing Matters Ltd | Health & social care | 2023 |
| Laur Popop Limited | Administrative & support | 2022 |
| Laura Driving School Ltd | Education | 2021 |
| Lauran Construction Ltd | Construction | 2010 |
| Lauran Estate Ltd | Real estate | 2023 |
| Laurels Care Home Limited | Health & social care | 2019 |
| Lauretta Homes Ltd | Real estate | 2019 |
| Lauty Ltd | Real estate | 2026 |
| Lavington Build Ltd | Construction | 2026 |
| Lavish Looms London Ltd | Wholesale & retail | 2026 |
| Lawaier Ltd | Information & communication | 2023 |
| Lawkland Limited | Real estate | 2018 |
| Lawkland Management Company Limited | Administrative & support | 1992 |
| Lawmillie Communications Limited | Professional & scientific | 2025 |
| Lawsons Wedding and Funeral Services Limited | Wholesale & retail | 2012 |
| Laxan & Sons Limited | Real estate | 2026 |
| Layaesthetics Limited | Other services | 2025 |
| Layna Cares Limited | Administrative & support | 2023 |
| Lazik Transport Ltd | Transport & logistics | 2024 |
| Lazurite Blue Ltd | Information & communication | 2019 |
| LB Civil Constructions Ltd | Construction | 2018 |
| LB Zuhaib Furniture Ltd | Wholesale & retail | 2024 |
| Lbmc Limited | Real estate | 2013 |
| LBP Consultancy Limited | Professional & scientific | 2014 |
| LBV Fashion Ltd | Wholesale & retail | 2015 |
| LC UK Developments Ltd | Construction | 2021 |
| LCD Services Ltd | Professional & scientific | 2025 |
| Lcmuk Ltd | Health & social care | 2019 |
| LD Cleaning Services Ltd | Other services | 2018 |
| LDG Courier Services Ltd | Transport & logistics | 2020 |
| LDS HH Limited | Hospitality | 2025 |
| LDS Solihull Ltd | Hospitality | 2026 |
| LDS ZE Ltd | Hospitality | 2026 |
| LE Frenchie Club Ltd | Wholesale & retail | 2026 |
| LE Slowe Limited | Real estate | 2024 |
| LE VOL Limited | Wholesale & retail | 2015 |
| LEA RIG Ltd | Professional & scientific | 2020 |
| Lead Clinical Analytics Ltd | Health & social care | 2017 |
| Lead Shark Ltd | Professional & scientific | 2020 |
| Leadhership Academy Ltd | Professional & scientific | 2023 |
| Leading Scope Ltd | Information & communication | 2020 |
| Leaf and Lush Ltd | Wholesale & retail | 2026 |
| Leaf. DL Ltd | Transport & logistics | 2018 |
| Leak Stop Roofing Ltd | Manufacturing | 2025 |
| Lean Manufacturing Technology Ltd | Professional & scientific | 2019 |
| Lean Systems Consulting Ltd | Professional & scientific | 2012 |
| Leancompass Consultancy Limited | Professional & scientific | 2025 |
| Leap Homes Ltd | Real estate | 2020 |
| Learn&Playstore Ltd | Wholesale & retail | 2023 |
| Learners Education Centre Limited | Education | 2025 |
| Learning Creed UK Ltd | Education | 2022 |
| Learning HUT Ltd | Education | 2025 |
| Learning Treasure Ltd | Education | 2022 |
| Learning Treat Ltd | Information & communication | 2024 |
| Lease a Car Limited | Financial services | 2003 |
| Leaseplan UK Limited | Administrative & support | 1978 |
| Leasingham Retail Ltd | Wholesale & retail | 2025 |
| Leather Artisans Limited | Wholesale & retail | 2023 |
| Leather Handcrafts Ltd | Wholesale & retail | 2024 |
| Leathernativ Ltd | Wholesale & retail | 2025 |
| Lebaneats WSR Berkshire Ltd | Hospitality | 2022 |
| Lebanese Food Market Ltd | Wholesale & retail | 2019 |
| Lebanese Tasty Grill Ltd | Hospitality | 2019 |
| Lebanese Village Restaurant Ltd | Hospitality | 2019 |
| LEC Global Ltd | Transport & logistics | 2024 |
| LED Hydroponic Ltd | Wholesale & retail | 2010 |
| Ledger Craft Solution Limited | Professional & scientific | 2025 |
| LEE Lane Ltd | Real estate | 2020 |
| Leeds Pro Ltd | Other services | 2023 |