| Kwadaso Avenue Ltd | Hospitality | 2021 |
| KY Property Limited | Real estate | 2020 |
| Kyla Abode Ltd | Real estate | 2024 |
| Kynza K-J Ltd | Information & communication | 2024 |
| L a Tabarcea Ltd | Construction | 2017 |
| L C Transport Incorporated Limited | Transport & logistics | 2017 |
| L J Parker Limited | Construction | 2017 |
| L J Rafferty Property Ltd | Real estate | 2022 |
| L&D Limited | Financial services | 2023 |
| LA & EA Consultants Ltd | Construction | 2014 |
| LA Crem Ltd | Construction | 2010 |
| Labyrinth Directions Ltd | Information & communication | 2020 |
| Lachatte Ltd | Information & communication | 2025 |
| Lady Spencer House Ltd | Health & social care | 2009 |
| Lamay Engineering Services Ltd | Professional & scientific | 2015 |
| Lamika Enterprises Limited | Real estate | 2021 |
| Lamiri Ltd | Transport & logistics | 2019 |
| Lamolls (Agriculture) Limited | Agriculture & fishing | 2025 |
| Lanaghan Bros Limited | | 1973 |
| Lane Resources Limited | Manufacturing | 2025 |
| Langstone Construction Ltd | Construction | 2016 |
| Languagebees Ltd | Professional & scientific | 2024 |
| Larigba Enterprise Ltd | Wholesale & retail | 2024 |
| Larkham and Pike Estates Ltd | Real estate | 2021 |
| LAS Business Solutions Services Ltd | Information & communication | 2023 |
| Lasas Cleaning Services Ltd | Administrative & support | 2022 |
| Last Mile Technology Limited | Extraterritorial | 2013 |
| Latibule Limited | Real estate | 2020 |
| Laundry on App Limited | Other services | 2024 |
| Laundry UP on App Limited | Other services | 2025 |
| Lava Wholesale Ltd | Wholesale & retail | 2020 |
| Lavender Stone Limited | Wholesale & retail | 2026 |
| Lavish Beauty Soho Ltd | Other services | 2022 |
| Lavoro Group Ltd | Other services | 2017 |
| Lavoro Hospitality Limited | Administrative & support | 2018 |
| Law Capital Wealth Ltd | Financial services | 2021 |
| Law One Limited | Professional & scientific | 2021 |
| Layman Cost Management Services Ltd | Professional & scientific | 2022 |
| Lazerpie Limited | Arts & recreation | 2021 |
| LBC Exterior Cleaning Ltd | Administrative & support | 2011 |
| LBR Management Company Limited | Real estate | 2017 |
| LC Locum Services Ltd | Wholesale & retail | 2022 |
| LCD Logistics Ltd | Transport & logistics | 2022 |
| LCP Logistics Ltd | Transport & logistics | 2026 |
| LD Motors Ltd | Wholesale & retail | 2025 |
| LDN Features Ltd | Information & communication | 2025 |
| Le'Mood Ltd | Manufacturing | 2023 |
| Lead & Succeed Limited | Administrative & support | 2021 |
| Lead Generation Online Ltd | Information & communication | 2026 |
| Leading Edge Leadership Limited | Administrative & support | 2013 |
| Leading United Limited | Construction | 2025 |
| Leane Building Ltd | Construction | 2026 |
| Leaner Digital Limited | Information & communication | 2018 |
| Leb-Rus Ltd | Construction | 2023 |
| LEE COX Golf Ltd | Administrative & support | 2011 |
| LEE Rushby Photography Limited | Professional & scientific | 2016 |
| Legal Law Services Limited | Professional & scientific | 2019 |
| Leggeacy Investments Limited | Financial services | 2020 |
| Leighton Communication Ltd | Information & communication | 2018 |
| Lekha Solutions Limited | Information & communication | 2026 |
| Lemon Fuse Limited | Professional & scientific | 2015 |
| LES Chalets Résidences Limited | Hospitality | 2023 |
| LET Group Ltd | Real estate | 2019 |
| Letton Landlords Limited | Real estate | 2021 |
| Lewis Tyler & Sons (Fencing) Limited | Manufacturing | 1975 |
| Lewis Tyler Limited | Financial services | 2015 |
| Leyland Homes Ltd | Real estate | 2019 |
| LFG Services Ltd | Information & communication | 2022 |
| LG Site Services Limited | Construction | 2026 |
| LH Accountancy Limited | Professional & scientific | 2019 |
| Liberty Product Ltd | Wholesale & retail | 2024 |
| Libra Business Ltd | Administrative & support | 2025 |
| Life of Rick Limited | Information & communication | 2022 |
| Light and Hope (UK) Limited | Other services | 2018 |
| Light Premier Consults Ltd | Other services | 2015 |
| Lighthouse Boxes Ltd | Wholesale & retail | 2025 |
| Lightning Electrical Contractors Limited | Construction | 2016 |
| Lightshine Childrens Homes Ltd | Public administration | 2019 |
| Lili Ghoni Limited | Information & communication | 2008 |
| Lily Pain Experts Limited | Health & social care | 2020 |
| Lima Property 1 Limited | Real estate | 2022 |
| Lima Property 2 Limited | Real estate | 2022 |
| Lima Property 3 Limited | Real estate | 2022 |
| Lima Property 4 Limited | Real estate | 2026 |
| Lime Face BAO Ltd | Hospitality | 2025 |
| Lincolnshire Property Partners Limited | Real estate | 2017 |
| Lind Erpel Ltd | Professional & scientific | 2026 |
| Liningsports Limited | Wholesale & retail | 2025 |
| Link Fashion & Co Ltd | Wholesale & retail | 2019 |
| Lioraedge Ltd | Information & communication | 2025 |
| Lisa Marie Presley Radio Limited | Information & communication | 2025 |
| Lisbone UK Ltd | Health & social care | 2019 |
| Listen Media Limited | Information & communication | 2010 |
| Little & Large Hospitality Limited | Hospitality | 2021 |
| Little & Large Inns Limited | Hospitality | 2021 |
| Little & Large Leisure Limited | Hospitality | 2026 |
| Little & Large PUB Company Ltd | Hospitality | 2019 |
| Little and Large Hotel Company Limited | Hospitality | 2023 |
| Little Green Close Management Limited | Households | 2023 |
| Little Green Land Limited | Construction | 2023 |