| Lakeside Foods Limited | Hospitality | 2015 |
| Lakeside Smart Homes Limited | Real estate | 2018 |
| Lakeview Marquee Ltd | Hospitality | 2010 |
| Lakewood Pharmacy Limited | Wholesale & retail | 2022 |
| Lakh Construction & Training Ltd | Construction | 2020 |
| Lakhan SMG Limited | Professional & scientific | 2025 |
| Lakhbir Properties Limited | Real estate | 2018 |
| Lakhsai Limited | Extraterritorial | 2023 |
| Lakhwinder Singh Limited | Construction | 2025 |
| Lakhwinder SINGH2 Ltd | Construction | 2021 |
| Lakshaya Capital Limited | Real estate | 2021 |
| Lakshmifoods Ltd | Hospitality | 2025 |
| Lakshmikrishna Homes Ltd | Real estate | 2018 |
| Lakshmikrishna Technologies Limited | Information & communication | 2010 |
| Lala GE & Sons Ltd | Wholesale & retail | 2014 |
| Lalzit Bay Development Limited | Financial services | 2011 |
| LAM Consultancy London Limited | Education | 2024 |
| Lamaz Estates Limited | Real estate | 2025 |
| Lamb Lane Developments Limited | Construction | 2022 |
| Lambata Investments Limited | Real estate | 2025 |
| Lambourne Real Estates Ltd | Real estate | 2020 |
| Lambrienos Florists Limited | Wholesale & retail | 2014 |
| Lamhibaw Ltd | Information & communication | 2015 |
| Lamisco Limited | Wholesale & retail | 2025 |
| Lammy(Uk) Ltd | Wholesale & retail | 2025 |
| Lamonde Investments Limited | Real estate | 2004 |
| Lana Perl Cleaning Ltd | Administrative & support | 2025 |
| Lana Reformer Ltd | Arts & recreation | 2024 |
| Lancaster Commercial Group Limited | Real estate | 2026 |
| Lancetech Limited | Wholesale & retail | 2019 |
| Lancing House Ltd | Hospitality | 2022 |
| Lancing Road Limited | Real estate | 2022 |
| Land Education CIC | Education | 2023 |
| Landa Marketing Ltd | Wholesale & retail | 2025 |
| Landa of Dubai Ltd | Real estate | 2026 |
| Landa of London Limited | Real estate | 2026 |
| Landage Group (Longlands RD) Limited | Construction | 2022 |
| Landage Group (UK) Limited | Real estate | 2020 |
| Landaq Limited | Real estate | 2016 |
| Lander Properties Limited | Real estate | 2023 |
| Landermere Development Ltd | Construction | 2018 |
| Landhaven Ltd | Real estate | 2017 |
| Landlock Investments Ltd | Real estate | 2018 |
| Landlord Certs Ltd | Construction | 2021 |
| Landlord Facilities Ltd | Construction | 2020 |
| Landlord Housing Solutions London Ltd | Real estate | 2025 |
| Landmark 3610 Ltd | Hospitality | 2023 |
| Landmark Construction 965 Ltd | Construction | 2021 |
| Landmark Events & Decor Ltd | Other services | 2022 |
| Landmark Media Digital Limited | Arts & recreation | 2021 |
| Landmark Motors Ltd | Wholesale & retail | 2023 |
| Landmark Property Ltd | Real estate | 2025 |
| Landmark Residential Inventory Ltd | Professional & scientific | 2016 |
| Landor Construction Limited | Construction | 2018 |
| Landrescue Limited | Construction | 2017 |
| Lands END Developments Limited | Construction | 2021 |
| Landscape Experts Ltd | Administrative & support | 2015 |
| Landseer Management Limited | Administrative & support | 1998 |
| Landseye Ltd | Real estate | 2020 |
| Landview UK Trade Ltd | Construction | 2018 |
| Landywood Stores Limited | Wholesale & retail | 2003 |
| Lang & Hill Properties Limited | Real estate | 2019 |
| Langla Estates Limited | Real estate | 2025 |
| Lanka Properties (Global) Ltd | Real estate | 2026 |
| Lanpaul Limited | Construction | 2018 |
| Lansbury Scaffolding Limited | Construction | 2019 |
| Lantern Security and FM Services Ltd | Other services | 2023 |
| Lanx Ltd | Construction | 2022 |
| Laptop Zone Ltd | Wholesale & retail | 2019 |
| Laptops and Phones Limited | Wholesale & retail | 2016 |
| Laptops and Phones Repair Limited | Wholesale & retail | 2016 |
| LAR Legal Limited | Professional & scientific | 2017 |
| Lara Global Limited | Wholesale & retail | 2025 |
| Lara Landmark Ltd | Real estate | 2019 |
| Laraib Property Developments Ltd | Real estate | 2020 |
| Larges ST Ltd | Real estate | 2016 |
| Largewell Limited | Real estate | 1992 |
| Lari Adda Ltd | Hospitality | 2026 |
| LAS Fierbinti London Ltd | Real estate | 2023 |
| LAS Vapers Limited | Wholesale & retail | 2018 |
| Lasani Biryani Ltd | Hospitality | 2023 |
| Laser 4 Ladies Ltd | Administrative & support | 2016 |
| Laser Perfect Ltd | Other services | 2018 |
| Laserderm Clinic Ltd | Other services | 2025 |
| Laserlpaservices Ltd | Health & social care | 2019 |
| Laserpod Ltd | Manufacturing | 2015 |
| Lash INK London Limited | Other services | 2022 |
| Lashesbylxo Ltd | Other services | 2022 |
| Last Book Service Limited | Wholesale & retail | 2018 |
| Last Call INK Limited | Other services | 2019 |
| Last Minute Solutions Ltd | Financial services | 2024 |
| Last Option Property Ltd | Construction | 2022 |
| Lasting Impressions Projects Limited | Real estate | 2013 |
| Lateboysprestige Ltd | Administrative & support | 2025 |
| Latha Grocery Limited | Wholesale & retail | 2019 |
| Latif VEG and Meat Ltd | Manufacturing | 2024 |
| Latin 8 Productions Limited | Arts & recreation | 2010 |
| Latin Soul Events Ltd | Hospitality | 2026 |
| Latlon Technologies Ltd | Information & communication | 2011 |
| Latnag Ltd | Construction | 2015 |