| LMJ Tech Ltd | Wholesale & retail | 2025 |
| LMR Southall Limited | Wholesale & retail | 2022 |
| Lngworks Ltd | Professional & scientific | 2020 |
| Lnksa Ltd | Manufacturing | 2023 |
| Local Carpet Fitter Ltd | Construction | 2024 |
| Local Construction Ltd | Construction | 2021 |
| Local Green Plumbing Limited | Construction | 2025 |
| Local Hub Express Ltd | Wholesale & retail | 2026 |
| Local Pizza Company Ltd | Wholesale & retail | 2014 |
| Local Store Food and Wine Ltd | Wholesale & retail | 2026 |
| Local Supermarkets Group Ltd | Wholesale & retail | 2023 |
| Local Walker Ltd | Wholesale & retail | 2021 |
| Localchefs Limited | Hospitality | 2024 |
| Locumprime Ltd | Administrative & support | 2010 |
| Logan Mackay Ltd | Manufacturing | 2015 |
| Logi Express Limited | Transport & logistics | 2025 |
| Logic Transport Ltd | Transport & logistics | 2025 |
| Loginet Solutions Limited | Information & communication | 2014 |
| Lona Care Ltd | Health & social care | 2019 |
| Londis Hounslow Limited | Wholesale & retail | 2010 |
| London & Strategic Estates Limited | Real estate | 1981 |
| London Academy Edtech UK Ltd | Education | 2018 |
| London Airport Hotels Limited | Hospitality | 2007 |
| London Arena Investments Limited | Financial services | 2012 |
| London Asian Food Festival Ltd | Wholesale & retail | 2019 |
| London Auto Repairs Limited | Wholesale & retail | 2020 |
| London Bike Repairs and Car Parts Limited | Wholesale & retail | 2025 |
| London Business and Management School Ltd | Education | 2015 |
| London Car Market Limited | Wholesale & retail | 2017 |
| London Care & Support Limited | Health & social care | 2018 |
| London Care and HR Limited | Administrative & support | 2025 |
| London Centre of Oral Rehabilitation and Pain Medicine Ltd | Health & social care | 2020 |
| London Childcare Solutions Ltd | Education | 2021 |
| London College of Online Studies Limited | Education | 2020 |
| London Commercial Supplies Ltd | Wholesale & retail | 2024 |
| London Concorde Cars Ltd | Transport & logistics | 2024 |
| London Dream Team Ltd | Wholesale & retail | 2016 |
| London Ethnic Ltd | Professional & scientific | 2011 |
| London Express Cars Ltd | Transport & logistics | 2016 |
| London Express Zone Ltd | Hospitality | 2023 |
| London EYE Real Estates UK Ltd | Real estate | 2022 |
| London Film City Ltd. | Information & communication | 2016 |
| London Film City RD Ltd | Administrative & support | 2026 |
| London Film Security Service Ltd | Administrative & support | 2025 |
| London Ganesh Utsava Samithi | Health & social care | 2018 |
| London Home Developers Ltd | Construction | 2024 |
| London Hybrid Cars Ltd | Administrative & support | 2024 |
| London Investment Market Ltd | Real estate | 2020 |
| London LUX Transporter Ltd | Transport & logistics | 2024 |
| London Mambas Basketball Ltd | Education | 2025 |
| London Mayfair Investment Limited | Real estate | 2017 |
| London Melodies Ltd | Hospitality | 2025 |
| London Performance Hub Ltd | Wholesale & retail | 2023 |
| London Prime Construction and Builders Ltd | Construction | 2024 |
| London Property Invest Limited | Construction | 2020 |
| London Reality Ltd | Real estate | 2025 |
| London Refined Construction Ltd | Construction | 2025 |
| London Road 12 Ltd | Real estate | 2023 |
| London Security and Logistics Ltd | Transport & logistics | 2023 |
| London Supported Living Ltd | Administrative & support | 2026 |
| London Taekwondo Titans Ltd | Education | 2024 |
| London Tiles Ltd | Real estate | 2012 |
| London Trading Zone Ltd | Education | 2023 |
| London Training Group Limited | Information & communication | 2017 |
| London Training Center Ltd | Administrative & support | 2024 |
| London Transport Management Ltd | Administrative & support | 2016 |
| London Travel Ltd | Administrative & support | 2022 |
| London West Cars Ltd | Wholesale & retail | 2022 |
| Londoner Food and Wine Ltd | Wholesale & retail | 2025 |
| Londonoutsourcing Limited | Other services | 2019 |
| Long Accommodation Ltd | Hospitality | 2023 |
| Longacre Development & Management Limited | Real estate | 2021 |
| Longani Investments Ltd | Financial services | 2022 |
| Longway Estates Limited | Real estate | 2009 |
| Look Y Ltd | Construction | 2023 |
| Lookntook Ltd | Wholesale & retail | 2023 |
| Looks Essentials Ltd | Wholesale & retail | 2019 |
| Lopez Impex Ltd | Wholesale & retail | 2023 |
| Lopez Unicons Ltd | Education | 2024 |
| Loqii Ltd. | Manufacturing | 2025 |
| Lord Clyde Hounslow Limited | Hospitality | 2018 |
| Lord Design & Build Ltd | Construction | 2026 |
| Lorraine's Tropical Flavours Limited | Wholesale & retail | 2021 |
| Lota Group Limited | Financial services | 2026 |
| Lotas Property Group Ltd | Real estate | 2020 |
| Lotus Aerospace Ltd | Manufacturing | 2016 |
| Lotus Marketing Consultancy Ltd | Professional & scientific | 2011 |
| Lotus Systems Ltd | Information & communication | 2010 |
| Lotus&Larch Ltd | Wholesale & retail | 2026 |
| Loudwater Investments Limited | Real estate | 2024 |
| Love Bows Ltd | Arts & recreation | 2021 |
| Lovell Chohan Solicitors Limited | Professional & scientific | 2008 |
| Loyal 2 THA Game Ltd | Wholesale & retail | 2025 |
| Loyalties. Ltd | Other services | 2025 |
| Loyalty Property Services Limited | Real estate | 2019 |
| Lozdon Group Limited | Administrative & support | 2016 |
| Lpcb Ltd | Construction | 2026 |
| Lrch Bakery Ltd | Wholesale & retail | 2022 |
| Lrdn Limited | Education | 2017 |
| Lrdp Ltd | Health & social care | 2025 |