| Logicor Ventures Ltd | Manufacturing | 2013 |
| LOK Developments JV2 Ltd | Construction | 2017 |
| Lok's Capital Ltd | Wholesale & retail | 2021 |
| Lok's Tiger Ltd | Real estate | 2019 |
| London Developers Ltd | Real estate | 2013 |
| London Etiquette and Business School Ltd | Information & communication | 2012 |
| London Lift Group Ltd | Professional & scientific | 2019 |
| London With a Local Limited | Administrative & support | 2018 |
| Long Moor Developments Limited | Construction | 2020 |
| Long Range Solutions Limited | Manufacturing | 2025 |
| Longevity Limited | Administrative & support | 2018 |
| Longspoon PUB Co Ltd | Hospitality | 2023 |
| Look Who's Talking (Celebrity Speakers) Limited | Professional & scientific | 2003 |
| Lord Cafe Limited | Hospitality | 2024 |
| Lord Opportunities Ltd | Construction | 2021 |
| Lordprospershotit Ltd | Professional & scientific | 2025 |
| Lords Solicitors (Wakefield) Limited | Professional & scientific | 2013 |
| Lost Cause Brewing Co Ltd | Manufacturing | 2024 |
| Lotus Home Care Limited | Health & social care | 2015 |
| Lotus One Limited | Health & social care | 2011 |
| Loud Nutrition Clinic Ltd | Health & social care | 2024 |
| Louie B Limited | Hospitality | 2012 |
| Louiepaul Leisure Ltd | Hospitality | 2017 |
| Louise Davies Consultancy Ltd | Professional & scientific | 2022 |
| Love Nails & Spa Beauty Limited | Other services | 2023 |
| Love Nails HQ Ltd | Other services | 2026 |
| Love Sparkles Ltd | Administrative & support | 2025 |
| Love to LET Limited | Real estate | 2020 |
| Love Warranty Limited | Other services | 2011 |
| Love YOU Aesthestics Limited | Other services | 2022 |
| Lovebitesng Ltd | Hospitality | 2024 |
| Loveej COM Limited | Professional & scientific | 2025 |
| Lower Stone Head Farm Limited | Real estate | 2021 |
| LP SD Twenty Three Limited | Wholesale & retail | 2023 |
| LP10 Ltd | Financial services | 2019 |
| LPL Media Ltd | Professional & scientific | 2021 |
| LPW (Europe) Ltd | Administrative & support | 2007 |
| LPW Carcare Ltd | Administrative & support | 2008 |
| LPW Fleetcare Limited | Wholesale & retail | 2012 |
| LPW Fleetparts Limited | Wholesale & retail | 2005 |
| LPW Fleetsales Limited | Wholesale & retail | 1998 |
| LPW Group Holdings Limited | Financial services | 2020 |
| LPW Group Limited | Financial services | 2025 |
| LPW Truckwash Limited | Extraterritorial | 2012 |
| LR Assets Ltd | Real estate | 2023 |
| LR Care Ltd | Professional & scientific | 2023 |
| LR Drainage Solutions Limited | Water & waste | 2025 |
| LR Project Management Limited | Professional & scientific | 2013 |
| LRH Content Limited | Information & communication | 2018 |
| LRT Electrical Ltd | Construction | 2020 |
| LS Builders (Leeds) Ltd | Construction | 2023 |
| LS Events & Projects Ltd | Professional & scientific | 2026 |
| LSL Meats ( the Meat Hook). Ltd | Wholesale & retail | 2022 |
| LSS Investments Ltd. | Real estate | 2014 |
| LSS Wakefield Ltd. | Real estate | 2011 |
| LT Aris Ltd | Transport & logistics | 2025 |
| LT Gintaro Ltd | Transport & logistics | 2024 |
| LT Renewables Limited | Professional & scientific | 2023 |
| LT SVJ Enterprises Ltd | Financial services | 2025 |
| LTS2 Ltd | Real estate | 2011 |
| Lucani International Ltd | Information & communication | 2025 |
| Lucian Collections Ltd | Administrative & support | 2025 |
| Lucidlayer Ltd | Information & communication | 2025 |
| Lucinda Ingleby Limited | Professional & scientific | 2020 |
| Lucky by Design Ltd | Professional & scientific | 2025 |
| Lucky Flower TA Ltd | Hospitality | 2024 |
| Luddite Industries Limited | Professional & scientific | 2017 |
| Luela Ltd | Wholesale & retail | 2024 |
| Luis Fernandes Ltd | Manufacturing | 2021 |
| Luka Group Ltd | Other services | 2014 |
| Luke Ashley Limited | Professional & scientific | 2025 |
| Luke Hirst Coaching Ltd | Education | 2021 |
| Lukes Legacy Bereavement Support Ltd | Health & social care | 2023 |
| Lulu’S Collection Ltd | Wholesale & retail | 2025 |
| Luma Foods Limited | Hospitality | 2026 |
| Lumbs Quality Ice-Cream Limited | Hospitality | 2016 |
| Lumiere Solutions Ltd | Construction | 2010 |
| Lumify Ltd | Professional & scientific | 2025 |
| Lumra Advisory Ltd | Professional & scientific | 2025 |
| Luna & Co Dog Services Ltd | Wholesale & retail | 2021 |
| Luna Investment Group Ltd | Real estate | 2019 |
| Luna Property Group Ltd | Real estate | 2019 |
| Lunariskin Ltd | Other services | 2025 |
| Lunnora Ltd. | Wholesale & retail | 2025 |
| Lunny & Stanley Ltd | Other services | 2019 |
| Lupfaw 515 Limited | Financial services | 2019 |
| Lupfaw 529 Limited | Extraterritorial | 2019 |
| Lupin Close Residents Ltd | Construction | 2023 |
| Lupset Convenience Store Limited | Wholesale & retail | 2025 |
| Lupset Jubilee Hall Community Centre Limited | Health & social care | 2013 |
| Lupset Store Limited | Wholesale & retail | 2003 |
| Lush Bakery and Co Ltd | Wholesale & retail | 2025 |
| Lutek Limited | Administrative & support | 2026 |
| Luthan Solutions Ltd | Information & communication | 2013 |
| LUV 2 Iron Limited | Extraterritorial | 2008 |
| Luxe Beauty Wholesale Limited | Wholesale & retail | 2025 |
| Luxe FAB Ltd | Wholesale & retail | 2018 |
| Luxe Vision Ltd | Health & social care | 2023 |
| Luxhouss Ltd. | Real estate | 2025 |
| Luxino Enterprises Ltd | Wholesale & retail | 2025 |