| LT Compliance Limited | Professional & scientific | 2023 |
| LT Decorating Limited | Construction | 2023 |
| LT Distribution Limited | Wholesale & retail | 2008 |
| LT Interiors Limited | Construction | 2024 |
| LT Planning Limited | Professional & scientific | 2023 |
| LT Swiftpro Ltd | Households | 2018 |
| LT Transport & Logistics Ltd | Transport & logistics | 2020 |
| LTA Limited | Real estate | 2016 |
| LTC Technologies Ltd | Financial services | 2016 |
| Ltd Sales Ltd | Other services | 2014 |
| Lthr Ltd | Wholesale & retail | 2024 |
| LTL Thermo Ltd. | Transport & logistics | 2014 |
| LTM (UKK) Limited | Transport & logistics | 2018 |
| LTM International Management Consultancy Ltd | Other services | 2019 |
| LTP Chauffeurs Ltd | Transport & logistics | 2024 |
| Ltte Transport Ltd | Wholesale & retail | 2023 |
| LU Group Ltd | Construction | 2019 |
| Luana Logistics Ltd | Transport & logistics | 2019 |
| Luana Luxe Ltd | Other services | 2025 |
| Lubinda Limited | Wholesale & retail | 2025 |
| Luca Property Holdings Ltd | Real estate | 2025 |
| Luca Real Estate Limited | Real estate | 2024 |
| Luca'Slinguine Ltd | Hospitality | 2023 |
| Lucar Investments Ltd | Real estate | 2019 |
| Lucas and Cruz Property Maintenance Ltd | Construction | 2020 |
| Lucas Glassworks Ltd | Construction | 2023 |
| Lucat Ltd | Information & communication | 2023 |
| Lucent Dreaming Ltd | Information & communication | 2021 |
| Luchy Renew Ltd | Professional & scientific | 2024 |
| Lucidtech Art Ltd | Wholesale & retail | 2025 |
| Lucie Morgan Limited | Administrative & support | 2013 |
| Lucifer Global Ltd | Wholesale & retail | 2019 |
| Luckora Interactive Ltd | Information & communication | 2026 |
| Lucky 13 Property Ltd | Real estate | 2020 |
| Lucky Black Star Ltd | Wholesale & retail | 2017 |
| Lucky Clover Life Ltd | Wholesale & retail | 2020 |
| Lucky Education Group Co., Ltd | Agriculture & fishing | 2021 |
| Lucky Events Ltd | Arts & recreation | 2026 |
| Lucky Global Limited | Wholesale & retail | 2019 |
| Lucky Hair Ltd | Other services | 2023 |
| Lucky Liga Ltd | Information & communication | 2025 |
| Lucky Stone Studios Ltd | Information & communication | 2013 |
| Lucmar Management Ltd | Hospitality | 2019 |
| Lucomo Limited | Wholesale & retail | 2023 |
| Lucrosus Limited | Financial services | 2020 |
| Lucy Birch Sleep Practitioner Ltd | Other services | 2025 |
| Lucy Reed Dental Hygiene Limited | Health & social care | 2014 |
| Ludi Talent Ltd | Administrative & support | 2025 |
| Ludis Holdings Limited | Arts & recreation | 2024 |
| Ludlow Community Access Transport Trust | Transport & logistics | 2012 |
| Ludlow Lewis Limited | Construction | 2005 |
| Ludlow Street Healthcare Group Limited | Professional & scientific | 2004 |
| Ludobyte Limited | Information & communication | 2021 |
| Ludovico Ltd | Wholesale & retail | 2025 |
| Ludus Art School CIC | Education | 2025 |
| Lugheim CYF | Manufacturing | 2025 |
| Lujelo Limited | Financial services | 2023 |
| LUK & Co Property Limited | Households | 2020 |
| Lukayan Property Rentals Ltd | Real estate | 2017 |
| Luke Mcdonald Properties Ltd | Households | 2024 |
| Luke Pavey Productions Ltd | Information & communication | 2022 |
| Luke Sage Financial Services Limited | Financial services | 2026 |
| Lula Lougueur Online Ltd | Wholesale & retail | 2019 |
| Lulabella Properties Limited | Real estate | 2020 |
| Lulianzhou Ltd | Wholesale & retail | 2025 |
| Lullabyz Nursery Limited | Health & social care | 2011 |
| Lulu & BOO Limited | Manufacturing | 2007 |
| Lulu (UK) Cross-Border E-Commerce Co., Ltd | Manufacturing | 2024 |
| Lulu Organics Cosmetics Ltd | Wholesale & retail | 2026 |
| Lulumax Property Development & Interiors Ltd | Construction | 2022 |
| Lulwat Al-Hadir Trading Limited | Wholesale & retail | 2025 |
| Luma Advisory Solutions Limited | Professional & scientific | 2024 |
| Luma Media Corporation Limited | Wholesale & retail | 2025 |
| Luma Veil Creations Ltd | Wholesale & retail | 2026 |
| Lumberjack AXE Throwing Limited | Arts & recreation | 2019 |
| Lumbock Ventures Limited | Financial services | 2018 |
| Lume Mode Ltd | Wholesale & retail | 2025 |
| Lumea Labs Limited | Information & communication | 2025 |
| Lumen Marketing Limited | Professional & scientific | 2020 |
| Lumen Nordic Office Ltd | Professional & scientific | 2026 |
| Lumen Property Ltd | Real estate | 2026 |
| Lumenera Ltd | Wholesale & retail | 2025 |
| Lumenocity Ltd | Wholesale & retail | 2018 |
| Lumenridge Ltd | Wholesale & retail | 2026 |
| Lumexa Advisory Ltd | Information & communication | 2025 |
| Lumi & SON Ltd | Hospitality | 2014 |
| Lumi Solutions Limited | Construction | 2026 |
| Lumina Care Consultancy Ltd | Professional & scientific | 2026 |
| Lumina Press Limited | Information & communication | 2025 |
| Luminant Electricals Limited | Wholesale & retail | 2009 |
| Luminapulse Ltd | Wholesale & retail | 2025 |
| Luminar GNS Ltd | Administrative & support | 2025 |
| Luminara Corporate Solutions Limited | Wholesale & retail | 2026 |
| Luminareach Media Limited | Professional & scientific | 2025 |
| Luminari Legal Limited | Professional & scientific | 2025 |
| Luminary Nexus Innovations Limited | Wholesale & retail | 2025 |
| Luminauraw Limited | Wholesale & retail | 2025 |
| Luminex Trading Ltd | Wholesale & retail | 2025 |
| Luminics Wave Ltd | Administrative & support | 2024 |
| Luminouseing Ltd | Wholesale & retail | 2025 |