| Lp-Dm Consulting Ltd | Professional & scientific | 2023 |
| LPC & Co Ltd | Health & social care | 2014 |
| Lpsn Relocations Ltd | Hospitality | 2025 |
| LPT Catering Limited | Hospitality | 2025 |
| LR Ventures Ltd | Wholesale & retail | 2025 |
| LRA Water Solutions Limited | Professional & scientific | 2023 |
| LRG Lines Limited | Construction | 2026 |
| LRK TM Ltd | Public administration | 2024 |
| LRS Ceramic Tiling Limited | Construction | 2008 |
| LS Deux Property Holdings Limited | Real estate | 2025 |
| LS Doncaster Limited | Hospitality | 2024 |
| LS Environmental Services Ltd | Water & waste | 2025 |
| LS Processing Ltd | Construction | 2024 |
| LS Seating Ltd | Construction | 2026 |
| LS Support Ltd | Administrative & support | 2024 |
| LS Support Solutions Ltd | Construction | 2024 |
| LS TM Limited | Construction | 2024 |
| Lsaeed Ltd | Health & social care | 2019 |
| Lseverlasting PUB Company Ltd | Hospitality | 2026 |
| LSF Farma Ltd | Other services | 2012 |
| LSJ Yorkshire Trading Ltd. | Wholesale & retail | 2024 |
| Lskitchendiner Ltd | Hospitality | 2025 |
| LSM Joinery Limited | Manufacturing | 2025 |
| Lsph Ltd | Administrative & support | 2014 |
| LSR Transport Services Ltd | Transport & logistics | 2025 |
| Lssoftware Ltd | Information & communication | 2024 |
| LSY Bentley Limited | Transport & logistics | 2018 |
| LT (Doncaster) Ltd | Hospitality | 2020 |
| LT Developments Limited | Construction | 2012 |
| Ltah Ltd | Wholesale & retail | 2022 |
| Ltek Recruitment Ltd | Other services | 2020 |
| Ltmc Limited | Arts & recreation | 2026 |
| LU Long Beauty Ltd | Other services | 2023 |
| LU Long Group Ltd | Financial services | 2023 |
| LU Long Properties Ltd | Real estate | 2023 |
| Lubaina Himid Projects Limited | Arts & recreation | 2020 |
| Luca Homes Ltd | Construction | 2006 |
| Luca Motors Ltd | Wholesale & retail | 2026 |
| Lucent Glass Ltd | Construction | 2024 |
| Lucent Holdings Ltd | Financial services | 2024 |
| Lucent Timber Frames Ltd | Construction | 2024 |
| Lucentix Ltd | Professional & scientific | 2025 |
| Lucian Baltatu Ltd | Transport & logistics | 2016 |
| Lucian Mega Transport Limited | Transport & logistics | 2024 |
| Luciano Transport. Ltd | Transport & logistics | 2025 |
| LUCIANO81 Ltd | Transport & logistics | 2019 |
| LUCIANO92 Ltd | Professional & scientific | 2024 |
| Lucies Loop Ltd | Wholesale & retail | 2025 |
| Luciubz Ltd | Transport & logistics | 2024 |
| Luck Logistics Ltd | Transport & logistics | 2017 |
| Lucky Cave Ltd | Arts & recreation | 2024 |
| Lucky Dream Studios Ltd | Wholesale & retail | 2024 |
| Lucky New Dragon House Ltd | Hospitality | 2025 |
| Lucsmia Ltd | Transport & logistics | 2019 |
| Lucy Edlington Limited | Wholesale & retail | 2025 |
| Lucy Wood Limited | Administrative & support | 2013 |
| Ludex Fabrications & Welding Services Ltd | Manufacturing | 2022 |
| Ludex Powder Coating Ltd | Manufacturing | 2023 |
| Ludex Shot Blasting Ltd | Other services | 2022 |
| Ludian Limited | Information & communication | 2018 |
| Luelle Properties Ltd | Real estate | 2020 |
| Luffield Holiday Lets Ltd | Hospitality | 2022 |
| Luga Investments Limited | Real estate | 2025 |
| Lugano Consultancy Limited | Professional & scientific | 2024 |
| Lugton Properties Ltd | Real estate | 2026 |
| Luissao Ltd | Transport & logistics | 2025 |
| Lujo Distilling Company Limited | Manufacturing | 2018 |
| Lukas Carpets Ltd | Wholesale & retail | 2022 |
| Lukas Electric Ltd | Construction | 2019 |
| Luke Arnold Construction Limited | Construction | 2012 |
| Luke Arnold Homes Limited | Construction | 2025 |
| Luke Holdings Limited | Real estate | 2017 |
| Luke Klox Ltd | Transport & logistics | 2018 |
| Luke Moore Transport Ltd | Transport & logistics | 2020 |
| Luke Newton Engineering Ltd | Manufacturing | 2019 |
| Lukey Properties Ltd | Real estate | 2025 |
| Luki Trans Ltd | Transport & logistics | 2014 |
| Lukluca Ltd | Transport & logistics | 2023 |
| Lukur Ltd | Administrative & support | 2024 |
| Luma Caravans Ltd | Wholesale & retail | 2018 |
| Luma Properties Limited | Real estate | 2024 |
| Lumag Ltd | Wholesale & retail | 2011 |
| Lumenrise House Limited | Health & social care | 2025 |
| Lumenx Studios Ltd | Information & communication | 2024 |
| Lumexa Solutions Ltd | Extraterritorial | 2026 |
| Lumi Carpenter Ltd | Construction | 2023 |
| Lumi Finance Limited | Financial services | 2024 |
| Lumi Support Limited | Hospitality | 2020 |
| Lumia Property Services Ltd | Construction | 2022 |
| Lumidales Ltd | Wholesale & retail | 2023 |
| Lumily LED Ltd | Manufacturing | 2026 |
| Luminosity Estates Limited | Real estate | 2026 |
| Luminosity Holdings Limited | Financial services | 2026 |
| Luminous Synergy Properties Limited | Real estate | 2025 |
| Lumisonic Limited | Health & social care | 2026 |
| Lumisoph Ltd. | Professional & scientific | 2026 |
| Lumivault Technologies Ltd | Extraterritorial | 2026 |
| Lumora Innovations Ltd | Extraterritorial | 2026 |
| Lumovate Cooks Ltd | Hospitality | 2024 |
| Luna Beauty and Care Services Ltd | Wholesale & retail | 2020 |