| LE Vieux Paintings Ltd | Other services | 2019 |
| LEA Food Ltd | Hospitality | 2024 |
| LEA Recruitment Consultancy Ltd | Administrative & support | 2013 |
| Lead GEN Academy Ltd | Professional & scientific | 2024 |
| Lead Well Organisation Ltd | Professional & scientific | 2023 |
| LEAD42 Ltd | Professional & scientific | 2025 |
| Leadbond Limited | Manufacturing | 1983 |
| Leader Autos Ltd | Wholesale & retail | 2018 |
| Leader Properties Limited | Real estate | 2017 |
| Leader Road Garage Limited | Wholesale & retail | 2004 |
| Leaderflush + Shapland Holdings Limited | Extraterritorial | 1999 |
| Leadervision Ltd. | Professional & scientific | 2008 |
| Leadgates Services Limited | Households | 2020 |
| Leading Beyond Ltd | Professional & scientific | 2025 |
| Leading MEN and Women Global Ministry Ltd | Other services | 2025 |
| Leading Vehicle Transportation Ltd | Transport & logistics | 2022 |
| Leadsco Ltd | Information & communication | 2019 |
| Leaf Design Build Develop Ltd | Construction | 2019 |
| Leaf Quantity Surveying Limited | Professional & scientific | 2011 |
| Leaf Residential Ltd | Real estate | 2025 |
| Leafield JD Limited | Health & social care | 2020 |
| Leafy Suburbs Ltd | Real estate | 2024 |
| Leagrave Springs Health Care Limited | Health & social care | 2025 |
| Leah Stockford Limited | Professional & scientific | 2020 |
| Leahs Yard Ltd | Real estate | 2021 |
| Leal Installations Ltd | Administrative & support | 2017 |
| Leamore Building Services Ltd | Professional & scientific | 2014 |
| Lean Pro E Limited | Manufacturing | 2000 |
| Lean&Grilled Ltd | Hospitality | 2025 |
| Leanne and Family Management Limited | Administrative & support | 2025 |
| Leanne Hurst Fitness Ltd | Education | 2023 |
| Leap Commercial Limited | Real estate | 2016 |
| Leap Design Limited | Administrative & support | 2002 |
| Leapings Cottage Limited | Real estate | 2021 |
| Leaps and Bounds Children's Nursery Ltd | Health & social care | 2024 |
| Lear House Properties Limited | Other services | 2002 |
| Learn for Life Enterprise Limited | Education | 2008 |
| Learn Sheffield | Education | 2015 |
| Learn to Re-Create Limited | Education | 2010 |
| Learners' Trust | Education | 2016 |
| Learning Light Limited | Information & communication | 2005 |
| Learning to Success Limited | Education | 2008 |
| Learning With Hero Limited | Administrative & support | 2025 |
| Learnstuf Limited | Education | 2011 |
| Lechler Limited | Manufacturing | 1972 |
| Ledgard Jepson Limited | Administrative & support | 1989 |
| Ledgestone Ltd | Construction | 2019 |
| LEE & Holmes Ltd | Other services | 2020 |
| LEE and Moore Limited | Hospitality | 2021 |
| LEE Breeds Financial Services Ltd | Professional & scientific | 2023 |
| LEE Electrical Division Ltd | Construction | 2021 |
| LEE Fabrications Ltd | Manufacturing | 2025 |
| LEE House Takeaway Limited | Hospitality | 2020 |
| LEE Lighting Retirement I Limited | Extraterritorial | 2013 |
| LEE Lighting Retirement II Limited | Extraterritorial | 2013 |
| LEE Malia Limited | Arts & recreation | 2013 |
| LEE Owen Golf UK Limited | Arts & recreation | 2003 |
| LEE Scholefield Development Limited | Information & communication | 2025 |
| LEE V A2B Logistics Ltd | Transport & logistics | 2012 |
| LEE Watson Plastering Ltd | Construction | 2017 |
| Leeds Barber Ltd | Wholesale & retail | 2025 |
| Leeds Display Limited | Other services | 2016 |
| Leeds Domo Restaurant Limited | Hospitality | 2025 |
| Leeds Experience Ltd | Arts & recreation | 2021 |
| Leeds Mobile Ltd | Administrative & support | 2026 |
| Leedsheath Limited | Manufacturing | 1978 |
| Leek Technologies Limited | Financial services | 2024 |
| Leemarker Ventures Limited | Hospitality | 2026 |
| Leen Electric Ltd | Construction | 2021 |
| Leen Veloura Ltd | Wholesale & retail | 2026 |
| Lees Lane Limited | Real estate | 2026 |
| Leeswood Kebab LMT Limited | Hospitality | 2025 |
| Leeway Construction & Renovation Limited | Construction | 2014 |
| Leeway Payments Ltd | Wholesale & retail | 2026 |
| Leez Pizza and Kebab Limited | Hospitality | 2025 |
| Lee’S Trees and Garden Services Ltd | Administrative & support | 2024 |
| Left Luggage Creative Ltd | Other services | 2012 |
| Legacy Commercial Finance Limited | Financial services | 2024 |
| Legacy Figures Accountancy Ltd | Professional & scientific | 2025 |
| Legacy Habitat Management Limited | Construction | 2003 |
| Legacy Motorz Limited | Wholesale & retail | 2024 |
| Legacy Park Ltd | Construction | 2015 |
| Legacy Property Management and Developers Limited | Construction | 2026 |
| Legacy Silverware Limited | Manufacturing | 2018 |
| Legacy Training and Assessing Ltd | Education | 2020 |
| Legacyoneentertainment Ltd | Arts & recreation | 2020 |
| Legal & Business Affairs Limited | Professional & scientific | 2009 |
| Legal @ Johnson Walker Ltd | Professional & scientific | 2018 |
| Legal Entity Ltd | Public administration | 2025 |
| Legal Farmer African Foods Ltd | Wholesale & retail | 2025 |
| Legal Justice Solicitors Ltd | Professional & scientific | 2022 |
| Legal Recovery Debt Services Limited | Extraterritorial | 2018 |
| Legard Interiors Limited | Administrative & support | 2015 |
| Legend Barber S25 Ltd | Other services | 2025 |
| Legend Ventures Ltd | Professional & scientific | 2017 |
| Legendary Performance Ltd | Wholesale & retail | 2025 |
| Legends Bar (Mansfield) Limited | Arts & recreation | 2022 |
| Legends Barber 1 Limited | Other services | 2024 |
| Legends Promotions Limited | Wholesale & retail | 2012 |
| Leger Building Limited | Construction | 2022 |