| Lakeside Distribution Leicester Limited | Wholesale & retail | 2015 |
| Lakeside Fashion Ltd | Construction | 2019 |
| Lakeside Group Holdings Limited | Financial services | 2023 |
| Lakhan Haulage Ltd | Transport & logistics | 2021 |
| Lakhani Consultancy Limited | Information & communication | 2024 |
| Lakhani Limited | Professional & scientific | 2015 |
| Lakhanico Ltd | Extraterritorial | 2014 |
| Lakshmi Group Limited | Wholesale & retail | 2025 |
| Lakshmi Limited | Hospitality | 2002 |
| Lakshmi Maya Ltd | Real estate | 2020 |
| Lakshya Ltd | Real estate | 2021 |
| LAL Imaging Limited | Health & social care | 2019 |
| LAL Medical Legal Services Limited | Professional & scientific | 2014 |
| Lalli Property Services Ltd | Construction | 2018 |
| Lalo Builders Ltd | Construction | 2025 |
| LAM Builders Ltd | Real estate | 2025 |
| LAM Distro Ltd | Wholesale & retail | 2022 |
| Lamba Industries Ltd | Wholesale & retail | 2021 |
| Lambat Consultancy Limited | Information & communication | 2017 |
| Lambay Ltd | Wholesale & retail | 2007 |
| Lamberhurst Logistics Ltd | Transport & logistics | 2014 |
| Lambert House Consultancy Limited | Health & social care | 2013 |
| Lambert Mechanical Services Limited | Manufacturing | 2012 |
| Lambert Welbeck Ltd | Wholesale & retail | 2025 |
| Lambeth Plumbing Ltd | Construction | 2020 |
| Lambkin Close (Quorn) Management Company Ltd | Households | 2010 |
| Lambley Day Nursery Limited | Education | 2007 |
| Lambo Investments Limited | Financial services | 2019 |
| Lamiya's Mahmud Limited | Transport & logistics | 2025 |
| Lamlilass Ltd | Health & social care | 2026 |
| Lamont Road (HS) Limited | Real estate | 2020 |
| Lampros & Green Ltd | Water & waste | 2021 |
| LAN Limited | Professional & scientific | 1995 |
| LAN TIN 2019 Ltd | Hospitality | 2019 |
| Lancashire Burials Limited | Real estate | 2014 |
| Lancashire Hospitality & Recruitment Limited | Administrative & support | 2018 |
| Lanceman Ltd | Manufacturing | 2016 |
| Lancing Commercial Ltd | Manufacturing | 1999 |
| Lancing Tax Free Ltd | Professional & scientific | 2025 |
| Land Instruments International Limited | Manufacturing | 1982 |
| Landbest Limited | Professional & scientific | 2024 |
| Landcroft Properties Limited | Real estate | 1999 |
| Lander Living Limited | Real estate | 2017 |
| Landfordwood Haulage Ltd | Transport & logistics | 2014 |
| Landlord and Tenant Services (Leicester) Ltd | Administrative & support | 2022 |
| Landlord Building Solutions Ltd | Construction | 2023 |
| Landlord's Multi-Tool Ltd | Construction | 2022 |
| Landmark Construction Group London Ltd | Construction | 2024 |
| Landmark Global Logistics Ltd | Transport & logistics | 2026 |
| Landmark Logistics Ltd | Transport & logistics | 2025 |
| Landmark Property Projects Limited | Construction | 2016 |
| Landmark Surveys (Wales) Limited | Extraterritorial | 2003 |
| Landready Property Management Limited | Households | 1993 |
| Landscape Supplies Limited | Wholesale & retail | 1995 |
| Landuz Health Consultancy Limited | Extraterritorial | 2018 |
| Landworks Limited | Administrative & support | 2009 |
| Landywoods Limited | Wholesale & retail | 2018 |
| Lane Farm Holdings Limited | Real estate | 2023 |
| Lanesborough Leasing Limited | Administrative & support | 1976 |
| Lanesfield Transport Ltd | Transport & logistics | 2014 |
| Lanesport Limited | Extraterritorial | 1998 |
| Lanesport Promotions Limited | Extraterritorial | 1998 |
| LANGA009 Ltd | Health & social care | 2024 |
| Langan Advisory Limited | Professional & scientific | 2021 |
| Langdale Grange Ltd | Households | 2020 |
| Langdale Heights Limited | Health & social care | 2013 |
| Langdale House Limited | Health & social care | 2013 |
| Langdale Lodge Limited | Health & social care | 2013 |
| Langdale View Limited | Health & social care | 2013 |
| Langelihle Luna Agency Care Ltd | Health & social care | 2025 |
| Langford & Whitby Holdings Ltd | Real estate | 2025 |
| Langford Park Ltd | Health & social care | 2009 |
| Langley Corporate Services Limited | Professional & scientific | 2010 |
| Langley Sales Ltd | Wholesale & retail | 2025 |
| Langsett Duty Ltd | Wholesale & retail | 2014 |
| Langsmead Place Management Company Limited | Households | 2025 |
| Langtank Rise Ltd | Wholesale & retail | 2025 |
| Langton Evans and Walker Ltd | Construction | 2005 |
| Langton Housing Limited | Real estate | 2017 |
| Langton Investments Limited | Financial services | 2019 |
| Langton Property Ltd | Construction | 2024 |
| Langtonlets Limited | Real estate | 2024 |
| Lanwillan (Leicester) Limited | Real estate | 2024 |
| Lanwillan Limited | Real estate | 2024 |
| Lanyard Events Limited | Administrative & support | 2014 |
| Lanza Holdings Ltd | Administrative & support | 2020 |
| LAP Direct Ltd | Real estate | 2020 |
| Laptop Clinic Ltd | Wholesale & retail | 2022 |
| Lapworth Technologies Limited | Information & communication | 2018 |
| Lapworths Limited | Transport & logistics | 2015 |
| Laquila Group Ltd. | Hospitality | 2023 |
| LAR Media Limited | Professional & scientific | 2026 |
| Lara Lloyd Coaching Ltd | Other services | 2025 |
| Laral Dewinter Group Ltd | Financial services | 2017 |
| Larchwood Holdings Limited | Other services | 2000 |
| Laroc Consulting - HR Limited | Administrative & support | 2025 |
| LAS Leicester Ltd | Education | 2023 |
| LAS Vegas Fish Bar Limited | Hospitality | 2026 |
| Laser a Skin Clinic Limited | Other services | 2024 |
| Laser and Grinding Ltd | Manufacturing | 2024 |