| LANE7 N Ltd | Arts & recreation | 2024 |
| LANE7 O Ltd | Arts & recreation | 2024 |
| LANE7 P Ltd | Arts & recreation | 2024 |
| LANE7 Properties Ltd | Arts & recreation | 2019 |
| LANE7 Q Ltd | Arts & recreation | 2024 |
| LANE7 R Ltd | Arts & recreation | 2025 |
| LANE7 S Ltd | Arts & recreation | 2025 |
| LANE7 Sheffield Ltd | Arts & recreation | 2017 |
| LANE7 T Ltd | Arts & recreation | 2025 |
| LANE7 U Ltd | Arts & recreation | 2025 |
| LANE7 V Ltd | Arts & recreation | 2025 |
| LANE7 W Ltd | Arts & recreation | 2025 |
| LANE7 X Ltd | Arts & recreation | 2025 |
| LANE7 Y Ltd | Arts & recreation | 2025 |
| LANE7 Z Ltd | Arts & recreation | 2025 |
| Langham Mill Property Limited | Real estate | 2026 |
| Langstaff-Ellis Limited | Manufacturing | 2009 |
| Langton Farm Properties Limited | Real estate | 2026 |
| Lanof (UK) Ltd | Professional & scientific | 2008 |
| Lara Trans Ltd | Transport & logistics | 2024 |
| Laroma Ltd | Hospitality | 2023 |
| LAROMA1 Ltd | Hospitality | 2025 |
| Laser Cleaning Solutions Ltd | Administrative & support | 2023 |
| Laser Quest (MK) Limited | Arts & recreation | 2023 |
| Laser Quest Hatfield Limited | Arts & recreation | 2024 |
| Last Viking Wales Ltd | Agriculture & fishing | 2019 |
| Later Life Money Limited | Financial services | 2019 |
| Latimer Hinks Holdings Limited | Financial services | 2019 |
| Latimer Hinks Solicitors Limited | Professional & scientific | 2014 |
| Launch Enterprise Ltd | Wholesale & retail | 2024 |
| Lauren Mcavoy Case Management Limited | Health & social care | 2026 |
| Laurus Management Services Limited | Administrative & support | 2006 |
| Lavas Barber Ltd | Other services | 2019 |
| Lavco Creatives Limited | Information & communication | 2025 |
| Lavelec Electrical Services Ltd | Construction | 2021 |
| Lavenpark Limited | Professional & scientific | 2019 |
| Lawson Commercial Consultancy Ltd | Construction | 2024 |
| Lawson Tyre & Autocare Ltd | Wholesale & retail | 2025 |
| Layes Foods UK Limited | Hospitality | 2025 |
| Laytrix Limited | Professional & scientific | 2017 |
| LB Joinery Ltd | Construction | 2025 |
| LB Joinery Services Ltd | Construction | 2025 |
| LBS (North East) Ltd | Professional & scientific | 2010 |
| LC13 Groundworks Ltd | Construction | 2022 |
| Lccs Trade Cars Ltd | Wholesale & retail | 2023 |
| LCS Supplies Ltd | Wholesale & retail | 2021 |
| LCT Management Services Limited | Wholesale & retail | 2012 |
| LCT Property Ltd | Real estate | 2020 |
| LDF Healthcare Limited | Health & social care | 2012 |
| LE ROY Estates Limited | Construction | 2003 |
| LEA Cleaning Services Ltd | Administrative & support | 2025 |
| Leada Auto Parts Ltd | Wholesale & retail | 2019 |
| Leada Online Ltd | Wholesale & retail | 2024 |
| Leada RS Parts Ltd | Wholesale & retail | 2024 |
| Leading Edge Electrical Contractors Ltd | Construction | 2022 |
| Leadstar Properties Ltd | Real estate | 2016 |
| Leakage Surveys Ltd | Construction | 2017 |
| Leanna Ltd | Financial services | 2013 |
| Learoydd Limited | Wholesale & retail | 2025 |
| Lears Residence Management Company Limited | Real estate | 2020 |
| Leasidefour Limited | Real estate | 2015 |
| Lebanese & Moroccan Cuisine Ltd | Hospitality | 2015 |
| LEC Management | Professional & scientific | 1998 |
| Leconfield Limited | Extraterritorial | 2012 |
| LEE Bates Flooring Limited | Wholesale & retail | 2011 |
| LEE Darvill Limited | Professional & scientific | 2008 |
| LEE Weir Fabrications Limited | Professional & scientific | 2019 |
| LEE Wilson PD Ltd | Transport & logistics | 2025 |
| Leggs Limited | Wholesale & retail | 2003 |
| Leicester Autos Ltd | Wholesale & retail | 2010 |
| Leisurely Place Ltd | Information & communication | 2025 |
| Lelly UK Limited | Health & social care | 2014 |
| Lemonaide Ltd | Health & social care | 2024 |
| Lenix Limited | Other services | 2020 |
| LENNONSTOREY1 Ltd | Transport & logistics | 2026 |
| LEO Court Consulting (INT) Ltd | Administrative & support | 2017 |
| LEO Court Consulting Limited | Professional & scientific | 2016 |
| Leon's Victoria DRY Cleaners Ltd | Other services | 2017 |
| LES Blackall Deliveries Ltd | Transport & logistics | 2026 |
| Lesley Charles Ltd | Other services | 2019 |
| Lesley Milbourne Consultancy Limited | Administrative & support | 2005 |
| Leslie Brown Contracting Services Ltd | Agriculture & fishing | 2012 |
| Lester Labs Ltd | Information & communication | 2026 |
| Level Three Inspection Ltd | Construction | 2012 |
| Leven Court Management Company Limited | Households | 1993 |
| Leverage Clothing Ltd | Wholesale & retail | 2023 |
| Levy Developments Ltd | Construction | 2012 |
| Lewandowski Transport Limited | Transport & logistics | 2014 |
| Lewis Edmunds Racing Limited | Arts & recreation | 2025 |
| Lewis Surveying Associates (Yorkshire) Ltd | Professional & scientific | 2015 |
| Leysom Limited | Hospitality | 2019 |
| Lgst Property Management Ltd | Real estate | 2021 |
| LH Consultancy & Communications Limited | Professional & scientific | 2022 |
| LHK Group Ltd | Real estate | 2024 |
| LIA Barbers Ltd | Other services | 2025 |
| Liam the DEV Ltd | Information & communication | 2023 |
| Libbie MAI Studios Ltd | Other services | 2021 |
| Libby Smith Farrier Ltd | Arts & recreation | 2025 |
| Liberty Games Ltd | Wholesale & retail | 2026 |
| LIE Detector Direct Ltd | Administrative & support | 2019 |