| L.Lyubenov Ltd | Transport & logistics | 2022 |
| L.Macys Ltd | Transport & logistics | 2018 |
| L.U.V Property Ltd | Real estate | 2019 |
| LA Bella Figura Ltd | Hospitality | 2019 |
| LA Cocina Lincoln Ltd | Hospitality | 2025 |
| LA HCW Ltd | Other services | 2025 |
| LA Lota Limited | Other services | 2020 |
| LA Maison Créatives Ltd | Manufacturing | 2021 |
| LA Perla Blanca Ltd | Health & social care | 2021 |
| LA Union Limited | Administrative & support | 2003 |
| LA Vina Limited | Hospitality | 2008 |
| Laasya Medics Limited | Health & social care | 2016 |
| Labfish Clinical Trial Solutions Limited | Administrative & support | 2024 |
| Labouria Ltd | Wholesale & retail | 2026 |
| Lachowski Trans Ltd | Transport & logistics | 2016 |
| LAD Alonso Ltd | Transport & logistics | 2019 |
| Ladara Group Limited | Wholesale & retail | 2025 |
| Lady Lodge Holdings Limited | Financial services | 2024 |
| Lady Lodge Properties Limited | Real estate | 2022 |
| Lady Lodge Systems Limited | Information & communication | 1988 |
| Ladybird IT Solutions Ltd | Information & communication | 2021 |
| Ladyseat Farms Limited | Administrative & support | 2008 |
| LAF Express Ltd | Transport & logistics | 2019 |
| Lagoon Events Ltd | Arts & recreation | 2024 |
| Lagos Kitchen Limited | Hospitality | 2023 |
| Lahore Investments Ltd | Real estate | 2023 |
| Lahore Tandoori Ltd. | Hospitality | 2018 |
| Lahori Cafe Ltd | Hospitality | 2025 |
| Laimis Trans Ltd | Transport & logistics | 2019 |
| Laird Property Management Ltd. | Real estate | 2016 |
| Laithwaite Estates Ltd | Real estate | 2023 |
| Laj’S Cleaning Services Ltd | Administrative & support | 2022 |
| Lake's World Limited | Wholesale & retail | 2026 |
| Lakemere Leisure Homes Limited | Manufacturing | 2022 |
| Lakeside Bar & Restaurant Ltd | Hospitality | 2017 |
| Lakeside Bar & Restaurant Tallington Ltd | Hospitality | 2025 |
| Lakeside Gardens Coates Management Company Limited | Real estate | 2014 |
| Lakeside Water and Building Services Limited | Manufacturing | 1998 |
| Lakeview Enterprises LLP | | 2011 |
| Lakeview House Limited | Transport & logistics | 2014 |
| Lala Jewellers Limited | Wholesale & retail | 2021 |
| Lala Transport Ltd | Transport & logistics | 2024 |
| Lalain's Ltd | Wholesale & retail | 2024 |
| LAM Automation Limited | Manufacturing | 2020 |
| Lamain Limited | Real estate | 2026 |
| Lamb Creative Limited | Professional & scientific | 2014 |
| Lambaux Enterprises Ltd | Professional & scientific | 2010 |
| Lambert and Gilka Limited | Construction | 2025 |
| Lambert Harrison Homes Ltd | Construction | 2024 |
| Lambourn Escapes Limited | Administrative & support | 2025 |
| Lami Services Ltd | Manufacturing | 2018 |
| Lamina Holdings Limited | Health & social care | 2019 |
| Lanarca Holdings Limited | Financial services | 2025 |
| Lanarca Landscape Limited | Administrative & support | 2025 |
| Lanarca Limited | Administrative & support | 2003 |
| Lancaster Square Residents Company Limited | Households | 1998 |
| Land & Cruise Holidays Ltd | Administrative & support | 2024 |
| Land Art Agency C.I.C. | Professional & scientific | 2020 |
| Land Folio Limited | Financial services | 2024 |
| Landie & Co Ltd | Real estate | 2023 |
| Landing Range Ltd | Transport & logistics | 2026 |
| Landlong Property Management Limited | Real estate | 1997 |
| Landlord Furniture Solutions Ltd | Wholesale & retail | 2021 |
| Landmark Invest Limited | Real estate | 2019 |
| Landmark Meadows Limited | Real estate | 2023 |
| Landmark Productions Ltd | Arts & recreation | 2019 |
| Landmark Seven Ltd | Construction | 2026 |
| Landmark Venues Development Ltd | Real estate | 2019 |
| Landplan Contracting Limited | Administrative & support | 2006 |
| Landship Games Ltd | Information & communication | 2025 |
| Landtech Limited | Water & waste | 2004 |
| Lane Property Developments Ltd | Construction | 2023 |
| Lane Property Group Limited | Real estate | 2021 |
| Lanex Holdings Ltd | Information & communication | 2026 |
| Langa Care Services Limited | Health & social care | 2013 |
| Langbrooke Ltd | Construction | 2025 |
| Langford Strategy Group Ltd | Professional & scientific | 2026 |
| Langtoft Convenience Store Ltd | Wholesale & retail | 2020 |
| Lanner Group Limited | Information & communication | 1995 |
| Lanten Ltd | Information & communication | 2025 |
| Lantos Foods Limited | Wholesale & retail | 2020 |
| Lanu Recruitment Ltd | Administrative & support | 2025 |
| LAO Inc Limited | Public administration | 2018 |
| LAP London Ltd | Wholesale & retail | 2023 |
| Lapen Inns - POW Ltd | Hospitality | 2023 |
| Lapen Inns -OSH Limited | Hospitality | 2025 |
| Lapen Inns- Barley MOW Ltd | Hospitality | 2024 |
| Lapen Inns- the Barley MOW Ltd | Hospitality | 2024 |
| Lapsius Ltd | Transport & logistics | 2026 |
| Laraheroko Ltd | Health & social care | 2025 |
| Laravel Solutions Ltd | Information & communication | 2024 |
| Larkfleet (Doddington) Limited | Construction | 2011 |
| Larkfleet Midco Limited | Extraterritorial | 2017 |
| Larkfleet Properties Limited | Real estate | 2008 |
| Larkfleet Rise Management Company Limited | Households | 2017 |
| Larkhall Enterprise Ltd | Hospitality | 2016 |
| Larkspur Practice Limited | Health & social care | 2011 |
| Larrington & Co Ltd | Professional & scientific | 2024 |
| Larry Consultancy Limited | Education | 2026 |
| Larryb International Limited | Construction | 2019 |