| L.H. Transport Logistics Ltd | Transport & logistics | 2025 |
| L.J. Rail and Consultancy Limited | Professional & scientific | 2018 |
| L.J.J Properties Limited | Administrative & support | 2006 |
| L.M.W UK Properties Ltd | Construction | 2024 |
| L.S. Direct Ltd | Construction | 1995 |
| LA 355 Ltd | Hospitality | 2026 |
| LA Deane Property Limited | Real estate | 2023 |
| LA Dente Dolce Limited | Hospitality | 2018 |
| LA Energy Solutions Ltd | Construction | 2023 |
| LA Lanterna Ltd | Hospitality | 2021 |
| LA Live Ltd | Hospitality | 2015 |
| LA Mediterranean Ltd | Hospitality | 2025 |
| LA Movements Ltd | Transport & logistics | 2025 |
| LA Musica Ltd | Information & communication | 2023 |
| LA Nguethienne Ltd | Other services | 2018 |
| LA Nonna Limited | Wholesale & retail | 2025 |
| LA Parfumerie Anglaise Limited | Manufacturing | 2016 |
| LA Pizza Ltd | Hospitality | 2026 |
| LA Properties MCR Ltd | Real estate | 2023 |
| LA Puerta Roja Ltd | Hospitality | 2024 |
| LA Ritzy Ltd | Wholesale & retail | 2020 |
| LA Testing Services Limited | Information & communication | 2023 |
| LA Vita Coffe Ltd | Wholesale & retail | 2023 |
| LA Vita Italian Takeaway Limited | Hospitality | 2025 |
| La.Vi Oils and Essentials Ltd | Other services | 2014 |
| LA1 Estates Ltd | Real estate | 2020 |
| LAA Pharma Consulting Limited | Professional & scientific | 2020 |
| Laakam Service Limited | Health & social care | 2020 |
| LAB Aesthetcs Ltd | Other services | 2023 |
| Labelwonderland Ltd | Wholesale & retail | 2016 |
| Labeth Ltd | Construction | 2025 |
| Labmallgroup.Co.Uk Ltd | Wholesale & retail | 2026 |
| Labodent Limited | Professional & scientific | 2016 |
| Laborantem Consultancy Limited | Health & social care | 2013 |
| Labore Ltd | Manufacturing | 2018 |
| Labour 24/7 (Holdings) Limited | Extraterritorial | 2016 |
| Labour 24/7 Limited | Administrative & support | 2009 |
| Labour Hire Solutions Ltd | Administrative & support | 2019 |
| Labour: Women in Tech Ltd | Other services | 2023 |
| Labway Services Ltd | Professional & scientific | 2014 |
| Labyrinth Finance Ltd | Professional & scientific | 2025 |
| Lace G Limited | Wholesale & retail | 2014 |
| Laceys Gearboxes Ltd | Other services | 2025 |
| Lacky Ltd | Hospitality | 2025 |
| LAD Automotive Limited | Wholesale & retail | 2008 |
| Ladworks Ltd | Construction | 2026 |
| Lady's Little Paws Ltd | Other services | 2024 |
| Ladybirdfari Limited | Real estate | 2021 |
| Ladybridge Healthcare Limited | Wholesale & retail | 2026 |
| Ladybridge Lane Management Company Limited | Households | 2004 |
| Ladybridge Sports and Leisure Limited | Arts & recreation | 1998 |
| Ladyshore Grange Ltd | Agriculture & fishing | 2023 |
| Ladywell Court Limited | Construction | 1990 |
| Lagrange Point Ltd | Wholesale & retail | 2022 |
| Laguna House Limited | Administrative & support | 2020 |
| Laha Medical Limited | Health & social care | 2011 |
| Laheri Ltd | Health & social care | 2012 |
| Lahore Motors Limited | Wholesale & retail | 2025 |
| Lahori Culture Limited | Hospitality | 2022 |
| Lahori Darbar BLN Ltd | Hospitality | 2025 |
| Lahori Spices Ltd | Hospitality | 2025 |
| Lahori Taste Grill House Ltd | Hospitality | 2022 |
| LAI Beautiful Ltd | Wholesale & retail | 2023 |
| LAI30 Limited | Transport & logistics | 2026 |
| Laid by Shay Limited | Other services | 2023 |
| Laings Online Limited | Information & communication | 2019 |
| Laiqon Ltd | Wholesale & retail | 2025 |
| Laithco Limited | Administrative & support | 2018 |
| Lake District Investments Ltd | Real estate | 2020 |
| Lakehouse Enterprises Limited | Hospitality | 2015 |
| Lakeland Adventures Ltd | Transport & logistics | 2013 |
| Lakeland Artisan Limited | Manufacturing | 2012 |
| Lakeland Steel Limited | Manufacturing | 2014 |
| Lakeside Northern Limited | Construction | 2006 |
| Lakeside Solicitors Limited | Professional & scientific | 2024 |
| Lakeview Properties Rivington Ltd | Real estate | 2020 |
| Lakhanie Traders Ltd | Wholesale & retail | 2025 |
| Lakhi Locums Limited | Health & social care | 2009 |
| LAL Qila at Home Ltd | Wholesale & retail | 2025 |
| Lalgfashions Limited | Wholesale & retail | 2022 |
| Lallian Pharmacy Limited | Wholesale & retail | 2003 |
| Lalo Shawarma Ltd | Hospitality | 2020 |
| Lalou Ventures Ltd | Real estate | 2024 |
| Lama Tech Limited | Information & communication | 2012 |
| Lamb & Swift EOT Limited | Administrative & support | 2025 |
| Lambda Investments Limited | Real estate | 2022 |
| Lambda Labs Ltd | Information & communication | 2012 |
| Lambda Space Technologies Ltd | Transport & logistics | 2024 |
| Lambhore Ltd | Wholesale & retail | 2025 |
| Lambs(Uk) Civils Limited | Construction | 2017 |
| Laminar Methods Limited | Information & communication | 2025 |
| Lamisa Products Ltd | Wholesale & retail | 2022 |
| Lanahan Risk Management Services Ltd | Professional & scientific | 2022 |
| Lanark Gray Limited | Information & communication | 2026 |
| Lancamore Property Ltd | Real estate | 2024 |
| Lancashire & Cumbria Laundry Services Limited | Other services | 2023 |
| Lancashire & Cumbria Properties & Facilities Management Limited | Real estate | 2020 |
| Lancashire & Cumbria Seed LAB Limited | Administrative & support | 2021 |
| Lancashire and Cumbria Group (Holdings) Limited | Administrative & support | 2017 |
| Lancashire and Cumbria Pubs Limited | Hospitality | 2019 |