| LAJ Catering Ltd | Hospitality | 2025 |
| LAK Fitness Ltd | Arts & recreation | 2016 |
| Lake & Croft Homes Ltd | Real estate | 2021 |
| Lake House Ltd | Real estate | 2022 |
| Lakeside Financial Solutions Ltd | Professional & scientific | 2015 |
| Lakin Consultancy Limited | Information & communication | 2020 |
| Lakshmi Capital Ventures Limited | Real estate | 2024 |
| Lakshmi Stores and Traders Limited | Wholesale & retail | 2018 |
| Lakshmi Wholesale Limited | Wholesale & retail | 2025 |
| Lala Barbers INT Ltd | Other services | 2025 |
| Lalis Derby Ltd | Hospitality | 2025 |
| LAM Property Ltd | Real estate | 2023 |
| LAM Services Limited | Administrative & support | 2008 |
| LAM UK Holdings Ltd | Financial services | 2023 |
| Lamb Stafford Ltd | Hospitality | 2025 |
| Lambent Consulting Ltd | Information & communication | 2017 |
| Lambert Manor Group Limited | Real estate | 2025 |
| Lambort Limited | Real estate | 1982 |
| Lambton Park (R10) Block Management Company Limited | Households | 2019 |
| Lambton Park (R10) Development Management Company Limited | Households | 2019 |
| Lambton Park (R9) Development Management Company Limited | Households | 2022 |
| Laminvale Limited | Administrative & support | 2000 |
| Lamis Skin Ltd | Wholesale & retail | 2026 |
| Lammond Associates Ltd | Administrative & support | 2020 |
| Lana Sylvia Hoolahan Ltd | Extraterritorial | 2023 |
| Lana Sylvia Hoolahan-Slater Ltd | Extraterritorial | 2023 |
| Lancaster Estates Management Services Limited | Real estate | 2003 |
| Lancelot Jewels Ltd | Manufacturing | 2012 |
| Land & Associates Limited | Professional & scientific | 2013 |
| Land of Lights Limited | Extraterritorial | 2025 |
| Landasko Property Services Limited | Health & social care | 1998 |
| Landau Forte Charitable Trust | Education | 1989 |
| Landau Forte Enterprises Qems Limited | Real estate | 2011 |
| Landau Forte Enterprises Sixth Form Tamworth Limited | Real estate | 2011 |
| Landau Forte Enterprises Tamworth Limited | Arts & recreation | 2010 |
| Lane 1 Coaching Limited | Arts & recreation | 2007 |
| Lane 1 Sports Management Limited | Arts & recreation | 2016 |
| Lane 1 Waterbugs Limited | Arts & recreation | 2016 |
| Lanel & Co Ltd | Administrative & support | 2019 |
| Lanes Courier Services Ltd | Transport & logistics | 2025 |
| LANG247 Certified Translation Service UK Limited | Professional & scientific | 2020 |
| Langdale Transport Ltd | Transport & logistics | 2022 |
| Langford Mills Residential Estate Management Company Limited | Households | 2018 |
| Langham Park Temple Normanton Management Company Limited | Real estate | 2007 |
| Langham Products Limited | Extraterritorial | 1999 |
| Langlea Ltd | Administrative & support | 2013 |
| Langley Chase Management Company Limited | Households | 2025 |
| Langley Coatings Limited | Manufacturing | 2009 |
| Langley Dog Park Limited | Arts & recreation | 2023 |
| Langley Gate (York) Estate Management Company Limited | Households | 2021 |
| Langley Gates & Railings Limited | Manufacturing | 2009 |
| Langley House Investments Limited | Real estate | 2015 |
| Langley Meadows Glamping Limited | Construction | 2012 |
| Langley Meadows Limited | Hospitality | 2024 |
| Langs Holdings Limited | Financial services | 2024 |
| Langton Property Group Limited | Real estate | 2022 |
| Languages Hub Ltd | Professional & scientific | 2023 |
| Lanrk Ltd | Wholesale & retail | 2026 |
| Lanry Property Limited | Real estate | 2024 |
| Lansford Capital Limited | Real estate | 2025 |
| Lansia Limited | Hospitality | 2021 |
| Lapsi Spice Limited | Manufacturing | 2022 |
| LAR LAR Land Limited | Other services | 2015 |
| Larch Farm (Ravenshead) Limited | Hospitality | 2008 |
| Larges Street Derby Office Management Limited | Real estate | 1988 |
| Lark Allegro Ltd | Information & communication | 2014 |
| Lark Real Estate Limited | Real estate | 2024 |
| Larsar Ltd | Real estate | 2023 |
| LAS Project Management Ltd | Construction | 2021 |
| Lasani Green Travel Agency Limited | Administrative & support | 2003 |
| Lasani Indo Persian Limited | Hospitality | 2026 |
| Lasani Logistics Limited | Administrative & support | 2010 |
| Lasani Southwell Limited | Hospitality | 2023 |
| Lashes of LND Ltd | Other services | 2019 |
| Lass Media Ltd | Information & communication | 2020 |
| Lasting Elegance Ltd | Wholesale & retail | 2025 |
| Lateral Studio Ltd | Professional & scientific | 2020 |
| Lathams Trustees Limited | Administrative & support | 2022 |
| Lattuca Developments Ltd | Construction | 2021 |
| Laudan Properties Ltd | Real estate | 2004 |
| Lauden Healthcare Ltd | Health & social care | 2026 |
| Lauhka Logistics Private Ltd | Transport & logistics | 2018 |
| Laura Elizabeth (UK) Limited | Manufacturing | 2015 |
| Laurels Park Property Company Limited | Real estate | 2025 |
| LAURELS4A Limited | Professional & scientific | 2022 |
| Lauren Dorling Ltd | Households | 2016 |
| Lauren Emma at Studio 53 Ltd | Other services | 2018 |
| Lauren Heard Hair Ltd | Other services | 2018 |
| Laurence Newman Limited | Administrative & support | 2007 |
| Laurix Ltd | Other services | 2022 |
| Lava Capital Limited | Professional & scientific | 2024 |
| Lavano UK Ltd | Wholesale & retail | 2020 |
| Lavender (Eco) Ltd | Agriculture & fishing | 2026 |
| Lavender Care Solutions Ltd | Administrative & support | 2017 |
| Lavender Hill Care Ltd | Health & social care | 2026 |
| Lavender Lodge Limited | Health & social care | 2004 |
| Lavie Capital Limited | Financial services | 2026 |
| Lawani Transport Company 1010 Ltd | Transport & logistics | 2025 |
| Lawbanx Limited | Financial services | 2022 |
| Lawcox Consulting Ltd | Information & communication | 2023 |