| L&J CRL Transport Ltd | Transport & logistics | 2024 |
| L&J Partners Ltd | Professional & scientific | 2017 |
| L&L Lucky Draws Ltd | Arts & recreation | 2025 |
| L&L Painting & Decorating Ltd | Construction | 2019 |
| L&M Interconnect Ltd | Manufacturing | 2021 |
| L&N Mason Enterprises Ltd | Financial services | 2021 |
| L&N Piled Foundations Limited | Construction | 2019 |
| L&R Thompson Rail Ltd | Construction | 2019 |
| L&S Clivils Ltd Ltd | Construction | 2025 |
| L&V (Star) Company Limited | Hospitality | 2025 |
| L. Lanni Limited | Extraterritorial | 1976 |
| L. Oldroyd Plumbing & Heating Limited | Construction | 2024 |
| L.A Cosmetics Ltd | Other services | 2023 |
| L.C.M Civils & Utilities Limited | Construction | 2025 |
| L.C.M Plant Limited | Administrative & support | 2025 |
| L.C.P Engineering Ltd | Professional & scientific | 2025 |
| L.E Enterprises Limited | Construction | 2023 |
| L.F.Hire Limited | Wholesale & retail | 2020 |
| L.Harvey Properties Ltd | Real estate | 2022 |
| L.R. Brown Limited | Construction | 2003 |
| L.V.C. Contractors Limited | Construction | 2022 |
| L.W.E. Ltd. | Professional & scientific | 2003 |
| LA 2 Cocosi Doncaster Ltd | Hospitality | 2025 |
| LA Barraca Plya Ltd | Hospitality | 2017 |
| LA Boca Manchester Ltd | Hospitality | 2025 |
| LA Boutique Trading and Distribution Ltd | Extraterritorial | 2026 |
| LA Denis Ltd | Wholesale & retail | 2025 |
| LA Fiesta Armthorpe Ltd | Hospitality | 2015 |
| LA Fiesta Limited | Hospitality | 2025 |
| LA Folie Inc Ltd | Real estate | 2025 |
| LA Mesa Ltd | Hospitality | 2018 |
| LA Mocha Cafe & Bar Ltd | Hospitality | 2026 |
| LA Property Holdings Limited | Extraterritorial | 2018 |
| LA Ruche Limited | Wholesale & retail | 2021 |
| LA Rustica Doncaster Ltd | Hospitality | 2019 |
| LA Rustica Italian Doncaster Ltd | Hospitality | 2025 |
| LA Seta Rosa Limited | Health & social care | 2022 |
| LA Sharpe Electronics Limited | Wholesale & retail | 2022 |
| LA Tiling Limited | Construction | 2013 |
| LA Velvetta Ltd | Hospitality | 2026 |
| LA VIE & LA Vida Ltd. | Professional & scientific | 1996 |
| LA Vietnamese Restaurant & Bar Ltd | Hospitality | 2025 |
| LA Vivara Legacy Ltd | Other services | 2025 |
| LAA Electricals Limited | Manufacturing | 2014 |
| LAA Hamiti Properties Ltd | Real estate | 2025 |
| LAB Accounting and Consultancy Ltd | Professional & scientific | 2015 |
| Labanco Cafe and Bar Limited | Hospitality | 2024 |
| Labiray Ltd | Health & social care | 2021 |
| Labrook Consultancy Ltd | Professional & scientific | 2025 |
| Labunica AL Ltd | Hospitality | 2019 |
| LAC Detailing Ltd | Administrative & support | 2026 |
| LAC Developments Limited | Real estate | 1999 |
| LAC Shopfit Limited | Construction | 2015 |
| Lachoi Restaurant Limited | Hospitality | 2023 |
| Lady Accessories Ltd | Wholesale & retail | 2020 |
| Ladyville Lodge Care Limited | Health & social care | 2018 |
| LAF Support Ltd | Health & social care | 2024 |
| Lafayette Group Ltd | Financial services | 2026 |
| LAG TM Ltd | Public administration | 2024 |
| Lagm Ltd | Wholesale & retail | 2022 |
| Laguna Limited | Arts & recreation | 2015 |
| Lahovary Services Ltd | Administrative & support | 2025 |
| Laing Decorators Ltd | Construction | 2024 |
| Lake TEN Management Company Ltd | Households | 2005 |
| Lake Victoria Logistics Ltd | Wholesale & retail | 2024 |
| Lakeside 1 Limited | Professional & scientific | 2007 |
| Lakeside Doncaster Limited | Construction | 2022 |
| Lakeside Furniture Direct Ltd | Wholesale & retail | 2022 |
| Lakeside Oriental Cuisine Ltd | Hospitality | 2023 |
| Lakeside WOK Ltd | Hospitality | 2026 |
| Lala Arts CIC | Arts & recreation | 2024 |
| Lalh Limited | Professional & scientific | 2025 |
| Lambcote Grange Farm Ltd | Wholesale & retail | 2019 |
| Lambcote Holdings Ltd | Financial services | 2022 |
| Lambert and Flanagan Limited | Professional & scientific | 2007 |
| Lambert Rail Ltd | Construction | 2019 |
| Lambrettaspares.Com Limited | Wholesale & retail | 2007 |
| Lambs Joinery Ltd | Construction | 2019 |
| Lamc 200 Limited | Financial services | 2025 |
| Lamensa Ltd | Hospitality | 2022 |
| Lamfree Ltd | Real estate | 2024 |
| LAMPAK9SERVICES Ltd | Administrative & support | 2023 |
| Lamphouse Limited | Education | 2006 |
| Lana Capital Ltd | Financial services | 2021 |
| Lanamarka Ltd | Construction | 2025 |
| Land Group Holdings Limited | Construction | 2013 |
| Landa & Sons Ltd | Households | 2025 |
| Landela Limited | Information & communication | 2020 |
| Lander (Yorkshire) Limited | Professional & scientific | 2016 |
| Landfill Management Limited | Water & waste | 1986 |
| Landlada Co., Ltd | Wholesale & retail | 2021 |
| Landmark Cash & Carry Limited | Professional & scientific | 1952 |
| Landmark Direct Limited | Professional & scientific | 1982 |
| Landmark Enterprises Limited | Real estate | 2007 |
| Landmark Uk.Com Limited | Professional & scientific | 2000 |
| Landmark Wholesale Limited | Professional & scientific | 1960 |
| Landseair Travel Co. Limited | Administrative & support | 1981 |
| Landshill Ltd | Construction | 2019 |
| Landwind Motor Companies Ltd. | Other services | 2005 |
| Lanes and Events Traffic Management Supplies Ltd | Other services | 2022 |