| Lasya Hamsini Properties Ltd | Real estate | 2025 |
| Lata and Sons Transport Limited | Transport & logistics | 2022 |
| Later Life Guidance Limited | Administrative & support | 2016 |
| Lathusha Ltd | Wholesale & retail | 2017 |
| Launamain Limited | Households | 1974 |
| Launchpad Labs Limited | Information & communication | 2026 |
| Launderette 83 Ltd | Administrative & support | 2025 |
| Lauradean Limited | Households | 1983 |
| Laurel Financial Planning Limited | Financial services | 2021 |
| Laurence Aston Architects Limited | Professional & scientific | 2003 |
| LAV Ltd | Construction | 2025 |
| Lavandl Construction UK Ltd | Construction | 2025 |
| Lavender Bidco 2 Limited | Financial services | 2024 |
| Lavender Investment Ltd | Real estate | 2023 |
| Lavender West Tower Limited | Financial services | 2019 |
| Lavender WT Hotel Limited | Hospitality | 2019 |
| Lavender WT Limited | Real estate | 2019 |
| Lavender WT Retail Limited | Real estate | 2025 |
| Lavender Wthco Limited | Real estate | 2019 |
| Lavish Bricks Ltd | Real estate | 2025 |
| LAW6 Properties Ltd | Real estate | 2024 |
| Lawa & Hana Barber Ltd | Other services | 2026 |
| Lawn DOC Limited | Administrative & support | 2015 |
| Lawrence Property Development Limited | Real estate | 2024 |
| Lawson Brickwork Limited | Extraterritorial | 2019 |
| Laxmi UK Holdings Limited | Financial services | 2023 |
| Laxsan Properties Ltd | Real estate | 2025 |
| Laypave Ltd | Construction | 2026 |
| Lazell and Tuck Holdings Ltd | Financial services | 2025 |
| Lazell and Tuck Investments Ltd | Real estate | 2025 |
| Lazell and Tuck Lettings Ltd | Financial services | 2022 |
| Lazyhawk Limited | Arts & recreation | 2018 |
| LBP Group Ltd | Construction | 2018 |
| LC Red Ltd | Construction | 2024 |
| Lcct Group Ltd | Wholesale & retail | 2026 |
| LCG Logistics Ltd | Transport & logistics | 2022 |
| Lcuk International Ltd | Hospitality | 2014 |
| LD Installations & Home Improvements Ltd | Construction | 2023 |
| LE Cherri Collective Ltd | Professional & scientific | 2025 |
| LE CNC Engineering Ltd | Professional & scientific | 2023 |
| Lead 365 Ltd | Information & communication | 2016 |
| Lead on Digital Ltd | Administrative & support | 2021 |
| Leadership Executive Search Ltd | Administrative & support | 2020 |
| Leadplug Limited | Information & communication | 2025 |
| Leaf Creative Landscapes Limited | Administrative & support | 2021 |
| Leaf House Property Limited | Real estate | 2023 |
| Lean on ME Care Services Limited | Households | 2020 |
| Leap Tutors Education and Training Services Limited | Education | 2015 |
| Learnpad Limited | Information & communication | 2013 |
| Leasecentral Property Management Limited | Households | 1989 |
| Leasow Reach (Twyning) Management Company Limited | Households | 2025 |
| Leavers Rural Surveyors Ltd | Professional & scientific | 2013 |
| Lebek Food Ltd | Hospitality | 2020 |
| Ledbury Hunt Securities Limited | Professional & scientific | 1937 |
| Ledbury Valeting Centre Ltd | Administrative & support | 2023 |
| Ledbury Vision Limited | Wholesale & retail | 1997 |
| LEE Logic Ltd | Professional & scientific | 2019 |
| LEE Property Holdings Ltd | Real estate | 2022 |
| LEE Webb Limited | Real estate | 2023 |
| Lee's Coatings Ltd | Construction | 2019 |
| Leemo Limited | Hospitality | 2008 |
| Leeways Group Limited | Financial services | 2017 |
| Leeways Holdings Limited | Financial services | 1996 |
| Leeways Joinery Limited | Manufacturing | 1971 |
| Leeways Packaging Services Limited | Manufacturing | 1971 |
| Left Right Left Ltd | Wholesale & retail | 2019 |
| Legacy Estate Planning & Wills Ltd. Ltd. | Financial services | 2018 |
| Legacy First Advisory Services Limited | Financial services | 2023 |
| Legally Bound Limited | Professional & scientific | 2014 |
| Legend Dice Limited | Wholesale & retail | 2018 |
| Leighton Wilks Roofing Ltd | Construction | 2025 |
| Leisure Life Parks Limited | Real estate | 2017 |
| Lel's Cakes & Bakes Limited | Hospitality | 2023 |
| Lella Heritage Ltd | Real estate | 2025 |
| Lely Ltd | Other services | 2024 |
| LEO Barberz Ltd | Other services | 2025 |
| Leonardo Ventures Ltd | Health & social care | 2023 |
| Leonis Accountants Limited | Professional & scientific | 2014 |
| Lepana Ltd | Hospitality | 2020 |
| Lerads PVT Ltd | Real estate | 2026 |
| Leroy Patterson Ltd | Financial services | 2022 |
| Lesanne Court Management Company Limited | Households | 2000 |
| LET ME Help YOU Ltd | Administrative & support | 2019 |
| Let's Advocate CIC | Professional & scientific | 2025 |
| Letrad Ltd | Financial services | 2024 |
| Lets Go 24/7 Ltd | Transport & logistics | 2026 |
| Levet Media Limited | Professional & scientific | 2024 |
| Lewcott Exterior Cleaning Ltd | Construction | 2021 |
| Lewis & Confaloni Construction Limited | Construction | 2021 |
| Lewis Building Solutions Ltd | Construction | 2020 |
| Lewis Enterprise (Gloucester) Ltd | Hospitality | 2018 |
| Lewis Ludlow Limited | Real estate | 2018 |
| Lewis Ludlow Testimonial Ltd | Arts & recreation | 2026 |
| Lewis Roofing Solutions Ltd | Construction | 2015 |
| Lewis Scaffolding Solutions Limited | Construction | 2021 |
| Lewiston Mill Management Limited | Households | 2017 |
| LEX Consultants Limited | Professional & scientific | 2013 |
| Lexicon Estates Limited | Households | 1999 |
| Leyton Place Limited | Professional & scientific | 2019 |
| LGA Engineering Ltd | Professional & scientific | 2024 |