| KS Litt Transport Ltd | Transport & logistics | 2020 |
| KS Recovery Limited | Wholesale & retail | 2025 |
| KS Secure FM Ltd | Administrative & support | 2026 |
| KSD Couriers Ltd | Transport & logistics | 2020 |
| Kset Solutions Limited | Information & communication | 2015 |
| KSM Wholesaler Ltd | Wholesale & retail | 2026 |
| KSS Distribution Limited | Wholesale & retail | 2014 |
| KSS Property Services Ltd | Real estate | 2018 |
| KSS Transport Limited | Transport & logistics | 2009 |
| Kube Storage Ltd | Administrative & support | 2015 |
| Kukki Fitting Ltd | Construction | 2023 |
| Kurd CUT DM Ltd | Other services | 2026 |
| Kurd CUT MBR Ltd | Other services | 2025 |
| Kurd Fade Ltd | Other services | 2023 |
| Kurd Trim Ltd | Other services | 2025 |
| Kurdi Food Ltd | Wholesale & retail | 2023 |
| KVR Locums Ltd | Administrative & support | 2023 |
| KVS Softwares Limited | Information & communication | 2015 |
| Kwabes Heritage Ltd | Construction | 2021 |
| Kwamay Professional Services Ltd | Professional & scientific | 2026 |
| Kwaziri Limited | Transport & logistics | 2025 |
| KWK & Sons Ltd | Wholesale & retail | 2025 |
| Kyaworks Ltd | Information & communication | 2026 |
| Kyler Solutions Ltd | Construction | 2020 |
| L & a Courier Ltd | Transport & logistics | 2025 |
| L a Machining Limited | Manufacturing | 2025 |
| L.A Wise Build Ltd | Construction | 2025 |
| L.A. Management Services Limited | Real estate | 1996 |
| LA Brioche DE Luxe Ltd | Wholesale & retail | 2026 |
| LA Fontana (Pendre) Ltd | Hospitality | 2017 |
| LA LUZ Life Coach and Wellbeing Services C.I.C. | Administrative & support | 2022 |
| LA Powder Coating Ltd | Manufacturing | 2026 |
| LAB Properties WM Ltd | Real estate | 2025 |
| Lady Libation Ltd | Hospitality | 2017 |
| Lahrians Store Ltd | Wholesale & retail | 2021 |
| Lakhan Capital Limited | Real estate | 2024 |
| Lakhvir Kaur Ltd | Construction | 2021 |
| Laloor Limited | Wholesale & retail | 2025 |
| Landsgate Management Ltd | Real estate | 2020 |
| Lanes Collective Ltd | Financial services | 2025 |
| Langley Transport WM Ltd | Transport & logistics | 2026 |
| Langoni Childcare Ltd | Health & social care | 2018 |
| Lanketproperties Ltd | Real estate | 2026 |
| Laplace Developers Limited | Construction | 2022 |
| Lara Santiago Limited | Wholesale & retail | 2019 |
| Lattys Premium Cleaning Services Ltd | Administrative & support | 2025 |
| Laurentiu Transport Ltd | Transport & logistics | 2021 |
| Lava Autocare Ltd | Wholesale & retail | 2020 |
| Lavender Property Solutions Ltd | Real estate | 2017 |
| Lavender Womens Health Ltd | Administrative & support | 2026 |
| Lavish Skins Ltd | Wholesale & retail | 2021 |
| Law Scrutineers & Visa Limited | Information & communication | 2024 |
| Lawal Healthcare Services Limited | Real estate | 2014 |
| Lawmat Ltd | Professional & scientific | 2015 |
| Lazuli and Co Limited | Wholesale & retail | 2021 |
| LD Construction Services Ltd | Construction | 2025 |
| LDA Oakway Buildings Limited | Wholesale & retail | 2008 |
| LE Shoks House Ltd | Wholesale & retail | 2024 |
| Leabon Limited | Administrative & support | 2024 |
| Leaf EHS Services Ltd | Professional & scientific | 2016 |
| Leaf Logistics Ltd | Transport & logistics | 2024 |
| Learn Science Together Ltd | Education | 2024 |
| Learning Skills Ltd | Education | 2013 |
| Learningforfutureinvestment Ltd | Education | 2017 |
| Leena Logistics Ltd | Transport & logistics | 2019 |
| Legion Gym Ltd | Arts & recreation | 2020 |
| Legitave Ltd | Construction | 2024 |
| Lenos Industries Ltd | Wholesale & retail | 2023 |
| Lenxit X Ltd | Wholesale & retail | 2021 |
| LEO Cars Birmingham Ltd | Wholesale & retail | 2020 |
| LEO Cecilia Limited | Real estate | 2022 |
| LEO Property Lettings Limited | Real estate | 2019 |
| Letang Properties Ltd | Real estate | 2024 |
| Lets Shop 755 Limited | Wholesale & retail | 2024 |
| Lets Tipit Ltd | Information & communication | 2025 |
| Lettingituk Limited | Real estate | 2016 |
| Letuloba Transport Ltd | Administrative & support | 2016 |
| LGC Property Estates Ltd | Real estate | 2024 |
| LGS Investments Limited | Real estate | 2022 |
| LHM Business Consulting Ltd | Information & communication | 2024 |
| LIA Salon Ltd | Other services | 2022 |
| Libas and More Ltd | Wholesale & retail | 2021 |
| Liberty ARC Ltd | Wholesale & retail | 2021 |
| Liberty Estate Agents (WM) Limited | Real estate | 2012 |
| Lifechangers Properties Ltd | Real estate | 2021 |
| Lifted Living Ltd | Construction | 2025 |
| Lighthouse Freehold Management Limited | Real estate | 2026 |
| Lightwoods Solutions Limited | Information & communication | 2013 |
| Like Treasure Trade Ltd | Wholesale & retail | 2022 |
| Lilliput Lodge Childrens Day Nursery Limited | Education | 2002 |
| Limits Transport Ltd | Transport & logistics | 2024 |
| Limoutec Limited | Wholesale & retail | 2019 |
| Linak Limited | Professional & scientific | 1999 |
| Linak-Uk Limited | Wholesale & retail | 1990 |
| Linji Foods Limited | Hospitality | 2024 |
| Linked Travel Ltd | Transport & logistics | 2025 |
| Lister Supplies Limited | Wholesale & retail | 2019 |
| Lister Tube Limited | Wholesale & retail | 2019 |
| Little Bears Club Ltd | Education | 2026 |
| Little Bengal Dawley Ltd | Hospitality | 2022 |