| L Smith & SON Recycling Ltd | Water & waste | 2024 |
| L&A Property Management Ltd | Real estate | 2024 |
| L&C Catering Consultancy Ltd | Hospitality | 2025 |
| L&M Transport Logistics Ltd | Transport & logistics | 2025 |
| L-P-N Service Limited | Wholesale & retail | 2018 |
| L.A.H Services Ltd | Construction | 2016 |
| L.O'Shea Limited | Professional & scientific | 2024 |
| La&Ra Trans Ltd | Administrative & support | 2017 |
| Lacey Corp Ltd | Wholesale & retail | 2025 |
| Ladies Gym UK Ltd | Arts & recreation | 2019 |
| Laguna Properties Limited | Hospitality | 2021 |
| Lakeside (Barton Marina) Freehold Company Limited | Real estate | 2022 |
| Lamoon Ltd | Hospitality | 2026 |
| Land Sea Jointing Ltd | Construction | 2017 |
| Landform Midlands Ltd | Construction | 2026 |
| Landsworth Properties Ltd | Real estate | 2021 |
| Lane Sale Limited | Wholesale & retail | 2025 |
| Langford Testing Ltd | Information & communication | 2024 |
| Langham Leisure Limited | Professional & scientific | 1991 |
| Langley Consulting Limited | Information & communication | 2011 |
| Langley Residential Limited | Real estate | 2026 |
| Lantern Tech Limited | Information & communication | 2024 |
| LAP Insurance Brokers Limited | Financial services | 2004 |
| Lappella Ltd | Manufacturing | 2021 |
| Lappella(Uk) Ltd | Manufacturing | 2024 |
| Larsons Properties Ltd | Real estate | 2025 |
| Laserme Studio Ltd | Other services | 2024 |
| Lash Cosmetics Midlands Ltd | Wholesale & retail | 2015 |
| Lassalite Ltd | Health & social care | 2023 |
| Laundry Xpress Ltd | Administrative & support | 2024 |
| Laurel Crowned Ltd | Wholesale & retail | 2022 |
| Laurie Charles Training and Development Ltd | Education | 2025 |
| Laurita Ltd | Construction | 2024 |
| Lavare LUX Ltd | Other services | 2024 |
| Lavinia Burton Ltd | Wholesale & retail | 2017 |
| Lavish Import & Export Limited | Wholesale & retail | 2024 |
| Lavy&Andy Couriers Ltd | Transport & logistics | 2023 |
| Lawns and Pitches Ltd | Administrative & support | 2025 |
| Lazeez Desserts Limited | Hospitality | 2025 |
| La’Ero Ltd | Wholesale & retail | 2023 |
| LB Fire Ltd | Construction | 2025 |
| LBG Contracting Ltd | Construction | 2026 |
| LCO Trading Limited | Administrative & support | 2013 |
| LCR Couriers Ltd | Transport & logistics | 2025 |
| LDC Falcon Limited | Education | 2018 |
| LDK2 Limited | Professional & scientific | 2025 |
| Lead Design Organisation Ltd | Construction | 2015 |
| Lean Digital Advisory Limited | Extraterritorial | 2023 |
| Leavesley Asset Management Limited | Financial services | 2017 |
| LEE House Kitchen Limited | Hospitality | 2026 |
| LEE Kitchen Burton Ltd | Hospitality | 2023 |
| Lee's House Kitchen Ltd | Hospitality | 2026 |
| Lees Civil Engineering Ltd | Construction | 2023 |
| Leetec Auto Limited | Wholesale & retail | 2022 |
| Legend Scissors Ltd | Other services | 2021 |
| Legend Spa Ltd | Health & social care | 2022 |
| Leiras Kitchen Ltd | Hospitality | 2025 |
| Leisure Home Sales Limited | Real estate | 2008 |
| Leisure Link Electronic Entertainment Limited | Extraterritorial | 1986 |
| Leka Sait Ltd | Construction | 2025 |
| Lelenkas Ltd | Wholesale & retail | 2022 |
| Lemon Rose Accounting Limited | Professional & scientific | 2017 |
| Lennoxtax Limited | Transport & logistics | 2025 |
| Leno Ltd | Wholesale & retail | 2019 |
| LEO Carlyon Limited | Information & communication | 2004 |
| LEO Financial Limited | Professional & scientific | 2023 |
| LEO Storm Ltd | Wholesale & retail | 2023 |
| LEO TIN Ltd | Wholesale & retail | 2021 |
| Leopold Properties Ltd | Real estate | 2024 |
| Lerka Ltd | Construction | 2026 |
| Lesser-Spotted Furniture Limited | Wholesale & retail | 2018 |
| Level UP Sports Tours Ltd | Arts & recreation | 2022 |
| Levo Nutrition Ltd | Wholesale & retail | 2025 |
| Lewiccy Investments Ltd | Real estate | 2026 |
| Lewis Anderson Enterprises Ltd | Real estate | 2025 |
| Lewis Anderson Holdings Ltd | Financial services | 2026 |
| Lewis Mason Electrical Limited | Construction | 2023 |
| LEY Fabrications Limited | Manufacturing | 2019 |
| LF Decor Ltd | Construction | 2019 |
| LGB Transport Ltd | Transport & logistics | 2021 |
| LGW Services Ltd | Construction | 2024 |
| LH Turner Distribution Limited | Transport & logistics | 2022 |
| Lhgs Property Ltd | Real estate | 2025 |
| LHS Consulting Ltd | Other services | 2011 |
| Liam Olivia Consultancy Ltd | Information & communication | 2013 |
| Libera Partners LLP | | 2011 |
| Libra Window Cleaning Ltd | Administrative & support | 2026 |
| Lichfield Leisure Vehicles Ltd | Wholesale & retail | 2020 |
| Lichfield Mobile Carwash Ltd | Wholesale & retail | 2026 |
| Lichfield Running Club | Arts & recreation | 2011 |
| Lichfield Skip Hire Limited | Extraterritorial | 2015 |
| Life on Dreams Limited | Other services | 2011 |
| Lifeboat Lettings (Derby) Limited | Real estate | 2011 |
| Lifeboat Maintenance (Derby) Ltd | Construction | 2018 |
| Lifechoice Services Ltd | Health & social care | 2024 |
| Lifestyle Accounting Ltd | Professional & scientific | 2006 |
| Lifestyle Barbers BOT Limited | Real estate | 2024 |
| Lifestyle Investments Limited | Wholesale & retail | 2018 |
| Lifetech Consultants Ltd | Information & communication | 2011 |
| Light-Years Hire Ltd | Administrative & support | 2020 |