| Laser Electrical (Midlands) Services Ltd | Construction | 2023 |
| Lass Ladies Aspire 2 Seek Success CIC | Administrative & support | 2026 |
| Lass Limited | Other services | 2021 |
| Last Cast Ltd | Wholesale & retail | 2026 |
| Latroe Investments Ltd | Real estate | 2025 |
| Lauraliz Enterprises Ltd | Administrative & support | 2022 |
| Laurel Kitchen Limited | Hospitality | 2021 |
| Lauren Parsons Limited | Other services | 2012 |
| Laverie Holdings Ltd | Real estate | 2025 |
| Law Security Systems Limited | Administrative & support | 1986 |
| Lawless Holdings Limited | Financial services | 2025 |
| Lawley&Co Ltd | Construction | 2022 |
| Lawlors Limited | Construction | 2003 |
| Lawlors Property Solutions LLP | | 2010 |
| Lawson’S Equestrian Transport Repairs Ltd | Wholesale & retail | 2025 |
| Lawtons Accounting & Consultancy Ltd | Professional & scientific | 2021 |
| LB Accountancy Services Ltd | Professional & scientific | 2016 |
| LB Engineering Solutions Ltd | Professional & scientific | 2024 |
| Lbconstruction&Landscaping Ltd | Construction | 2024 |
| LC Fire Solutions Ltd | Professional & scientific | 2025 |
| LCD Celling and Partitions Ltd | Construction | 2018 |
| LCU Consulting Limited | Information & communication | 2025 |
| LDH Aldridge Ltd | Arts & recreation | 2022 |
| LDS Logistics Ltd | Transport & logistics | 2017 |
| LE Concierge Limited | Administrative & support | 2022 |
| Leading Ace Limited | Public administration | 2024 |
| Leads & Looms Ltd | Manufacturing | 2024 |
| Learning Bridge Ltd | Education | 2023 |
| Leasow Properties Ltd | Real estate | 2022 |
| Leasowes Property Limited | Real estate | 2026 |
| Leather Cauld Limited | Manufacturing | 2025 |
| Lebrett Clothing Group Ltd | Wholesale & retail | 2023 |
| Ledparts Ltd | Wholesale & retail | 2013 |
| LEE Joesbury Driving School Limited | Education | 2015 |
| LEE Turner Construction Limited | Construction | 2016 |
| Legacyflow AI Ltd | Information & communication | 2025 |
| LEGAL4GROWTH Limited | Professional & scientific | 2016 |
| Legion Plumbing & Heating Ltd | Construction | 2010 |
| Legionella AI Ltd | Water & waste | 2025 |
| Leisure Trade Specialists Limited | Wholesale & retail | 2024 |
| Leisure Vehicle Seating Limited | Wholesale & retail | 2020 |
| Leisure Vehicle Services Limited | Wholesale & retail | 2005 |
| Lencal Developments Limited | Construction | 2003 |
| LEO Brickwork Ltd | Construction | 2025 |
| Leon and Leon Ltd | Manufacturing | 2013 |
| Lesscot Engineering Limited | Manufacturing | 2001 |
| Let's Move Midlands Limited | Real estate | 2021 |
| Let's Talk People Ltd | Professional & scientific | 2024 |
| Lettercaugh Ltd | Real estate | 2024 |
| Letwise Property Limited | Real estate | 2025 |
| Levelbest Carpenters Limited | Construction | 2010 |
| LEVELUP360HQ Ltd | Information & communication | 2026 |
| Lexicon (Midlands) Ltd | Manufacturing | 2020 |
| Lexmortis Ltd | Education | 2026 |
| Lexova Accountants Ltd | Professional & scientific | 2023 |
| Leyhill Enterprises Limited | Wholesale & retail | 1990 |
| Leyla Holdings Limited | Real estate | 2021 |
| LF Accountancy Services Limited | Professional & scientific | 2023 |
| LH Catering Limited | Hospitality | 2026 |
| LH Construction (Midlands) Ltd | Construction | 2025 |
| LHH Construction Ltd | Professional & scientific | 2014 |
| Lianat & James Properties Limited | Real estate | 2005 |
| Libero Group Ltd | Financial services | 2022 |
| Liberty Homes (Martin Street) Limited | Construction | 2026 |
| Liberty Process Limited | Wholesale & retail | 2002 |
| Lichfield Windows Limited | Construction | 2014 |
| Lichtgitter (U.K.) Limited | Manufacturing | 1990 |
| Lifestyle Homes (Midlands) Limited | Real estate | 2006 |
| Lighthouse Education Consultancy Ltd | Education | 2018 |
| Like Crystal Limited | Professional & scientific | 2022 |
| Lincolnshire Licences Limited | Financial services | 2000 |
| Lincolnshire Property Investment Fund Limited | Health & social care | 2012 |
| Linden Hose & Adaptors Limited | Manufacturing | 2013 |
| Lindop Developments Limited | Construction | 2021 |
| Linkbridge Assets Ltd | Real estate | 2026 |
| Linnet 1963 Limited | Extraterritorial | 2014 |
| Linton Park Administrative Services Ltd. | Professional & scientific | 2004 |
| Linzi Hair Design Limited | Other services | 2011 |
| Lionheart Combat Events Ltd | Arts & recreation | 2022 |
| Lionra Medical Ltd | Professional & scientific | 2025 |
| Lipur Holdings Limited | Financial services | 2025 |
| Lipurtech Limited | Information & communication | 2020 |
| Lisa Brazier HR Solutions Ltd | Administrative & support | 2025 |
| Lister Holdings Limited | Professional & scientific | 2018 |
| Lister Web Limited | Professional & scientific | 2025 |
| Lite House Electrical Ltd | Wholesale & retail | 2010 |
| Little BIT of Everything - BOE Limited | Wholesale & retail | 2023 |
| Little Brown Mouse Play Cafe Ltd | Hospitality | 2022 |
| Little Events & Balloons Limited | Other services | 2019 |
| Little Gems Nursery & Baby Collection Limited | Wholesale & retail | 2016 |
| Little Miss Sparky Limited | Construction | 2022 |
| Little Spud Graphics Ltd | Professional & scientific | 2026 |
| Littleton Fryer Limited | Hospitality | 2023 |
| Littletonplumbing Ltd | Construction | 2022 |
| Littleworth Road Management Company Limited | Households | 2014 |
| Live Power Solutions Limited | Construction | 2009 |
| Live Voice Data Holdings Limited | Professional & scientific | 2018 |
| Livewire Integrated Services Limited | Construction | 2011 |
| Livewire Power Solutions Ltd | Construction | 2015 |
| Livewire Voice & Data Communications Limited | Construction | 1999 |