| Labadi Restaurant Ltd | Hospitality | 2024 |
| Labs Logistics Ltd | Transport & logistics | 2023 |
| Lagacy Builders Ltd | Construction | 2025 |
| Lakeside Brackmills Limited | Construction | 2025 |
| Lakhvinder Kaur Ltd | Transport & logistics | 2025 |
| Lamar Services Limited | Other services | 2020 |
| Lamot Ventures Limited | Health & social care | 2015 |
| Langley Business Systems Limited | Wholesale & retail | 1975 |
| Langley Inc Ltd | Wholesale & retail | 2026 |
| Langley Pet Supplies & Gardens Ltd | Wholesale & retail | 2018 |
| Langley Takeaway Ltd | Hospitality | 2026 |
| Lapparel Limited | Wholesale & retail | 2022 |
| Lapworth K Limited | Wholesale & retail | 2014 |
| Latham's Classic Cars Limited | Other services | 2015 |
| Lathams Holdings Limited | Financial services | 2018 |
| Lathams Security Doorsets Limited | Construction | 2011 |
| Latrop Systems Ltd | Construction | 2007 |
| Lausar Properties Limited | Professional & scientific | 2005 |
| Lava Management Services Ltd | Professional & scientific | 2026 |
| LBH Solutions Limited | Financial services | 2016 |
| LC1 Engineering Ltd | Professional & scientific | 2023 |
| Leabrook Investments Limited | Construction | 1965 |
| LEAP2GROWTH UK Ltd | Professional & scientific | 2026 |
| Leapestart Limited | Wholesale & retail | 2025 |
| Leapstart Limited | Wholesale & retail | 2024 |
| Leen Global Ltd | Wholesale & retail | 2022 |
| Legacy Breakdown and Recovery Ltd | Transport & logistics | 2022 |
| Legal Estates Birmingham Ltd | Real estate | 2023 |
| Lennox R Limited | Wholesale & retail | 2016 |
| LES FIX Ltd | Construction | 2021 |
| Letsfix Limited | Households | 2013 |
| Leverii Services Ltd | Health & social care | 2025 |
| Levys of Birmingham Ltd | Wholesale & retail | 2020 |
| Lewis Alloy Holdings Limited | Administrative & support | 2021 |
| LEX Corp UK Limited | Administrative & support | 2009 |
| Leylands Lane Healthcare Ltd | Wholesale & retail | 2020 |
| LG Trading Services Ltd | Other services | 2023 |
| LHR Investments Limited | Real estate | 1996 |
| Lichfield South Management Company Limited | Households | 2022 |
| Life Changing Adventures Ltd | Administrative & support | 2018 |
| Lifesavers Driving School Ltd | Education | 2012 |
| Lifestyle Midlands Ltd | Wholesale & retail | 2019 |
| Lifestyle Today (UK) Limited | Information & communication | 2006 |
| Lifford Properties Limited | Real estate | 1947 |
| Lilleshall Building Products Limited | Professional & scientific | 1992 |
| Lilleshall International Holdings Limited | Professional & scientific | 1991 |
| Lilleshall Limited | Professional & scientific | 1880 |
| Lincoln Western Limited | Construction | 2015 |
| Lingfield Assets LLP | | 2006 |
| Lingfield Developments Limited | Extraterritorial | 1997 |
| Lion Farm Action Centre (Sandwell) Ltd. | Education | 1995 |
| Lion Farm Fish Bar Ltd | Hospitality | 2024 |
| Lisa JAY Hair Extensions Ltd | Other services | 2026 |
| Little Beech Blackheath Ltd | Hospitality | 2026 |
| Little Hands Big Meals CIC | Education | 2026 |
| Little Lights CIC | Hospitality | 2025 |
| Little Local Book Ltd | Information & communication | 2018 |
| Little N Limited | Wholesale & retail | 2018 |
| Little POT' Self Store Limited | Real estate | 2026 |
| Little POT' Transport Ltd | Transport & logistics | 2004 |
| Liv's Place Ltd | Hospitality | 2026 |
| Livesey E Limited | Wholesale & retail | 2018 |
| LJC (Stone) Limited | Other services | 2003 |
| LKG Investments Ltd | Real estate | 2023 |
| LM Jackson Properties Ltd | Real estate | 2023 |
| LMJ Marketing & Advertising Services Ltd | Professional & scientific | 2022 |
| LMT Transport Ltd | Wholesale & retail | 2021 |
| LNR Properties Ltd | Real estate | 2014 |
| Local Expert Cleaning Ltd | Administrative & support | 2025 |
| Localsolutionwestmids Ltd | Transport & logistics | 2024 |
| Locumflex Ltd | Professional & scientific | 2025 |
| Logged Ltd | Information & communication | 2019 |
| Logic Safety Ltd | Wholesale & retail | 2020 |
| Logistical Clearance Ltd | Administrative & support | 2026 |
| London Lashes Limited | Other services | 2025 |
| Longrigg I SOT Limited | Wholesale & retail | 2007 |
| Lord Combustion Holdings Limited | Construction | 2013 |
| Lord Combustion Services Limited | Construction | 1982 |
| Lords Inspirations Ltd | Information & communication | 2013 |
| Lorraine's Care Ltd | Health & social care | 2024 |
| Love Your Postcode 2 Limited | Real estate | 2016 |
| Love Your Postcode Limited | Real estate | 2012 |
| Lovelia Ltd | Health & social care | 2025 |
| Lovenza Trade Development and Tourism Company Ltd | Construction | 2022 |
| LRM Dance and Performance Limited | Other services | 2019 |
| Lrztransport Ltd | Transport & logistics | 2025 |
| Lsmen Ltd | Other services | 2026 |
| Luckyshop & Partners Ltd | Wholesale & retail | 2024 |
| Lucram Property Solutions Ltd | Real estate | 2025 |
| Lucy B Property Limited | Real estate | 2024 |
| Ludlow Fish Bar Limited | Hospitality | 2023 |
| Lukas Computing Services Ltd | Information & communication | 2020 |
| Lukasway Ltd | Transport & logistics | 2026 |
| Luke Brindle Consultancy Limited | Information & communication | 2014 |
| Lukulus Ltd | Transport & logistics | 2019 |
| Lukzlo Ltd | Transport & logistics | 2019 |
| Lunathreads Ltd | Wholesale & retail | 2025 |
| Lunexa Ltd | Wholesale & retail | 2024 |
| Lupe Training Ltd | Education | 2020 |
| Luxe Room Interiors Ltd | Wholesale & retail | 2020 |