| Laserform Limited | Manufacturing | 2009 |
| Lashious Beauty Walsall Ltd | Other services | 2025 |
| Lastkick Ltd | Information & communication | 2025 |
| Latempus Holdings Ltd | Administrative & support | 2023 |
| Latham & Bond Recruitment Group Limited | Administrative & support | 2020 |
| Latham & Company Accountants Limited | Professional & scientific | 2006 |
| Lathecrest Limited | Administrative & support | 1980 |
| Latif & Rahman Properties Ltd | Real estate | 2021 |
| Latp Ltd | Hospitality | 2015 |
| Laura Greenwood Osteopathy Limited | Administrative & support | 2024 |
| Laurels Healthcare Ltd | Wholesale & retail | 2024 |
| Lauren Industries Limited | Construction | 1993 |
| Lauren Systems Limited | Extraterritorial | 2004 |
| Lavin Group Ltd | Construction | 2026 |
| Law School of Motoring Ltd | Education | 2025 |
| Lawley COD & Grill Ltd | Hospitality | 2025 |
| Lawmiracle Ltd | Information & communication | 2020 |
| Lawrence Meats Limited | Wholesale & retail | 1978 |
| Lawrence Stanton Developments Limited | Construction | 2014 |
| Lawsearch Talent Ltd | Administrative & support | 2026 |
| Laxmi Kuber Limited | Real estate | 2020 |
| Lazy Hill Tavern Limited | Hospitality | 2018 |
| LB Foods Ltd | Hospitality | 2024 |
| LC Welding Technical Services Ltd | Professional & scientific | 2011 |
| LC50 Property Ltd | Construction | 2026 |
| LCD 2026 Realisations Limited | Wholesale & retail | 2018 |
| LCD Trans Logistics Ltd | Transport & logistics | 2026 |
| LCP GAS Limited | Construction | 2024 |
| LCS Social Work Solutions Ltd | Health & social care | 2024 |
| Lcuk Bracknell Ltd | Other services | 2021 |
| Lcuk Edinburgh Ltd | Other services | 2021 |
| Lcuk Glasgow Central Ltd | Other services | 2021 |
| Lcuk Leeds Ltd | Other services | 2021 |
| Lcuk Leicester Ltd | Other services | 2021 |
| Lcuk Liverpool Ltd | Other services | 2021 |
| Lcuk Nottingham Ltd | Other services | 2021 |
| Lcuk Solihull Ltd | Other services | 2021 |
| Lcuk Sunderland Ltd | Other services | 2022 |
| LD Business Management Limited | Professional & scientific | 2019 |
| LD Driving Services Ltd | Transport & logistics | 2014 |
| Ldcl Limited | Professional & scientific | 2023 |
| LDN Trading Limited | Wholesale & retail | 2013 |
| LDW Flat Roofing Services Ltd | Construction | 2023 |
| LE Capital Holdings Ltd | Financial services | 2026 |
| LE Mange Limited | Hospitality | 2007 |
| LEA Marston Equestrian Centre Limited | Agriculture & fishing | 2013 |
| Lead Catalyst Ltd | Other services | 2024 |
| Lead Educare HF Consultancy Ltd | Education | 2023 |
| Leada Communications Ltd | Information & communication | 2021 |
| Leadenhall Capital Limited | Real estate | 2018 |
| Leadenhall Investment Management Limited | Other services | 2021 |
| Leading Nurturing Residential Specialist Ltd | Health & social care | 2024 |
| Leaf Business Management Ltd | Professional & scientific | 2021 |
| Leag Holdings Ltd | Construction | 2025 |
| Leaksys Limited | Manufacturing | 2006 |
| Leamington Cricketers Limited | Hospitality | 2024 |
| Leamore Barbers Ltd | Other services | 2025 |
| Leamore Group Holdings Limited | Professional & scientific | 2026 |
| Leamore Holdings Limited | Professional & scientific | 2005 |
| Leamore Internet Limited | Other services | 2001 |
| Leamore News Ltd | Wholesale & retail | 2023 |
| Leamore Property Limited | Real estate | 2005 |
| Leamore Windows Limited | Manufacturing | 1983 |
| Lean Manufacturing and Resourcing Limited | Professional & scientific | 1999 |
| Leander Sports Consultancy Ltd | Professional & scientific | 2025 |
| Leander Trading Co. Limited | Transport & logistics | 1983 |
| Leanfox Sports Limited | Wholesale & retail | 2018 |
| Learn on the JOB Limited | Administrative & support | 2018 |
| Learn to Achieve Walsall Ltd | Education | 2017 |
| Learning Loft Limited | Education | 2025 |
| Learnplay Foundation Ltd. | Education | 2007 |
| Leases of Walsall Limited | Financial services | 2017 |
| Lebronze Alloys UK Limited | Manufacturing | 1982 |
| Lecker Limited | Professional & scientific | 2015 |
| Lecointe Living & Property Management Ltd | Real estate | 2026 |
| LED Decor UK Limited | Administrative & support | 2022 |
| LEE and LEE Restaurants Limited | Hospitality | 2017 |
| LEE Anthony Smith Ltd | Transport & logistics | 2019 |
| LEE Field Racing Ltd | Arts & recreation | 2019 |
| LEE John Haydon Limited | Professional & scientific | 2023 |
| Leegary Properties Limited | Real estate | 2013 |
| Leemark Spinnings Limited | Manufacturing | 2010 |
| Legacy Consultants Limited | Professional & scientific | 2022 |
| Legacy Official Ltd | Wholesale & retail | 2021 |
| Legacyedge Ltd | Construction | 2025 |
| Legal Assist Walsall Ltd | Professional & scientific | 2022 |
| Legend Construction and Shopfitting Ltd | Manufacturing | 2019 |
| Lehlah Services Ltd | Water & waste | 2024 |
| Leighswood Court Residents Limited | Households | 1981 |
| Leisure Audit Limited | Transport & logistics | 2018 |
| Leisure Landscapes Limited | | 1976 |
| LEM Demolition Ltd | Administrative & support | 2022 |
| Lemon Zest Events Ltd | Professional & scientific | 2012 |
| Lena Financial Services Ltd | Financial services | 2019 |
| Lending Options Ltd | Financial services | 2019 |
| LEO & YAN Limited | Information & communication | 2022 |
| Leominster Healthcare Limited | Extraterritorial | 2025 |
| Leonce Diomi Ltd | Other services | 2018 |
| Lero Group Properties Ltd | Real estate | 2024 |
| Lero Healthcare Group Ltd | Health & social care | 2024 |