| KTK Motors and Parts Ltd | Wholesale & retail | 2024 |
| Kudos Structures Limited | Construction | 2018 |
| Kuhex Ltd | Information & communication | 2011 |
| Kunkun Ltd | Real estate | 2008 |
| Kurdish Barber Midlands Ltd | Other services | 2024 |
| Kurit Ltd | Professional & scientific | 2019 |
| KWD Consulting Limited | Professional & scientific | 2013 |
| Kwik Sure Ltd | Wholesale & retail | 2024 |
| Kwyetlea Limited | Wholesale & retail | 1964 |
| Kyros Business Services Limited | Financial services | 2000 |
| Kyros Franchising Limited | Professional & scientific | 2007 |
| L & a Bridal Limited | Wholesale & retail | 2024 |
| L & H Specialist Services Limited | Real estate | 2008 |
| L & W Investment Group Limited | Real estate | 2025 |
| L E S Mechanical Limited | Construction | 2022 |
| L J Carpentry Solution Ltd | Manufacturing | 2026 |
| L S Electrical (WM) Ltd | Manufacturing | 2013 |
| L&S Raduch Developments Limited | Real estate | 2025 |
| L'Adore Hair Limited | Other services | 2025 |
| L.F Detailing Ltd | Administrative & support | 2026 |
| L.J. Automotive Limited | Wholesale & retail | 2012 |
| LA Carpets Ltd | Construction | 2022 |
| LA Plancha Limited | Hospitality | 2004 |
| LA365PW Limited | Hospitality | 2021 |
| Laburnum Street 1958 Limited | Extraterritorial | 2014 |
| Lacey Green Ltd | Professional & scientific | 2016 |
| Lacuna Investments 2 Ltd | Real estate | 2022 |
| Lacuna Investments Ltd | Real estate | 2020 |
| Lagoona Estates Limited | Real estate | 2024 |
| Laight Designs Ltd | Professional & scientific | 2018 |
| LAJ Property Investments Ltd | Real estate | 2025 |
| Lakeside Electrical and Property Maintenance Ltd | Real estate | 2017 |
| Lana Restaurant Ltd | Hospitality | 2025 |
| Land Attic Ltd | Information & communication | 2018 |
| Land Hero Ltd | Information & communication | 2023 |
| Landmark Maintenance Limited | Administrative & support | 2015 |
| Lando C a Ltd | Wholesale & retail | 2025 |
| Landstar Developments & Construction Limited | Extraterritorial | 2006 |
| Landstar Developments Limited | Real estate | 2004 |
| Landt View Properties Ltd | Real estate | 2023 |
| Langdale Boulders Limited | Hospitality | 2022 |
| Langford Investment Group Limited | Real estate | 2021 |
| Langfords Furniture Limited | Manufacturing | 2013 |
| Langs of Wollaston Limited | Wholesale & retail | 2009 |
| Lantern Direct Housing Limited | Real estate | 2020 |
| Lantern Property Services Limited | Real estate | 2025 |
| Lapal Lane Management Services Limited | Professional & scientific | 2023 |
| Larch Construction Company Limited | Construction | 1977 |
| Laser Games Ltd | Arts & recreation | 2018 |
| Laser Quest Stourbridge Limited | Arts & recreation | 2012 |
| Latrig Consulting Ltd | Professional & scientific | 2019 |
| Latrig Investments Ltd | Real estate | 2020 |
| Latrig Ltd | Professional & scientific | 2012 |
| Laura Jane Johnson Limited | Professional & scientific | 2012 |
| Lauraelizibeth Limited | Wholesale & retail | 2018 |
| Laurel Farm Holdings Limited | Financial services | 2023 |
| Lawnswood & Sons Developments Limited | Construction | 2018 |
| Lawnswood Electrics Limited | Construction | 2006 |
| Lawnswood Homes Limited | Construction | 2016 |
| Lawnswood Kinver Ltd | Construction | 2026 |
| Lawson Taylor Property & Investments Limited | Real estate | 1999 |
| Lawton Pharmacy Consultants Limited | Health & social care | 2011 |
| Lawtons Logistics Limited | Transport & logistics | 2014 |
| Lazy Hill Property Investments Limited | Real estate | 2019 |
| LB Motors & Parts Ltd | Other services | 2016 |
| LB Racking Installations Ltd | Construction | 2020 |
| LBT Building Services Limited | Construction | 2012 |
| LC Pedmore Management Company Ltd | Households | 2023 |
| LCR Accountancy Services Limited | Professional & scientific | 2014 |
| Lcsupply Ltd | Wholesale & retail | 2025 |
| Ldyson Limited | Information & communication | 2020 |
| LE Gutter Cleaning Ltd | Other services | 2022 |
| LE Yuan Limited | Hospitality | 2022 |
| LEA Services Ltd | Professional & scientific | 2003 |
| Leafgreen Limited | Professional & scientific | 2002 |
| Leaneats Ltd | Hospitality | 2023 |
| Leaps and Bounds Trust - Inspiring Change Ltd | Arts & recreation | 2007 |
| Leasecraft AI Ltd | Information & communication | 2026 |
| Leather Genie Ltd | Wholesale & retail | 2023 |
| Leaton Consulting Ltd | Wholesale & retail | 2018 |
| Leaton Estates Holdings Limited | Financial services | 2012 |
| Leaton Estates Limited | Construction | 1999 |
| Lecky Shipping Ltd | Wholesale & retail | 2013 |
| Ledington Moss Design Paint Renovate Limited | Construction | 2011 |
| LEE Bannister Limited | Professional & scientific | 2013 |
| LEE Construction 1971 Limited | Construction | 2023 |
| LEE Hosken Limited | Construction | 2015 |
| Leeke Associates Limited | Professional & scientific | 1998 |
| Leemoore Lifts Ltd | Manufacturing | 2013 |
| Leesy N RJ Properties Limited | Real estate | 2026 |
| Legacy Fire Limited | Construction | 2008 |
| Legacy Homes and Redevelopments Ltd | Construction | 2026 |
| Legatum Maiorum Limited | Real estate | 2018 |
| Legend Errey Limited | Administrative & support | 2003 |
| Leicester Close Residents Limited | Households | 1983 |
| Leigham Reynolds Limited | Administrative & support | 2021 |
| Leighton Squared Limited | Professional & scientific | 2011 |
| Leighton Squared Projects Limited | Professional & scientific | 2018 |
| Lelkes Engineering Ltd | Manufacturing | 2015 |
| Lemota Ltd | Wholesale & retail | 2026 |