| Lime Architecture Limited | Professional & scientific | 2011 |
| Lime Computer Services Limited | Information & communication | 1999 |
| Lime CS Holdings Limited | Financial services | 2013 |
| Lime Social Marketing, Media & Communications Ltd | Professional & scientific | 2010 |
| Limestone Risk Solutions Limited | Financial services | 2026 |
| Lina Linen Ltd | Other services | 2026 |
| Linc 2 Consulting Ltd | Professional & scientific | 2024 |
| Lincoln House Property Management Company Limited | Hospitality | 2003 |
| Lincolnshire Beetroot Company Limited | Manufacturing | 2012 |
| Lindridge Road Limited | Arts & recreation | 2022 |
| Linol Limited | Professional & scientific | 2025 |
| Linq Events Ltd | Administrative & support | 2025 |
| Linwood Trade Supplies Ltd | Wholesale & retail | 2018 |
| Lippy Limited | Manufacturing | 2026 |
| Liquid Bars Limited | Hospitality | 2008 |
| Litecomms Limited | Professional & scientific | 2018 |
| Little Bears Softplay Limited | Health & social care | 2024 |
| Little Haven Properties Limited | Construction | 2017 |
| Little Loves Pet Boarding Ltd | Other services | 2026 |
| Little Soldier Productions | Arts & recreation | 2012 |
| Little Sprouts Forest School Ltd | Health & social care | 2019 |
| Little Stars Pre-School Barton Limited | Health & social care | 2021 |
| Littleworth Holdings Ltd | Real estate | 2021 |
| Live in Wirral Ltd | Real estate | 2017 |
| Livem Ltd | Financial services | 2017 |
| Living at 12 Ltd | Wholesale & retail | 2020 |
| Lizardillo Limited | Professional & scientific | 2014 |
| LJ Goodwin & Co Limited | Professional & scientific | 2002 |
| LJG Maintenance Limited | Administrative & support | 2020 |
| LJH Holdings (Midlands) Limited | Financial services | 2025 |
| LK Groves Ltd | Administrative & support | 2022 |
| Llangarron Ltd | Administrative & support | 2021 |
| Lloyds Associate Limited | Financial services | 2020 |
| Lloyds British Ssas Limited | Financial services | 2025 |
| Lloyds Group Limited | Professional & scientific | 2025 |
| Lloyds International Limited | Professional & scientific | 2025 |
| LM Agencies UK Limited | Wholesale & retail | 2019 |
| LM Rigging Ltd | Arts & recreation | 2026 |
| Lmep Services Limited | Real estate | 2010 |
| LMH Blithfield (Management) Ltd | Real estate | 2024 |
| LMS (Lichfield) Limited | Wholesale & retail | 1980 |
| LNR Estates Ltd | Real estate | 2026 |
| LO & LEW Limited | Hospitality | 2017 |
| Loanguard Limited | Construction | 1979 |
| Lobley Properties Ltd | Real estate | 2025 |
| Lobsteranha Ltd | Transport & logistics | 2019 |
| Locked Away Ltd | Real estate | 2024 |
| Locks Management Services Limited | Real estate | 2019 |
| Locus Limited | Professional & scientific | 2024 |
| Lodge Hill Land Limited | Extraterritorial | 2005 |
| Lofty Insulation Limited | Construction | 2023 |
| Logi Engineering Limited | Manufacturing | 2017 |
| Logi Laser Engineering Limited | Manufacturing | 2020 |
| Logicmate Limited | Information & communication | 2005 |
| Logie Bear Holdings Limited | Financial services | 2025 |
| Lombardis Consulting Limited | Professional & scientific | 2010 |
| Longdon Stud Limited | Agriculture & fishing | 1964 |
| Lonsdale & Dutch Ltd | Wholesale & retail | 2022 |
| Lookafteryourdog Ltd | Other services | 2011 |
| Lorna D Sheldon Ltd | Professional & scientific | 2012 |
| LOS Banditos Lichfield Ltd | Hospitality | 2020 |
| Loubear Limited | Arts & recreation | 2019 |
| Loubear Trading AS Temple Martial Arts Limited | Arts & recreation | 2021 |
| Louise Gale Design Limited | Professional & scientific | 2002 |
| Louise Mccarthy UN- Limited | Professional & scientific | 2024 |
| Lourdes Associates Limited | Professional & scientific | 2006 |
| Love My Libre Ltd | Wholesale & retail | 2019 |
| Love Thai Ltd | Hospitality | 2025 |
| Love Your Fence Limited | Construction | 2024 |
| LOW Carbon Investments Limited | Professional & scientific | 2009 |
| Lowe Accountancy Services Ltd | Professional & scientific | 2016 |
| LP & Sons Tree Care Ltd | Administrative & support | 2026 |
| LP11 Ltd | Other services | 2025 |
| LP29 Limited | Other services | 2023 |
| LS Body Matters Limited | Health & social care | 2013 |
| LT & R Vowles Limited | Manufacturing | 1994 |
| LTS Consulting Limited | Professional & scientific | 2005 |
| Lucro Software Solutions Ltd | Information & communication | 2022 |
| Luer. Skin and Wellbeing Ltd | Other services | 2023 |
| Lugh & Paddy’S Limited | Hospitality | 2025 |
| Luke Thomas Property Partners Limited | Real estate | 2025 |
| Lumiere Photography Limited | Professional & scientific | 2002 |
| Lumina Studios Limited | Information & communication | 2014 |
| Lushington Ice Ltd | Wholesale & retail | 2025 |
| Luxe Beauty Group Limited | Wholesale & retail | 2025 |
| Luxe Build Interiors Limited | Construction | 2025 |
| Luxe Intimates Limited | Manufacturing | 2025 |
| LWB FX Ltd | Financial services | 2026 |
| LWM Traded Services Ltd | Other services | 2019 |
| Lxndr Technology Services Ltd | Information & communication | 2026 |
| Lyalvale Express Limited | Manufacturing | 1997 |
| Lycett Law Group LLP | | 2005 |
| Lyndsey Jayne Limited | Wholesale & retail | 2003 |
| Lyntus Limited | Construction | 2025 |
| Lyttleton Estates Limited | Real estate | 2023 |
| M & H Development Properties Limited | Construction | 2014 |
| M & M Construction Limited | Construction | 2003 |
| M & M Networking Solutions Limited | Information & communication | 2022 |
| M a Anderson Limited | Wholesale & retail | 2023 |
| M and I Domestic Appliances (Lichfield) Limited | Wholesale & retail | 1996 |