| Laura Boulton Travel Ltd | Administrative & support | 2025 |
| Laura Paterson Limited | Professional & scientific | 2014 |
| LAVAZ88 Ltd | Manufacturing | 2018 |
| Law of the FEW Public Relations Limited | Professional & scientific | 2016 |
| Lawntreat Limited | Administrative & support | 2009 |
| Lawy Properties Limited | Real estate | 2026 |
| Layered Care C.I.C. | Professional & scientific | 2025 |
| LB Bookkeeping (UK) Ltd | Professional & scientific | 2011 |
| LB Electrical and Energy Limited | Construction | 2022 |
| LCB Group Ltd | Wholesale & retail | 2024 |
| Lclv Transport Ltd | Transport & logistics | 2018 |
| LDC Properties Limited | Real estate | 2019 |
| LDC Trading Limited | Wholesale & retail | 2016 |
| Ldmr Properties Limited | Real estate | 2024 |
| Leading Edge RA Services Ltd | Professional & scientific | 2020 |
| Leah Cleaning Solutions Limited | Administrative & support | 2024 |
| Leaksseal Ltd | Manufacturing | 2019 |
| Leakypixel Limited | Administrative & support | 2015 |
| Leannta Education Associates Limited | Information & communication | 1999 |
| Learn Bear Ltd | Education | 2026 |
| Leasepoint Vehicle Management Limited | Administrative & support | 2009 |
| LED Services Limited | Construction | 2016 |
| Leech Construction Services Limited | Construction | 2009 |
| Leese Ltd | Transport & logistics | 2023 |
| Leeson Holdings Limited | Professional & scientific | 1993 |
| Legacy Makers Limited | Information & communication | 2025 |
| Legend D Driving School Ltd | Education | 2025 |
| Legendary Waffles Ltd | Hospitality | 2018 |
| Leicester Investments (North West) Limited | Financial services | 2020 |
| Leicester-Warren Hall Company Limited (the) | Other services | 1968 |
| Leighmans.Com Ltd | Professional & scientific | 2003 |
| Leisure Surfaces (Cheshire) Limited | Construction | 2002 |
| Leisurechain Limited | Arts & recreation | 1995 |
| Lensmate Media Ltd | Information & communication | 2022 |
| Leodin Limited | Financial services | 1976 |
| Lerie's Signature Ltd | Other services | 2025 |
| LES & Michelle at the Horseshoe Limited | Hospitality | 2013 |
| Let's DO Ltd | Other services | 2017 |
| Letts Rents Limited | Administrative & support | 2013 |
| Let’S GET Plastered (Cheshire) Ltd | Construction | 2022 |
| Lewbiroo Limited | Professional & scientific | 2018 |
| Lewis Thompson Limited | Professional & scientific | 2013 |
| Leyland Acres Ltd | Financial services | 2024 |
| LG Travel Limited | Administrative & support | 2020 |
| LGD Accountancy Ltd | Education | 2014 |
| LH Sports Coaching Limited | Arts & recreation | 2017 |
| Lhmz Investments Limited | Construction | 2020 |
| Liam Grocery Shop Ltd | Wholesale & retail | 2023 |
| Lidos (Crewe) Ltd | Wholesale & retail | 2022 |
| Life Simply Travelled Limited | Administrative & support | 2024 |
| Life the Dream Limited | Other services | 2025 |
| Liferafts and Inflatables Limited | Manufacturing | 1970 |
| Lifestyle Attraction Limited | Wholesale & retail | 2020 |
| Lifestyle Market Limited | Professional & scientific | 2014 |
| Lifestyle Services Group Limited | Financial services | 2004 |
| Lifewing Consultants Limited | Financial services | 1987 |
| Light Hand of Grace Services Ltd | Construction | 2016 |
| Lighthouse Invest Limited | Real estate | 2019 |
| Lighthouse UK Consultancy Ltd | Professional & scientific | 2018 |
| Lightwood Motors Ltd | Wholesale & retail | 2022 |
| Likelylets Ltd | Real estate | 2026 |
| Likewize Device Protection UK Limited | Financial services | 2022 |
| Likewize Digital Care Limited | Financial services | 2025 |
| Likewize Limited | Extraterritorial | 2026 |
| Likewize Lucid CX Limited | Information & communication | 2004 |
| Likewize Repair Limited | Extraterritorial | 2024 |
| Likewize Services UK Limited | Information & communication | 2013 |
| LIL Eden Limited | Wholesale & retail | 2012 |
| Lily Farm Developments Limited | Construction | 2008 |
| Lindon Properties Limited | Real estate | 2024 |
| Link Central (Holdings) Limited | Professional & scientific | 2010 |
| Linsey Kerr Limited | Extraterritorial | 1983 |
| LIP Aesthetics and Training Academy Ltd | Education | 2019 |
| Litke Wood Bookkeeping Solutions Limited | Professional & scientific | 2016 |
| Little & Large Cheshire Ltd | Wholesale & retail | 2023 |
| Little & Large Driveways Ltd | Administrative & support | 2024 |
| Little by Little Renovations Ltd | Manufacturing | 2022 |
| Little Coast Company Limited | Information & communication | 2026 |
| Little Gems Childminding (Crewe) Ltd | Education | 2026 |
| Little PEA Play Cafe Limited | Hospitality | 2025 |
| Little Red Ruby Ltd | Wholesale & retail | 2009 |
| Little Steps (West Street) Limited | Education | 2014 |
| Little Voices Therapy Ltd | Health & social care | 2026 |
| Littlegala Ltd | Hospitality | 2024 |
| Littlehempston Flair Ltd | Hospitality | 2014 |
| Littler Investments Limited | Real estate | 1965 |
| Littleton Holdings Limited | Construction | 2000 |
| Liveer Ltd | Hospitality | 2025 |
| Living & Letting Limited | Real estate | 2018 |
| Living Colour Lady Decorators Ltd | Construction | 2017 |
| Living Pasture Ltd | Agriculture & fishing | 2026 |
| Livingstone Finance UK Limited | Construction | 2008 |
| Livzak Ltd | Transport & logistics | 2022 |
| Liya Test UK Limited | Professional & scientific | 2025 |
| LIZ Scott PR & Marketing Limited | Information & communication | 2011 |
| LJ Industrial Ltd | Wholesale & retail | 2017 |
| LJ Prestige Ltd | Wholesale & retail | 2021 |
| LJC Accountancy Services Limited | Professional & scientific | 2009 |
| LJM Roofing Ltd | Construction | 2025 |
| LJW Installations Ltd | Construction | 2025 |