| Learnaid Academy Ltd | Education | 2020 |
| Learnaid Childcare Club Limited | Education | 2022 |
| Learning Lighthouse Dyslexia Services Limited | Education | 2026 |
| Learning Professional UK Limited | Information & communication | 2016 |
| Lease of Life Estates Limited | Real estate | 2012 |
| Leather Centre Furniture Ltd | Manufacturing | 2016 |
| Leball Holdings UK Limited | Financial services | 2024 |
| Lebanese Shawarma Ltd | Hospitality | 2019 |
| Lebanese Shawarma Oldham Ltd | Hospitality | 2024 |
| LEC Decorating Ltd | Construction | 2025 |
| LED Property Ltd | Real estate | 2021 |
| LEE 1960 Limited | Extraterritorial | 2013 |
| LEE Booth Ltd | Construction | 2017 |
| LEE Brookes Ltd | Information & communication | 2018 |
| LEE Convenience Store Limited | Wholesale & retail | 2023 |
| LEE Group Property Transformers Ltd | Construction | 2024 |
| LEE HOO Ltd | Wholesale & retail | 2024 |
| LEE Povey Taxation Services Limited | Professional & scientific | 2018 |
| LEE Street Property Developments Ltd | Real estate | 2021 |
| Lee's Garage Ltd | Wholesale & retail | 2010 |
| Leech & Sharpe Joinery Ltd | Construction | 1987 |
| Leecomm (UK) Limited | Construction | 2014 |
| Leeds Business Centres Limited | Real estate | 2011 |
| Leela Limited | Real estate | 1995 |
| Leelawadee Ltd | Health & social care | 2026 |
| Lees Autos & Tyres Ltd | Wholesale & retail | 2026 |
| Lees Barbers Ltd | Other services | 2021 |
| Lees Brook Limited | Financial services | 2015 |
| Lees Commercial Finance Limited | Professional & scientific | 2013 |
| Lees Consultancy Ltd | Professional & scientific | 2019 |
| Lees Heginbotham & Sons Limited | Wholesale & retail | 1960 |
| Lees Lifting Equipment Limited | Other services | 2014 |
| Lees Mini Market Limited | Wholesale & retail | 2025 |
| Lees Village Service Station Ltd | Wholesale & retail | 2016 |
| Leesfield Developments Limited | Manufacturing | 2014 |
| Leesfield Developments NW Limited | Manufacturing | 2023 |
| Lee’S Deli Ltd | Hospitality | 2025 |
| Leftbank Property Management Ltd | Households | 2014 |
| Leg-Gats Limited | Hospitality | 2005 |
| Legacy Capital Limited | Hospitality | 2015 |
| Legacy Group Builds Limited | Construction | 2026 |
| Legacy Holdings (Manchester) Ltd | Financial services | 2017 |
| Legacy Realty Associates Ltd | Real estate | 2024 |
| Legal Case Management Solutions Ltd | Information & communication | 2026 |
| Legal Edge Consulting Ltd | Professional & scientific | 2025 |
| Legal Medical (NW) Limited | Professional & scientific | 2020 |
| Legend Barbers Oldham Limited | Other services | 2024 |
| Legends Volleyball C.I.C. | Education | 2024 |
| Lehatsenawa Ltd | Wholesale & retail | 2025 |
| Leicester Holdings Properties Limited | Extraterritorial | 2020 |
| Leighway Auto Electrics Limited | Wholesale & retail | 1999 |
| Leisure Club Ltd | Wholesale & retail | 2016 |
| Lemur Creative Limited | Manufacturing | 2018 |
| Lending Point UK Ltd | Professional & scientific | 2025 |
| Lenten Properties Limited | Real estate | 2025 |
| Leon AU Eyecare Ltd | Health & social care | 2011 |
| Leonard Toma Auto Shop Ltd | Manufacturing | 2022 |
| Leonie Occupational Therapy Limited | Health & social care | 2025 |
| Leorose Home Improvers Limited | Construction | 2020 |
| LES Group Holdings Ltd | Financial services | 2023 |
| Lester Energy Ltd. | Administrative & support | 2007 |
| Lester Letts Ltd | Real estate | 2022 |
| LET the Soul Whisper Limited | Professional & scientific | 2022 |
| Let's TRY Limited | Other services | 2017 |
| Lete Limited | Extraterritorial | 2018 |
| Lets Connect 24/7 Ltd | Administrative & support | 2025 |
| Lets GET Active Community Enterprise C.I.C. | Hospitality | 2018 |
| Letstech Limited | Information & communication | 2017 |
| Leuva Patidar Holding Ltd | Financial services | 2026 |
| Leuva Patidar Ltd | Hospitality | 2026 |
| Leuva Patidar Property Ltd | Real estate | 2026 |
| Level UP Lifts Ltd | Manufacturing | 2022 |
| Level UP North Ltd | Information & communication | 2025 |
| Level UP Tuition Group Limited | Health & social care | 2025 |
| Leverock Autos Ltd | Wholesale & retail | 2020 |
| Lewis Alderson & Co Limited | Wholesale & retail | 2008 |
| Lewis Alderson Logistics Limited | Extraterritorial | 2016 |
| Lewis Bulk Haulage Ltd | Transport & logistics | 2022 |
| Lewis J Designs Ltd | Manufacturing | 2022 |
| Lewis Taylor Limited | Construction | 2025 |
| Lewis White Reclaim Ltd | Construction | 2025 |
| LFN Peak Ltd | Wholesale & retail | 2024 |
| LG Construction and Property Maintenance Ltd | Households | 2025 |
| LGF Commercial Bodybuilders Limited | Manufacturing | 2017 |
| LGM Entertainment Limited | Administrative & support | 2026 |
| LGT Facilities Management Limited | Construction | 2018 |
| LGV1DRIVERS Ltd | Transport & logistics | 2021 |
| LH Flooring Ltd | Construction | 2017 |
| LH Recoverys 24/7 Ltd | Transport & logistics | 2025 |
| LHD Media Ltd | Professional & scientific | 2024 |
| LHE Installations Ltd | Construction | 2026 |
| LHH Freehold Limited | Households | 2015 |
| Lhkh Properties Ltd | Real estate | 2023 |
| Liberty TEX Limited | Wholesale & retail | 2026 |
| Liberty Tyre Recycling Ltd | Water & waste | 2026 |
| Liberum Corporate Services Limited | Administrative & support | 2016 |
| Library House Apartments (Frodsham) Ltd | Households | 2022 |
| Libre Technologies Ltd | Information & communication | 2022 |
| Lichfield Construction Limited | Construction | 1990 |
| Liddells Limited | Information & communication | 2019 |