| Leeds Road Shawarma Ltd | Hospitality | 2025 |
| Leeds Skip Hire Ltd | Water & waste | 2018 |
| Leeds Therapy Hub CIC | Health & social care | 2024 |
| Leeds VU (Pudsey) Limited | Real estate | 2014 |
| Leeds, York and North Yorkshire Chamber of Commerce and Industry | Administrative & support | 1880 |
| Leedsjc Ltd | Manufacturing | 2023 |
| Leedswindows.Com Ltd | Construction | 2021 |
| Leema Nibbles Ltd | Hospitality | 2025 |
| Leepa Valley Ltd | Wholesale & retail | 2024 |
| Lees Nags Head Ltd | Hospitality | 2021 |
| Leesun Properties Ltd | Real estate | 2018 |
| Leezay Fashion Limited | Wholesale & retail | 2017 |
| Lefteris Limited | Hospitality | 2020 |
| Legacy Living Furniture Ltd | Wholesale & retail | 2025 |
| Legacy Plates Ltd | Manufacturing | 2026 |
| Legacy Print Solutions Ltd | Other services | 2019 |
| Legacy Resolve Limited | Other services | 2025 |
| Legacy Truck and Trailer Care Ltd | Wholesale & retail | 2024 |
| Legal Admin Services Ltd | Administrative & support | 2026 |
| Legal Assistance Direct Ltd | Professional & scientific | 2017 |
| LEGAL365.COM Limited | Professional & scientific | 2010 |
| Legata Holdings Limited | Financial services | 2025 |
| Legata Properties Limited | Real estate | 2025 |
| Legend Bites Limited | Hospitality | 2023 |
| Legend Building Ltd | Extraterritorial | 2021 |
| Legend Cafe 1 Ltd | Hospitality | 2025 |
| Legend Landmarks Ltd | Financial services | 2025 |
| Legramms Two Limited | Hospitality | 2024 |
| Lele C Ltd | Manufacturing | 2026 |
| Lelliotts Taverns Limited | Hospitality | 2024 |
| Lemingtons Limited | Transport & logistics | 2024 |
| Lemon Club Limited | Hospitality | 2025 |
| Lencarta Ltd | Manufacturing | 2006 |
| Lensam Enterprises Limited | Hospitality | 2011 |
| Lenun Ltd | Arts & recreation | 2021 |
| LEO Edge Limited | Professional & scientific | 2025 |
| LEO Food Store Ltd | Wholesale & retail | 2018 |
| LEO Spice HUT Ltd | Hospitality | 2023 |
| LEO Trader Limited | Health & social care | 2010 |
| LEO Transport Services Ltd | Transport & logistics | 2022 |
| Leodis Financial Ltd | Financial services | 2015 |
| Leon Winder Interiors Ltd | Wholesale & retail | 2020 |
| Leon Yorkshire Ltd | Wholesale & retail | 2023 |
| Leona Residential Limited | Real estate | 2023 |
| Leonard Blinds Specialists Limited | Construction | 2018 |
| Leonard Flooring Specialists Limited | Construction | 2013 |
| Leopold Wise Solicitors Limited | Professional & scientific | 2017 |
| LES Williams Ltd | Construction | 2025 |
| Lesica Prosthodontic Services Limited | Health & social care | 2024 |
| Lesley's Leisure Ltd | Hospitality | 2024 |
| Lesters 1981 Limited | Hospitality | 2022 |
| LET There BE Tech Ltd | Information & communication | 2018 |
| Let's Talk Relationships Ltd | Health & social care | 1991 |
| Letfix and Chill Property Management Limited | Real estate | 2024 |
| Leticia's Limited | Health & social care | 2020 |
| Lets Build BFD Limited | Construction | 2023 |
| Lets Care Together (LCT) Ltd | Health & social care | 2025 |
| Lets Grill IT Ltd | Hospitality | 2021 |
| Lets Grill Ltd | Hospitality | 2025 |
| Letz Move Lettings Limited | Households | 2020 |
| Letz Move Limited | Households | 2019 |
| Letz Talk Ltd | Other services | 2017 |
| Level Construct Ltd | Construction | 2025 |
| Level UP Innovations Limited | Construction | 2026 |
| Level UP Supported Living Limited | Health & social care | 2024 |
| Level UP Trading Ltd | Administrative & support | 2021 |
| LEVEL3RECYCLING Limited | Information & communication | 2011 |
| Levenhulme Holdings Limited | Professional & scientific | 2025 |
| Levy Drywall & Ceiling Ltd | Construction | 2018 |
| Lewis & Co Developments Ltd | Construction | 2023 |
| Lewis Robertshaw (Upwood) Limited | Agriculture & fishing | 1957 |
| LEX Counsel Limited | Information & communication | 2025 |
| LEX Scripta Ltd | Professional & scientific | 2025 |
| Lexis Solicitors Ltd | Professional & scientific | 2021 |
| Lexley Global Ltd | Administrative & support | 2025 |
| Lexmere Limited | Real estate | 2025 |
| Lezac Limited | Public administration | 2023 |
| Lezzetli Limited | Hospitality | 2023 |
| LFA Commercials Ltd | Real estate | 2023 |
| LFB Group UK Limited | Manufacturing | 1996 |
| LFB Industries UK | Manufacturing | 1960 |
| LFD Professionals Limited | Hospitality | 2014 |
| Lfsf Ltd | Wholesale & retail | 2019 |
| Lfuk Limited | Manufacturing | 2019 |
| LGS Automotive Ltd | Wholesale & retail | 2020 |
| LH Auto Parts Ltd | Wholesale & retail | 2025 |
| LH Cars & Commercials Limited | Wholesale & retail | 2023 |
| Lhakpa and Sons Ltd | Real estate | 2024 |
| Lheure Dodo Ltd | Manufacturing | 2026 |
| LHM Properties Limited | Real estate | 2025 |
| Liam Jagger Consulting Ltd | Professional & scientific | 2020 |
| Libas-E-Khas Ltd | Wholesale & retail | 2019 |
| Liberta Care Solutions Ltd | Extraterritorial | 2016 |
| Liberta Imex Limited | Extraterritorial | 1944 |
| Libertas Legal Ltd | Professional & scientific | 2023 |
| Libertes Hair & Beauty Ltd | Other services | 2018 |
| Liberty Ecommerce Ltd | Wholesale & retail | 2026 |
| Liberty FX Ltd | Administrative & support | 2025 |
| Liberty Homes Housing Association Ltd | Real estate | 2015 |
| Liberty Mobility Aids Ltd | Wholesale & retail | 2025 |