| LCC Wholesale Ltd | Wholesale & retail | 2025 |
| LCG Engineering Ltd. | Wholesale & retail | 2022 |
| Lcr-Automotive Ltd | Wholesale & retail | 2019 |
| LCS Autos Ltd | Wholesale & retail | 2025 |
| LD Property Stoke Limited | Real estate | 2025 |
| LDA Electrical Services Ltd | Construction | 2022 |
| LDP 50 Limited | Real estate | 2024 |
| LDR Welding Limited | Professional & scientific | 2020 |
| LDS Trading Ltd | Wholesale & retail | 2025 |
| LDX Solutions Ltd | Manufacturing | 2025 |
| LE Café Riche Ltd | Manufacturing | 2025 |
| LE Specialist Cleaning Ltd | Administrative & support | 2026 |
| LEA Forge Self-Store Ltd | Transport & logistics | 2022 |
| Lead Genie Limited | Financial services | 2016 |
| Lead Genius Digital Marketing Limited | Professional & scientific | 2025 |
| Leadbeater and KAY Solicitors Limited | Professional & scientific | 2015 |
| Leaders by Nature Ltd | Wholesale & retail | 2009 |
| Leadout Consulting Limited | Arts & recreation | 2011 |
| Leadseed Solutions Ltd | Professional & scientific | 2025 |
| Leaflets Limited | Administrative & support | 2010 |
| Leafy Delights Ltd | Hospitality | 2024 |
| Leafy Green Energy Ltd | Construction | 2005 |
| Leafy Lunches Ltd | Wholesale & retail | 2022 |
| Leahvor Ltd | Wholesale & retail | 2026 |
| Lean & Green Limited | Wholesale & retail | 2017 |
| Learnjoy Limited | Professional & scientific | 2009 |
| Lease Leads Ltd | Administrative & support | 2010 |
| Lease Link Ltd | Real estate | 2024 |
| Leaseback Capital Partners Ltd | Real estate | 2025 |
| Leatherog Ltd | Wholesale & retail | 2026 |
| Lecce (South East) Limited | Real estate | 2026 |
| LED Consulting Limited | Information & communication | 2015 |
| LED Creative Solutions Ltd | Wholesale & retail | 2018 |
| Ledbrook (DS) Ltd | Real estate | 2021 |
| Ledgify Limited | Professional & scientific | 2025 |
| Ledson Business Services Limited | Administrative & support | 2023 |
| LEE Hair Brand Ltd | Other services | 2024 |
| LEE P Taylor Holdings Ltd | Real estate | 2025 |
| LEE Towey Joinery Limited | Construction | 2007 |
| LEE Wain Golf Ltd | Arts & recreation | 2024 |
| LEE White Ducting Limited | Construction | 2021 |
| Leek Oak Limited | Extraterritorial | 2016 |
| Leese Properties Ltd | Real estate | 2025 |
| Legacy Housing Management Limited | Real estate | 2023 |
| Legacy Lettings & Developments Ltd | Real estate | 2025 |
| Legal Costs Recovery Limited | Extraterritorial | 2019 |
| Legal Funding Group Limited | Financial services | 2026 |
| Legalhelpers Limited | Professional & scientific | 2000 |
| Legendry Creation Ltd | Wholesale & retail | 2026 |
| Legion Parfums Limited | Wholesale & retail | 2024 |
| Legogeko Ltd | Wholesale & retail | 2024 |
| Legsland Ltd | Wholesale & retail | 2025 |
| Leicester Spas & Hot Tubs Limited | Professional & scientific | 2004 |
| Leigh Peach Construction Ltd | Extraterritorial | 2016 |
| Leighbeck Electrical Ltd | Construction | 2023 |
| Leisure Product Imports Ltd | Wholesale & retail | 2026 |
| Lekkerhr Ltd | Administrative & support | 2023 |
| Lemonade Designs Limited | Arts & recreation | 2016 |
| Lemondog Limited | Extraterritorial | 2016 |
| LEN Foster Media Ltd | Education | 2021 |
| Leon International Ltd | Wholesale & retail | 2025 |
| Lepa Trans Ltd | Transport & logistics | 2020 |
| Lerakoma Ltd | Professional & scientific | 2011 |
| Lerakoma Properties Limited | Real estate | 2017 |
| LES Amis DE Bulungu Pour SON Developpement (ABD) C.I.C. | Administrative & support | 2021 |
| Lesniak Swann Ltd. | Professional & scientific | 2002 |
| Less Travelled Lamb Limited | Agriculture & fishing | 2020 |
| LET US Connect Limited | Information & communication | 2022 |
| Let's Gift Something Ltd | Wholesale & retail | 2021 |
| Let's Throw a Party Ltd | Administrative & support | 2018 |
| LET365CO Limited | Real estate | 2011 |
| Letasi E PVT Ltd | Health & social care | 2022 |
| Lethargic Chinchilla Ltd | Information & communication | 2025 |
| Letlilo Limited | Real estate | 2025 |
| Letrev Ltd | Hospitality | 2025 |
| Lets Move Fast Ltd | Real estate | 2024 |
| Lets Move Home (UK) Ltd | Real estate | 2012 |
| Lettable Ltd | Real estate | 2019 |
| Levbec LLP | | 2013 |
| Level SET Construction Limited | Construction | 2018 |
| Levora Homes Ltd | Hospitality | 2024 |
| Lewasavu Enterprise Ltd | Construction | 2025 |
| Lewis Transport Services Limited | Transport & logistics | 1987 |
| Lewisham Recruitment Limited | Administrative & support | 2023 |
| LEX Create Ltd | Information & communication | 2016 |
| LEX Precision Engineering Ltd | Professional & scientific | 2018 |
| Lexadeen Solicitors Limited | Professional & scientific | 2013 |
| Lexis Holdings Ltd | Real estate | 2024 |
| Lexos Corporation Ltd. | Wholesale & retail | 2025 |
| LEY Croft Management Company Limited | Households | 2021 |
| Leyland Developments Ltd | Real estate | 2025 |
| Leytoner DE Montfort Limited | Manufacturing | 1962 |
| LF Group Enterprises Ltd | Financial services | 2025 |
| LFG Electrical Ltd | Construction | 2014 |
| LFG Property Ltd | Real estate | 2024 |
| LFM Stoke Limited | Construction | 2014 |
| LFS Holdings (SOT) Limited | Financial services | 2023 |
| LFX Healthcare Ltd | Health & social care | 2020 |
| LG Accountancy Limited | Professional & scientific | 2015 |
| LG Innovative Building Limited | Construction | 2017 |