| Leiths Roadstone Limited | Professional & scientific | 1995 |
| Leiths Surfacing Limited | Construction | 1986 |
| Lela Aberdeen Ltd | Health & social care | 2025 |
| Lemmilaid LP | | 2014 |
| Lemmond Terner LP | | 2015 |
| Lemuria Enterprises Limited | Real estate | 1998 |
| Lemurian Estates Limited | Real estate | 2014 |
| Lendl Group Limited | Professional & scientific | 2019 |
| Lennart Impex LP | | 2012 |
| Leohills UK Ltd | Wholesale & retail | 2021 |
| Leopard Developments Limited | Construction | 2023 |
| Leopard Residential Management Limited | Real estate | 2024 |
| LER Logistics (SCO) Ltd | Transport & logistics | 2017 |
| Leroy & Walley LP | | 2012 |
| LES J Anderson Limited | Construction | 2008 |
| LET and Sales Logistics Services Ltd | Real estate | 2024 |
| Letham Piping Solutions Ltd | Construction | 2025 |
| Lethendy Bolton Limited | Hospitality | 2018 |
| Lethendy Elstree Limited | Hospitality | 2018 |
| Lethendy Estates Limited | Professional & scientific | 2018 |
| Lethendy Stoke-On-Trent Limited | Hospitality | 2018 |
| Lethendy Trading Limited | Professional & scientific | 2018 |
| Lethenty Cabinetmakers Ltd. | Manufacturing | 2005 |
| Letts & Co. Limited | Real estate | 2003 |
| Letts & Co. Properties Limited | Real estate | 2018 |
| Let’S DO Shots Photography Ltd | Professional & scientific | 2022 |
| LEV Lions Ltd | Construction | 2019 |
| Levalla Ltd | Wholesale & retail | 2025 |
| Level 3 Inspection Services Limited | Professional & scientific | 2016 |
| Level Offshore UK Limited | Professional & scientific | 2018 |
| Levelling UP Real Estate Ltd | Administrative & support | 2022 |
| Lewban Solutions Ltd | Professional & scientific | 2015 |
| Lewis Foods LP | | 2013 |
| Lewis Will Flooring Ltd | Construction | 2024 |
| Lewtech Solutions Ltd | Wholesale & retail | 2025 |
| LEX Consulting Services Limited | Professional & scientific | 2019 |
| Lexcal Property Ltd | Construction | 2020 |
| Lexvanta Ltd | Professional & scientific | 2026 |
| LF Gutter Services Ltd | Administrative & support | 2025 |
| LFL Fitness Limited | Arts & recreation | 2017 |
| LGA Draught & Design Ltd | Administrative & support | 2022 |
| LGA Wonderful Ltd | Hospitality | 2024 |
| LGF Marine Electrical Ltd | Manufacturing | 2024 |
| LGM (Aberdeen) Ltd. | Professional & scientific | 2024 |
| Lgps Central Alternatives Master Pooling Partnership LP | | 2018 |
| Lgps Central Core/Core Plus Infrastructure Partnership LP | | 2020 |
| Lgps Central Credit Partnership I LP | | 2021 |
| Lgps Central Credit Partnership II LP | | 2021 |
| Lgps Central Credit Partnership III LP | | 2021 |
| Lgps Central Credit Partnership IV LP | | 2021 |
| Lgps Central GP LLP | | 2018 |
| Lgps Central Infrastructure Co-Investments Partnership 2025 LP | | 2021 |
| Lgps Central Infrastructure Single Asset Partnership LP | | 2021 |
| Lgps Central Infrastructure Value ADD Partnership 2026 LP | | 2026 |
| Lgps Central PE Co-Investments Partnership 2018 LP | | 2018 |
| Lgps Central PE Co-Investments Partnership 2021 LP | | 2021 |
| Lgps Central PE Co-Investments Partnership 2025 LP | | 2025 |
| Lgps Central PE Primary Partnership 2018 LP | | 2018 |
| Lgps Central PE Primary Partnership 2021 LP | | 2021 |
| Lgps Central PE Primary Partnership 2023 LP | | 2023 |
| Lgps Central PE Primary Partnership 2025 LP | | 2025 |
| Lgps Central PE Secondary Partnership 2025 LP | | 2026 |
| Lgps Central Private Credit Direct Lending Partnership 2024 LP | | 2024 |
| Lgps Central Private Credit Real Asset Partnership 2024 LP | | 2024 |
| Lgps Central Residential Indirect Property Partnership LP | | 2023 |
| Lgps Central Value Add/Opportunistic Infrastructure Partnership LP | | 2020 |
| Lgps Central Venture Partnership 2026 LP | | 2026 |
| LH Pipefitting Ltd | Manufacturing | 2024 |
| LH UK Engineering Solutions Limited | Administrative & support | 2014 |
| LHR Marine Limited | Wholesale & retail | 2000 |
| LHW Services Limited | Transport & logistics | 2025 |
| Li's Oriental Limited | Hospitality | 2022 |
| Liam Robertson Ltd | Arts & recreation | 2025 |
| Libereat Limited | Information & communication | 2016 |
| Libertas Veritas Limited | Professional & scientific | 2012 |
| Liberty Drilling Equipment UK Ltd | Administrative & support | 2010 |
| Liberty GR Foreign Holding Company I, L.P. | | 2016 |
| Liberty GR Foreign Holding Company II, L.P. | | 2016 |
| Liberty Resources Consulting Ltd | Mining & quarrying | 2024 |
| Licence Holding Ltd | Extraterritorial | 2021 |
| Licholding Limited | Real estate | 2015 |
| Lidia DE Sousa Limited | Health & social care | 2007 |
| Lienergen Ltd | Professional & scientific | 2024 |
| Life Counselling Ltd | Health & social care | 2018 |
| Lifebridge Healthcare Services Ltd | Health & social care | 2023 |
| Lifecommunications Ltd | Information & communication | 2020 |
| Lifeline Universal Services Ltd | Public administration | 2025 |
| Lifestyle Properties (Aberdeen) Limited | Real estate | 1994 |
| Lifetech Engineering Ltd | Professional & scientific | 2012 |
| Lifetech Properties Ltd | Real estate | 2025 |
| Lifetime Property Services Ltd | Construction | 2025 |
| Lift ALL Ltd | Construction | 2019 |
| Lifting Equipment Rental Limited | Administrative & support | 1991 |
| Liftspec Ltd | Mining & quarrying | 2022 |
| Light Burger Ltd | Hospitality | 2026 |
| Light-Fab Engineering Ltd. | Manufacturing | 2001 |
| Lightbulb.Coach Ltd | Professional & scientific | 2022 |
| Ligna&Co Limited | Professional & scientific | 2020 |
| Like IT Equine Limited | Manufacturing | 2022 |
| LIL Marketing Co Ltd | Professional & scientific | 2025 |