| Lavande Property Ltd | Construction | 2026 |
| Lavender Enterprises Ltd | Professional & scientific | 2012 |
| Lawn's in Limited | Administrative & support | 2024 |
| Lawyers Online (UK) Ltd | Information & communication | 1998 |
| Layer 8 Strategies Limited | Information & communication | 2026 |
| Lays Farm Residents Company Limited | Administrative & support | 1988 |
| Layton & Powell Electrical Limited | Energy | 1998 |
| Lazer Flooring Limited | Construction | 2004 |
| LC Pudge Limited | Real estate | 2023 |
| LDP Engineering Limited | Manufacturing | 2010 |
| Leach's Ltd | Extraterritorial | 2007 |
| Leada Architectural Ltd | Professional & scientific | 2017 |
| Leading Edge Turbines Limited | Manufacturing | 2009 |
| LEARN2BURN Ltd | Professional & scientific | 2020 |
| Learning Field Limited | Information & communication | 2004 |
| Learning for Leaders (Europe) Ltd | Other services | 2022 |
| Learning for Leaders (UK) Limited | Other services | 2013 |
| Learning Support Partnership Ltd | Education | 2014 |
| Leaven Pizza (Hereford) Limited | Hospitality | 2023 |
| Ledbury Carpets Ltd | Wholesale & retail | 2018 |
| Ledbury Construction & Groundworks Ltd | Construction | 2016 |
| Left View Ltd | Real estate | 2026 |
| Legal and Health Consultancy Ltd | Other services | 2023 |
| Legalpsych Ltd | Health & social care | 2025 |
| Legge Contracting Ltd | Construction | 2005 |
| Leighton Buzzard PT Gym Ltd | Arts & recreation | 2025 |
| Lelantos Solutions Ltd | Administrative & support | 2018 |
| Lelu Capital Ltd | Real estate | 2018 |
| Lelu Consulting Ltd | Professional & scientific | 2018 |
| Lemaitre Vascular Limited | Manufacturing | 2015 |
| Leman Partners Ltd | Financial services | 2023 |
| Lemur Associates Ltd | Administrative & support | 2022 |
| Lengvarsky Limited | Real estate | 2021 |
| Lens Light Ltd | Information & communication | 2022 |
| LEO T & T (HFD) Limited | Transport & logistics | 2020 |
| Leominster Oak & Timber Framing Ltd | Construction | 2022 |
| Leominster Pet Centre Limited | Wholesale & retail | 2005 |
| Leominster Travel Ltd | Transport & logistics | 2017 |
| Leonard Construction Business Ltd | Manufacturing | 2025 |
| Leonard Property Apartments Ltd | Real estate | 2016 |
| Leonard Property Consulting Ltd | Professional & scientific | 2015 |
| Leonard Property Group Ltd | Financial services | 2018 |
| Leonard Property Holdings Ltd | Real estate | 2016 |
| Leonard Residential Ltd | Real estate | 2020 |
| Leopardo's Pizza Limited | Hospitality | 2024 |
| Lera Lettings Ltd | Real estate | 2020 |
| LES Morgan & SON Plant Hire Ltd | Transport & logistics | 2007 |
| Leslie Addy Controls Ltd | Professional & scientific | 2020 |
| Level Bathrooms and Plumbing Ltd. | Construction | 2014 |
| Level Peaks Associates Ltd | Wholesale & retail | 2007 |
| Level Peaks Clothing Limited | Extraterritorial | 2011 |
| Level Peaks Holdings Limited | Financial services | 2016 |
| Level UP Hair and Beauty Ltd | Other services | 2025 |
| Levengrove Asset Management Ltd | Financial services | 2020 |
| Lewis Contracting Ltd. | Construction | 1999 |
| LFE VAT Consultancy Limited | Professional & scientific | 2021 |
| LG Dent Ltd | Health & social care | 2025 |
| LHM Property Limited | Real estate | 2025 |
| Liberation London LLP | | 2022 |
| Libran Ltd | Other services | 2012 |
| Library View Apartments Management Company Ltd | Hospitality | 2016 |
| Licensed Solutions Ltd | Professional & scientific | 2002 |
| Lichfield Gateway Ltd | Real estate | 2025 |
| Lifeline Consultancy Limited | Professional & scientific | 2005 |
| Lift Properties Ltd | Real estate | 2024 |
| Lifting & Mechanical Services Ltd | Professional & scientific | 2020 |
| Liftwell Ltd. | Extraterritorial | 1996 |
| Liftwell Production Limited | Manufacturing | 1995 |
| Lighthouse Assets Ltd | Real estate | 2016 |
| Lighthouse Healthcare Solutions Limited | Wholesale & retail | 2019 |
| Likeprod Engineers Limited | Financial services | 1961 |
| Limbco Limited | Wholesale & retail | 2019 |
| Limegreen Marketing Limited | Administrative & support | 2017 |
| Limitless Employment Ltd | Education | 2023 |
| Limitless Mentoring Ltd | Education | 2023 |
| Limitless Warehouse Ltd | Wholesale & retail | 2023 |
| Limmifi Holdings Ltd | Financial services | 2024 |
| Linear Financial Management Ltd | Financial services | 2020 |
| Lingen Properties Limited | Construction | 2024 |
| Lingwood Hospitality Ltd | Hospitality | 2025 |
| Linic Healthcare Ltd | Transport & logistics | 2022 |
| Link Labs Digital PR Ltd | Professional & scientific | 2024 |
| Link U K - M & P Davies Limited | Wholesale & retail | 2002 |
| Linksbest Limited | Real estate | 2000 |
| Linktenure Property Management Limited | Real estate | 1995 |
| Linton Electronics and Engineering Limited | Manufacturing | 2021 |
| Linton Motor Services Ltd | Wholesale & retail | 2013 |
| Linwood Consultants Limited | Financial services | 2015 |
| Lion Heart Response Services Ltd | Wholesale & retail | 2022 |
| Lisinnes Ltd | Hospitality | 2022 |
| List and Tally Ltd | Professional & scientific | 2021 |
| Listed Ltd | Wholesale & retail | 2026 |
| Litabix Ltd | Administrative & support | 2023 |
| Litchfield Lodge Management Limited | Households | 1991 |
| Litley Court Estate Management Company Limited | Households | 1998 |
| Litley Court House Management Company Limited | Households | 1998 |
| Littglos Limited | Professional & scientific | 2009 |
| Little Adam Limited | Health & social care | 2019 |
| Little Barn Hydrotherapy Limited | Arts & recreation | 2016 |
| Little Barn Tillington Ltd | Hospitality | 2021 |