| Liber Larus Ltd | Professional & scientific | 2020 |
| Liberate & Prosper Solutions Ltd | Real estate | 2024 |
| Liberate Wealth (Thornton) Limited | Financial services | 2014 |
| Liberate Wealth Solutions Limited | Financial services | 2010 |
| Libertas Accounting Ltd | Professional & scientific | 2017 |
| Liberton Development Ltd | Professional & scientific | 2021 |
| Liberton Holdings Limited | Financial services | 2022 |
| Liberton Property Ltd | Real estate | 2022 |
| Liberty Alliance International Ltd | Education | 2023 |
| Liberty Arts Productions CIC | Arts & recreation | 2022 |
| Liberty Christian Learning Centre CIC | Education | 2026 |
| Liberty INK Ltd | Other services | 2021 |
| Liberty Management Consultancy Limited | Professional & scientific | 2016 |
| Liberty Services and Lettings Limited | Real estate | 2016 |
| Libertévaleur Ltd | Professional & scientific | 2025 |
| Libra Care Services Ltd | Administrative & support | 2022 |
| Libran Rising Ltd | Hospitality | 2025 |
| Library Leeds Ltd | Hospitality | 2026 |
| Librium Games Ltd | Manufacturing | 2013 |
| LIC Prestige Estates Limited | Real estate | 2025 |
| Lida Professional Property Management Limited | Real estate | 2023 |
| Lidgett Lane Stores Ltd | Wholesale & retail | 2020 |
| Lidgett Management Limited | Households | 1993 |
| Lidgett Park Mews Residents Management Company Limited | Households | 1983 |
| Lidgett Pizzeria Leeds Limited | Hospitality | 2022 |
| Lidia Cleaners Ltd | Administrative & support | 2020 |
| Life Connections | Health & social care | 2010 |
| Life Elevated Ltd | Professional & scientific | 2025 |
| Life Experience Community Interest Company | Education | 2017 |
| Life Guide Lines Ltd | Professional & scientific | 2020 |
| Life Homes 14 Limited | Professional & scientific | 2005 |
| Life Homes 17 Limited | Professional & scientific | 2006 |
| Life Professional Care Ltd | Administrative & support | 2015 |
| Life Science Asset Management Limited | Professional & scientific | 2008 |
| Life Science Holdings Limited | Professional & scientific | 2008 |
| Life Without Lemons Ltd | Financial services | 2023 |
| Life's About Essentials Ltd | Wholesale & retail | 2018 |
| Lifecycle Construction Ltd | Professional & scientific | 2014 |
| Lifecycle Methologic Ltd | Manufacturing | 2014 |
| Lifehomes Developments Ltd | Construction | 2026 |
| Lifehouse Investments Ltd | Real estate | 2022 |
| Lifeplus Pro Ltd | Transport & logistics | 2025 |
| Lifescan Holding II Limited | Financial services | 2018 |
| Lifescan Holding Limited | Financial services | 2018 |
| Lifescan U.K. Limited | Health & social care | 2018 |
| Lifesky Properties Ltd | Real estate | 2022 |
| Lifestyle Dental and Implant Clinic Limited | Health & social care | 2019 |
| Lifestyle Psychiatry Healthcare Limited | Health & social care | 2026 |
| Lifetime Equity Release Limited | Financial services | 2019 |
| Lifetime Financial Responsibility Ltd | Professional & scientific | 2015 |
| Lifetime Group Limited | Financial services | 2020 |
| Lifetime Software Solutions Limited | Information & communication | 2020 |
| Lifetime Solutions Limited | Financial services | 2019 |
| Lifevalue Research Ltd | Education | 2025 |
| Lifeway Care Ltd | Health & social care | 2019 |
| Liffey Investments Limited | Administrative & support | 2018 |
| Lifi Infinity Limited | Information & communication | 2023 |
| Lifiaz Ltd | Real estate | 2019 |
| Lift Health and Fitness Ltd | Arts & recreation | 2023 |
| Lifted Ventures Limited | Professional & scientific | 2023 |
| Liftly CIC | Education | 2025 |
| Liftly Group Ltd | Financial services | 2025 |
| Liftspot Holdings Limited | Real estate | 2021 |
| Liftspot Limited | Real estate | 1988 |
| Ligera Limited | Information & communication | 2021 |
| Light Cafe Limited | Hospitality | 2025 |
| Light Joints Physiotherapy Ltd | Other services | 2024 |
| Light M S Services Limited | Construction | 2026 |
| Light Shop Direct Limited | Wholesale & retail | 2015 |
| Light Source Technology UK Ltd | Wholesale & retail | 1997 |
| Light Trading Ltd | Extraterritorial | 2024 |
| Light'N'Easy Appliances UK Limited | Wholesale & retail | 2015 |
| Lightabode Ltd | Real estate | 2021 |
| Lightabox Limited | Manufacturing | 2025 |
| Lightbox Content Agency Ltd | Professional & scientific | 2020 |
| Lightbox Productions Limited | Professional & scientific | 2021 |
| Lighthouse Education Trust | Education | 2011 |
| Lighthouse Futures Trust | Education | 2011 |
| Lighthouse Gold Group Ltd | Wholesale & retail | 2025 |
| Lighthouse Risk Services LLP | | 2007 |
| Lighting Craft Ltd | Wholesale & retail | 2019 |
| Lightning Lash Studio Ltd | Other services | 2021 |
| Lightning Protection (Leeds) Ltd | Construction | 2019 |
| Lightning Recovery (Yorkshire) Ltd | Transport & logistics | 2017 |
| Lightningcloud Consultancy Ltd | Information & communication | 2016 |
| Lights OUT Co (2023) Ltd | Wholesale & retail | 2023 |
| Lights OUT Consulting Ltd | Administrative & support | 2019 |
| Lightsonxp Ltd | Education | 2019 |
| Lightspeed Solutions Limited | Administrative & support | 1998 |
| Lightyear Design Ltd | Professional & scientific | 2022 |
| Liimra Medical Limited | Health & social care | 2025 |
| Lika Estate Rentals Limited | Real estate | 2020 |
| Lika Estates Limited | Construction | 2018 |
| Lika Holdings Limited | Financial services | 2021 |
| Like Car Finance Ltd | Financial services | 2014 |
| Lil's and Wil's Cafe Limited | Hospitality | 2026 |
| Lilac Alliance Ltd | Administrative & support | 2023 |
| Lilac House Group Ltd | Financial services | 2017 |
| Lilburn Estates Limited | Construction | 1984 |
| Liles BET Limited | Arts & recreation | 2012 |