| Lifeisstyle Ltd | Wholesale & retail | 2024 |
| Lifschitz's Services Ltd | Other services | 2021 |
| Lift OFF Aviation Limited | Other services | 2025 |
| Liftoo Digital Ltd | Wholesale & retail | 2025 |
| Light and Happy Ltd | Real estate | 2017 |
| Light Oaks Food and Wine Ltd | Wholesale & retail | 2025 |
| Lightandcottons Ltd | Wholesale & retail | 2025 |
| Lightoaks Garage Limited | Wholesale & retail | 2007 |
| Lightstone Enterprises Ltd | Real estate | 2010 |
| Ligloma Ltd | Health & social care | 2023 |
| Ligmaveganbowls Ltd | Hospitality | 2024 |
| Like-Eagle Services Limited | Transport & logistics | 2010 |
| Likihas Ltd | Real estate | 2021 |
| Lilley Fitness Ltd | Arts & recreation | 2018 |
| Lilly Day Care Ltd | Health & social care | 2026 |
| Lilywhite Property Group Limited | Real estate | 2026 |
| Lima Group Holdings Limited | Professional & scientific | 2019 |
| Lima Networks Ltd | Information & communication | 1997 |
| Limani Holdings Ltd | Real estate | 2025 |
| Limbo Labs Ltd | Information & communication | 2026 |
| Lime Street PUB Nominees Ltd | Extraterritorial | 2022 |
| Lime Wealth Management Limited | Financial services | 2023 |
| Limecellhub Ltd | Wholesale & retail | 2025 |
| Limecrick Ltd | Extraterritorial | 2012 |
| Limecroft Investments Ltd | Real estate | 2024 |
| Limecroft Limited | Extraterritorial | 2016 |
| Limefield Holdings Ltd | Real estate | 2022 |
| Limestone Estates Limited | Real estate | 2021 |
| Limited Estates Ltd | Real estate | 2015 |
| Limitless GEN CIC | Health & social care | 2026 |
| Lincoln Locations Ltd | Information & communication | 2023 |
| Lind Investments Limited | Real estate | 2015 |
| Linden Estates Limited | Financial services | 1951 |
| Linden Lodge Developments Limited | Extraterritorial | 2000 |
| Linden Textiles Limited | Wholesale & retail | 1999 |
| Lindo Locums Ltd | Administrative & support | 2025 |
| Lindsayrads Limited | Hospitality | 2022 |
| Linear Supply Services Limited | Wholesale & retail | 2018 |
| Linear Supply Solutions (HQ) Limited | Wholesale & retail | 2019 |
| Linear Supply Solutions Limited | Wholesale & retail | 2013 |
| Linemount Limited | Extraterritorial | 1995 |
| Linen Wise Ltd | Wholesale & retail | 2020 |
| Ling Properties Limited | Real estate | 1988 |
| Link Construction Manchester Ltd | Administrative & support | 2014 |
| Linkar UKO Limited | Other services | 2025 |
| Linkhaven 2004 Ltd | Real estate | 2004 |
| Linkhaven Altrincham RD Ltd | Real estate | 2006 |
| Linkhaven Housing Ltd | Construction | 2006 |
| Linkhaven Ltd | Construction | 2001 |
| Links Plus Internationals Limited | Wholesale & retail | 2025 |
| Linkshill Limited | Administrative & support | 2023 |
| Linmere Limited | Real estate | 1990 |
| Linsoia Estates Limited | Real estate | 2025 |
| Lintree EST. Asset 1 Ltd | Real estate | 2021 |
| Lintree Estates Ltd | Financial services | 2021 |
| Lion & Commerce Ltd | Wholesale & retail | 2021 |
| Lion & Princess Investments Limited | Real estate | 2019 |
| Lion Management NW Ltd | Water & waste | 2023 |
| Liong Ltd | Administrative & support | 2025 |
| Lions Property Finance Ltd | Financial services | 2026 |
| Lionsguard Ltd | Real estate | 2024 |
| Liquimain Ltd | Construction | 2025 |
| Lisa DE Cunha Limited | Information & communication | 2025 |
| Lisa Logan Consulting Limited | Information & communication | 2023 |
| Lisa Logan Opera Projects Limited | Information & communication | 2024 |
| Lisa Poole Legal Limited | Professional & scientific | 2023 |
| Lisam Ventures Limited | Administrative & support | 2016 |
| Lisanto Limited | Real estate | 2018 |
| Lishkas Hasofrim Ltd | Professional & scientific | 2017 |
| Lishkat Hasoffer Ltd | Wholesale & retail | 2026 |
| Lissted Limited | Information & communication | 2015 |
| Lithium Identity Limited | Information & communication | 2026 |
| Little Blessings Childcare Limited | Health & social care | 2019 |
| Little City Nursery Ltd | Health & social care | 2026 |
| Little Dolls MCR Ltd | Health & social care | 2026 |
| Little Giggles MCR Ltd | Health & social care | 2026 |
| Little Legs Entertainment Limited | Arts & recreation | 2022 |
| Little People Playhouse Ltd | Health & social care | 2025 |
| Littleton Mini Market Limited | Wholesale & retail | 2024 |
| LIU Property Limited | Households | 2021 |
| Live Audacious | Other services | 2003 |
| Live Easy Ltd | Information & communication | 2021 |
| Liver Homes Development Ltd | Real estate | 2022 |
| Liverpool B1 Office Space Limited | Real estate | 2026 |
| Livestock Biotech Ltd | Agriculture & fishing | 2025 |
| Livexpo Holdings Limited | Financial services | 2024 |
| Liviant Ltd | Real estate | 2026 |
| Liyah Consultant Ltd | Professional & scientific | 2023 |
| Lizensk Kerestier Properties Limited | Real estate | 2018 |
| LJ Santos Consulting Ltd | Professional & scientific | 2026 |
| LK1 Limited | Administrative & support | 2025 |
| LKO Foods Ltd | Hospitality | 2022 |
| Llandudno Challenger Ltd | Extraterritorial | 2022 |
| Llandudno Estates Holdings Limited | Other services | 2020 |
| Llandudno Estates Holdings NO. 2 Limited | Other services | 2021 |
| Llandudno Estates Limited | Extraterritorial | 2021 |
| Llovit Luanna Ltd | Wholesale & retail | 2025 |
| Lloyd Latchford Group Limited | Financial services | 2006 |
| Lloyds Glass Balustrades Limited | Construction | 2011 |
| LM Lighting Ltd | Arts & recreation | 2024 |