| Linc Properties Ltd | Real estate | 2019 |
| Lincoln College (London) Limited | Education | 2009 |
| Lincoln College Ltd | Education | 2017 |
| Lincoln Notts Limited | Wholesale & retail | 2016 |
| Lincolnshire Health Care Limited | Health & social care | 2025 |
| Linda Wheeler Ltd | Education | 2024 |
| Lindale Holdings Limited | Health & social care | 2020 |
| Linden Court (Mill Hill) Freehold Company Limited | Other services | 2010 |
| Linden Court (Mill Hill) Property Management Co. Limited | Extraterritorial | 1969 |
| Linden LEA (Hatch END) Management Company Limited | Real estate | 1967 |
| Lindsey Clarke Design Limited | Arts & recreation | 2019 |
| Lindy Jones Associates Limited | Professional & scientific | 2020 |
| Line Concept Limited | Professional & scientific | 2015 |
| Linear Capital Ltd | Professional & scientific | 2018 |
| Linebase Limited | Professional & scientific | 2010 |
| Lineit Ltd | Construction | 2025 |
| Lingam Builders Ltd | Construction | 2026 |
| Lingam Estates Ltd | Real estate | 2025 |
| Lingam Property Limited | Real estate | 2021 |
| Linguasense Limited | Professional & scientific | 2008 |
| Linguatech Limited | Real estate | 1983 |
| Link Forex Ltd | Financial services | 2020 |
| Link Item Here Ltd | Wholesale & retail | 2023 |
| Link Location Limited | Real estate | 2021 |
| Linkplace Limited | Wholesale & retail | 1999 |
| Linkplus Limited | Information & communication | 1998 |
| Linksfield Holdings Ltd | Real estate | 2017 |
| Linkware Limited | Extraterritorial | 1997 |
| Linoffice Limited | Administrative & support | 2018 |
| Linora London Ltd | Manufacturing | 2026 |
| LIO Shining Ltd | Administrative & support | 2025 |
| Lionbridge Technologies Limited | Professional & scientific | 2000 |
| Lioncelle Films Limited | Information & communication | 2023 |
| Lionel AJV Limited | Professional & scientific | 2020 |
| Lionel Leventhal Limited | Information & communication | 1984 |
| Lioness Movies Limited | Information & communication | 2024 |
| Liongate Electronics Ltd | Information & communication | 2015 |
| Lionios Holdings Limited | Financial services | 2024 |
| Lionpoint Limited | Manufacturing | 1994 |
| Lionstone Homes Development LLP | | 2023 |
| Lipede Intelligence Limited | Information & communication | 2025 |
| Lips by Andreea Limited | Other services | 2021 |
| Liquid Logical Limited | Manufacturing | 2018 |
| Lisa's Helping Hands Ltd | Health & social care | 2025 |
| Lisdeligna Limited | Information & communication | 2008 |
| Lise Ltd | Information & communication | 2018 |
| Lisette Art Limited | Manufacturing | 2025 |
| Lissner Enterprises Limited | Information & communication | 2012 |
| Lita Builders Ltd | Construction | 2025 |
| Lita Paving & Patios Ltd | Administrative & support | 2024 |
| Litany Energy Services UK Limited | Professional & scientific | 2021 |
| Litconnect Technologies Ltd | Information & communication | 2023 |
| Lite Moves London Ltd | Real estate | 2019 |
| Lite Transport Services Ltd | Transport & logistics | 2026 |
| Liteflight Safety Ltd | Manufacturing | 2025 |
| Litel Property Ltd | Real estate | 2019 |
| Literally Limited | Information & communication | 2017 |
| Litnail Ltd | Wholesale & retail | 2021 |
| Litsa Estate Agents Ltd | Hospitality | 2024 |
| Little Black Book Music Limited | Arts & recreation | 2022 |
| Little Court Care Home Limited | Administrative & support | 2005 |
| Little Creative Industries Ltd | Professional & scientific | 2024 |
| Little Darling Childcare Limited | Health & social care | 2017 |
| Little Dinosaurs Enfield Limited | Arts & recreation | 2024 |
| Little Einsteins Nurseries Ltd | Health & social care | 2015 |
| Little Explorers Childcare Ltd | Health & social care | 2019 |
| Little Feet Ltd | Health & social care | 2023 |
| Little Garden Nursery Limited | Education | 2018 |
| Little Garden Nursery Northfield Limited | Education | 2025 |
| Little House Films Limited | Information & communication | 2024 |
| Little JEM Designs Limited | Manufacturing | 2006 |
| Little Joy Living Limited | Real estate | 2026 |
| Little Kitchen Help Ltd | Administrative & support | 2020 |
| Little Korea Tooting Limited | Hospitality | 2023 |
| Little Leaders Montessori Ltd | Education | 2016 |
| Little Leaders Nursery Ltd | Education | 2013 |
| Little Leaders Preschool Ltd | Education | 2016 |
| Little Leapers Ltd | Health & social care | 2022 |
| Little Metamorph Limited | Wholesale & retail | 2023 |
| Little Mongrel Productions Limited | Arts & recreation | 2020 |
| Little Snuggle Bugs Ltd | Health & social care | 2025 |
| Little Stars Islington Ltd | Arts & recreation | 2025 |
| Little Steps Day Care and Education Ltd | Health & social care | 2022 |
| Little White Cat Limited | Administrative & support | 2017 |
| Little Workshop (London) Limited | Wholesale & retail | 2008 |
| Little-Extra Ltd | Wholesale & retail | 2021 |
| Littleton Asset Management Ltd | Real estate | 2017 |
| Littleton Property Management Ltd | Real estate | 2021 |
| Liubang Ltd | Administrative & support | 2016 |
| Liva BIO UK Limited | Professional & scientific | 2026 |
| Live Data Development Ltd | Information & communication | 2015 |
| Live Well Psychology Limited | Health & social care | 2013 |
| Livefreenow PTE Ltd | Professional & scientific | 2024 |
| Livello Lifestyle Limited | Wholesale & retail | 2025 |
| Liverpool Live Radio Ltd | Information & communication | 2023 |
| Liveshop Limited | Wholesale & retail | 2021 |
| Livewell Architecture Ltd | Professional & scientific | 2020 |
| Livewell Property Ltd | Real estate | 2020 |
| Livewell Property Solutions GB Ltd | Real estate | 2025 |
| Livictus Limited | Financial services | 2020 |