| Liftex Group Limited | Financial services | 2024 |
| Light House Apex Limited | Information & communication | 2026 |
| Light Space Property Ltd | Households | 2022 |
| Light TAP Ltd | Wholesale & retail | 2022 |
| Lightning Recycling Ltd | Water & waste | 2020 |
| LIL Ballers Slough Ltd | Arts & recreation | 2025 |
| Lila Creations Ltd | Arts & recreation | 2025 |
| Liliana Impex Limited | Transport & logistics | 2020 |
| Lilly and Zaman Group Ltd | Hospitality | 2023 |
| Lily Havens Properties Ltd | Administrative & support | 2023 |
| Lilylisa Limited | Wholesale & retail | 2009 |
| LIM Junye Ltd | Hospitality | 2019 |
| Lime Blue Innovation Limited | Professional & scientific | 2000 |
| Limitless Abundance Ltd | Wholesale & retail | 2024 |
| Limitless Invest Ltd | Financial services | 2021 |
| Limore Limited | Wholesale & retail | 2021 |
| Limra UK Limited | Information & communication | 2009 |
| Limton Security Services UK Limited | Administrative & support | 2018 |
| LIN Express Ltd | Transport & logistics | 2026 |
| Lincfix Ltd | Information & communication | 2020 |
| Lincoln Cargo Ltd | Transport & logistics | 2015 |
| Lindash Enterprise Limited | Health & social care | 2021 |
| Linear Architecture and Design Ltd | Professional & scientific | 2025 |
| Lines Group London Ltd | Construction | 2020 |
| Lingo’S Landscaping Ltd | Professional & scientific | 2024 |
| Link Commercial Investments Limited | Real estate | 2021 |
| Link Engagement Ltd | Professional & scientific | 2019 |
| Link Logistics Limited | Transport & logistics | 2026 |
| Link Marketing Ltd | Administrative & support | 2019 |
| Link Sourcing Limited | Wholesale & retail | 2019 |
| Link Transit Services Ltd | Transport & logistics | 2023 |
| Link Transport Group Ltd | Transport & logistics | 2025 |
| Linking Security Limited | Extraterritorial | 2022 |
| Linkx AI Ltd | Information & communication | 2021 |
| Linsol Ltd | Information & communication | 2015 |
| Linvex Solutions Limited | Information & communication | 2026 |
| Lion & Lioness Group Ltd | Wholesale & retail | 2021 |
| Lion Singh Ltd | Transport & logistics | 2016 |
| Lion Tattoo Studios Ltd | Arts & recreation | 2024 |
| Lionel & Lionel Limited | | 1985 |
| Lionheart Security Group Ltd | Administrative & support | 2024 |
| Lionne Cars Ltd | Transport & logistics | 2019 |
| Lionquest Properties Ltd | Real estate | 2025 |
| Lionsfield Property Services Ltd | Real estate | 2024 |
| LIP Sync Post Limited | Information & communication | 1994 |
| Lipsync LLP | | 2012 |
| Liquor Shop Ltd | Wholesale & retail | 2025 |
| LIS Holdings Group Ltd | Financial services | 2025 |
| Lisman Ltd | Transport & logistics | 2025 |
| Lismore Motors Ltd | Wholesale & retail | 2020 |
| Liswork Ltd | Transport & logistics | 2020 |
| Literary Dictionary Company Limited | Information & communication | 2000 |
| Literatus Ltd | Education | 2024 |
| Little Blonde Book Talent Ltd | Professional & scientific | 2023 |
| Little Boffins Ltd | Education | 2025 |
| Little Einsteins Slough Nursery Limited | Education | 2025 |
| Little Lahore Express Ltd | Hospitality | 2023 |
| Little Loves Nursery Ltd | Health & social care | 2026 |
| Little Mils Ltd | Wholesale & retail | 2025 |
| Little Savers Ltd | Wholesale & retail | 2019 |
| Little Toes Grace Ltd | Health & social care | 2025 |
| Littlefashionuk Ltd | Wholesale & retail | 2024 |
| Littlepeanuts Limited | Wholesale & retail | 2026 |
| LIU Care Ltd | Extraterritorial | 2015 |
| Live Delivery Ltd | Transport & logistics | 2021 |
| Liverpool Splash Tours Limited | Transport & logistics | 2023 |
| Livin Estates Limited | Real estate | 2021 |
| Living Life Care Ltd | Public administration | 2023 |
| Living Life Fast Ltd | Professional & scientific | 2019 |
| Living Space Design Tiles & Bathrooms Limited | Wholesale & retail | 2018 |
| Living Word International Church (England) | Other services | 2004 |
| Livingston Enterprises Ltd | Professional & scientific | 2012 |
| Livlio Limited | Health & social care | 2026 |
| Lixus Capital Limited | Professional & scientific | 2026 |
| LJ Cobra Services Limited | Wholesale & retail | 2022 |
| LJ Property Sourcing Ltd | Administrative & support | 2025 |
| Ljvservices Limited | Health & social care | 2025 |
| LJW Consulting Ltd | Information & communication | 2014 |
| LK & DG Properties Limited | Real estate | 2025 |
| LK Building Constructions Ltd | Construction | 2016 |
| LKN Construction Ltd | Construction | 2018 |
| Lkram Ltd | Construction | 2025 |
| Lloyds Ceramics Ltd | Wholesale & retail | 2019 |
| LM Cleaning Services Ltd | Administrative & support | 2017 |
| Lm&H Consultancy Ltd | Wholesale & retail | 2025 |
| LMB Heating and Electrical Limited | Construction | 2021 |
| LMC2Y Communications Ltd | Professional & scientific | 2025 |
| LMD Plastering Projects Ltd | Construction | 2024 |
| LMR Logistics Ltd | Transport & logistics | 2023 |
| LMS & Co Associates Ltd | Professional & scientific | 2019 |
| LMS Painting Services Ltd | Construction | 2025 |
| LMS Redbridge Ltd | Arts & recreation | 2026 |
| LNA Group Limited | Construction | 2016 |
| LNP Audit UK Ltd | Professional & scientific | 2024 |
| Lo-Key Trading Limited | Wholesale & retail | 2026 |
| Loaddrop Ltd | Transport & logistics | 2024 |
| Local Builders Ltd | Construction | 2021 |
| Local Carpets & Furniture Limited | Wholesale & retail | 2019 |
| Location 71 Ltd | Construction | 2023 |
| Locin Holdings Ltd | Financial services | 2024 |