| Lines Aesthetics Ltd | Education | 2023 |
| Lines Keogh (POS) Limited | Manufacturing | 2008 |
| Liney's Brides Limited | Wholesale & retail | 2011 |
| Linford Cakes Ltd | Wholesale & retail | 2021 |
| Linford Estates Limited | Real estate | 2015 |
| Linford Lettings Limited | Real estate | 2026 |
| Linford Marketing Limited | Professional & scientific | 2018 |
| Linic Holdings Limited | Financial services | 1996 |
| Linic Plastics Limited | Manufacturing | 1979 |
| Linic Products Limited | Manufacturing | 1987 |
| Link Advertising and Media Solutions Ltd | Professional & scientific | 2017 |
| Link and Crosslink Technologies Ltd | Information & communication | 2025 |
| Link Auto Ltd | Wholesale & retail | 2025 |
| Link Bytes Limited | Wholesale & retail | 2025 |
| Link Engineering & Maintenance Supplies Limited | Wholesale & retail | 1983 |
| Link Park Heathrow LLP | | 2016 |
| Link Survey Ltd | Professional & scientific | 2022 |
| Link Wholesalers Limited | Wholesale & retail | 1990 |
| Linkcraftsolution Ltd | Other services | 2025 |
| Linksmax Limited | Health & social care | 2000 |
| Linkstud PSR Limited | Construction | 2009 |
| Linliz Cafe & Desserts Ltd | Hospitality | 2025 |
| Linmo for Trade Ltd | Wholesale & retail | 2025 |
| Linnex (UK) Ltd | Manufacturing | 2017 |
| Linpic Limited | Manufacturing | 2011 |
| Linpic Software Systems Ltd | Information & communication | 2012 |
| Linshaw Limited | Real estate | 2019 |
| Lintlaw Estates Limited | Real estate | 2022 |
| Linton Environmental Hygiene Products Limited | Extraterritorial | 2017 |
| Linton Metalware Limited | Manufacturing | 1924 |
| Lintons Barbers Limited | Other services | 2017 |
| Linxcom Holdings Limited | Financial services | 2019 |
| Linxcom Limited | Manufacturing | 2010 |
| Lion Empire Football Club Ltd | Arts & recreation | 2019 |
| Lion Hart Security Services Limited | Administrative & support | 2011 |
| Lion Ironwork Limited | Professional & scientific | 2002 |
| Lion Planning Limited | Professional & scientific | 2021 |
| Lion Trainers England Limited | Professional & scientific | 2001 |
| Lionbrook UK Limited | Professional & scientific | 2011 |
| Lionforce Ventures Ltd | Wholesale & retail | 2025 |
| Lionhart Facility Management Ltd | Professional & scientific | 2021 |
| Lionheart Educational Trust | Education | 2013 |
| Lions Cafe Ltd | Hospitality | 2019 |
| Lions Pharma Limited | Wholesale & retail | 2024 |
| Lipsy Limited | Wholesale & retail | 2006 |
| Liquid 8 Limited | Wholesale & retail | 2021 |
| Liquid Gold Sales Ltd | Wholesale & retail | 2019 |
| Liquid New Media Limited | Information & communication | 2000 |
| Liquidity Acquisition Ltd | Real estate | 2003 |
| Liquor Drinks Ltd | Wholesale & retail | 2019 |
| Lira Global Ltd | Health & social care | 2025 |
| Liral Krupa Investments Ltd | Real estate | 2026 |
| Liral Krupa Ltd | Wholesale & retail | 2024 |
| Liral MAA Ltd | Real estate | 2024 |
| Lirbai Construction Ltd | Construction | 2026 |
| Liris Optics Limited | Health & social care | 2013 |
| LIS Naylor Limited | Arts & recreation | 2022 |
| Lisa Barker Associates Limited | Professional & scientific | 2007 |
| Lisa Barnes & Associates Ltd | Professional & scientific | 2023 |
| Lisa Holmes Limited | Health & social care | 2003 |
| Lisa Jane Limited | Other services | 2019 |
| Lisa's Tyres & Auto Centre Limited | Wholesale & retail | 2025 |
| Lisafragrances Ltd | Wholesale & retail | 2025 |
| Lisah Investments Limited | Real estate | 2023 |
| Lisah Smiles Limited | Health & social care | 2022 |
| Lisan Services Ltd | Professional & scientific | 2020 |
| Lisbon Digital Ltd | Information & communication | 2019 |
| Lisi Construction Ltd | Construction | 2019 |
| Lisi Investments Ltd | Real estate | 2024 |
| Lismark Office Products Limited | Wholesale & retail | 2007 |
| Liss Sport Limited | Wholesale & retail | 2017 |
| Liss Taylor Designs & Interiors Ltd | Wholesale & retail | 2022 |
| Lissys Limited | Information & communication | 1988 |
| Lister Petter Limited | Manufacturing | 2003 |
| LISTER5 Ltd | Information & communication | 2021 |
| Listers Law Limited | Professional & scientific | 2019 |
| Litcards Ltd | Wholesale & retail | 2025 |
| Lite Creative Limited | Manufacturing | 2023 |
| Lite Energy Ltd | Construction | 2025 |
| Literati Arts CIC | Arts & recreation | 2022 |
| Litha 22 Ltd | Administrative & support | 2023 |
| Lithgo Press Limited | Manufacturing | 1978 |
| Litman Tech Services Ltd | Information & communication | 2017 |
| Litmus Lettings Ltd | Financial services | 2022 |
| Little Achievers Preschools (Stoney Stanton) Ltd | Education | 2022 |
| Little Angels Respite Limited | Health & social care | 2019 |
| Little Angelz Day Nursery Ltd | Education | 2013 |
| Little Aston Holdings Limited | Construction | 2022 |
| Little Baddies Ltd | Other services | 2023 |
| Little Bears Photography Limited | Professional & scientific | 2023 |
| Little Bunny Retreat Ltd | Hospitality | 2026 |
| Little Cobblers Ltd | Hospitality | 2021 |
| Little Connery Leys RTM Company Limited | Households | 2021 |
| Little Craft Corner Ltd | Wholesale & retail | 2026 |
| Little Explorer Day Nursery Ltd | Health & social care | 2026 |
| Little Explorers Sileby Ltd | Health & social care | 2024 |
| Little Fishes Ltd | Education | 2009 |
| Little Footprints Nursery Limited | Education | 2008 |
| Little Friends (Nottm) Limited | Education | 2005 |
| Little Hill Pharmacy Limited | Wholesale & retail | 2006 |