| Loft Storage Solutions Limited | Construction | 2004 |
| Lofthouse Limited | Construction | 2025 |
| Logan Asset Finance Limited | Financial services | 2020 |
| Logan Carpets Limited | Wholesale & retail | 2001 |
| Logan Energy Limited | Energy | 2005 |
| Logan Enterprise Ltd | Hospitality | 2026 |
| Logical Cabling Solutions Ltd | Construction | 2016 |
| Logicatronics Limited | Manufacturing | 2010 |
| Logicpulse Limited | Information & communication | 2025 |
| Logicsel Ltd | Information & communication | 2021 |
| Logillistics Limited | Transport & logistics | 2015 |
| Logistics 4U Ltd | Transport & logistics | 2024 |
| Logistics M&A Group Limited | Professional & scientific | 2025 |
| Logistics SY Limited | Transport & logistics | 2023 |
| Logistics Systems Consulting Limited | Information & communication | 2012 |
| Logistics Training Services Ltd | Administrative & support | 2010 |
| Loha Ltd. | Wholesale & retail | 2017 |
| Lohit Lakshmi Ltd | Health & social care | 2017 |
| Loks Fran Limited | Administrative & support | 2020 |
| Loks Holdings Limited | Professional & scientific | 2017 |
| Loks Property Limited | Administrative & support | 2018 |
| Lokw LLP | | 2012 |
| Lokw-De Limited | Administrative & support | 2013 |
| Lokw-Dg Limited | Administrative & support | 2012 |
| Lokw-Eb Limited | Administrative & support | 2012 |
| Lokw-Jwh Limited | Administrative & support | 2012 |
| Lokw-Nms Limited | Administrative & support | 2012 |
| Lokw-Sk Limited | Administrative & support | 2012 |
| Lokw-Wkp Limited | Administrative & support | 2012 |
| Lola FOX Ltd | Information & communication | 2025 |
| Loline Ltd | Health & social care | 2011 |
| Lollipop Investments Limited | Real estate | 2020 |
| Lolo Signs Ltd | Manufacturing | 2025 |
| Lolomania Ltd | Transport & logistics | 2020 |
| Loluxe Events Ltd | Hospitality | 2025 |
| Lomas Joinery & Carpentry Ltd | Construction | 2024 |
| Lomas Potatoes Limited | Wholesale & retail | 2026 |
| Lomas Smith Limited | Real estate | 2023 |
| Lomax Consultants Ltd | Professional & scientific | 2025 |
| Lomax Family Consulting Ltd | Administrative & support | 2023 |
| Lombardi's Italian Limited | Hospitality | 2014 |
| London & South Yorkshire Securities Limited | Real estate | 1963 |
| London Bridge Motion Pictures Ltd | Information & communication | 2025 |
| London Clapham Investments and Developments (NO. 1) Limited | Real estate | 2025 |
| London Clapham Investments and Developments Limited | Real estate | 2014 |
| London Community Action C.I.C. | Education | 2014 |
| London Construction & Ventures Ltd | Construction | 2022 |
| London Escaped Ltd | Arts & recreation | 2018 |
| London Fusion Limited | Administrative & support | 2025 |
| London Insulation Supplies Limited | Extraterritorial | 1992 |
| London Microcement Limited | Administrative & support | 2020 |
| London RD Barber Ltd | Other services | 2024 |
| London Regenerative Clinics Ltd | Health & social care | 2022 |
| London Regenerative Inst Ltd | Professional & scientific | 2021 |
| London Resoles Ltd | Other services | 2024 |
| London Road Car Park Ltd | Administrative & support | 2022 |
| London Scholars Ltd | Hospitality | 2019 |
| London School of Applied Excellence Limited | Education | 2026 |
| London Venetian Plaster Supplies Limited | Administrative & support | 2023 |
| London Wall Insurance Services Limited | Financial services | 1979 |
| London Work Solution Ltd | Administrative & support | 2022 |
| Lone Wolf Legacy Ltd | Agriculture & fishing | 2021 |
| Lonesome Pine Locations Limited | Information & communication | 2013 |
| Long and Short CAD Services Limited | Information & communication | 2010 |
| Long Run Financial Education Ltd | Administrative & support | 2023 |
| Longacre Investments Limited | Real estate | 2019 |
| Longange Services Limited | Construction | 2025 |
| Longbone Dental Limited | Health & social care | 2025 |
| Longevity Music Management Ltd | Professional & scientific | 2023 |
| Longevity PR Ltd | Professional & scientific | 2016 |
| Longford Estates Limited | Real estate | 2026 |
| Longfu Media Limited | Professional & scientific | 2025 |
| Longfu Trading Ltd | Wholesale & retail | 2025 |
| Longhan Creative Limited | Wholesale & retail | 2025 |
| Longhan Trading Ltd | Wholesale & retail | 2025 |
| Longley 4G Limited | Information & communication | 1998 |
| Longley Health Care Limited | Health & social care | 2001 |
| Longridge PUB Company Ltd | Hospitality | 2025 |
| Longroad Theatre CIC | Arts & recreation | 2026 |
| Longshaw Advisory Limited | Professional & scientific | 2025 |
| Longstone GEO Consultants Limited | Real estate | 2006 |
| Longstone Motor Company Ltd | Wholesale & retail | 2024 |
| Longwing Limited | Information & communication | 2006 |
| Lonnen Health Care Limited | Health & social care | 2002 |
| Look Cctv Limited | Extraterritorial | 1987 |
| Look Closed Circuit T.V Limited | Extraterritorial | 1990 |
| Look Forward Limited | Professional & scientific | 2015 |
| Look Local (Publishing) Limited | Information & communication | 2003 |
| Look ME UP Ltd | Hospitality | 2021 |
| Looks Tanned Ltd | Other services | 2025 |
| Loom Productions Limited | Information & communication | 2011 |
| Loom Projects Limited | Professional & scientific | 2022 |
| Loomenos Limited | Wholesale & retail | 2019 |
| Loop Detection Services Limited | Construction | 2005 |
| Loop Education Limited | Extraterritorial | 2010 |
| Loop Recruit Limited | Administrative & support | 2025 |
| Loose Canon Films Ltd | Information & communication | 2010 |
| LOP Farm Ltd | Agriculture & fishing | 2016 |
| Lopes Incorporated Limited | Real estate | 2022 |
| Loppas Limited | Construction | 2018 |