| Loco Klub C.I.C. | Arts & recreation | 2014 |
| Locumuk Limited | Professional & scientific | 2019 |
| Locus Dentus Ltd | Health & social care | 2025 |
| LOD Electrical Ltd | Construction | 2026 |
| Loddon Power Limited | Energy | 2016 |
| Lodes, Fast & Safe Trading Limited | Wholesale & retail | 2024 |
| Lodestone Oxford (Holdings) Limited | Financial services | 2023 |
| Lodestone Oxford Limited | Professional & scientific | 2012 |
| Lodfey Ltd | Wholesale & retail | 2025 |
| Lodge (Downend) Associates Ltd | Professional & scientific | 2011 |
| Lodge Causeway Trading Estate Management Company Limited | Real estate | 2007 |
| Lodge Farm (Milbury Heath) Limited | Other services | 2014 |
| Lodge Food Limited | Hospitality | 2026 |
| Lodge Joinery (Bristol) Limited | Construction | 2008 |
| Lodgical Holidays Ltd | Real estate | 2024 |
| Lodsworth Holdings Ltd | Real estate | 2019 |
| Lodway Service Station Limited | Wholesale & retail | 1961 |
| Loewy Design Ltd | Professional & scientific | 2026 |
| Loftshield Limited | Construction | 2025 |
| Lofty Properties Ltd | Real estate | 2016 |
| Lofty Sky Properties Ltd | Real estate | 2017 |
| LOG Partners Ltd | Real estate | 2026 |
| Logersham Developments Limited | Real estate | 1992 |
| Logic 800 Limited | Professional & scientific | 1997 |
| Logic Engineering Services Ltd | Construction | 2009 |
| Logic Global Solutions Limited | Professional & scientific | 2017 |
| Logic SHE Consulting Ltd | Information & communication | 2006 |
| Logic SHE Solutions Ltd | Professional & scientific | 2003 |
| Logic SHE Training Limited | Professional & scientific | 2003 |
| Logicboks Limited | Professional & scientific | 2021 |
| Logika Consultants Limited | Professional & scientific | 2019 |
| Logika Group Limited | Professional & scientific | 2020 |
| Logiq Consulting Ltd | Information & communication | 2018 |
| Logistical Support Properties Limited | Real estate | 2022 |
| Logistical Support Services Ltd | Administrative & support | 1997 |
| Logistics Experts Transport Limited | Administrative & support | 2015 |
| Logistics JOB Shop Limited | Professional & scientific | 2010 |
| Logisticsforyou Ltd | Transport & logistics | 2024 |
| Logisticsrecruit UK Limited | Administrative & support | 2012 |
| Logistictrans Limited | Transport & logistics | 2025 |
| Logiten Limited | Information & communication | 2013 |
| Logix Global Limited | Information & communication | 2022 |
| Logixrt Limited | Administrative & support | 2026 |
| Logmartins Ltd | Transport & logistics | 2026 |
| Logmil Engineering Services Limited | Professional & scientific | 2024 |
| Logobo Limited | Real estate | 2025 |
| Logos Fulfilment Services Limited | Wholesale & retail | 2010 |
| Logostronic Ltd | Manufacturing | 2016 |
| Logwin Limited | Real estate | 1988 |
| LOH Architecture and Design Ltd | Professional & scientific | 2023 |
| Lohz Ltd | Arts & recreation | 2026 |
| Lojics Resource Services Limited | Professional & scientific | 1965 |
| Loka HR Ltd | Professional & scientific | 2026 |
| Loki Drivers Ltd | Education | 2026 |
| Loki Poké Ltd | Hospitality | 2020 |
| Loki&Paws Ltd | Wholesale & retail | 2025 |
| Lola Digital Media Ltd | Professional & scientific | 2021 |
| Lola's LAB Ltd | Other services | 2018 |
| Lomaks LP | | 2012 |
| Lomen LP | | 2017 |
| Loml Films Ltd | Information & communication | 2020 |
| London and Bristol Partners Limited | Real estate | 2023 |
| London Archives and Moves Ltd | Extraterritorial | 2023 |
| London Business Analysts Ltd | Professional & scientific | 2006 |
| London Couriers Ltd | Transport & logistics | 2017 |
| London Distribution Park Management Company Limited | Real estate | 2014 |
| London Education and Consultancy Services Ltd | Education | 2012 |
| London Festival Opera Ltd | Extraterritorial | 2009 |
| London Finance 10 Limited | Financial services | 2022 |
| London Living SOL. Ltd | Real estate | 2025 |
| London Mulberry Nursery and Preschool Ltd | Education | 2018 |
| London Netball Limited | Arts & recreation | 2015 |
| London Nurses Agency Limited | Extraterritorial | 1970 |
| London Private Wealth Limited | Financial services | 2001 |
| London Skyline International Limited | Real estate | 2015 |
| London Smiles Limited | Health & social care | 2007 |
| London Sports Physiotherapy Ltd | Health & social care | 2007 |
| London Trading 75 Ltd | Extraterritorial | 2020 |
| London Vascular Limited | Health & social care | 2020 |
| Lonely Mouth Ltd | Hospitality | 2023 |
| Loney Stewart Holland LLP | | 2016 |
| Long Ashton Barbering Company Ltd | Other services | 2025 |
| Long Ashton Community Care Amenities CIC | Other services | 2022 |
| Long Ashton Ecology Training Limited | Professional & scientific | 2026 |
| Long Ashton Golf Club Estates Limited | Professional & scientific | 1937 |
| Long Ashton Golf Club Limited | Hospitality | 2022 |
| Long Eaton Limited | Information & communication | 2007 |
| Long Mill Property Ltd | Real estate | 2019 |
| Long Term Housing Ltd | Extraterritorial | 2024 |
| Long-Term Teachers Limited | Administrative & support | 2018 |
| Longacre (Bristol) Limited | Construction | 2004 |
| Longacre Avon Ltd | Financial services | 2020 |
| Longacre Homes Limited | Real estate | 2007 |
| Longacre Landmark Ltd | Financial services | 2020 |
| Longacre Partnership Limited | Administrative & support | 2015 |
| Longacres (Bristol) Management Limited | Households | 2023 |
| Longacres Limited | Professional & scientific | 2003 |
| Longacres Management Company (Bristol) Limited | Other services | 1988 |
| Longavon Limited | Financial services | 2013 |
| Longcross Garage Limited | Wholesale & retail | 2003 |