| Lmastores Ltd | Administrative & support | 2022 |
| Lmcc Trading Limited | Professional & scientific | 2011 |
| LMH Optimal Therapy Ltd | Public administration | 2023 |
| LMK Business Ltd | Wholesale & retail | 2025 |
| LNO Developments Ltd | Construction | 2020 |
| LNO Group Ltd | Construction | 2020 |
| Lnrs Catering Ltd | Hospitality | 2020 |
| LNV Property Limited | Construction | 2025 |
| LOA Hub Limited | Education | 2024 |
| Lobos Venture Ltd | Real estate | 2019 |
| Local IS OUR Future CIC | Administrative & support | 2026 |
| Local Services Network Ltd | Water & waste | 2024 |
| Loch Projects Limited | Other services | 2015 |
| Lock Genius Ltd | Wholesale & retail | 2024 |
| Lock Property Group Ltd | Real estate | 2025 |
| Lockbridge Developments Ltd | Real estate | 2023 |
| Locker 9 Ltd | Administrative & support | 2020 |
| Lockeridge Dene Limited | Professional & scientific | 2000 |
| Lockey Link Ltd | Information & communication | 2025 |
| Lockhart School of Driving Limited | Education | 2000 |
| Locklin Solutions Ltd | Information & communication | 2025 |
| Lockonego Ltd | Extraterritorial | 2005 |
| Lockstep Digital Limited | Information & communication | 2025 |
| Loco (Poole) Limited | Hospitality | 2010 |
| Loco Bayco Limited | Information & communication | 2026 |
| Loco Lime Ltd | Hospitality | 2023 |
| Loco Lime Wandsworth Ltd | Hospitality | 2025 |
| Loco Lime Winchester Ltd | Hospitality | 2025 |
| Locomotivation Leisure Limited | Education | 1990 |
| Locomotivation Ltd. | Education | 1999 |
| Locum Vanessa Limited | Wholesale & retail | 2024 |
| Lodeston II Ltd | Professional & scientific | 2022 |
| Lodeston Ltd | Professional & scientific | 2022 |
| Lodges & Yurts.Com Limited | Hospitality | 2015 |
| Loewenstein Holdings Limited | Administrative & support | 2022 |
| Logan Solutions Limited | Wholesale & retail | 2025 |
| Logicom South Limited | Wholesale & retail | 2024 |
| Logn Ltd | Information & communication | 2025 |
| Lojabr Limited | Wholesale & retail | 2025 |
| Lollipops Cafe Ltd | Hospitality | 2019 |
| Lonbourne Limited | Real estate | 1997 |
| Londolozi Trading Ltd | Wholesale & retail | 2020 |
| London Axis Ltd | Wholesale & retail | 2025 |
| London Lima International Ltd | Wholesale & retail | 2017 |
| London Meat Exchange Ltd | Wholesale & retail | 2025 |
| London Parkour Ltd | Education | 2018 |
| London Property Partners Limited | Real estate | 2013 |
| London Property Partners Residential Limited | Real estate | 2019 |
| London Swimming Pool Co Servicing Limited | Other services | 2010 |
| London Swimming Pool Company Limited | Professional & scientific | 2010 |
| London Swimming Pool Company Refurbishment Limited | Construction | 2017 |
| London Swimming Pool Group Limited | Professional & scientific | 2026 |
| London Tool Hire Limited | Extraterritorial | 2019 |
| Londondom Consulting Limited | Real estate | 2014 |
| Londondom Management Limited | Real estate | 2014 |
| Lone Wolf Boxing Ltd | Wholesale & retail | 2026 |
| Loneliness Together Chitter Chatter Clubs CIC | Health & social care | 2024 |
| Lonely Goat Running Club Limited | Arts & recreation | 2018 |
| Lonely Goat Sport Limited | Arts & recreation | 2018 |
| Longboard Completion Ltd | Information & communication | 2019 |
| Longburton Barns Ltd | Construction | 2022 |
| Longevite Clinic Ltd | Health & social care | 2020 |
| Longevity Box Ltd | Wholesale & retail | 2022 |
| Longfleet Filling Station Limited | | 1983 |
| Longham Garden Machinery Limited | Wholesale & retail | 2000 |
| Longworth CMS Ltd | Other services | 2016 |
| Look at YOU Limited | Other services | 2024 |
| Look Space Limited | Transport & logistics | 2023 |
| Look Storage (Ferndown) Limited | Transport & logistics | 2024 |
| Look Storage (Talbot Heath) Limited | Transport & logistics | 2024 |
| Loomwell Ltd. | Wholesale & retail | 2023 |
| Looney LAB Ltd | Information & communication | 2025 |
| Loop Vintage Ltd | Wholesale & retail | 2023 |
| Loop&Lime Ltd | Wholesale & retail | 2025 |
| Looploom.Co Ltd | Manufacturing | 2024 |
| Loose Reins (Dorset) Limited | Agriculture & fishing | 2020 |
| Loose Reins Breeding Co Limited | Agriculture & fishing | 2024 |
| Loqui Limited | Professional & scientific | 2015 |
| Loqui Properties Limited | Real estate | 2023 |
| Loqus Coliving Ltd | Information & communication | 2021 |
| Lord Barber (Dorset) Ltd | Other services | 2025 |
| Lore Luxury Travel Ltd | Administrative & support | 2023 |
| Lorecia Clothing Ltd | Wholesale & retail | 2026 |
| Loreto Management Co. Limited | Households | 2022 |
| Lorincz Delivery Solutions Ltd | Transport & logistics | 2017 |
| Lorne Park Limited | Households | 2008 |
| Lost BOY Collective Ltd | Information & communication | 2023 |
| Lost Horizon Private Limited | Professional & scientific | 2024 |
| Lotus Adapt Ltd | Manufacturing | 2019 |
| Lotus Home and Garden Ltd | Construction | 2023 |
| Lotus Mentoring Ltd | Education | 2021 |
| Loudigital Limited | Wholesale & retail | 2025 |
| Louds Piece Limited | Real estate | 2012 |
| Louem Limited | Administrative & support | 2024 |
| Louis C Fisher (Estate Management) Ltd | Real estate | 1977 |
| Louis-Olive Ltd | Information & communication | 2026 |
| Louisa Ghevaert Associates Ltd | Professional & scientific | 2019 |
| Loulous Bridal Boutique Ltd | Wholesale & retail | 2018 |
| Love ALL Food Limited | Hospitality | 2020 |
| Love Daisy MAY Ltd | Wholesale & retail | 2023 |