| Logic BIT Ltd | Information & communication | 2020 |
| Logica Automation Limited | Professional & scientific | 2024 |
| Logical Lifting Ltd | Arts & recreation | 2023 |
| Logical Ventures Limited | Information & communication | 2021 |
| Logiki Strata Limited | Information & communication | 2025 |
| Logiport EOT Trustees Limited | Financial services | 2022 |
| Logiport Holdings Limited | Financial services | 2019 |
| Logistara Solutions Ltd | Transport & logistics | 2026 |
| Logistics Hub Ltd | Wholesale & retail | 2026 |
| Logistics Technologies Limited | Information & communication | 2019 |
| Loisir Limited | Administrative & support | 2005 |
| Loka Vitality Ltd | Health & social care | 2023 |
| LOLA6 Limited | Information & communication | 2025 |
| Lolovelo Ltd | Wholesale & retail | 2025 |
| Lomas & Lomas Limited | Wholesale & retail | 2011 |
| Lomas Vintage Cars Limited | Wholesale & retail | 2014 |
| Lomax Glass & Glazing Ltd | Construction | 2022 |
| Lomax Joinery Northwest Limited | Construction | 2014 |
| Lomi Finance Ltd | Financial services | 2025 |
| LON Music Limited | Arts & recreation | 2025 |
| London Builders Solutions Ltd | Construction | 2026 |
| London City Holdings & Investments Ltd | Real estate | 2022 |
| London DRY Risers Ltd | Construction | 2014 |
| London First Academy Ltd | Education | 2022 |
| London Luton Food Industry Limited | Hospitality | 2017 |
| London Mada UK Ltd | Arts & recreation | 2019 |
| London PAW Galore Ltd | Wholesale & retail | 2023 |
| London Sprinklers Limited | Construction | 2024 |
| London Terroir Hunters Limited | Wholesale & retail | 2026 |
| Long Sutton Software Services Limited | Information & communication | 2026 |
| Longmore LN Property Ltd | Real estate | 2025 |
| Longsands Holdings Limited | Financial services | 2022 |
| Longsands Investment Limited | Construction | 2020 |
| Longsight Mews Management Ltd | Households | 2025 |
| Longthorne Entertainments Limited | Arts & recreation | 2021 |
| Longworth Investments Limited | Construction | 1999 |
| Longworth Solutions Limited | Hospitality | 2021 |
| Look Good Learning Ltd | Information & communication | 2021 |
| Lookalikey Ltd | Wholesale & retail | 2024 |
| Loop Marketing Holdings Limited | Professional & scientific | 2018 |
| Loop Marketing Limited | Professional & scientific | 2005 |
| Lopez Alexa Investments Ltd | Hospitality | 2024 |
| Lopron Limited | Wholesale & retail | 2026 |
| Lord Angel Ltd | Arts & recreation | 2021 |
| Lord Gill Property Ltd | Real estate | 2023 |
| Lords Driving Training Ltd | Education | 2023 |
| Lords HGV Commercials Ltd | Wholesale & retail | 2025 |
| Lorgat Ltd | Real estate | 2025 |
| Lori Brown Services Limited | Transport & logistics | 2018 |
| LOS Ratones Limited | Arts & recreation | 2024 |
| LOS Ventures Limited | Real estate | 2026 |
| Losh Interiors Limited | Construction | 2019 |
| Losh Interiors NW Ltd | Hospitality | 2023 |
| Lost Boys Films Limited | Arts & recreation | 2011 |
| Lost Culture Studios Ltd | Manufacturing | 2024 |
| Lostock and Chew Moor Community Orchard CIC | Agriculture & fishing | 2026 |
| Lostock Car Sales Ltd | Wholesale & retail | 2020 |
| Lostock Design & Build Limited | Construction | 2017 |
| Lostock Electrical Projects Company Limited | Manufacturing | 1986 |
| Lostock Financial Limited | Extraterritorial | 2013 |
| Lostock Investments Limited | Real estate | 2022 |
| Lostock Management Company Limited | Real estate | 2001 |
| Lostock Pharmachem Limited | Administrative & support | 2021 |
| Lostock Property Group Limited | Real estate | 2022 |
| Lostock Property Investment Limited | Real estate | 2010 |
| Lostock Property Ltd | Real estate | 2025 |
| Lostock Property Management Limited | Households | 2024 |
| Lostock Skip Hire Limited | Transport & logistics | 2003 |
| Lostock Sports Club Ltd. | Arts & recreation | 2008 |
| Lostock Transport Services Limited | Transport & logistics | 2005 |
| Lostock Tyre Centre Ltd | Wholesale & retail | 2021 |
| Lothringer Ltd | Information & communication | 2010 |
| Lotus Car Dealers Limited | Wholesale & retail | 2025 |
| Lotus Electrical Limited | Construction | 2012 |
| Lotus Stays Limited | Real estate | 2024 |
| Lotus Triumphs Limited | Wholesale & retail | 2017 |
| Louba Consulting Ltd | Administrative & support | 2013 |
| Loubiere Ltd | Education | 2024 |
| Louie a Consulting Limited | Professional & scientific | 2018 |
| Louis Xiii Ltd | Other services | 2015 |
| Louise Nolan Limited | Other services | 2017 |
| Louw&Sons Limited | Wholesale & retail | 2025 |
| Lovan Restaurant Ltd | Hospitality | 2025 |
| Lovatt Consulting Limited | Information & communication | 2024 |
| Love a Deal Ltd | Wholesale & retail | 2017 |
| Love a Doodles Ltd | Other services | 2020 |
| Love at Home C.I.C. | Public administration | 2024 |
| Love Business Group Limited | Energy | 2007 |
| Love Financial Solutions Ltd | Financial services | 2023 |
| Love From Above Online Limited | Information & communication | 2024 |
| Love Haven Care Solutions Ltd | Public administration | 2025 |
| Love Hire Limited | Construction | 2017 |
| Love Lily Florist Supplies Ltd | Wholesale & retail | 2025 |
| Love Loaded Bars Ltd | Manufacturing | 2023 |
| Love to Care (Manchester) Ltd | Health & social care | 2018 |
| Love to Communicate Limited | Other services | 2013 |
| LOVE2ROAM Ltd | Administrative & support | 2023 |
| Lovedby Services Ltd | Information & communication | 2019 |
| Lovehomely Limited | Wholesale & retail | 2024 |
| Loven Limited | Real estate | 2024 |