| Logic World Developments Limited | Construction | 2016 |
| Logical 5 Studio Limited | Manufacturing | 2013 |
| Logicworld (UK) Limited | Manufacturing | 2008 |
| Logifreight Ltd | Transport & logistics | 2023 |
| Logimotive Ltd | Transport & logistics | 2024 |
| Logistics by Ghuman Ltd | Transport & logistics | 2022 |
| Logistics N Servives Ltd | Transport & logistics | 2025 |
| Logistryx Solutions Ltd | Transport & logistics | 2026 |
| Logix Instore Ltd | Construction | 2009 |
| Logo Fashions Ltd | Manufacturing | 2018 |
| Logo Promo Ltd | Wholesale & retail | 2019 |
| Logo's 4 U Ltd | Professional & scientific | 2002 |
| Logos Europe Ltd | Education | 2018 |
| Logos Sports Ltd | Arts & recreation | 2024 |
| Logotranssped Ltd | Transport & logistics | 2022 |
| Lohgarh Productions Limited | Professional & scientific | 2023 |
| Loisethan Healthcare Ltd | Health & social care | 2021 |
| Loizou Locum Limited | Health & social care | 2014 |
| Loka Design Ltd | Professional & scientific | 2018 |
| Lokesh Ltd | Health & social care | 2015 |
| Lokma Shawarma Limited | Hospitality | 2024 |
| Lola Scaffolding Ltd | Construction | 2025 |
| Lolabia Care Ltd | Health & social care | 2026 |
| Lollipops Studio Limited | Hospitality | 2019 |
| Lomastar Limited | Health & social care | 2015 |
| Lomusi Limited | Health & social care | 2012 |
| Lonbrook S S Ltd | Wholesale & retail | 2025 |
| London & Padel Limited | Wholesale & retail | 2025 |
| London &Overseas Commerce Limited | Wholesale & retail | 2024 |
| London 138 Ltd | Hospitality | 2025 |
| London 24/7 Ltd | Manufacturing | 2025 |
| London Bird Limited | Wholesale & retail | 2023 |
| London Calling Limited | Professional & scientific | 2007 |
| London College of Creative Media Ltd | Information & communication | 2024 |
| London Fashion Ltd | Wholesale & retail | 2025 |
| London Film Production and Digital Services Ltd | Information & communication | 2023 |
| London Foster Ltd | Real estate | 2019 |
| London International Academy of Sciences Ltd | Public administration | 2020 |
| London IT Resourcing Ltd | Administrative & support | 2023 |
| London KZ Ltd | Wholesale & retail | 2018 |
| London Management and Investments Ltd | Professional & scientific | 2013 |
| London Marius Limited | Information & communication | 2024 |
| London MED LAB Ltd | Health & social care | 2024 |
| London Medical Suites Ltd | Wholesale & retail | 2025 |
| London Mornings Limited | Wholesale & retail | 2023 |
| London OFF Licence Ltd | Wholesale & retail | 2024 |
| London PKG Ltd | Administrative & support | 2024 |
| London Porticos Ltd | Professional & scientific | 2018 |
| London RD Foods Limited | Hospitality | 2023 |
| London Road Mini Market Ltd | Wholesale & retail | 2024 |
| London School of Academia Ltd | Education | 2024 |
| London School of Media and Management Ltd | Professional & scientific | 2000 |
| London SRK Ltd | Construction | 2024 |
| London Supply Company Limited | Extraterritorial | 2013 |
| London Sweets & Savouries Ltd | Wholesale & retail | 2025 |
| London Training and Recruitment Ltd | Information & communication | 2022 |
| London VET Rehab Limited | Professional & scientific | 2018 |
| London Vision College Ltd | Information & communication | 2023 |
| Londong UK Ltd | Transport & logistics | 2020 |
| Londonuk Ltd | Real estate | 2020 |
| Lonergan Estate Management Ltd | Households | 2024 |
| Long & Short Properties Ltd | Real estate | 2021 |
| Long Eaton Textiles Limited | Manufacturing | 1997 |
| Long Meadow Way Flats Limited | Households | 2023 |
| Long Properties Limited | Real estate | 2015 |
| Longbow Acquisitions Ltd | Real estate | 2025 |
| Longcliffe Transport Ltd | Transport & logistics | 2014 |
| Longcross Haulage Ltd | Transport & logistics | 2014 |
| Longdale Excellence Ltd | Administrative & support | 2014 |
| Longfield Construction Ltd | Construction | 2021 |
| Longfordlane Trading Ltd | Transport & logistics | 2014 |
| Longhoughton Haulage Ltd | Transport & logistics | 2014 |
| Longleigh Foundation | Education | 2015 |
| Longmill Ltd | Professional & scientific | 1999 |
| Longmoss Productivity Ltd | Transport & logistics | 2015 |
| Longney Transport Ltd | Transport & logistics | 2014 |
| Longslow Logistics Ltd | Transport & logistics | 2014 |
| Longstone Property Investments Ltd | Real estate | 2024 |
| Longvalley Logistics Ltd | Transport & logistics | 2014 |
| Lonnieville Integrated Services Limited | Hospitality | 2024 |
| Lonsdale Construction Ltd | Construction | 2017 |
| Lonsdale Court (Thurmaston) Management Company Limited | Real estate | 2015 |
| Lonsdale Motors Ltd | Wholesale & retail | 2026 |
| Lonwa PVT Ltd | Health & social care | 2018 |
| Look and Like Ltd | Wholesale & retail | 2026 |
| Look Ecom Ltd | Wholesale & retail | 2023 |
| Look Pretty Limited | Manufacturing | 2022 |
| Look Smart Embroidery Limited | Manufacturing | 2009 |
| Looksee Limited | Manufacturing | 2018 |
| Loome Construction Ltd | Construction | 2025 |
| Loomlight Design Limited | Wholesale & retail | 2015 |
| Looms AAP Limited | Wholesale & retail | 2020 |
| Loomuz Ltd | Information & communication | 2026 |
| Loony Juice Ltd | Wholesale & retail | 2025 |
| Looqma Ltd | Wholesale & retail | 2019 |
| Lootique London Ltd | Wholesale & retail | 2026 |
| Lorato Marketing Company Limited | Real estate | 2004 |
| Lord Bookkeeping Limited | Professional & scientific | 2022 |
| Lord of the Brands Ltd | Wholesale & retail | 2024 |
| Lord Toby Ltd | Hospitality | 2026 |