| Lavender Court RTM Company Ltd | Households | 2020 |
| Lavie (Israel) Chymistry Engineering Share Ltd | Extraterritorial | 2019 |
| Law Estates Limited | Real estate | 2013 |
| Lawns Blackheath Management Limited(The) | Real estate | 1977 |
| Lawrence Engineering Technology Co., Ltd | Wholesale & retail | 2021 |
| Lawrence World Records Certification Limited | Information & communication | 2022 |
| Laybo Co., Ltd | Extraterritorial | 2023 |
| Laylafit Limited | Arts & recreation | 2022 |
| Layo Fiber Products Limited | Extraterritorial | 2020 |
| LC Surgery Ltd | Health & social care | 2025 |
| LCB Heating Ltd | Construction | 2020 |
| LCS BEE Solutions Limited | Other services | 2019 |
| Lcuk Investments Ltd | Construction | 2022 |
| LDC - Europe Co. Limited | Wholesale & retail | 1998 |
| LDJ Events Limited | Administrative & support | 2019 |
| Ldtechnova Co., Limited | Wholesale & retail | 2023 |
| LE Chateau D'If Ltd | Hospitality | 1992 |
| LE Dailycorner Cafe Limited | Hospitality | 2018 |
| LE Fric Limited | Extraterritorial | 2006 |
| Leader Green Eco-Pack Co., Ltd | Extraterritorial | 2017 |
| Leader Industry Co., Ltd | Extraterritorial | 2013 |
| Leader Machine Industrial Co., Ltd | Wholesale & retail | 2016 |
| Leadingtech Diamond Tools Ltd | Extraterritorial | 2013 |
| Leaone Group Ltd | Extraterritorial | 2024 |
| Leaphart Investments Limited | Households | 2024 |
| Leaphart Limited | Real estate | 1984 |
| Leaping Global Limited | Wholesale & retail | 2021 |
| Learn Capacitor Limited | Extraterritorial | 2022 |
| Learnfluid Ltd | Information & communication | 2022 |
| Learning Through Adventure Ltd | Arts & recreation | 2009 |
| Leathwell Road Management Limited | Households | 1985 |
| Lebaishi International Chymistry Engineering (UK) Ltd | Extraterritorial | 2020 |
| Lebete Housewares Co., Limited | Extraterritorial | 2015 |
| LEC International Co., Ltd | Wholesale & retail | 2024 |
| Lechemie Co., Ltd. | Wholesale & retail | 2022 |
| LED Lighting Co., Ltd | Manufacturing | 2022 |
| Lederer GmbH Limited | Wholesale & retail | 2025 |
| LEE Bridge Trading Co., Limited | Extraterritorial | 2014 |
| LEE Gladding Limited | Information & communication | 2013 |
| LEE Song Jewelry Co., Ltd. | Professional & scientific | 2017 |
| LEE Young Limited | Construction | 2017 |
| Leechen Technology Co., Ltd | Wholesale & retail | 2022 |
| Leemar Ltd | Construction | 2023 |
| Leennt Group Limited | Extraterritorial | 2019 |
| LEF Solar Ltd | Extraterritorial | 2013 |
| Legacy Legal Services Ltd | Professional & scientific | 2024 |
| Legacy Project Solutions Ltd | Construction | 2009 |
| Legacy Sands Limited | Households | 2020 |
| Legal Finance Limited | Administrative & support | 2021 |
| Legatus Strategic Group Ltd | Professional & scientific | 2024 |
| Legend Controls Co Limited | Manufacturing | 2024 |
| Lehmann Corporation Limited | Wholesale & retail | 2019 |
| Lehmann International Trade Co., Ltd | Manufacturing | 2025 |
| Leifeng Industry Limited | Wholesale & retail | 2025 |
| Leighten Electric Technology Co., Ltd | Extraterritorial | 2019 |
| Leina Skyline Handbag Co., Ltd | Wholesale & retail | 2018 |
| Leioa Property Ltd | Real estate | 2019 |
| Leiste Limited | Manufacturing | 2022 |
| Leistung Energie Limited | Extraterritorial | 2015 |
| Lema Consultancy Ltd | Administrative & support | 2020 |
| Lemiba Technology Ltd. | Extraterritorial | 2016 |
| Lemon Squeeze Productions Ltd | Education | 2024 |
| Lemwa Industrial Co., Ltd | Manufacturing | 2025 |
| Lend UK Ltd | Professional & scientific | 2025 |
| Lenia Life Ltd | Wholesale & retail | 2021 |
| Lenmicro Limited | Information & communication | 2017 |
| Lenn Limited | Professional & scientific | 2026 |
| LEO (Belgicus) Union Cham Co., Ltd | Extraterritorial | 2021 |
| LEO International Trading Co., Ltd | Wholesale & retail | 2022 |
| Leoman Publishing Co., Ltd | Extraterritorial | 2012 |
| LEONARDO13 Limited | Professional & scientific | 2018 |
| Lepara Beauty & Care Ltd. | Manufacturing | 2026 |
| LES Mini Linguistes Limited | Other services | 2016 |
| Leshine Fashion Co., Ltd | Extraterritorial | 2024 |
| Lester Sci-Tech Group Limited | Manufacturing | 2025 |
| Lester VON Carlo Furniture Co., Ltd. | Extraterritorial | 2020 |
| Lets Travel With US 360 Ltd | Administrative & support | 2023 |
| LEV Recruitment Limited | Administrative & support | 2011 |
| Level UP Incorporated Ltd | Education | 2025 |
| Leydee Limited | Wholesale & retail | 2019 |
| Leytonstone Road Management Ltd | Households | 2018 |
| LFF International Co., Ltd | Extraterritorial | 2015 |
| LG Electric Appliance Group UK Ltd | Manufacturing | 2017 |
| LGH Products Ltd | Extraterritorial | 2013 |
| Lglift Global Limited | Manufacturing | 2023 |
| LHG International Trade Co., Limited | Wholesale & retail | 2023 |
| LHJ International Co., Ltd | Extraterritorial | 2012 |
| Lhsx Trading Co., Ltd. | Extraterritorial | 2021 |
| LI & Fine Ltd | Extraterritorial | 2016 |
| Liancheng IMP and EXP Co., Limited | Wholesale & retail | 2023 |
| Lianchuang Tech Co., Ltd | Extraterritorial | 2022 |
| Liangjie Technology Co., Ltd | Extraterritorial | 2021 |
| Liber AI Ltd | Information & communication | 2020 |
| Liberty Grace Trading Co., Ltd | Extraterritorial | 2019 |
| Libra Industrial Enterprise Co., Ltd. | Extraterritorial | 2013 |
| Licensing Made Easy Ltd | Professional & scientific | 2018 |
| Licheng International Trading Co., Limited | Wholesale & retail | 2017 |
| Lichuan Trading Co., Ltd | Wholesale & retail | 2021 |
| Lidoomia Biotechnology UK Ltd | Extraterritorial | 2021 |
| Lidou Co., Ltd | Extraterritorial | 2014 |