| KS Fashion Textile Co., Ltd | Professional & scientific | 2012 |
| KS Machinery Co., Ltd | Manufacturing | 2022 |
| KS Textile Co., Limited | Manufacturing | 2024 |
| KSC Scaffolding Limited | Construction | 2015 |
| Ksntek Electronics Technology Limited | Manufacturing | 2023 |
| KSO Productions Limited | Arts & recreation | 2018 |
| Kstokes Consultancy Limited | Financial services | 2014 |
| KTM Group Ltd | Extraterritorial | 2018 |
| Ktschindia Limited | Professional & scientific | 2013 |
| Kubata C. a. Ltd | Arts & recreation | 2017 |
| Kubro Ltd | Real estate | 2018 |
| Kuemy Limited | Administrative & support | 2016 |
| Kuer International Trading Co., Ltd. | Extraterritorial | 2016 |
| Kujira Limited | Arts & recreation | 2017 |
| Kukairui Limited | Wholesale & retail | 2025 |
| Kukes Ltd | Administrative & support | 2021 |
| Kun-Peng International Trading Co., Ltd. | Extraterritorial | 2014 |
| Kunpeng Huanqiu Import&Export Co., Limited | Extraterritorial | 2022 |
| Kuoshi International Trading Company Limited | Manufacturing | 2021 |
| Kurdam Ltd | Administrative & support | 2011 |
| Kurogane Holly Trade Ltd | Extraterritorial | 2025 |
| Kuzi Co. International Trading Limited | Manufacturing | 2025 |
| KV Consulting Ltd | Real estate | 2025 |
| Kv&C Ltd | Wholesale & retail | 2021 |
| Kyine Tech Ltd | Wholesale & retail | 2024 |
| Kyle Magnetics Co., Ltd | Professional & scientific | 2018 |
| Kylintra Limited | Financial services | 2013 |
| Kyoto Hesheng Co., Ltd | Extraterritorial | 2022 |
| L and E Stationery Gift Ltd. | Manufacturing | 2023 |
| L Terry Construction Limited | Construction | 2012 |
| L W Roofing and Guttering Ltd | Construction | 2024 |
| L&D Automation Ltd | Extraterritorial | 2012 |
| L&G Design Ltd | Other services | 2014 |
| L'Ancresse Villas Limited | Households | 2022 |
| L'Athénée Consulting Ltd | Professional & scientific | 2018 |
| L.T.H Medical Ltd | Wholesale & retail | 2015 |
| LA Chatica Limited | Hospitality | 2014 |
| LA Roanix High-Tech Company Limited | Wholesale & retail | 2021 |
| LA Vannila Limited | Manufacturing | 2026 |
| LA Villaine Ltd | Professional & scientific | 2020 |
| LAB Solution Technology Limited | Extraterritorial | 2015 |
| Labex Instrument Limited | Extraterritorial | 2013 |
| Labnic Equipment Ltd | Manufacturing | 2024 |
| Labo Palace Gift Co., Ltd | Extraterritorial | 2016 |
| Lace (London) Limited | Hospitality | 1992 |
| Lacunae Ltd | Professional & scientific | 2014 |
| Ladeenu Ltd | Wholesale & retail | 2025 |
| Lady BUG Group Ltd | Administrative & support | 2018 |
| Lady T Unscripted Ltd | Arts & recreation | 2025 |
| Ladyan UK Ltd | Wholesale & retail | 2025 |
| Lafino Ltd | Wholesale & retail | 2021 |
| Lahoti Orthopaedics Limited | Health & social care | 2011 |
| Laicai Trade Ltd | Wholesale & retail | 2025 |
| Laisen Clothing Co., Limited | Extraterritorial | 2024 |
| Laiyuan Technology Co., Ltd | Manufacturing | 2025 |
| Lakeside (Flats) Beckenham Limited | Households | 1996 |
| Lala Corporation Limited | Manufacturing | 2024 |
| Lalla Imports Ltd | Wholesale & retail | 2025 |
| LAM Engineering Ltd | Administrative & support | 2024 |
| Lamer Beauty Group Ltd | Extraterritorial | 2017 |
| Lamerock Ltd | Real estate | 2021 |
| Lamlas Ltd | Wholesale & retail | 2022 |
| Lancaster Property & Maintenance Services Limited | Administrative & support | 2013 |
| Lancers of Beckenham Ltd | Wholesale & retail | 2012 |
| Land Rover Cultural Development Limited | Extraterritorial | 2020 |
| Landcharm Limited | Real estate | 1986 |
| Landing Planetary Gearbox Limited | Extraterritorial | 2014 |
| Landwell Group Limited | Extraterritorial | 2023 |
| Landwo International Limited | Extraterritorial | 2023 |
| Laneleads Technology Co Ltd | Extraterritorial | 2014 |
| Lanesra Consulting Ltd | Professional & scientific | 2023 |
| Langdale Management Company Limited | Households | 2003 |
| Langley Estate Agents Limited | Real estate | 2010 |
| Langley Freehold Limited | Households | 2016 |
| Langley Healthcare Ltd | Professional & scientific | 2007 |
| Langley Letting Ltd | Real estate | 2013 |
| Langley Office Services Limited | Administrative & support | 2012 |
| Langley Park Associates Limited | Professional & scientific | 2008 |
| Langley Park Management Company Ltd | Real estate | 2006 |
| Langley Park Wealth Limited | Financial services | 2014 |
| Langley Sports Management Limited | Administrative & support | 2009 |
| Lanqi Co., Ltd | Extraterritorial | 2023 |
| Lanqier (UK) Co., Ltd. | Extraterritorial | 2016 |
| Lanseno Import and Export Co., Ltd | Extraterritorial | 2013 |
| Lantos Business Solutions Limited | Information & communication | 2006 |
| Lanwades Limited | Extraterritorial | 2016 |
| Lanxi Party Crafts Co., Ltd | Extraterritorial | 2013 |
| Lanyi Technology Limited | Professional & scientific | 2025 |
| LAS Cheesecake Ltd | Wholesale & retail | 2023 |
| LAS Lounge Ltd | Wholesale & retail | 2023 |
| Laser-Prime Cleaning Ltd | Construction | 2026 |
| Lash Hub Studio Ltd | Other services | 2019 |
| Late Night People Ltd | Information & communication | 2019 |
| Latrade Imp&Exp Co., Ltd | Wholesale & retail | 2024 |
| Latt Cable Technology Co., Ltd | Manufacturing | 2020 |
| Laual Ltd | Construction | 2024 |
| Laura Lynch Dental Care Limited | Health & social care | 2013 |
| Laurels Management (Biggin Hill) Limited | Households | 2017 |
| Lavender Court Beckenham Management Limited | Households | 2012 |
| Lavender Court Freehold Limited | Real estate | 2020 |