| Kinglets Ltd | Hospitality | 2025 |
| Kings Gate Residents Limited | Households | 2002 |
| Kings ROW Management (Maidstone) Limited | Real estate | 1990 |
| Kingscote Rojay Limited | Transport & logistics | 1993 |
| Kirk Property Solutions (London) Ltd | Construction | 2023 |
| Kismar CDA Limited | Extraterritorial | 2010 |
| Kismet Kebab Crawley Ltd | Hospitality | 2015 |
| Kiss Properties (Gatwick) Limited | Real estate | 2023 |
| Kiss Properties (Mayfair) Ltd | Households | 2024 |
| Kissala Healthcare Services Limited | Health & social care | 2016 |
| Kitchen Royale Ltd | Hospitality | 2021 |
| Kiyan Holdings Ltd | Transport & logistics | 2026 |
| KJ Industries Ltd | Wholesale & retail | 2019 |
| KJR Assets Ltd | Real estate | 2024 |
| KK International Traders Ltd | Wholesale & retail | 2024 |
| KKA Property Limited | Real estate | 2020 |
| KKS Property Limited | Professional & scientific | 2023 |
| KKS Real Estate Group Limited | Professional & scientific | 2025 |
| KL Heritage LLP | | 2001 |
| Klassyx Ltd | Wholesale & retail | 2024 |
| Klcc Limited | Hospitality | 2021 |
| KLT Groundworks Limited | Construction | 2022 |
| KM Focus Accountancy Services Ltd | Professional & scientific | 2012 |
| KMA Building Services Ltd | Construction | 2023 |
| KMC Autoz Electronic Ltd | Wholesale & retail | 2023 |
| KMC Autoz Ltd | Wholesale & retail | 2016 |
| KMK Trade Ltd | Wholesale & retail | 2023 |
| KMT Aviation Ltd | Manufacturing | 2025 |
| KN IT World. Ltd | Information & communication | 2013 |
| Knight Design & Build Limited | Construction | 2016 |
| Knight Star Solutions Ltd | Information & communication | 2018 |
| Knight's Ice Cream Ltd | Hospitality | 2025 |
| Knightfly Properties Limited | Real estate | 2002 |
| Knights Imports and Exports Ltd | Wholesale & retail | 2013 |
| Knits Unique Ltd | Wholesale & retail | 2026 |
| Knoreach Media Ltd | Information & communication | 2026 |
| Knowinghim Ltd | Other services | 2026 |
| KNT ( Kindling N Things ) Ltd | Wholesale & retail | 2010 |
| KOA Cabins Limited | Hospitality | 2025 |
| Kodan Enterprises Limited | Construction | 2021 |
| Koezie Ltd | Information & communication | 2024 |
| Kohplanner Ltd | Information & communication | 2025 |
| Kojo Tbonka Ltd | Wholesale & retail | 2024 |
| Kojo Tbonka Properties Ltd | Real estate | 2025 |
| Koko Cabins Limited | Extraterritorial | 2023 |
| Kokoro Crawley Limited | Hospitality | 2017 |
| Kola ENT Ltd | Arts & recreation | 2026 |
| Kolibri PMC Ltd | Professional & scientific | 2021 |
| KOM Hub Ltd | Information & communication | 2025 |
| Komodus Ltd | Transport & logistics | 2019 |
| Korrect Group Limited | Wholesale & retail | 2026 |
| Kosa Speed Limited | Administrative & support | 2025 |
| KP Consultancy and Services Limited | Professional & scientific | 2017 |
| KP Trans Ltd | Transport & logistics | 2024 |
| KPR Dwellings Ltd | Real estate | 2024 |
| KPR Partners Limited | Financial services | 2022 |
| KR Legal Services Limited | Professional & scientific | 2025 |
| KR Property Development Ltd | Construction | 2026 |
| Kras&Go Ltd | Construction | 2025 |
| Kreena Dhiman Ltd | Professional & scientific | 2022 |
| Kreol Connect Services CIC | Professional & scientific | 2025 |
| Kriener Ltd | Professional & scientific | 2025 |
| Kriphos Ltd | Real estate | 2020 |
| Krishan Limited | Wholesale & retail | 2015 |
| Krishna Book Keeping Services Ltd | Professional & scientific | 2012 |
| Krishna Ruby Limited | Hospitality | 2014 |
| Kristal Delivery Ltd | Transport & logistics | 2020 |
| Krnex Ltd | Administrative & support | 2025 |
| KRT Tips & Tricks Ltd | Wholesale & retail | 2022 |
| Krudewig GmbH Ltd | Manufacturing | 2024 |
| Kruthi Home Stays Limited | Hospitality | 2026 |
| KSB Solutions Ltd | Professional & scientific | 2008 |
| Ksenia Design Ltd | Transport & logistics | 2020 |
| KSH Enterprises Ltd | Real estate | 2024 |
| KSH London Trading Ltd | Wholesale & retail | 2017 |
| KSK Food & Wine Crawley Ltd | Wholesale & retail | 2022 |
| Ktrendzzz Limited | Other services | 2020 |
| Kuanta Ltd | Professional & scientific | 2014 |
| Kubus Polish Shop Ltd | Wholesale & retail | 2011 |
| Kudasaru Limited | Professional & scientific | 2012 |
| Kufcare Cleaning Services Ltd | Administrative & support | 2024 |
| Kufida Ltd | Hospitality | 2025 |
| Kukuya Kitchen Ltd | Wholesale & retail | 2020 |
| Kunfen Limited | Real estate | 2026 |
| Kvirk Transportation Ltd | Transport & logistics | 2024 |
| KWD Compliance Ltd | Professional & scientific | 2024 |
| Kwesonty Recruitment Limited | Administrative & support | 2023 |
| Kwik Move Limited | Transport & logistics | 2012 |
| L a Matthews Limited | Real estate | 2018 |
| L Bloc X Ltd | Professional & scientific | 2026 |
| L C Creed & Co Ltd | Hospitality | 2022 |
| L Kett Services Ltd | Administrative & support | 2017 |
| L L Tree Surgery Ltd | Administrative & support | 2025 |
| L M Construction Properties Ltd | Construction | 2023 |
| L R Laser and Skin Limited | Other services | 2025 |
| L Saunders Building Services Ltd | Construction | 2022 |
| L T Associates Ltd | Health & social care | 2010 |
| L&K One Touch Cleaning Ltd | Administrative & support | 2019 |
| L&P Companion Care Services Ltd | Administrative & support | 2022 |
| L&S Logistics Limited | Transport & logistics | 2023 |