| Kappa Solar Holdings Limited | Financial services | 2024 |
| Kaprion Tech Limited | Information & communication | 2025 |
| KAR 1 Barber Ltd | Other services | 2025 |
| Karag Holdings Limited | Financial services | 2012 |
| Karaoglan Investments Ltd | Real estate | 2022 |
| Karavelo Ltd | Information & communication | 2018 |
| Karbon Properties Ltd | Manufacturing | 2025 |
| Karby Cleaning Ltd | Administrative & support | 2025 |
| Kard Logistics Ltd. | Transport & logistics | 2018 |
| Kardesign Limited | Information & communication | 2015 |
| Kareem Trading Limited | Wholesale & retail | 2020 |
| Kargros Ltd | Administrative & support | 2019 |
| Karheald Limited | Wholesale & retail | 1986 |
| Karka Transport Ltd | Transport & logistics | 2018 |
| Karliova Kebab Limited | Hospitality | 2019 |
| Karma Security Solutions Ltd | Administrative & support | 2020 |
| Karno-Skarbowe.Pl Ltd. | Administrative & support | 2025 |
| Karpol Limited | Transport & logistics | 2017 |
| Karter Y Productions Limited | Arts & recreation | 2012 |
| Karvelis Ltd | Transport & logistics | 2025 |
| Karz Logistics Solutions Ltd | Transport & logistics | 2023 |
| Kasan Properties Limited | Real estate | 2016 |
| Kashmir Continental Store Ltd | Wholesale & retail | 2019 |
| Kashmiri Pehnawa Ltd | Wholesale & retail | 2025 |
| Kasos Ltd | Transport & logistics | 2019 |
| Kaspas Peterborough Limited | Hospitality | 2019 |
| Kasseopia Limited | Financial services | 2025 |
| Kassero (Edible Oils) Limited | Extraterritorial | 2001 |
| Katak Financial Solution Limited | Professional & scientific | 2026 |
| Katan Constructions Limited | Construction | 2024 |
| Kate Luxe Living Ltd | Hospitality | 2026 |
| Katerino | Financial services | 2022 |
| Kates Cabin Limited | Hospitality | 2018 |
| Kathon Healthcare Ltd | Health & social care | 2022 |
| Katie Atkinson Nutrition Ltd | Health & social care | 2014 |
| Katie Hart Ltd | Administrative & support | 2008 |
| KATYDIDNEXT123 Ltd | Health & social care | 2022 |
| Katyia Ltd | Administrative & support | 2019 |
| Kaur Aesthetics Limited | Health & social care | 2020 |
| Kavtec Technical Services Ltd | Administrative & support | 2023 |
| Kawio Transport Ltd | Transport & logistics | 2014 |
| Kawldron Ltd | Information & communication | 2025 |
| KAY N KAY Corporation Limited | Health & social care | 2014 |
| Kaya Store Ltd | Wholesale & retail | 2011 |
| Kayaans Properties Ltd | Construction | 2025 |
| Kayjcee Healthcare Ltd | Health & social care | 2018 |
| Kaylane Distribution Limited | Wholesale & retail | 2022 |
| Kaytob Ltd | Wholesale & retail | 2025 |
| Kayzin Home Solutions Ltd | Hospitality | 2024 |
| Kaza Real State Ltd | Construction | 2017 |
| Kazam Risk Consultancy Limited | Professional & scientific | 2015 |
| Kazben Assets Ltd | Real estate | 2026 |
| KAZEK1983 Limited | Other services | 2018 |
| Kazim Properties Ltd | Real estate | 2018 |
| KAZIMPROPERTIES1 Ltd | Real estate | 2024 |
| KB Demolition Ltd | Construction | 2023 |
| KB Property Investment Partners Ltd | Real estate | 2025 |
| KB Tuition Limited | Education | 2023 |
| KBC Services Limited | Construction | 2023 |
| KBE Installations & Building Services Ltd | Construction | 2022 |
| KBM Service-Transport Limited | Transport & logistics | 2014 |
| KC Castles Ltd | Administrative & support | 2024 |
| KCH Foods Limited | Hospitality | 2018 |
| KCK9 Clips Limited | Professional & scientific | 2022 |
| KCM Training Limited | Education | 2013 |
| KD Digital Consultancy Ltd | Information & communication | 2025 |
| KD International Foods Limited | Agriculture & fishing | 2024 |
| KD Javaid Limited | Transport & logistics | 2026 |
| KD Trans Ltd | Administrative & support | 2013 |
| Kdag Properties Ltd | Real estate | 2025 |
| Kdel Systems Limited | Information & communication | 2003 |
| Kdhp Limited | Other services | 2017 |
| Kdhp Professional Services Limited | Other services | 2023 |
| KDN Property Ltd | Real estate | 2023 |
| KDS Blastcleaning and Protective Coatings Limited | Construction | 1994 |
| KEA Exterior Cleaning Limited | Administrative & support | 2025 |
| KEA Window Cleaning Ltd | Administrative & support | 2025 |
| Kean Properties (UK) Limited | Real estate | 2005 |
| Keco Body Repair Products Ltd | Wholesale & retail | 2021 |
| Keco Holdings Limited | Financial services | 2021 |
| Keemaya Kitchen Ltd | Hospitality | 2025 |
| Keenan Leon Moore Ltd | Wholesale & retail | 2026 |
| Keentrade Ltd | Wholesale & retail | 2025 |
| Keeping HR Simple Limited | Administrative & support | 2009 |
| Keepz Sports Ltd | Arts & recreation | 2025 |
| Keez Hospitality & Education Limited | Hospitality | 2025 |
| Kefas Solutions Ltd | Wholesale & retail | 2024 |
| Keith Markham Limited | Education | 2013 |
| Keith Miller Accountancy Services Ltd | Professional & scientific | 2012 |
| Keith Park Road Residents Company Limited | Households | 2009 |
| Kelladale Limited | Wholesale & retail | 2025 |
| Kellen Global Limited | Professional & scientific | 2021 |
| Kelly's News Agent Ltd | Wholesale & retail | 2024 |
| Kels - Touch Ltd | Administrative & support | 2026 |
| Kelsall Estate Ltd | Real estate | 2022 |
| KEN Engineering Services Limited | Professional & scientific | 2022 |
| KEN Logistics & Transport Limited | Transport & logistics | 2026 |
| KEN Thomas Transport Limited | Transport & logistics | 2017 |
| Kenda Properties Ltd | Real estate | 2024 |
| Kendall Lash Ltd | Wholesale & retail | 2026 |