| Kim's Asian Ltd | Wholesale & retail | 2026 |
| Kim's Korean Fusion Ltd | Wholesale & retail | 2026 |
| Kim's Nail Bar Ltd | Other services | 2022 |
| Kimlyn Transport Ltd | Transport & logistics | 2018 |
| Kimmi Ltd | Real estate | 2024 |
| KIN Facilities Management Ltd | Administrative & support | 2024 |
| Kinaie Ltd | Professional & scientific | 2025 |
| Kindon Ltd | Wholesale & retail | 2020 |
| Kinetic Management Ltd | Professional & scientific | 2019 |
| Kinetic Tax Ltd | Professional & scientific | 2004 |
| Kinetic Utilities Limited | Energy | 2022 |
| Kinetix AI Labs Ltd | Information & communication | 2026 |
| Kinetix Consulting Limited | Professional & scientific | 2015 |
| Kinfauns Road Ltd | Real estate | 2023 |
| King Motors Limited | Wholesale & retail | 2017 |
| Kingdom Law Ltd | Professional & scientific | 2017 |
| Kingdoms Estates Limited | Real estate | 2025 |
| Kingly Capital Ltd | Administrative & support | 2006 |
| Kings Prestige Plastering Ltd | Construction | 2024 |
| Kingsbury Investment & Development Group Ltd | Real estate | 2021 |
| Kingsbury Land Promotion Limited | Construction | 2025 |
| Kingsize Fitzgerald Ltd | Wholesale & retail | 2016 |
| Kingsland Road SPV Limited | Real estate | 2016 |
| Kingsland Stradbroke Management Ltd | Real estate | 2014 |
| Kingsley Hart Ltd | Administrative & support | 2025 |
| Kingsmead Business Solutions Limited | Education | 2017 |
| Kingsmen Securities Ltd | Financial services | 2019 |
| Kingster Immigration Consultants Ltd | Professional & scientific | 2025 |
| Kingston Vision Clinic Limited | Health & social care | 2023 |
| Kingstonvale Limited | Hospitality | 1984 |
| Kingsway Haulage Limited | Transport & logistics | 2020 |
| Kingsway Partners Limited | Professional & scientific | 2009 |
| Kinksend Limited | Real estate | 2020 |
| Kinkyfro Botanicals Limited | Wholesale & retail | 2018 |
| Kinnerton Enterprise Limited | Other services | 2019 |
| Kinnerton Rose Limited | Other services | 2015 |
| Kinsbond Limited | Construction | 2009 |
| Kinsbond Special Works Ltd | Administrative & support | 2013 |
| Kinsford Equity Group Ltd | Financial services | 2026 |
| Kinsora Ltd | Wholesale & retail | 2025 |
| Kinswell Capital Ltd | Financial services | 2026 |
| Kinswiss Ltd | Wholesale & retail | 2025 |
| Kinth Square Ltd | Construction | 2021 |
| Kipe Capital LLP | | 2017 |
| Kira Homes Ltd | Real estate | 2013 |
| Kira Realty Ltd | Real estate | 2021 |
| Kiran Properties Limited | Real estate | 2016 |
| KIRAN1986 Ltd | Construction | 2025 |
| Kirat IT Limited | Information & communication | 2012 |
| Kiratbuilders Ltd | Manufacturing | 2025 |
| Kirk Accountants Limited | Professional & scientific | 2025 |
| Kirkland Digital Limited | Information & communication | 2023 |
| Kirklease Hamilton Limited | Other services | 2023 |
| Kirma Property Consultancy Ltd | Real estate | 2025 |
| Kiroplastio Thyateiron Limited | Manufacturing | 2026 |
| Kirpa Realtors Ltd | Real estate | 2021 |
| Kirvik Services Limited | Health & social care | 2026 |
| Kishan Doal Property Ltd | Real estate | 2025 |
| Kishansaujani Ltd | Professional & scientific | 2019 |
| Kishone Ltd | Extraterritorial | 2024 |
| Kisitu Transport Ltd | Transport & logistics | 2021 |
| Kismat Properties Ltd | Real estate | 2019 |
| Kismo Tech Ltd | Manufacturing | 2017 |
| Kisshans Investments Ltd | Real estate | 2021 |
| Kiswah Tours & Travel Ltd | Administrative & support | 2025 |
| KIT LAB Ltd | Administrative & support | 2017 |
| KIT OUT London Community Club C.I.C. | Manufacturing | 2023 |
| Kitchen Bliss Limited | Wholesale & retail | 2024 |
| Kitchenette Lounge Ltd | Hospitality | 2019 |
| Kitchens ARE US Ltd | Manufacturing | 2008 |
| Kitno Limited | Wholesale & retail | 2022 |
| Kittiwake Marine Ltd | Transport & logistics | 2021 |
| Kitto Estates Limited | Real estate | 2020 |
| Kitty KAT Holdings Ltd | Real estate | 2022 |
| Kiwi Gardens Entertainment Ltd | Hospitality | 2018 |
| KJ & JP Properties Limited | Real estate | 2024 |
| KJ Cleans Ltd | Administrative & support | 2025 |
| KJ Roofing Ltd | Construction | 2018 |
| Kjbm Consulting Limited | Education | 2025 |
| KJJ Motors Limited | Wholesale & retail | 2019 |
| KJM Construction Ltd | Construction | 2026 |
| KK Bros Ltd | Hospitality | 2018 |
| KK Consultants Group Limited | Manufacturing | 2021 |
| KK Hair & Beauty Ltd | Other services | 2024 |
| KK International Services Ltd | Wholesale & retail | 2021 |
| KK the Dentist Limited | Health & social care | 2021 |
| Kkim Ltd | Hospitality | 2011 |
| KKK Care Limited | Health & social care | 2022 |
| KKM Real Estates Ltd | Real estate | 2021 |
| KKN Brothers Ltd | Transport & logistics | 2018 |
| KKS Enterprises Ltd | Information & communication | 2018 |
| KL Communiications Ltd | Education | 2024 |
| Klad Mortgage Services Ltd | Financial services | 2020 |
| Klara-London Ltd | Manufacturing | 2023 |
| Klaudd Day Spa Ltd | Other services | 2012 |
| Klaudd Ltd | Wholesale & retail | 2020 |
| Klblb Ltd | Construction | 2026 |
| Kleana Homes Ltd | Administrative & support | 2025 |
| Klenro Ltd | Information & communication | 2023 |
| Klenz Kleen Ltd | Administrative & support | 2026 |