| Kingsman Advisory Ltd | Professional & scientific | 2017 |
| Kingston Infosys Ltd | Information & communication | 2018 |
| Kingsway Associates Limited | Professional & scientific | 2023 |
| Kinj Investments Limited | Real estate | 2020 |
| Kinj Ltd | Wholesale & retail | 2011 |
| Kinka Property Ltd | Real estate | 2021 |
| Kinnovat Ltd | Construction | 2018 |
| Kins Peri Peri Ltd | Hospitality | 2025 |
| Kinvas Properties Limited | Real estate | 2017 |
| Kinza Group Ltd | Information & communication | 2019 |
| Kips Tutors Ltd | Education | 2025 |
| Kiran Fashions Ltd | Wholesale & retail | 2010 |
| Kiran Logistics Ltd | Transport & logistics | 2024 |
| Kirat Haulage Limited | Transport & logistics | 2025 |
| Kirkbell Limited | Information & communication | 2020 |
| Kirpa Guru Ltd | Real estate | 2020 |
| Kirpa IT Ltd | Wholesale & retail | 2026 |
| Kirpa Property 3 Ltd | Construction | 2024 |
| Kirpal Building Construction Ltd | | 2012 |
| Kirthika Chicken Cottage Ltd | Hospitality | 2026 |
| Kisha OFF Licence Ltd | Wholesale & retail | 2024 |
| Kishan Catering Ltd | Hospitality | 2023 |
| Kisho Convenience Store Limited | Wholesale & retail | 2025 |
| Kisima Cargo Ltd | Transport & logistics | 2022 |
| Kismat Property Ltd | Real estate | 2026 |
| Kiswah Tours Limited | Administrative & support | 2022 |
| Kitchen Corner Ltd | Hospitality | 2021 |
| Kitchen Discount Code Ltd | Manufacturing | 2022 |
| Kitchen Utensils Ltd | Wholesale & retail | 2025 |
| Kite Tangle Limited | Information & communication | 2025 |
| Kiva Financial Services Limited | Professional & scientific | 2025 |
| Kivs International Ltd | Wholesale & retail | 2016 |
| Kizzkartel Ltd | Wholesale & retail | 2025 |
| KJK Capital Limited | Real estate | 2025 |
| KK Insvestments Limited | Households | 2020 |
| Kkaur Transport Ltd | Transport & logistics | 2020 |
| KKH Limited | Transport & logistics | 2025 |
| KKJ Transport Limited | Transport & logistics | 2023 |
| Kkjr Limited | Wholesale & retail | 2009 |
| KKN Property Limited | Real estate | 2025 |
| KKR Multi Business UK Limited | Construction | 2018 |
| KL Heating Limited | Construction | 2015 |
| KLA Management Limited | Health & social care | 2009 |
| Klair Trading Ltd | Transport & logistics | 2012 |
| KLC Contracting Ltd | Construction | 2014 |
| KLD Telecoms Limited | Information & communication | 2022 |
| Klick & Kart Ltd | Wholesale & retail | 2024 |
| Kline Design Limited | Professional & scientific | 2025 |
| Kliptech Ltd | Information & communication | 2026 |
| Klje Ltd | Construction | 2025 |
| Kllsa Ltd | Financial services | 2022 |
| KLS Passive Fire Protection Limited | Construction | 2025 |
| KM Carpets Ltd | Wholesale & retail | 2023 |
| Kmia Ltd | Other services | 2021 |
| KML Solutions Ltd | Wholesale & retail | 2025 |
| KML Tech Ltd | Information & communication | 2025 |
| Kmrahm Ltd | Real estate | 2025 |
| Kmtf Limited | Information & communication | 2018 |
| KMV Homes Ltd | Real estate | 2025 |
| KMZ Property Ltd | Real estate | 2025 |
| Knighton Bond Group Ltd | Administrative & support | 2024 |
| Knighton Bond Limited | Information & communication | 2023 |
| Knights Property Investments Ltd | Other services | 2012 |
| Knightsbridge Maintenance Ltd | Construction | 2023 |
| Knightsbridge Mortgages Limited | Financial services | 2023 |
| KNK Electrical Limited | Wholesale & retail | 2001 |
| Knockam Ltd | Real estate | 2022 |
| Knowledge Base Ltd | Professional & scientific | 2015 |
| Knowledge Navigators Umrah Limited | Extraterritorial | 2024 |
| Knowledgemax Ltd | Education | 2018 |
| Koan Solar Limited | Construction | 2024 |
| Kohar Properties Limited | Real estate | 2023 |
| Kohli Property Investments Ltd | Real estate | 2020 |
| Koirala Housing Ltd | Real estate | 2025 |
| Kokri Transport Limited | Transport & logistics | 2017 |
| Komi Cars and Parts Ltd | Water & waste | 2023 |
| Komo Umami Cardiff Limited | Hospitality | 2026 |
| Kooku Digital Limited | Information & communication | 2019 |
| Kopernik Holdings Ltd | Financial services | 2021 |
| Kormoran Consultancy Ltd | Administrative & support | 2011 |
| Kors Design Limited | Wholesale & retail | 2021 |
| Kosomax Ltd | Wholesale & retail | 2015 |
| Kour Services Ltd | Wholesale & retail | 2024 |
| Kozmose Ltd | Information & communication | 2025 |
| KP Logistics Ltd | Transport & logistics | 2013 |
| KP Property Management Limited | Real estate | 2011 |
| KPH Construction Ltd | Construction | 2023 |
| Kpritchie Consultancy Limited | Professional & scientific | 2014 |
| Kprpr Ltd | Households | 2024 |
| Kpsm Investment Ltd | Real estate | 2025 |
| KPT Wood & Stone Constructing Ltd | Construction | 2026 |
| Kraft Kitchen Furnitures Limited | Construction | 2016 |
| Kraft Wardrobe Ltd | Manufacturing | 2023 |
| KRB Haulage Limited | Transport & logistics | 2022 |
| KRB Service Limited | Construction | 2025 |
| Kripa Investments Limited | Real estate | 2010 |
| Krish SEN Limited | Real estate | 2025 |
| Krisna Foods Ltd | Hospitality | 2023 |
| Kriss 2016 Ltd | Construction | 2018 |
| Kriti Construction Ltd | Construction | 2019 |