| Krd&S Ltd | Health & social care | 2024 |
| Kreativ Car Hire Ltd | Administrative & support | 2023 |
| Kreativ Kitchens Limited | Wholesale & retail | 2017 |
| Kreative Design Ltd | Construction | 2026 |
| Krebo Professional Services Ltd | Professional & scientific | 2020 |
| KRG IT Consultancy Limited | Professional & scientific | 2018 |
| Krho Ltd | Professional & scientific | 2025 |
| Krimpterm Limited | Wholesale & retail | 2011 |
| Kris MIK Trans Ltd | Transport & logistics | 2018 |
| Kris Secure Management Services Ltd | Administrative & support | 2016 |
| Krish's Niche Stores Limited | Wholesale & retail | 2017 |
| Krishna Anaesthetics Limited | Health & social care | 2024 |
| Krishna Pharm Ltd | Health & social care | 2022 |
| Krishna Spices & Groceries Limited | Wholesale & retail | 2025 |
| Krishnaswamy Limited | Real estate | 2020 |
| Krishnex AI Solution Ltd | Information & communication | 2025 |
| Krishnum Ltd | Information & communication | 2016 |
| Krisnini International Ltd | Extraterritorial | 2015 |
| Krisp Control Ltd | Professional & scientific | 2017 |
| Kristal Leeds Bar Ltd | Hospitality | 2022 |
| Kristian Ward Executive Cars Ltd | Transport & logistics | 2025 |
| Kriteria Limited | Administrative & support | 2015 |
| Krithik Limited | Health & social care | 2022 |
| KRL Group Limited | Administrative & support | 1984 |
| KRN Rentals Ltd | Households | 2024 |
| Krone Forage Solutions Ltd | Wholesale & retail | 2013 |
| Krone UK Ltd | Agriculture & fishing | 2009 |
| KRP Bakery Ltd | Manufacturing | 2025 |
| Krpr Advisory Ltd | Professional & scientific | 2026 |
| KRS Building Merchant Limited | Manufacturing | 2025 |
| Krupps Technology Limited | Information & communication | 2015 |
| KRUZ360BOOTH Ltd | Arts & recreation | 2024 |
| Kruze Ltd | Water & waste | 2025 |
| KRW Designs Ltd | Construction | 2026 |
| KS & MA Developments Limited | Real estate | 2025 |
| KS Aero Services Ltd | Professional & scientific | 2019 |
| KS Civils & Groundworks Ltd | Construction | 2021 |
| KS Holdings Limited | Real estate | 2003 |
| KS Leeds Ltd | Hospitality | 2026 |
| KS Property Partners Ltd | Real estate | 2026 |
| KS Reporting Ltd | Health & social care | 2017 |
| KS Smile Ltd | Health & social care | 2018 |
| KS Trade Limited | Real estate | 2018 |
| KS Tree Properties Ltd | Households | 2026 |
| KS UK Homes Ltd | Real estate | 2024 |
| KS West Construction Ltd | Construction | 2019 |
| KS1-SPV Ltd | Real estate | 2020 |
| KSD Holdings Ltd | Real estate | 2020 |
| Ksem Limited | Professional & scientific | 2017 |
| KSG Support Limited | Professional & scientific | 2024 |
| KSH Flooring Ltd | Construction | 2026 |
| Kshconsult Ltd | Professional & scientific | 2024 |
| Kshj Holdings Ltd | Financial services | 2025 |
| Ksibanda Ltd | Transport & logistics | 2021 |
| KSJ Property Holdings Ltd | Real estate | 2024 |
| KSK Gill Ltd | Wholesale & retail | 2021 |
| KSK Leeds Ltd | Real estate | 2021 |
| KSL Building and Roofing Ltd | Construction | 2025 |
| KSM Plumbing Ltd | Construction | 2017 |
| KSM Property Solutions Ltd | Real estate | 2025 |
| Ksmc Autos Limited | Wholesale & retail | 2025 |
| KSN Radiology Ltd | Health & social care | 2019 |
| KSO Mortgage Brokers Limited | Financial services | 2024 |
| KSS Group Ltd | Administrative & support | 2026 |
| Kstays Ltd | Hospitality | 2021 |
| KSW Flooring Ltd | Construction | 2024 |
| KT Motor-Uk Ltd | Wholesale & retail | 2024 |
| KT Strategic Counsel Limited | Professional & scientific | 2026 |
| Ktbb Limited | Wholesale & retail | 2013 |
| Ktbh Limited | Professional & scientific | 2012 |
| Ktee Corporation Ltd | Other services | 2025 |
| Ktlr Technical Services Ltd | Administrative & support | 2016 |
| KTM Chupa Ltd | Administrative & support | 2025 |
| KTM Media Ltd | Professional & scientific | 2024 |
| KTO Accountancy Limited | Professional & scientific | 2020 |
| KTS Wire International Limited | Extraterritorial | 2013 |
| KTS Wire Limited | Extraterritorial | 2008 |
| KTT Supply Limited | Wholesale & retail | 2023 |
| Ktwl Ltd | Professional & scientific | 2026 |
| Kuanihouse Limited | Hospitality | 2025 |
| Kubair Ltd | Real estate | 2022 |
| Kube Enterprises Ltd | Real estate | 2018 |
| Kubrai Sparkle & Cleaning Services Ltd | Administrative & support | 2025 |
| Kubs Holding Ltd | Extraterritorial | 2018 |
| Kudos ID Ltd | Professional & scientific | 2021 |
| Kudu Search Careers Ltd | Administrative & support | 2021 |
| Kueen of Clouds Ltd | Wholesale & retail | 2024 |
| Kuka Sports Ltd | Wholesale & retail | 2017 |
| Kukes Properties Ltd | Real estate | 2025 |
| Kuki & KO Limited | Wholesale & retail | 2023 |
| Kulara Properties Ltd | Real estate | 2023 |
| Kulik Consultancy (UK) Limited | Professional & scientific | 2021 |
| Kulthea Limited | Information & communication | 2015 |
| Kulture Gelato Ltd | Manufacturing | 2022 |
| Kumacol Residences Ltd | Real estate | 2025 |
| Kumane Ltd | Wholesale & retail | 2024 |
| Kumara Anaesthesia Ltd | Health & social care | 2022 |
| Kumba's Forwarding Limited | Transport & logistics | 2020 |
| Kumba's Health Care Limited | Health & social care | 2021 |
| Kumoye & Co Limited | Administrative & support | 2017 |