| Key Developments 8 Ltd | Construction | 2021 |
| Key Developments 9 Ltd | Construction | 2021 |
| Key Developments Associates Ltd | Construction | 2021 |
| Key Developments Holdings Limited | Construction | 2021 |
| Key Property Portfolio Ltd | Real estate | 2026 |
| Key Vision Property Sourcing Ltd | Real estate | 2024 |
| Keyhouse Ltd | Real estate | 2019 |
| Keyline Holdings Ltd | Real estate | 2024 |
| Keyport Properties Ltd | Real estate | 2024 |
| Keystone Food Group Ltd | Hospitality | 2025 |
| KG Agricultural Contracting Ltd | Agriculture & fishing | 2019 |
| KG Therapy Limited | Health & social care | 2025 |
| KGA Property Investment Ltd | Real estate | 2025 |
| KGH Building Services Ltd | Construction | 2022 |
| KGN Mobile Recyling Ltd | Wholesale & retail | 2022 |
| KGP Holdings Limited | Real estate | 2019 |
| KGR Futures Ltd | Households | 2023 |
| KGS Holdings Ltd | Real estate | 2025 |
| Kgsm Limited | Transport & logistics | 2022 |
| Khair Makes Khair FDN C.I.C. | Extraterritorial | 2023 |
| Khaki Properties Limited | Real estate | 2025 |
| Khalfe (HK) Limited | Real estate | 2022 |
| Khalfe Limited | Real estate | 2017 |
| Khalifamkh Ltd | Wholesale & retail | 2024 |
| Khalsa Infraworks Limited | Construction | 2025 |
| Khan & Shah Holdings Limited | Real estate | 2026 |
| Khan's Kitchen Ltd | Hospitality | 2021 |
| Khan's Restaurant & Grill Limited | Hospitality | 2020 |
| Khana Khazana Hospitality Ltd | Hospitality | 2024 |
| Khand Beauty Aesthetic Ltd | Wholesale & retail | 2026 |
| Khasria Couriers Ltd | Transport & logistics | 2014 |
| Khatkar Consultancy Ltd | Information & communication | 2024 |
| Khatun Solutions Ltd | Professional & scientific | 2025 |
| Khela Medical Group Limited | Health & social care | 2015 |
| Khemicare Limited | Health & social care | 2018 |
| Khera Exclusive Limited | Wholesale & retail | 2022 |
| Khera Oils Limited | Water & waste | 2024 |
| Khev Service Ltd | Transport & logistics | 2019 |
| KHH Real Estate Limited | Real estate | 2024 |
| KHNUT25 Ltd | Hospitality | 2025 |
| KHP2 Limited | Hospitality | 2023 |
| KHS Homes Ltd | Real estate | 2023 |
| KHX Ltd | Professional & scientific | 2024 |
| Khyber Darbar Walsall Limited | Hospitality | 2026 |
| KIA Solutions Limited | Real estate | 2025 |
| Kians Kreps Ltd | Wholesale & retail | 2025 |
| Kiddies Playhouse Ltd | Education | 2019 |
| Kiekellartool Ltd | Construction | 2025 |
| Kiini Limited | Hospitality | 2021 |
| Killeen Properties LLP | | 2015 |
| Killer Whale Ltd | Manufacturing | 2018 |
| Kimson Engineering Limited | Other services | 2010 |
| KINCAID1875 Limited | Hospitality | 2016 |
| Kind Logistics Ltd | Transport & logistics | 2024 |
| Kindnestspace Ltd | Administrative & support | 2025 |
| King COD Chippy Ltd | Hospitality | 2023 |
| King Machine Tool Services Ltd | Manufacturing | 2018 |
| Kingdom Automation Limited | Construction | 2026 |
| Kingfisher Blinds & Curtains Limited | Manufacturing | 1995 |
| Kingsbury JET Bike Centre Ltd | Arts & recreation | 2006 |
| Kingshill Solutions Limited | Financial services | 2010 |
| Kingsmanz Electrical Ltd | Construction | 2026 |
| Kingsmen Property Sourcing Ltd | Construction | 2021 |
| Kingswood Kitchens Limited | Construction | 2022 |
| Kion Healthcare Ltd | Administrative & support | 2021 |
| Kiondo C.I.C. | Manufacturing | 2017 |
| Kirans Events Ltd | Hospitality | 2021 |
| Kirby Solutions Limited | Information & communication | 2010 |
| Kirk Yates Building Ltd | Construction | 2017 |
| Kirkby Steel Tubes Limited | Wholesale & retail | 1966 |
| Kirkpatrick Ironworks Limited | Manufacturing | 2020 |
| Kirmet 3D Design Ltd | Professional & scientific | 2026 |
| Kirpa Property Services Limited | Construction | 2026 |
| Kirve IT Ltd | Information & communication | 2025 |
| Kitchenco Ltd | Construction | 2008 |
| Kittysitty Cat Behaviourist Ltd | Other services | 2026 |
| Kiyaan Law Ltd | Professional & scientific | 2025 |
| KJ Hold Co Ltd | Financial services | 2021 |
| KJ Legal Ltd | Professional & scientific | 2025 |
| KJ Property Developments Limited | Construction | 2024 |
| KK Tyres (WM) Ltd | Wholesale & retail | 2022 |
| KK5 Properties Limited | Real estate | 2023 |
| KKH Services Limited | Construction | 2019 |
| Kkhh Ltd | Health & social care | 2020 |
| KKK Investments Ltd | Information & communication | 2019 |
| KKM Ltd | Hospitality | 2022 |
| KL Education Consultants Limited | Education | 2016 |
| Klair DOC Limited | Health & social care | 2022 |
| Klbl Ltd | Construction | 2026 |
| Kleaned Limited | Administrative & support | 2021 |
| Kler Moore Investments Limited | Real estate | 2024 |
| Klintra O.L Limited | Transport & logistics | 2023 |
| Klips Social Media Marketing Ltd | Information & communication | 2025 |
| KLM Technology Ltd | Real estate | 2018 |
| Klowwed Ltd | Hospitality | 2025 |
| KLP Properties Limited | Real estate | 2014 |
| KM Holdings & Trading Limited | Financial services | 2026 |
| Kmgmusic Ltd | Manufacturing | 2026 |
| KML Logistics Ltd | Transport & logistics | 2020 |
| Kmlocum Ltd | Health & social care | 2015 |