| K. Pacey Brickwork Limited | Construction | 1997 |
| K. Sellers Plumbing & Heating Limited | Construction | 2006 |
| K.A. Electro Services Ltd. | Real estate | 2013 |
| K.A.F.E Housing Solutions Ltd | Real estate | 2019 |
| K.C.A.Builders Limited | Construction | 2016 |
| K.H. Construction Service Ltd | Construction | 2023 |
| K.Mac INT Ltd | Other services | 2024 |
| K.N UK Services Ltd | Administrative & support | 2021 |
| K.P. Building Limited | Construction | 2020 |
| K.S.Riya Ltd | Wholesale & retail | 2026 |
| K.Y.I Holdings Ltd | Real estate | 2019 |
| K1-ED Ltd | Education | 2018 |
| K10 Motors Limited | Wholesale & retail | 2025 |
| K2CONTRACTORS Ltd | Construction | 2025 |
| K2K Kashmir to Kanyakumari Limited | Hospitality | 2023 |
| K4NG Construction Limited | Construction | 2025 |
| K9 Security Force Ltd | Administrative & support | 2024 |
| K9 Frost Ltd | Administrative & support | 2024 |
| K9 Protect Ltd | Administrative & support | 2024 |
| K9 Response Team Ltd | Transport & logistics | 2023 |
| K9COVER Ltd | Financial services | 2020 |
| K9PERUN Ltd | Administrative & support | 2019 |
| K9RAWMEAT Ltd | Wholesale & retail | 2024 |
| KA Automotive Ltd | Wholesale & retail | 2026 |
| KA Carpentry Ltd | Manufacturing | 2025 |
| KA Express Limited | Hospitality | 2019 |
| KA Homes Limited | Construction | 2020 |
| Kaan Engineering Ltd | Professional & scientific | 2019 |
| Kaan Legal Ltd | Administrative & support | 2025 |
| Kaaya Limited | Other services | 2023 |
| Kaazz Ltd | Wholesale & retail | 2025 |
| Kabi Limited | Manufacturing | 1995 |
| Kabir Construction Ltd | Construction | 2026 |
| Kabir Healthcare Limited | Health & social care | 2026 |
| Kabir Investments Ltd | Real estate | 2016 |
| Kabz Consultancy and Training Ltd | Real estate | 2025 |
| KAC Music Group Limited | Information & communication | 2023 |
| Kacha Bazar Limited | Wholesale & retail | 2023 |
| Kachero Senge Ltd | Transport & logistics | 2020 |
| Kachi Ltd | Wholesale & retail | 2025 |
| Kadam Asian Dance and Music Limited | Arts & recreation | 1995 |
| KAE Service Ltd | Construction | 2018 |
| Kael Construction Ltd | Construction | 2026 |
| Kafe 375 Ltd | Hospitality | 2025 |
| Kahnova Capital Ltd | Financial services | 2025 |
| Kahwa Cafe 2 Ltd | Hospitality | 2025 |
| Kahwa Café Ltd | Manufacturing | 2024 |
| KAI G Foods Ltd | Hospitality | 2026 |
| Kaija Wellness and Beauty Therapy Limited | Other services | 2019 |
| Kailvora International Ltd | Wholesale & retail | 2026 |
| Kainos Care Ltd | Health & social care | 2022 |
| Kairav Essentials Ltd | Wholesale & retail | 2025 |
| Kairos Wedding Ltd | Hospitality | 2026 |
| Kaiyamae Beauty Ltd | Wholesale & retail | 2019 |
| Kaizen Analytics Limited | Information & communication | 2007 |
| Kaizen LAB Ltd | Wholesale & retail | 2016 |
| Kaizen Realty Limited | Real estate | 2024 |
| Kaja Limited | Administrative & support | 2019 |
| KAK Investment Property Limited | Real estate | 2025 |
| Kakaboy Limited | Transport & logistics | 2019 |
| Kakada Limited | Health & social care | 2020 |
| Kala Vairava Limited | Wholesale & retail | 2026 |
| Kalar Grocery Ltd | Wholesale & retail | 2025 |
| Kaldamac Ltd | Construction | 2025 |
| Kaliber Consultants Limited | Information & communication | 1995 |
| Kaliber Systems Limited | Information & communication | 1990 |
| Kalki Pharma Limited | Wholesale & retail | 2026 |
| Kalra Textile Zone Ltd | Wholesale & retail | 2025 |
| Kalyan Global Limited | Administrative & support | 2021 |
| KAM Sky Limited | Information & communication | 2024 |
| Kama Global Ltd | Wholesale & retail | 2026 |
| Kamal Investment Ltd | Real estate | 2019 |
| Kamali by KS Ltd | Wholesale & retail | 2025 |
| Kamboz Construction Limited | Construction | 2025 |
| Kamil Building Service Ltd | Construction | 2017 |
| Kamino Consulting Ltd | Administrative & support | 2022 |
| Kamko Developments Ltd | Real estate | 2020 |
| Kamko London Limited | Real estate | 2021 |
| Kamson Consulting Ltd | Professional & scientific | 2018 |
| Kamsy Jollof and Grill Limited | Hospitality | 2026 |
| KAN Foods Limited | Wholesale & retail | 2014 |
| Kanan&Co Ltd | Hospitality | 2025 |
| Kanarya & Kadikoy Ltd | Hospitality | 2023 |
| Kandaria Healthcare Ltd. | Health & social care | 2014 |
| Kane-Gill Properties Ltd | Real estate | 2023 |
| Kaneja Development Ltd | Real estate | 2023 |
| Kaneshi Market Ltd | Wholesale & retail | 2024 |
| Kanki Turkish Meze & Cocktail Bar Limited | Hospitality | 2025 |
| Kano Properties Limited | Real estate | 2024 |
| Kano Rian Limited | Households | 2023 |
| Kantaria Capital Ltd | Professional & scientific | 2023 |
| Kanwal Constructions Limited | Construction | 2023 |
| Kanyin Ltd | Wholesale & retail | 2025 |
| Kanzora Ltd | Wholesale & retail | 2025 |
| Kapra Mandi Luton Limited | Wholesale & retail | 2024 |
| Kapsoul Limited | Real estate | 2002 |
| KAR4U Ltd | Wholesale & retail | 2024 |
| Karam Medics Ltd | Health & social care | 2022 |
| Karamjit Construction Ltd | Construction | 2020 |
| Karams (EA) Ltd | Hospitality | 2025 |