| Keassh Ltd | Real estate | 2025 |
| Kebabwala Ltd | Other services | 2019 |
| KEC Properties Ltd | Real estate | 2021 |
| Kechis Limited | Health & social care | 2017 |
| Keeman PVT Ltd Ltd | Health & social care | 2018 |
| Keen's Acre Holdings Ltd | Real estate | 2024 |
| Keep Growing Ltd | Professional & scientific | 2019 |
| Keeps Medical Ltd | Health & social care | 2025 |
| Kehnda Khunda Billy Painter Limited | Administrative & support | 2023 |
| Keiv Ltd | Information & communication | 2022 |
| Kelly Business Solutions Ltd | Professional & scientific | 2018 |
| Kelz in the CUT Ltd | Other services | 2022 |
| Kenilworth House Residents Association Limited | Households | 1994 |
| Kennedy Education Limited | Education | 2025 |
| Kennedy's Credit Collections Limited | Professional & scientific | 2005 |
| Kennet Motors Limited | Wholesale & retail | 2023 |
| Kensington Fire and Security Ltd | Administrative & support | 2020 |
| Kensley Homes Limited | Real estate | 2025 |
| Kent Gateway Ltd | Wholesale & retail | 2019 |
| Kent RO Systems Ltd. | Water & waste | 2016 |
| Kentons Business Services Ltd | Professional & scientific | 2024 |
| Kenward Consulting Limited | Professional & scientific | 2009 |
| Kenya Butchers Limited | Wholesale & retail | 2009 |
| Kenya Stores Limited | Wholesale & retail | 2009 |
| Keptra Technologies Limited | Information & communication | 2024 |
| Kernel Technologies Ltd | Information & communication | 2013 |
| Kesr Investments Limited | Real estate | 2025 |
| Kesri Developments Limited | Construction | 2024 |
| Keur Khadime Group Ltd | Administrative & support | 2023 |
| Kevanta Ltd | Real estate | 2026 |
| Kevin & STD Shopping Ltd | Wholesale & retail | 2022 |
| Kevwear Limited | Wholesale & retail | 2026 |
| KEW Technology Limited | Professional & scientific | 2016 |
| Key Innovation Software Solution Ltd | Wholesale & retail | 2023 |
| Key Mail (UK) Limited | Professional & scientific | 1999 |
| Key Property Advisory Limited | Real estate | 2026 |
| Key Works Limited | Education | 2020 |
| KEY2B Limited | Professional & scientific | 2006 |
| Keyinsite Consultancy Limited | Information & communication | 2023 |
| Keynes Partners Ltd | Real estate | 2024 |
| Keypoint Property Limited | Construction | 2017 |
| Keyqp Quality Services Limited | Professional & scientific | 2018 |
| Keyquality Consulting Limited | Professional & scientific | 2021 |
| Keystone 20 Ltd | Construction | 2026 |
| KGM Infra Slough Limited | Construction | 2024 |
| KH Carz Ltd | Wholesale & retail | 2019 |
| KH Mechanical Services Limited | Construction | 2013 |
| KH Reliable Services Ltd | Professional & scientific | 2016 |
| Khaao Ltd | Hospitality | 2024 |
| Khaimah Travels Ltd | Administrative & support | 2024 |
| Khaira Superstore Limited | Wholesale & retail | 2015 |
| Khalsa Building Construction Ltd | Construction | 2017 |
| Khalsa United Limited | Manufacturing | 2024 |
| Khamkha Photoartist Limited | Professional & scientific | 2023 |
| Khan & Khan Ltd | Construction | 2015 |
| Khan Aviation Consultancy Ltd | Professional & scientific | 2022 |
| Khan Baba Auto Repairs Ltd | Wholesale & retail | 2023 |
| Khan Capital Investments Ltd | Real estate | 2024 |
| Khan Halal Limited | Hospitality | 2020 |
| Khan Homes Group Ltd | Real estate | 2025 |
| Khan Mobiles Shop Limited | Wholesale & retail | 2025 |
| Khan Portfolio Ltd | Real estate | 2024 |
| Khan Removal Services Ltd | Transport & logistics | 2023 |
| Khan School of Motoring Ltd | Education | 2025 |
| Khan's Property Investments Ltd | Financial services | 2021 |
| Khaneja Superstore Ltd | Wholesale & retail | 2019 |
| Khangura Management Co Ltd | Real estate | 2022 |
| Khansa and Aleena Ltd | Real estate | 2023 |
| Khansa Malik Ltd | Health & social care | 2012 |
| Khanspcocarhire Ltd | Administrative & support | 2024 |
| Khanu Traders Limited | Wholesale & retail | 2020 |
| Khara Transport Ltd | Transport & logistics | 2018 |
| Kharia Express Ltd | Hospitality | 2016 |
| Kharia Fast Food Ltd | Hospitality | 2009 |
| Kharis K Bullies Limited | Other services | 2021 |
| Kharis Solutions Limited | Health & social care | 2013 |
| Kharma Asylum Ltd | Information & communication | 2026 |
| Kharoud Brothers Limited | Transport & logistics | 2026 |
| Khatkar Pharma Limited | Wholesale & retail | 2022 |
| Khayam Properties Ltd | Real estate | 2025 |
| Khayber Travel Ltd | Other services | 2015 |
| Kheerana Europe Limited | Wholesale & retail | 2024 |
| Khehra Ltd | Real estate | 2020 |
| Khehra Transport Services Limited | Transport & logistics | 2024 |
| Khela Haulage Ltd | Real estate | 2023 |
| Khella Logistics Ltd | Transport & logistics | 2026 |
| Kheri Transports Ltd | Transport & logistics | 2022 |
| Khiva Kitchen and Bedroom Ltd | Construction | 2024 |
| Khizarr Ltd. | Wholesale & retail | 2025 |
| Khizroon Estates Limited | Real estate | 2024 |
| KHM Gourmet Limited | Wholesale & retail | 2021 |
| Khocha Construction Ltd | Construction | 2026 |
| Khokhar Motors Ltd | Wholesale & retail | 2019 |
| Kholia Enterprises Ltd | Information & communication | 2020 |
| Khondo Limited | Information & communication | 2022 |
| Khoslaa Limited | Information & communication | 2024 |
| Khouch Ltd | Information & communication | 2022 |
| Khrystal Clear Minds Psychotherapy Ltd | Health & social care | 2025 |
| Khstyles Limited | Real estate | 2019 |
| Khuglobletrading Ltd | Wholesale & retail | 2026 |